[Cmake-commits] CMake branch, master, updated. v3.10.0-rc1-57-g48a58e9

Kitware Robot kwrobot at kitware.com
Wed Oct 11 08:15:15 EDT 2017


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The branch, master has been updated
       via  48a58e91a6c50539260fb9744b98fb8857a8803c (commit)
       via  6ada7f2e9baab9a75084d162a8ea2114487b3291 (commit)
       via  bb7591487d95ff9b638c7c1702a8dca2a9e39b45 (commit)
       via  9e3ef40edb6eae36e822c129bec5d4ee9de0dd57 (commit)
       via  de7c21d677db1ddaeece03c19e13e448f4031511 (commit)
       via  2fad0e20b6b2b4c3cfc177267cf9689658f50c23 (commit)
       via  0be7d61abf970186b3a83cc6a2aebd3b208b0618 (commit)
       via  3f567a98470ffa812783a749f052ee1e6ae1d202 (commit)
      from  6e1fd9269c6b65340dce9aff53b6d15ffca2baba (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
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- Log -----------------------------------------------------------------
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=48a58e91a6c50539260fb9744b98fb8857a8803c
commit 48a58e91a6c50539260fb9744b98fb8857a8803c
Merge: 6ada7f2 bb75914
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Oct 11 12:13:44 2017 +0000
Commit:     Kitware Robot <kwrobot at kitware.com>
CommitDate: Wed Oct 11 08:14:44 2017 -0400

    Merge topic 'update-curl'
    
    bb759148 curl: Update build within CMake to account for 7.56 changes
    9e3ef40e Merge branch 'upstream-curl' into update-curl
    de7c21d6 curl 2017-10-04 (3ea76790)
    2fad0e20 curl: Update script to get curl 7.56.0
    
    Acked-by: Kitware Robot <kwrobot at kitware.com>
    Merge-request: !1372


https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=6ada7f2e9baab9a75084d162a8ea2114487b3291
commit 6ada7f2e9baab9a75084d162a8ea2114487b3291
Merge: 6e1fd92 0be7d61
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Oct 11 12:12:41 2017 +0000
Commit:     Kitware Robot <kwrobot at kitware.com>
CommitDate: Wed Oct 11 08:12:58 2017 -0400

    Merge topic 'test-tolerate-clang-sanitizers'
    
    0be7d61a Tests: Teach RunCMake to ignore clang unused sanitizer flag warnings
    3f567a98 Tests: Refactor RunCMake output line ignore regex construction
    
    Acked-by: Kitware Robot <kwrobot at kitware.com>
    Merge-request: !1371


https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=bb7591487d95ff9b638c7c1702a8dca2a9e39b45
commit bb7591487d95ff9b638c7c1702a8dca2a9e39b45
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Oct 4 07:40:04 2017 -0400
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 11:15:20 2017 -0400

    curl: Update build within CMake to account for 7.56 changes

diff --git a/Utilities/cmcurl/CMakeLists.txt b/Utilities/cmcurl/CMakeLists.txt
index 93dff33..a831f7f 100644
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
@@ -24,6 +24,7 @@ set(CURL_DISABLE_TFTP ON CACHE INTERNAL "Disable curl tftp protocol?")
 set(CURL_DISABLE_VERBOSE_STRINGS OFF CACHE INTERNAL "Do not disable curl verbosity")
 set(CURL_HIDDEN_SYMBOLS OFF CACHE INTERNAL "No curl hidden symbols")
 set(CURL_STATICLIB ON CACHE INTERNAL "Static curl")
+set(CURL_WERROR OFF CACHE INTERNAL "Turn compiler warnings into errors")
 set(DISABLED_THREADSAFE OFF CACHE INTERNAL "Curl can use thread-safe functions")
 set(ENABLE_ARES OFF CACHE INTERNAL "No curl c-ares support")
 set(ENABLE_CURLDEBUG OFF CACHE INTERNAL "No curl TrackMemory features")
@@ -33,6 +34,7 @@ set(ENABLE_MANUAL OFF CACHE INTERNAL "No curl built-in manual")
 set(ENABLE_THREADED_RESOLVER OFF CACHE INTERNAL "No curl POSIX threaded DNS lookup")
 set(ENABLE_UNIX_SOCKETS OFF CACHE INTERNAL "No curl Unix domain sockets support")
 set(HTTP_ONLY OFF CACHE INTERNAL "Curl is not http-only")
+set(PICKY_COMPILER OFF CACHE INTERNAL "Enable picky compiler options")
 set(USE_WIN32_LDAP OFF CACHE INTERNAL "No curl Windows LDAP")
 if(CMAKE_USE_OPENSSL)
 elseif(WIN32)
@@ -204,8 +206,10 @@ if (ENABLE_CURLDEBUG)
   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
 endif()
 
+if(0) # This code not needed for building within CMake.
 # For debug libs and exes, add "-d" postfix
 set(CMAKE_DEBUG_POSTFIX "-d" CACHE STRING "Set debug library postfix")
+endif()
 
 # initialize CURL_LIBS
 set(CURL_LIBS "")
diff --git a/Utilities/cmcurl/lib/curl_config.h.cmake b/Utilities/cmcurl/lib/curl_config.h.cmake
index 274dd45..abe9ffe 100644
--- a/Utilities/cmcurl/lib/curl_config.h.cmake
+++ b/Utilities/cmcurl/lib/curl_config.h.cmake
@@ -880,7 +880,7 @@
 @SIZEOF_OFF_T_CODE@
 
 /* The size of `curl_off_t', as computed by sizeof. */
-#cmakedefine SIZEOF_CURL_OFF_T ${SIZEOF_CURL_OFF_T}
+ at SIZEOF_CURL_OFF_T_CODE@
 
 /* The size of `size_t', as computed by sizeof. */
 @SIZEOF_SIZE_T_CODE@

https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=9e3ef40edb6eae36e822c129bec5d4ee9de0dd57
commit 9e3ef40edb6eae36e822c129bec5d4ee9de0dd57
Merge: 2fad0e2 de7c21d
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Oct 4 07:28:34 2017 -0400
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 11:15:16 2017 -0400

    Merge branch 'upstream-curl' into update-curl
    
    * upstream-curl:
      curl 2017-10-04 (3ea76790)

diff --cc Utilities/cmcurl/CMake/cmake_uninstall.cmake.in
index 0000000,d00a516..d00a516
mode 000000,100644..100644
--- a/Utilities/cmcurl/CMake/cmake_uninstall.cmake.in
+++ b/Utilities/cmcurl/CMake/cmake_uninstall.cmake.in
diff --cc Utilities/cmcurl/CMakeLists.txt
index d85f366,0000000..93dff33
mode 100644,000000..100644
--- a/Utilities/cmcurl/CMakeLists.txt
+++ b/Utilities/cmcurl/CMakeLists.txt
@@@ -1,1413 -1,0 +1,1434 @@@
 +# Set curl options as needed for CMake build
 +set(BUILD_CURL_EXE OFF CACHE INTERNAL "No curl exe")
 +set(BUILD_DASHBOARD_REPORTS OFF CACHE INTERNAL "No curl dashboard reports")
 +set(BUILD_RELEASE_DEBUG_DIRS OFF CACHE INTERNAL "No curl release/debug dirs")
 +set(CMAKE_USE_GSSAPI OFF CACHE INTERNAL "Disable curl gssapi")
 +set(CMAKE_USE_LIBSSH2 OFF CACHE INTERNAL "Disable curl libssh2")
 +set(CMAKE_USE_OPENLDAP OFF CACHE INTERNAL "No curl OpenLDAP")
 +set(CURL_DISABLE_COOKIES OFF CACHE INTERNAL "Do not disable curl cookie support")
 +set(CURL_DISABLE_CRYPTO_AUTH OFF CACHE INTERNAL "Do not disable curl crypto auth")
 +set(CURL_DISABLE_DICT ON CACHE INTERNAL "Disable curl dict protocol?")
 +set(CURL_DISABLE_FILE OFF CACHE INTERNAL "Disable curl file protocol?")
 +set(CURL_DISABLE_FTP OFF CACHE INTERNAL "Disable curl ftp protocol?")
 +set(CURL_DISABLE_GOPHER ON CACHE INTERNAL "Disable curl gopher protocol?")
 +set(CURL_DISABLE_HTTP OFF CACHE INTERNAL "Disable curl http protocol?")
 +set(CURL_DISABLE_IMAP ON CACHE INTERNAL "Disable curl imap protocol?")
 +set(CURL_DISABLE_LDAP ON CACHE INTERNAL "Disable curl ldap protocol?")
 +set(CURL_DISABLE_LDAPS ON CACHE INTERNAL "Disable curl ldaps protocol?")
 +set(CURL_DISABLE_POP3 ON CACHE INTERNAL "Disable curl pop3 protocol?")
 +set(CURL_DISABLE_PROXY OFF CACHE INTERNAL "Do not disable curl proxy")
 +set(CURL_DISABLE_RTSP ON CACHE INTERNAL "Disable curl rtsp protocol?")
 +set(CURL_DISABLE_SMTP ON CACHE INTERNAL "Disable curl smtp protocol?")
 +set(CURL_DISABLE_TELNET ON CACHE INTERNAL "Disable curl telnet protocol?")
 +set(CURL_DISABLE_TFTP ON CACHE INTERNAL "Disable curl tftp protocol?")
 +set(CURL_DISABLE_VERBOSE_STRINGS OFF CACHE INTERNAL "Do not disable curl verbosity")
 +set(CURL_HIDDEN_SYMBOLS OFF CACHE INTERNAL "No curl hidden symbols")
 +set(CURL_STATICLIB ON CACHE INTERNAL "Static curl")
 +set(DISABLED_THREADSAFE OFF CACHE INTERNAL "Curl can use thread-safe functions")
 +set(ENABLE_ARES OFF CACHE INTERNAL "No curl c-ares support")
 +set(ENABLE_CURLDEBUG OFF CACHE INTERNAL "No curl TrackMemory features")
 +set(ENABLE_DEBUG OFF CACHE INTERNAL "No curl debug features")
 +set(ENABLE_IPV6 OFF CACHE INTERNAL "No curl IPv6 support")
 +set(ENABLE_MANUAL OFF CACHE INTERNAL "No curl built-in manual")
 +set(ENABLE_THREADED_RESOLVER OFF CACHE INTERNAL "No curl POSIX threaded DNS lookup")
 +set(ENABLE_UNIX_SOCKETS OFF CACHE INTERNAL "No curl Unix domain sockets support")
 +set(HTTP_ONLY OFF CACHE INTERNAL "Curl is not http-only")
 +set(USE_WIN32_LDAP OFF CACHE INTERNAL "No curl Windows LDAP")
 +if(CMAKE_USE_OPENSSL)
 +elseif(WIN32)
 +  set(CMAKE_USE_WINSSL ON CACHE INTERNAL "enable Windows native SSL/TLS")
 +  set(CURL_WINDOWS_SSPI ON CACHE INTERNAL "Use windows libraries to allow NTLM authentication without openssl")
 +elseif(APPLE)
 +  # Use OS X SSL/TLS native implementation if available on target version.
 +  if(CMAKE_OSX_DEPLOYMENT_TARGET)
 +    set(OSX_VERSION ${CMAKE_OSX_DEPLOYMENT_TARGET})
 +  else()
 +    execute_process(
 +      COMMAND sw_vers -productVersion
 +      OUTPUT_VARIABLE OSX_VERSION
 +      OUTPUT_STRIP_TRAILING_WHITESPACE
 +      )
 +  endif()
 +  if(NOT OSX_VERSION VERSION_LESS 10.6 AND
 +      CMAKE_C_COMPILER_ID MATCHES "GNU|Clang|AppleClang")
 +    set(CMAKE_USE_DARWINSSL ON CACHE INTERNAL "enable Apple OS native SSL/TLS")
 +  else()
 +    set(CMAKE_USE_DARWINSSL OFF CACHE INTERNAL "enable Apple OS native SSL/TLS")
 +  endif()
 +endif()
 +set(CMAKE_USE_MBEDTLS OFF CACHE INTERNAL "Enable mbedTLS for SSL/TLS")
 +
 +# Windows Vista and above have inet_pton, but this will link on
 +# older versions and then the executable will fail to launch at
 +# runtime on older versions because no DLL provides the symbol.
 +if(WIN32)
 +  set(HAVE_INET_PTON 0 CACHE INTERNAL "Do not use inet_pton")
 +endif()
 +
 +# Starting with OSX 10.11 there is an unrelated libnetwork library which will
 +# be picked up during curl configuration. Linking against this library is
 +# unnecessary and breaks backward compatibility of the resulting binaries
 +# because libnetwork is unavailable on older OSX versions.
 +if(APPLE)
 +  set(HAVE_LIBNETWORK 0 CACHE INTERNAL "Do not use libnetwork")
 +endif(APPLE)
 +
 +# Disable warnings to avoid changing 3rd party code.
 +if(CMAKE_C_COMPILER_ID MATCHES
 +    "^(GNU|Clang|AppleClang|XL|VisualAge|SunPro|MIPSpro|HP|Intel)$")
 +  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w")
 +elseif(CMAKE_C_COMPILER_ID STREQUAL "PathScale")
 +  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -woffall")
 +endif()
 +
 +#***************************************************************************
 +#                                  _   _ ____  _
 +#  Project                     ___| | | |  _ \| |
 +#                             / __| | | | |_) | |
 +#                            | (__| |_| |  _ <| |___
 +#                             \___|\___/|_| \_\_____|
 +#
- # Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
++# Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 +#
 +# This software is licensed as described in the file COPYING, which
 +# you should have received as part of this distribution. The terms
 +# are also available at https://curl.haxx.se/docs/copyright.html.
 +#
 +# You may opt to use, copy, modify, merge, publish, distribute and/or sell
 +# copies of the Software, and permit persons to whom the Software is
 +# furnished to do so, under the terms of the COPYING file.
 +#
 +# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 +# KIND, either express or implied.
 +#
 +###########################################################################
 +# curl/libcurl CMake script
 +# by Tetetest and Sukender (Benoit Neil)
 +
 +# TODO:
 +# The output .so file lacks the soname number which we currently have within the lib/Makefile.am file
 +# Add full (4 or 5 libs) SSL support
 +# Add INSTALL target (EXTRA_DIST variables in Makefile.am may be moved to Makefile.inc so that CMake/CPack is aware of what's to include).
 +# Add CTests(?)
 +# Check on all possible platforms
 +# Test with as many configurations possible (With or without any option)
 +# Create scripts that help keeping the CMake build system up to date (to reduce maintenance). According to Tetetest:
 +#  - lists of headers that 'configure' checks for;
 +#  - curl-specific tests (the ones that are in m4/curl-*.m4 files);
 +#  - (most obvious thing:) curl version numbers.
 +# Add documentation subproject
 +#
 +# To check:
 +# (From Daniel Stenberg) The cmake build selected to run gcc with -fPIC on my box while the plain configure script did not.
 +# (From Daniel Stenberg) The gcc command line use neither -g nor any -O options. As a developer, I also treasure our configure scripts's --enable-debug option that sets a long range of "picky" compiler options.
 +cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
 +set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
 +include(Utilities)
 +include(Macros)
 +include(CMakeDependentOption)
++include(CheckCCompilerFlag)
 +
 +project( CURL C )
 +
 +if(0) # This code not needed for building within CMake.
 +message(WARNING "the curl cmake build system is poorly maintained. Be aware")
 +endif()
 +
 +file (READ ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS)
 +string (REGEX MATCH "#define LIBCURL_VERSION \"[^\"]*"
 +  CURL_VERSION ${CURL_VERSION_H_CONTENTS})
 +string (REGEX REPLACE "[^\"]+\"" "" CURL_VERSION ${CURL_VERSION})
 +string (REGEX MATCH "#define LIBCURL_VERSION_NUM 0x[0-9a-fA-F]+"
 +  CURL_VERSION_NUM ${CURL_VERSION_H_CONTENTS})
 +string (REGEX REPLACE "[^0]+0x" "" CURL_VERSION_NUM ${CURL_VERSION_NUM})
 +
 +include_regular_expression("^.*$")    # Sukender: Is it necessary?
 +
 +# Setup package meta-data
 +# SET(PACKAGE "curl")
 +if(0) # This code not needed for building within CMake.
 +message(STATUS "curl version=[${CURL_VERSION}]")
 +endif()
 +# SET(PACKAGE_TARNAME "curl")
 +# SET(PACKAGE_NAME "curl")
 +# SET(PACKAGE_VERSION "-")
 +# SET(PACKAGE_STRING "curl-")
 +# SET(PACKAGE_BUGREPORT "a suitable curl mailing list => https://curl.haxx.se/mail/")
 +set(OPERATING_SYSTEM "${CMAKE_SYSTEM_NAME}")
 +set(OS "\"${CMAKE_SYSTEM_NAME}\"")
 +
 +include_directories(${PROJECT_BINARY_DIR}/include/curl)
 +include_directories( ${CURL_SOURCE_DIR}/include )
 +
++option(CURL_WERROR "Turn compiler warnings into errors" OFF)
++option(PICKY_COMPILER "Enable picky compiler options" ON)
 +option(BUILD_CURL_EXE "Set to ON to build curl executable." ON)
 +option(CURL_STATICLIB "Set to ON to build libcurl with static linking." OFF)
 +option(ENABLE_ARES "Set to ON to enable c-ares support" OFF)
 +if(WIN32)
-   CMAKE_DEPENDENT_OPTION(ENABLE_THREADED_RESOLVER
-                          "Set to ON to enable threaded DNS lookup"
-                          ON "NOT ENABLE_ARES"
-                          OFF)
- else()
-   option(ENABLE_THREADED_RESOLVER "Set to ON to enable POSIX threaded DNS lookup" OFF)
++  option(CURL_STATIC_CRT "Set to ON to build libcurl with static CRT on Windows (/MT)." OFF)
++  option(ENABLE_INET_PTON "Set to OFF to prevent usage of inet_pton when building against modern SDKs while still requiring compatibility with older Windows versions, such as Windows XP, Windows Server 2003 etc." ON)
 +endif()
++
++CMAKE_DEPENDENT_OPTION(ENABLE_THREADED_RESOLVER "Set to ON to enable threaded DNS lookup"
++        ON "NOT ENABLE_ARES"
++        OFF)
++
 +option(ENABLE_DEBUG "Set to ON to enable curl debug features" OFF)
 +option(ENABLE_CURLDEBUG "Set to ON to build with TrackMemory feature enabled" OFF)
 +
++if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
++  if (PICKY_COMPILER)
++    foreach (_CCOPT -pedantic -Wall -W -Wpointer-arith -Wwrite-strings -Wunused -Wshadow -Winline -Wnested-externs -Wmissing-declarations -Wmissing-prototypes -Wno-long-long -Wfloat-equal -Wno-multichar -Wsign-compare -Wundef -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wclobbered -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -Wdouble-promotion -Wno-system-headers)
++      # surprisingly, CHECK_C_COMPILER_FLAG needs a new variable to store each new
++      # test result in.
++      CHECK_C_COMPILER_FLAG(${_CCOPT} OPT${_CCOPT})
++      if(OPT${_CCOPT})
++        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_CCOPT}")
++      endif()
++    endforeach()
++  endif(PICKY_COMPILER)
++endif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
++
 +if (ENABLE_DEBUG)
 +  # DEBUGBUILD will be defined only for Debug builds
 +  if(NOT CMAKE_VERSION VERSION_LESS 3.0)
 +    set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:DEBUGBUILD>)
 +  else()
 +    set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS_DEBUG DEBUGBUILD)
 +  endif()
 +  set(ENABLE_CURLDEBUG ON)
 +endif()
 +
 +if (ENABLE_CURLDEBUG)
 +  set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
 +endif()
 +
++# For debug libs and exes, add "-d" postfix
++set(CMAKE_DEBUG_POSTFIX "-d" CACHE STRING "Set debug library postfix")
++
 +# initialize CURL_LIBS
 +set(CURL_LIBS "")
 +
- if(ENABLE_THREADED_RESOLVER AND ENABLE_ARES)
-   message(FATAL_ERROR "Options ENABLE_THREADED_RESOLVER and ENABLE_ARES are mutually exclusive")
- endif()
- 
 +if(ENABLE_ARES)
 +  set(USE_ARES 1)
 +  find_package(CARES REQUIRED)
 +  list(APPEND CURL_LIBS ${CARES_LIBRARY} )
 +  set(CURL_LIBS ${CURL_LIBS} ${CARES_LIBRARY})
 +endif()
 +
- if(MSVC)
-   option(BUILD_RELEASE_DEBUG_DIRS "Set OFF to build each configuration to a separate directory" OFF)
-   mark_as_advanced(BUILD_RELEASE_DEBUG_DIRS)
- endif()
- 
 +if(0) # This code not needed for building within CMake.
 +include(CurlSymbolHiding)
 +endif()
 +
 +option(HTTP_ONLY "disables all protocols except HTTP (This overrides all CURL_DISABLE_* options)" OFF)
 +mark_as_advanced(HTTP_ONLY)
 +option(CURL_DISABLE_FTP "disables FTP" OFF)
 +mark_as_advanced(CURL_DISABLE_FTP)
 +option(CURL_DISABLE_LDAP "disables LDAP" OFF)
 +mark_as_advanced(CURL_DISABLE_LDAP)
 +option(CURL_DISABLE_TELNET "disables Telnet" OFF)
 +mark_as_advanced(CURL_DISABLE_TELNET)
 +option(CURL_DISABLE_DICT "disables DICT" OFF)
 +mark_as_advanced(CURL_DISABLE_DICT)
 +option(CURL_DISABLE_FILE "disables FILE" OFF)
 +mark_as_advanced(CURL_DISABLE_FILE)
 +option(CURL_DISABLE_TFTP "disables TFTP" OFF)
 +mark_as_advanced(CURL_DISABLE_TFTP)
 +option(CURL_DISABLE_HTTP "disables HTTP" OFF)
 +mark_as_advanced(CURL_DISABLE_HTTP)
 +
 +option(CURL_DISABLE_LDAPS "to disable LDAPS" OFF)
 +mark_as_advanced(CURL_DISABLE_LDAPS)
 +
 +option(CURL_DISABLE_RTSP "to disable RTSP" OFF)
 +mark_as_advanced(CURL_DISABLE_RTSP)
 +option(CURL_DISABLE_PROXY "to disable proxy" OFF)
 +mark_as_advanced(CURL_DISABLE_PROXY)
 +option(CURL_DISABLE_POP3 "to disable POP3" OFF)
 +mark_as_advanced(CURL_DISABLE_POP3)
 +option(CURL_DISABLE_IMAP "to disable IMAP" OFF)
 +mark_as_advanced(CURL_DISABLE_IMAP)
 +option(CURL_DISABLE_SMTP "to disable SMTP" OFF)
 +mark_as_advanced(CURL_DISABLE_SMTP)
 +option(CURL_DISABLE_GOPHER "to disable Gopher" OFF)
 +mark_as_advanced(CURL_DISABLE_GOPHER)
 +
 +if(HTTP_ONLY)
 +  set(CURL_DISABLE_FTP ON)
 +  set(CURL_DISABLE_LDAP ON)
 +  set(CURL_DISABLE_LDAPS ON)
 +  set(CURL_DISABLE_TELNET ON)
 +  set(CURL_DISABLE_DICT ON)
 +  set(CURL_DISABLE_FILE ON)
 +  set(CURL_DISABLE_TFTP ON)
 +  set(CURL_DISABLE_RTSP ON)
 +  set(CURL_DISABLE_POP3 ON)
 +  set(CURL_DISABLE_IMAP ON)
 +  set(CURL_DISABLE_SMTP ON)
 +  set(CURL_DISABLE_GOPHER ON)
 +endif()
 +
 +option(CURL_DISABLE_COOKIES "to disable cookies support" OFF)
 +mark_as_advanced(CURL_DISABLE_COOKIES)
 +
 +option(CURL_DISABLE_CRYPTO_AUTH "to disable cryptographic authentication" OFF)
 +mark_as_advanced(CURL_DISABLE_CRYPTO_AUTH)
 +option(CURL_DISABLE_VERBOSE_STRINGS "to disable verbose strings" OFF)
 +mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
- option(DISABLED_THREADSAFE "Set to explicitly specify we don't want to use thread-safe functions" OFF)
- mark_as_advanced(DISABLED_THREADSAFE)
 +option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
 +mark_as_advanced(ENABLE_IPV6)
 +if(ENABLE_IPV6 AND NOT WIN32)
 +  include(CheckStructHasMember)
 +  check_struct_has_member("struct sockaddr_in6" sin6_addr "netinet/in.h"
 +                          HAVE_SOCKADDR_IN6_SIN6_ADDR)
 +  check_struct_has_member("struct sockaddr_in6" sin6_scope_id "netinet/in.h"
 +                          HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
 +  if(NOT HAVE_SOCKADDR_IN6_SIN6_ADDR)
 +    message(WARNING "struct sockaddr_in6 not available, disabling IPv6 support")
 +    # Force the feature off as this name is used as guard macro...
 +    set(ENABLE_IPV6 OFF
 +        CACHE BOOL "Define if you want to enable IPv6 support" FORCE)
 +  endif()
 +endif()
 +
- option(ENABLE_MANUAL "to provide the built-in manual" ON)
- unset(USE_MANUAL CACHE) # TODO: cache NROFF/NROFF_MANOPT/USE_MANUAL vars?
- if(ENABLE_MANUAL)
-   find_program(NROFF NAMES gnroff nroff)
-   if(NROFF)
-     # Need a way to write to stdin, this will do
-     file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
-     # Tests for a valid nroff option to generate a manpage
-     foreach(_MANOPT "-man" "-mandoc")
-       execute_process(COMMAND "${NROFF}" ${_MANOPT}
-         OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
-         INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
-         ERROR_QUIET)
-       # Save the option if it was valid
-       if(NROFF_MANOPT_OUTPUT)
-         message("Found *nroff option: -- ${_MANOPT}")
-         set(NROFF_MANOPT ${_MANOPT})
-         set(USE_MANUAL 1)
-         break()
-       endif()
-     endforeach()
-     # No need for the temporary file
-     file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
-     if(NOT USE_MANUAL)
-       message(WARNING "Found no *nroff option to get plaintext from man pages")
-     endif()
-   else()
-     message(WARNING "Found no *nroff program")
-   endif()
- endif()
- 
 +if(0) # This code not needed for building within CMake.
++CURL_NROFF_CHECK()
 +# Required for building manual, docs, tests
- find_package(Perl REQUIRED)
++find_package(Perl)
++
++CMAKE_DEPENDENT_OPTION(ENABLE_MANUAL "to provide the built-in manual"
++    ON "NROFF_USEFUL;PERL_FOUND"
++    OFF)
++
++if(NOT PERL_FOUND)
++  message(STATUS "Perl not found, testing disabled.")
++  set(BUILD_TESTING OFF)
++endif()
++if(ENABLE_MANUAL)
++  set(USE_MANUAL ON)
++endif()
 +endif()
 +
 +# We need ansi c-flags, especially on HP
 +set(CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS}")
 +set(CMAKE_REQUIRED_FLAGS ${CMAKE_ANSI_CFLAGS})
 +
++if(CURL_STATIC_CRT)
++  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
++  set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
++endif()
++
 +# Disable warnings on Borland to avoid changing 3rd party code.
 +if(BORLAND)
 +  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w-")
 +endif(BORLAND)
 +
++if(CURL_WERROR)
++  if(MSVC_VERSION)
++    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /WX")
++    set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /WX")
++  else()
++    # this assumes clang or gcc style options
++    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
++  endif()
++endif(CURL_WERROR)
++
 +# If we are on AIX, do the _ALL_SOURCE magic
 +if(${CMAKE_SYSTEM_NAME} MATCHES AIX)
 +  set(_ALL_SOURCE 1)
 +endif(${CMAKE_SYSTEM_NAME} MATCHES AIX)
 +
 +# Include all the necessary files for macros
 +include (CheckFunctionExists)
 +include (CheckIncludeFile)
 +include (CheckIncludeFiles)
 +include (CheckLibraryExists)
 +include (CheckSymbolExists)
 +include (CheckTypeSize)
 +include (CheckCSourceCompiles)
 +
 +# On windows preload settings
 +if(WIN32)
 +  set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D_WINSOCKAPI_=")
 +  include(${CMAKE_CURRENT_SOURCE_DIR}/CMake/Platforms/WindowsCache.cmake)
 +endif(WIN32)
 +
 +if(ENABLE_THREADED_RESOLVER)
++  find_package(Threads REQUIRED)
 +  if(WIN32)
 +    set(USE_THREADS_WIN32 ON)
 +  else()
-     check_include_file_concat("pthread.h" HAVE_PTHREAD_H)
-     if(HAVE_PTHREAD_H)
-       set(CMAKE_THREAD_PREFER_PTHREAD 1)
-       find_package(Threads)
-       if(CMAKE_USE_PTHREADS_INIT)
-         set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
-         set(USE_THREADS_POSIX 1)
-       endif()
-     endif()
++    set(USE_THREADS_POSIX ${CMAKE_USE_PTHREADS_INIT})
++    set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
 +  endif()
++  set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
 +endif()
 +
 +# Check for all needed libraries
 +if(0) # This code not needed for building within CMake.
 +check_library_exists_concat("dl"     dlopen       HAVE_LIBDL)
 +else()
 +  # Use the cmake-defined dl libs as dl is should not be used
 +  # on HPUX, but rather dld this avoids a warning
 +  list(APPEND CURL_LIBS ${CMAKE_DL_LIBS})
 +endif()
 +check_library_exists_concat("socket" connect      HAVE_LIBSOCKET)
 +check_library_exists("c" gethostbyname "" NOT_NEED_LIBNSL)
 +
 +# Yellowtab Zeta needs different libraries than BeOS 5.
 +if(BEOS)
 +  set(NOT_NEED_LIBNSL 1)
 +  check_library_exists_concat("bind" gethostbyname HAVE_LIBBIND)
 +  check_library_exists_concat("bnetapi" closesocket HAVE_LIBBNETAPI)
 +endif(BEOS)
 +
 +check_library_exists_concat("network" recv HAVE_LIBNETWORK)
 +
 +if(NOT NOT_NEED_LIBNSL)
 +  check_library_exists_concat("nsl"    gethostbyname  HAVE_LIBNSL)
 +endif(NOT NOT_NEED_LIBNSL)
 +
 +check_function_exists(gethostname HAVE_GETHOSTNAME)
 +
 +if(WIN32)
 +  check_library_exists_concat("ws2_32" getch        HAVE_LIBWS2_32)
 +  check_library_exists_concat("winmm"  getch        HAVE_LIBWINMM)
 +endif()
 +
 +# check SSL libraries
 +# TODO support GNUTLS, NSS, POLARSSL, AXTLS, CYASSL
 +
 +if(APPLE)
 +  option(CMAKE_USE_DARWINSSL "enable Apple OS native SSL/TLS" OFF)
 +endif()
 +if(WIN32)
 +  option(CMAKE_USE_WINSSL "enable Windows native SSL/TLS" OFF)
 +  cmake_dependent_option(CURL_WINDOWS_SSPI "Use windows libraries to allow NTLM authentication without openssl" ON
 +    CMAKE_USE_WINSSL OFF)
 +endif()
 +option(CMAKE_USE_MBEDTLS "Enable mbedTLS for SSL/TLS" OFF)
 +
 +set(openssl_default ON)
 +if(WIN32 OR CMAKE_USE_DARWINSSL OR CMAKE_USE_WINSSL OR CMAKE_USE_MBEDTLS)
 +  set(openssl_default OFF)
 +endif()
 +
 +collect_true(enabled_ssl_options enabled_ssl_options_count
 +  CMAKE_USE_WINSSL
 +  CMAKE_USE_DARWINSSL
 +  CMAKE_USE_OPENSSL
 +  CMAKE_USE_MBEDTLS
 +)
 +if(enabled_ssl_options_count GREATER 1)
 +  message(FATAL_ERROR "Multiple SSL options specified: ${enabled_ssl_options}. Please pick at most one and disable the rest.")
 +endif()
 +
 +if(CMAKE_USE_WINSSL)
 +  set(SSL_ENABLED ON)
 +  set(USE_SCHANNEL ON) # Windows native SSL/TLS support
 +  set(USE_WINDOWS_SSPI ON) # CMAKE_USE_WINSSL implies CURL_WINDOWS_SSPI
 +  list(APPEND CURL_LIBS "crypt32")
 +endif()
 +if(CURL_WINDOWS_SSPI)
 +  set(USE_WINDOWS_SSPI ON)
 +  set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DSECURITY_WIN32")
 +endif()
 +
 +if(CMAKE_USE_DARWINSSL)
 +  find_library(COREFOUNDATION_FRAMEWORK "CoreFoundation")
 +  if(NOT COREFOUNDATION_FRAMEWORK)
 +      message(FATAL_ERROR "CoreFoundation framework not found")
 +  endif()
 +
 +  find_library(SECURITY_FRAMEWORK "Security")
 +  if(NOT SECURITY_FRAMEWORK)
 +     message(FATAL_ERROR "Security framework not found")
 +  endif()
 +
 +  set(SSL_ENABLED ON)
 +  set(USE_DARWINSSL ON)
 +  list(APPEND CURL_LIBS "${COREFOUNDATION_FRAMEWORK}" "${SECURITY_FRAMEWORK}")
 +endif()
 +
 +if(CMAKE_USE_OPENSSL)
 +  find_package(OpenSSL REQUIRED)
 +  set(SSL_ENABLED ON)
 +  set(USE_OPENSSL ON)
 +  set(HAVE_LIBCRYPTO ON)
 +  set(HAVE_LIBSSL ON)
 +  list(APPEND CURL_LIBS ${OPENSSL_LIBRARIES})
 +  include_directories(${OPENSSL_INCLUDE_DIR})
 +  set(CMAKE_REQUIRED_INCLUDES ${OPENSSL_INCLUDE_DIR})
 +  check_include_file("openssl/crypto.h" HAVE_OPENSSL_CRYPTO_H)
 +  check_include_file("openssl/engine.h" HAVE_OPENSSL_ENGINE_H)
 +  check_include_file("openssl/err.h"    HAVE_OPENSSL_ERR_H)
 +  check_include_file("openssl/pem.h"    HAVE_OPENSSL_PEM_H)
 +  check_include_file("openssl/pkcs12.h" HAVE_OPENSSL_PKCS12_H)
 +  check_include_file("openssl/rsa.h"    HAVE_OPENSSL_RSA_H)
 +  check_include_file("openssl/ssl.h"    HAVE_OPENSSL_SSL_H)
 +  check_include_file("openssl/x509.h"   HAVE_OPENSSL_X509_H)
 +  check_include_file("openssl/rand.h"   HAVE_OPENSSL_RAND_H)
 +  check_symbol_exists(RAND_status "${CURL_INCLUDES}" HAVE_RAND_STATUS)
 +  check_symbol_exists(RAND_screen "${CURL_INCLUDES}" HAVE_RAND_SCREEN)
 +  check_symbol_exists(RAND_egd    "${CURL_INCLUDES}" HAVE_RAND_EGD)
 +
 +  # Optionally build with a specific CA cert bundle.
 +  if(CURL_CA_BUNDLE)
 +    add_definitions(-DCURL_CA_BUNDLE="${CURL_CA_BUNDLE}")
 +  endif()
 +  # Optionally build with a specific CA cert dir.
 +  if(CURL_CA_PATH)
 +    add_definitions(-DCURL_CA_PATH="${CURL_CA_PATH}")
 +  endif()
 +endif()
 +
 +if(CMAKE_USE_MBEDTLS)
 +  find_package(MbedTLS REQUIRED)
 +  set(SSL_ENABLED ON)
 +  set(USE_MBEDTLS ON)
 +  list(APPEND CURL_LIBS ${MBEDTLS_LIBRARIES})
 +  include_directories(${MBEDTLS_INCLUDE_DIRS})
 +endif()
 +
 +option(USE_NGHTTP2 "Use Nghttp2 library" OFF)
 +if(USE_NGHTTP2)
 +  find_package(NGHTTP2 REQUIRED)
 +  include_directories(${NGHTTP2_INCLUDE_DIRS})
 +  list(APPEND CURL_LIBS ${NGHTTP2_LIBRARIES})
 +endif()
 +
 +if(NOT CURL_DISABLE_LDAP)
 +  if(WIN32)
 +    option(USE_WIN32_LDAP "Use Windows LDAP implementation" ON)
 +    if(USE_WIN32_LDAP)
 +      check_library_exists_concat("wldap32" cldap_open HAVE_WLDAP32)
 +      if(NOT HAVE_WLDAP32)
 +        set(USE_WIN32_LDAP OFF)
 +      endif()
 +    endif()
 +  endif()
 +
 +  option(CMAKE_USE_OPENLDAP "Use OpenLDAP code." OFF)
 +  mark_as_advanced(CMAKE_USE_OPENLDAP)
 +  set(CMAKE_LDAP_LIB "ldap" CACHE STRING "Name or full path to ldap library")
 +  set(CMAKE_LBER_LIB "lber" CACHE STRING "Name or full path to lber library")
 +
 +  if(CMAKE_USE_OPENLDAP AND USE_WIN32_LDAP)
 +    message(FATAL_ERROR "Cannot use USE_WIN32_LDAP and CMAKE_USE_OPENLDAP at the same time")
 +  endif()
 +
 +  # Now that we know, we're not using windows LDAP...
 +  if(USE_WIN32_LDAP)
 +    check_include_file_concat("winldap.h" HAVE_WINLDAP_H)
 +    check_include_file_concat("winber.h"  HAVE_WINBER_H)
 +  else()
 +    # Check for LDAP
 +    set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_LIBRARIES})
 +    check_library_exists_concat(${CMAKE_LDAP_LIB} ldap_init HAVE_LIBLDAP)
 +    check_library_exists_concat(${CMAKE_LBER_LIB} ber_init HAVE_LIBLBER)
 +
 +    set(CMAKE_REQUIRED_INCLUDES_BAK ${CMAKE_REQUIRED_INCLUDES})
 +    set(CMAKE_LDAP_INCLUDE_DIR "" CACHE STRING "Path to LDAP include directory")
 +    if(CMAKE_LDAP_INCLUDE_DIR)
 +      list(APPEND CMAKE_REQUIRED_INCLUDES ${CMAKE_LDAP_INCLUDE_DIR})
 +    endif()
 +    check_include_file_concat("ldap.h"           HAVE_LDAP_H)
 +    check_include_file_concat("lber.h"           HAVE_LBER_H)
 +
 +    if(NOT HAVE_LDAP_H)
 +      message(STATUS "LDAP_H not found CURL_DISABLE_LDAP set ON")
 +      set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
 +      set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
 +    elseif(NOT HAVE_LIBLDAP)
 +      message(STATUS "LDAP library '${CMAKE_LDAP_LIB}' not found CURL_DISABLE_LDAP set ON")
 +      set(CURL_DISABLE_LDAP ON CACHE BOOL "" FORCE)
 +      set(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES_BAK}) #LDAP includes won't be used
 +    else()
 +      if(CMAKE_USE_OPENLDAP)
 +        set(USE_OPENLDAP ON)
 +      endif()
 +      if(CMAKE_LDAP_INCLUDE_DIR)
 +        include_directories(${CMAKE_LDAP_INCLUDE_DIR})
 +      endif()
 +      set(NEED_LBER_H ON)
 +      set(_HEADER_LIST)
 +      if(HAVE_WINDOWS_H)
 +        list(APPEND _HEADER_LIST "windows.h")
 +      endif()
 +      if(HAVE_SYS_TYPES_H)
 +        list(APPEND _HEADER_LIST "sys/types.h")
 +      endif()
 +      list(APPEND _HEADER_LIST "ldap.h")
 +
 +      set(_SRC_STRING "")
 +      foreach(_HEADER ${_HEADER_LIST})
 +        set(_INCLUDE_STRING "${_INCLUDE_STRING}#include <${_HEADER}>\n")
 +      endforeach()
 +
 +      set(_SRC_STRING
 +        "
 +        ${_INCLUDE_STRING}
 +        int main(int argc, char ** argv)
 +        {
 +          BerValue *bvp = NULL;
 +          BerElement *bep = ber_init(bvp);
 +          ber_free(bep, 1);
 +          return 0;
 +        }"
 +      )
 +      set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -DLDAP_DEPRECATED=1")
 +      list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LDAP_LIB})
 +      if(HAVE_LIBLBER)
 +        list(APPEND CMAKE_REQUIRED_LIBRARIES ${CMAKE_LBER_LIB})
 +      endif()
 +      check_c_source_compiles("${_SRC_STRING}" NOT_NEED_LBER_H)
 +
 +      if(NOT_NEED_LBER_H)
 +        set(NEED_LBER_H OFF)
 +      else()
 +        set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -DNEED_LBER_H")
 +      endif()
 +    endif()
 +  endif()
 +
 +endif()
 +
 +# No ldap, no ldaps.
 +if(CURL_DISABLE_LDAP)
 +  if(NOT CURL_DISABLE_LDAPS)
 +    message(STATUS "LDAP needs to be enabled to support LDAPS")
 +    set(CURL_DISABLE_LDAPS ON CACHE BOOL "" FORCE)
 +  endif()
 +endif()
 +
 +if(NOT CURL_DISABLE_LDAPS)
 +  check_include_file_concat("ldap_ssl.h" HAVE_LDAP_SSL_H)
 +  check_include_file_concat("ldapssl.h"  HAVE_LDAPSSL_H)
 +endif()
 +
 +# Check for idn
 +check_library_exists_concat("idn2" idn2_lookup_ul HAVE_LIBIDN2)
 +
 +# Check for symbol dlopen (same as HAVE_LIBDL)
 +check_library_exists("${CURL_LIBS}" dlopen "" HAVE_DLOPEN)
 +
 +if(0) # This code not needed for building within CMake.
 +option(CURL_ZLIB "Set to ON to enable building curl with zlib support." ON)
 +set(HAVE_LIBZ OFF)
 +set(HAVE_ZLIB_H OFF)
 +set(HAVE_ZLIB OFF)
 +if(CURL_ZLIB)
 +  find_package(ZLIB QUIET)
 +  if(ZLIB_FOUND)
 +    set(HAVE_ZLIB_H ON)
 +    set(HAVE_ZLIB ON)
 +    set(HAVE_LIBZ ON)
 +    list(APPEND CURL_LIBS ${ZLIB_LIBRARIES})
 +    include_directories(${ZLIB_INCLUDE_DIRS})
 +    list(APPEND CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIRS})
 +  endif()
 +endif()
 +endif()
 +
 +#-----------------------------------------------------------------------------
 +# CMake-specific curl code.
 +
 +if(CURL_SPECIAL_LIBZ)
 +  set(CURL_LIBS ${CURL_LIBS} "${CURL_SPECIAL_LIBZ}")
 +  include_directories(${CURL_SPECIAL_LIBZ_INCLUDES})
 +  set(HAVE_LIBZ 0)
 +  set(HAVE_ZLIB_H 0)
 +endif()
 +
 +#libSSH2
 +option(CMAKE_USE_LIBSSH2 "Use libSSH2" ON)
 +mark_as_advanced(CMAKE_USE_LIBSSH2)
 +set(USE_LIBSSH2 OFF)
 +set(HAVE_LIBSSH2 OFF)
 +set(HAVE_LIBSSH2_H OFF)
 +
 +if(CMAKE_USE_LIBSSH2)
 +  find_package(LibSSH2)
 +  if(LIBSSH2_FOUND)
 +    list(APPEND CURL_LIBS ${LIBSSH2_LIBRARY})
 +    set(CMAKE_REQUIRED_LIBRARIES ${LIBSSH2_LIBRARY})
 +    list(APPEND CMAKE_REQUIRED_INCLUDES "${LIBSSH2_INCLUDE_DIR}")
 +    include_directories("${LIBSSH2_INCLUDE_DIR}")
 +    set(HAVE_LIBSSH2 ON)
 +    set(USE_LIBSSH2 ON)
 +
 +    # find_package has already found the headers
 +    set(HAVE_LIBSSH2_H ON)
 +    set(CURL_INCLUDES ${CURL_INCLUDES} "${LIBSSH2_INCLUDE_DIR}/libssh2.h")
 +    set(CURL_TEST_DEFINES "${CURL_TEST_DEFINES} -DHAVE_LIBSSH2_H")
 +
 +    # now check for specific libssh2 symbols as they were added in different versions
 +    set(CMAKE_EXTRA_INCLUDE_FILES "libssh2.h")
 +    check_function_exists(libssh2_version           HAVE_LIBSSH2_VERSION)
 +    check_function_exists(libssh2_init              HAVE_LIBSSH2_INIT)
 +    check_function_exists(libssh2_exit              HAVE_LIBSSH2_EXIT)
 +    check_function_exists(libssh2_scp_send64        HAVE_LIBSSH2_SCP_SEND64)
 +    check_function_exists(libssh2_session_handshake HAVE_LIBSSH2_SESSION_HANDSHAKE)
 +    set(CMAKE_EXTRA_INCLUDE_FILES "")
 +
 +  endif(LIBSSH2_FOUND)
 +endif(CMAKE_USE_LIBSSH2)
 +
 +option(CMAKE_USE_GSSAPI "Use GSSAPI implementation (right now only Heimdal is supported with CMake build)" OFF)
 +mark_as_advanced(CMAKE_USE_GSSAPI)
 +
 +if(CMAKE_USE_GSSAPI)
 +  find_package(GSS)
 +
 +  set(HAVE_GSSAPI ${GSS_FOUND})
 +  if(GSS_FOUND)
 +
 +    message(STATUS "Found ${GSS_FLAVOUR} GSSAPI version: \"${GSS_VERSION}\"")
 +
 +    list(APPEND CMAKE_REQUIRED_INCLUDES ${GSS_INCLUDE_DIRECTORIES})
 +    check_include_file_concat("gssapi/gssapi.h"  HAVE_GSSAPI_GSSAPI_H)
 +    check_include_file_concat("gssapi/gssapi_generic.h" HAVE_GSSAPI_GSSAPI_GENERIC_H)
 +    check_include_file_concat("gssapi/gssapi_krb5.h" HAVE_GSSAPI_GSSAPI_KRB5_H)
 +
 +    if(GSS_FLAVOUR STREQUAL "Heimdal")
 +      set(HAVE_GSSHEIMDAL ON)
 +    else() # MIT
 +      set(HAVE_GSSMIT ON)
 +      set(_INCLUDE_LIST "")
 +      if(HAVE_GSSAPI_GSSAPI_H)
 +        list(APPEND _INCLUDE_LIST "gssapi/gssapi.h")
 +      endif()
 +      if(HAVE_GSSAPI_GSSAPI_GENERIC_H)
 +        list(APPEND _INCLUDE_LIST "gssapi/gssapi_generic.h")
 +      endif()
 +      if(HAVE_GSSAPI_GSSAPI_KRB5_H)
 +        list(APPEND _INCLUDE_LIST "gssapi/gssapi_krb5.h")
 +      endif()
 +
 +      string(REPLACE ";" " " _COMPILER_FLAGS_STR "${GSS_COMPILER_FLAGS}")
 +      string(REPLACE ";" " " _LINKER_FLAGS_STR "${GSS_LINKER_FLAGS}")
 +
 +      foreach(_dir ${GSS_LINK_DIRECTORIES})
 +        set(_LINKER_FLAGS_STR "${_LINKER_FLAGS_STR} -L\"${_dir}\"")
 +      endforeach()
 +
 +      set(CMAKE_REQUIRED_FLAGS "${_COMPILER_FLAGS_STR} ${_LINKER_FLAGS_STR}")
 +      set(CMAKE_REQUIRED_LIBRARIES ${GSS_LIBRARIES})
 +      check_symbol_exists("GSS_C_NT_HOSTBASED_SERVICE" ${_INCLUDE_LIST} HAVE_GSS_C_NT_HOSTBASED_SERVICE)
 +      if(NOT HAVE_GSS_C_NT_HOSTBASED_SERVICE)
 +        set(HAVE_OLD_GSSMIT ON)
 +      endif()
 +
 +    endif()
 +
 +    include_directories(${GSS_INCLUDE_DIRECTORIES})
 +    link_directories(${GSS_LINK_DIRECTORIES})
 +    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GSS_COMPILER_FLAGS}")
 +    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
 +    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GSS_LINKER_FLAGS}")
 +    list(APPEND CURL_LIBS ${GSS_LIBRARIES})
 +
 +  else()
 +    message(WARNING "GSSAPI support has been requested but no supporting libraries found. Skipping.")
 +  endif()
 +endif()
 +
 +option(ENABLE_UNIX_SOCKETS "Define if you want Unix domain sockets support" ON)
 +if(ENABLE_UNIX_SOCKETS)
 +  include(CheckStructHasMember)
 +  check_struct_has_member("struct sockaddr_un" sun_path "sys/un.h" USE_UNIX_SOCKETS)
 +else()
 +  unset(USE_UNIX_SOCKETS CACHE)
 +endif()
 +
 +
 +if(0) # This code not needed for building within CMake.
 +#
 +# CA handling
 +#
 +set(CURL_CA_BUNDLE "auto" CACHE STRING
 +    "Path to the CA bundle. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
 +set(CURL_CA_FALLBACK OFF CACHE BOOL
 +    "Set ON to use built-in CA store of TLS backend. Defaults to OFF")
 +set(CURL_CA_PATH "auto" CACHE STRING
 +    "Location of default CA path. Set 'none' to disable or 'auto' for auto-detection. Defaults to 'auto'.")
 +
 +if("${CURL_CA_BUNDLE}" STREQUAL "")
 +    message(FATAL_ERROR "Invalid value of CURL_CA_BUNDLE. Use 'none', 'auto' or file path.")
 +elseif("${CURL_CA_BUNDLE}" STREQUAL "none")
 +    unset(CURL_CA_BUNDLE CACHE)
 +elseif("${CURL_CA_BUNDLE}" STREQUAL "auto")
 +    unset(CURL_CA_BUNDLE CACHE)
 +    set(CURL_CA_BUNDLE_AUTODETECT TRUE)
 +else()
 +    set(CURL_CA_BUNDLE_SET TRUE)
 +endif()
 +
 +if("${CURL_CA_PATH}" STREQUAL "")
 +    message(FATAL_ERROR "Invalid value of CURL_CA_PATH. Use 'none', 'auto' or directory path.")
 +elseif("${CURL_CA_PATH}" STREQUAL "none")
 +    unset(CURL_CA_PATH CACHE)
 +elseif("${CURL_CA_PATH}" STREQUAL "auto")
 +    unset(CURL_CA_PATH CACHE)
 +    set(CURL_CA_PATH_AUTODETECT TRUE)
 +else()
 +    set(CURL_CA_PATH_SET TRUE)
 +endif()
 +
 +if(CURL_CA_BUNDLE_SET AND CURL_CA_PATH_AUTODETECT)
 +    # Skip autodetection of unset CA path because CA bundle is set explicitly
 +elseif(CURL_CA_PATH_SET AND CURL_CA_BUNDLE_AUTODETECT)
 +    # Skip autodetection of unset CA bundle because CA path is set explicitly
 +elseif(CURL_CA_PATH_AUTODETECT OR CURL_CA_BUNDLE_AUTODETECT)
 +    # first try autodetecting a CA bundle, then a CA path
 +
 +    if(CURL_CA_BUNDLE_AUTODETECT)
 +        set(SEARCH_CA_BUNDLE_PATHS
 +            /etc/ssl/certs/ca-certificates.crt
 +            /etc/pki/tls/certs/ca-bundle.crt
 +            /usr/share/ssl/certs/ca-bundle.crt
 +            /usr/local/share/certs/ca-root-nss.crt
 +            /etc/ssl/cert.pem)
 +
 +        foreach(SEARCH_CA_BUNDLE_PATH ${SEARCH_CA_BUNDLE_PATHS})
 +            if(EXISTS "${SEARCH_CA_BUNDLE_PATH}")
 +                message(STATUS "Found CA bundle: ${SEARCH_CA_BUNDLE_PATH}")
 +                set(CURL_CA_BUNDLE "${SEARCH_CA_BUNDLE_PATH}")
 +                set(CURL_CA_BUNDLE_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
 +                break()
 +            endif()
 +        endforeach()
 +    endif()
 +
 +    if(CURL_CA_PATH_AUTODETECT AND (NOT CURL_CA_PATH_SET))
 +        if(EXISTS "/etc/ssl/certs")
 +            set(CURL_CA_PATH "/etc/ssl/certs")
 +            set(CURL_CA_PATH_SET TRUE CACHE BOOL "Path to the CA bundle has been set")
 +        endif()
 +    endif()
 +endif()
 +
 +if(CURL_CA_PATH_SET AND NOT USE_OPENSSL AND NOT USE_MBEDTLS)
 +    message(FATAL_ERROR
 +            "CA path only supported by OpenSSL, GnuTLS or mbed TLS. "
 +            "Set CURL_CA_PATH=none or enable one of those TLS backends.")
 +endif()
 +endif()
 +
 +
 +# Check for header files
 +if(NOT UNIX)
 +  check_include_file_concat("windows.h"      HAVE_WINDOWS_H)
 +  check_include_file_concat("winsock.h"      HAVE_WINSOCK_H)
 +  check_include_file_concat("ws2tcpip.h"     HAVE_WS2TCPIP_H)
 +  check_include_file_concat("winsock2.h"     HAVE_WINSOCK2_H)
 +  if(NOT CURL_WINDOWS_SSPI AND USE_OPENSSL)
 +    set(CURL_LIBS ${CURL_LIBS} "crypt32")
 +  endif()
 +else()
 +  set(HAVE_WINDOWS_H 0)
 +  set(HAVE_WINSOCK_H 0)
 +  set(HAVE_WS2TCPIP_H 0)
 +  set(HAVE_WINSOCK2_H 0)
 +endif()
 +
 +check_include_file_concat("stdio.h"          HAVE_STDIO_H)
 +check_include_file_concat("inttypes.h"       HAVE_INTTYPES_H)
 +check_include_file_concat("sys/filio.h"      HAVE_SYS_FILIO_H)
 +check_include_file_concat("sys/ioctl.h"      HAVE_SYS_IOCTL_H)
 +check_include_file_concat("sys/param.h"      HAVE_SYS_PARAM_H)
 +check_include_file_concat("sys/poll.h"       HAVE_SYS_POLL_H)
 +check_include_file_concat("sys/resource.h"   HAVE_SYS_RESOURCE_H)
 +check_include_file_concat("sys/select.h"     HAVE_SYS_SELECT_H)
 +check_include_file_concat("sys/socket.h"     HAVE_SYS_SOCKET_H)
 +check_include_file_concat("sys/sockio.h"     HAVE_SYS_SOCKIO_H)
 +check_include_file_concat("sys/stat.h"       HAVE_SYS_STAT_H)
 +check_include_file_concat("sys/time.h"       HAVE_SYS_TIME_H)
 +check_include_file_concat("sys/types.h"      HAVE_SYS_TYPES_H)
 +check_include_file_concat("sys/uio.h"        HAVE_SYS_UIO_H)
 +check_include_file_concat("sys/un.h"         HAVE_SYS_UN_H)
 +check_include_file_concat("sys/utime.h"      HAVE_SYS_UTIME_H)
 +check_include_file_concat("sys/xattr.h"      HAVE_SYS_XATTR_H)
 +check_include_file_concat("alloca.h"         HAVE_ALLOCA_H)
 +check_include_file_concat("arpa/inet.h"      HAVE_ARPA_INET_H)
 +check_include_file_concat("arpa/tftp.h"      HAVE_ARPA_TFTP_H)
 +check_include_file_concat("assert.h"         HAVE_ASSERT_H)
 +check_include_file_concat("crypto.h"         HAVE_CRYPTO_H)
 +check_include_file_concat("des.h"            HAVE_DES_H)
 +check_include_file_concat("err.h"            HAVE_ERR_H)
 +check_include_file_concat("errno.h"          HAVE_ERRNO_H)
 +check_include_file_concat("fcntl.h"          HAVE_FCNTL_H)
 +check_include_file_concat("idn2.h"           HAVE_IDN2_H)
 +check_include_file_concat("ifaddrs.h"        HAVE_IFADDRS_H)
 +check_include_file_concat("io.h"             HAVE_IO_H)
 +check_include_file_concat("krb.h"            HAVE_KRB_H)
 +check_include_file_concat("libgen.h"         HAVE_LIBGEN_H)
 +check_include_file_concat("limits.h"         HAVE_LIMITS_H)
 +check_include_file_concat("locale.h"         HAVE_LOCALE_H)
 +check_include_file_concat("net/if.h"         HAVE_NET_IF_H)
 +check_include_file_concat("netdb.h"          HAVE_NETDB_H)
 +check_include_file_concat("netinet/in.h"     HAVE_NETINET_IN_H)
 +check_include_file_concat("netinet/tcp.h"    HAVE_NETINET_TCP_H)
 +
 +check_include_file_concat("pem.h"            HAVE_PEM_H)
 +check_include_file_concat("poll.h"           HAVE_POLL_H)
 +check_include_file_concat("pwd.h"            HAVE_PWD_H)
 +check_include_file_concat("rsa.h"            HAVE_RSA_H)
 +check_include_file_concat("setjmp.h"         HAVE_SETJMP_H)
 +check_include_file_concat("sgtty.h"          HAVE_SGTTY_H)
 +check_include_file_concat("signal.h"         HAVE_SIGNAL_H)
 +check_include_file_concat("ssl.h"            HAVE_SSL_H)
 +check_include_file_concat("stdbool.h"        HAVE_STDBOOL_H)
 +check_include_file_concat("stdint.h"         HAVE_STDINT_H)
 +check_include_file_concat("stdio.h"          HAVE_STDIO_H)
 +check_include_file_concat("stdlib.h"         HAVE_STDLIB_H)
 +check_include_file_concat("string.h"         HAVE_STRING_H)
 +check_include_file_concat("strings.h"        HAVE_STRINGS_H)
 +check_include_file_concat("stropts.h"        HAVE_STROPTS_H)
 +check_include_file_concat("termio.h"         HAVE_TERMIO_H)
 +check_include_file_concat("termios.h"        HAVE_TERMIOS_H)
 +check_include_file_concat("time.h"           HAVE_TIME_H)
 +check_include_file_concat("unistd.h"         HAVE_UNISTD_H)
 +check_include_file_concat("utime.h"          HAVE_UTIME_H)
 +check_include_file_concat("x509.h"           HAVE_X509_H)
 +
 +check_include_file_concat("process.h"        HAVE_PROCESS_H)
 +check_include_file_concat("stddef.h"         HAVE_STDDEF_H)
 +check_include_file_concat("dlfcn.h"          HAVE_DLFCN_H)
 +check_include_file_concat("malloc.h"         HAVE_MALLOC_H)
 +check_include_file_concat("memory.h"         HAVE_MEMORY_H)
 +check_include_file_concat("netinet/if_ether.h" HAVE_NETINET_IF_ETHER_H)
 +check_include_file_concat("stdint.h"        HAVE_STDINT_H)
 +check_include_file_concat("sockio.h"        HAVE_SOCKIO_H)
 +check_include_file_concat("sys/utsname.h"   HAVE_SYS_UTSNAME_H)
 +
 +check_type_size(size_t  SIZEOF_SIZE_T)
 +check_type_size(ssize_t  SIZEOF_SSIZE_T)
 +check_type_size("long long"  SIZEOF_LONG_LONG)
 +check_type_size("long"  SIZEOF_LONG)
 +check_type_size("short"  SIZEOF_SHORT)
 +check_type_size("int"  SIZEOF_INT)
 +check_type_size("__int64"  SIZEOF___INT64)
 +check_type_size("time_t"  SIZEOF_TIME_T)
 +
- # Make public versions of some type sizes for curlbuild.h.
- foreach(t INT LONG LONG_LONG SSIZE_T)
-   string(REPLACE "SIZEOF_" "CURL_SIZEOF_" CURL_SIZEOF_${t}_CODE "${SIZEOF_${t}_CODE}")
- endforeach()
- 
 +if(HAVE_SIZEOF_LONG_LONG)
 +  set(HAVE_LONGLONG 1)
 +  set(HAVE_LL 1)
 +endif(HAVE_SIZEOF_LONG_LONG)
 +
 +find_file(RANDOM_FILE urandom /dev)
 +mark_as_advanced(RANDOM_FILE)
 +
 +# Check for some functions that are used
 +if(HAVE_LIBWS2_32)
 +  set(CMAKE_REQUIRED_LIBRARIES ws2_32)
 +elseif(HAVE_LIBSOCKET)
 +  set(CMAKE_REQUIRED_LIBRARIES socket)
 +elseif(HAVE_LIBNETWORK)
 +  set(CMAKE_REQUIRED_LIBRARIES network)
 +endif()
 +
 +check_symbol_exists(basename      "${CURL_INCLUDES}" HAVE_BASENAME)
 +check_symbol_exists(socket        "${CURL_INCLUDES}" HAVE_SOCKET)
 +# poll on macOS is unreliable, it first did not exist, then was broken until
 +# fixed in 10.9 only to break again in 10.12.
 +if(NOT APPLE)
 +  check_symbol_exists(poll        "${CURL_INCLUDES}" HAVE_POLL)
 +endif()
 +check_symbol_exists(select        "${CURL_INCLUDES}" HAVE_SELECT)
 +check_symbol_exists(strdup        "${CURL_INCLUDES}" HAVE_STRDUP)
 +check_symbol_exists(strstr        "${CURL_INCLUDES}" HAVE_STRSTR)
 +check_symbol_exists(strtok_r      "${CURL_INCLUDES}" HAVE_STRTOK_R)
 +check_symbol_exists(strftime      "${CURL_INCLUDES}" HAVE_STRFTIME)
 +check_symbol_exists(uname         "${CURL_INCLUDES}" HAVE_UNAME)
 +check_symbol_exists(strcasecmp    "${CURL_INCLUDES}" HAVE_STRCASECMP)
 +check_symbol_exists(stricmp       "${CURL_INCLUDES}" HAVE_STRICMP)
 +check_symbol_exists(strcmpi       "${CURL_INCLUDES}" HAVE_STRCMPI)
 +check_symbol_exists(strncmpi      "${CURL_INCLUDES}" HAVE_STRNCMPI)
 +check_symbol_exists(alarm         "${CURL_INCLUDES}" HAVE_ALARM)
 +if(NOT HAVE_STRNCMPI)
 +  set(HAVE_STRCMPI)
 +endif(NOT HAVE_STRNCMPI)
 +check_symbol_exists(gethostbyaddr "${CURL_INCLUDES}" HAVE_GETHOSTBYADDR)
 +check_symbol_exists(gethostbyaddr_r "${CURL_INCLUDES}" HAVE_GETHOSTBYADDR_R)
 +check_symbol_exists(gettimeofday  "${CURL_INCLUDES}" HAVE_GETTIMEOFDAY)
 +check_symbol_exists(inet_addr     "${CURL_INCLUDES}" HAVE_INET_ADDR)
 +check_symbol_exists(inet_ntoa     "${CURL_INCLUDES}" HAVE_INET_NTOA)
 +check_symbol_exists(inet_ntoa_r   "${CURL_INCLUDES}" HAVE_INET_NTOA_R)
 +check_symbol_exists(tcsetattr     "${CURL_INCLUDES}" HAVE_TCSETATTR)
 +check_symbol_exists(tcgetattr     "${CURL_INCLUDES}" HAVE_TCGETATTR)
 +check_symbol_exists(perror        "${CURL_INCLUDES}" HAVE_PERROR)
 +check_symbol_exists(closesocket   "${CURL_INCLUDES}" HAVE_CLOSESOCKET)
 +check_symbol_exists(setvbuf       "${CURL_INCLUDES}" HAVE_SETVBUF)
 +check_symbol_exists(sigsetjmp     "${CURL_INCLUDES}" HAVE_SIGSETJMP)
 +check_symbol_exists(getpass_r     "${CURL_INCLUDES}" HAVE_GETPASS_R)
 +check_symbol_exists(strlcat       "${CURL_INCLUDES}" HAVE_STRLCAT)
 +check_symbol_exists(getpwuid      "${CURL_INCLUDES}" HAVE_GETPWUID)
 +check_symbol_exists(geteuid       "${CURL_INCLUDES}" HAVE_GETEUID)
 +check_symbol_exists(utime         "${CURL_INCLUDES}" HAVE_UTIME)
 +check_symbol_exists(gmtime_r      "${CURL_INCLUDES}" HAVE_GMTIME_R)
 +check_symbol_exists(localtime_r   "${CURL_INCLUDES}" HAVE_LOCALTIME_R)
 +
 +check_symbol_exists(gethostbyname   "${CURL_INCLUDES}" HAVE_GETHOSTBYNAME)
 +check_symbol_exists(gethostbyname_r "${CURL_INCLUDES}" HAVE_GETHOSTBYNAME_R)
 +
 +check_symbol_exists(signal        "${CURL_INCLUDES}" HAVE_SIGNAL_FUNC)
 +check_symbol_exists(SIGALRM       "${CURL_INCLUDES}" HAVE_SIGNAL_MACRO)
 +if(HAVE_SIGNAL_FUNC AND HAVE_SIGNAL_MACRO)
 +  set(HAVE_SIGNAL 1)
 +endif(HAVE_SIGNAL_FUNC AND HAVE_SIGNAL_MACRO)
 +check_symbol_exists(uname          "${CURL_INCLUDES}" HAVE_UNAME)
 +check_symbol_exists(strtoll        "${CURL_INCLUDES}" HAVE_STRTOLL)
 +check_symbol_exists(_strtoi64      "${CURL_INCLUDES}" HAVE__STRTOI64)
 +check_symbol_exists(strerror_r     "${CURL_INCLUDES}" HAVE_STRERROR_R)
 +check_symbol_exists(siginterrupt   "${CURL_INCLUDES}" HAVE_SIGINTERRUPT)
 +check_symbol_exists(perror         "${CURL_INCLUDES}" HAVE_PERROR)
 +check_symbol_exists(fork           "${CURL_INCLUDES}" HAVE_FORK)
 +check_symbol_exists(getaddrinfo    "${CURL_INCLUDES}" HAVE_GETADDRINFO)
 +check_symbol_exists(freeaddrinfo   "${CURL_INCLUDES}" HAVE_FREEADDRINFO)
 +check_symbol_exists(freeifaddrs    "${CURL_INCLUDES}" HAVE_FREEIFADDRS)
 +check_symbol_exists(pipe           "${CURL_INCLUDES}" HAVE_PIPE)
 +check_symbol_exists(ftruncate      "${CURL_INCLUDES}" HAVE_FTRUNCATE)
 +check_symbol_exists(getprotobyname "${CURL_INCLUDES}" HAVE_GETPROTOBYNAME)
 +check_symbol_exists(getrlimit      "${CURL_INCLUDES}" HAVE_GETRLIMIT)
 +check_symbol_exists(setlocale      "${CURL_INCLUDES}" HAVE_SETLOCALE)
 +check_symbol_exists(setrlimit      "${CURL_INCLUDES}" HAVE_SETRLIMIT)
 +check_symbol_exists(fcntl          "${CURL_INCLUDES}" HAVE_FCNTL)
 +check_symbol_exists(ioctl          "${CURL_INCLUDES}" HAVE_IOCTL)
 +check_symbol_exists(setsockopt     "${CURL_INCLUDES}" HAVE_SETSOCKOPT)
 +
 +# symbol exists in win32, but function does not.
- check_function_exists(inet_pton HAVE_INET_PTON)
++if(WIN32)
++  if(ENABLE_INET_PTON)
++    check_function_exists(inet_pton HAVE_INET_PTON)
++    # _WIN32_WINNT_VISTA (0x0600)
++    add_definitions(-D_WIN32_WINNT=0x0600)
++  else()
++    # _WIN32_WINNT_WINXP (0x0501)
++    add_definitions(-D_WIN32_WINNT=0x0501)
++  endif()
++else()
++    check_function_exists(inet_pton HAVE_INET_PTON)
++endif()
 +
 +check_symbol_exists(fsetxattr "${CURL_INCLUDES}" HAVE_FSETXATTR)
 +if(HAVE_FSETXATTR)
 +  foreach(CURL_TEST HAVE_FSETXATTR_5 HAVE_FSETXATTR_6)
 +    curl_internal_test_run(${CURL_TEST})
 +  endforeach(CURL_TEST)
 +endif(HAVE_FSETXATTR)
 +
 +# sigaction and sigsetjmp are special. Use special mechanism for
 +# detecting those, but only if previous attempt failed.
 +if(HAVE_SIGNAL_H)
 +  check_symbol_exists(sigaction "signal.h" HAVE_SIGACTION)
 +endif(HAVE_SIGNAL_H)
 +
 +if(NOT HAVE_SIGSETJMP)
 +  if(HAVE_SETJMP_H)
 +    check_symbol_exists(sigsetjmp "setjmp.h" HAVE_MACRO_SIGSETJMP)
 +    if(HAVE_MACRO_SIGSETJMP)
 +      set(HAVE_SIGSETJMP 1)
 +    endif(HAVE_MACRO_SIGSETJMP)
 +  endif(HAVE_SETJMP_H)
 +endif(NOT HAVE_SIGSETJMP)
 +
 +# If there is no stricmp(), do not allow LDAP to parse URLs
 +if(NOT HAVE_STRICMP)
 +  set(HAVE_LDAP_URL_PARSE 1)
 +endif(NOT HAVE_STRICMP)
 +
 +# Do curl specific tests
 +foreach(CURL_TEST
 +    HAVE_FCNTL_O_NONBLOCK
 +    HAVE_IOCTLSOCKET
 +    HAVE_IOCTLSOCKET_CAMEL
 +    HAVE_IOCTLSOCKET_CAMEL_FIONBIO
 +    HAVE_IOCTLSOCKET_FIONBIO
 +    HAVE_IOCTL_FIONBIO
 +    HAVE_IOCTL_SIOCGIFADDR
 +    HAVE_SETSOCKOPT_SO_NONBLOCK
 +    HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
 +    TIME_WITH_SYS_TIME
 +    HAVE_O_NONBLOCK
 +    HAVE_GETHOSTBYADDR_R_5
 +    HAVE_GETHOSTBYADDR_R_7
 +    HAVE_GETHOSTBYADDR_R_8
 +    HAVE_GETHOSTBYADDR_R_5_REENTRANT
 +    HAVE_GETHOSTBYADDR_R_7_REENTRANT
 +    HAVE_GETHOSTBYADDR_R_8_REENTRANT
 +    HAVE_GETHOSTBYNAME_R_3
 +    HAVE_GETHOSTBYNAME_R_5
 +    HAVE_GETHOSTBYNAME_R_6
 +    HAVE_GETHOSTBYNAME_R_3_REENTRANT
 +    HAVE_GETHOSTBYNAME_R_5_REENTRANT
 +    HAVE_GETHOSTBYNAME_R_6_REENTRANT
 +    HAVE_SOCKLEN_T
 +    HAVE_IN_ADDR_T
 +    HAVE_BOOL_T
 +    STDC_HEADERS
 +    RETSIGTYPE_TEST
 +    HAVE_INET_NTOA_R_DECL
 +    HAVE_INET_NTOA_R_DECL_REENTRANT
 +    HAVE_GETADDRINFO
 +    HAVE_FILE_OFFSET_BITS
 +    )
 +  curl_internal_test(${CURL_TEST})
 +endforeach(CURL_TEST)
 +
 +if(HAVE_FILE_OFFSET_BITS)
 +  set(_FILE_OFFSET_BITS 64)
 +  set(CMAKE_REQUIRED_FLAGS "-D_FILE_OFFSET_BITS=64")
 +endif(HAVE_FILE_OFFSET_BITS)
 +check_type_size("off_t"  SIZEOF_OFF_T)
++
++# include this header to get the type
++set(CMAKE_REQUIRED_INCLUDES "${CURL_SOURCE_DIR}/include")
++set(CMAKE_EXTRA_INCLUDE_FILES "curl/system.h")
++check_type_size("curl_off_t"  SIZEOF_CURL_OFF_T)
++set(CMAKE_EXTRA_INCLUDE_FILES "")
++
 +set(CMAKE_REQUIRED_FLAGS)
 +
 +foreach(CURL_TEST
 +    HAVE_GLIBC_STRERROR_R
 +    HAVE_POSIX_STRERROR_R
 +    )
 +  curl_internal_test_run(${CURL_TEST})
 +endforeach(CURL_TEST)
 +
 +# Check for reentrant
 +foreach(CURL_TEST
 +    HAVE_GETHOSTBYADDR_R_5
 +    HAVE_GETHOSTBYADDR_R_7
 +    HAVE_GETHOSTBYADDR_R_8
 +    HAVE_GETHOSTBYNAME_R_3
 +    HAVE_GETHOSTBYNAME_R_5
 +    HAVE_GETHOSTBYNAME_R_6
 +    HAVE_INET_NTOA_R_DECL_REENTRANT)
 +  if(NOT ${CURL_TEST})
 +    if(${CURL_TEST}_REENTRANT)
 +      set(NEED_REENTRANT 1)
 +    endif(${CURL_TEST}_REENTRANT)
 +  endif(NOT ${CURL_TEST})
 +endforeach(CURL_TEST)
 +
 +if(NEED_REENTRANT)
 +  foreach(CURL_TEST
 +      HAVE_GETHOSTBYADDR_R_5
 +      HAVE_GETHOSTBYADDR_R_7
 +      HAVE_GETHOSTBYADDR_R_8
 +      HAVE_GETHOSTBYNAME_R_3
 +      HAVE_GETHOSTBYNAME_R_5
 +      HAVE_GETHOSTBYNAME_R_6)
 +    set(${CURL_TEST} 0)
 +    if(${CURL_TEST}_REENTRANT)
 +      set(${CURL_TEST} 1)
 +    endif(${CURL_TEST}_REENTRANT)
 +  endforeach(CURL_TEST)
 +endif(NEED_REENTRANT)
 +
 +if(HAVE_INET_NTOA_R_DECL_REENTRANT)
 +  set(HAVE_INET_NTOA_R_DECL 1)
 +  set(NEED_REENTRANT 1)
 +endif(HAVE_INET_NTOA_R_DECL_REENTRANT)
 +
 +# Some other minor tests
 +
 +if(NOT HAVE_IN_ADDR_T)
 +  set(in_addr_t "unsigned long")
 +endif(NOT HAVE_IN_ADDR_T)
 +
 +# Fix libz / zlib.h
 +
 +if(NOT CURL_SPECIAL_LIBZ)
 +  if(NOT HAVE_LIBZ)
 +    set(HAVE_ZLIB_H 0)
 +  endif(NOT HAVE_LIBZ)
 +
 +  if(NOT HAVE_ZLIB_H)
 +    set(HAVE_LIBZ 0)
 +  endif(NOT HAVE_ZLIB_H)
 +endif(NOT CURL_SPECIAL_LIBZ)
 +
 +# Check for nonblocking
 +set(HAVE_DISABLED_NONBLOCKING 1)
 +if(HAVE_FIONBIO OR
 +    HAVE_IOCTLSOCKET OR
 +    HAVE_IOCTLSOCKET_CASE OR
 +    HAVE_O_NONBLOCK)
 +  set(HAVE_DISABLED_NONBLOCKING)
 +endif(HAVE_FIONBIO OR
 +  HAVE_IOCTLSOCKET OR
 +  HAVE_IOCTLSOCKET_CASE OR
 +  HAVE_O_NONBLOCK)
 +
 +if(RETSIGTYPE_TEST)
 +  set(RETSIGTYPE void)
 +else(RETSIGTYPE_TEST)
 +  set(RETSIGTYPE int)
 +endif(RETSIGTYPE_TEST)
 +
 +if(CMAKE_COMPILER_IS_GNUCC AND APPLE)
 +  include(CheckCCompilerFlag)
 +  check_c_compiler_flag(-Wno-long-double HAVE_C_FLAG_Wno_long_double)
 +  if(HAVE_C_FLAG_Wno_long_double)
 +    # The Mac version of GCC warns about use of long double.  Disable it.
 +    get_source_file_property(MPRINTF_COMPILE_FLAGS mprintf.c COMPILE_FLAGS)
 +    if(MPRINTF_COMPILE_FLAGS)
 +      set(MPRINTF_COMPILE_FLAGS "${MPRINTF_COMPILE_FLAGS} -Wno-long-double")
 +    else(MPRINTF_COMPILE_FLAGS)
 +      set(MPRINTF_COMPILE_FLAGS "-Wno-long-double")
 +    endif(MPRINTF_COMPILE_FLAGS)
 +    set_source_files_properties(mprintf.c PROPERTIES
 +      COMPILE_FLAGS ${MPRINTF_COMPILE_FLAGS})
 +  endif(HAVE_C_FLAG_Wno_long_double)
 +endif(CMAKE_COMPILER_IS_GNUCC AND APPLE)
 +
 +if(HAVE_SOCKLEN_T)
 +  set(CURL_HAVE_SOCKLEN_T 1)
 +  set(CURL_TYPEOF_CURL_SOCKLEN_T "socklen_t")
 +  if(WIN32)
 +    set(CMAKE_EXTRA_INCLUDE_FILES "winsock2.h;ws2tcpip.h")
 +  elseif(HAVE_SYS_SOCKET_H)
 +    set(CMAKE_EXTRA_INCLUDE_FILES "sys/socket.h")
 +  endif()
 +  check_type_size("socklen_t" CURL_SIZEOF_CURL_SOCKLEN_T)
 +  set(CMAKE_EXTRA_INCLUDE_FILES)
 +  if(NOT HAVE_CURL_SIZEOF_CURL_SOCKLEN_T)
 +    message(FATAL_ERROR
 +     "Check for sizeof socklen_t failed, see CMakeFiles/CMakerror.log")
 +  endif()
 +else()
 +  set(CURL_HAVE_SOCKLEN_T 0)
 +endif()
 +
- # TODO test which of these headers are required for the typedefs used in curlbuild.h
++# TODO test which of these headers are required
 +if(WIN32)
 +  set(CURL_PULL_WS2TCPIP_H ${HAVE_WS2TCPIP_H})
 +else()
 +  set(CURL_PULL_SYS_TYPES_H ${HAVE_SYS_TYPES_H})
 +  set(CURL_PULL_SYS_SOCKET_H ${HAVE_SYS_SOCKET_H})
 +  set(CURL_PULL_SYS_POLL_H ${HAVE_SYS_POLL_H})
 +endif()
 +set(CURL_PULL_STDINT_H ${HAVE_STDINT_H})
 +set(CURL_PULL_INTTYPES_H ${HAVE_INTTYPES_H})
 +
 +include(CMake/OtherTests.cmake)
 +
 +add_definitions(-DHAVE_CONFIG_H)
 +
- # For windows, do not allow the compiler to use default target (Vista).
- if(WIN32)
-   add_definitions(-D_WIN32_WINNT=0x0501)
- endif(WIN32)
- 
 +# For windows, all compilers used by cmake should support large files
 +if(WIN32)
 +  set(USE_WIN32_LARGE_FILES ON)
 +endif(WIN32)
 +
 +if(MSVC)
 +  add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
++  if(CMAKE_C_FLAGS MATCHES "/W[0-4]")
++    string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
++  else(CMAKE_C_FLAGS MATCHES "/W[0-4]")
++    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
++  endif(CMAKE_C_FLAGS MATCHES "/W[0-4]")
 +endif(MSVC)
 +
 +# Ugly (but functional) way to include "Makefile.inc" by transforming it (= regenerate it).
 +function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)
 +  file(READ ${INPUT_FILE} MAKEFILE_INC_TEXT)
 +  string(REPLACE "$(top_srcdir)"   "\${CURL_SOURCE_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
 +  string(REPLACE "$(top_builddir)" "\${CURL_BINARY_DIR}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
 +
 +  string(REGEX REPLACE "\\\\\n" "!π!α!" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
 +  string(REGEX REPLACE "([a-zA-Z_][a-zA-Z0-9_]*)[\t ]*=[\t ]*([^\n]*)" "SET(\\1 \\2)" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
 +  string(REPLACE "!π!α!" "\n" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})
 +
 +  string(REGEX REPLACE "\\$\\(([a-zA-Z_][a-zA-Z0-9_]*)\\)" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})    # Replace $() with ${}
 +  string(REGEX REPLACE "@([a-zA-Z_][a-zA-Z0-9_]*)@" "\${\\1}" MAKEFILE_INC_TEXT ${MAKEFILE_INC_TEXT})    # Replace @@ with ${}, even if that may not be read by CMake scripts.
 +  file(WRITE ${OUTPUT_FILE} ${MAKEFILE_INC_TEXT})
 +
 +endfunction()
 +
- if(0) # This code not needed for building within CMake.
- add_subdirectory(docs)
++if(USE_MANUAL)
++  add_subdirectory(docs)
 +endif()
++
 +add_subdirectory(lib)
++
 +if(BUILD_CURL_EXE)
 +  add_subdirectory(src)
 +endif()
 +
 +#-----------------------------------------------------------------------------
 +# CMake-specific curl code.
 +add_executable(LIBCURL curltest.c)
 +target_link_libraries(LIBCURL cmcurl)
 +
 +if(CMAKE_CURL_TEST_URL)
 +  add_test(curl LIBCURL ${CMAKE_CURL_TEST_URL})
 +endif()
 +
 +install(FILES COPYING DESTINATION ${CMAKE_DOC_DIR}/cmcurl)
 +#-----------------------------------------------------------------------------
 +
 +if(0) # This code not needed for building within CMake.
 +include(CTest)
 +if(BUILD_TESTING)
 +  add_subdirectory(tests)
 +endif()
 +
 +# Helper to populate a list (_items) with a label when conditions (the remaining
 +# args) are satisfied
 +function(_add_if label)
 +  # TODO need to disable policy CMP0054 (CMake 3.1) to allow this indirection
 +  if(${ARGN})
 +    set(_items ${_items} "${label}" PARENT_SCOPE)
 +  endif()
 +endfunction()
 +
 +# Clear list and try to detect available features
 +set(_items)
 +_add_if("WinSSL"        SSL_ENABLED AND USE_WINDOWS_SSPI)
 +_add_if("OpenSSL"       SSL_ENABLED AND USE_OPENSSL)
 +_add_if("DarwinSSL"     SSL_ENABLED AND USE_DARWINSSL)
 +_add_if("mbedTLS"       SSL_ENABLED AND USE_MBEDTLS)
 +_add_if("IPv6"          ENABLE_IPV6)
 +_add_if("unix-sockets"  USE_UNIX_SOCKETS)
 +_add_if("libz"          HAVE_LIBZ)
 +_add_if("AsynchDNS"     USE_ARES OR USE_THREADS_POSIX OR USE_THREADS_WIN32)
 +_add_if("IDN"           HAVE_LIBIDN2)
 +_add_if("Largefile"     (CURL_SIZEOF_CURL_OFF_T GREATER 4) AND
 +                        ((SIZEOF_OFF_T GREATER 4) OR USE_WIN32_LARGE_FILES))
 +# TODO SSP1 (WinSSL) check is missing
 +_add_if("SSPI"          USE_WINDOWS_SSPI)
 +_add_if("GSS-API"       HAVE_GSSAPI)
 +# TODO SSP1 missing for SPNEGO
 +_add_if("SPNEGO"        NOT CURL_DISABLE_CRYPTO_AUTH AND
 +                        (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
 +_add_if("Kerberos"      NOT CURL_DISABLE_CRYPTO_AUTH AND
 +                        (HAVE_GSSAPI OR USE_WINDOWS_SSPI))
 +# NTLM support requires crypto function adaptions from various SSL libs
 +# TODO alternative SSL libs tests for SSP1, GNUTLS, NSS
 +if(NOT CURL_DISABLE_CRYPTO_AUTH AND (USE_OPENSSL OR USE_WINDOWS_SSPI OR USE_DARWINSSL OR USE_MBEDTLS))
 +  _add_if("NTLM"        1)
 +  # TODO missing option (autoconf: --enable-ntlm-wb)
 +  _add_if("NTLM_WB"     NOT CURL_DISABLE_HTTP AND NTLM_WB_ENABLED)
 +endif()
 +# TODO missing option (--enable-tls-srp), depends on GNUTLS_SRP/OPENSSL_SRP
 +_add_if("TLS-SRP"       USE_TLS_SRP)
 +# TODO option --with-nghttp2 tests for nghttp2 lib and nghttp2/nghttp2.h header
 +_add_if("HTTP2"         USE_NGHTTP2)
 +string(REPLACE ";" " " SUPPORT_FEATURES "${_items}")
 +message(STATUS "Enabled features: ${SUPPORT_FEATURES}")
 +
 +# Clear list and try to detect available protocols
 +set(_items)
 +_add_if("HTTP"          NOT CURL_DISABLE_HTTP)
 +_add_if("HTTPS"         NOT CURL_DISABLE_HTTP AND SSL_ENABLED)
 +_add_if("FTP"           NOT CURL_DISABLE_FTP)
 +_add_if("FTPS"          NOT CURL_DISABLE_FTP AND SSL_ENABLED)
 +_add_if("FILE"          NOT CURL_DISABLE_FILE)
 +_add_if("TELNET"        NOT CURL_DISABLE_TELNET)
 +_add_if("LDAP"          NOT CURL_DISABLE_LDAP)
 +# CURL_DISABLE_LDAP implies CURL_DISABLE_LDAPS
 +# TODO check HAVE_LDAP_SSL (in autoconf this is enabled with --enable-ldaps)
 +_add_if("LDAPS"         NOT CURL_DISABLE_LDAPS AND
 +                        ((USE_OPENLDAP AND SSL_ENABLED) OR
 +                        (NOT USE_OPENLDAP AND HAVE_LDAP_SSL)))
 +_add_if("DICT"          NOT CURL_DISABLE_DICT)
 +_add_if("TFTP"          NOT CURL_DISABLE_TFTP)
 +_add_if("GOPHER"        NOT CURL_DISABLE_GOPHER)
 +_add_if("POP3"          NOT CURL_DISABLE_POP3)
 +_add_if("POP3S"         NOT CURL_DISABLE_POP3 AND SSL_ENABLED)
 +_add_if("IMAP"          NOT CURL_DISABLE_IMAP)
 +_add_if("IMAPS"         NOT CURL_DISABLE_IMAP AND SSL_ENABLED)
 +_add_if("SMTP"          NOT CURL_DISABLE_SMTP)
 +_add_if("SMTPS"         NOT CURL_DISABLE_SMTP AND SSL_ENABLED)
 +_add_if("SCP"           USE_LIBSSH2)
 +_add_if("SFTP"          USE_LIBSSH2)
 +_add_if("RTSP"          NOT CURL_DISABLE_RTSP)
 +_add_if("RTMP"          USE_LIBRTMP)
 +list(SORT _items)
 +string(REPLACE ";" " " SUPPORT_PROTOCOLS "${_items}")
 +message(STATUS "Enabled protocols: ${SUPPORT_PROTOCOLS}")
 +
 +# curl-config needs the following options to be set.
 +set(CC                      "${CMAKE_C_COMPILER}")
 +# TODO probably put a -D... options here?
 +set(CONFIGURE_OPTIONS       "")
 +# TODO when to set "-DCURL_STATICLIB" for CPPFLAG_CURL_STATICLIB?
 +set(CPPFLAG_CURL_STATICLIB  "")
 +set(CURLVERSION             "${CURL_VERSION}")
 +set(ENABLE_SHARED           "yes")
 +if(CURL_STATICLIB)
 +  set(ENABLE_STATIC         "yes")
 +else()
 +  set(ENABLE_STATIC         "no")
 +endif()
 +set(exec_prefix             "\${prefix}")
 +set(includedir              "\${prefix}/include")
 +set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
 +set(LIBCURL_LIBS            "")
 +set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
 +foreach(_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${CURL_LIBS})
-   if(_lib MATCHES ".*/.*")
++  if(_lib MATCHES ".*/.*" OR _lib MATCHES "^-")
 +    set(LIBCURL_LIBS          "${LIBCURL_LIBS} ${_lib}")
 +  else()
 +    set(LIBCURL_LIBS          "${LIBCURL_LIBS} -l${_lib}")
 +  endif()
 +endforeach()
 +# "a" (Linux) or "lib" (Windows)
 +string(REPLACE "." "" libext "${CMAKE_STATIC_LIBRARY_SUFFIX}")
 +set(prefix                  "${CMAKE_INSTALL_PREFIX}")
 +# Set this to "yes" to append all libraries on which -lcurl is dependent
 +set(REQUIRE_LIB_DEPS        "no")
 +# SUPPORT_FEATURES
 +# SUPPORT_PROTOCOLS
 +set(VERSIONNUM              "${CURL_VERSION_NUM}")
 +
 +# Finally generate a "curl-config" matching this config
 +configure_file("${CURL_SOURCE_DIR}/curl-config.in"
 +               "${CURL_BINARY_DIR}/curl-config" @ONLY)
 +install(FILES "${CURL_BINARY_DIR}/curl-config"
 +        DESTINATION bin
 +        PERMISSIONS
 +          OWNER_READ OWNER_WRITE OWNER_EXECUTE
 +          GROUP_READ GROUP_EXECUTE
 +          WORLD_READ WORLD_EXECUTE)
 +
 +# Finally generate a pkg-config file matching this config
 +configure_file("${CURL_SOURCE_DIR}/libcurl.pc.in"
 +               "${CURL_BINARY_DIR}/libcurl.pc" @ONLY)
 +install(FILES "${CURL_BINARY_DIR}/libcurl.pc"
 +        DESTINATION lib/pkgconfig)
 +
 +# This needs to be run very last so other parts of the scripts can take advantage of this.
 +if(NOT CURL_CONFIG_HAS_BEEN_RUN_BEFORE)
 +  set(CURL_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether this is the first time running CMake or if CMake has been configured before")
 +endif()
 +
- # Installation.
- # First, install generated curlbuild.h
- install(FILES "${CMAKE_CURRENT_BINARY_DIR}/include/curl/curlbuild.h"
-     DESTINATION include/curl )
- # Next, install other headers excluding curlbuild.h
++# install headers
 +install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/curl"
 +    DESTINATION include
-     FILES_MATCHING PATTERN "*.h"
-     PATTERN "curlbuild.h" EXCLUDE)
- 
++    FILES_MATCHING PATTERN "*.h")
 +
 +# Workaround for MSVS10 to avoid the Dialog Hell
 +# FIXME: This could be removed with future version of CMake.
 +if(MSVC_VERSION EQUAL 1600)
 +  set(CURL_SLN_FILENAME "${CMAKE_CURRENT_BINARY_DIR}/CURL.sln")
 +  if(EXISTS "${CURL_SLN_FILENAME}")
 +    file(APPEND "${CURL_SLN_FILENAME}" "\n# This should be regenerated!\n")
 +  endif()
 +endif()
++
++if(NOT TARGET uninstall)
++  configure_file(
++      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/cmake_uninstall.cmake.in
++      ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake
++      IMMEDIATE @ONLY)
++
++  add_custom_target(uninstall
++      COMMAND ${CMAKE_COMMAND} -P
++      ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake)
++endif()
 +endif()
diff --cc Utilities/cmcurl/include/curl/curl.h
index 3955212,0000000..5b4fd0f
mode 100644,000000..100644
--- a/Utilities/cmcurl/include/curl/curl.h
+++ b/Utilities/cmcurl/include/curl/curl.h
@@@ -1,2555 -1,0 +1,2742 @@@
 +#ifndef __CURL_CURL_H
 +#define __CURL_CURL_H
 +/***************************************************************************
 + *                                  _   _ ____  _
 + *  Project                     ___| | | |  _ \| |
 + *                             / __| | | | |_) | |
 + *                            | (__| |_| |  _ <| |___
 + *                             \___|\___/|_| \_\_____|
 + *
 + * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 + *
 + * This software is licensed as described in the file COPYING, which
 + * you should have received as part of this distribution. The terms
 + * are also available at https://curl.haxx.se/docs/copyright.html.
 + *
 + * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 + * copies of the Software, and permit persons to whom the Software is
 + * furnished to do so, under the terms of the COPYING file.
 + *
 + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 + * KIND, either express or implied.
 + *
 + ***************************************************************************/
 +
 +/*
 + * If you have libcurl problems, all docs and details are found here:
 + *   https://curl.haxx.se/libcurl/
 + *
 + * curl-library mailing list subscription and unsubscription web interface:
 + *   https://cool.haxx.se/mailman/listinfo/curl-library/
 + */
 +
 +#ifdef CURL_NO_OLDIES
 +#define CURL_STRICTER
 +#endif
 +
 +#include "curlver.h"         /* libcurl version defines   */
 +#include "system.h"          /* determine things run-time */
- #include "cmcurl/include/curl/curlbuild.h" /* libcurl build definitions */
- #include "curlrules.h"       /* libcurl rules enforcement */
 +
 +/*
 + * Define WIN32 when build target is Win32 API
 + */
 +
 +#if (defined(_WIN32) || defined(__WIN32__)) && \
 +     !defined(WIN32) && !defined(__SYMBIAN32__)
 +#define WIN32
 +#endif
 +
 +#include <stdio.h>
 +#include <limits.h>
 +
 +#if defined(__FreeBSD__) && (__FreeBSD__ >= 2)
 +/* Needed for __FreeBSD_version symbol definition */
 +#include <osreldate.h>
 +#endif
 +
 +/* The include stuff here below is mainly for time_t! */
 +#include <sys/types.h>
 +#include <time.h>
 +
 +#if defined(WIN32) && !defined(_WIN32_WCE) && !defined(__CYGWIN__)
 +#if !(defined(_WINSOCKAPI_) || defined(_WINSOCK_H) || \
 +      defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H))
 +/* The check above prevents the winsock2 inclusion if winsock.h already was
 +   included, since they can't co-exist without problems */
 +#include <winsock2.h>
 +#include <ws2tcpip.h>
 +#endif
 +#endif
 +
 +/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
 +   libc5-based Linux systems. Only include it on systems that are known to
 +   require it! */
 +#if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
 +    defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
 +    defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
++    defined(__CYGWIN__) || \
 +   (defined(__FreeBSD_version) && (__FreeBSD_version < 800000))
 +#include <sys/select.h>
 +#endif
 +
 +#if !defined(WIN32) && !defined(_WIN32_WCE)
 +#include <sys/socket.h>
 +#endif
 +
 +#if !defined(WIN32) && !defined(__WATCOMC__) && !defined(__VXWORKS__)
 +#include <sys/time.h>
 +#endif
 +
 +#if defined __BEOS__ || defined __HAIKU__
 +#include <support/SupportDefs.h>
 +#endif
 +
 +#ifdef  __cplusplus
 +extern "C" {
 +#endif
 +
 +#if defined(BUILDING_LIBCURL) || defined(CURL_STRICTER)
 +typedef struct Curl_easy CURL;
 +typedef struct Curl_share CURLSH;
 +#else
 +typedef void CURL;
 +typedef void CURLSH;
 +#endif
 +
 +/*
 + * libcurl external API function linkage decorations.
 + */
 +
 +#ifdef CURL_STATICLIB
 +#  define CURL_EXTERN
 +#elif defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)
 +#  if defined(BUILDING_LIBCURL)
 +#    define CURL_EXTERN  __declspec(dllexport)
 +#  else
 +#    define CURL_EXTERN  __declspec(dllimport)
 +#  endif
 +#elif defined(BUILDING_LIBCURL) && defined(CURL_HIDDEN_SYMBOLS)
 +#  define CURL_EXTERN CURL_EXTERN_SYMBOL
 +#else
 +#  define CURL_EXTERN
 +#endif
 +
 +#ifndef curl_socket_typedef
 +/* socket typedef */
 +#if defined(WIN32) && !defined(__LWIP_OPT_H__) && !defined(LWIP_HDR_OPT_H)
 +typedef SOCKET curl_socket_t;
 +#define CURL_SOCKET_BAD INVALID_SOCKET
 +#else
 +typedef int curl_socket_t;
 +#define CURL_SOCKET_BAD -1
 +#endif
 +#define curl_socket_typedef
 +#endif /* curl_socket_typedef */
 +
++/* enum for the different supported SSL backends */
++typedef enum {
++  CURLSSLBACKEND_NONE = 0,
++  CURLSSLBACKEND_OPENSSL = 1,
++  CURLSSLBACKEND_GNUTLS = 2,
++  CURLSSLBACKEND_NSS = 3,
++  CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
++  CURLSSLBACKEND_GSKIT = 5,
++  CURLSSLBACKEND_POLARSSL = 6,
++  CURLSSLBACKEND_WOLFSSL = 7,
++  CURLSSLBACKEND_SCHANNEL = 8,
++  CURLSSLBACKEND_DARWINSSL = 9,
++  CURLSSLBACKEND_AXTLS = 10,
++  CURLSSLBACKEND_MBEDTLS = 11
++} curl_sslbackend;
++
++/* aliases for library clones and renames */
++#define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
++#define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
++#define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
++
 +struct curl_httppost {
 +  struct curl_httppost *next;       /* next entry in the list */
 +  char *name;                       /* pointer to allocated name */
 +  long namelength;                  /* length of name length */
 +  char *contents;                   /* pointer to allocated data contents */
 +  long contentslength;              /* length of contents field, see also
 +                                       CURL_HTTPPOST_LARGE */
 +  char *buffer;                     /* pointer to allocated buffer contents */
 +  long bufferlength;                /* length of buffer field */
 +  char *contenttype;                /* Content-Type */
 +  struct curl_slist *contentheader; /* list of extra headers for this form */
 +  struct curl_httppost *more;       /* if one field name has more than one
 +                                       file, this link should link to following
 +                                       files */
 +  long flags;                       /* as defined below */
 +
 +/* specified content is a file name */
 +#define CURL_HTTPPOST_FILENAME (1<<0)
 +/* specified content is a file name */
 +#define CURL_HTTPPOST_READFILE (1<<1)
 +/* name is only stored pointer do not free in formfree */
 +#define CURL_HTTPPOST_PTRNAME (1<<2)
 +/* contents is only stored pointer do not free in formfree */
 +#define CURL_HTTPPOST_PTRCONTENTS (1<<3)
 +/* upload file from buffer */
 +#define CURL_HTTPPOST_BUFFER (1<<4)
 +/* upload file from pointer contents */
 +#define CURL_HTTPPOST_PTRBUFFER (1<<5)
 +/* upload file contents by using the regular read callback to get the data and
 +   pass the given pointer as custom pointer */
 +#define CURL_HTTPPOST_CALLBACK (1<<6)
 +/* use size in 'contentlen', added in 7.46.0 */
 +#define CURL_HTTPPOST_LARGE (1<<7)
 +
 +  char *showfilename;               /* The file name to show. If not set, the
 +                                       actual file name will be used (if this
 +                                       is a file part) */
 +  void *userp;                      /* custom pointer used for
 +                                       HTTPPOST_CALLBACK posts */
 +  curl_off_t contentlen;            /* alternative length of contents
 +                                       field. Used if CURL_HTTPPOST_LARGE is
 +                                       set. Added in 7.46.0 */
 +};
 +
 +/* This is the CURLOPT_PROGRESSFUNCTION callback proto. It is now considered
 +   deprecated but was the only choice up until 7.31.0 */
 +typedef int (*curl_progress_callback)(void *clientp,
 +                                      double dltotal,
 +                                      double dlnow,
 +                                      double ultotal,
 +                                      double ulnow);
 +
 +/* This is the CURLOPT_XFERINFOFUNCTION callback proto. It was introduced in
 +   7.32.0, it avoids floating point and provides more detailed information. */
 +typedef int (*curl_xferinfo_callback)(void *clientp,
 +                                      curl_off_t dltotal,
 +                                      curl_off_t dlnow,
 +                                      curl_off_t ultotal,
 +                                      curl_off_t ulnow);
 +
 +#ifndef CURL_MAX_READ_SIZE
 +  /* The maximum receive buffer size configurable via CURLOPT_BUFFERSIZE. */
 +#define CURL_MAX_READ_SIZE 524288
 +#endif
 +
 +#ifndef CURL_MAX_WRITE_SIZE
 +  /* Tests have proven that 20K is a very bad buffer size for uploads on
 +     Windows, while 16K for some odd reason performed a lot better.
 +     We do the ifndef check to allow this value to easier be changed at build
 +     time for those who feel adventurous. The practical minimum is about
 +     400 bytes since libcurl uses a buffer of this size as a scratch area
 +     (unrelated to network send operations). */
 +#define CURL_MAX_WRITE_SIZE 16384
 +#endif
 +
 +#ifndef CURL_MAX_HTTP_HEADER
 +/* The only reason to have a max limit for this is to avoid the risk of a bad
 +   server feeding libcurl with a never-ending header that will cause reallocs
 +   infinitely */
 +#define CURL_MAX_HTTP_HEADER (100*1024)
 +#endif
 +
 +/* This is a magic return code for the write callback that, when returned,
 +   will signal libcurl to pause receiving on the current transfer. */
 +#define CURL_WRITEFUNC_PAUSE 0x10000001
 +
 +typedef size_t (*curl_write_callback)(char *buffer,
 +                                      size_t size,
 +                                      size_t nitems,
 +                                      void *outstream);
 +
 +
 +
 +/* enumeration of file types */
 +typedef enum {
 +  CURLFILETYPE_FILE = 0,
 +  CURLFILETYPE_DIRECTORY,
 +  CURLFILETYPE_SYMLINK,
 +  CURLFILETYPE_DEVICE_BLOCK,
 +  CURLFILETYPE_DEVICE_CHAR,
 +  CURLFILETYPE_NAMEDPIPE,
 +  CURLFILETYPE_SOCKET,
 +  CURLFILETYPE_DOOR, /* is possible only on Sun Solaris now */
 +
 +  CURLFILETYPE_UNKNOWN /* should never occur */
 +} curlfiletype;
 +
 +#define CURLFINFOFLAG_KNOWN_FILENAME    (1<<0)
 +#define CURLFINFOFLAG_KNOWN_FILETYPE    (1<<1)
 +#define CURLFINFOFLAG_KNOWN_TIME        (1<<2)
 +#define CURLFINFOFLAG_KNOWN_PERM        (1<<3)
 +#define CURLFINFOFLAG_KNOWN_UID         (1<<4)
 +#define CURLFINFOFLAG_KNOWN_GID         (1<<5)
 +#define CURLFINFOFLAG_KNOWN_SIZE        (1<<6)
 +#define CURLFINFOFLAG_KNOWN_HLINKCOUNT  (1<<7)
 +
 +/* Content of this structure depends on information which is known and is
 +   achievable (e.g. by FTP LIST parsing). Please see the url_easy_setopt(3) man
 +   page for callbacks returning this structure -- some fields are mandatory,
 +   some others are optional. The FLAG field has special meaning. */
 +struct curl_fileinfo {
 +  char *filename;
 +  curlfiletype filetype;
 +  time_t time;
 +  unsigned int perm;
 +  int uid;
 +  int gid;
 +  curl_off_t size;
 +  long int hardlinks;
 +
 +  struct {
 +    /* If some of these fields is not NULL, it is a pointer to b_data. */
 +    char *time;
 +    char *perm;
 +    char *user;
 +    char *group;
 +    char *target; /* pointer to the target filename of a symlink */
 +  } strings;
 +
 +  unsigned int flags;
 +
 +  /* used internally */
 +  char *b_data;
 +  size_t b_size;
 +  size_t b_used;
 +};
 +
 +/* return codes for CURLOPT_CHUNK_BGN_FUNCTION */
 +#define CURL_CHUNK_BGN_FUNC_OK      0
 +#define CURL_CHUNK_BGN_FUNC_FAIL    1 /* tell the lib to end the task */
 +#define CURL_CHUNK_BGN_FUNC_SKIP    2 /* skip this chunk over */
 +
 +/* if splitting of data transfer is enabled, this callback is called before
 +   download of an individual chunk started. Note that parameter "remains" works
 +   only for FTP wildcard downloading (for now), otherwise is not used */
 +typedef long (*curl_chunk_bgn_callback)(const void *transfer_info,
 +                                        void *ptr,
 +                                        int remains);
 +
 +/* return codes for CURLOPT_CHUNK_END_FUNCTION */
 +#define CURL_CHUNK_END_FUNC_OK      0
 +#define CURL_CHUNK_END_FUNC_FAIL    1 /* tell the lib to end the task */
 +
 +/* If splitting of data transfer is enabled this callback is called after
 +   download of an individual chunk finished.
 +   Note! After this callback was set then it have to be called FOR ALL chunks.
 +   Even if downloading of this chunk was skipped in CHUNK_BGN_FUNC.
 +   This is the reason why we don't need "transfer_info" parameter in this
 +   callback and we are not interested in "remains" parameter too. */
 +typedef long (*curl_chunk_end_callback)(void *ptr);
 +
 +/* return codes for FNMATCHFUNCTION */
 +#define CURL_FNMATCHFUNC_MATCH    0 /* string corresponds to the pattern */
 +#define CURL_FNMATCHFUNC_NOMATCH  1 /* pattern doesn't match the string */
 +#define CURL_FNMATCHFUNC_FAIL     2 /* an error occurred */
 +
 +/* callback type for wildcard downloading pattern matching. If the
 +   string matches the pattern, return CURL_FNMATCHFUNC_MATCH value, etc. */
 +typedef int (*curl_fnmatch_callback)(void *ptr,
 +                                     const char *pattern,
 +                                     const char *string);
 +
 +/* These are the return codes for the seek callbacks */
 +#define CURL_SEEKFUNC_OK       0
 +#define CURL_SEEKFUNC_FAIL     1 /* fail the entire transfer */
 +#define CURL_SEEKFUNC_CANTSEEK 2 /* tell libcurl seeking can't be done, so
 +                                    libcurl might try other means instead */
 +typedef int (*curl_seek_callback)(void *instream,
 +                                  curl_off_t offset,
 +                                  int origin); /* 'whence' */
 +
 +/* This is a return code for the read callback that, when returned, will
 +   signal libcurl to immediately abort the current transfer. */
 +#define CURL_READFUNC_ABORT 0x10000000
 +/* This is a return code for the read callback that, when returned, will
 +   signal libcurl to pause sending data on the current transfer. */
 +#define CURL_READFUNC_PAUSE 0x10000001
 +
 +typedef size_t (*curl_read_callback)(char *buffer,
 +                                      size_t size,
 +                                      size_t nitems,
 +                                      void *instream);
 +
- typedef enum  {
++typedef enum {
 +  CURLSOCKTYPE_IPCXN,  /* socket created for a specific IP connection */
 +  CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
 +  CURLSOCKTYPE_LAST    /* never use */
 +} curlsocktype;
 +
 +/* The return code from the sockopt_callback can signal information back
 +   to libcurl: */
 +#define CURL_SOCKOPT_OK 0
 +#define CURL_SOCKOPT_ERROR 1 /* causes libcurl to abort and return
 +                                CURLE_ABORTED_BY_CALLBACK */
 +#define CURL_SOCKOPT_ALREADY_CONNECTED 2
 +
 +typedef int (*curl_sockopt_callback)(void *clientp,
 +                                     curl_socket_t curlfd,
 +                                     curlsocktype purpose);
 +
 +struct curl_sockaddr {
 +  int family;
 +  int socktype;
 +  int protocol;
 +  unsigned int addrlen; /* addrlen was a socklen_t type before 7.18.0 but it
 +                           turned really ugly and painful on the systems that
 +                           lack this type */
 +  struct sockaddr addr;
 +};
 +
 +typedef curl_socket_t
 +(*curl_opensocket_callback)(void *clientp,
 +                            curlsocktype purpose,
 +                            struct curl_sockaddr *address);
 +
 +typedef int
 +(*curl_closesocket_callback)(void *clientp, curl_socket_t item);
 +
 +typedef enum {
 +  CURLIOE_OK,            /* I/O operation successful */
 +  CURLIOE_UNKNOWNCMD,    /* command was unknown to callback */
 +  CURLIOE_FAILRESTART,   /* failed to restart the read */
 +  CURLIOE_LAST           /* never use */
 +} curlioerr;
 +
- typedef enum  {
++typedef enum {
 +  CURLIOCMD_NOP,         /* no operation */
 +  CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
 +  CURLIOCMD_LAST         /* never use */
 +} curliocmd;
 +
 +typedef curlioerr (*curl_ioctl_callback)(CURL *handle,
 +                                         int cmd,
 +                                         void *clientp);
 +
 +#ifndef CURL_DID_MEMORY_FUNC_TYPEDEFS
 +/*
 + * The following typedef's are signatures of malloc, free, realloc, strdup and
 + * calloc respectively.  Function pointers of these types can be passed to the
 + * curl_global_init_mem() function to set user defined memory management
 + * callback routines.
 + */
 +typedef void *(*curl_malloc_callback)(size_t size);
 +typedef void (*curl_free_callback)(void *ptr);
 +typedef void *(*curl_realloc_callback)(void *ptr, size_t size);
 +typedef char *(*curl_strdup_callback)(const char *str);
 +typedef void *(*curl_calloc_callback)(size_t nmemb, size_t size);
 +
 +#define CURL_DID_MEMORY_FUNC_TYPEDEFS
 +#endif
 +
 +/* the kind of data that is passed to information_callback*/
 +typedef enum {
 +  CURLINFO_TEXT = 0,
 +  CURLINFO_HEADER_IN,    /* 1 */
 +  CURLINFO_HEADER_OUT,   /* 2 */
 +  CURLINFO_DATA_IN,      /* 3 */
 +  CURLINFO_DATA_OUT,     /* 4 */
 +  CURLINFO_SSL_DATA_IN,  /* 5 */
 +  CURLINFO_SSL_DATA_OUT, /* 6 */
 +  CURLINFO_END
 +} curl_infotype;
 +
 +typedef int (*curl_debug_callback)
 +       (CURL *handle,      /* the handle/transfer this concerns */
 +        curl_infotype type, /* what kind of data */
 +        char *data,        /* points to the data */
 +        size_t size,       /* size of the data pointed to */
 +        void *userptr);    /* whatever the user please */
 +
 +/* All possible error codes from all sorts of curl functions. Future versions
 +   may return other values, stay prepared.
 +
 +   Always add new return codes last. Never *EVER* remove any. The return
 +   codes must remain the same!
 + */
 +
 +typedef enum {
 +  CURLE_OK = 0,
 +  CURLE_UNSUPPORTED_PROTOCOL,    /* 1 */
 +  CURLE_FAILED_INIT,             /* 2 */
 +  CURLE_URL_MALFORMAT,           /* 3 */
 +  CURLE_NOT_BUILT_IN,            /* 4 - [was obsoleted in August 2007 for
 +                                    7.17.0, reused in April 2011 for 7.21.5] */
 +  CURLE_COULDNT_RESOLVE_PROXY,   /* 5 */
 +  CURLE_COULDNT_RESOLVE_HOST,    /* 6 */
 +  CURLE_COULDNT_CONNECT,         /* 7 */
 +  CURLE_WEIRD_SERVER_REPLY,      /* 8 */
 +  CURLE_REMOTE_ACCESS_DENIED,    /* 9 a service was denied by the server
 +                                    due to lack of access - when login fails
 +                                    this is not returned. */
 +  CURLE_FTP_ACCEPT_FAILED,       /* 10 - [was obsoleted in April 2006 for
 +                                    7.15.4, reused in Dec 2011 for 7.24.0]*/
 +  CURLE_FTP_WEIRD_PASS_REPLY,    /* 11 */
 +  CURLE_FTP_ACCEPT_TIMEOUT,      /* 12 - timeout occurred accepting server
 +                                    [was obsoleted in August 2007 for 7.17.0,
 +                                    reused in Dec 2011 for 7.24.0]*/
 +  CURLE_FTP_WEIRD_PASV_REPLY,    /* 13 */
 +  CURLE_FTP_WEIRD_227_FORMAT,    /* 14 */
 +  CURLE_FTP_CANT_GET_HOST,       /* 15 */
 +  CURLE_HTTP2,                   /* 16 - A problem in the http2 framing layer.
 +                                    [was obsoleted in August 2007 for 7.17.0,
 +                                    reused in July 2014 for 7.38.0] */
 +  CURLE_FTP_COULDNT_SET_TYPE,    /* 17 */
 +  CURLE_PARTIAL_FILE,            /* 18 */
 +  CURLE_FTP_COULDNT_RETR_FILE,   /* 19 */
 +  CURLE_OBSOLETE20,              /* 20 - NOT USED */
 +  CURLE_QUOTE_ERROR,             /* 21 - quote command failure */
 +  CURLE_HTTP_RETURNED_ERROR,     /* 22 */
 +  CURLE_WRITE_ERROR,             /* 23 */
 +  CURLE_OBSOLETE24,              /* 24 - NOT USED */
 +  CURLE_UPLOAD_FAILED,           /* 25 - failed upload "command" */
 +  CURLE_READ_ERROR,              /* 26 - couldn't open/read from file */
 +  CURLE_OUT_OF_MEMORY,           /* 27 */
 +  /* Note: CURLE_OUT_OF_MEMORY may sometimes indicate a conversion error
 +           instead of a memory allocation error if CURL_DOES_CONVERSIONS
 +           is defined
 +  */
 +  CURLE_OPERATION_TIMEDOUT,      /* 28 - the timeout time was reached */
 +  CURLE_OBSOLETE29,              /* 29 - NOT USED */
 +  CURLE_FTP_PORT_FAILED,         /* 30 - FTP PORT operation failed */
 +  CURLE_FTP_COULDNT_USE_REST,    /* 31 - the REST command failed */
 +  CURLE_OBSOLETE32,              /* 32 - NOT USED */
 +  CURLE_RANGE_ERROR,             /* 33 - RANGE "command" didn't work */
 +  CURLE_HTTP_POST_ERROR,         /* 34 */
 +  CURLE_SSL_CONNECT_ERROR,       /* 35 - wrong when connecting with SSL */
 +  CURLE_BAD_DOWNLOAD_RESUME,     /* 36 - couldn't resume download */
 +  CURLE_FILE_COULDNT_READ_FILE,  /* 37 */
 +  CURLE_LDAP_CANNOT_BIND,        /* 38 */
 +  CURLE_LDAP_SEARCH_FAILED,      /* 39 */
 +  CURLE_OBSOLETE40,              /* 40 - NOT USED */
 +  CURLE_FUNCTION_NOT_FOUND,      /* 41 - NOT USED starting with 7.53.0 */
 +  CURLE_ABORTED_BY_CALLBACK,     /* 42 */
 +  CURLE_BAD_FUNCTION_ARGUMENT,   /* 43 */
 +  CURLE_OBSOLETE44,              /* 44 - NOT USED */
 +  CURLE_INTERFACE_FAILED,        /* 45 - CURLOPT_INTERFACE failed */
 +  CURLE_OBSOLETE46,              /* 46 - NOT USED */
 +  CURLE_TOO_MANY_REDIRECTS,      /* 47 - catch endless re-direct loops */
 +  CURLE_UNKNOWN_OPTION,          /* 48 - User specified an unknown option */
 +  CURLE_TELNET_OPTION_SYNTAX,    /* 49 - Malformed telnet option */
 +  CURLE_OBSOLETE50,              /* 50 - NOT USED */
 +  CURLE_PEER_FAILED_VERIFICATION, /* 51 - peer's certificate or fingerprint
 +                                     wasn't verified fine */
 +  CURLE_GOT_NOTHING,             /* 52 - when this is a specific error */
 +  CURLE_SSL_ENGINE_NOTFOUND,     /* 53 - SSL crypto engine not found */
 +  CURLE_SSL_ENGINE_SETFAILED,    /* 54 - can not set SSL crypto engine as
 +                                    default */
 +  CURLE_SEND_ERROR,              /* 55 - failed sending network data */
 +  CURLE_RECV_ERROR,              /* 56 - failure in receiving network data */
 +  CURLE_OBSOLETE57,              /* 57 - NOT IN USE */
 +  CURLE_SSL_CERTPROBLEM,         /* 58 - problem with the local certificate */
 +  CURLE_SSL_CIPHER,              /* 59 - couldn't use specified cipher */
 +  CURLE_SSL_CACERT,              /* 60 - problem with the CA cert (path?) */
 +  CURLE_BAD_CONTENT_ENCODING,    /* 61 - Unrecognized/bad encoding */
 +  CURLE_LDAP_INVALID_URL,        /* 62 - Invalid LDAP URL */
 +  CURLE_FILESIZE_EXCEEDED,       /* 63 - Maximum file size exceeded */
 +  CURLE_USE_SSL_FAILED,          /* 64 - Requested FTP SSL level failed */
 +  CURLE_SEND_FAIL_REWIND,        /* 65 - Sending the data requires a rewind
 +                                    that failed */
 +  CURLE_SSL_ENGINE_INITFAILED,   /* 66 - failed to initialise ENGINE */
 +  CURLE_LOGIN_DENIED,            /* 67 - user, password or similar was not
 +                                    accepted and we failed to login */
 +  CURLE_TFTP_NOTFOUND,           /* 68 - file not found on server */
 +  CURLE_TFTP_PERM,               /* 69 - permission problem on server */
 +  CURLE_REMOTE_DISK_FULL,        /* 70 - out of disk space on server */
 +  CURLE_TFTP_ILLEGAL,            /* 71 - Illegal TFTP operation */
 +  CURLE_TFTP_UNKNOWNID,          /* 72 - Unknown transfer ID */
 +  CURLE_REMOTE_FILE_EXISTS,      /* 73 - File already exists */
 +  CURLE_TFTP_NOSUCHUSER,         /* 74 - No such user */
 +  CURLE_CONV_FAILED,             /* 75 - conversion failed */
 +  CURLE_CONV_REQD,               /* 76 - caller must register conversion
 +                                    callbacks using curl_easy_setopt options
 +                                    CURLOPT_CONV_FROM_NETWORK_FUNCTION,
 +                                    CURLOPT_CONV_TO_NETWORK_FUNCTION, and
 +                                    CURLOPT_CONV_FROM_UTF8_FUNCTION */
 +  CURLE_SSL_CACERT_BADFILE,      /* 77 - could not load CACERT file, missing
 +                                    or wrong format */
 +  CURLE_REMOTE_FILE_NOT_FOUND,   /* 78 - remote file not found */
 +  CURLE_SSH,                     /* 79 - error from the SSH layer, somewhat
 +                                    generic so the error message will be of
 +                                    interest when this has happened */
 +
 +  CURLE_SSL_SHUTDOWN_FAILED,     /* 80 - Failed to shut down the SSL
 +                                    connection */
 +  CURLE_AGAIN,                   /* 81 - socket is not ready for send/recv,
 +                                    wait till it's ready and try again (Added
 +                                    in 7.18.2) */
 +  CURLE_SSL_CRL_BADFILE,         /* 82 - could not load CRL file, missing or
 +                                    wrong format (Added in 7.19.0) */
 +  CURLE_SSL_ISSUER_ERROR,        /* 83 - Issuer check failed.  (Added in
 +                                    7.19.0) */
 +  CURLE_FTP_PRET_FAILED,         /* 84 - a PRET command failed */
 +  CURLE_RTSP_CSEQ_ERROR,         /* 85 - mismatch of RTSP CSeq numbers */
 +  CURLE_RTSP_SESSION_ERROR,      /* 86 - mismatch of RTSP Session Ids */
 +  CURLE_FTP_BAD_FILE_LIST,       /* 87 - unable to parse FTP file list */
 +  CURLE_CHUNK_FAILED,            /* 88 - chunk callback reported error */
 +  CURLE_NO_CONNECTION_AVAILABLE, /* 89 - No connection available, the
 +                                    session will be queued */
 +  CURLE_SSL_PINNEDPUBKEYNOTMATCH, /* 90 - specified pinned public key did not
 +                                     match */
 +  CURLE_SSL_INVALIDCERTSTATUS,   /* 91 - invalid certificate status */
 +  CURLE_HTTP2_STREAM,            /* 92 - stream error in HTTP/2 framing layer
 +                                    */
 +  CURL_LAST /* never use! */
 +} CURLcode;
 +
 +#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
 +                          the obsolete stuff removed! */
 +
 +/* Previously obsolete error code re-used in 7.38.0 */
 +#define CURLE_OBSOLETE16 CURLE_HTTP2
 +
 +/* Previously obsolete error codes re-used in 7.24.0 */
 +#define CURLE_OBSOLETE10 CURLE_FTP_ACCEPT_FAILED
 +#define CURLE_OBSOLETE12 CURLE_FTP_ACCEPT_TIMEOUT
 +
 +/*  compatibility with older names */
 +#define CURLOPT_ENCODING CURLOPT_ACCEPT_ENCODING
 +#define CURLE_FTP_WEIRD_SERVER_REPLY CURLE_WEIRD_SERVER_REPLY
 +
 +/* The following were added in 7.21.5, April 2011 */
 +#define CURLE_UNKNOWN_TELNET_OPTION CURLE_UNKNOWN_OPTION
 +
 +/* The following were added in 7.17.1 */
 +/* These are scheduled to disappear by 2009 */
 +#define CURLE_SSL_PEER_CERTIFICATE CURLE_PEER_FAILED_VERIFICATION
 +
 +/* The following were added in 7.17.0 */
 +/* These are scheduled to disappear by 2009 */
 +#define CURLE_OBSOLETE CURLE_OBSOLETE50 /* no one should be using this! */
 +#define CURLE_BAD_PASSWORD_ENTERED CURLE_OBSOLETE46
 +#define CURLE_BAD_CALLING_ORDER CURLE_OBSOLETE44
 +#define CURLE_FTP_USER_PASSWORD_INCORRECT CURLE_OBSOLETE10
 +#define CURLE_FTP_CANT_RECONNECT CURLE_OBSOLETE16
 +#define CURLE_FTP_COULDNT_GET_SIZE CURLE_OBSOLETE32
 +#define CURLE_FTP_COULDNT_SET_ASCII CURLE_OBSOLETE29
 +#define CURLE_FTP_WEIRD_USER_REPLY CURLE_OBSOLETE12
 +#define CURLE_FTP_WRITE_ERROR CURLE_OBSOLETE20
 +#define CURLE_LIBRARY_NOT_FOUND CURLE_OBSOLETE40
 +#define CURLE_MALFORMAT_USER CURLE_OBSOLETE24
 +#define CURLE_SHARE_IN_USE CURLE_OBSOLETE57
 +#define CURLE_URL_MALFORMAT_USER CURLE_NOT_BUILT_IN
 +
 +#define CURLE_FTP_ACCESS_DENIED CURLE_REMOTE_ACCESS_DENIED
 +#define CURLE_FTP_COULDNT_SET_BINARY CURLE_FTP_COULDNT_SET_TYPE
 +#define CURLE_FTP_QUOTE_ERROR CURLE_QUOTE_ERROR
 +#define CURLE_TFTP_DISKFULL CURLE_REMOTE_DISK_FULL
 +#define CURLE_TFTP_EXISTS CURLE_REMOTE_FILE_EXISTS
 +#define CURLE_HTTP_RANGE_ERROR CURLE_RANGE_ERROR
 +#define CURLE_FTP_SSL_FAILED CURLE_USE_SSL_FAILED
 +
 +/* The following were added earlier */
 +
 +#define CURLE_OPERATION_TIMEOUTED CURLE_OPERATION_TIMEDOUT
 +
 +#define CURLE_HTTP_NOT_FOUND CURLE_HTTP_RETURNED_ERROR
 +#define CURLE_HTTP_PORT_FAILED CURLE_INTERFACE_FAILED
 +#define CURLE_FTP_COULDNT_STOR_FILE CURLE_UPLOAD_FAILED
 +
 +#define CURLE_FTP_PARTIAL_FILE CURLE_PARTIAL_FILE
 +#define CURLE_FTP_BAD_DOWNLOAD_RESUME CURLE_BAD_DOWNLOAD_RESUME
 +
 +/* This was the error code 50 in 7.7.3 and a few earlier versions, this
 +   is no longer used by libcurl but is instead #defined here only to not
 +   make programs break */
 +#define CURLE_ALREADY_COMPLETE 99999
 +
 +/* Provide defines for really old option names */
 +#define CURLOPT_FILE CURLOPT_WRITEDATA /* name changed in 7.9.7 */
 +#define CURLOPT_INFILE CURLOPT_READDATA /* name changed in 7.9.7 */
 +#define CURLOPT_WRITEHEADER CURLOPT_HEADERDATA
 +
 +/* Since long deprecated options with no code in the lib that does anything
 +   with them. */
 +#define CURLOPT_WRITEINFO CURLOPT_OBSOLETE40
 +#define CURLOPT_CLOSEPOLICY CURLOPT_OBSOLETE72
 +
 +#endif /*!CURL_NO_OLDIES*/
 +
 +/* This prototype applies to all conversion callbacks */
 +typedef CURLcode (*curl_conv_callback)(char *buffer, size_t length);
 +
 +typedef CURLcode (*curl_ssl_ctx_callback)(CURL *curl,    /* easy handle */
 +                                          void *ssl_ctx, /* actually an
 +                                                            OpenSSL SSL_CTX */
 +                                          void *userptr);
 +
 +typedef enum {
 +  CURLPROXY_HTTP = 0,   /* added in 7.10, new in 7.19.4 default is to use
 +                           CONNECT HTTP/1.1 */
 +  CURLPROXY_HTTP_1_0 = 1,   /* added in 7.19.4, force to use CONNECT
 +                               HTTP/1.0  */
 +  CURLPROXY_HTTPS = 2, /* added in 7.52.0 */
 +  CURLPROXY_SOCKS4 = 4, /* support added in 7.15.2, enum existed already
 +                           in 7.10 */
 +  CURLPROXY_SOCKS5 = 5, /* added in 7.10 */
 +  CURLPROXY_SOCKS4A = 6, /* added in 7.18.0 */
 +  CURLPROXY_SOCKS5_HOSTNAME = 7 /* Use the SOCKS5 protocol but pass along the
 +                                   host name rather than the IP address. added
 +                                   in 7.18.0 */
 +} curl_proxytype;  /* this enum was added in 7.10 */
 +
 +/*
 + * Bitmasks for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH options:
 + *
 + * CURLAUTH_NONE         - No HTTP authentication
 + * CURLAUTH_BASIC        - HTTP Basic authentication (default)
 + * CURLAUTH_DIGEST       - HTTP Digest authentication
 + * CURLAUTH_NEGOTIATE    - HTTP Negotiate (SPNEGO) authentication
 + * CURLAUTH_GSSNEGOTIATE - Alias for CURLAUTH_NEGOTIATE (deprecated)
 + * CURLAUTH_NTLM         - HTTP NTLM authentication
 + * CURLAUTH_DIGEST_IE    - HTTP Digest authentication with IE flavour
 + * CURLAUTH_NTLM_WB      - HTTP NTLM authentication delegated to winbind helper
 + * CURLAUTH_ONLY         - Use together with a single other type to force no
 + *                         authentication or just that single type
 + * CURLAUTH_ANY          - All fine types set
 + * CURLAUTH_ANYSAFE      - All fine types except Basic
 + */
 +
 +#define CURLAUTH_NONE         ((unsigned long)0)
 +#define CURLAUTH_BASIC        (((unsigned long)1)<<0)
 +#define CURLAUTH_DIGEST       (((unsigned long)1)<<1)
 +#define CURLAUTH_NEGOTIATE    (((unsigned long)1)<<2)
 +/* Deprecated since the advent of CURLAUTH_NEGOTIATE */
 +#define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
++/* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
++#define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
 +#define CURLAUTH_NTLM         (((unsigned long)1)<<3)
 +#define CURLAUTH_DIGEST_IE    (((unsigned long)1)<<4)
 +#define CURLAUTH_NTLM_WB      (((unsigned long)1)<<5)
 +#define CURLAUTH_ONLY         (((unsigned long)1)<<31)
 +#define CURLAUTH_ANY          (~CURLAUTH_DIGEST_IE)
 +#define CURLAUTH_ANYSAFE      (~(CURLAUTH_BASIC|CURLAUTH_DIGEST_IE))
 +
 +#define CURLSSH_AUTH_ANY       ~0     /* all types supported by the server */
 +#define CURLSSH_AUTH_NONE      0      /* none allowed, silly but complete */
 +#define CURLSSH_AUTH_PUBLICKEY (1<<0) /* public/private key files */
 +#define CURLSSH_AUTH_PASSWORD  (1<<1) /* password */
 +#define CURLSSH_AUTH_HOST      (1<<2) /* host key files */
 +#define CURLSSH_AUTH_KEYBOARD  (1<<3) /* keyboard interactive */
 +#define CURLSSH_AUTH_AGENT     (1<<4) /* agent (ssh-agent, pageant...) */
 +#define CURLSSH_AUTH_DEFAULT CURLSSH_AUTH_ANY
 +
 +#define CURLGSSAPI_DELEGATION_NONE        0      /* no delegation (default) */
 +#define CURLGSSAPI_DELEGATION_POLICY_FLAG (1<<0) /* if permitted by policy */
 +#define CURLGSSAPI_DELEGATION_FLAG        (1<<1) /* delegate always */
 +
 +#define CURL_ERROR_SIZE 256
 +
 +enum curl_khtype {
 +  CURLKHTYPE_UNKNOWN,
 +  CURLKHTYPE_RSA1,
 +  CURLKHTYPE_RSA,
 +  CURLKHTYPE_DSS
 +};
 +
 +struct curl_khkey {
 +  const char *key; /* points to a zero-terminated string encoded with base64
 +                      if len is zero, otherwise to the "raw" data */
 +  size_t len;
 +  enum curl_khtype keytype;
 +};
 +
 +/* this is the set of return values expected from the curl_sshkeycallback
 +   callback */
 +enum curl_khstat {
 +  CURLKHSTAT_FINE_ADD_TO_FILE,
 +  CURLKHSTAT_FINE,
 +  CURLKHSTAT_REJECT, /* reject the connection, return an error */
 +  CURLKHSTAT_DEFER,  /* do not accept it, but we can't answer right now so
 +                        this causes a CURLE_DEFER error but otherwise the
 +                        connection will be left intact etc */
 +  CURLKHSTAT_LAST    /* not for use, only a marker for last-in-list */
 +};
 +
 +/* this is the set of status codes pass in to the callback */
 +enum curl_khmatch {
 +  CURLKHMATCH_OK,       /* match */
 +  CURLKHMATCH_MISMATCH, /* host found, key mismatch! */
 +  CURLKHMATCH_MISSING,  /* no matching host/key found */
 +  CURLKHMATCH_LAST      /* not for use, only a marker for last-in-list */
 +};
 +
 +typedef int
 +  (*curl_sshkeycallback) (CURL *easy,     /* easy handle */
 +                          const struct curl_khkey *knownkey, /* known */
 +                          const struct curl_khkey *foundkey, /* found */
 +                          enum curl_khmatch, /* libcurl's view on the keys */
 +                          void *clientp); /* custom pointer passed from app */
 +
 +/* parameter for the CURLOPT_USE_SSL option */
 +typedef enum {
 +  CURLUSESSL_NONE,    /* do not attempt to use SSL */
 +  CURLUSESSL_TRY,     /* try using SSL, proceed anyway otherwise */
 +  CURLUSESSL_CONTROL, /* SSL for the control connection or fail */
 +  CURLUSESSL_ALL,     /* SSL for all communication or fail */
 +  CURLUSESSL_LAST     /* not an option, never use */
 +} curl_usessl;
 +
 +/* Definition of bits for the CURLOPT_SSL_OPTIONS argument: */
 +
 +/* - ALLOW_BEAST tells libcurl to allow the BEAST SSL vulnerability in the
 +   name of improving interoperability with older servers. Some SSL libraries
 +   have introduced work-arounds for this flaw but those work-arounds sometimes
 +   make the SSL communication fail. To regain functionality with those broken
 +   servers, a user can this way allow the vulnerability back. */
 +#define CURLSSLOPT_ALLOW_BEAST (1<<0)
 +
 +/* - NO_REVOKE tells libcurl to disable certificate revocation checks for those
 +   SSL backends where such behavior is present. */
 +#define CURLSSLOPT_NO_REVOKE (1<<1)
 +
 +#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
 +                          the obsolete stuff removed! */
 +
 +/* Backwards compatibility with older names */
 +/* These are scheduled to disappear by 2009 */
 +
 +#define CURLFTPSSL_NONE CURLUSESSL_NONE
 +#define CURLFTPSSL_TRY CURLUSESSL_TRY
 +#define CURLFTPSSL_CONTROL CURLUSESSL_CONTROL
 +#define CURLFTPSSL_ALL CURLUSESSL_ALL
 +#define CURLFTPSSL_LAST CURLUSESSL_LAST
 +#define curl_ftpssl curl_usessl
 +#endif /*!CURL_NO_OLDIES*/
 +
 +/* parameter for the CURLOPT_FTP_SSL_CCC option */
 +typedef enum {
 +  CURLFTPSSL_CCC_NONE,    /* do not send CCC */
 +  CURLFTPSSL_CCC_PASSIVE, /* Let the server initiate the shutdown */
 +  CURLFTPSSL_CCC_ACTIVE,  /* Initiate the shutdown */
 +  CURLFTPSSL_CCC_LAST     /* not an option, never use */
 +} curl_ftpccc;
 +
 +/* parameter for the CURLOPT_FTPSSLAUTH option */
 +typedef enum {
 +  CURLFTPAUTH_DEFAULT, /* let libcurl decide */
 +  CURLFTPAUTH_SSL,     /* use "AUTH SSL" */
 +  CURLFTPAUTH_TLS,     /* use "AUTH TLS" */
 +  CURLFTPAUTH_LAST /* not an option, never use */
 +} curl_ftpauth;
 +
 +/* parameter for the CURLOPT_FTP_CREATE_MISSING_DIRS option */
 +typedef enum {
 +  CURLFTP_CREATE_DIR_NONE,  /* do NOT create missing dirs! */
 +  CURLFTP_CREATE_DIR,       /* (FTP/SFTP) if CWD fails, try MKD and then CWD
 +                               again if MKD succeeded, for SFTP this does
 +                               similar magic */
 +  CURLFTP_CREATE_DIR_RETRY, /* (FTP only) if CWD fails, try MKD and then CWD
 +                               again even if MKD failed! */
 +  CURLFTP_CREATE_DIR_LAST   /* not an option, never use */
 +} curl_ftpcreatedir;
 +
 +/* parameter for the CURLOPT_FTP_FILEMETHOD option */
 +typedef enum {
 +  CURLFTPMETHOD_DEFAULT,   /* let libcurl pick */
 +  CURLFTPMETHOD_MULTICWD,  /* single CWD operation for each path part */
 +  CURLFTPMETHOD_NOCWD,     /* no CWD at all */
 +  CURLFTPMETHOD_SINGLECWD, /* one CWD to full dir, then work on file */
 +  CURLFTPMETHOD_LAST       /* not an option, never use */
 +} curl_ftpmethod;
 +
 +/* bitmask defines for CURLOPT_HEADEROPT */
 +#define CURLHEADER_UNIFIED  0
 +#define CURLHEADER_SEPARATE (1<<0)
 +
 +/* CURLPROTO_ defines are for the CURLOPT_*PROTOCOLS options */
 +#define CURLPROTO_HTTP   (1<<0)
 +#define CURLPROTO_HTTPS  (1<<1)
 +#define CURLPROTO_FTP    (1<<2)
 +#define CURLPROTO_FTPS   (1<<3)
 +#define CURLPROTO_SCP    (1<<4)
 +#define CURLPROTO_SFTP   (1<<5)
 +#define CURLPROTO_TELNET (1<<6)
 +#define CURLPROTO_LDAP   (1<<7)
 +#define CURLPROTO_LDAPS  (1<<8)
 +#define CURLPROTO_DICT   (1<<9)
 +#define CURLPROTO_FILE   (1<<10)
 +#define CURLPROTO_TFTP   (1<<11)
 +#define CURLPROTO_IMAP   (1<<12)
 +#define CURLPROTO_IMAPS  (1<<13)
 +#define CURLPROTO_POP3   (1<<14)
 +#define CURLPROTO_POP3S  (1<<15)
 +#define CURLPROTO_SMTP   (1<<16)
 +#define CURLPROTO_SMTPS  (1<<17)
 +#define CURLPROTO_RTSP   (1<<18)
 +#define CURLPROTO_RTMP   (1<<19)
 +#define CURLPROTO_RTMPT  (1<<20)
 +#define CURLPROTO_RTMPE  (1<<21)
 +#define CURLPROTO_RTMPTE (1<<22)
 +#define CURLPROTO_RTMPS  (1<<23)
 +#define CURLPROTO_RTMPTS (1<<24)
 +#define CURLPROTO_GOPHER (1<<25)
 +#define CURLPROTO_SMB    (1<<26)
 +#define CURLPROTO_SMBS   (1<<27)
 +#define CURLPROTO_ALL    (~0) /* enable everything */
 +
 +/* long may be 32 or 64 bits, but we should never depend on anything else
 +   but 32 */
 +#define CURLOPTTYPE_LONG          0
 +#define CURLOPTTYPE_OBJECTPOINT   10000
 +#define CURLOPTTYPE_STRINGPOINT   10000
 +#define CURLOPTTYPE_FUNCTIONPOINT 20000
 +#define CURLOPTTYPE_OFF_T         30000
 +
 +/* *STRINGPOINT is an alias for OBJECTPOINT to allow tools to extract the
 +   string options from the header file */
 +
 +/* name is uppercase CURLOPT_<name>,
 +   type is one of the defined CURLOPTTYPE_<type>
 +   number is unique identifier */
 +#ifdef CINIT
 +#undef CINIT
 +#endif
 +
 +#ifdef CURL_ISOCPP
 +#define CINIT(na,t,nu) CURLOPT_ ## na = CURLOPTTYPE_ ## t + nu
 +#else
 +/* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
 +#define LONG          CURLOPTTYPE_LONG
 +#define OBJECTPOINT   CURLOPTTYPE_OBJECTPOINT
 +#define STRINGPOINT   CURLOPTTYPE_OBJECTPOINT
 +#define FUNCTIONPOINT CURLOPTTYPE_FUNCTIONPOINT
 +#define OFF_T         CURLOPTTYPE_OFF_T
 +#define CINIT(name,type,number) CURLOPT_/**/name = type + number
 +#endif
 +
 +/*
 + * This macro-mania below setups the CURLOPT_[what] enum, to be used with
 + * curl_easy_setopt(). The first argument in the CINIT() macro is the [what]
 + * word.
 + */
 +
 +typedef enum {
 +  /* This is the FILE * or void * the regular output should be written to. */
 +  CINIT(WRITEDATA, OBJECTPOINT, 1),
 +
 +  /* The full URL to get/put */
 +  CINIT(URL, STRINGPOINT, 2),
 +
 +  /* Port number to connect to, if other than default. */
 +  CINIT(PORT, LONG, 3),
 +
 +  /* Name of proxy to use. */
 +  CINIT(PROXY, STRINGPOINT, 4),
 +
 +  /* "user:password;options" to use when fetching. */
 +  CINIT(USERPWD, STRINGPOINT, 5),
 +
 +  /* "user:password" to use with proxy. */
 +  CINIT(PROXYUSERPWD, STRINGPOINT, 6),
 +
 +  /* Range to get, specified as an ASCII string. */
 +  CINIT(RANGE, STRINGPOINT, 7),
 +
 +  /* not used */
 +
 +  /* Specified file stream to upload from (use as input): */
 +  CINIT(READDATA, OBJECTPOINT, 9),
 +
 +  /* Buffer to receive error messages in, must be at least CURL_ERROR_SIZE
 +   * bytes big. If this is not used, error messages go to stderr instead: */
 +  CINIT(ERRORBUFFER, OBJECTPOINT, 10),
 +
 +  /* Function that will be called to store the output (instead of fwrite). The
 +   * parameters will use fwrite() syntax, make sure to follow them. */
 +  CINIT(WRITEFUNCTION, FUNCTIONPOINT, 11),
 +
 +  /* Function that will be called to read the input (instead of fread). The
 +   * parameters will use fread() syntax, make sure to follow them. */
 +  CINIT(READFUNCTION, FUNCTIONPOINT, 12),
 +
 +  /* Time-out the read operation after this amount of seconds */
 +  CINIT(TIMEOUT, LONG, 13),
 +
 +  /* If the CURLOPT_INFILE is used, this can be used to inform libcurl about
 +   * how large the file being sent really is. That allows better error
 +   * checking and better verifies that the upload was successful. -1 means
 +   * unknown size.
 +   *
 +   * For large file support, there is also a _LARGE version of the key
 +   * which takes an off_t type, allowing platforms with larger off_t
 +   * sizes to handle larger files.  See below for INFILESIZE_LARGE.
 +   */
 +  CINIT(INFILESIZE, LONG, 14),
 +
 +  /* POST static input fields. */
 +  CINIT(POSTFIELDS, OBJECTPOINT, 15),
 +
 +  /* Set the referrer page (needed by some CGIs) */
 +  CINIT(REFERER, STRINGPOINT, 16),
 +
 +  /* Set the FTP PORT string (interface name, named or numerical IP address)
 +     Use i.e '-' to use default address. */
 +  CINIT(FTPPORT, STRINGPOINT, 17),
 +
 +  /* Set the User-Agent string (examined by some CGIs) */
 +  CINIT(USERAGENT, STRINGPOINT, 18),
 +
 +  /* If the download receives less than "low speed limit" bytes/second
 +   * during "low speed time" seconds, the operations is aborted.
 +   * You could i.e if you have a pretty high speed connection, abort if
 +   * it is less than 2000 bytes/sec during 20 seconds.
 +   */
 +
 +  /* Set the "low speed limit" */
 +  CINIT(LOW_SPEED_LIMIT, LONG, 19),
 +
 +  /* Set the "low speed time" */
 +  CINIT(LOW_SPEED_TIME, LONG, 20),
 +
 +  /* Set the continuation offset.
 +   *
 +   * Note there is also a _LARGE version of this key which uses
 +   * off_t types, allowing for large file offsets on platforms which
 +   * use larger-than-32-bit off_t's.  Look below for RESUME_FROM_LARGE.
 +   */
 +  CINIT(RESUME_FROM, LONG, 21),
 +
 +  /* Set cookie in request: */
 +  CINIT(COOKIE, STRINGPOINT, 22),
 +
 +  /* This points to a linked list of headers, struct curl_slist kind. This
 +     list is also used for RTSP (in spite of its name) */
 +  CINIT(HTTPHEADER, OBJECTPOINT, 23),
 +
 +  /* This points to a linked list of post entries, struct curl_httppost */
 +  CINIT(HTTPPOST, OBJECTPOINT, 24),
 +
 +  /* name of the file keeping your private SSL-certificate */
 +  CINIT(SSLCERT, STRINGPOINT, 25),
 +
 +  /* password for the SSL or SSH private key */
 +  CINIT(KEYPASSWD, STRINGPOINT, 26),
 +
 +  /* send TYPE parameter? */
 +  CINIT(CRLF, LONG, 27),
 +
 +  /* send linked-list of QUOTE commands */
 +  CINIT(QUOTE, OBJECTPOINT, 28),
 +
 +  /* send FILE * or void * to store headers to, if you use a callback it
 +     is simply passed to the callback unmodified */
 +  CINIT(HEADERDATA, OBJECTPOINT, 29),
 +
 +  /* point to a file to read the initial cookies from, also enables
 +     "cookie awareness" */
 +  CINIT(COOKIEFILE, STRINGPOINT, 31),
 +
 +  /* What version to specifically try to use.
 +     See CURL_SSLVERSION defines below. */
 +  CINIT(SSLVERSION, LONG, 32),
 +
 +  /* What kind of HTTP time condition to use, see defines */
 +  CINIT(TIMECONDITION, LONG, 33),
 +
 +  /* Time to use with the above condition. Specified in number of seconds
 +     since 1 Jan 1970 */
 +  CINIT(TIMEVALUE, LONG, 34),
 +
 +  /* 35 = OBSOLETE */
 +
 +  /* Custom request, for customizing the get command like
 +     HTTP: DELETE, TRACE and others
 +     FTP: to use a different list command
 +     */
 +  CINIT(CUSTOMREQUEST, STRINGPOINT, 36),
 +
 +  /* FILE handle to use instead of stderr */
 +  CINIT(STDERR, OBJECTPOINT, 37),
 +
 +  /* 38 is not used */
 +
 +  /* send linked-list of post-transfer QUOTE commands */
 +  CINIT(POSTQUOTE, OBJECTPOINT, 39),
 +
 +  CINIT(OBSOLETE40, OBJECTPOINT, 40), /* OBSOLETE, do not use! */
 +
 +  CINIT(VERBOSE, LONG, 41),      /* talk a lot */
 +  CINIT(HEADER, LONG, 42),       /* throw the header out too */
 +  CINIT(NOPROGRESS, LONG, 43),   /* shut off the progress meter */
 +  CINIT(NOBODY, LONG, 44),       /* use HEAD to get http document */
 +  CINIT(FAILONERROR, LONG, 45),  /* no output on http error codes >= 400 */
 +  CINIT(UPLOAD, LONG, 46),       /* this is an upload */
 +  CINIT(POST, LONG, 47),         /* HTTP POST method */
 +  CINIT(DIRLISTONLY, LONG, 48),  /* bare names when listing directories */
 +
 +  CINIT(APPEND, LONG, 50),       /* Append instead of overwrite on upload! */
 +
 +  /* Specify whether to read the user+password from the .netrc or the URL.
 +   * This must be one of the CURL_NETRC_* enums below. */
 +  CINIT(NETRC, LONG, 51),
 +
 +  CINIT(FOLLOWLOCATION, LONG, 52),  /* use Location: Luke! */
 +
 +  CINIT(TRANSFERTEXT, LONG, 53), /* transfer data in text/ASCII format */
 +  CINIT(PUT, LONG, 54),          /* HTTP PUT */
 +
 +  /* 55 = OBSOLETE */
 +
 +  /* DEPRECATED
 +   * Function that will be called instead of the internal progress display
 +   * function. This function should be defined as the curl_progress_callback
 +   * prototype defines. */
 +  CINIT(PROGRESSFUNCTION, FUNCTIONPOINT, 56),
 +
 +  /* Data passed to the CURLOPT_PROGRESSFUNCTION and CURLOPT_XFERINFOFUNCTION
 +     callbacks */
 +  CINIT(PROGRESSDATA, OBJECTPOINT, 57),
 +#define CURLOPT_XFERINFODATA CURLOPT_PROGRESSDATA
 +
 +  /* We want the referrer field set automatically when following locations */
 +  CINIT(AUTOREFERER, LONG, 58),
 +
 +  /* Port of the proxy, can be set in the proxy string as well with:
 +     "[host]:[port]" */
 +  CINIT(PROXYPORT, LONG, 59),
 +
 +  /* size of the POST input data, if strlen() is not good to use */
 +  CINIT(POSTFIELDSIZE, LONG, 60),
 +
 +  /* tunnel non-http operations through a HTTP proxy */
 +  CINIT(HTTPPROXYTUNNEL, LONG, 61),
 +
 +  /* Set the interface string to use as outgoing network interface */
 +  CINIT(INTERFACE, STRINGPOINT, 62),
 +
 +  /* Set the krb4/5 security level, this also enables krb4/5 awareness.  This
 +   * is a string, 'clear', 'safe', 'confidential' or 'private'.  If the string
 +   * is set but doesn't match one of these, 'private' will be used.  */
 +  CINIT(KRBLEVEL, STRINGPOINT, 63),
 +
 +  /* Set if we should verify the peer in ssl handshake, set 1 to verify. */
 +  CINIT(SSL_VERIFYPEER, LONG, 64),
 +
 +  /* The CApath or CAfile used to validate the peer certificate
 +     this option is used only if SSL_VERIFYPEER is true */
 +  CINIT(CAINFO, STRINGPOINT, 65),
 +
 +  /* 66 = OBSOLETE */
 +  /* 67 = OBSOLETE */
 +
 +  /* Maximum number of http redirects to follow */
 +  CINIT(MAXREDIRS, LONG, 68),
 +
 +  /* Pass a long set to 1 to get the date of the requested document (if
 +     possible)! Pass a zero to shut it off. */
 +  CINIT(FILETIME, LONG, 69),
 +
 +  /* This points to a linked list of telnet options */
 +  CINIT(TELNETOPTIONS, OBJECTPOINT, 70),
 +
 +  /* Max amount of cached alive connections */
 +  CINIT(MAXCONNECTS, LONG, 71),
 +
 +  CINIT(OBSOLETE72, LONG, 72), /* OBSOLETE, do not use! */
 +
 +  /* 73 = OBSOLETE */
 +
 +  /* Set to explicitly use a new connection for the upcoming transfer.
 +     Do not use this unless you're absolutely sure of this, as it makes the
 +     operation slower and is less friendly for the network. */
 +  CINIT(FRESH_CONNECT, LONG, 74),
 +
 +  /* Set to explicitly forbid the upcoming transfer's connection to be re-used
 +     when done. Do not use this unless you're absolutely sure of this, as it
 +     makes the operation slower and is less friendly for the network. */
 +  CINIT(FORBID_REUSE, LONG, 75),
 +
 +  /* Set to a file name that contains random data for libcurl to use to
 +     seed the random engine when doing SSL connects. */
 +  CINIT(RANDOM_FILE, STRINGPOINT, 76),
 +
 +  /* Set to the Entropy Gathering Daemon socket pathname */
 +  CINIT(EGDSOCKET, STRINGPOINT, 77),
 +
 +  /* Time-out connect operations after this amount of seconds, if connects are
 +     OK within this time, then fine... This only aborts the connect phase. */
 +  CINIT(CONNECTTIMEOUT, LONG, 78),
 +
 +  /* Function that will be called to store headers (instead of fwrite). The
 +   * parameters will use fwrite() syntax, make sure to follow them. */
 +  CINIT(HEADERFUNCTION, FUNCTIONPOINT, 79),
 +
 +  /* Set this to force the HTTP request to get back to GET. Only really usable
 +     if POST, PUT or a custom request have been used first.
 +   */
 +  CINIT(HTTPGET, LONG, 80),
 +
 +  /* Set if we should verify the Common name from the peer certificate in ssl
 +   * handshake, set 1 to check existence, 2 to ensure that it matches the
 +   * provided hostname. */
 +  CINIT(SSL_VERIFYHOST, LONG, 81),
 +
 +  /* Specify which file name to write all known cookies in after completed
 +     operation. Set file name to "-" (dash) to make it go to stdout. */
 +  CINIT(COOKIEJAR, STRINGPOINT, 82),
 +
 +  /* Specify which SSL ciphers to use */
 +  CINIT(SSL_CIPHER_LIST, STRINGPOINT, 83),
 +
 +  /* Specify which HTTP version to use! This must be set to one of the
 +     CURL_HTTP_VERSION* enums set below. */
 +  CINIT(HTTP_VERSION, LONG, 84),
 +
 +  /* Specifically switch on or off the FTP engine's use of the EPSV command. By
 +     default, that one will always be attempted before the more traditional
 +     PASV command. */
 +  CINIT(FTP_USE_EPSV, LONG, 85),
 +
 +  /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") */
 +  CINIT(SSLCERTTYPE, STRINGPOINT, 86),
 +
 +  /* name of the file keeping your private SSL-key */
 +  CINIT(SSLKEY, STRINGPOINT, 87),
 +
 +  /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") */
 +  CINIT(SSLKEYTYPE, STRINGPOINT, 88),
 +
 +  /* crypto engine for the SSL-sub system */
 +  CINIT(SSLENGINE, STRINGPOINT, 89),
 +
 +  /* set the crypto engine for the SSL-sub system as default
 +     the param has no meaning...
 +   */
 +  CINIT(SSLENGINE_DEFAULT, LONG, 90),
 +
 +  /* Non-zero value means to use the global dns cache */
 +  CINIT(DNS_USE_GLOBAL_CACHE, LONG, 91), /* DEPRECATED, do not use! */
 +
 +  /* DNS cache timeout */
 +  CINIT(DNS_CACHE_TIMEOUT, LONG, 92),
 +
 +  /* send linked-list of pre-transfer QUOTE commands */
 +  CINIT(PREQUOTE, OBJECTPOINT, 93),
 +
 +  /* set the debug function */
 +  CINIT(DEBUGFUNCTION, FUNCTIONPOINT, 94),
 +
 +  /* set the data for the debug function */
 +  CINIT(DEBUGDATA, OBJECTPOINT, 95),
 +
 +  /* mark this as start of a cookie session */
 +  CINIT(COOKIESESSION, LONG, 96),
 +
 +  /* The CApath directory used to validate the peer certificate
 +     this option is used only if SSL_VERIFYPEER is true */
 +  CINIT(CAPATH, STRINGPOINT, 97),
 +
 +  /* Instruct libcurl to use a smaller receive buffer */
 +  CINIT(BUFFERSIZE, LONG, 98),
 +
 +  /* Instruct libcurl to not use any signal/alarm handlers, even when using
 +     timeouts. This option is useful for multi-threaded applications.
 +     See libcurl-the-guide for more background information. */
 +  CINIT(NOSIGNAL, LONG, 99),
 +
 +  /* Provide a CURLShare for mutexing non-ts data */
 +  CINIT(SHARE, OBJECTPOINT, 100),
 +
 +  /* indicates type of proxy. accepted values are CURLPROXY_HTTP (default),
 +     CURLPROXY_HTTPS, CURLPROXY_SOCKS4, CURLPROXY_SOCKS4A and
 +     CURLPROXY_SOCKS5. */
 +  CINIT(PROXYTYPE, LONG, 101),
 +
 +  /* Set the Accept-Encoding string. Use this to tell a server you would like
 +     the response to be compressed. Before 7.21.6, this was known as
 +     CURLOPT_ENCODING */
 +  CINIT(ACCEPT_ENCODING, STRINGPOINT, 102),
 +
 +  /* Set pointer to private data */
 +  CINIT(PRIVATE, OBJECTPOINT, 103),
 +
 +  /* Set aliases for HTTP 200 in the HTTP Response header */
 +  CINIT(HTTP200ALIASES, OBJECTPOINT, 104),
 +
 +  /* Continue to send authentication (user+password) when following locations,
 +     even when hostname changed. This can potentially send off the name
 +     and password to whatever host the server decides. */
 +  CINIT(UNRESTRICTED_AUTH, LONG, 105),
 +
 +  /* Specifically switch on or off the FTP engine's use of the EPRT command (
 +     it also disables the LPRT attempt). By default, those ones will always be
 +     attempted before the good old traditional PORT command. */
 +  CINIT(FTP_USE_EPRT, LONG, 106),
 +
 +  /* Set this to a bitmask value to enable the particular authentications
 +     methods you like. Use this in combination with CURLOPT_USERPWD.
 +     Note that setting multiple bits may cause extra network round-trips. */
 +  CINIT(HTTPAUTH, LONG, 107),
 +
 +  /* Set the ssl context callback function, currently only for OpenSSL ssl_ctx
 +     in second argument. The function must be matching the
 +     curl_ssl_ctx_callback proto. */
 +  CINIT(SSL_CTX_FUNCTION, FUNCTIONPOINT, 108),
 +
 +  /* Set the userdata for the ssl context callback function's third
 +     argument */
 +  CINIT(SSL_CTX_DATA, OBJECTPOINT, 109),
 +
 +  /* FTP Option that causes missing dirs to be created on the remote server.
 +     In 7.19.4 we introduced the convenience enums for this option using the
 +     CURLFTP_CREATE_DIR prefix.
 +  */
 +  CINIT(FTP_CREATE_MISSING_DIRS, LONG, 110),
 +
 +  /* Set this to a bitmask value to enable the particular authentications
 +     methods you like. Use this in combination with CURLOPT_PROXYUSERPWD.
 +     Note that setting multiple bits may cause extra network round-trips. */
 +  CINIT(PROXYAUTH, LONG, 111),
 +
 +  /* FTP option that changes the timeout, in seconds, associated with
 +     getting a response.  This is different from transfer timeout time and
 +     essentially places a demand on the FTP server to acknowledge commands
 +     in a timely manner. */
 +  CINIT(FTP_RESPONSE_TIMEOUT, LONG, 112),
 +#define CURLOPT_SERVER_RESPONSE_TIMEOUT CURLOPT_FTP_RESPONSE_TIMEOUT
 +
 +  /* Set this option to one of the CURL_IPRESOLVE_* defines (see below) to
 +     tell libcurl to resolve names to those IP versions only. This only has
 +     affect on systems with support for more than one, i.e IPv4 _and_ IPv6. */
 +  CINIT(IPRESOLVE, LONG, 113),
 +
 +  /* Set this option to limit the size of a file that will be downloaded from
 +     an HTTP or FTP server.
 +
 +     Note there is also _LARGE version which adds large file support for
 +     platforms which have larger off_t sizes.  See MAXFILESIZE_LARGE below. */
 +  CINIT(MAXFILESIZE, LONG, 114),
 +
 +  /* See the comment for INFILESIZE above, but in short, specifies
 +   * the size of the file being uploaded.  -1 means unknown.
 +   */
 +  CINIT(INFILESIZE_LARGE, OFF_T, 115),
 +
 +  /* Sets the continuation offset.  There is also a LONG version of this;
 +   * look above for RESUME_FROM.
 +   */
 +  CINIT(RESUME_FROM_LARGE, OFF_T, 116),
 +
 +  /* Sets the maximum size of data that will be downloaded from
 +   * an HTTP or FTP server.  See MAXFILESIZE above for the LONG version.
 +   */
 +  CINIT(MAXFILESIZE_LARGE, OFF_T, 117),
 +
 +  /* Set this option to the file name of your .netrc file you want libcurl
 +     to parse (using the CURLOPT_NETRC option). If not set, libcurl will do
 +     a poor attempt to find the user's home directory and check for a .netrc
 +     file in there. */
 +  CINIT(NETRC_FILE, STRINGPOINT, 118),
 +
 +  /* Enable SSL/TLS for FTP, pick one of:
 +     CURLUSESSL_TRY     - try using SSL, proceed anyway otherwise
 +     CURLUSESSL_CONTROL - SSL for the control connection or fail
 +     CURLUSESSL_ALL     - SSL for all communication or fail
 +  */
 +  CINIT(USE_SSL, LONG, 119),
 +
 +  /* The _LARGE version of the standard POSTFIELDSIZE option */
 +  CINIT(POSTFIELDSIZE_LARGE, OFF_T, 120),
 +
 +  /* Enable/disable the TCP Nagle algorithm */
 +  CINIT(TCP_NODELAY, LONG, 121),
 +
 +  /* 122 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
 +  /* 123 OBSOLETE. Gone in 7.16.0 */
 +  /* 124 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
 +  /* 125 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
 +  /* 126 OBSOLETE, used in 7.12.3. Gone in 7.13.0 */
 +  /* 127 OBSOLETE. Gone in 7.16.0 */
 +  /* 128 OBSOLETE. Gone in 7.16.0 */
 +
 +  /* When FTP over SSL/TLS is selected (with CURLOPT_USE_SSL), this option
 +     can be used to change libcurl's default action which is to first try
 +     "AUTH SSL" and then "AUTH TLS" in this order, and proceed when a OK
 +     response has been received.
 +
 +     Available parameters are:
 +     CURLFTPAUTH_DEFAULT - let libcurl decide
 +     CURLFTPAUTH_SSL     - try "AUTH SSL" first, then TLS
 +     CURLFTPAUTH_TLS     - try "AUTH TLS" first, then SSL
 +  */
 +  CINIT(FTPSSLAUTH, LONG, 129),
 +
 +  CINIT(IOCTLFUNCTION, FUNCTIONPOINT, 130),
 +  CINIT(IOCTLDATA, OBJECTPOINT, 131),
 +
 +  /* 132 OBSOLETE. Gone in 7.16.0 */
 +  /* 133 OBSOLETE. Gone in 7.16.0 */
 +
 +  /* zero terminated string for pass on to the FTP server when asked for
 +     "account" info */
 +  CINIT(FTP_ACCOUNT, STRINGPOINT, 134),
 +
 +  /* feed cookie into cookie engine */
 +  CINIT(COOKIELIST, STRINGPOINT, 135),
 +
 +  /* ignore Content-Length */
 +  CINIT(IGNORE_CONTENT_LENGTH, LONG, 136),
 +
 +  /* Set to non-zero to skip the IP address received in a 227 PASV FTP server
 +     response. Typically used for FTP-SSL purposes but is not restricted to
 +     that. libcurl will then instead use the same IP address it used for the
 +     control connection. */
 +  CINIT(FTP_SKIP_PASV_IP, LONG, 137),
 +
 +  /* Select "file method" to use when doing FTP, see the curl_ftpmethod
 +     above. */
 +  CINIT(FTP_FILEMETHOD, LONG, 138),
 +
 +  /* Local port number to bind the socket to */
 +  CINIT(LOCALPORT, LONG, 139),
 +
 +  /* Number of ports to try, including the first one set with LOCALPORT.
 +     Thus, setting it to 1 will make no additional attempts but the first.
 +  */
 +  CINIT(LOCALPORTRANGE, LONG, 140),
 +
 +  /* no transfer, set up connection and let application use the socket by
 +     extracting it with CURLINFO_LASTSOCKET */
 +  CINIT(CONNECT_ONLY, LONG, 141),
 +
 +  /* Function that will be called to convert from the
 +     network encoding (instead of using the iconv calls in libcurl) */
 +  CINIT(CONV_FROM_NETWORK_FUNCTION, FUNCTIONPOINT, 142),
 +
 +  /* Function that will be called to convert to the
 +     network encoding (instead of using the iconv calls in libcurl) */
 +  CINIT(CONV_TO_NETWORK_FUNCTION, FUNCTIONPOINT, 143),
 +
 +  /* Function that will be called to convert from UTF8
 +     (instead of using the iconv calls in libcurl)
 +     Note that this is used only for SSL certificate processing */
 +  CINIT(CONV_FROM_UTF8_FUNCTION, FUNCTIONPOINT, 144),
 +
 +  /* if the connection proceeds too quickly then need to slow it down */
 +  /* limit-rate: maximum number of bytes per second to send or receive */
 +  CINIT(MAX_SEND_SPEED_LARGE, OFF_T, 145),
 +  CINIT(MAX_RECV_SPEED_LARGE, OFF_T, 146),
 +
 +  /* Pointer to command string to send if USER/PASS fails. */
 +  CINIT(FTP_ALTERNATIVE_TO_USER, STRINGPOINT, 147),
 +
 +  /* callback function for setting socket options */
 +  CINIT(SOCKOPTFUNCTION, FUNCTIONPOINT, 148),
 +  CINIT(SOCKOPTDATA, OBJECTPOINT, 149),
 +
 +  /* set to 0 to disable session ID re-use for this transfer, default is
 +     enabled (== 1) */
 +  CINIT(SSL_SESSIONID_CACHE, LONG, 150),
 +
 +  /* allowed SSH authentication methods */
 +  CINIT(SSH_AUTH_TYPES, LONG, 151),
 +
 +  /* Used by scp/sftp to do public/private key authentication */
 +  CINIT(SSH_PUBLIC_KEYFILE, STRINGPOINT, 152),
 +  CINIT(SSH_PRIVATE_KEYFILE, STRINGPOINT, 153),
 +
 +  /* Send CCC (Clear Command Channel) after authentication */
 +  CINIT(FTP_SSL_CCC, LONG, 154),
 +
 +  /* Same as TIMEOUT and CONNECTTIMEOUT, but with ms resolution */
 +  CINIT(TIMEOUT_MS, LONG, 155),
 +  CINIT(CONNECTTIMEOUT_MS, LONG, 156),
 +
 +  /* set to zero to disable the libcurl's decoding and thus pass the raw body
 +     data to the application even when it is encoded/compressed */
 +  CINIT(HTTP_TRANSFER_DECODING, LONG, 157),
 +  CINIT(HTTP_CONTENT_DECODING, LONG, 158),
 +
 +  /* Permission used when creating new files and directories on the remote
 +     server for protocols that support it, SFTP/SCP/FILE */
 +  CINIT(NEW_FILE_PERMS, LONG, 159),
 +  CINIT(NEW_DIRECTORY_PERMS, LONG, 160),
 +
 +  /* Set the behaviour of POST when redirecting. Values must be set to one
 +     of CURL_REDIR* defines below. This used to be called CURLOPT_POST301 */
 +  CINIT(POSTREDIR, LONG, 161),
 +
 +  /* used by scp/sftp to verify the host's public key */
 +  CINIT(SSH_HOST_PUBLIC_KEY_MD5, STRINGPOINT, 162),
 +
 +  /* Callback function for opening socket (instead of socket(2)). Optionally,
 +     callback is able change the address or refuse to connect returning
 +     CURL_SOCKET_BAD.  The callback should have type
 +     curl_opensocket_callback */
 +  CINIT(OPENSOCKETFUNCTION, FUNCTIONPOINT, 163),
 +  CINIT(OPENSOCKETDATA, OBJECTPOINT, 164),
 +
 +  /* POST volatile input fields. */
 +  CINIT(COPYPOSTFIELDS, OBJECTPOINT, 165),
 +
 +  /* set transfer mode (;type=<a|i>) when doing FTP via an HTTP proxy */
 +  CINIT(PROXY_TRANSFER_MODE, LONG, 166),
 +
 +  /* Callback function for seeking in the input stream */
 +  CINIT(SEEKFUNCTION, FUNCTIONPOINT, 167),
 +  CINIT(SEEKDATA, OBJECTPOINT, 168),
 +
 +  /* CRL file */
 +  CINIT(CRLFILE, STRINGPOINT, 169),
 +
 +  /* Issuer certificate */
 +  CINIT(ISSUERCERT, STRINGPOINT, 170),
 +
 +  /* (IPv6) Address scope */
 +  CINIT(ADDRESS_SCOPE, LONG, 171),
 +
 +  /* Collect certificate chain info and allow it to get retrievable with
 +     CURLINFO_CERTINFO after the transfer is complete. */
 +  CINIT(CERTINFO, LONG, 172),
 +
 +  /* "name" and "pwd" to use when fetching. */
 +  CINIT(USERNAME, STRINGPOINT, 173),
 +  CINIT(PASSWORD, STRINGPOINT, 174),
 +
 +    /* "name" and "pwd" to use with Proxy when fetching. */
 +  CINIT(PROXYUSERNAME, STRINGPOINT, 175),
 +  CINIT(PROXYPASSWORD, STRINGPOINT, 176),
 +
 +  /* Comma separated list of hostnames defining no-proxy zones. These should
 +     match both hostnames directly, and hostnames within a domain. For
 +     example, local.com will match local.com and www.local.com, but NOT
 +     notlocal.com or www.notlocal.com. For compatibility with other
 +     implementations of this, .local.com will be considered to be the same as
 +     local.com. A single * is the only valid wildcard, and effectively
 +     disables the use of proxy. */
 +  CINIT(NOPROXY, STRINGPOINT, 177),
 +
 +  /* block size for TFTP transfers */
 +  CINIT(TFTP_BLKSIZE, LONG, 178),
 +
 +  /* Socks Service */
 +  CINIT(SOCKS5_GSSAPI_SERVICE, STRINGPOINT, 179), /* DEPRECATED, do not use! */
 +
 +  /* Socks Service */
 +  CINIT(SOCKS5_GSSAPI_NEC, LONG, 180),
 +
 +  /* set the bitmask for the protocols that are allowed to be used for the
 +     transfer, which thus helps the app which takes URLs from users or other
 +     external inputs and want to restrict what protocol(s) to deal
 +     with. Defaults to CURLPROTO_ALL. */
 +  CINIT(PROTOCOLS, LONG, 181),
 +
 +  /* set the bitmask for the protocols that libcurl is allowed to follow to,
 +     as a subset of the CURLOPT_PROTOCOLS ones. That means the protocol needs
 +     to be set in both bitmasks to be allowed to get redirected to. Defaults
 +     to all protocols except FILE and SCP. */
 +  CINIT(REDIR_PROTOCOLS, LONG, 182),
 +
 +  /* set the SSH knownhost file name to use */
 +  CINIT(SSH_KNOWNHOSTS, STRINGPOINT, 183),
 +
 +  /* set the SSH host key callback, must point to a curl_sshkeycallback
 +     function */
 +  CINIT(SSH_KEYFUNCTION, FUNCTIONPOINT, 184),
 +
 +  /* set the SSH host key callback custom pointer */
 +  CINIT(SSH_KEYDATA, OBJECTPOINT, 185),
 +
 +  /* set the SMTP mail originator */
 +  CINIT(MAIL_FROM, STRINGPOINT, 186),
 +
 +  /* set the list of SMTP mail receiver(s) */
 +  CINIT(MAIL_RCPT, OBJECTPOINT, 187),
 +
 +  /* FTP: send PRET before PASV */
 +  CINIT(FTP_USE_PRET, LONG, 188),
 +
 +  /* RTSP request method (OPTIONS, SETUP, PLAY, etc...) */
 +  CINIT(RTSP_REQUEST, LONG, 189),
 +
 +  /* The RTSP session identifier */
 +  CINIT(RTSP_SESSION_ID, STRINGPOINT, 190),
 +
 +  /* The RTSP stream URI */
 +  CINIT(RTSP_STREAM_URI, STRINGPOINT, 191),
 +
 +  /* The Transport: header to use in RTSP requests */
 +  CINIT(RTSP_TRANSPORT, STRINGPOINT, 192),
 +
 +  /* Manually initialize the client RTSP CSeq for this handle */
 +  CINIT(RTSP_CLIENT_CSEQ, LONG, 193),
 +
 +  /* Manually initialize the server RTSP CSeq for this handle */
 +  CINIT(RTSP_SERVER_CSEQ, LONG, 194),
 +
 +  /* The stream to pass to INTERLEAVEFUNCTION. */
 +  CINIT(INTERLEAVEDATA, OBJECTPOINT, 195),
 +
 +  /* Let the application define a custom write method for RTP data */
 +  CINIT(INTERLEAVEFUNCTION, FUNCTIONPOINT, 196),
 +
 +  /* Turn on wildcard matching */
 +  CINIT(WILDCARDMATCH, LONG, 197),
 +
 +  /* Directory matching callback called before downloading of an
 +     individual file (chunk) started */
 +  CINIT(CHUNK_BGN_FUNCTION, FUNCTIONPOINT, 198),
 +
 +  /* Directory matching callback called after the file (chunk)
 +     was downloaded, or skipped */
 +  CINIT(CHUNK_END_FUNCTION, FUNCTIONPOINT, 199),
 +
 +  /* Change match (fnmatch-like) callback for wildcard matching */
 +  CINIT(FNMATCH_FUNCTION, FUNCTIONPOINT, 200),
 +
 +  /* Let the application define custom chunk data pointer */
 +  CINIT(CHUNK_DATA, OBJECTPOINT, 201),
 +
 +  /* FNMATCH_FUNCTION user pointer */
 +  CINIT(FNMATCH_DATA, OBJECTPOINT, 202),
 +
 +  /* send linked-list of name:port:address sets */
 +  CINIT(RESOLVE, OBJECTPOINT, 203),
 +
 +  /* Set a username for authenticated TLS */
 +  CINIT(TLSAUTH_USERNAME, STRINGPOINT, 204),
 +
 +  /* Set a password for authenticated TLS */
 +  CINIT(TLSAUTH_PASSWORD, STRINGPOINT, 205),
 +
 +  /* Set authentication type for authenticated TLS */
 +  CINIT(TLSAUTH_TYPE, STRINGPOINT, 206),
 +
 +  /* Set to 1 to enable the "TE:" header in HTTP requests to ask for
 +     compressed transfer-encoded responses. Set to 0 to disable the use of TE:
 +     in outgoing requests. The current default is 0, but it might change in a
 +     future libcurl release.
 +
 +     libcurl will ask for the compressed methods it knows of, and if that
 +     isn't any, it will not ask for transfer-encoding at all even if this
 +     option is set to 1.
 +
 +  */
 +  CINIT(TRANSFER_ENCODING, LONG, 207),
 +
 +  /* Callback function for closing socket (instead of close(2)). The callback
 +     should have type curl_closesocket_callback */
 +  CINIT(CLOSESOCKETFUNCTION, FUNCTIONPOINT, 208),
 +  CINIT(CLOSESOCKETDATA, OBJECTPOINT, 209),
 +
 +  /* allow GSSAPI credential delegation */
 +  CINIT(GSSAPI_DELEGATION, LONG, 210),
 +
 +  /* Set the name servers to use for DNS resolution */
 +  CINIT(DNS_SERVERS, STRINGPOINT, 211),
 +
 +  /* Time-out accept operations (currently for FTP only) after this amount
 +     of milliseconds. */
 +  CINIT(ACCEPTTIMEOUT_MS, LONG, 212),
 +
 +  /* Set TCP keepalive */
 +  CINIT(TCP_KEEPALIVE, LONG, 213),
 +
 +  /* non-universal keepalive knobs (Linux, AIX, HP-UX, more) */
 +  CINIT(TCP_KEEPIDLE, LONG, 214),
 +  CINIT(TCP_KEEPINTVL, LONG, 215),
 +
 +  /* Enable/disable specific SSL features with a bitmask, see CURLSSLOPT_* */
 +  CINIT(SSL_OPTIONS, LONG, 216),
 +
 +  /* Set the SMTP auth originator */
 +  CINIT(MAIL_AUTH, STRINGPOINT, 217),
 +
 +  /* Enable/disable SASL initial response */
 +  CINIT(SASL_IR, LONG, 218),
 +
 +  /* Function that will be called instead of the internal progress display
 +   * function. This function should be defined as the curl_xferinfo_callback
 +   * prototype defines. (Deprecates CURLOPT_PROGRESSFUNCTION) */
 +  CINIT(XFERINFOFUNCTION, FUNCTIONPOINT, 219),
 +
 +  /* The XOAUTH2 bearer token */
 +  CINIT(XOAUTH2_BEARER, STRINGPOINT, 220),
 +
 +  /* Set the interface string to use as outgoing network
 +   * interface for DNS requests.
 +   * Only supported by the c-ares DNS backend */
 +  CINIT(DNS_INTERFACE, STRINGPOINT, 221),
 +
 +  /* Set the local IPv4 address to use for outgoing DNS requests.
 +   * Only supported by the c-ares DNS backend */
 +  CINIT(DNS_LOCAL_IP4, STRINGPOINT, 222),
 +
 +  /* Set the local IPv4 address to use for outgoing DNS requests.
 +   * Only supported by the c-ares DNS backend */
 +  CINIT(DNS_LOCAL_IP6, STRINGPOINT, 223),
 +
 +  /* Set authentication options directly */
 +  CINIT(LOGIN_OPTIONS, STRINGPOINT, 224),
 +
 +  /* Enable/disable TLS NPN extension (http2 over ssl might fail without) */
 +  CINIT(SSL_ENABLE_NPN, LONG, 225),
 +
 +  /* Enable/disable TLS ALPN extension (http2 over ssl might fail without) */
 +  CINIT(SSL_ENABLE_ALPN, LONG, 226),
 +
 +  /* Time to wait for a response to a HTTP request containing an
 +   * Expect: 100-continue header before sending the data anyway. */
 +  CINIT(EXPECT_100_TIMEOUT_MS, LONG, 227),
 +
 +  /* This points to a linked list of headers used for proxy requests only,
 +     struct curl_slist kind */
 +  CINIT(PROXYHEADER, OBJECTPOINT, 228),
 +
 +  /* Pass in a bitmask of "header options" */
 +  CINIT(HEADEROPT, LONG, 229),
 +
 +  /* The public key in DER form used to validate the peer public key
 +     this option is used only if SSL_VERIFYPEER is true */
 +  CINIT(PINNEDPUBLICKEY, STRINGPOINT, 230),
 +
 +  /* Path to Unix domain socket */
 +  CINIT(UNIX_SOCKET_PATH, STRINGPOINT, 231),
 +
 +  /* Set if we should verify the certificate status. */
 +  CINIT(SSL_VERIFYSTATUS, LONG, 232),
 +
 +  /* Set if we should enable TLS false start. */
 +  CINIT(SSL_FALSESTART, LONG, 233),
 +
 +  /* Do not squash dot-dot sequences */
 +  CINIT(PATH_AS_IS, LONG, 234),
 +
 +  /* Proxy Service Name */
 +  CINIT(PROXY_SERVICE_NAME, STRINGPOINT, 235),
 +
 +  /* Service Name */
 +  CINIT(SERVICE_NAME, STRINGPOINT, 236),
 +
 +  /* Wait/don't wait for pipe/mutex to clarify */
 +  CINIT(PIPEWAIT, LONG, 237),
 +
 +  /* Set the protocol used when curl is given a URL without a protocol */
 +  CINIT(DEFAULT_PROTOCOL, STRINGPOINT, 238),
 +
 +  /* Set stream weight, 1 - 256 (default is 16) */
 +  CINIT(STREAM_WEIGHT, LONG, 239),
 +
 +  /* Set stream dependency on another CURL handle */
 +  CINIT(STREAM_DEPENDS, OBJECTPOINT, 240),
 +
 +  /* Set E-xclusive stream dependency on another CURL handle */
 +  CINIT(STREAM_DEPENDS_E, OBJECTPOINT, 241),
 +
 +  /* Do not send any tftp option requests to the server */
 +  CINIT(TFTP_NO_OPTIONS, LONG, 242),
 +
 +  /* Linked-list of host:port:connect-to-host:connect-to-port,
 +     overrides the URL's host:port (only for the network layer) */
 +  CINIT(CONNECT_TO, OBJECTPOINT, 243),
 +
 +  /* Set TCP Fast Open */
 +  CINIT(TCP_FASTOPEN, LONG, 244),
 +
 +  /* Continue to send data if the server responds early with an
 +   * HTTP status code >= 300 */
 +  CINIT(KEEP_SENDING_ON_ERROR, LONG, 245),
 +
 +  /* The CApath or CAfile used to validate the proxy certificate
 +     this option is used only if PROXY_SSL_VERIFYPEER is true */
 +  CINIT(PROXY_CAINFO, STRINGPOINT, 246),
 +
 +  /* The CApath directory used to validate the proxy certificate
 +     this option is used only if PROXY_SSL_VERIFYPEER is true */
 +  CINIT(PROXY_CAPATH, STRINGPOINT, 247),
 +
 +  /* Set if we should verify the proxy in ssl handshake,
 +     set 1 to verify. */
 +  CINIT(PROXY_SSL_VERIFYPEER, LONG, 248),
 +
 +  /* Set if we should verify the Common name from the proxy certificate in ssl
 +   * handshake, set 1 to check existence, 2 to ensure that it matches
 +   * the provided hostname. */
 +  CINIT(PROXY_SSL_VERIFYHOST, LONG, 249),
 +
 +  /* What version to specifically try to use for proxy.
 +     See CURL_SSLVERSION defines below. */
 +  CINIT(PROXY_SSLVERSION, LONG, 250),
 +
 +  /* Set a username for authenticated TLS for proxy */
 +  CINIT(PROXY_TLSAUTH_USERNAME, STRINGPOINT, 251),
 +
 +  /* Set a password for authenticated TLS for proxy */
 +  CINIT(PROXY_TLSAUTH_PASSWORD, STRINGPOINT, 252),
 +
 +  /* Set authentication type for authenticated TLS for proxy */
 +  CINIT(PROXY_TLSAUTH_TYPE, STRINGPOINT, 253),
 +
 +  /* name of the file keeping your private SSL-certificate for proxy */
 +  CINIT(PROXY_SSLCERT, STRINGPOINT, 254),
 +
 +  /* type of the file keeping your SSL-certificate ("DER", "PEM", "ENG") for
 +     proxy */
 +  CINIT(PROXY_SSLCERTTYPE, STRINGPOINT, 255),
 +
 +  /* name of the file keeping your private SSL-key for proxy */
 +  CINIT(PROXY_SSLKEY, STRINGPOINT, 256),
 +
 +  /* type of the file keeping your private SSL-key ("DER", "PEM", "ENG") for
 +     proxy */
 +  CINIT(PROXY_SSLKEYTYPE, STRINGPOINT, 257),
 +
 +  /* password for the SSL private key for proxy */
 +  CINIT(PROXY_KEYPASSWD, STRINGPOINT, 258),
 +
 +  /* Specify which SSL ciphers to use for proxy */
 +  CINIT(PROXY_SSL_CIPHER_LIST, STRINGPOINT, 259),
 +
 +  /* CRL file for proxy */
 +  CINIT(PROXY_CRLFILE, STRINGPOINT, 260),
 +
 +  /* Enable/disable specific SSL features with a bitmask for proxy, see
 +     CURLSSLOPT_* */
 +  CINIT(PROXY_SSL_OPTIONS, LONG, 261),
 +
 +  /* Name of pre proxy to use. */
 +  CINIT(PRE_PROXY, STRINGPOINT, 262),
 +
 +  /* The public key in DER form used to validate the proxy public key
 +     this option is used only if PROXY_SSL_VERIFYPEER is true */
 +  CINIT(PROXY_PINNEDPUBLICKEY, STRINGPOINT, 263),
 +
 +  /* Path to an abstract Unix domain socket */
 +  CINIT(ABSTRACT_UNIX_SOCKET, STRINGPOINT, 264),
 +
 +  /* Suppress proxy CONNECT response headers from user callbacks */
 +  CINIT(SUPPRESS_CONNECT_HEADERS, LONG, 265),
 +
++  /* The request target, instead of extracted from the URL */
++  CINIT(REQUEST_TARGET, STRINGPOINT, 266),
++
++  /* bitmask of allowed auth methods for connections to SOCKS5 proxies */
++  CINIT(SOCKS5_AUTH, LONG, 267),
++
++  /* Enable/disable SSH compression */
++  CINIT(SSH_COMPRESSION, LONG, 268),
++
++  /* Post MIME data. */
++  CINIT(MIMEPOST, OBJECTPOINT, 269),
++
 +  CURLOPT_LASTENTRY /* the last unused */
 +} CURLoption;
 +
 +#ifndef CURL_NO_OLDIES /* define this to test if your app builds with all
 +                          the obsolete stuff removed! */
 +
 +/* Backwards compatibility with older names */
 +/* These are scheduled to disappear by 2011 */
 +
 +/* This was added in version 7.19.1 */
 +#define CURLOPT_POST301 CURLOPT_POSTREDIR
 +
 +/* These are scheduled to disappear by 2009 */
 +
 +/* The following were added in 7.17.0 */
 +#define CURLOPT_SSLKEYPASSWD CURLOPT_KEYPASSWD
 +#define CURLOPT_FTPAPPEND CURLOPT_APPEND
 +#define CURLOPT_FTPLISTONLY CURLOPT_DIRLISTONLY
 +#define CURLOPT_FTP_SSL CURLOPT_USE_SSL
 +
 +/* The following were added earlier */
 +
 +#define CURLOPT_SSLCERTPASSWD CURLOPT_KEYPASSWD
 +#define CURLOPT_KRB4LEVEL CURLOPT_KRBLEVEL
 +
 +#else
 +/* This is set if CURL_NO_OLDIES is defined at compile-time */
 +#undef CURLOPT_DNS_USE_GLOBAL_CACHE /* soon obsolete */
 +#endif
 +
 +
 +  /* Below here follows defines for the CURLOPT_IPRESOLVE option. If a host
 +     name resolves addresses using more than one IP protocol version, this
 +     option might be handy to force libcurl to use a specific IP version. */
 +#define CURL_IPRESOLVE_WHATEVER 0 /* default, resolves addresses to all IP
 +                                     versions that your system allows */
 +#define CURL_IPRESOLVE_V4       1 /* resolve to IPv4 addresses */
 +#define CURL_IPRESOLVE_V6       2 /* resolve to IPv6 addresses */
 +
 +  /* three convenient "aliases" that follow the name scheme better */
 +#define CURLOPT_RTSPHEADER CURLOPT_HTTPHEADER
 +
 +  /* These enums are for use with the CURLOPT_HTTP_VERSION option. */
 +enum {
 +  CURL_HTTP_VERSION_NONE, /* setting this means we don't care, and that we'd
 +                             like the library to choose the best possible
 +                             for us! */
 +  CURL_HTTP_VERSION_1_0,  /* please use HTTP 1.0 in the request */
 +  CURL_HTTP_VERSION_1_1,  /* please use HTTP 1.1 in the request */
 +  CURL_HTTP_VERSION_2_0,  /* please use HTTP 2 in the request */
 +  CURL_HTTP_VERSION_2TLS, /* use version 2 for HTTPS, version 1.1 for HTTP */
 +  CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE,  /* please use HTTP 2 without HTTP/1.1
 +                                           Upgrade */
 +
 +  CURL_HTTP_VERSION_LAST /* *ILLEGAL* http version */
 +};
 +
 +/* Convenience definition simple because the name of the version is HTTP/2 and
 +   not 2.0. The 2_0 version of the enum name was set while the version was
 +   still planned to be 2.0 and we stick to it for compatibility. */
 +#define CURL_HTTP_VERSION_2 CURL_HTTP_VERSION_2_0
 +
 +/*
 + * Public API enums for RTSP requests
 + */
 +enum {
 +    CURL_RTSPREQ_NONE, /* first in list */
 +    CURL_RTSPREQ_OPTIONS,
 +    CURL_RTSPREQ_DESCRIBE,
 +    CURL_RTSPREQ_ANNOUNCE,
 +    CURL_RTSPREQ_SETUP,
 +    CURL_RTSPREQ_PLAY,
 +    CURL_RTSPREQ_PAUSE,
 +    CURL_RTSPREQ_TEARDOWN,
 +    CURL_RTSPREQ_GET_PARAMETER,
 +    CURL_RTSPREQ_SET_PARAMETER,
 +    CURL_RTSPREQ_RECORD,
 +    CURL_RTSPREQ_RECEIVE,
 +    CURL_RTSPREQ_LAST /* last in list */
 +};
 +
 +  /* These enums are for use with the CURLOPT_NETRC option. */
 +enum CURL_NETRC_OPTION {
 +  CURL_NETRC_IGNORED,     /* The .netrc will never be read.
 +                           * This is the default. */
 +  CURL_NETRC_OPTIONAL,    /* A user:password in the URL will be preferred
 +                           * to one in the .netrc. */
 +  CURL_NETRC_REQUIRED,    /* A user:password in the URL will be ignored.
 +                           * Unless one is set programmatically, the .netrc
 +                           * will be queried. */
 +  CURL_NETRC_LAST
 +};
 +
 +enum {
 +  CURL_SSLVERSION_DEFAULT,
 +  CURL_SSLVERSION_TLSv1, /* TLS 1.x */
 +  CURL_SSLVERSION_SSLv2,
 +  CURL_SSLVERSION_SSLv3,
 +  CURL_SSLVERSION_TLSv1_0,
 +  CURL_SSLVERSION_TLSv1_1,
 +  CURL_SSLVERSION_TLSv1_2,
 +  CURL_SSLVERSION_TLSv1_3,
 +
 +  CURL_SSLVERSION_LAST /* never use, keep last */
 +};
 +
 +enum {
 +  CURL_SSLVERSION_MAX_NONE =     0,
 +  CURL_SSLVERSION_MAX_DEFAULT =  (CURL_SSLVERSION_TLSv1   << 16),
 +  CURL_SSLVERSION_MAX_TLSv1_0 =  (CURL_SSLVERSION_TLSv1_0 << 16),
 +  CURL_SSLVERSION_MAX_TLSv1_1 =  (CURL_SSLVERSION_TLSv1_1 << 16),
 +  CURL_SSLVERSION_MAX_TLSv1_2 =  (CURL_SSLVERSION_TLSv1_2 << 16),
 +  CURL_SSLVERSION_MAX_TLSv1_3 =  (CURL_SSLVERSION_TLSv1_3 << 16),
 +
 +  /* never use, keep last */
 +  CURL_SSLVERSION_MAX_LAST =     (CURL_SSLVERSION_LAST    << 16)
 +};
 +
 +enum CURL_TLSAUTH {
 +  CURL_TLSAUTH_NONE,
 +  CURL_TLSAUTH_SRP,
 +  CURL_TLSAUTH_LAST /* never use, keep last */
 +};
 +
 +/* symbols to use with CURLOPT_POSTREDIR.
 +   CURL_REDIR_POST_301, CURL_REDIR_POST_302 and CURL_REDIR_POST_303
 +   can be bitwise ORed so that CURL_REDIR_POST_301 | CURL_REDIR_POST_302
 +   | CURL_REDIR_POST_303 == CURL_REDIR_POST_ALL */
 +
 +#define CURL_REDIR_GET_ALL  0
 +#define CURL_REDIR_POST_301 1
 +#define CURL_REDIR_POST_302 2
 +#define CURL_REDIR_POST_303 4
 +#define CURL_REDIR_POST_ALL \
 +    (CURL_REDIR_POST_301|CURL_REDIR_POST_302|CURL_REDIR_POST_303)
 +
 +typedef enum {
 +  CURL_TIMECOND_NONE,
 +
 +  CURL_TIMECOND_IFMODSINCE,
 +  CURL_TIMECOND_IFUNMODSINCE,
 +  CURL_TIMECOND_LASTMOD,
 +
 +  CURL_TIMECOND_LAST
 +} curl_TimeCond;
 +
++/* Special size_t value signaling a zero-terminated string. */
++#define CURL_ZERO_TERMINATED ((size_t) -1)
 +
 +/* curl_strequal() and curl_strnequal() are subject for removal in a future
-    libcurl, see lib/README.curlx for details
++   release */
++CURL_EXTERN int curl_strequal(const char *s1, const char *s2);
++CURL_EXTERN int curl_strnequal(const char *s1, const char *s2, size_t n);
++
++/* Mime/form handling support. */
++typedef struct curl_mime_s      curl_mime;      /* Mime context. */
++typedef struct curl_mimepart_s  curl_mimepart;  /* Mime part context. */
++
++/*
++ * NAME curl_mime_init()
++ *
++ * DESCRIPTION
++ *
++ * Create a mime context and return its handle. The easy parameter is the
++ * target handle.
++ */
++CURL_EXTERN curl_mime *curl_mime_init(CURL *easy);
++
++/*
++ * NAME curl_mime_free()
++ *
++ * DESCRIPTION
++ *
++ * release a mime handle and its substructures.
++ */
++CURL_EXTERN void curl_mime_free(curl_mime *mime);
++
++/*
++ * NAME curl_mime_addpart()
++ *
++ * DESCRIPTION
++ *
++ * Append a new empty part to the given mime context and return a handle to
++ * the created part.
++ */
++CURL_EXTERN curl_mimepart *curl_mime_addpart(curl_mime *mime);
++
++/*
++ * NAME curl_mime_name()
++ *
++ * DESCRIPTION
++ *
++ * Set mime/form part name.
++ */
++CURL_EXTERN CURLcode curl_mime_name(curl_mimepart *part, const char *name);
++
++/*
++ * NAME curl_mime_filename()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part remote file name.
++ */
++CURL_EXTERN CURLcode curl_mime_filename(curl_mimepart *part,
++                                        const char *filename);
++
++/*
++ * NAME curl_mime_type()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part type.
++ */
++CURL_EXTERN CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);
++
++/*
++ * NAME curl_mime_encoder()
++ *
++ * DESCRIPTION
++ *
++ * Set mime data transfer encoder.
++ */
++CURL_EXTERN CURLcode curl_mime_encoder(curl_mimepart *part,
++                                       const char *encoding);
++
++/*
++ * NAME curl_mime_data()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part data source from memory data,
++ */
++CURL_EXTERN CURLcode curl_mime_data(curl_mimepart *part,
++                                    const char *data, size_t datasize);
++
++/*
++ * NAME curl_mime_filedata()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part data source from named file.
++ */
++CURL_EXTERN CURLcode curl_mime_filedata(curl_mimepart *part,
++                                        const char *filename);
++
++/*
++ * NAME curl_mime_data_cb()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part data source from callback function.
++ */
++CURL_EXTERN CURLcode curl_mime_data_cb(curl_mimepart *part,
++                                       curl_off_t datasize,
++                                       curl_read_callback readfunc,
++                                       curl_seek_callback seekfunc,
++                                       curl_free_callback freefunc,
++                                       void *arg);
 +
-    !checksrc! disable SPACEBEFOREPAREN 2
- */
- CURL_EXTERN int (curl_strequal)(const char *s1, const char *s2);
- CURL_EXTERN int (curl_strnequal)(const char *s1, const char *s2, size_t n);
++/*
++ * NAME curl_mime_subparts()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part data source from subparts.
++ */
++CURL_EXTERN CURLcode curl_mime_subparts(curl_mimepart *part,
++                                        curl_mime *subparts);
++/*
++ * NAME curl_mime_headers()
++ *
++ * DESCRIPTION
++ *
++ * Set mime part headers.
++ */
++CURL_EXTERN CURLcode curl_mime_headers(curl_mimepart *part,
++                                       struct curl_slist *headers,
++                                       int take_ownership);
 +
++/* Old form API. */
 +/* name is uppercase CURLFORM_<name> */
 +#ifdef CFINIT
 +#undef CFINIT
 +#endif
 +
 +#ifdef CURL_ISOCPP
 +#define CFINIT(name) CURLFORM_ ## name
 +#else
 +/* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */
 +#define CFINIT(name) CURLFORM_/**/name
 +#endif
 +
 +typedef enum {
 +  CFINIT(NOTHING),        /********* the first one is unused ************/
 +
 +  /*  */
 +  CFINIT(COPYNAME),
 +  CFINIT(PTRNAME),
 +  CFINIT(NAMELENGTH),
 +  CFINIT(COPYCONTENTS),
 +  CFINIT(PTRCONTENTS),
 +  CFINIT(CONTENTSLENGTH),
 +  CFINIT(FILECONTENT),
 +  CFINIT(ARRAY),
 +  CFINIT(OBSOLETE),
 +  CFINIT(FILE),
 +
 +  CFINIT(BUFFER),
 +  CFINIT(BUFFERPTR),
 +  CFINIT(BUFFERLENGTH),
 +
 +  CFINIT(CONTENTTYPE),
 +  CFINIT(CONTENTHEADER),
 +  CFINIT(FILENAME),
 +  CFINIT(END),
 +  CFINIT(OBSOLETE2),
 +
 +  CFINIT(STREAM),
 +  CFINIT(CONTENTLEN), /* added in 7.46.0, provide a curl_off_t length */
 +
 +  CURLFORM_LASTENTRY /* the last unused */
 +} CURLformoption;
 +
 +#undef CFINIT /* done */
 +
 +/* structure to be used as parameter for CURLFORM_ARRAY */
 +struct curl_forms {
 +  CURLformoption option;
 +  const char     *value;
 +};
 +
 +/* use this for multipart formpost building */
 +/* Returns code for curl_formadd()
 + *
 + * Returns:
 + * CURL_FORMADD_OK             on success
 + * CURL_FORMADD_MEMORY         if the FormInfo allocation fails
 + * CURL_FORMADD_OPTION_TWICE   if one option is given twice for one Form
 + * CURL_FORMADD_NULL           if a null pointer was given for a char
 + * CURL_FORMADD_MEMORY         if the allocation of a FormInfo struct failed
 + * CURL_FORMADD_UNKNOWN_OPTION if an unknown option was used
 + * CURL_FORMADD_INCOMPLETE     if the some FormInfo is not complete (or error)
 + * CURL_FORMADD_MEMORY         if a curl_httppost struct cannot be allocated
 + * CURL_FORMADD_MEMORY         if some allocation for string copying failed.
 + * CURL_FORMADD_ILLEGAL_ARRAY  if an illegal option is used in an array
 + *
 + ***************************************************************************/
 +typedef enum {
 +  CURL_FORMADD_OK, /* first, no error */
 +
 +  CURL_FORMADD_MEMORY,
 +  CURL_FORMADD_OPTION_TWICE,
 +  CURL_FORMADD_NULL,
 +  CURL_FORMADD_UNKNOWN_OPTION,
 +  CURL_FORMADD_INCOMPLETE,
 +  CURL_FORMADD_ILLEGAL_ARRAY,
 +  CURL_FORMADD_DISABLED, /* libcurl was built with this disabled */
 +
 +  CURL_FORMADD_LAST /* last */
 +} CURLFORMcode;
 +
 +/*
 + * NAME curl_formadd()
 + *
 + * DESCRIPTION
 + *
 + * Pretty advanced function for building multi-part formposts. Each invoke
 + * adds one part that together construct a full post. Then use
 + * CURLOPT_HTTPPOST to send it off to libcurl.
 + */
 +CURL_EXTERN CURLFORMcode curl_formadd(struct curl_httppost **httppost,
 +                                      struct curl_httppost **last_post,
 +                                      ...);
 +
 +/*
 + * callback function for curl_formget()
 + * The void *arg pointer will be the one passed as second argument to
 + *   curl_formget().
 + * The character buffer passed to it must not be freed.
 + * Should return the buffer length passed to it as the argument "len" on
 + *   success.
 + */
 +typedef size_t (*curl_formget_callback)(void *arg, const char *buf,
 +                                        size_t len);
 +
 +/*
 + * NAME curl_formget()
 + *
 + * DESCRIPTION
 + *
 + * Serialize a curl_httppost struct built with curl_formadd().
 + * Accepts a void pointer as second argument which will be passed to
 + * the curl_formget_callback function.
 + * Returns 0 on success.
 + */
 +CURL_EXTERN int curl_formget(struct curl_httppost *form, void *arg,
 +                             curl_formget_callback append);
 +/*
 + * NAME curl_formfree()
 + *
 + * DESCRIPTION
 + *
 + * Free a multipart formpost previously built with curl_formadd().
 + */
 +CURL_EXTERN void curl_formfree(struct curl_httppost *form);
 +
 +/*
 + * NAME curl_getenv()
 + *
 + * DESCRIPTION
 + *
 + * Returns a malloc()'ed string that MUST be curl_free()ed after usage is
 + * complete. DEPRECATED - see lib/README.curlx
 + */
 +CURL_EXTERN char *curl_getenv(const char *variable);
 +
 +/*
 + * NAME curl_version()
 + *
 + * DESCRIPTION
 + *
 + * Returns a static ascii string of the libcurl version.
 + */
 +CURL_EXTERN char *curl_version(void);
 +
 +/*
 + * NAME curl_easy_escape()
 + *
 + * DESCRIPTION
 + *
 + * Escapes URL strings (converts all letters consider illegal in URLs to their
 + * %XX versions). This function returns a new allocated string or NULL if an
 + * error occurred.
 + */
 +CURL_EXTERN char *curl_easy_escape(CURL *handle,
 +                                   const char *string,
 +                                   int length);
 +
 +/* the previous version: */
 +CURL_EXTERN char *curl_escape(const char *string,
 +                              int length);
 +
 +
 +/*
 + * NAME curl_easy_unescape()
 + *
 + * DESCRIPTION
 + *
 + * Unescapes URL encoding in strings (converts all %XX codes to their 8bit
 + * versions). This function returns a new allocated string or NULL if an error
 + * occurred.
 + * Conversion Note: On non-ASCII platforms the ASCII %XX codes are
 + * converted into the host encoding.
 + */
 +CURL_EXTERN char *curl_easy_unescape(CURL *handle,
 +                                     const char *string,
 +                                     int length,
 +                                     int *outlength);
 +
 +/* the previous version */
 +CURL_EXTERN char *curl_unescape(const char *string,
 +                                int length);
 +
 +/*
 + * NAME curl_free()
 + *
 + * DESCRIPTION
 + *
 + * Provided for de-allocation in the same translation unit that did the
 + * allocation. Added in libcurl 7.10
 + */
 +CURL_EXTERN void curl_free(void *p);
 +
 +/*
 + * NAME curl_global_init()
 + *
 + * DESCRIPTION
 + *
 + * curl_global_init() should be invoked exactly once for each application that
 + * uses libcurl and before any call of other libcurl functions.
 + *
 + * This function is not thread-safe!
 + */
 +CURL_EXTERN CURLcode curl_global_init(long flags);
 +
 +/*
 + * NAME curl_global_init_mem()
 + *
 + * DESCRIPTION
 + *
 + * curl_global_init() or curl_global_init_mem() should be invoked exactly once
 + * for each application that uses libcurl.  This function can be used to
 + * initialize libcurl and set user defined memory management callback
 + * functions.  Users can implement memory management routines to check for
 + * memory leaks, check for mis-use of the curl library etc.  User registered
 + * callback routines with be invoked by this library instead of the system
 + * memory management routines like malloc, free etc.
 + */
 +CURL_EXTERN CURLcode curl_global_init_mem(long flags,
 +                                          curl_malloc_callback m,
 +                                          curl_free_callback f,
 +                                          curl_realloc_callback r,
 +                                          curl_strdup_callback s,
 +                                          curl_calloc_callback c);
 +
 +/*
 + * NAME curl_global_cleanup()
 + *
 + * DESCRIPTION
 + *
 + * curl_global_cleanup() should be invoked exactly once for each application
 + * that uses libcurl
 + */
 +CURL_EXTERN void curl_global_cleanup(void);
 +
 +/* linked-list structure for the CURLOPT_QUOTE option (and other) */
 +struct curl_slist {
 +  char *data;
 +  struct curl_slist *next;
 +};
 +
 +/*
++ * NAME curl_global_sslset()
++ *
++ * DESCRIPTION
++ *
++ * When built with multiple SSL backends, curl_global_sslset() allows to
++ * choose one. This function can only be called once, and it must be called
++ * *before* curl_global_init().
++ *
++ * The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The
++ * backend can also be specified via the name parameter (passing -1 as id).
++ * If both id and name are specified, the name will be ignored. If neither id
++ * nor name are specified, the function will fail with
++ * CURLSSLSET_UNKNOWN_BACKEND and set the "avail" pointer to the
++ * NULL-terminated list of available backends.
++ *
++ * Upon success, the function returns CURLSSLSET_OK.
++ *
++ * If the specified SSL backend is not available, the function returns
++ * CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a NULL-terminated
++ * list of available SSL backends.
++ *
++ * The SSL backend can be set only once. If it has already been set, a
++ * subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.
++ */
++
++typedef struct {
++  curl_sslbackend id;
++  const char *name;
++} curl_ssl_backend;
++
++typedef enum {
++  CURLSSLSET_OK = 0,
++  CURLSSLSET_UNKNOWN_BACKEND,
++  CURLSSLSET_TOO_LATE,
++  CURLSSLSET_NO_BACKENDS /* libcurl was built without any SSL support */
++} CURLsslset;
++
++CURL_EXTERN CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
++                                          const curl_ssl_backend ***avail);
++
++/*
 + * NAME curl_slist_append()
 + *
 + * DESCRIPTION
 + *
 + * Appends a string to a linked list. If no list exists, it will be created
 + * first. Returns the new list, after appending.
 + */
 +CURL_EXTERN struct curl_slist *curl_slist_append(struct curl_slist *,
 +                                                 const char *);
 +
 +/*
 + * NAME curl_slist_free_all()
 + *
 + * DESCRIPTION
 + *
 + * free a previously built curl_slist.
 + */
 +CURL_EXTERN void curl_slist_free_all(struct curl_slist *);
 +
 +/*
 + * NAME curl_getdate()
 + *
 + * DESCRIPTION
 + *
 + * Returns the time, in seconds since 1 Jan 1970 of the time string given in
 + * the first argument. The time argument in the second parameter is unused
 + * and should be set to NULL.
 + */
 +CURL_EXTERN time_t curl_getdate(const char *p, const time_t *unused);
 +
 +/* info about the certificate chain, only for OpenSSL builds. Asked
 +   for with CURLOPT_CERTINFO / CURLINFO_CERTINFO */
 +struct curl_certinfo {
 +  int num_of_certs;             /* number of certificates with information */
 +  struct curl_slist **certinfo; /* for each index in this array, there's a
 +                                   linked list with textual information in the
 +                                   format "name: value" */
 +};
 +
- /* enum for the different supported SSL backends */
- typedef enum {
-   CURLSSLBACKEND_NONE = 0,
-   CURLSSLBACKEND_OPENSSL = 1,
-   CURLSSLBACKEND_GNUTLS = 2,
-   CURLSSLBACKEND_NSS = 3,
-   CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
-   CURLSSLBACKEND_GSKIT = 5,
-   CURLSSLBACKEND_POLARSSL = 6,
-   CURLSSLBACKEND_CYASSL = 7,
-   CURLSSLBACKEND_SCHANNEL = 8,
-   CURLSSLBACKEND_DARWINSSL = 9,
-   CURLSSLBACKEND_AXTLS = 10,
-   CURLSSLBACKEND_MBEDTLS = 11
- } curl_sslbackend;
- 
- /* aliases for library clones and renames */
- #define CURLSSLBACKEND_LIBRESSL 1
- #define CURLSSLBACKEND_BORINGSSL 1
- #define CURLSSLBACKEND_WOLFSSL 6
- 
 +/* Information about the SSL library used and the respective internal SSL
 +   handle, which can be used to obtain further information regarding the
 +   connection. Asked for with CURLINFO_TLS_SSL_PTR or CURLINFO_TLS_SESSION. */
 +struct curl_tlssessioninfo {
 +  curl_sslbackend backend;
 +  void *internals;
 +};
 +
 +#define CURLINFO_STRING   0x100000
 +#define CURLINFO_LONG     0x200000
 +#define CURLINFO_DOUBLE   0x300000
 +#define CURLINFO_SLIST    0x400000
 +#define CURLINFO_PTR      0x400000 /* same as SLIST */
 +#define CURLINFO_SOCKET   0x500000
++#define CURLINFO_OFF_T    0x600000
 +#define CURLINFO_MASK     0x0fffff
 +#define CURLINFO_TYPEMASK 0xf00000
 +
 +typedef enum {
 +  CURLINFO_NONE, /* first, never use this */
 +  CURLINFO_EFFECTIVE_URL    = CURLINFO_STRING + 1,
 +  CURLINFO_RESPONSE_CODE    = CURLINFO_LONG   + 2,
 +  CURLINFO_TOTAL_TIME       = CURLINFO_DOUBLE + 3,
 +  CURLINFO_NAMELOOKUP_TIME  = CURLINFO_DOUBLE + 4,
 +  CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
 +  CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
 +  CURLINFO_SIZE_UPLOAD      = CURLINFO_DOUBLE + 7,
++  CURLINFO_SIZE_UPLOAD_T    = CURLINFO_OFF_T  + 7,
 +  CURLINFO_SIZE_DOWNLOAD    = CURLINFO_DOUBLE + 8,
++  CURLINFO_SIZE_DOWNLOAD_T  = CURLINFO_OFF_T  + 8,
 +  CURLINFO_SPEED_DOWNLOAD   = CURLINFO_DOUBLE + 9,
++  CURLINFO_SPEED_DOWNLOAD_T = CURLINFO_OFF_T  + 9,
 +  CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
++  CURLINFO_SPEED_UPLOAD_T   = CURLINFO_OFF_T  + 10,
 +  CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
 +  CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
 +  CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
 +  CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
 +  CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
++  CURLINFO_CONTENT_LENGTH_DOWNLOAD_T = CURLINFO_OFF_T  + 15,
 +  CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
++  CURLINFO_CONTENT_LENGTH_UPLOAD_T   = CURLINFO_OFF_T  + 16,
 +  CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
 +  CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
 +  CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
 +  CURLINFO_REDIRECT_COUNT   = CURLINFO_LONG   + 20,
 +  CURLINFO_PRIVATE          = CURLINFO_STRING + 21,
 +  CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
 +  CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
 +  CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
 +  CURLINFO_OS_ERRNO         = CURLINFO_LONG   + 25,
 +  CURLINFO_NUM_CONNECTS     = CURLINFO_LONG   + 26,
 +  CURLINFO_SSL_ENGINES      = CURLINFO_SLIST  + 27,
 +  CURLINFO_COOKIELIST       = CURLINFO_SLIST  + 28,
 +  CURLINFO_LASTSOCKET       = CURLINFO_LONG   + 29,
 +  CURLINFO_FTP_ENTRY_PATH   = CURLINFO_STRING + 30,
 +  CURLINFO_REDIRECT_URL     = CURLINFO_STRING + 31,
 +  CURLINFO_PRIMARY_IP       = CURLINFO_STRING + 32,
 +  CURLINFO_APPCONNECT_TIME  = CURLINFO_DOUBLE + 33,
 +  CURLINFO_CERTINFO         = CURLINFO_PTR    + 34,
 +  CURLINFO_CONDITION_UNMET  = CURLINFO_LONG   + 35,
 +  CURLINFO_RTSP_SESSION_ID  = CURLINFO_STRING + 36,
 +  CURLINFO_RTSP_CLIENT_CSEQ = CURLINFO_LONG   + 37,
 +  CURLINFO_RTSP_SERVER_CSEQ = CURLINFO_LONG   + 38,
 +  CURLINFO_RTSP_CSEQ_RECV   = CURLINFO_LONG   + 39,
 +  CURLINFO_PRIMARY_PORT     = CURLINFO_LONG   + 40,
 +  CURLINFO_LOCAL_IP         = CURLINFO_STRING + 41,
 +  CURLINFO_LOCAL_PORT       = CURLINFO_LONG   + 42,
 +  CURLINFO_TLS_SESSION      = CURLINFO_PTR    + 43,
 +  CURLINFO_ACTIVESOCKET     = CURLINFO_SOCKET + 44,
 +  CURLINFO_TLS_SSL_PTR      = CURLINFO_PTR    + 45,
 +  CURLINFO_HTTP_VERSION     = CURLINFO_LONG   + 46,
 +  CURLINFO_PROXY_SSL_VERIFYRESULT = CURLINFO_LONG + 47,
 +  CURLINFO_PROTOCOL         = CURLINFO_LONG   + 48,
 +  CURLINFO_SCHEME           = CURLINFO_STRING + 49,
 +  /* Fill in new entries below here! */
 +
 +  CURLINFO_LASTONE          = 49
 +} CURLINFO;
 +
 +/* CURLINFO_RESPONSE_CODE is the new name for the option previously known as
 +   CURLINFO_HTTP_CODE */
 +#define CURLINFO_HTTP_CODE CURLINFO_RESPONSE_CODE
 +
 +typedef enum {
 +  CURLCLOSEPOLICY_NONE, /* first, never use this */
 +
 +  CURLCLOSEPOLICY_OLDEST,
 +  CURLCLOSEPOLICY_LEAST_RECENTLY_USED,
 +  CURLCLOSEPOLICY_LEAST_TRAFFIC,
 +  CURLCLOSEPOLICY_SLOWEST,
 +  CURLCLOSEPOLICY_CALLBACK,
 +
 +  CURLCLOSEPOLICY_LAST /* last, never use this */
 +} curl_closepolicy;
 +
 +#define CURL_GLOBAL_SSL (1<<0)
 +#define CURL_GLOBAL_WIN32 (1<<1)
 +#define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
 +#define CURL_GLOBAL_NOTHING 0
 +#define CURL_GLOBAL_DEFAULT CURL_GLOBAL_ALL
 +#define CURL_GLOBAL_ACK_EINTR (1<<2)
 +
 +
 +/*****************************************************************************
 + * Setup defines, protos etc for the sharing stuff.
 + */
 +
 +/* Different data locks for a single share */
 +typedef enum {
 +  CURL_LOCK_DATA_NONE = 0,
 +  /*  CURL_LOCK_DATA_SHARE is used internally to say that
 +   *  the locking is just made to change the internal state of the share
 +   *  itself.
 +   */
 +  CURL_LOCK_DATA_SHARE,
 +  CURL_LOCK_DATA_COOKIE,
 +  CURL_LOCK_DATA_DNS,
 +  CURL_LOCK_DATA_SSL_SESSION,
 +  CURL_LOCK_DATA_CONNECT,
 +  CURL_LOCK_DATA_LAST
 +} curl_lock_data;
 +
 +/* Different lock access types */
 +typedef enum {
 +  CURL_LOCK_ACCESS_NONE = 0,   /* unspecified action */
 +  CURL_LOCK_ACCESS_SHARED = 1, /* for read perhaps */
 +  CURL_LOCK_ACCESS_SINGLE = 2, /* for write perhaps */
 +  CURL_LOCK_ACCESS_LAST        /* never use */
 +} curl_lock_access;
 +
 +typedef void (*curl_lock_function)(CURL *handle,
 +                                   curl_lock_data data,
 +                                   curl_lock_access locktype,
 +                                   void *userptr);
 +typedef void (*curl_unlock_function)(CURL *handle,
 +                                     curl_lock_data data,
 +                                     void *userptr);
 +
 +
 +typedef enum {
 +  CURLSHE_OK,  /* all is fine */
 +  CURLSHE_BAD_OPTION, /* 1 */
 +  CURLSHE_IN_USE,     /* 2 */
 +  CURLSHE_INVALID,    /* 3 */
 +  CURLSHE_NOMEM,      /* 4 out of memory */
 +  CURLSHE_NOT_BUILT_IN, /* 5 feature not present in lib */
 +  CURLSHE_LAST        /* never use */
 +} CURLSHcode;
 +
 +typedef enum {
 +  CURLSHOPT_NONE,  /* don't use */
 +  CURLSHOPT_SHARE,   /* specify a data type to share */
 +  CURLSHOPT_UNSHARE, /* specify which data type to stop sharing */
 +  CURLSHOPT_LOCKFUNC,   /* pass in a 'curl_lock_function' pointer */
 +  CURLSHOPT_UNLOCKFUNC, /* pass in a 'curl_unlock_function' pointer */
 +  CURLSHOPT_USERDATA,   /* pass in a user data pointer used in the lock/unlock
 +                           callback functions */
 +  CURLSHOPT_LAST  /* never use */
 +} CURLSHoption;
 +
 +CURL_EXTERN CURLSH *curl_share_init(void);
 +CURL_EXTERN CURLSHcode curl_share_setopt(CURLSH *, CURLSHoption option, ...);
 +CURL_EXTERN CURLSHcode curl_share_cleanup(CURLSH *);
 +
 +/****************************************************************************
 + * Structures for querying information about the curl library at runtime.
 + */
 +
 +typedef enum {
 +  CURLVERSION_FIRST,
 +  CURLVERSION_SECOND,
 +  CURLVERSION_THIRD,
 +  CURLVERSION_FOURTH,
 +  CURLVERSION_LAST /* never actually use this */
 +} CURLversion;
 +
 +/* The 'CURLVERSION_NOW' is the symbolic name meant to be used by
 +   basically all programs ever that want to get version information. It is
 +   meant to be a built-in version number for what kind of struct the caller
 +   expects. If the struct ever changes, we redefine the NOW to another enum
 +   from above. */
 +#define CURLVERSION_NOW CURLVERSION_FOURTH
 +
 +typedef struct {
 +  CURLversion age;          /* age of the returned struct */
 +  const char *version;      /* LIBCURL_VERSION */
 +  unsigned int version_num; /* LIBCURL_VERSION_NUM */
 +  const char *host;         /* OS/host/cpu/machine when configured */
 +  int features;             /* bitmask, see defines below */
 +  const char *ssl_version;  /* human readable string */
 +  long ssl_version_num;     /* not used anymore, always 0 */
 +  const char *libz_version; /* human readable string */
 +  /* protocols is terminated by an entry with a NULL protoname */
 +  const char * const *protocols;
 +
 +  /* The fields below this were added in CURLVERSION_SECOND */
 +  const char *ares;
 +  int ares_num;
 +
 +  /* This field was added in CURLVERSION_THIRD */
 +  const char *libidn;
 +
 +  /* These field were added in CURLVERSION_FOURTH */
 +
 +  /* Same as '_libiconv_version' if built with HAVE_ICONV */
 +  int iconv_ver_num;
 +
 +  const char *libssh_version; /* human readable string */
 +
 +} curl_version_info_data;
 +
 +#define CURL_VERSION_IPV6         (1<<0)  /* IPv6-enabled */
 +#define CURL_VERSION_KERBEROS4    (1<<1)  /* Kerberos V4 auth is supported
 +                                             (deprecated) */
 +#define CURL_VERSION_SSL          (1<<2)  /* SSL options are present */
 +#define CURL_VERSION_LIBZ         (1<<3)  /* libz features are present */
 +#define CURL_VERSION_NTLM         (1<<4)  /* NTLM auth is supported */
 +#define CURL_VERSION_GSSNEGOTIATE (1<<5)  /* Negotiate auth is supported
 +                                             (deprecated) */
 +#define CURL_VERSION_DEBUG        (1<<6)  /* Built with debug capabilities */
 +#define CURL_VERSION_ASYNCHDNS    (1<<7)  /* Asynchronous DNS resolves */
 +#define CURL_VERSION_SPNEGO       (1<<8)  /* SPNEGO auth is supported */
 +#define CURL_VERSION_LARGEFILE    (1<<9)  /* Supports files larger than 2GB */
 +#define CURL_VERSION_IDN          (1<<10) /* Internationized Domain Names are
 +                                             supported */
 +#define CURL_VERSION_SSPI         (1<<11) /* Built against Windows SSPI */
 +#define CURL_VERSION_CONV         (1<<12) /* Character conversions supported */
 +#define CURL_VERSION_CURLDEBUG    (1<<13) /* Debug memory tracking supported */
 +#define CURL_VERSION_TLSAUTH_SRP  (1<<14) /* TLS-SRP auth is supported */
 +#define CURL_VERSION_NTLM_WB      (1<<15) /* NTLM delegation to winbind helper
 +                                             is supported */
 +#define CURL_VERSION_HTTP2        (1<<16) /* HTTP2 support built-in */
 +#define CURL_VERSION_GSSAPI       (1<<17) /* Built against a GSS-API library */
 +#define CURL_VERSION_KERBEROS5    (1<<18) /* Kerberos V5 auth is supported */
 +#define CURL_VERSION_UNIX_SOCKETS (1<<19) /* Unix domain sockets support */
 +#define CURL_VERSION_PSL          (1<<20) /* Mozilla's Public Suffix List, used
 +                                             for cookie domain verification */
 +#define CURL_VERSION_HTTPS_PROXY  (1<<21) /* HTTPS-proxy support built-in */
++#define CURL_VERSION_MULTI_SSL    (1<<22) /* Multiple SSL backends available */
 +
 + /*
 + * NAME curl_version_info()
 + *
 + * DESCRIPTION
 + *
 + * This function returns a pointer to a static copy of the version info
 + * struct. See above.
 + */
 +CURL_EXTERN curl_version_info_data *curl_version_info(CURLversion);
 +
 +/*
 + * NAME curl_easy_strerror()
 + *
 + * DESCRIPTION
 + *
 + * The curl_easy_strerror function may be used to turn a CURLcode value
 + * into the equivalent human readable error string.  This is useful
 + * for printing meaningful error messages.
 + */
 +CURL_EXTERN const char *curl_easy_strerror(CURLcode);
 +
 +/*
 + * NAME curl_share_strerror()
 + *
 + * DESCRIPTION
 + *
 + * The curl_share_strerror function may be used to turn a CURLSHcode value
 + * into the equivalent human readable error string.  This is useful
 + * for printing meaningful error messages.
 + */
 +CURL_EXTERN const char *curl_share_strerror(CURLSHcode);
 +
 +/*
 + * NAME curl_easy_pause()
 + *
 + * DESCRIPTION
 + *
 + * The curl_easy_pause function pauses or unpauses transfers. Select the new
 + * state by setting the bitmask, use the convenience defines below.
 + *
 + */
 +CURL_EXTERN CURLcode curl_easy_pause(CURL *handle, int bitmask);
 +
 +#define CURLPAUSE_RECV      (1<<0)
 +#define CURLPAUSE_RECV_CONT (0)
 +
 +#define CURLPAUSE_SEND      (1<<2)
 +#define CURLPAUSE_SEND_CONT (0)
 +
 +#define CURLPAUSE_ALL       (CURLPAUSE_RECV|CURLPAUSE_SEND)
 +#define CURLPAUSE_CONT      (CURLPAUSE_RECV_CONT|CURLPAUSE_SEND_CONT)
 +
 +#ifdef  __cplusplus
 +}
 +#endif
 +
 +/* unfortunately, the easy.h and multi.h include files need options and info
 +  stuff before they can be included! */
 +#include "easy.h" /* nothing in curl is fun without the easy stuff */
 +#include "multi.h"
 +
 +/* the typechecker doesn't work in C++ (yet) */
 +#if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
 +    ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) && \
 +    !defined(__cplusplus) && !defined(CURL_DISABLE_TYPECHECK)
 +#include "typecheck-gcc.h"
 +#else
 +#if defined(__STDC__) && (__STDC__ >= 1)
 +#if 0 /* Triggers clang -Wdisabled-macro-expansion, skip for CMake.  */
 +/* This preprocessor magic that replaces a call with the exact same call is
 +   only done to make sure application authors pass exactly three arguments
 +   to these functions. */
 +#define curl_easy_setopt(handle,opt,param) curl_easy_setopt(handle,opt,param)
 +#define curl_easy_getinfo(handle,info,arg) curl_easy_getinfo(handle,info,arg)
 +#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
 +#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
 +#endif
 +#endif /* __STDC__ >= 1 */
 +#endif /* gcc >= 4.3 && !__cplusplus */
 +
 +#endif /* __CURL_CURL_H */
diff --cc Utilities/cmcurl/include/curl/curlver.h
index 667b7eb,0000000..18dc356
mode 100644,000000..100644
--- a/Utilities/cmcurl/include/curl/curlver.h
+++ b/Utilities/cmcurl/include/curl/curlver.h
@@@ -1,77 -1,0 +1,77 @@@
 +#ifndef __CURL_CURLVER_H
 +#define __CURL_CURLVER_H
 +/***************************************************************************
 + *                                  _   _ ____  _
 + *  Project                     ___| | | |  _ \| |
 + *                             / __| | | | |_) | |
 + *                            | (__| |_| |  _ <| |___
 + *                             \___|\___/|_| \_\_____|
 + *
 + * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 + *
 + * This software is licensed as described in the file COPYING, which
 + * you should have received as part of this distribution. The terms
 + * are also available at https://curl.haxx.se/docs/copyright.html.
 + *
 + * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 + * copies of the Software, and permit persons to whom the Software is
 + * furnished to do so, under the terms of the COPYING file.
 + *
 + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 + * KIND, either express or implied.
 + *
 + ***************************************************************************/
 +
 +/* This header file contains nothing but libcurl version info, generated by
 +   a script at release-time. This was made its own header file in 7.11.2 */
 +
 +/* This is the global package copyright */
 +#define LIBCURL_COPYRIGHT "1996 - 2017 Daniel Stenberg, <daniel at haxx.se>."
 +
 +/* This is the version number of the libcurl package from which this header
 +   file origins: */
- #define LIBCURL_VERSION "7.54.1"
++#define LIBCURL_VERSION "7.56.0"
 +
 +/* The numeric version number is also available "in parts" by using these
 +   defines: */
 +#define LIBCURL_VERSION_MAJOR 7
- #define LIBCURL_VERSION_MINOR 54
- #define LIBCURL_VERSION_PATCH 1
++#define LIBCURL_VERSION_MINOR 56
++#define LIBCURL_VERSION_PATCH 0
 +
 +/* This is the numeric version of the libcurl version number, meant for easier
 +   parsing and comparions by programs. The LIBCURL_VERSION_NUM define will
 +   always follow this syntax:
 +
 +         0xXXYYZZ
 +
 +   Where XX, YY and ZZ are the main version, release and patch numbers in
 +   hexadecimal (using 8 bits each). All three numbers are always represented
 +   using two digits.  1.2 would appear as "0x010200" while version 9.11.7
 +   appears as "0x090b07".
 +
 +   This 6-digit (24 bits) hexadecimal number does not show pre-release number,
 +   and it is always a greater number in a more recent release. It makes
 +   comparisons with greater than and less than work.
 +
 +   Note: This define is the full hex number and _does not_ use the
 +   CURL_VERSION_BITS() macro since curl's own configure script greps for it
 +   and needs it to contain the full number.
 +*/
- #define LIBCURL_VERSION_NUM 0x073601
++#define LIBCURL_VERSION_NUM 0x073800
 +
 +/*
 + * This is the date and time when the full source package was created. The
 + * timestamp is not stored in git, as the timestamp is properly set in the
 + * tarballs by the maketgz script.
 + *
 + * The format of the date follows this template:
 + *
 + * "2007-11-23"
 + */
 +#define LIBCURL_TIMESTAMP "[unreleased]"
 +
 +#define CURL_VERSION_BITS(x,y,z) ((x)<<16|(y)<<8|z)
 +#define CURL_AT_LEAST_VERSION(x,y,z) \
 +  (LIBCURL_VERSION_NUM >= CURL_VERSION_BITS(x, y, z))
 +
 +#endif /* __CURL_CURLVER_H */
diff --cc Utilities/cmcurl/lib/CMakeLists.txt
index 76dd6c6,0000000..f3d9084
mode 100644,000000..100644
--- a/Utilities/cmcurl/lib/CMakeLists.txt
+++ b/Utilities/cmcurl/lib/CMakeLists.txt
@@@ -1,134 -1,0 +1,139 @@@
 +set(LIB_NAME cmcurl)
 +
- configure_file(${CURL_SOURCE_DIR}/include/curl/curlbuild.h.cmake
-   ${CURL_BINARY_DIR}/include/curl/curlbuild.h)
 +configure_file(curl_config.h.cmake
 +  ${CMAKE_CURRENT_BINARY_DIR}/curl_config.h)
 +
 +transform_makefile_inc("Makefile.inc" "${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake")
 +include(${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake)
 +
 +list(APPEND HHEADERS
 +  ${CMAKE_CURRENT_BINARY_DIR}/curl_config.h
-   ${CURL_BINARY_DIR}/include/curl/curlbuild.h
 +  )
 +
 +if(MSVC AND NOT CURL_STATICLIB)
 +  list(APPEND CSOURCES libcurl.rc)
++  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4127")
 +endif()
 +
 +# SET(CSOURCES
 +# #  memdebug.c -not used
 +# # nwlib.c - Not used
 +# # strtok.c - specify later
 +# # strtoofft.c - specify later
 +# )
 +
 +# # if we have Kerberos 4, right now this is never on
 +# #OPTION(CURL_KRB4 "Use Kerberos 4" OFF)
 +# IF(CURL_KRB4)
 +# SET(CSOURCES ${CSOURCES}
 +# krb4.c
 +# security.c
 +# )
 +# ENDIF(CURL_KRB4)
 +
 +# #OPTION(CURL_MALLOC_DEBUG "Debug mallocs in Curl" OFF)
 +# MARK_AS_ADVANCED(CURL_MALLOC_DEBUG)
 +# IF(CURL_MALLOC_DEBUG)
 +# SET(CSOURCES ${CSOURCES}
 +# memdebug.c
 +# )
 +# ENDIF(CURL_MALLOC_DEBUG)
 +
 +# # only build compat strtoofft if we need to
 +# IF(NOT HAVE_STRTOLL AND NOT HAVE__STRTOI64)
 +# SET(CSOURCES ${CSOURCES}
 +# strtoofft.c
 +# )
 +# ENDIF(NOT HAVE_STRTOLL AND NOT HAVE__STRTOI64)
 +
 +
 +# The rest of the build
 +
 +include_directories(${CMAKE_CURRENT_BINARY_DIR}/../include)
 +include_directories(${CMAKE_CURRENT_SOURCE_DIR}/..)
 +include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../include)
 +include_directories(${CMAKE_CURRENT_BINARY_DIR}/..)
 +include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 +include_directories(${CMAKE_CURRENT_BINARY_DIR})
 +if(USE_ARES)
 +  include_directories(${CARES_INCLUDE_DIR})
 +endif()
 +
 +if(CURL_STATICLIB)
 +  # Static lib
 +  set(CURL_USER_DEFINED_DYNAMIC_OR_STATIC STATIC)
 +else()
 +  # DLL / so dynamic lib
 +  set(CURL_USER_DEFINED_DYNAMIC_OR_STATIC SHARED)
 +endif()
 +
 +# For windows we want to install OPENSSL_LIBRARIES dlls
 +# and also copy them into the build tree so that testing
 +# can find them.
 +if(CMAKE_USE_OPENSSL AND OPENSSL_FOUND AND WIN32)
 +  find_file(CMAKE_EAY_DLL NAME libeay32.dll HINTS ${OPENSSL_INCLUDE_DIR}/..)
 +  find_file(CMAKE_SSL_DLL NAME ssleay32.dll HINTS ${OPENSSL_INCLUDE_DIR}/..)
 +  mark_as_advanced(CMAKE_EAY_DLL CMAKE_SSL_DLL)
 +  if(CMAKE_SSL_DLL AND CMAKE_EAY_DLL)
 +    set(CMAKE_CURL_SSL_DLLS ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/libeay32.dll
 +      ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/ssleay32.dll)
 +    add_custom_command(OUTPUT
 +      ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/libeay32.dll
 +      DEPENDS ${CMAKE_EAY_DLL}
 +      COMMAND ${CMAKE_COMMAND} -E copy  ${CMAKE_EAY_DLL}
 +      ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/libeay32.dll)
 +    add_custom_command(OUTPUT
 +      ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/ssleay32.dll
 +      DEPENDS ${CMAKE_SSL_DLL}
 +      COMMAND ${CMAKE_COMMAND} -E copy  ${CMAKE_SSL_DLL}
 +      ${CMake_BIN_DIR}/${CMAKE_CFG_INTDIR}/ssleay32.dll)
 +    install(PROGRAMS ${CMAKE_EAY_DLL} ${CMAKE_SSL_DLL} DESTINATION bin)
 +  endif()
 +endif()
 +
 +add_library(
 +  ${LIB_NAME}
 +  ${CURL_USER_DEFINED_DYNAMIC_OR_STATIC}
 +  ${HHEADERS} ${CSOURCES}
 +  ${CMAKE_CURL_SSL_DLLS}
 +  )
 +
 +target_link_libraries(${LIB_NAME} ${CURL_LIBS})
 +
 +if(0) # This code not needed for building within CMake.
 +if(WIN32)
 +  add_definitions( -D_USRDLL )
 +endif()
 +endif()
 +
 +set_target_properties(${LIB_NAME} PROPERTIES COMPILE_DEFINITIONS BUILDING_LIBCURL)
 +
 +if(0) # This code not needed for building within CMake.
 +if(HIDES_CURL_PRIVATE_SYMBOLS)
 +  set_property(TARGET ${LIB_NAME} APPEND PROPERTY COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS")
 +  set_property(TARGET ${LIB_NAME} APPEND PROPERTY COMPILE_FLAGS ${CURL_CFLAG_SYMBOLS_HIDE})
 +endif()
 +
 +# Remove the "lib" prefix since the library is already named "libcurl".
 +set_target_properties(${LIB_NAME} PROPERTIES PREFIX "")
 +set_target_properties(${LIB_NAME} PROPERTIES IMPORT_PREFIX "")
 +
 +if(WIN32)
 +  if(NOT CURL_STATICLIB)
 +    # Add "_imp" as a suffix before the extension to avoid conflicting with the statically linked "libcurl.lib"
 +    set_target_properties(${LIB_NAME} PROPERTIES IMPORT_SUFFIX "_imp.lib")
++
++    set_target_properties (${LIB_NAME} PROPERTIES
++       DEBUG_POSTFIX "-d"
++       # Note: no postfix for release variants, let user choose what style of release he wants
++       # MINSIZEREL_POSTFIX "-z"
++       # RELWITHDEBINFO_POSTFIX "-g"
++       )
 +  endif()
 +endif()
 +
 +install(TARGETS ${LIB_NAME}
 +  ARCHIVE DESTINATION lib
 +  LIBRARY DESTINATION lib
 +  RUNTIME DESTINATION bin)
 +endif()
diff --cc Utilities/cmcurl/lib/curl_config.h.cmake
index f9d54b4,0000000..274dd45
mode 100644,000000..100644
--- a/Utilities/cmcurl/lib/curl_config.h.cmake
+++ b/Utilities/cmcurl/lib/curl_config.h.cmake
@@@ -1,1006 -1,0 +1,1000 @@@
 +/* lib/curl_config.h.in.  Generated somehow by cmake.  */
 +
 +/* when building libcurl itself */
 +#cmakedefine BUILDING_LIBCURL 1
 +
 +/* to disable cookies support */
 +#cmakedefine CURL_DISABLE_COOKIES 1
 +
 +/* to disable cryptographic authentication */
 +#cmakedefine CURL_DISABLE_CRYPTO_AUTH 1
 +
 +/* to disable DICT */
 +#cmakedefine CURL_DISABLE_DICT 1
 +
 +/* to disable FILE */
 +#cmakedefine CURL_DISABLE_FILE 1
 +
 +/* to disable FTP */
 +#cmakedefine CURL_DISABLE_FTP 1
 +
 +/* to disable GOPHER */
 +#cmakedefine CURL_DISABLE_GOPHER 1
 +
 +/* to disable IMAP */
 +#cmakedefine CURL_DISABLE_IMAP 1
 +
 +/* to disable HTTP */
 +#cmakedefine CURL_DISABLE_HTTP 1
 +
 +/* to disable LDAP */
 +#cmakedefine CURL_DISABLE_LDAP 1
 +
 +/* to disable LDAPS */
 +#cmakedefine CURL_DISABLE_LDAPS 1
 +
 +/* to disable POP3 */
 +#cmakedefine CURL_DISABLE_POP3 1
 +
 +/* to disable proxies */
 +#cmakedefine CURL_DISABLE_PROXY 1
 +
 +/* to disable RTSP */
 +#cmakedefine CURL_DISABLE_RTSP 1
 +
- /* to disable RTMP */
- #cmakedefine CURL_DISABLE_RTMP 1
- 
 +/* to disable SMB */
 +#cmakedefine CURL_DISABLE_SMB 1
 +
 +/* to disable SMTP */
 +#cmakedefine CURL_DISABLE_SMTP 1
 +
 +/* to disable TELNET */
 +#cmakedefine CURL_DISABLE_TELNET 1
 +
 +/* to disable TFTP */
 +#cmakedefine CURL_DISABLE_TFTP 1
 +
 +/* to disable verbose strings */
 +#cmakedefine CURL_DISABLE_VERBOSE_STRINGS 1
 +
 +/* to make a symbol visible */
 +#cmakedefine CURL_EXTERN_SYMBOL ${CURL_EXTERN_SYMBOL}
 +/* Ensure using CURL_EXTERN_SYMBOL is possible */
 +#ifndef CURL_EXTERN_SYMBOL
 +#define CURL_EXTERN_SYMBOL
 +#endif
 +
 +/* Use Windows LDAP implementation */
 +#cmakedefine USE_WIN32_LDAP 1
 +
 +/* when not building a shared library */
 +#cmakedefine CURL_STATICLIB 1
 +
- /* Set to explicitly specify we don't want to use thread-safe functions */
- #cmakedefine DISABLED_THREADSAFE 1
- 
 +/* your Entropy Gathering Daemon socket pathname */
 +#cmakedefine EGD_SOCKET ${EGD_SOCKET}
 +
 +/* Define if you want to enable IPv6 support */
 +#cmakedefine ENABLE_IPV6 1
 +
 +/* Define to the type qualifier of arg 1 for getnameinfo. */
 +#cmakedefine GETNAMEINFO_QUAL_ARG1 ${GETNAMEINFO_QUAL_ARG1}
 +
 +/* Define to the type of arg 1 for getnameinfo. */
 +#cmakedefine GETNAMEINFO_TYPE_ARG1 ${GETNAMEINFO_TYPE_ARG1}
 +
 +/* Define to the type of arg 2 for getnameinfo. */
 +#cmakedefine GETNAMEINFO_TYPE_ARG2 ${GETNAMEINFO_TYPE_ARG2}
 +
 +/* Define to the type of args 4 and 6 for getnameinfo. */
 +#cmakedefine GETNAMEINFO_TYPE_ARG46 ${GETNAMEINFO_TYPE_ARG46}
 +
 +/* Define to the type of arg 7 for getnameinfo. */
 +#cmakedefine GETNAMEINFO_TYPE_ARG7 ${GETNAMEINFO_TYPE_ARG7}
 +
 +/* Specifies the number of arguments to getservbyport_r */
 +#cmakedefine GETSERVBYPORT_R_ARGS ${GETSERVBYPORT_R_ARGS}
 +
 +/* Specifies the size of the buffer to pass to getservbyport_r */
 +#cmakedefine GETSERVBYPORT_R_BUFSIZE ${GETSERVBYPORT_R_BUFSIZE}
 +
 +/* Define to 1 if you have the alarm function. */
 +#cmakedefine HAVE_ALARM 1
 +
 +/* Define to 1 if you have the <alloca.h> header file. */
 +#cmakedefine HAVE_ALLOCA_H 1
 +
 +/* Define to 1 if you have the <arpa/inet.h> header file. */
 +#cmakedefine HAVE_ARPA_INET_H 1
 +
 +/* Define to 1 if you have the <arpa/tftp.h> header file. */
 +#cmakedefine HAVE_ARPA_TFTP_H 1
 +
 +/* Define to 1 if you have the <assert.h> header file. */
 +#cmakedefine HAVE_ASSERT_H 1
 +
 +/* Define to 1 if you have the `basename' function. */
 +#cmakedefine HAVE_BASENAME 1
 +
 +/* Define to 1 if bool is an available type. */
 +#cmakedefine HAVE_BOOL_T 1
 +
 +/* Define to 1 if you have the clock_gettime function and monotonic timer. */
 +#cmakedefine HAVE_CLOCK_GETTIME_MONOTONIC 1
 +
 +/* Define to 1 if you have the `closesocket' function. */
 +#cmakedefine HAVE_CLOSESOCKET 1
 +
 +/* Define to 1 if you have the `CRYPTO_cleanup_all_ex_data' function. */
 +#cmakedefine HAVE_CRYPTO_CLEANUP_ALL_EX_DATA 1
 +
 +/* Define to 1 if you have the <crypto.h> header file. */
 +#cmakedefine HAVE_CRYPTO_H 1
 +
 +/* Define to 1 if you have the <des.h> header file. */
 +#cmakedefine HAVE_DES_H 1
 +
 +/* Define to 1 if you have the <dlfcn.h> header file. */
 +#cmakedefine HAVE_DLFCN_H 1
 +
 +/* Define to 1 if you have the `ENGINE_load_builtin_engines' function. */
 +#cmakedefine HAVE_ENGINE_LOAD_BUILTIN_ENGINES 1
 +
 +/* Define to 1 if you have the <errno.h> header file. */
 +#cmakedefine HAVE_ERRNO_H 1
 +
 +/* Define to 1 if you have the <err.h> header file. */
 +#cmakedefine HAVE_ERR_H 1
 +
 +/* Define to 1 if you have the fcntl function. */
 +#cmakedefine HAVE_FCNTL 1
 +
 +/* Define to 1 if you have the <fcntl.h> header file. */
 +#cmakedefine HAVE_FCNTL_H 1
 +
 +/* Define to 1 if you have a working fcntl O_NONBLOCK function. */
 +#cmakedefine HAVE_FCNTL_O_NONBLOCK 1
 +
 +/* Define to 1 if you have the fdopen function. */
 +#cmakedefine HAVE_FDOPEN 1
 +
 +/* Define to 1 if you have the `fork' function. */
 +#cmakedefine HAVE_FORK 1
 +
 +/* Define to 1 if you have the freeaddrinfo function. */
 +#cmakedefine HAVE_FREEADDRINFO 1
 +
 +/* Define to 1 if you have the freeifaddrs function. */
 +#cmakedefine HAVE_FREEIFADDRS 1
 +
 +/* Define to 1 if you have the ftruncate function. */
 +#cmakedefine HAVE_FTRUNCATE 1
 +
 +/* Define to 1 if you have a working getaddrinfo function. */
 +#cmakedefine HAVE_GETADDRINFO 1
 +
 +/* Define to 1 if you have the `geteuid' function. */
 +#cmakedefine HAVE_GETEUID 1
 +
 +/* Define to 1 if you have the gethostbyaddr function. */
 +#cmakedefine HAVE_GETHOSTBYADDR 1
 +
 +/* Define to 1 if you have the gethostbyaddr_r function. */
 +#cmakedefine HAVE_GETHOSTBYADDR_R 1
 +
 +/* gethostbyaddr_r() takes 5 args */
 +#cmakedefine HAVE_GETHOSTBYADDR_R_5 1
 +
 +/* gethostbyaddr_r() takes 7 args */
 +#cmakedefine HAVE_GETHOSTBYADDR_R_7 1
 +
 +/* gethostbyaddr_r() takes 8 args */
 +#cmakedefine HAVE_GETHOSTBYADDR_R_8 1
 +
 +/* Define to 1 if you have the gethostbyname function. */
 +#cmakedefine HAVE_GETHOSTBYNAME 1
 +
 +/* Define to 1 if you have the gethostbyname_r function. */
 +#cmakedefine HAVE_GETHOSTBYNAME_R 1
 +
 +/* gethostbyname_r() takes 3 args */
 +#cmakedefine HAVE_GETHOSTBYNAME_R_3 1
 +
 +/* gethostbyname_r() takes 5 args */
 +#cmakedefine HAVE_GETHOSTBYNAME_R_5 1
 +
 +/* gethostbyname_r() takes 6 args */
 +#cmakedefine HAVE_GETHOSTBYNAME_R_6 1
 +
 +/* Define to 1 if you have the gethostname function. */
 +#cmakedefine HAVE_GETHOSTNAME 1
 +
 +/* Define to 1 if you have a working getifaddrs function. */
 +#cmakedefine HAVE_GETIFADDRS 1
 +
 +/* Define to 1 if you have the getnameinfo function. */
 +#cmakedefine HAVE_GETNAMEINFO 1
 +
 +/* Define to 1 if you have the `getpass_r' function. */
 +#cmakedefine HAVE_GETPASS_R 1
 +
 +/* Define to 1 if you have the `getppid' function. */
 +#cmakedefine HAVE_GETPPID 1
 +
 +/* Define to 1 if you have the `getprotobyname' function. */
 +#cmakedefine HAVE_GETPROTOBYNAME 1
 +
 +/* Define to 1 if you have the `getpwuid' function. */
 +#cmakedefine HAVE_GETPWUID 1
 +
 +/* Define to 1 if you have the `getrlimit' function. */
 +#cmakedefine HAVE_GETRLIMIT 1
 +
 +/* Define to 1 if you have the getservbyport_r function. */
 +#cmakedefine HAVE_GETSERVBYPORT_R 1
 +
 +/* Define to 1 if you have the `gettimeofday' function. */
 +#cmakedefine HAVE_GETTIMEOFDAY 1
 +
 +/* Define to 1 if you have a working glibc-style strerror_r function. */
 +#cmakedefine HAVE_GLIBC_STRERROR_R 1
 +
 +/* Define to 1 if you have a working gmtime_r function. */
 +#cmakedefine HAVE_GMTIME_R 1
 +
 +/* if you have the gssapi libraries */
 +#cmakedefine HAVE_GSSAPI 1
 +
 +/* Define to 1 if you have the <gssapi/gssapi_generic.h> header file. */
 +#cmakedefine HAVE_GSSAPI_GSSAPI_GENERIC_H 1
 +
 +/* Define to 1 if you have the <gssapi/gssapi.h> header file. */
 +#cmakedefine HAVE_GSSAPI_GSSAPI_H 1
 +
 +/* Define to 1 if you have the <gssapi/gssapi_krb5.h> header file. */
 +#cmakedefine HAVE_GSSAPI_GSSAPI_KRB5_H 1
 +
 +/* if you have the GNU gssapi libraries */
 +#cmakedefine HAVE_GSSGNU 1
 +
 +/* if you have the Heimdal gssapi libraries */
 +#cmakedefine HAVE_GSSHEIMDAL 1
 +
 +/* if you have the MIT gssapi libraries */
 +#cmakedefine HAVE_GSSMIT 1
 +
 +/* Define to 1 if you have the `idna_strerror' function. */
 +#cmakedefine HAVE_IDNA_STRERROR 1
 +
 +/* Define to 1 if you have the `idn_free' function. */
 +#cmakedefine HAVE_IDN_FREE 1
 +
 +/* Define to 1 if you have the <idn-free.h> header file. */
 +#cmakedefine HAVE_IDN_FREE_H 1
 +
 +/* Define to 1 if you have the <ifaddrs.h> header file. */
 +#cmakedefine HAVE_IFADDRS_H 1
 +
 +/* Define to 1 if you have the `inet_addr' function. */
 +#cmakedefine HAVE_INET_ADDR 1
 +
 +/* Define to 1 if you have the inet_ntoa_r function. */
 +#cmakedefine HAVE_INET_NTOA_R 1
 +
 +/* inet_ntoa_r() takes 2 args */
 +#cmakedefine HAVE_INET_NTOA_R_2 1
 +
 +/* inet_ntoa_r() takes 3 args */
 +#cmakedefine HAVE_INET_NTOA_R_3 1
 +
 +/* Define to 1 if you have a IPv6 capable working inet_ntop function. */
 +#cmakedefine HAVE_INET_NTOP 1
 +
 +/* Define to 1 if you have a IPv6 capable working inet_pton function. */
 +#cmakedefine HAVE_INET_PTON 1
 +
 +/* Define to 1 if you have the <inttypes.h> header file. */
 +#cmakedefine HAVE_INTTYPES_H 1
 +
 +/* Define to 1 if you have the ioctl function. */
 +#cmakedefine HAVE_IOCTL 1
 +
 +/* Define to 1 if you have the ioctlsocket function. */
 +#cmakedefine HAVE_IOCTLSOCKET 1
 +
 +/* Define to 1 if you have the IoctlSocket camel case function. */
 +#cmakedefine HAVE_IOCTLSOCKET_CAMEL 1
 +
 +/* Define to 1 if you have a working IoctlSocket camel case FIONBIO function.
 +   */
 +#cmakedefine HAVE_IOCTLSOCKET_CAMEL_FIONBIO 1
 +
 +/* Define to 1 if you have a working ioctlsocket FIONBIO function. */
 +#cmakedefine HAVE_IOCTLSOCKET_FIONBIO 1
 +
 +/* Define to 1 if you have a working ioctl FIONBIO function. */
 +#cmakedefine HAVE_IOCTL_FIONBIO 1
 +
 +/* Define to 1 if you have a working ioctl SIOCGIFADDR function. */
 +#cmakedefine HAVE_IOCTL_SIOCGIFADDR 1
 +
 +/* Define to 1 if you have the <io.h> header file. */
 +#cmakedefine HAVE_IO_H 1
 +
 +/* if you have the Kerberos4 libraries (including -ldes) */
 +#cmakedefine HAVE_KRB4 1
 +
 +/* Define to 1 if you have the `krb_get_our_ip_for_realm' function. */
 +#cmakedefine HAVE_KRB_GET_OUR_IP_FOR_REALM 1
 +
 +/* Define to 1 if you have the <krb.h> header file. */
 +#cmakedefine HAVE_KRB_H 1
 +
 +/* Define to 1 if you have the lber.h header file. */
 +#cmakedefine HAVE_LBER_H 1
 +
 +/* Define to 1 if you have the ldapssl.h header file. */
 +#cmakedefine HAVE_LDAPSSL_H 1
 +
 +/* Define to 1 if you have the ldap.h header file. */
 +#cmakedefine HAVE_LDAP_H 1
 +
 +/* Use LDAPS implementation */
 +#cmakedefine HAVE_LDAP_SSL 1
 +
 +/* Define to 1 if you have the ldap_ssl.h header file. */
 +#cmakedefine HAVE_LDAP_SSL_H 1
 +
 +/* Define to 1 if you have the `ldap_url_parse' function. */
 +#cmakedefine HAVE_LDAP_URL_PARSE 1
 +
 +/* Define to 1 if you have the <libgen.h> header file. */
 +#cmakedefine HAVE_LIBGEN_H 1
 +
 +/* Define to 1 if you have the `idn' library (-lidn). */
 +#cmakedefine HAVE_LIBIDN 1
 +
 +/* Define to 1 if you have the `resolv' library (-lresolv). */
 +#cmakedefine HAVE_LIBRESOLV 1
 +
 +/* Define to 1 if you have the `resolve' library (-lresolve). */
 +#cmakedefine HAVE_LIBRESOLVE 1
 +
 +/* Define to 1 if you have the `socket' library (-lsocket). */
 +#cmakedefine HAVE_LIBSOCKET 1
 +
 +/* Define to 1 if you have the `ssh2' library (-lssh2). */
 +#cmakedefine HAVE_LIBSSH2 1
 +
 +/* Define to 1 if libssh2 provides `libssh2_version'. */
 +#cmakedefine HAVE_LIBSSH2_VERSION 1
 +
 +/* Define to 1 if libssh2 provides `libssh2_init'. */
 +#cmakedefine HAVE_LIBSSH2_INIT 1
 +
 +/* Define to 1 if libssh2 provides `libssh2_exit'. */
 +#cmakedefine HAVE_LIBSSH2_EXIT 1
 +
 +/* Define to 1 if libssh2 provides `libssh2_scp_send64'. */
 +#cmakedefine HAVE_LIBSSH2_SCP_SEND64 1
 +
 +/* Define to 1 if libssh2 provides `libssh2_session_handshake'. */
 +#cmakedefine HAVE_LIBSSH2_SESSION_HANDSHAKE 1
 +
 +/* Define to 1 if you have the <libssh2.h> header file. */
 +#cmakedefine HAVE_LIBSSH2_H 1
 +
 +/* Define to 1 if you have the `ssl' library (-lssl). */
 +#cmakedefine HAVE_LIBSSL 1
 +
 +/* if zlib is available */
 +#cmakedefine HAVE_LIBZ 1
 +
 +/* Define to 1 if you have the <limits.h> header file. */
 +#cmakedefine HAVE_LIMITS_H 1
 +
 +/* if your compiler supports LL */
 +#cmakedefine HAVE_LL 1
 +
 +/* Define to 1 if you have the <locale.h> header file. */
 +#cmakedefine HAVE_LOCALE_H 1
 +
 +/* Define to 1 if you have a working localtime_r function. */
 +#cmakedefine HAVE_LOCALTIME_R 1
 +
 +/* Define to 1 if the compiler supports the 'long long' data type. */
 +#cmakedefine HAVE_LONGLONG 1
 +
 +/* Define to 1 if you have the malloc.h header file. */
 +#cmakedefine HAVE_MALLOC_H 1
 +
 +/* Define to 1 if you have the <memory.h> header file. */
 +#cmakedefine HAVE_MEMORY_H 1
 +
 +/* Define to 1 if you have the MSG_NOSIGNAL flag. */
 +#cmakedefine HAVE_MSG_NOSIGNAL 1
 +
 +/* Define to 1 if you have the <netdb.h> header file. */
 +#cmakedefine HAVE_NETDB_H 1
 +
 +/* Define to 1 if you have the <netinet/in.h> header file. */
 +#cmakedefine HAVE_NETINET_IN_H 1
 +
 +/* Define to 1 if you have the <netinet/tcp.h> header file. */
 +#cmakedefine HAVE_NETINET_TCP_H 1
 +
 +/* Define to 1 if you have the <net/if.h> header file. */
 +#cmakedefine HAVE_NET_IF_H 1
 +
 +/* Define to 1 if NI_WITHSCOPEID exists and works. */
 +#cmakedefine HAVE_NI_WITHSCOPEID 1
 +
 +/* if you have an old MIT gssapi library, lacking GSS_C_NT_HOSTBASED_SERVICE */
 +#cmakedefine HAVE_OLD_GSSMIT 1
 +
 +/* Define to 1 if you have the <openssl/crypto.h> header file. */
 +#cmakedefine HAVE_OPENSSL_CRYPTO_H 1
 +
 +/* Define to 1 if you have the <openssl/engine.h> header file. */
 +#cmakedefine HAVE_OPENSSL_ENGINE_H 1
 +
 +/* Define to 1 if you have the <openssl/err.h> header file. */
 +#cmakedefine HAVE_OPENSSL_ERR_H 1
 +
 +/* Define to 1 if you have the <openssl/pem.h> header file. */
 +#cmakedefine HAVE_OPENSSL_PEM_H 1
 +
 +/* Define to 1 if you have the <openssl/pkcs12.h> header file. */
 +#cmakedefine HAVE_OPENSSL_PKCS12_H 1
 +
 +/* Define to 1 if you have the <openssl/rsa.h> header file. */
 +#cmakedefine HAVE_OPENSSL_RSA_H 1
 +
 +/* Define to 1 if you have the <openssl/ssl.h> header file. */
 +#cmakedefine HAVE_OPENSSL_SSL_H 1
 +
 +/* Define to 1 if you have the <openssl/x509.h> header file. */
 +#cmakedefine HAVE_OPENSSL_X509_H 1
 +
 +/* Define to 1 if you have the <pem.h> header file. */
 +#cmakedefine HAVE_PEM_H 1
 +
 +/* Define to 1 if you have the `perror' function. */
 +#cmakedefine HAVE_PERROR 1
 +
 +/* Define to 1 if you have the `pipe' function. */
 +#cmakedefine HAVE_PIPE 1
 +
 +/* Define to 1 if you have a working poll function. */
 +#cmakedefine HAVE_POLL 1
 +
 +/* If you have a fine poll */
 +#cmakedefine HAVE_POLL_FINE 1
 +
 +/* Define to 1 if you have the <poll.h> header file. */
 +#cmakedefine HAVE_POLL_H 1
 +
 +/* Define to 1 if you have a working POSIX-style strerror_r function. */
 +#cmakedefine HAVE_POSIX_STRERROR_R 1
 +
 +/* Define to 1 if you have the <pthread.h> header file */
 +#cmakedefine HAVE_PTHREAD_H 1
 +
 +/* Define to 1 if you have the <pwd.h> header file. */
 +#cmakedefine HAVE_PWD_H 1
 +
 +/* Define to 1 if you have the `RAND_egd' function. */
 +#cmakedefine HAVE_RAND_EGD 1
 +
 +/* Define to 1 if you have the `RAND_screen' function. */
 +#cmakedefine HAVE_RAND_SCREEN 1
 +
 +/* Define to 1 if you have the `RAND_status' function. */
 +#cmakedefine HAVE_RAND_STATUS 1
 +
 +/* Define to 1 if you have the recv function. */
 +#cmakedefine HAVE_RECV 1
 +
 +/* Define to 1 if you have the recvfrom function. */
 +#cmakedefine HAVE_RECVFROM 1
 +
 +/* Define to 1 if you have the <rsa.h> header file. */
 +#cmakedefine HAVE_RSA_H 1
 +
 +/* Define to 1 if you have the select function. */
 +#cmakedefine HAVE_SELECT 1
 +
 +/* Define to 1 if you have the send function. */
 +#cmakedefine HAVE_SEND 1
 +
 +/* Define to 1 if you have the 'fsetxattr' function. */
 +#cmakedefine HAVE_FSETXATTR 1
 +
 +/* fsetxattr() takes 5 args */
 +#cmakedefine HAVE_FSETXATTR_5 1
 +
 +/* fsetxattr() takes 6 args */
 +#cmakedefine HAVE_FSETXATTR_6 1
 +
 +/* Define to 1 if you have the <setjmp.h> header file. */
 +#cmakedefine HAVE_SETJMP_H 1
 +
 +/* Define to 1 if you have the `setlocale' function. */
 +#cmakedefine HAVE_SETLOCALE 1
 +
 +/* Define to 1 if you have the `setmode' function. */
 +#cmakedefine HAVE_SETMODE 1
 +
 +/* Define to 1 if you have the `setrlimit' function. */
 +#cmakedefine HAVE_SETRLIMIT 1
 +
 +/* Define to 1 if you have the setsockopt function. */
 +#cmakedefine HAVE_SETSOCKOPT 1
 +
 +/* Define to 1 if you have a working setsockopt SO_NONBLOCK function. */
 +#cmakedefine HAVE_SETSOCKOPT_SO_NONBLOCK 1
 +
 +/* Define to 1 if you have the <sgtty.h> header file. */
 +#cmakedefine HAVE_SGTTY_H 1
 +
 +/* Define to 1 if you have the sigaction function. */
 +#cmakedefine HAVE_SIGACTION 1
 +
 +/* Define to 1 if you have the siginterrupt function. */
 +#cmakedefine HAVE_SIGINTERRUPT 1
 +
 +/* Define to 1 if you have the signal function. */
 +#cmakedefine HAVE_SIGNAL 1
 +
 +/* Define to 1 if you have the <signal.h> header file. */
 +#cmakedefine HAVE_SIGNAL_H 1
 +
 +/* Define to 1 if you have the sigsetjmp function or macro. */
 +#cmakedefine HAVE_SIGSETJMP 1
 +
 +/* Define to 1 if sig_atomic_t is an available typedef. */
 +#cmakedefine HAVE_SIG_ATOMIC_T 1
 +
 +/* Define to 1 if sig_atomic_t is already defined as volatile. */
 +#cmakedefine HAVE_SIG_ATOMIC_T_VOLATILE 1
 +
 +/* Define to 1 if struct sockaddr_in6 has the sin6_scope_id member */
 +#cmakedefine HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1
 +
 +/* Define to 1 if you have the `socket' function. */
 +#cmakedefine HAVE_SOCKET 1
 +
 +/* Define to 1 if you have the `SSL_get_shutdown' function. */
 +#cmakedefine HAVE_SSL_GET_SHUTDOWN 1
 +
 +/* Define to 1 if you have the <ssl.h> header file. */
 +#cmakedefine HAVE_SSL_H 1
 +
 +/* Define to 1 if you have the <stdbool.h> header file. */
 +#cmakedefine HAVE_STDBOOL_H 1
 +
 +/* Define to 1 if you have the <stdint.h> header file. */
 +#cmakedefine HAVE_STDINT_H 1
 +
 +/* Define to 1 if you have the <stdio.h> header file. */
 +#cmakedefine HAVE_STDIO_H 1
 +
 +/* Define to 1 if you have the <stdlib.h> header file. */
 +#cmakedefine HAVE_STDLIB_H 1
 +
 +/* Define to 1 if you have the strcasecmp function. */
 +#cmakedefine HAVE_STRCASECMP 1
 +
 +/* Define to 1 if you have the strcasestr function. */
 +#cmakedefine HAVE_STRCASESTR 1
 +
 +/* Define to 1 if you have the strcmpi function. */
 +#cmakedefine HAVE_STRCMPI 1
 +
 +/* Define to 1 if you have the strdup function. */
 +#cmakedefine HAVE_STRDUP 1
 +
 +/* Define to 1 if you have the strerror_r function. */
 +#cmakedefine HAVE_STRERROR_R 1
 +
 +/* Define to 1 if you have the stricmp function. */
 +#cmakedefine HAVE_STRICMP 1
 +
 +/* Define to 1 if you have the <strings.h> header file. */
 +#cmakedefine HAVE_STRINGS_H 1
 +
 +/* Define to 1 if you have the <string.h> header file. */
 +#cmakedefine HAVE_STRING_H 1
 +
 +/* Define to 1 if you have the strlcat function. */
 +#cmakedefine HAVE_STRLCAT 1
 +
 +/* Define to 1 if you have the `strlcpy' function. */
 +#cmakedefine HAVE_STRLCPY 1
 +
 +/* Define to 1 if you have the strncasecmp function. */
 +#cmakedefine HAVE_STRNCASECMP 1
 +
 +/* Define to 1 if you have the strncmpi function. */
 +#cmakedefine HAVE_STRNCMPI 1
 +
 +/* Define to 1 if you have the strnicmp function. */
 +#cmakedefine HAVE_STRNICMP 1
 +
 +/* Define to 1 if you have the <stropts.h> header file. */
 +#cmakedefine HAVE_STROPTS_H 1
 +
 +/* Define to 1 if you have the strstr function. */
 +#cmakedefine HAVE_STRSTR 1
 +
 +/* Define to 1 if you have the strtok_r function. */
 +#cmakedefine HAVE_STRTOK_R 1
 +
 +/* Define to 1 if you have the strtoll function. */
 +#cmakedefine HAVE_STRTOLL 1
 +
 +/* if struct sockaddr_storage is defined */
 +#cmakedefine HAVE_STRUCT_SOCKADDR_STORAGE 1
 +
 +/* Define to 1 if you have the timeval struct. */
 +#cmakedefine HAVE_STRUCT_TIMEVAL 1
 +
 +/* Define to 1 if you have the <sys/filio.h> header file. */
 +#cmakedefine HAVE_SYS_FILIO_H 1
 +
 +/* Define to 1 if you have the <sys/ioctl.h> header file. */
 +#cmakedefine HAVE_SYS_IOCTL_H 1
 +
 +/* Define to 1 if you have the <sys/param.h> header file. */
 +#cmakedefine HAVE_SYS_PARAM_H 1
 +
 +/* Define to 1 if you have the <sys/poll.h> header file. */
 +#cmakedefine HAVE_SYS_POLL_H 1
 +
 +/* Define to 1 if you have the <sys/resource.h> header file. */
 +#cmakedefine HAVE_SYS_RESOURCE_H 1
 +
 +/* Define to 1 if you have the <sys/select.h> header file. */
 +#cmakedefine HAVE_SYS_SELECT_H 1
 +
 +/* Define to 1 if you have the <sys/socket.h> header file. */
 +#cmakedefine HAVE_SYS_SOCKET_H 1
 +
 +/* Define to 1 if you have the <sys/sockio.h> header file. */
 +#cmakedefine HAVE_SYS_SOCKIO_H 1
 +
 +/* Define to 1 if you have the <sys/stat.h> header file. */
 +#cmakedefine HAVE_SYS_STAT_H 1
 +
 +/* Define to 1 if you have the <sys/time.h> header file. */
 +#cmakedefine HAVE_SYS_TIME_H 1
 +
 +/* Define to 1 if you have the <sys/types.h> header file. */
 +#cmakedefine HAVE_SYS_TYPES_H 1
 +
 +/* Define to 1 if you have the <sys/uio.h> header file. */
 +#cmakedefine HAVE_SYS_UIO_H 1
 +
 +/* Define to 1 if you have the <sys/un.h> header file. */
 +#cmakedefine HAVE_SYS_UN_H 1
 +
 +/* Define to 1 if you have the <sys/utime.h> header file. */
 +#cmakedefine HAVE_SYS_UTIME_H 1
 +
 +/* Define to 1 if you have the <termios.h> header file. */
 +#cmakedefine HAVE_TERMIOS_H 1
 +
 +/* Define to 1 if you have the <termio.h> header file. */
 +#cmakedefine HAVE_TERMIO_H 1
 +
 +/* Define to 1 if you have the <time.h> header file. */
 +#cmakedefine HAVE_TIME_H 1
 +
 +/* Define to 1 if you have the <tld.h> header file. */
 +#cmakedefine HAVE_TLD_H 1
 +
 +/* Define to 1 if you have the `tld_strerror' function. */
 +#cmakedefine HAVE_TLD_STRERROR 1
 +
 +/* Define to 1 if you have the `uname' function. */
 +#cmakedefine HAVE_UNAME 1
 +
 +/* Define to 1 if you have the <unistd.h> header file. */
 +#cmakedefine HAVE_UNISTD_H 1
 +
 +/* Define to 1 if you have the `utime' function. */
 +#cmakedefine HAVE_UTIME 1
 +
 +/* Define to 1 if you have the <utime.h> header file. */
 +#cmakedefine HAVE_UTIME_H 1
 +
 +/* Define to 1 if compiler supports C99 variadic macro style. */
 +#cmakedefine HAVE_VARIADIC_MACROS_C99 1
 +
 +/* Define to 1 if compiler supports old gcc variadic macro style. */
 +#cmakedefine HAVE_VARIADIC_MACROS_GCC 1
 +
 +/* Define to 1 if you have the winber.h header file. */
 +#cmakedefine HAVE_WINBER_H 1
 +
 +/* Define to 1 if you have the windows.h header file. */
 +#cmakedefine HAVE_WINDOWS_H 1
 +
 +/* Define to 1 if you have the winldap.h header file. */
 +#cmakedefine HAVE_WINLDAP_H 1
 +
 +/* Define to 1 if you have the winsock2.h header file. */
 +#cmakedefine HAVE_WINSOCK2_H 1
 +
 +/* Define to 1 if you have the winsock.h header file. */
 +#cmakedefine HAVE_WINSOCK_H 1
 +
 +/* Define this symbol if your OS supports changing the contents of argv */
 +#cmakedefine HAVE_WRITABLE_ARGV 1
 +
 +/* Define to 1 if you have the writev function. */
 +#cmakedefine HAVE_WRITEV 1
 +
 +/* Define to 1 if you have the ws2tcpip.h header file. */
 +#cmakedefine HAVE_WS2TCPIP_H 1
 +
 +/* Define to 1 if you have the <x509.h> header file. */
 +#cmakedefine HAVE_X509_H 1
 +
 +/* Define if you have the <process.h> header file. */
 +#cmakedefine HAVE_PROCESS_H 1
 +
 +/* if you have the zlib.h header file */
 +#cmakedefine HAVE_ZLIB_H 1
 +
 +/* Define to the sub-directory in which libtool stores uninstalled libraries.
 +   */
 +#cmakedefine LT_OBJDIR ${LT_OBJDIR}
 +
 +/* If you lack a fine basename() prototype */
 +#cmakedefine NEED_BASENAME_PROTO 1
 +
 +/* Define to 1 if you need the lber.h header file even with ldap.h */
 +#cmakedefine NEED_LBER_H 1
 +
 +/* Define to 1 if you need the malloc.h header file even with stdlib.h */
 +#cmakedefine NEED_MALLOC_H 1
 +
 +/* Define to 1 if _REENTRANT preprocessor symbol must be defined. */
 +#cmakedefine NEED_REENTRANT 1
 +
 +/* cpu-machine-OS */
 +#cmakedefine OS ${OS}
 +
 +/* Name of package */
 +#cmakedefine PACKAGE ${PACKAGE}
 +
 +/* Define to the address where bug reports for this package should be sent. */
 +#cmakedefine PACKAGE_BUGREPORT ${PACKAGE_BUGREPORT}
 +
 +/* Define to the full name of this package. */
 +#cmakedefine PACKAGE_NAME ${PACKAGE_NAME}
 +
 +/* Define to the full name and version of this package. */
 +#cmakedefine PACKAGE_STRING ${PACKAGE_STRING}
 +
 +/* Define to the one symbol short name of this package. */
 +#cmakedefine PACKAGE_TARNAME ${PACKAGE_TARNAME}
 +
 +/* Define to the version of this package. */
 +#cmakedefine PACKAGE_VERSION ${PACKAGE_VERSION}
 +
 +/* a suitable file to read random data from */
 +#cmakedefine RANDOM_FILE "${RANDOM_FILE}"
 +
 +/* Define to the type of arg 1 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG1 ${RECVFROM_TYPE_ARG1}
 +
 +/* Define to the type pointed by arg 2 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG2 ${RECVFROM_TYPE_ARG2}
 +
 +/* Define to 1 if the type pointed by arg 2 for recvfrom is void. */
 +#cmakedefine RECVFROM_TYPE_ARG2_IS_VOID 1
 +
 +/* Define to the type of arg 3 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG3 ${RECVFROM_TYPE_ARG3}
 +
 +/* Define to the type of arg 4 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG4 ${RECVFROM_TYPE_ARG4}
 +
 +/* Define to the type pointed by arg 5 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG5 ${RECVFROM_TYPE_ARG5}
 +
 +/* Define to 1 if the type pointed by arg 5 for recvfrom is void. */
 +#cmakedefine RECVFROM_TYPE_ARG5_IS_VOID 1
 +
 +/* Define to the type pointed by arg 6 for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_ARG6 ${RECVFROM_TYPE_ARG6}
 +
 +/* Define to 1 if the type pointed by arg 6 for recvfrom is void. */
 +#cmakedefine RECVFROM_TYPE_ARG6_IS_VOID 1
 +
 +/* Define to the function return type for recvfrom. */
 +#cmakedefine RECVFROM_TYPE_RETV ${RECVFROM_TYPE_RETV}
 +
 +/* Define to the type of arg 1 for recv. */
 +#cmakedefine RECV_TYPE_ARG1 ${RECV_TYPE_ARG1}
 +
 +/* Define to the type of arg 2 for recv. */
 +#cmakedefine RECV_TYPE_ARG2 ${RECV_TYPE_ARG2}
 +
 +/* Define to the type of arg 3 for recv. */
 +#cmakedefine RECV_TYPE_ARG3 ${RECV_TYPE_ARG3}
 +
 +/* Define to the type of arg 4 for recv. */
 +#cmakedefine RECV_TYPE_ARG4 ${RECV_TYPE_ARG4}
 +
 +/* Define to the function return type for recv. */
 +#cmakedefine RECV_TYPE_RETV ${RECV_TYPE_RETV}
 +
 +/* Define as the return type of signal handlers (`int' or `void'). */
 +#cmakedefine RETSIGTYPE ${RETSIGTYPE}
 +
 +/* Define to the type qualifier of arg 5 for select. */
 +#cmakedefine SELECT_QUAL_ARG5 ${SELECT_QUAL_ARG5}
 +
 +/* Define to the type of arg 1 for select. */
 +#cmakedefine SELECT_TYPE_ARG1 ${SELECT_TYPE_ARG1}
 +
 +/* Define to the type of args 2, 3 and 4 for select. */
 +#cmakedefine SELECT_TYPE_ARG234 ${SELECT_TYPE_ARG234}
 +
 +/* Define to the type of arg 5 for select. */
 +#cmakedefine SELECT_TYPE_ARG5 ${SELECT_TYPE_ARG5}
 +
 +/* Define to the function return type for select. */
 +#cmakedefine SELECT_TYPE_RETV ${SELECT_TYPE_RETV}
 +
 +/* Define to the type qualifier of arg 2 for send. */
 +#cmakedefine SEND_QUAL_ARG2 ${SEND_QUAL_ARG2}
 +
 +/* Define to the type of arg 1 for send. */
 +#cmakedefine SEND_TYPE_ARG1 ${SEND_TYPE_ARG1}
 +
 +/* Define to the type of arg 2 for send. */
 +#cmakedefine SEND_TYPE_ARG2 ${SEND_TYPE_ARG2}
 +
 +/* Define to the type of arg 3 for send. */
 +#cmakedefine SEND_TYPE_ARG3 ${SEND_TYPE_ARG3}
 +
 +/* Define to the type of arg 4 for send. */
 +#cmakedefine SEND_TYPE_ARG4 ${SEND_TYPE_ARG4}
 +
 +/* Define to the function return type for send. */
 +#cmakedefine SEND_TYPE_RETV ${SEND_TYPE_RETV}
 +
 +/* The size of `int', as computed by sizeof. */
 + at SIZEOF_INT_CODE@
 +
 +/* The size of `short', as computed by sizeof. */
 + at SIZEOF_SHORT_CODE@
 +
 +/* The size of `long', as computed by sizeof. */
 + at SIZEOF_LONG_CODE@
 +
 +/* The size of `off_t', as computed by sizeof. */
 + at SIZEOF_OFF_T_CODE@
 +
++/* The size of `curl_off_t', as computed by sizeof. */
++#cmakedefine SIZEOF_CURL_OFF_T ${SIZEOF_CURL_OFF_T}
++
 +/* The size of `size_t', as computed by sizeof. */
 + at SIZEOF_SIZE_T_CODE@
 +
 +/* The size of `ssize_t', as computed by sizeof. */
 + at SIZEOF_SSIZE_T_CODE@
 +
 +/* The size of `time_t', as computed by sizeof. */
 + at SIZEOF_TIME_T_CODE@
 +
 +/* Define to 1 if you have the ANSI C header files. */
 +#cmakedefine STDC_HEADERS 1
 +
 +/* Define to the type of arg 3 for strerror_r. */
 +#cmakedefine STRERROR_R_TYPE_ARG3 ${STRERROR_R_TYPE_ARG3}
 +
 +/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
 +#cmakedefine TIME_WITH_SYS_TIME 1
 +
 +/* Define if you want to enable c-ares support */
 +#cmakedefine USE_ARES 1
 +
 +/* Define if you want to enable POSIX threaded DNS lookup */
 +#cmakedefine USE_THREADS_POSIX 1
 +
 +/* Define if you want to enable WIN32 threaded DNS lookup */
 +#cmakedefine USE_THREADS_WIN32 1
 +
 +/* Define to disable non-blocking sockets. */
 +#cmakedefine USE_BLOCKING_SOCKETS 1
 +
 +/* if GnuTLS is enabled */
 +#cmakedefine USE_GNUTLS 1
 +
 +/* if PolarSSL is enabled */
 +#cmakedefine USE_POLARSSL 1
 +
 +/* if DarwinSSL is enabled */
 +#cmakedefine USE_DARWINSSL 1
 +
 +/* if mbedTLS is enabled */
 +#cmakedefine USE_MBEDTLS 1
 +
 +/* if libSSH2 is in use */
 +#cmakedefine USE_LIBSSH2 1
 +
 +/* If you want to build curl with the built-in manual */
 +#cmakedefine USE_MANUAL 1
 +
 +/* if NSS is enabled */
 +#cmakedefine USE_NSS 1
 +
 +/* if you want to use OpenLDAP code instead of legacy ldap implementation */
 +#cmakedefine USE_OPENLDAP 1
 +
 +/* if OpenSSL is in use */
 +#cmakedefine USE_OPENSSL 1
 +
 +/* to enable NGHTTP2  */
 +#cmakedefine USE_NGHTTP2 1
 +
 +/* if Unix domain sockets are enabled  */
 +#cmakedefine USE_UNIX_SOCKETS
 +
 +/* to enable SSPI support */
 +#cmakedefine USE_WINDOWS_SSPI 1
 +
 +/* to enable Windows SSL  */
 +#cmakedefine USE_SCHANNEL 1
 +
 +/* Define to 1 if using yaSSL in OpenSSL compatibility mode. */
 +#cmakedefine USE_YASSLEMUL 1
 +
 +/* Version number of package */
 +#cmakedefine VERSION ${VERSION}
 +
- /* Define to avoid automatic inclusion of winsock.h */
- #cmakedefine WIN32_LEAN_AND_MEAN 1
- 
 +/* Define to 1 if OS is AIX. */
 +#ifndef _ALL_SOURCE
 +#  undef _ALL_SOURCE
 +#endif
 +
 +/* Number of bits in a file offset, on hosts where this is settable. */
 +#cmakedefine _FILE_OFFSET_BITS ${_FILE_OFFSET_BITS}
 +
 +/* Define for large files, on AIX-style hosts. */
 +#cmakedefine _LARGE_FILES ${_LARGE_FILES}
 +
 +/* define this if you need it to compile thread-safe code */
 +#cmakedefine _THREAD_SAFE ${_THREAD_SAFE}
 +
 +/* Define to empty if `const' does not conform to ANSI C. */
 +#cmakedefine const ${const}
 +
 +/* Type to use in place of in_addr_t when system does not provide it. */
 +#cmakedefine in_addr_t ${in_addr_t}
 +
 +/* Define to `__inline__' or `__inline' if that's what the C compiler
 +   calls it, or to nothing if 'inline' is not supported under any name.  */
 +#ifndef __cplusplus
 +#undef inline
 +#endif
 +
 +/* Define to `unsigned int' if <sys/types.h> does not define. */
 +#cmakedefine size_t ${size_t}
 +
 +/* the signed version of size_t */
 +#ifndef SIZEOF_SSIZE_T
 +# if SIZEOF_LONG == SIZEOF_SIZE_T
 +   typedef long ssize_t;
 +# elif SIZEOF_LONG_LONG == SIZEOF_SIZE_T
 +   typedef long long ssize_t;
 +# elif SIZEOF___INT64 == SIZEOF_SIZE_T
 +   typedef __int64 ssize_t;
 +# else
 +   typedef int ssize_t;
 +# endif
 +#endif
diff --cc Utilities/cmcurl/lib/curl_setup.h
index a6268ad,0000000..5880dc0
mode 100644,000000..100644
--- a/Utilities/cmcurl/lib/curl_setup.h
+++ b/Utilities/cmcurl/lib/curl_setup.h
@@@ -1,773 -1,0 +1,777 @@@
 +#ifndef HEADER_CURL_SETUP_H
 +#define HEADER_CURL_SETUP_H
 +/***************************************************************************
 + *                                  _   _ ____  _
 + *  Project                     ___| | | |  _ \| |
 + *                             / __| | | | |_) | |
 + *                            | (__| |_| |  _ <| |___
 + *                             \___|\___/|_| \_\_____|
 + *
-  * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
++ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 + *
 + * This software is licensed as described in the file COPYING, which
 + * you should have received as part of this distribution. The terms
 + * are also available at https://curl.haxx.se/docs/copyright.html.
 + *
 + * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 + * copies of the Software, and permit persons to whom the Software is
 + * furnished to do so, under the terms of the COPYING file.
 + *
 + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 + * KIND, either express or implied.
 + *
 + ***************************************************************************/
 +
++#if defined(BUILDING_LIBCURL) && !defined(CURL_NO_OLDIES)
++#define CURL_NO_OLDIES
++#endif
++
 +/*
 + * Define WIN32 when build target is Win32 API
 + */
 +
 +#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) && \
 +    !defined(__SYMBIAN32__)
 +#define WIN32
 +#endif
 +
++#ifdef WIN32
++/*
++ * Don't include unneeded stuff in Windows headers to avoid compiler
++ * warnings and macro clashes.
++ * Make sure to define this macro before including any Windows headers.
++ */
++#  ifndef WIN32_LEAN_AND_MEAN
++#    define WIN32_LEAN_AND_MEAN
++#  endif
++#endif
++
 +/*
 + * Include configuration script results or hand-crafted
 + * configuration file for platforms which lack config tool.
 + */
 +
 +#ifdef HAVE_CONFIG_H
 +
 +#include "curl_config.h"
 +
 +#else /* HAVE_CONFIG_H */
 +
 +#ifdef _WIN32_WCE
 +#  include "config-win32ce.h"
 +#else
 +#  ifdef WIN32
 +#    include "config-win32.h"
 +#  endif
 +#endif
 +
 +#if defined(macintosh) && defined(__MRC__)
 +#  include "config-mac.h"
 +#endif
 +
 +#ifdef __riscos__
 +#  include "config-riscos.h"
 +#endif
 +
 +#ifdef __AMIGA__
 +#  include "config-amigaos.h"
 +#endif
 +
 +#ifdef __SYMBIAN32__
 +#  include "config-symbian.h"
 +#endif
 +
 +#ifdef __OS400__
 +#  include "config-os400.h"
 +#endif
 +
 +#ifdef TPF
 +#  include "config-tpf.h"
 +#endif
 +
 +#ifdef __VXWORKS__
 +#  include "config-vxworks.h"
 +#endif
 +
 +#endif /* HAVE_CONFIG_H */
 +
 +#if defined(_MSC_VER)
 +# pragma warning(push,1)
 +#endif
 +
 +/* ================================================================ */
 +/* Definition of preprocessor macros/symbols which modify compiler  */
 +/* behavior or generated code characteristics must be done here,   */
 +/* as appropriate, before any system header file is included. It is */
 +/* also possible to have them defined in the config file included   */
 +/* before this point. As a result of all this we frown inclusion of */
 +/* system header files in our config files, avoid this at any cost. */
 +/* ================================================================ */
 +
 +/*
 + * AIX 4.3 and newer needs _THREAD_SAFE defined to build
 + * proper reentrant code. Others may also need it.
 + */
 +
 +#ifdef NEED_THREAD_SAFE
 +#  ifndef _THREAD_SAFE
 +#    define _THREAD_SAFE
 +#  endif
 +#endif
 +
 +/*
 + * Tru64 needs _REENTRANT set for a few function prototypes and
 + * things to appear in the system header files. Unixware needs it
 + * to build proper reentrant code. Others may also need it.
 + */
 +
 +#ifdef NEED_REENTRANT
 +#  ifndef _REENTRANT
 +#    define _REENTRANT
 +#  endif
 +#endif
 +
 +/* Solaris needs this to get a POSIX-conformant getpwuid_r */
 +#if defined(sun) || defined(__sun)
 +#  ifndef _POSIX_PTHREAD_SEMANTICS
 +#    define _POSIX_PTHREAD_SEMANTICS 1
 +#  endif
 +#endif
 +
 +/* ================================================================ */
 +/*  If you need to include a system header file for your platform,  */
 +/*  please, do it beyond the point further indicated in this file.  */
 +/* ================================================================ */
 +
 +#include <curl/curl.h>
 +
- /*
-  * Ensure that no one is using the old SIZEOF_CURL_OFF_T macro
-  */
- 
- #ifdef SIZEOF_CURL_OFF_T
- #  error "SIZEOF_CURL_OFF_T shall not be defined!"
-    Error Compilation_aborted_SIZEOF_CURL_OFF_T_shall_not_be_defined
- #endif
++#define CURL_SIZEOF_CURL_OFF_T SIZEOF_CURL_OFF_T
 +
 +/*
 + * Disable other protocols when http is the only one desired.
 + */
 +
 +#ifdef HTTP_ONLY
 +#  ifndef CURL_DISABLE_TFTP
 +#    define CURL_DISABLE_TFTP
 +#  endif
 +#  ifndef CURL_DISABLE_FTP
 +#    define CURL_DISABLE_FTP
 +#  endif
 +#  ifndef CURL_DISABLE_LDAP
 +#    define CURL_DISABLE_LDAP
 +#  endif
 +#  ifndef CURL_DISABLE_TELNET
 +#    define CURL_DISABLE_TELNET
 +#  endif
 +#  ifndef CURL_DISABLE_DICT
 +#    define CURL_DISABLE_DICT
 +#  endif
 +#  ifndef CURL_DISABLE_FILE
 +#    define CURL_DISABLE_FILE
 +#  endif
 +#  ifndef CURL_DISABLE_RTSP
 +#    define CURL_DISABLE_RTSP
 +#  endif
 +#  ifndef CURL_DISABLE_POP3
 +#    define CURL_DISABLE_POP3
 +#  endif
 +#  ifndef CURL_DISABLE_IMAP
 +#    define CURL_DISABLE_IMAP
 +#  endif
 +#  ifndef CURL_DISABLE_SMTP
 +#    define CURL_DISABLE_SMTP
 +#  endif
- #  ifndef CURL_DISABLE_RTMP
- #    define CURL_DISABLE_RTMP
- #  endif
 +#  ifndef CURL_DISABLE_GOPHER
 +#    define CURL_DISABLE_GOPHER
 +#  endif
 +#  ifndef CURL_DISABLE_SMB
 +#    define CURL_DISABLE_SMB
 +#  endif
 +#endif
 +
 +/*
 + * When http is disabled rtsp is not supported.
 + */
 +
 +#if defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_RTSP)
 +#  define CURL_DISABLE_RTSP
 +#endif
 +
 +/* ================================================================ */
 +/* No system header file shall be included in this file before this */
- /* point. The only allowed ones are those included from curlbuild.h */
++/* point. The only allowed ones are those included from curl/system.h */
 +/* ================================================================ */
 +
 +/*
 + * OS/400 setup file includes some system headers.
 + */
 +
 +#ifdef __OS400__
 +#  include "setup-os400.h"
 +#endif
 +
 +/*
 + * VMS setup file includes some system headers.
 + */
 +
 +#ifdef __VMS
 +#  include "setup-vms.h"
 +#endif
 +
 +/*
 + * Use getaddrinfo to resolve the IPv4 address literal. If the current network
 + * interface doesn’t support IPv4, but supports IPv6, NAT64, and DNS64,
 + * performing this task will result in a synthesized IPv6 address.
 + */
 +#ifdef  __APPLE__
 +#define USE_RESOLVE_ON_IPS 1
 +#endif
 +
 +/*
 + * Include header files for windows builds before redefining anything.
 + * Use this preprocessor block only to include or exclude windows.h,
 + * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
 + * to any other further and independent block.  Under Cygwin things work
 + * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
 + * never be included when __CYGWIN__ is defined.  configure script takes
 + * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H,
 + * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined.
 + */
 +
 +#ifdef HAVE_WINDOWS_H
 +#  if defined(UNICODE) && !defined(_UNICODE)
 +#    define _UNICODE
 +#  endif
 +#  if defined(_UNICODE) && !defined(UNICODE)
 +#    define UNICODE
 +#  endif
- #  ifndef WIN32_LEAN_AND_MEAN
- #    define WIN32_LEAN_AND_MEAN
- #  endif
 +#  include <windows.h>
 +#  ifdef HAVE_WINSOCK2_H
 +#    include <winsock2.h>
 +#    ifdef HAVE_WS2TCPIP_H
 +#      include <ws2tcpip.h>
 +#    endif
 +#  else
 +#    ifdef HAVE_WINSOCK_H
 +#      include <winsock.h>
 +#    endif
 +#  endif
 +#  include <tchar.h>
 +#  ifdef UNICODE
 +     typedef wchar_t *(*curl_wcsdup_callback)(const wchar_t *str);
 +#  endif
 +#endif
 +
 +/*
 + * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else
 + * define USE_WINSOCK to 1 if we have and use WINSOCK  API, else
 + * undefine USE_WINSOCK.
 + */
 +
 +#undef USE_WINSOCK
 +
 +#ifdef HAVE_WINSOCK2_H
 +#  define USE_WINSOCK 2
 +#else
 +#  ifdef HAVE_WINSOCK_H
 +#    define USE_WINSOCK 1
 +#  endif
 +#endif
 +
 +#ifdef USE_LWIPSOCK
 +#  include <lwip/init.h>
 +#  include <lwip/sockets.h>
 +#  include <lwip/netdb.h>
 +#endif
 +
 +#ifdef HAVE_EXTRA_STRICMP_H
 +#  include <extra/stricmp.h>
 +#endif
 +
 +#ifdef HAVE_EXTRA_STRDUP_H
 +#  include <extra/strdup.h>
 +#endif
 +
 +#ifdef TPF
 +#  include <strings.h>    /* for bzero, strcasecmp, and strncasecmp */
 +#  include <string.h>     /* for strcpy and strlen */
 +#  include <stdlib.h>     /* for rand and srand */
 +#  include <sys/socket.h> /* for select and ioctl*/
 +#  include <netdb.h>      /* for in_addr_t definition */
 +#  include <tpf/sysapi.h> /* for tpf_process_signals */
 +   /* change which select is used for libcurl */
 +#  define select(a,b,c,d,e) tpf_select_libcurl(a,b,c,d,e)
 +#endif
 +
 +#ifdef __VXWORKS__
 +#  include <sockLib.h>    /* for generic BSD socket functions */
 +#  include <ioLib.h>      /* for basic I/O interface functions */
 +#endif
 +
 +#ifdef __AMIGA__
 +#  ifndef __ixemul__
 +#    include <exec/types.h>
 +#    include <exec/execbase.h>
 +#    include <proto/exec.h>
 +#    include <proto/dos.h>
 +#    define select(a,b,c,d,e) WaitSelect(a,b,c,d,e,0)
 +#  endif
 +#endif
 +
 +#include <stdio.h>
 +#ifdef HAVE_ASSERT_H
 +#include <assert.h>
 +#endif
 +
 +#ifdef __TANDEM /* for nsr-tandem-nsk systems */
 +#include <floss.h>
 +#endif
 +
 +#ifndef STDC_HEADERS /* no standard C headers! */
 +#include <curl/stdcheaders.h>
 +#endif
 +
 +#ifdef __POCC__
 +#  include <sys/types.h>
 +#  include <unistd.h>
 +#  define sys_nerr EILSEQ
 +#endif
 +
 +/*
 + * Salford-C kludge section (mostly borrowed from wxWidgets).
 + */
 +#ifdef __SALFORDC__
 +  #pragma suppress 353             /* Possible nested comments */
 +  #pragma suppress 593             /* Define not used */
 +  #pragma suppress 61              /* enum has no name */
 +  #pragma suppress 106             /* unnamed, unused parameter */
 +  #include <clib.h>
 +#endif
 +
 +/* Default Windows file API selection.  */
 +#ifdef _WIN32
 +# if defined(_MSC_VER) && (_INTEGRAL_MAX_BITS >= 64)
 +#  define USE_WIN32_LARGE_FILES
 +# elif defined(__MINGW32__)
 +#  define USE_WIN32_LARGE_FILES
 +# else
 +#  define USE_WIN32_SMALL_FILES
 +# endif
 +#endif
 +
 +/*
 + * Large file (>2Gb) support using WIN32 functions.
 + */
 +
 +#ifdef USE_WIN32_LARGE_FILES
 +#  include <io.h>
 +#  include <sys/types.h>
 +#  include <sys/stat.h>
 +#  undef  lseek
 +#  define lseek(fdes,offset,whence)  _lseeki64(fdes, offset, whence)
 +#  undef  fstat
 +#  define fstat(fdes,stp)            _fstati64(fdes, stp)
 +#  undef  stat
 +#  define stat(fname,stp)            _stati64(fname, stp)
 +#  define struct_stat                struct _stati64
 +#  define LSEEK_ERROR                (__int64)-1
 +#endif
 +
 +/*
 + * Small file (<2Gb) support using WIN32 functions.
 + */
 +
 +#ifdef USE_WIN32_SMALL_FILES
 +#  include <io.h>
 +#  include <sys/types.h>
 +#  include <sys/stat.h>
 +#  ifndef _WIN32_WCE
 +#    undef  lseek
 +#    define lseek(fdes,offset,whence)  _lseek(fdes, (long)offset, whence)
 +#    define fstat(fdes,stp)            _fstat(fdes, stp)
 +#    define stat(fname,stp)            _stat(fname, stp)
 +#    define struct_stat                struct _stat
 +#  endif
 +#  define LSEEK_ERROR                (long)-1
 +#endif
 +
 +#ifndef struct_stat
 +#  define struct_stat struct stat
 +#endif
 +
 +#ifndef LSEEK_ERROR
 +#  define LSEEK_ERROR (off_t)-1
 +#endif
 +
 +/*
 + * Default sizeof(off_t) in case it hasn't been defined in config file.
 + */
 +
 +#ifndef SIZEOF_OFF_T
 +#  if defined(__VMS) && !defined(__VAX)
 +#    if defined(_LARGEFILE)
 +#      define SIZEOF_OFF_T 8
 +#    endif
 +#  elif defined(__OS400__) && defined(__ILEC400__)
 +#    if defined(_LARGE_FILES)
 +#      define SIZEOF_OFF_T 8
 +#    endif
 +#  elif defined(__MVS__) && defined(__IBMC__)
 +#    if defined(_LP64) || defined(_LARGE_FILES)
 +#      define SIZEOF_OFF_T 8
 +#    endif
 +#  elif defined(__370__) && defined(__IBMC__)
 +#    if defined(_LP64) || defined(_LARGE_FILES)
 +#      define SIZEOF_OFF_T 8
 +#    endif
 +#  endif
 +#  ifndef SIZEOF_OFF_T
 +#    define SIZEOF_OFF_T 4
 +#  endif
 +#endif
 +
 +/*
 + * Arg 2 type for gethostname in case it hasn't been defined in config file.
 + */
 +
 +#ifndef GETHOSTNAME_TYPE_ARG2
 +#  ifdef USE_WINSOCK
 +#    define GETHOSTNAME_TYPE_ARG2 int
 +#  else
 +#    define GETHOSTNAME_TYPE_ARG2 size_t
 +#  endif
 +#endif
 +
 +/* Below we define some functions. They should
 +
 +   4. set the SIGALRM signal timeout
 +   5. set dir/file naming defines
 +   */
 +
 +#ifdef WIN32
 +
 +#  define DIR_CHAR      "\\"
 +#  define DOT_CHAR      "_"
 +
 +#else /* WIN32 */
 +
 +#  ifdef MSDOS  /* Watt-32 */
 +
 +#    include <sys/ioctl.h>
 +#    define select(n,r,w,x,t) select_s(n,r,w,x,t)
 +#    define ioctl(x,y,z) ioctlsocket(x,y,(char *)(z))
 +#    include <tcp.h>
 +#    ifdef word
 +#      undef word
 +#    endif
 +#    ifdef byte
 +#      undef byte
 +#    endif
 +
 +#  endif /* MSDOS */
 +
 +#  ifdef __minix
 +     /* Minix 3 versions up to at least 3.1.3 are missing these prototypes */
 +     extern char *strtok_r(char *s, const char *delim, char **last);
 +     extern struct tm *gmtime_r(const time_t * const timep, struct tm *tmp);
 +#  endif
 +
 +#  define DIR_CHAR      "/"
 +#  ifndef DOT_CHAR
 +#    define DOT_CHAR      "."
 +#  endif
 +
 +#  ifdef MSDOS
 +#    undef DOT_CHAR
 +#    define DOT_CHAR      "_"
 +#  endif
 +
 +#  ifndef fileno /* sunos 4 have this as a macro! */
 +     int fileno(FILE *stream);
 +#  endif
 +
 +#endif /* WIN32 */
 +
 +/*
 + * msvc 6.0 requires PSDK in order to have INET6_ADDRSTRLEN
 + * defined in ws2tcpip.h as well as to provide IPv6 support.
 + * Does not apply if lwIP is used.
 + */
 +
 +#if defined(_MSC_VER) && !defined(__POCC__) && !defined(USE_LWIPSOCK)
 +#  if !defined(HAVE_WS2TCPIP_H) || \
 +     ((_MSC_VER < 1300) && !defined(INET6_ADDRSTRLEN))
 +#    undef HAVE_GETADDRINFO_THREADSAFE
 +#    undef HAVE_FREEADDRINFO
 +#    undef HAVE_GETADDRINFO
 +#    undef HAVE_GETNAMEINFO
 +#    undef ENABLE_IPV6
 +#  endif
 +#endif
 +
 +/* ---------------------------------------------------------------- */
 +/*             resolver specialty compile-time defines              */
 +/*         CURLRES_* defines to use in the host*.c sources          */
 +/* ---------------------------------------------------------------- */
 +
 +/*
 + * lcc-win32 doesn't have _beginthreadex(), lacks threads support.
 + */
 +
 +#if defined(__LCC__) && defined(WIN32)
 +#  undef USE_THREADS_POSIX
 +#  undef USE_THREADS_WIN32
 +#endif
 +
 +/*
 + * MSVC threads support requires a multi-threaded runtime library.
 + * _beginthreadex() is not available in single-threaded ones.
 + */
 +
 +#if defined(_MSC_VER) && !defined(__POCC__) && !defined(_MT)
 +#  undef USE_THREADS_POSIX
 +#  undef USE_THREADS_WIN32
 +#endif
 +
 +/*
 + * Mutually exclusive CURLRES_* definitions.
 + */
 +
 +#ifdef USE_ARES
 +#  define CURLRES_ASYNCH
 +#  define CURLRES_ARES
 +/* now undef the stock libc functions just to avoid them being used */
 +#  undef HAVE_GETADDRINFO
 +#  undef HAVE_FREEADDRINFO
 +#  undef HAVE_GETHOSTBYNAME
 +#elif defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
 +#  define CURLRES_ASYNCH
 +#  define CURLRES_THREADED
 +#else
 +#  define CURLRES_SYNCH
 +#endif
 +
 +#ifdef ENABLE_IPV6
 +#  define CURLRES_IPV6
 +#else
 +#  define CURLRES_IPV4
 +#endif
 +
 +/* ---------------------------------------------------------------- */
 +
 +/*
 + * When using WINSOCK, TELNET protocol requires WINSOCK2 API.
 + */
 +
 +#if defined(USE_WINSOCK) && (USE_WINSOCK != 2)
 +#  define CURL_DISABLE_TELNET 1
 +#endif
 +
 +/*
 + * msvc 6.0 does not have struct sockaddr_storage and
 + * does not define IPPROTO_ESP in winsock2.h. But both
 + * are available if PSDK is properly installed.
 + */
 +
 +#if defined(_MSC_VER) && !defined(__POCC__)
 +#  if !defined(HAVE_WINSOCK2_H) || ((_MSC_VER < 1300) && !defined(IPPROTO_ESP))
 +#    undef HAVE_STRUCT_SOCKADDR_STORAGE
 +#  endif
 +#endif
 +
 +/*
 + * Intentionally fail to build when using msvc 6.0 without PSDK installed.
 + * The brave of heart can circumvent this, defining ALLOW_MSVC6_WITHOUT_PSDK
 + * in lib/config-win32.h although absolutely discouraged and unsupported.
 + */
 +
 +#if defined(_MSC_VER) && !defined(__POCC__)
 +#  if !defined(HAVE_WINDOWS_H) || ((_MSC_VER < 1300) && !defined(_FILETIME_))
 +#    if !defined(ALLOW_MSVC6_WITHOUT_PSDK)
 +#      error MSVC 6.0 requires "February 2003 Platform SDK" a.k.a. \
 +             "Windows Server 2003 PSDK"
 +#    else
 +#      define CURL_DISABLE_LDAP 1
 +#    endif
 +#  endif
 +#endif
 +
 +#ifdef NETWARE
 +int netware_init(void);
 +#ifndef __NOVELL_LIBC__
 +#include <sys/bsdskt.h>
 +#include <sys/timeval.h>
 +#endif
 +#endif
 +
 +#if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && !defined(USE_WIN32_IDN)
 +/* The lib and header are present */
 +#define USE_LIBIDN2
 +#endif
 +
 +#if defined(USE_LIBIDN2) && defined(USE_WIN32_IDN)
 +#error "Both libidn2 and WinIDN are enabled, choose one."
 +#endif
 +
 +#ifndef SIZEOF_TIME_T
 +/* assume default size of time_t to be 32 bit */
 +#define SIZEOF_TIME_T 4
 +#endif
 +
 +#define LIBIDN_REQUIRED_VERSION "0.4.1"
 +
 +#if defined(USE_GNUTLS) || defined(USE_OPENSSL) || defined(USE_NSS) || \
 +    defined(USE_POLARSSL) || defined(USE_AXTLS) || defined(USE_MBEDTLS) || \
 +    defined(USE_CYASSL) || defined(USE_SCHANNEL) || \
 +    defined(USE_DARWINSSL) || defined(USE_GSKIT)
 +#define USE_SSL    /* SSL support has been enabled */
 +#endif
 +
 +/* Single point where USE_SPNEGO definition might be defined */
 +#if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
 +    (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
 +#define USE_SPNEGO
 +#endif
 +
 +/* Single point where USE_KERBEROS5 definition might be defined */
 +#if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
 +    (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
 +#define USE_KERBEROS5
 +#endif
 +
 +/* Single point where USE_NTLM definition might be defined */
 +#if !defined(CURL_DISABLE_NTLM) && !defined(CURL_DISABLE_CRYPTO_AUTH)
 +#if defined(USE_OPENSSL) || defined(USE_WINDOWS_SSPI) || \
 +    defined(USE_GNUTLS) || defined(USE_NSS) || defined(USE_DARWINSSL) || \
 +    defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO) || \
 +    defined(USE_MBEDTLS)
 +
 +#define USE_NTLM
 +
 +#  if defined(USE_MBEDTLS)
 +/* Get definition of MBEDTLS_MD4_C */
 +#  include <mbedtls/md4.h>
 +#  endif
 +
 +#endif
 +#endif
 +
- /* non-configure builds may define CURL_WANTS_CA_BUNDLE_ENV */
- #if defined(CURL_WANTS_CA_BUNDLE_ENV) && !defined(CURL_CA_BUNDLE)
- #define CURL_CA_BUNDLE getenv("CURL_CA_BUNDLE")
++#ifdef CURL_WANTS_CA_BUNDLE_ENV
++#error "No longer supported. Set CURLOPT_CAINFO at runtime instead."
 +#endif
 +
 +/*
 + * Provide a mechanism to silence picky compilers, such as gcc 4.6+.
 + * Parameters should of course normally not be unused, but for example when
 + * we have multiple implementations of the same interface it may happen.
 + */
 +
 +#if defined(__GNUC__) && ((__GNUC__ >= 3) || \
 +  ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 7)))
 +#  define UNUSED_PARAM __attribute__((__unused__))
 +#  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
 +#else
 +#  define UNUSED_PARAM /*NOTHING*/
 +#  define WARN_UNUSED_RESULT
 +#endif
 +
 +/*
 + * Include macros and defines that should only be processed once.
 + */
 +
 +#ifndef HEADER_CURL_SETUP_ONCE_H
 +#include "curl_setup_once.h"
 +#endif
 +
 +/*
 + * Definition of our NOP statement Object-like macro
 + */
 +
 +#ifndef Curl_nop_stmt
 +#  define Curl_nop_stmt do { } WHILE_FALSE
 +#endif
 +
 +/*
 + * Ensure that Winsock and lwIP TCP/IP stacks are not mixed.
 + */
 +
 +#if defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H)
 +#  if defined(SOCKET) || \
 +     defined(USE_WINSOCK) || \
 +     defined(HAVE_WINSOCK_H) || \
 +     defined(HAVE_WINSOCK2_H) || \
 +     defined(HAVE_WS2TCPIP_H)
 +#    error "Winsock and lwIP TCP/IP stack definitions shall not coexist!"
 +#  endif
 +#endif
 +
 +/*
 + * Portable symbolic names for Winsock shutdown() mode flags.
 + */
 +
 +#ifdef USE_WINSOCK
 +#  define SHUT_RD   0x00
 +#  define SHUT_WR   0x01
 +#  define SHUT_RDWR 0x02
 +#endif
 +
 +/* Define S_ISREG if not defined by system headers, f.e. MSVC */
 +#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
 +#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 +#endif
 +
 +/* Define S_ISDIR if not defined by system headers, f.e. MSVC */
 +#if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
 +#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
 +#endif
 +
 +/* In Windows the default file mode is text but an application can override it.
 +Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
 +*/
 +#if defined(WIN32) || defined(MSDOS)
 +#define FOPEN_READTEXT "rt"
 +#define FOPEN_WRITETEXT "wt"
++#define FOPEN_APPENDTEXT "at"
 +#elif defined(__CYGWIN__)
 +/* Cygwin has specific behavior we need to address when WIN32 is not defined.
 +https://cygwin.com/cygwin-ug-net/using-textbinary.html
 +For write we want our output to have line endings of LF and be compatible with
 +other Cygwin utilities. For read we want to handle input that may have line
 +endings either CRLF or LF so 't' is appropriate.
 +*/
 +#define FOPEN_READTEXT "rt"
 +#define FOPEN_WRITETEXT "w"
++#define FOPEN_APPENDTEXT "a"
 +#else
 +#define FOPEN_READTEXT "r"
 +#define FOPEN_WRITETEXT "w"
++#define FOPEN_APPENDTEXT "a"
 +#endif
 +
 +/* WinSock destroys recv() buffer when send() failed.
 + * Enabled automatically for Windows and for Cygwin as Cygwin sockets are
 + * wrappers for WinSock sockets. https://github.com/curl/curl/issues/657
 + * Define DONT_USE_RECV_BEFORE_SEND_WORKAROUND to force disable workaround.
 + */
 +#if !defined(DONT_USE_RECV_BEFORE_SEND_WORKAROUND)
 +#  if defined(WIN32) || defined(__CYGWIN__)
 +#    define USE_RECV_BEFORE_SEND_WORKAROUND
 +#  endif
 +#else  /* DONT_USE_RECV_BEFORE_SEND_WORKAROUNDS */
 +#  ifdef USE_RECV_BEFORE_SEND_WORKAROUND
 +#    undef USE_RECV_BEFORE_SEND_WORKAROUND
 +#  endif
 +#endif /* DONT_USE_RECV_BEFORE_SEND_WORKAROUNDS */
 +
 +/* Detect Windows App environment which has a restricted access
 + * to the Win32 APIs. */
 +# if defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)
 +#  include <winapifamily.h>
 +#  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && \
 +     !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
 +#    define CURL_WINDOWS_APP
 +#  endif
 +# endif
 +
 +#endif /* HEADER_CURL_SETUP_H */
diff --cc Utilities/cmcurl/lib/ftp.c
index 783dbe1,0000000..84ae37b
mode 100644,000000..100644
--- a/Utilities/cmcurl/lib/ftp.c
+++ b/Utilities/cmcurl/lib/ftp.c
@@@ -1,4546 -1,0 +1,4482 @@@
 +/***************************************************************************
 + *                                  _   _ ____  _
 + *  Project                     ___| | | |  _ \| |
 + *                             / __| | | | |_) | |
 + *                            | (__| |_| |  _ <| |___
 + *                             \___|\___/|_| \_\_____|
 + *
 + * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 + *
 + * This software is licensed as described in the file COPYING, which
 + * you should have received as part of this distribution. The terms
 + * are also available at https://curl.haxx.se/docs/copyright.html.
 + *
 + * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 + * copies of the Software, and permit persons to whom the Software is
 + * furnished to do so, under the terms of the COPYING file.
 + *
 + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 + * KIND, either express or implied.
 + *
 + ***************************************************************************/
 +
 +#include "curl_setup.h"
 +
 +#ifndef CURL_DISABLE_FTP
 +
 +#ifdef HAVE_NETINET_IN_H
 +#include <netinet/in.h>
 +#endif
 +#ifdef HAVE_ARPA_INET_H
 +#include <arpa/inet.h>
 +#endif
 +#ifdef HAVE_UTSNAME_H
 +#include <sys/utsname.h>
 +#endif
 +#ifdef HAVE_NETDB_H
 +#include <netdb.h>
 +#endif
 +#ifdef __VMS
 +#include <in.h>
 +#include <inet.h>
 +#endif
 +
 +#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
 +#undef in_addr_t
 +#define in_addr_t unsigned long
 +#endif
 +
 +#include <curl/curl.h>
 +#include "urldata.h"
 +#include "sendf.h"
 +#include "if2ip.h"
 +#include "hostip.h"
 +#include "progress.h"
 +#include "transfer.h"
 +#include "escape.h"
 +#include "http.h" /* for HTTP proxy tunnel stuff */
 +#include "socks.h"
 +#include "ftp.h"
 +#include "fileinfo.h"
 +#include "ftplistparser.h"
 +#include "curl_sec.h"
 +#include "strtoofft.h"
 +#include "strcase.h"
 +#include "vtls/vtls.h"
 +#include "connect.h"
 +#include "strerror.h"
 +#include "inet_ntop.h"
 +#include "inet_pton.h"
 +#include "select.h"
 +#include "parsedate.h" /* for the week day and month names */
 +#include "sockaddr.h" /* required for Curl_sockaddr_storage */
 +#include "multiif.h"
 +#include "url.h"
 +#include "strcase.h"
 +#include "speedcheck.h"
 +#include "warnless.h"
 +#include "http_proxy.h"
 +#include "non-ascii.h"
 +/* The last 3 #include files should be in this order */
 +#include "curl_printf.h"
 +#include "curl_memory.h"
 +#include "memdebug.h"
 +
 +#ifndef NI_MAXHOST
 +#define NI_MAXHOST 1025
 +#endif
 +#ifndef INET_ADDRSTRLEN
 +#define INET_ADDRSTRLEN 16
 +#endif
 +
 +#ifdef CURL_DISABLE_VERBOSE_STRINGS
 +#define ftp_pasv_verbose(a,b,c,d)  Curl_nop_stmt
 +#endif
 +
 +/* Local API functions */
 +#ifndef DEBUGBUILD
 +static void _state(struct connectdata *conn,
 +                   ftpstate newstate);
 +#define state(x,y) _state(x,y)
 +#else
 +static void _state(struct connectdata *conn,
 +                   ftpstate newstate,
 +                   int lineno);
 +#define state(x,y) _state(x,y,__LINE__)
 +#endif
 +
 +static CURLcode ftp_sendquote(struct connectdata *conn,
 +                              struct curl_slist *quote);
 +static CURLcode ftp_quit(struct connectdata *conn);
 +static CURLcode ftp_parse_url_path(struct connectdata *conn);
 +static CURLcode ftp_regular_transfer(struct connectdata *conn, bool *done);
 +#ifndef CURL_DISABLE_VERBOSE_STRINGS
 +static void ftp_pasv_verbose(struct connectdata *conn,
 +                             Curl_addrinfo *ai,
 +                             char *newhost, /* ascii version */
 +                             int port);
 +#endif
 +static CURLcode ftp_state_prepare_transfer(struct connectdata *conn);
 +static CURLcode ftp_state_mdtm(struct connectdata *conn);
 +static CURLcode ftp_state_quote(struct connectdata *conn,
 +                                bool init, ftpstate instate);
 +static CURLcode ftp_nb_type(struct connectdata *conn,
 +                            bool ascii, ftpstate newstate);
 +static int ftp_need_type(struct connectdata *conn,
 +                         bool ascii);
 +static CURLcode ftp_do(struct connectdata *conn, bool *done);
 +static CURLcode ftp_done(struct connectdata *conn,
 +                         CURLcode, bool premature);
 +static CURLcode ftp_connect(struct connectdata *conn, bool *done);
 +static CURLcode ftp_disconnect(struct connectdata *conn, bool dead_connection);
 +static CURLcode ftp_do_more(struct connectdata *conn, int *completed);
 +static CURLcode ftp_multi_statemach(struct connectdata *conn, bool *done);
 +static int ftp_getsock(struct connectdata *conn, curl_socket_t *socks,
 +                       int numsocks);
 +static int ftp_domore_getsock(struct connectdata *conn, curl_socket_t *socks,
 +                              int numsocks);
 +static CURLcode ftp_doing(struct connectdata *conn,
 +                          bool *dophase_done);
 +static CURLcode ftp_setup_connection(struct connectdata * conn);
 +
 +static CURLcode init_wc_data(struct connectdata *conn);
 +static CURLcode wc_statemach(struct connectdata *conn);
 +
 +static void wc_data_dtor(void *ptr);
 +
 +static CURLcode ftp_state_retr(struct connectdata *conn, curl_off_t filesize);
 +
 +static CURLcode ftp_readresp(curl_socket_t sockfd,
 +                             struct pingpong *pp,
 +                             int *ftpcode,
 +                             size_t *size);
 +static CURLcode ftp_dophase_done(struct connectdata *conn,
 +                                 bool connected);
 +
 +/* easy-to-use macro: */
 +#define PPSENDF(x,y,z)  result = Curl_pp_sendf(x,y,z); \
 +                        if(result)                     \
 +                          return result
 +
 +
 +/*
 + * FTP protocol handler.
 + */
 +
 +const struct Curl_handler Curl_handler_ftp = {
 +  "FTP",                           /* scheme */
 +  ftp_setup_connection,            /* setup_connection */
 +  ftp_do,                          /* do_it */
 +  ftp_done,                        /* done */
 +  ftp_do_more,                     /* do_more */
 +  ftp_connect,                     /* connect_it */
 +  ftp_multi_statemach,             /* connecting */
 +  ftp_doing,                       /* doing */
 +  ftp_getsock,                     /* proto_getsock */
 +  ftp_getsock,                     /* doing_getsock */
 +  ftp_domore_getsock,              /* domore_getsock */
 +  ZERO_NULL,                       /* perform_getsock */
 +  ftp_disconnect,                  /* disconnect */
 +  ZERO_NULL,                       /* readwrite */
++  ZERO_NULL,                       /* connection_check */
 +  PORT_FTP,                        /* defport */
 +  CURLPROTO_FTP,                   /* protocol */
-   PROTOPT_DUAL | PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD
-   | PROTOPT_NOURLQUERY /* flags */
++  PROTOPT_DUAL | PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD |
++  PROTOPT_NOURLQUERY | PROTOPT_PROXY_AS_HTTP /* flags */
 +};
 +
 +
 +#ifdef USE_SSL
 +/*
 + * FTPS protocol handler.
 + */
 +
 +const struct Curl_handler Curl_handler_ftps = {
 +  "FTPS",                          /* scheme */
 +  ftp_setup_connection,            /* setup_connection */
 +  ftp_do,                          /* do_it */
 +  ftp_done,                        /* done */
 +  ftp_do_more,                     /* do_more */
 +  ftp_connect,                     /* connect_it */
 +  ftp_multi_statemach,             /* connecting */
 +  ftp_doing,                       /* doing */
 +  ftp_getsock,                     /* proto_getsock */
 +  ftp_getsock,                     /* doing_getsock */
 +  ftp_domore_getsock,              /* domore_getsock */
 +  ZERO_NULL,                       /* perform_getsock */
 +  ftp_disconnect,                  /* disconnect */
 +  ZERO_NULL,                       /* readwrite */
++  ZERO_NULL,                       /* connection_check */
 +  PORT_FTPS,                       /* defport */
 +  CURLPROTO_FTPS,                  /* protocol */
 +  PROTOPT_SSL | PROTOPT_DUAL | PROTOPT_CLOSEACTION |
 +  PROTOPT_NEEDSPWD | PROTOPT_NOURLQUERY /* flags */
 +};
 +#endif
 +
- #ifndef CURL_DISABLE_HTTP
- /*
-  * HTTP-proxyed FTP protocol handler.
-  */
- 
- static const struct Curl_handler Curl_handler_ftp_proxy = {
-   "FTP",                                /* scheme */
-   Curl_http_setup_conn,                 /* setup_connection */
-   Curl_http,                            /* do_it */
-   Curl_http_done,                       /* done */
-   ZERO_NULL,                            /* do_more */
-   ZERO_NULL,                            /* connect_it */
-   ZERO_NULL,                            /* connecting */
-   ZERO_NULL,                            /* doing */
-   ZERO_NULL,                            /* proto_getsock */
-   ZERO_NULL,                            /* doing_getsock */
-   ZERO_NULL,                            /* domore_getsock */
-   ZERO_NULL,                            /* perform_getsock */
-   ZERO_NULL,                            /* disconnect */
-   ZERO_NULL,                            /* readwrite */
-   PORT_FTP,                             /* defport */
-   CURLPROTO_HTTP,                       /* protocol */
-   PROTOPT_NONE                          /* flags */
- };
- 
- 
- #ifdef USE_SSL
- /*
-  * HTTP-proxyed FTPS protocol handler.
-  */
- 
- static const struct Curl_handler Curl_handler_ftps_proxy = {
-   "FTPS",                               /* scheme */
-   Curl_http_setup_conn,                 /* setup_connection */
-   Curl_http,                            /* do_it */
-   Curl_http_done,                       /* done */
-   ZERO_NULL,                            /* do_more */
-   ZERO_NULL,                            /* connect_it */
-   ZERO_NULL,                            /* connecting */
-   ZERO_NULL,                            /* doing */
-   ZERO_NULL,                            /* proto_getsock */
-   ZERO_NULL,                            /* doing_getsock */
-   ZERO_NULL,                            /* domore_getsock */
-   ZERO_NULL,                            /* perform_getsock */
-   ZERO_NULL,                            /* disconnect */
-   ZERO_NULL,                            /* readwrite */
-   PORT_FTPS,                            /* defport */
-   CURLPROTO_HTTP,                       /* protocol */
-   PROTOPT_NONE                          /* flags */
- };
- #endif
- #endif
- 
 +static void close_secondarysocket(struct connectdata *conn)
 +{
 +  if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET]) {
 +    Curl_closesocket(conn, conn->sock[SECONDARYSOCKET]);
 +    conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
 +  }
 +  conn->bits.tcpconnect[SECONDARYSOCKET] = FALSE;
-   conn->tunnel_state[SECONDARYSOCKET] = TUNNEL_INIT;
 +}
 +
 +/*
 + * NOTE: back in the old days, we added code in the FTP code that made NOBODY
 + * requests on files respond with headers passed to the client/stdout that
 + * looked like HTTP ones.
 + *
 + * This approach is not very elegant, it causes confusion and is error-prone.
 + * It is subject for removal at the next (or at least a future) soname bump.
 + * Until then you can test the effects of the removal by undefining the
 + * following define named CURL_FTP_HTTPSTYLE_HEAD.
 + */
 +#define CURL_FTP_HTTPSTYLE_HEAD 1
 +
 +static void freedirs(struct ftp_conn *ftpc)
 +{
 +  int i;
 +  if(ftpc->dirs) {
-     for(i=0; i < ftpc->dirdepth; i++) {
++    for(i = 0; i < ftpc->dirdepth; i++) {
 +      free(ftpc->dirs[i]);
-       ftpc->dirs[i]=NULL;
++      ftpc->dirs[i] = NULL;
 +    }
 +    free(ftpc->dirs);
 +    ftpc->dirs = NULL;
 +    ftpc->dirdepth = 0;
 +  }
 +  Curl_safefree(ftpc->file);
 +
 +  /* no longer of any use */
 +  Curl_safefree(ftpc->newhost);
 +}
 +
 +/* Returns non-zero if the given string contains CR (\r) or LF (\n),
 +   which are not allowed within RFC 959 <string>.
 +   Note: The input string is in the client's encoding which might
 +   not be ASCII, so escape sequences \r & \n must be used instead
 +   of hex values 0x0d & 0x0a.
 +*/
 +static bool isBadFtpString(const char *string)
 +{
 +  return ((NULL != strchr(string, '\r')) ||
 +          (NULL != strchr(string, '\n'))) ? TRUE : FALSE;
 +}
 +
 +/***********************************************************************
 + *
 + * AcceptServerConnect()
 + *
 + * After connection request is received from the server this function is
 + * called to accept the connection and close the listening socket
 + *
 + */
 +static CURLcode AcceptServerConnect(struct connectdata *conn)
 +{
 +  struct Curl_easy *data = conn->data;
 +  curl_socket_t sock = conn->sock[SECONDARYSOCKET];
 +  curl_socket_t s = CURL_SOCKET_BAD;
 +#ifdef ENABLE_IPV6
 +  struct Curl_sockaddr_storage add;
 +#else
 +  struct sockaddr_in add;
 +#endif
 +  curl_socklen_t size = (curl_socklen_t) sizeof(add);
 +
 +  if(0 == getsockname(sock, (struct sockaddr *) &add, &size)) {
 +    size = sizeof(add);
 +
-     s=accept(sock, (struct sockaddr *) &add, &size);
++    s = accept(sock, (struct sockaddr *) &add, &size);
 +  }
 +  Curl_closesocket(conn, sock); /* close the first socket */
 +
 +  if(CURL_SOCKET_BAD == s) {
 +    failf(data, "Error accept()ing server connect");
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +  infof(data, "Connection accepted from server\n");
 +  /* when this happens within the DO state it is important that we mark us as
 +     not needing DO_MORE anymore */
 +  conn->bits.do_more = FALSE;
 +
 +  conn->sock[SECONDARYSOCKET] = s;
 +  (void)curlx_nonblock(s, TRUE); /* enable non-blocking */
 +  conn->sock_accepted[SECONDARYSOCKET] = TRUE;
 +
 +  if(data->set.fsockopt) {
 +    int error = 0;
 +
 +    /* activate callback for setting socket options */
 +    error = data->set.fsockopt(data->set.sockopt_client,
 +                               s,
 +                               CURLSOCKTYPE_ACCEPT);
 +
 +    if(error) {
 +      close_secondarysocket(conn);
 +      return CURLE_ABORTED_BY_CALLBACK;
 +    }
 +  }
 +
 +  return CURLE_OK;
 +
 +}
 +
 +/*
 + * ftp_timeleft_accept() returns the amount of milliseconds left allowed for
 + * waiting server to connect. If the value is negative, the timeout time has
 + * already elapsed.
 + *
 + * The start time is stored in progress.t_acceptdata - as set with
 + * Curl_pgrsTime(..., TIMER_STARTACCEPT);
 + *
 + */
 +static time_t ftp_timeleft_accept(struct Curl_easy *data)
 +{
 +  time_t timeout_ms = DEFAULT_ACCEPT_TIMEOUT;
 +  time_t other;
-   struct timeval now;
++  struct curltime now;
 +
 +  if(data->set.accepttimeout > 0)
 +    timeout_ms = data->set.accepttimeout;
 +
 +  now = Curl_tvnow();
 +
 +  /* check if the generic timeout possibly is set shorter */
 +  other =  Curl_timeleft(data, &now, FALSE);
 +  if(other && (other < timeout_ms))
 +    /* note that this also works fine for when other happens to be negative
 +       due to it already having elapsed */
 +    timeout_ms = other;
 +  else {
 +    /* subtract elapsed time */
 +    timeout_ms -= Curl_tvdiff(now, data->progress.t_acceptdata);
 +    if(!timeout_ms)
 +      /* avoid returning 0 as that means no timeout! */
 +      return -1;
 +  }
 +
 +  return timeout_ms;
 +}
 +
 +
 +/***********************************************************************
 + *
 + * ReceivedServerConnect()
 + *
 + * After allowing server to connect to us from data port, this function
 + * checks both data connection for connection establishment and ctrl
 + * connection for a negative response regarding a failure in connecting
 + *
 + */
 +static CURLcode ReceivedServerConnect(struct connectdata *conn, bool *received)
 +{
 +  struct Curl_easy *data = conn->data;
 +  curl_socket_t ctrl_sock = conn->sock[FIRSTSOCKET];
 +  curl_socket_t data_sock = conn->sock[SECONDARYSOCKET];
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +  int result;
 +  time_t timeout_ms;
 +  ssize_t nread;
 +  int ftpcode;
 +
 +  *received = FALSE;
 +
 +  timeout_ms = ftp_timeleft_accept(data);
 +  infof(data, "Checking for server connect\n");
 +  if(timeout_ms < 0) {
 +    /* if a timeout was already reached, bail out */
 +    failf(data, "Accept timeout occurred while waiting server connect");
 +    return CURLE_FTP_ACCEPT_TIMEOUT;
 +  }
 +
 +  /* First check whether there is a cached response from server */
 +  if(pp->cache_size && pp->cache && pp->cache[0] > '3') {
 +    /* Data connection could not be established, let's return */
 +    infof(data, "There is negative response in cache while serv connect\n");
 +    Curl_GetFTPResponse(&nread, conn, &ftpcode);
 +    return CURLE_FTP_ACCEPT_FAILED;
 +  }
 +
 +  result = Curl_socket_check(ctrl_sock, data_sock, CURL_SOCKET_BAD, 0);
 +
 +  /* see if the connection request is already here */
 +  switch(result) {
 +  case -1: /* error */
 +    /* let's die here */
 +    failf(data, "Error while waiting for server connect");
 +    return CURLE_FTP_ACCEPT_FAILED;
 +  case 0:  /* Server connect is not received yet */
 +    break; /* loop */
 +  default:
 +
 +    if(result & CURL_CSELECT_IN2) {
 +      infof(data, "Ready to accept data connection from server\n");
 +      *received = TRUE;
 +    }
 +    else if(result & CURL_CSELECT_IN) {
 +      infof(data, "Ctrl conn has data while waiting for data conn\n");
 +      Curl_GetFTPResponse(&nread, conn, &ftpcode);
 +
 +      if(ftpcode/100 > 3)
 +        return CURLE_FTP_ACCEPT_FAILED;
 +
 +      return CURLE_WEIRD_SERVER_REPLY;
 +    }
 +
 +    break;
 +  } /* switch() */
 +
 +  return CURLE_OK;
 +}
 +
 +
 +/***********************************************************************
 + *
 + * InitiateTransfer()
 + *
 + * After connection from server is accepted this function is called to
 + * setup transfer parameters and initiate the data transfer.
 + *
 + */
 +static CURLcode InitiateTransfer(struct connectdata *conn)
 +{
 +  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  CURLcode result = CURLE_OK;
 +
 +  if(conn->bits.ftp_use_data_ssl) {
 +    /* since we only have a plaintext TCP connection here, we must now
 +     * do the TLS stuff */
 +    infof(data, "Doing the SSL/TLS handshake on the data stream\n");
 +    result = Curl_ssl_connect(conn, SECONDARYSOCKET);
 +    if(result)
 +      return result;
 +  }
 +
 +  if(conn->proto.ftpc.state_saved == FTP_STOR) {
-     *(ftp->bytecountp)=0;
++    *(ftp->bytecountp) = 0;
 +
 +    /* When we know we're uploading a specified file, we can get the file
 +       size prior to the actual upload. */
 +
 +    Curl_pgrsSetUploadSize(data, data->state.infilesize);
 +
 +    /* set the SO_SNDBUF for the secondary socket for those who need it */
 +    Curl_sndbufset(conn->sock[SECONDARYSOCKET]);
 +
 +    Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */
 +                        SECONDARYSOCKET, ftp->bytecountp);
 +  }
 +  else {
 +    /* FTP download: */
 +    Curl_setup_transfer(conn, SECONDARYSOCKET,
 +                        conn->proto.ftpc.retr_size_saved, FALSE,
 +                        ftp->bytecountp, -1, NULL); /* no upload here */
 +  }
 +
 +  conn->proto.ftpc.pp.pending_resp = TRUE; /* expect server response */
 +  state(conn, FTP_STOP);
 +
 +  return CURLE_OK;
 +}
 +
 +/***********************************************************************
 + *
 + * AllowServerConnect()
 + *
 + * When we've issue the PORT command, we have told the server to connect to
 + * us. This function checks whether data connection is established if so it is
 + * accepted.
 + *
 + */
 +static CURLcode AllowServerConnect(struct connectdata *conn, bool *connected)
 +{
 +  struct Curl_easy *data = conn->data;
 +  time_t timeout_ms;
 +  CURLcode result = CURLE_OK;
 +
 +  *connected = FALSE;
 +  infof(data, "Preparing for accepting server on data port\n");
 +
 +  /* Save the time we start accepting server connect */
 +  Curl_pgrsTime(data, TIMER_STARTACCEPT);
 +
 +  timeout_ms = ftp_timeleft_accept(data);
 +  if(timeout_ms < 0) {
 +    /* if a timeout was already reached, bail out */
 +    failf(data, "Accept timeout occurred while waiting server connect");
 +    return CURLE_FTP_ACCEPT_TIMEOUT;
 +  }
 +
 +  /* see if the connection request is already here */
 +  result = ReceivedServerConnect(conn, connected);
 +  if(result)
 +    return result;
 +
 +  if(*connected) {
 +    result = AcceptServerConnect(conn);
 +    if(result)
 +      return result;
 +
 +    result = InitiateTransfer(conn);
 +    if(result)
 +      return result;
 +  }
 +  else {
 +    /* Add timeout to multi handle and break out of the loop */
 +    if(!result && *connected == FALSE) {
 +      Curl_expire(data, data->set.accepttimeout > 0 ?
 +                  data->set.accepttimeout: DEFAULT_ACCEPT_TIMEOUT, 0);
 +    }
 +  }
 +
 +  return result;
 +}
 +
 +/* macro to check for a three-digit ftp status code at the start of the
 +   given string */
 +#define STATUSCODE(line) (ISDIGIT(line[0]) && ISDIGIT(line[1]) &&       \
 +                          ISDIGIT(line[2]))
 +
 +/* macro to check for the last line in an FTP server response */
 +#define LASTLINE(line) (STATUSCODE(line) && (' ' == line[3]))
 +
 +static bool ftp_endofresp(struct connectdata *conn, char *line, size_t len,
 +                          int *code)
 +{
 +  (void)conn;
 +
 +  if((len > 3) && LASTLINE(line)) {
 +    *code = curlx_sltosi(strtol(line, NULL, 10));
 +    return TRUE;
 +  }
 +
 +  return FALSE;
 +}
 +
 +static CURLcode ftp_readresp(curl_socket_t sockfd,
 +                             struct pingpong *pp,
 +                             int *ftpcode, /* return the ftp-code if done */
 +                             size_t *size) /* size of the response */
 +{
 +  struct connectdata *conn = pp->conn;
 +  struct Curl_easy *data = conn->data;
 +#ifdef HAVE_GSSAPI
 +  char * const buf = data->state.buffer;
 +#endif
 +  CURLcode result = CURLE_OK;
 +  int code;
 +
 +  result = Curl_pp_readresp(sockfd, pp, &code, size);
 +
 +#if defined(HAVE_GSSAPI)
 +  /* handle the security-oriented responses 6xx ***/
 +  /* FIXME: some errorchecking perhaps... ***/
 +  switch(code) {
 +  case 631:
 +    code = Curl_sec_read_msg(conn, buf, PROT_SAFE);
 +    break;
 +  case 632:
 +    code = Curl_sec_read_msg(conn, buf, PROT_PRIVATE);
 +    break;
 +  case 633:
 +    code = Curl_sec_read_msg(conn, buf, PROT_CONFIDENTIAL);
 +    break;
 +  default:
 +    /* normal ftp stuff we pass through! */
 +    break;
 +  }
 +#endif
 +
 +  /* store the latest code for later retrieval */
-   data->info.httpcode=code;
++  data->info.httpcode = code;
 +
 +  if(ftpcode)
 +    *ftpcode = code;
 +
 +  if(421 == code) {
 +    /* 421 means "Service not available, closing control connection." and FTP
 +     * servers use it to signal that idle session timeout has been exceeded.
 +     * If we ignored the response, it could end up hanging in some cases.
 +     *
 +     * This response code can come at any point so having it treated
 +     * generically is a good idea.
 +     */
 +    infof(data, "We got a 421 - timeout!\n");
 +    state(conn, FTP_STOP);
 +    return CURLE_OPERATION_TIMEDOUT;
 +  }
 +
 +  return result;
 +}
 +
 +/* --- parse FTP server responses --- */
 +
 +/*
 + * Curl_GetFTPResponse() is a BLOCKING function to read the full response
 + * from a server after a command.
 + *
 + */
 +
 +CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
 +                             struct connectdata *conn,
 +                             int *ftpcode) /* return the ftp-code */
 +{
 +  /*
 +   * We cannot read just one byte per read() and then go back to select() as
 +   * the OpenSSL read() doesn't grok that properly.
 +   *
 +   * Alas, read as much as possible, split up into lines, use the ending
 +   * line in a response or continue reading.  */
 +
 +  curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
 +  time_t timeout;              /* timeout in milliseconds */
 +  time_t interval_ms;
 +  struct Curl_easy *data = conn->data;
 +  CURLcode result = CURLE_OK;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +  size_t nread;
-   int cache_skip=0;
-   int value_to_be_ignored=0;
++  int cache_skip = 0;
++  int value_to_be_ignored = 0;
 +
 +  if(ftpcode)
 +    *ftpcode = 0; /* 0 for errors */
 +  else
 +    /* make the pointer point to something for the rest of this function */
 +    ftpcode = &value_to_be_ignored;
 +
-   *nreadp=0;
++  *nreadp = 0;
 +
 +  while(!*ftpcode && !result) {
 +    /* check and reset timeout value every lap */
 +    timeout = Curl_pp_state_timeout(pp);
 +
-     if(timeout <=0) {
++    if(timeout <= 0) {
 +      failf(data, "FTP response timeout");
 +      return CURLE_OPERATION_TIMEDOUT; /* already too little time */
 +    }
 +
 +    interval_ms = 1000;  /* use 1 second timeout intervals */
 +    if(timeout < interval_ms)
 +      interval_ms = timeout;
 +
 +    /*
 +     * Since this function is blocking, we need to wait here for input on the
 +     * connection and only then we call the response reading function. We do
 +     * timeout at least every second to make the timeout check run.
 +     *
 +     * A caution here is that the ftp_readresp() function has a cache that may
 +     * contain pieces of a response from the previous invoke and we need to
 +     * make sure we don't just wait for input while there is unhandled data in
 +     * that cache. But also, if the cache is there, we call ftp_readresp() and
 +     * the cache wasn't good enough to continue we must not just busy-loop
 +     * around this function.
 +     *
 +     */
 +
 +    if(pp->cache && (cache_skip < 2)) {
 +      /*
 +       * There's a cache left since before. We then skipping the wait for
 +       * socket action, unless this is the same cache like the previous round
 +       * as then the cache was deemed not enough to act on and we then need to
 +       * wait for more data anyway.
 +       */
 +    }
 +    else if(!Curl_conn_data_pending(conn, FIRSTSOCKET)) {
 +      switch(SOCKET_READABLE(sockfd, interval_ms)) {
 +      case -1: /* select() error, stop reading */
 +        failf(data, "FTP response aborted due to select/poll error: %d",
 +              SOCKERRNO);
 +        return CURLE_RECV_ERROR;
 +
 +      case 0: /* timeout */
 +        if(Curl_pgrsUpdate(conn))
 +          return CURLE_ABORTED_BY_CALLBACK;
 +        continue; /* just continue in our loop for the timeout duration */
 +
 +      default: /* for clarity */
 +        break;
 +      }
 +    }
 +    result = ftp_readresp(sockfd, pp, ftpcode, &nread);
 +    if(result)
 +      break;
 +
 +    if(!nread && pp->cache)
 +      /* bump cache skip counter as on repeated skips we must wait for more
 +         data */
 +      cache_skip++;
 +    else
 +      /* when we got data or there is no cache left, we reset the cache skip
 +         counter */
-       cache_skip=0;
++      cache_skip = 0;
 +
 +    *nreadp += nread;
 +
 +  } /* while there's buffer left and loop is requested */
 +
 +  pp->pending_resp = FALSE;
 +
 +  return result;
 +}
 +
 +#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
 +  /* for debug purposes */
 +static const char * const ftp_state_names[]={
 +  "STOP",
 +  "WAIT220",
 +  "AUTH",
 +  "USER",
 +  "PASS",
 +  "ACCT",
 +  "PBSZ",
 +  "PROT",
 +  "CCC",
 +  "PWD",
 +  "SYST",
 +  "NAMEFMT",
 +  "QUOTE",
 +  "RETR_PREQUOTE",
 +  "STOR_PREQUOTE",
 +  "POSTQUOTE",
 +  "CWD",
 +  "MKD",
 +  "MDTM",
 +  "TYPE",
 +  "LIST_TYPE",
 +  "RETR_TYPE",
 +  "STOR_TYPE",
 +  "SIZE",
 +  "RETR_SIZE",
 +  "STOR_SIZE",
 +  "REST",
 +  "RETR_REST",
 +  "PORT",
 +  "PRET",
 +  "PASV",
 +  "LIST",
 +  "RETR",
 +  "STOR",
 +  "QUIT"
 +};
 +#endif
 +
 +/* This is the ONLY way to change FTP state! */
 +static void _state(struct connectdata *conn,
 +                   ftpstate newstate
 +#ifdef DEBUGBUILD
 +                   , int lineno
 +#endif
 +  )
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +#if defined(DEBUGBUILD)
 +
 +#if defined(CURL_DISABLE_VERBOSE_STRINGS)
 +  (void) lineno;
 +#else
 +  if(ftpc->state != newstate)
 +    infof(conn->data, "FTP %p (line %d) state change from %s to %s\n",
 +          (void *)ftpc, lineno, ftp_state_names[ftpc->state],
 +          ftp_state_names[newstate]);
 +#endif
 +#endif
 +
 +  ftpc->state = newstate;
 +}
 +
 +static CURLcode ftp_state_user(struct connectdata *conn)
 +{
 +  CURLcode result;
 +  struct FTP *ftp = conn->data->req.protop;
 +  /* send USER */
 +  PPSENDF(&conn->proto.ftpc.pp, "USER %s", ftp->user?ftp->user:"");
 +
 +  state(conn, FTP_USER);
 +  conn->data->state.ftp_trying_alternative = FALSE;
 +
 +  return CURLE_OK;
 +}
 +
 +static CURLcode ftp_state_pwd(struct connectdata *conn)
 +{
 +  CURLcode result;
 +
 +  /* send PWD to discover our entry point */
 +  PPSENDF(&conn->proto.ftpc.pp, "%s", "PWD");
 +  state(conn, FTP_PWD);
 +
 +  return CURLE_OK;
 +}
 +
 +/* For the FTP "protocol connect" and "doing" phases only */
 +static int ftp_getsock(struct connectdata *conn,
 +                       curl_socket_t *socks,
 +                       int numsocks)
 +{
 +  return Curl_pp_getsock(&conn->proto.ftpc.pp, socks, numsocks);
 +}
 +
 +/* For the FTP "DO_MORE" phase only */
 +static int ftp_domore_getsock(struct connectdata *conn, curl_socket_t *socks,
 +                              int numsocks)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if(!numsocks)
 +    return GETSOCK_BLANK;
 +
 +  /* When in DO_MORE state, we could be either waiting for us to connect to a
 +   * remote site, or we could wait for that site to connect to us. Or just
 +   * handle ordinary commands.
 +   */
 +
 +  if(FTP_STOP == ftpc->state) {
 +    int bits = GETSOCK_READSOCK(0);
 +
 +    /* if stopped and still in this state, then we're also waiting for a
 +       connect on the secondary connection */
 +    socks[0] = conn->sock[FIRSTSOCKET];
 +
 +    if(!conn->data->set.ftp_use_port) {
 +      int s;
 +      int i;
 +      /* PORT is used to tell the server to connect to us, and during that we
 +         don't do happy eyeballs, but we do if we connect to the server */
-       for(s=1, i=0; i<2; i++) {
++      for(s = 1, i = 0; i<2; i++) {
 +        if(conn->tempsock[i] != CURL_SOCKET_BAD) {
 +          socks[s] = conn->tempsock[i];
 +          bits |= GETSOCK_WRITESOCK(s++);
 +        }
 +      }
 +    }
 +    else {
 +      socks[1] = conn->sock[SECONDARYSOCKET];
 +      bits |= GETSOCK_WRITESOCK(1) | GETSOCK_READSOCK(1);
 +    }
 +
 +    return bits;
 +  }
 +  return Curl_pp_getsock(&conn->proto.ftpc.pp, socks, numsocks);
 +}
 +
 +/* This is called after the FTP_QUOTE state is passed.
 +
 +   ftp_state_cwd() sends the range of CWD commands to the server to change to
 +   the correct directory. It may also need to send MKD commands to create
 +   missing ones, if that option is enabled.
 +*/
 +static CURLcode ftp_state_cwd(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if(ftpc->cwddone)
 +    /* already done and fine */
 +    result = ftp_state_mdtm(conn);
 +  else {
 +    ftpc->count2 = 0; /* count2 counts failed CWDs */
 +
 +    /* count3 is set to allow a MKD to fail once. In the case when first CWD
 +       fails and then MKD fails (due to another session raced it to create the
 +       dir) this then allows for a second try to CWD to it */
-     ftpc->count3 = (conn->data->set.ftp_create_missing_dirs==2)?1:0;
++    ftpc->count3 = (conn->data->set.ftp_create_missing_dirs == 2)?1:0;
 +
-     if(conn->bits.reuse && ftpc->entrypath) {
++    if((conn->data->set.ftp_filemethod == FTPFILE_NOCWD) && !ftpc->cwdcount)
++      /* No CWD necessary */
++      result = ftp_state_mdtm(conn);
++    else if(conn->bits.reuse && ftpc->entrypath) {
 +      /* This is a re-used connection. Since we change directory to where the
 +         transfer is taking place, we must first get back to the original dir
 +         where we ended up after login: */
-       ftpc->count1 = 0; /* we count this as the first path, then we add one
-                           for all upcoming ones in the ftp->dirs[] array */
++      ftpc->cwdcount = 0; /* we count this as the first path, then we add one
++                             for all upcoming ones in the ftp->dirs[] array */
 +      PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->entrypath);
 +      state(conn, FTP_CWD);
 +    }
 +    else {
 +      if(ftpc->dirdepth) {
-         ftpc->count1 = 1;
++        ftpc->cwdcount = 1;
 +        /* issue the first CWD, the rest is sent when the CWD responses are
 +           received... */
-         PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->dirs[ftpc->count1 -1]);
++        PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->dirs[ftpc->cwdcount -1]);
 +        state(conn, FTP_CWD);
 +      }
 +      else {
 +        /* No CWD necessary */
 +        result = ftp_state_mdtm(conn);
 +      }
 +    }
 +  }
 +  return result;
 +}
 +
 +typedef enum {
 +  EPRT,
 +  PORT,
 +  DONE
 +} ftpport;
 +
 +static CURLcode ftp_state_use_port(struct connectdata *conn,
 +                                   ftpport fcmd) /* start with this */
 +
 +{
 +  CURLcode result = CURLE_OK;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
-   struct Curl_easy *data=conn->data;
-   curl_socket_t portsock= CURL_SOCKET_BAD;
++  struct Curl_easy *data = conn->data;
++  curl_socket_t portsock = CURL_SOCKET_BAD;
 +  char myhost[256] = "";
 +
 +  struct Curl_sockaddr_storage ss;
 +  Curl_addrinfo *res, *ai;
 +  curl_socklen_t sslen;
 +  char hbuf[NI_MAXHOST];
-   struct sockaddr *sa=(struct sockaddr *)&ss;
++  struct sockaddr *sa = (struct sockaddr *)&ss;
 +  struct sockaddr_in * const sa4 = (void *)sa;
 +#ifdef ENABLE_IPV6
 +  struct sockaddr_in6 * const sa6 = (void *)sa;
 +#endif
 +  char tmp[1024];
 +  static const char mode[][5] = { "EPRT", "PORT" };
 +  int rc;
 +  int error;
 +  char *host = NULL;
 +  char *string_ftpport = data->set.str[STRING_FTPPORT];
-   struct Curl_dns_entry *h=NULL;
++  struct Curl_dns_entry *h = NULL;
 +  unsigned short port_min = 0;
 +  unsigned short port_max = 0;
 +  unsigned short port;
 +  bool possibly_non_local = TRUE;
 +
 +  char *addr = NULL;
 +
 +  /* Step 1, figure out what is requested,
 +   * accepted format :
 +   * (ipv4|ipv6|domain|interface)?(:port(-range)?)?
 +   */
 +
 +  if(data->set.str[STRING_FTPPORT] &&
 +     (strlen(data->set.str[STRING_FTPPORT]) > 1)) {
 +
 +#ifdef ENABLE_IPV6
 +    size_t addrlen = INET6_ADDRSTRLEN > strlen(string_ftpport) ?
 +      INET6_ADDRSTRLEN : strlen(string_ftpport);
 +#else
 +    size_t addrlen = INET_ADDRSTRLEN > strlen(string_ftpport) ?
 +      INET_ADDRSTRLEN : strlen(string_ftpport);
 +#endif
 +    char *ip_start = string_ftpport;
 +    char *ip_end = NULL;
 +    char *port_start = NULL;
 +    char *port_sep = NULL;
 +
-     addr = calloc(addrlen+1, 1);
++    addr = calloc(addrlen + 1, 1);
 +    if(!addr)
 +      return CURLE_OUT_OF_MEMORY;
 +
 +#ifdef ENABLE_IPV6
 +    if(*string_ftpport == '[') {
 +      /* [ipv6]:port(-range) */
 +      ip_start = string_ftpport + 1;
 +      ip_end = strchr(string_ftpport, ']');
 +      if(ip_end)
 +        strncpy(addr, ip_start, ip_end - ip_start);
 +    }
 +    else
 +#endif
 +      if(*string_ftpport == ':') {
 +        /* :port */
 +        ip_end = string_ftpport;
 +      }
 +      else {
 +        ip_end = strchr(string_ftpport, ':');
 +        if(ip_end) {
 +          /* either ipv6 or (ipv4|domain|interface):port(-range) */
 +#ifdef ENABLE_IPV6
 +          if(Curl_inet_pton(AF_INET6, string_ftpport, sa6) == 1) {
 +            /* ipv6 */
 +            port_min = port_max = 0;
 +            strcpy(addr, string_ftpport);
 +            ip_end = NULL; /* this got no port ! */
 +          }
 +          else
 +#endif
 +            /* (ipv4|domain|interface):port(-range) */
 +            strncpy(addr, string_ftpport, ip_end - ip_start);
 +        }
 +        else
 +          /* ipv4|interface */
 +          strcpy(addr, string_ftpport);
 +      }
 +
 +    /* parse the port */
 +    if(ip_end != NULL) {
 +      port_start = strchr(ip_end, ':');
 +      if(port_start) {
-         port_min = curlx_ultous(strtoul(port_start+1, NULL, 10));
++        port_min = curlx_ultous(strtoul(port_start + 1, NULL, 10));
 +        port_sep = strchr(port_start, '-');
 +        if(port_sep) {
 +          port_max = curlx_ultous(strtoul(port_sep + 1, NULL, 10));
 +        }
 +        else
 +          port_max = port_min;
 +      }
 +    }
 +
 +    /* correct errors like:
 +     *  :1234-1230
 +     *  :-4711,  in this case port_min is (unsigned)-1,
 +     *           therefore port_min > port_max for all cases
 +     *           but port_max = (unsigned)-1
 +     */
 +    if(port_min > port_max)
 +      port_min = port_max = 0;
 +
 +
 +    if(*addr != '\0') {
 +      /* attempt to get the address of the given interface name */
 +      switch(Curl_if2ip(conn->ip_addr->ai_family,
 +                        Curl_ipv6_scope(conn->ip_addr->ai_addr),
 +                        conn->scope_id, addr, hbuf, sizeof(hbuf))) {
 +        case IF2IP_NOT_FOUND:
 +          /* not an interface, use the given string as host name instead */
 +          host = addr;
 +          break;
 +        case IF2IP_AF_NOT_SUPPORTED:
 +          return CURLE_FTP_PORT_FAILED;
 +        case IF2IP_FOUND:
 +          host = hbuf; /* use the hbuf for host name */
 +      }
 +    }
 +    else
 +      /* there was only a port(-range) given, default the host */
 +      host = NULL;
 +  } /* data->set.ftpport */
 +
 +  if(!host) {
 +    /* not an interface and not a host name, get default by extracting
 +       the IP from the control connection */
 +
 +    sslen = sizeof(ss);
 +    if(getsockname(conn->sock[FIRSTSOCKET], sa, &sslen)) {
 +      failf(data, "getsockname() failed: %s",
 +          Curl_strerror(conn, SOCKERRNO) );
 +      free(addr);
 +      return CURLE_FTP_PORT_FAILED;
 +    }
 +    switch(sa->sa_family) {
 +#ifdef ENABLE_IPV6
 +    case AF_INET6:
 +      Curl_inet_ntop(sa->sa_family, &sa6->sin6_addr, hbuf, sizeof(hbuf));
 +      break;
 +#endif
 +    default:
 +      Curl_inet_ntop(sa->sa_family, &sa4->sin_addr, hbuf, sizeof(hbuf));
 +      break;
 +    }
 +    host = hbuf; /* use this host name */
 +    possibly_non_local = FALSE; /* we know it is local now */
 +  }
 +
 +  /* resolv ip/host to ip */
 +  rc = Curl_resolv(conn, host, 0, &h);
 +  if(rc == CURLRESOLV_PENDING)
 +    (void)Curl_resolver_wait_resolv(conn, &h);
 +  if(h) {
 +    res = h->addr;
 +    /* when we return from this function, we can forget about this entry
 +       to we can unlock it now already */
 +    Curl_resolv_unlock(data, h);
 +  } /* (h) */
 +  else
 +    res = NULL; /* failure! */
 +
 +  if(res == NULL) {
 +    failf(data, "failed to resolve the address provided to PORT: %s", host);
 +    free(addr);
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +
 +  free(addr);
 +  host = NULL;
 +
 +  /* step 2, create a socket for the requested address */
 +
 +  portsock = CURL_SOCKET_BAD;
 +  error = 0;
 +  for(ai = res; ai; ai = ai->ai_next) {
 +    result = Curl_socket(conn, ai, NULL, &portsock);
 +    if(result) {
 +      error = SOCKERRNO;
 +      continue;
 +    }
 +    break;
 +  }
 +  if(!ai) {
 +    failf(data, "socket failure: %s", Curl_strerror(conn, error));
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +
 +  /* step 3, bind to a suitable local address */
 +
 +  memcpy(sa, ai->ai_addr, ai->ai_addrlen);
 +  sslen = ai->ai_addrlen;
 +
 +  for(port = port_min; port <= port_max;) {
 +    if(sa->sa_family == AF_INET)
 +      sa4->sin_port = htons(port);
 +#ifdef ENABLE_IPV6
 +    else
 +      sa6->sin6_port = htons(port);
 +#endif
 +    /* Try binding the given address. */
 +    if(bind(portsock, sa, sslen) ) {
 +      /* It failed. */
 +      error = SOCKERRNO;
 +      if(possibly_non_local && (error == EADDRNOTAVAIL)) {
 +        /* The requested bind address is not local.  Use the address used for
 +         * the control connection instead and restart the port loop
 +         */
 +
 +        infof(data, "bind(port=%hu) on non-local address failed: %s\n", port,
 +              Curl_strerror(conn, error) );
 +
 +        sslen = sizeof(ss);
 +        if(getsockname(conn->sock[FIRSTSOCKET], sa, &sslen)) {
 +          failf(data, "getsockname() failed: %s",
 +                Curl_strerror(conn, SOCKERRNO) );
 +          Curl_closesocket(conn, portsock);
 +          return CURLE_FTP_PORT_FAILED;
 +        }
 +        port = port_min;
 +        possibly_non_local = FALSE; /* don't try this again */
 +        continue;
 +      }
 +      if(error != EADDRINUSE && error != EACCES) {
 +        failf(data, "bind(port=%hu) failed: %s", port,
 +              Curl_strerror(conn, error) );
 +        Curl_closesocket(conn, portsock);
 +        return CURLE_FTP_PORT_FAILED;
 +      }
 +    }
 +    else
 +      break;
 +
 +    port++;
 +  }
 +
 +  /* maybe all ports were in use already*/
 +  if(port > port_max) {
 +    failf(data, "bind() failed, we ran out of ports!");
 +    Curl_closesocket(conn, portsock);
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +
 +  /* get the name again after the bind() so that we can extract the
 +     port number it uses now */
 +  sslen = sizeof(ss);
 +  if(getsockname(portsock, (struct sockaddr *)sa, &sslen)) {
 +    failf(data, "getsockname() failed: %s",
 +          Curl_strerror(conn, SOCKERRNO) );
 +    Curl_closesocket(conn, portsock);
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +
 +  /* step 4, listen on the socket */
 +
 +  if(listen(portsock, 1)) {
 +    failf(data, "socket failure: %s", Curl_strerror(conn, SOCKERRNO));
 +    Curl_closesocket(conn, portsock);
 +    return CURLE_FTP_PORT_FAILED;
 +  }
 +
 +  /* step 5, send the proper FTP command */
 +
 +  /* get a plain printable version of the numerical address to work with
 +     below */
 +  Curl_printable_address(ai, myhost, sizeof(myhost));
 +
 +#ifdef ENABLE_IPV6
 +  if(!conn->bits.ftp_use_eprt && conn->bits.ipv6)
 +    /* EPRT is disabled but we are connected to a IPv6 host, so we ignore the
 +       request and enable EPRT again! */
 +    conn->bits.ftp_use_eprt = TRUE;
 +#endif
 +
 +  for(; fcmd != DONE; fcmd++) {
 +
 +    if(!conn->bits.ftp_use_eprt && (EPRT == fcmd))
 +      /* if disabled, goto next */
 +      continue;
 +
 +    if((PORT == fcmd) && sa->sa_family != AF_INET)
 +      /* PORT is IPv4 only */
 +      continue;
 +
 +    switch(sa->sa_family) {
 +    case AF_INET:
 +      port = ntohs(sa4->sin_port);
 +      break;
 +#ifdef ENABLE_IPV6
 +    case AF_INET6:
 +      port = ntohs(sa6->sin6_port);
 +      break;
 +#endif
 +    default:
 +      continue; /* might as well skip this */
 +    }
 +
 +    if(EPRT == fcmd) {
 +      /*
 +       * Two fine examples from RFC2428;
 +       *
 +       * EPRT |1|132.235.1.2|6275|
 +       *
 +       * EPRT |2|1080::8:800:200C:417A|5282|
 +       */
 +
 +      result = Curl_pp_sendf(&ftpc->pp, "%s |%d|%s|%hu|", mode[fcmd],
 +                             sa->sa_family == AF_INET?1:2,
 +                             myhost, port);
 +      if(result) {
 +        failf(data, "Failure sending EPRT command: %s",
 +              curl_easy_strerror(result));
 +        Curl_closesocket(conn, portsock);
 +        /* don't retry using PORT */
 +        ftpc->count1 = PORT;
 +        /* bail out */
 +        state(conn, FTP_STOP);
 +        return result;
 +      }
 +      break;
 +    }
 +    if(PORT == fcmd) {
 +      char *source = myhost;
 +      char *dest = tmp;
 +
 +      /* translate x.x.x.x to x,x,x,x */
 +      while(source && *source) {
 +        if(*source == '.')
-           *dest=',';
++          *dest = ',';
 +        else
 +          *dest = *source;
 +        dest++;
 +        source++;
 +      }
 +      *dest = 0;
 +      snprintf(dest, 20, ",%d,%d", (int)(port>>8), (int)(port&0xff));
 +
 +      result = Curl_pp_sendf(&ftpc->pp, "%s %s", mode[fcmd], tmp);
 +      if(result) {
 +        failf(data, "Failure sending PORT command: %s",
 +              curl_easy_strerror(result));
 +        Curl_closesocket(conn, portsock);
 +        /* bail out */
 +        state(conn, FTP_STOP);
 +        return result;
 +      }
 +      break;
 +    }
 +  }
 +
 +  /* store which command was sent */
 +  ftpc->count1 = fcmd;
 +
 +  close_secondarysocket(conn);
 +
 +  /* we set the secondary socket variable to this for now, it is only so that
 +     the cleanup function will close it in case we fail before the true
 +     secondary stuff is made */
 +  conn->sock[SECONDARYSOCKET] = portsock;
 +
 +  /* this tcpconnect assignment below is a hackish work-around to make the
 +     multi interface with active FTP work - as it will not wait for a
 +     (passive) connect in Curl_is_connected().
 +
 +     The *proper* fix is to make sure that the active connection from the
 +     server is done in a non-blocking way. Currently, it is still BLOCKING.
 +  */
 +  conn->bits.tcpconnect[SECONDARYSOCKET] = TRUE;
 +
 +  state(conn, FTP_PORT);
 +  return result;
 +}
 +
 +static CURLcode ftp_state_use_pasv(struct connectdata *conn)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  CURLcode result = CURLE_OK;
 +  /*
 +    Here's the excecutive summary on what to do:
 +
 +    PASV is RFC959, expect:
 +    227 Entering Passive Mode (a1,a2,a3,a4,p1,p2)
 +
 +    LPSV is RFC1639, expect:
 +    228 Entering Long Passive Mode (4,4,a1,a2,a3,a4,2,p1,p2)
 +
 +    EPSV is RFC2428, expect:
 +    229 Entering Extended Passive Mode (|||port|)
 +
 +  */
 +
 +  static const char mode[][5] = { "EPSV", "PASV" };
 +  int modeoff;
 +
 +#ifdef PF_INET6
 +  if(!conn->bits.ftp_use_epsv && conn->bits.ipv6)
 +    /* EPSV is disabled but we are connected to a IPv6 host, so we ignore the
 +       request and enable EPSV again! */
 +    conn->bits.ftp_use_epsv = TRUE;
 +#endif
 +
 +  modeoff = conn->bits.ftp_use_epsv?0:1;
 +
 +  PPSENDF(&ftpc->pp, "%s", mode[modeoff]);
 +
 +  ftpc->count1 = modeoff;
 +  state(conn, FTP_PASV);
 +  infof(conn->data, "Connect data stream passively\n");
 +
 +  return result;
 +}
 +
 +/*
 + * ftp_state_prepare_transfer() starts PORT, PASV or PRET etc.
 + *
 + * REST is the last command in the chain of commands when a "head"-like
 + * request is made. Thus, if an actual transfer is to be made this is where we
 + * take off for real.
 + */
 +static CURLcode ftp_state_prepare_transfer(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct Curl_easy *data = conn->data;
 +
 +  if(ftp->transfer != FTPTRANSFER_BODY) {
 +    /* doesn't transfer any data */
 +
 +    /* still possibly do PRE QUOTE jobs */
 +    state(conn, FTP_RETR_PREQUOTE);
 +    result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
 +  }
 +  else if(data->set.ftp_use_port) {
 +    /* We have chosen to use the PORT (or similar) command */
 +    result = ftp_state_use_port(conn, EPRT);
 +  }
 +  else {
 +    /* We have chosen (this is default) to use the PASV (or similar) command */
 +    if(data->set.ftp_use_pret) {
 +      /* The user has requested that we send a PRET command
 +         to prepare the server for the upcoming PASV */
 +      if(!conn->proto.ftpc.file) {
 +        PPSENDF(&conn->proto.ftpc.pp, "PRET %s",
 +                data->set.str[STRING_CUSTOMREQUEST]?
 +                data->set.str[STRING_CUSTOMREQUEST]:
 +                (data->set.ftp_list_only?"NLST":"LIST"));
 +      }
 +      else if(data->set.upload) {
 +        PPSENDF(&conn->proto.ftpc.pp, "PRET STOR %s", conn->proto.ftpc.file);
 +      }
 +      else {
 +        PPSENDF(&conn->proto.ftpc.pp, "PRET RETR %s", conn->proto.ftpc.file);
 +      }
 +      state(conn, FTP_PRET);
 +    }
 +    else {
 +      result = ftp_state_use_pasv(conn);
 +    }
 +  }
 +  return result;
 +}
 +
 +static CURLcode ftp_state_rest(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if((ftp->transfer != FTPTRANSFER_BODY) && ftpc->file) {
 +    /* if a "head"-like request is being made (on a file) */
 +
 +    /* Determine if server can respond to REST command and therefore
 +       whether it supports range */
 +    PPSENDF(&conn->proto.ftpc.pp, "REST %d", 0);
 +
 +    state(conn, FTP_REST);
 +  }
 +  else
 +    result = ftp_state_prepare_transfer(conn);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_size(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if((ftp->transfer == FTPTRANSFER_INFO) && ftpc->file) {
 +    /* if a "head"-like request is being made (on a file) */
 +
 +    /* we know ftpc->file is a valid pointer to a file name */
 +    PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
 +
 +    state(conn, FTP_SIZE);
 +  }
 +  else
 +    result = ftp_state_rest(conn);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_list(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +
 +  /* If this output is to be machine-parsed, the NLST command might be better
 +     to use, since the LIST command output is not specified or standard in any
 +     way. It has turned out that the NLST list output is not the same on all
 +     servers either... */
 +
 +  /*
 +     if FTPFILE_NOCWD was specified, we are currently in
 +     the user's home directory, so we should add the path
 +     as argument for the LIST / NLST / or custom command.
 +     Whether the server will support this, is uncertain.
 +
 +     The other ftp_filemethods will CWD into dir/dir/ first and
 +     then just do LIST (in that case: nothing to do here)
 +  */
 +  char *cmd, *lstArg, *slashPos;
 +
 +  lstArg = NULL;
 +  if((data->set.ftp_filemethod == FTPFILE_NOCWD) &&
 +     data->state.path &&
 +     data->state.path[0] &&
 +     strchr(data->state.path, '/')) {
 +
 +    lstArg = strdup(data->state.path);
 +    if(!lstArg)
 +      return CURLE_OUT_OF_MEMORY;
 +
 +    /* Check if path does not end with /, as then we cut off the file part */
-     if(lstArg[strlen(lstArg) - 1] != '/')  {
++    if(lstArg[strlen(lstArg) - 1] != '/') {
 +
 +      /* chop off the file part if format is dir/dir/file */
 +      slashPos = strrchr(lstArg, '/');
 +      if(slashPos)
-         *(slashPos+1) = '\0';
++        *(slashPos + 1) = '\0';
 +    }
 +  }
 +
 +  cmd = aprintf("%s%s%s",
 +                data->set.str[STRING_CUSTOMREQUEST]?
 +                data->set.str[STRING_CUSTOMREQUEST]:
 +                (data->set.ftp_list_only?"NLST":"LIST"),
 +                lstArg? " ": "",
 +                lstArg? lstArg: "");
 +
 +  if(!cmd) {
 +    free(lstArg);
 +    return CURLE_OUT_OF_MEMORY;
 +  }
 +
 +  result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", cmd);
 +
 +  free(lstArg);
 +  free(cmd);
 +
 +  if(result)
 +    return result;
 +
 +  state(conn, FTP_LIST);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_retr_prequote(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +
 +  /* We've sent the TYPE, now we must send the list of prequote strings */
 +
 +  result = ftp_state_quote(conn, TRUE, FTP_RETR_PREQUOTE);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_stor_prequote(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +
 +  /* We've sent the TYPE, now we must send the list of prequote strings */
 +
 +  result = ftp_state_quote(conn, TRUE, FTP_STOR_PREQUOTE);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_type(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  /* If we have selected NOBODY and HEADER, it means that we only want file
 +     information. Which in FTP can't be much more than the file size and
 +     date. */
 +  if(data->set.opt_no_body && ftpc->file &&
 +     ftp_need_type(conn, data->set.prefer_ascii)) {
 +    /* The SIZE command is _not_ RFC 959 specified, and therefor many servers
 +       may not support it! It is however the only way we have to get a file's
 +       size! */
 +
 +    ftp->transfer = FTPTRANSFER_INFO;
 +    /* this means no actual transfer will be made */
 +
 +    /* Some servers return different sizes for different modes, and thus we
 +       must set the proper type before we check the size */
 +    result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_TYPE);
 +    if(result)
 +      return result;
 +  }
 +  else
 +    result = ftp_state_size(conn);
 +
 +  return result;
 +}
 +
 +/* This is called after the CWD commands have been done in the beginning of
 +   the DO phase */
 +static CURLcode ftp_state_mdtm(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  /* Requested time of file or time-depended transfer? */
 +  if((data->set.get_filetime || data->set.timecondition) && ftpc->file) {
 +
 +    /* we have requested to get the modified-time of the file, this is a white
 +       spot as the MDTM is not mentioned in RFC959 */
 +    PPSENDF(&ftpc->pp, "MDTM %s", ftpc->file);
 +
 +    state(conn, FTP_MDTM);
 +  }
 +  else
 +    result = ftp_state_type(conn);
 +
 +  return result;
 +}
 +
 +
 +/* This is called after the TYPE and possible quote commands have been sent */
 +static CURLcode ftp_state_ul_setup(struct connectdata *conn,
 +                                   bool sizechecked)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  int seekerr = CURL_SEEKFUNC_OK;
 +
 +  if((data->state.resume_from && !sizechecked) ||
 +     ((data->state.resume_from > 0) && sizechecked)) {
 +    /* we're about to continue the uploading of a file */
 +    /* 1. get already existing file's size. We use the SIZE command for this
 +       which may not exist in the server!  The SIZE command is not in
 +       RFC959. */
 +
 +    /* 2. This used to set REST. But since we can do append, we
 +       don't another ftp command. We just skip the source file
 +       offset and then we APPEND the rest on the file instead */
 +
 +    /* 3. pass file-size number of bytes in the source file */
 +    /* 4. lower the infilesize counter */
 +    /* => transfer as usual */
 +
 +    if(data->state.resume_from < 0) {
 +      /* Got no given size to start from, figure it out */
 +      PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
 +      state(conn, FTP_STOR_SIZE);
 +      return result;
 +    }
 +
 +    /* enable append */
 +    data->set.ftp_append = TRUE;
 +
 +    /* Let's read off the proper amount of bytes from the input. */
 +    if(conn->seek_func) {
 +      seekerr = conn->seek_func(conn->seek_client, data->state.resume_from,
 +                                SEEK_SET);
 +    }
 +
 +    if(seekerr != CURL_SEEKFUNC_OK) {
-       curl_off_t passed=0;
++      curl_off_t passed = 0;
 +      if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
 +        failf(data, "Could not seek stream");
 +        return CURLE_FTP_COULDNT_USE_REST;
 +      }
 +      /* seekerr == CURL_SEEKFUNC_CANTSEEK (can't seek to offset) */
 +      do {
 +        size_t readthisamountnow =
 +          (data->state.resume_from - passed > data->set.buffer_size) ?
 +          (size_t)data->set.buffer_size :
 +          curlx_sotouz(data->state.resume_from - passed);
 +
 +        size_t actuallyread =
 +          data->state.fread_func(data->state.buffer, 1, readthisamountnow,
 +                                 data->state.in);
 +
 +        passed += actuallyread;
 +        if((actuallyread == 0) || (actuallyread > readthisamountnow)) {
 +          /* this checks for greater-than only to make sure that the
 +             CURL_READFUNC_ABORT return code still aborts */
 +          failf(data, "Failed to read data");
 +          return CURLE_FTP_COULDNT_USE_REST;
 +        }
 +      } while(passed < data->state.resume_from);
 +    }
 +    /* now, decrease the size of the read */
 +    if(data->state.infilesize>0) {
 +      data->state.infilesize -= data->state.resume_from;
 +
 +      if(data->state.infilesize <= 0) {
 +        infof(data, "File already completely uploaded\n");
 +
 +        /* no data to transfer */
 +        Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
 +
 +        /* Set ->transfer so that we won't get any error in
 +         * ftp_done() because we didn't transfer anything! */
 +        ftp->transfer = FTPTRANSFER_NONE;
 +
 +        state(conn, FTP_STOP);
 +        return CURLE_OK;
 +      }
 +    }
 +    /* we've passed, proceed as normal */
 +  } /* resume_from */
 +
 +  PPSENDF(&ftpc->pp, data->set.ftp_append?"APPE %s":"STOR %s",
 +          ftpc->file);
 +
 +  state(conn, FTP_STOR);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_quote(struct connectdata *conn,
 +                                bool init,
 +                                ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
-   bool quote=FALSE;
++  bool quote = FALSE;
 +  struct curl_slist *item;
 +
 +  switch(instate) {
 +  case FTP_QUOTE:
 +  default:
 +    item = data->set.quote;
 +    break;
 +  case FTP_RETR_PREQUOTE:
 +  case FTP_STOR_PREQUOTE:
 +    item = data->set.prequote;
 +    break;
 +  case FTP_POSTQUOTE:
 +    item = data->set.postquote;
 +    break;
 +  }
 +
 +  /*
 +   * This state uses:
 +   * 'count1' to iterate over the commands to send
 +   * 'count2' to store whether to allow commands to fail
 +   */
 +
 +  if(init)
 +    ftpc->count1 = 0;
 +  else
 +    ftpc->count1++;
 +
 +  if(item) {
 +    int i = 0;
 +
 +    /* Skip count1 items in the linked list */
 +    while((i< ftpc->count1) && item) {
 +      item = item->next;
 +      i++;
 +    }
 +    if(item) {
 +      char *cmd = item->data;
 +      if(cmd[0] == '*') {
 +        cmd++;
 +        ftpc->count2 = 1; /* the sent command is allowed to fail */
 +      }
 +      else
 +        ftpc->count2 = 0; /* failure means cancel operation */
 +
 +      PPSENDF(&ftpc->pp, "%s", cmd);
 +      state(conn, instate);
 +      quote = TRUE;
 +    }
 +  }
 +
 +  if(!quote) {
 +    /* No more quote to send, continue to ... */
 +    switch(instate) {
 +    case FTP_QUOTE:
 +    default:
 +      result = ftp_state_cwd(conn);
 +      break;
 +    case FTP_RETR_PREQUOTE:
 +      if(ftp->transfer != FTPTRANSFER_BODY)
 +        state(conn, FTP_STOP);
 +      else {
 +        if(ftpc->known_filesize != -1) {
 +          Curl_pgrsSetDownloadSize(data, ftpc->known_filesize);
 +          result = ftp_state_retr(conn, ftpc->known_filesize);
 +        }
 +        else {
 +          if(data->set.ignorecl) {
 +            /* This code is to support download of growing files.  It prevents
 +               the state machine from requesting the file size from the
 +               server.  With an unknown file size the download continues until
 +               the server terminates it, otherwise the client stops if the
 +               received byte count exceeds the reported file size.  Set option
 +               CURLOPT_IGNORE_CONTENT_LENGTH to 1 to enable this behavior.*/
 +            PPSENDF(&ftpc->pp, "RETR %s", ftpc->file);
 +            state(conn, FTP_RETR);
 +          }
 +          else {
 +            PPSENDF(&ftpc->pp, "SIZE %s", ftpc->file);
 +            state(conn, FTP_RETR_SIZE);
 +          }
 +        }
 +      }
 +      break;
 +    case FTP_STOR_PREQUOTE:
 +      result = ftp_state_ul_setup(conn, FALSE);
 +      break;
 +    case FTP_POSTQUOTE:
 +      break;
 +    }
 +  }
 +
 +  return result;
 +}
 +
 +/* called from ftp_state_pasv_resp to switch to PASV in case of EPSV
 +   problems */
 +static CURLcode ftp_epsv_disable(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +
 +  if(conn->bits.ipv6) {
 +    /* We can't disable EPSV when doing IPv6, so this is instead a fail */
 +    failf(conn->data, "Failed EPSV attempt, exiting\n");
 +    return CURLE_WEIRD_SERVER_REPLY;
 +  }
 +
 +  infof(conn->data, "Failed EPSV attempt. Disabling EPSV\n");
 +  /* disable it for next transfer */
 +  conn->bits.ftp_use_epsv = FALSE;
 +  conn->data->state.errorbuf = FALSE; /* allow error message to get
 +                                         rewritten */
 +  PPSENDF(&conn->proto.ftpc.pp, "%s", "PASV");
 +  conn->proto.ftpc.count1++;
 +  /* remain in/go to the FTP_PASV state */
 +  state(conn, FTP_PASV);
 +  return result;
 +}
 +
 +
 +static char *control_address(struct connectdata *conn)
 +{
 +  /* Returns the control connection IP address.
 +     If a proxy tunnel is used, returns the original host name instead, because
 +     the effective control connection address is the proxy address,
 +     not the ftp host. */
 +  if(conn->bits.tunnel_proxy || conn->bits.socksproxy)
 +    return conn->host.name;
 +
 +  return conn->ip_addr_str;
 +}
 +
 +static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
 +                                    int ftpcode)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  CURLcode result;
-   struct Curl_easy *data=conn->data;
-   struct Curl_dns_entry *addr=NULL;
++  struct Curl_easy *data = conn->data;
++  struct Curl_dns_entry *addr = NULL;
 +  int rc;
 +  unsigned short connectport; /* the local port connect() should use! */
-   char *str=&data->state.buffer[4];  /* start on the first letter */
++  char *str = &data->state.buffer[4];  /* start on the first letter */
 +
 +  /* if we come here again, make sure the former name is cleared */
 +  Curl_safefree(ftpc->newhost);
 +
 +  if((ftpc->count1 == 0) &&
 +     (ftpcode == 229)) {
 +    /* positive EPSV response */
 +    char *ptr = strchr(str, '(');
 +    if(ptr) {
 +      unsigned int num;
 +      char separator[4];
 +      ptr++;
 +      if(5 == sscanf(ptr, "%c%c%c%u%c",
 +                     &separator[0],
 +                     &separator[1],
 +                     &separator[2],
 +                     &num,
 +                     &separator[3])) {
 +        const char sep1 = separator[0];
 +        int i;
 +
 +        /* The four separators should be identical, or else this is an oddly
 +           formatted reply and we bail out immediately. */
-         for(i=1; i<4; i++) {
++        for(i = 1; i<4; i++) {
 +          if(separator[i] != sep1) {
-             ptr=NULL; /* set to NULL to signal error */
++            ptr = NULL; /* set to NULL to signal error */
 +            break;
 +          }
 +        }
 +        if(num > 0xffff) {
 +          failf(data, "Illegal port number in EPSV reply");
 +          return CURLE_FTP_WEIRD_PASV_REPLY;
 +        }
 +        if(ptr) {
 +          ftpc->newport = (unsigned short)(num & 0xffff);
 +          ftpc->newhost = strdup(control_address(conn));
 +          if(!ftpc->newhost)
 +            return CURLE_OUT_OF_MEMORY;
 +        }
 +      }
 +      else
-         ptr=NULL;
++        ptr = NULL;
 +    }
 +    if(!ptr) {
 +      failf(data, "Weirdly formatted EPSV reply");
 +      return CURLE_FTP_WEIRD_PASV_REPLY;
 +    }
 +  }
 +  else if((ftpc->count1 == 1) &&
 +          (ftpcode == 227)) {
 +    /* positive PASV response */
 +    int ip[4];
 +    int port[2];
 +
 +    /*
 +     * Scan for a sequence of six comma-separated numbers and use them as
 +     * IP+port indicators.
 +     *
 +     * Found reply-strings include:
 +     * "227 Entering Passive Mode (127,0,0,1,4,51)"
 +     * "227 Data transfer will passively listen to 127,0,0,1,4,51"
 +     * "227 Entering passive mode. 127,0,0,1,4,51"
 +     */
 +    while(*str) {
 +      if(6 == sscanf(str, "%d,%d,%d,%d,%d,%d",
 +                     &ip[0], &ip[1], &ip[2], &ip[3],
 +                     &port[0], &port[1]))
 +        break;
 +      str++;
 +    }
 +
 +    if(!*str) {
 +      failf(data, "Couldn't interpret the 227-response");
 +      return CURLE_FTP_WEIRD_227_FORMAT;
 +    }
 +
 +    /* we got OK from server */
 +    if(data->set.ftp_skip_ip) {
 +      /* told to ignore the remotely given IP but instead use the host we used
 +         for the control connection */
 +      infof(data, "Skip %d.%d.%d.%d for data connection, re-use %s instead\n",
 +            ip[0], ip[1], ip[2], ip[3],
 +            conn->host.name);
 +      ftpc->newhost = strdup(control_address(conn));
 +    }
 +    else
 +      ftpc->newhost = aprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
 +
 +    if(!ftpc->newhost)
 +      return CURLE_OUT_OF_MEMORY;
 +
 +    ftpc->newport = (unsigned short)(((port[0]<<8) + port[1]) & 0xffff);
 +  }
 +  else if(ftpc->count1 == 0) {
 +    /* EPSV failed, move on to PASV */
 +    return ftp_epsv_disable(conn);
 +  }
 +  else {
 +    failf(data, "Bad PASV/EPSV response: %03d", ftpcode);
 +    return CURLE_FTP_WEIRD_PASV_REPLY;
 +  }
 +
 +  if(conn->bits.proxy) {
 +    /*
 +     * This connection uses a proxy and we need to connect to the proxy again
 +     * here. We don't want to rely on a former host lookup that might've
 +     * expired now, instead we remake the lookup here and now!
 +     */
 +    const char * const host_name = conn->bits.socksproxy ?
 +      conn->socks_proxy.host.name : conn->http_proxy.host.name;
 +    rc = Curl_resolv(conn, host_name, (int)conn->port, &addr);
 +    if(rc == CURLRESOLV_PENDING)
 +      /* BLOCKING, ignores the return code but 'addr' will be NULL in
 +         case of failure */
 +      (void)Curl_resolver_wait_resolv(conn, &addr);
 +
 +    connectport =
 +      (unsigned short)conn->port; /* we connect to the proxy's port */
 +
 +    if(!addr) {
 +      failf(data, "Can't resolve proxy host %s:%hu", host_name, connectport);
 +      return CURLE_COULDNT_RESOLVE_PROXY;
 +    }
 +  }
 +  else {
 +    /* normal, direct, ftp connection */
 +    rc = Curl_resolv(conn, ftpc->newhost, ftpc->newport, &addr);
 +    if(rc == CURLRESOLV_PENDING)
 +      /* BLOCKING */
 +      (void)Curl_resolver_wait_resolv(conn, &addr);
 +
 +    connectport = ftpc->newport; /* we connect to the remote port */
 +
 +    if(!addr) {
 +      failf(data, "Can't resolve new host %s:%hu", ftpc->newhost, connectport);
 +      return CURLE_FTP_CANT_GET_HOST;
 +    }
 +  }
 +
 +  conn->bits.tcpconnect[SECONDARYSOCKET] = FALSE;
 +  result = Curl_connecthost(conn, addr);
 +
 +  if(result) {
 +    Curl_resolv_unlock(data, addr); /* we're done using this address */
 +    if(ftpc->count1 == 0 && ftpcode == 229)
 +      return ftp_epsv_disable(conn);
 +
 +    return result;
 +  }
 +
 +
 +  /*
 +   * When this is used from the multi interface, this might've returned with
 +   * the 'connected' set to FALSE and thus we are now awaiting a non-blocking
 +   * connect to connect.
 +   */
 +
 +  if(data->set.verbose)
 +    /* this just dumps information about this second connection */
 +    ftp_pasv_verbose(conn, addr->addr, ftpc->newhost, connectport);
 +
 +  Curl_resolv_unlock(data, addr); /* we're done using this address */
 +
 +  Curl_safefree(conn->secondaryhostname);
 +  conn->secondary_port = ftpc->newport;
 +  conn->secondaryhostname = strdup(ftpc->newhost);
 +  if(!conn->secondaryhostname)
 +    return CURLE_OUT_OF_MEMORY;
 +
 +  conn->bits.do_more = TRUE;
 +  state(conn, FTP_STOP); /* this phase is completed */
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_port_resp(struct connectdata *conn,
 +                                    int ftpcode)
 +{
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  ftpport fcmd = (ftpport)ftpc->count1;
 +  CURLcode result = CURLE_OK;
 +
 +  /* The FTP spec tells a positive response should have code 200.
 +     Be more permissive here to tolerate deviant servers. */
 +  if(ftpcode / 100 != 2) {
 +    /* the command failed */
 +
 +    if(EPRT == fcmd) {
 +      infof(data, "disabling EPRT usage\n");
 +      conn->bits.ftp_use_eprt = FALSE;
 +    }
 +    fcmd++;
 +
 +    if(fcmd == DONE) {
 +      failf(data, "Failed to do PORT");
 +      result = CURLE_FTP_PORT_FAILED;
 +    }
 +    else
 +      /* try next */
 +      result = ftp_state_use_port(conn, fcmd);
 +  }
 +  else {
 +    infof(data, "Connect data stream actively\n");
 +    state(conn, FTP_STOP); /* end of DO phase */
 +    result = ftp_dophase_done(conn, FALSE);
 +  }
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
 +                                    int ftpcode)
 +{
 +  CURLcode result = CURLE_OK;
-   struct Curl_easy *data=conn->data;
++  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  switch(ftpcode) {
 +  case 213:
 +    {
 +      /* we got a time. Format should be: "YYYYMMDDHHMMSS[.sss]" where the
 +         last .sss part is optional and means fractions of a second */
 +      int year, month, day, hour, minute, second;
 +      if(6 == sscanf(&data->state.buffer[4], "%04d%02d%02d%02d%02d%02d",
 +                     &year, &month, &day, &hour, &minute, &second)) {
 +        /* we have a time, reformat it */
 +        char timebuf[24];
-         time_t secs=time(NULL);
++        time_t secs = time(NULL);
 +
 +        snprintf(timebuf, sizeof(timebuf),
 +                 "%04d%02d%02d %02d:%02d:%02d GMT",
 +                 year, month, day, hour, minute, second);
 +        /* now, convert this into a time() value: */
 +        data->info.filetime = (long)curl_getdate(timebuf, &secs);
 +      }
 +
 +#ifdef CURL_FTP_HTTPSTYLE_HEAD
 +      /* If we asked for a time of the file and we actually got one as well,
 +         we "emulate" a HTTP-style header in our output. */
 +
 +      if(data->set.opt_no_body &&
 +         ftpc->file &&
 +         data->set.get_filetime &&
-          (data->info.filetime>=0) ) {
++         (data->info.filetime >= 0) ) {
 +        char headerbuf[128];
 +        time_t filetime = (time_t)data->info.filetime;
 +        struct tm buffer;
 +        const struct tm *tm = &buffer;
 +
 +        result = Curl_gmtime(filetime, &buffer);
 +        if(result)
 +          return result;
 +
 +        /* format: "Tue, 15 Nov 1994 12:45:26" */
 +        snprintf(headerbuf, sizeof(headerbuf),
 +                 "Last-Modified: %s, %02d %s %4d %02d:%02d:%02d GMT\r\n",
 +                 Curl_wkday[tm->tm_wday?tm->tm_wday-1:6],
 +                 tm->tm_mday,
 +                 Curl_month[tm->tm_mon],
 +                 tm->tm_year + 1900,
 +                 tm->tm_hour,
 +                 tm->tm_min,
 +                 tm->tm_sec);
 +        result = Curl_client_write(conn, CLIENTWRITE_BOTH, headerbuf, 0);
 +        if(result)
 +          return result;
 +      } /* end of a ridiculous amount of conditionals */
 +#endif
 +    }
 +    break;
 +  default:
 +    infof(data, "unsupported MDTM reply format\n");
 +    break;
 +  case 550: /* "No such file or directory" */
 +    failf(data, "Given file does not exist");
 +    result = CURLE_FTP_COULDNT_RETR_FILE;
 +    break;
 +  }
 +
 +  if(data->set.timecondition) {
 +    if((data->info.filetime > 0) && (data->set.timevalue > 0)) {
 +      switch(data->set.timecondition) {
 +      case CURL_TIMECOND_IFMODSINCE:
 +      default:
 +        if(data->info.filetime <= data->set.timevalue) {
 +          infof(data, "The requested document is not new enough\n");
 +          ftp->transfer = FTPTRANSFER_NONE; /* mark to not transfer data */
 +          data->info.timecond = TRUE;
 +          state(conn, FTP_STOP);
 +          return CURLE_OK;
 +        }
 +        break;
 +      case CURL_TIMECOND_IFUNMODSINCE:
 +        if(data->info.filetime > data->set.timevalue) {
 +          infof(data, "The requested document is not old enough\n");
 +          ftp->transfer = FTPTRANSFER_NONE; /* mark to not transfer data */
 +          data->info.timecond = TRUE;
 +          state(conn, FTP_STOP);
 +          return CURLE_OK;
 +        }
 +        break;
 +      } /* switch */
 +    }
 +    else {
 +      infof(data, "Skipping time comparison\n");
 +    }
 +  }
 +
 +  if(!result)
 +    result = ftp_state_type(conn);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_type_resp(struct connectdata *conn,
 +                                    int ftpcode,
 +                                    ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
-   struct Curl_easy *data=conn->data;
++  struct Curl_easy *data = conn->data;
 +
 +  if(ftpcode/100 != 2) {
 +    /* "sasserftpd" and "(u)r(x)bot ftpd" both responds with 226 after a
 +       successful 'TYPE I'. While that is not as RFC959 says, it is still a
 +       positive response code and we allow that. */
 +    failf(data, "Couldn't set desired mode");
 +    return CURLE_FTP_COULDNT_SET_TYPE;
 +  }
 +  if(ftpcode != 200)
 +    infof(data, "Got a %03d response code instead of the assumed 200\n",
 +          ftpcode);
 +
 +  if(instate == FTP_TYPE)
 +    result = ftp_state_size(conn);
 +  else if(instate == FTP_LIST_TYPE)
 +    result = ftp_state_list(conn);
 +  else if(instate == FTP_RETR_TYPE)
 +    result = ftp_state_retr_prequote(conn);
 +  else if(instate == FTP_STOR_TYPE)
 +    result = ftp_state_stor_prequote(conn);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_retr(struct connectdata *conn,
 +                                         curl_off_t filesize)
 +{
 +  CURLcode result = CURLE_OK;
-   struct Curl_easy *data=conn->data;
++  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if(data->set.max_filesize && (filesize > data->set.max_filesize)) {
 +    failf(data, "Maximum file size exceeded");
 +    return CURLE_FILESIZE_EXCEEDED;
 +  }
 +  ftp->downloadsize = filesize;
 +
 +  if(data->state.resume_from) {
 +    /* We always (attempt to) get the size of downloads, so it is done before
 +       this even when not doing resumes. */
 +    if(filesize == -1) {
 +      infof(data, "ftp server doesn't support SIZE\n");
 +      /* We couldn't get the size and therefore we can't know if there really
 +         is a part of the file left to get, although the server will just
 +         close the connection when we start the connection so it won't cause
 +         us any harm, just not make us exit as nicely. */
 +    }
 +    else {
 +      /* We got a file size report, so we check that there actually is a
 +         part of the file left to get, or else we go home.  */
 +      if(data->state.resume_from< 0) {
 +        /* We're supposed to download the last abs(from) bytes */
 +        if(filesize < -data->state.resume_from) {
 +          failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
 +                ") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
 +                data->state.resume_from, filesize);
 +          return CURLE_BAD_DOWNLOAD_RESUME;
 +        }
 +        /* convert to size to download */
 +        ftp->downloadsize = -data->state.resume_from;
 +        /* download from where? */
 +        data->state.resume_from = filesize - ftp->downloadsize;
 +      }
 +      else {
 +        if(filesize < data->state.resume_from) {
 +          failf(data, "Offset (%" CURL_FORMAT_CURL_OFF_T
 +                ") was beyond file size (%" CURL_FORMAT_CURL_OFF_T ")",
 +                data->state.resume_from, filesize);
 +          return CURLE_BAD_DOWNLOAD_RESUME;
 +        }
 +        /* Now store the number of bytes we are expected to download */
 +        ftp->downloadsize = filesize-data->state.resume_from;
 +      }
 +    }
 +
 +    if(ftp->downloadsize == 0) {
 +      /* no data to transfer */
 +      Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
 +      infof(data, "File already completely downloaded\n");
 +
 +      /* Set ->transfer so that we won't get any error in ftp_done()
 +       * because we didn't transfer the any file */
 +      ftp->transfer = FTPTRANSFER_NONE;
 +      state(conn, FTP_STOP);
 +      return CURLE_OK;
 +    }
 +
 +    /* Set resume file transfer offset */
 +    infof(data, "Instructs server to resume from offset %"
 +          CURL_FORMAT_CURL_OFF_T "\n", data->state.resume_from);
 +
 +    PPSENDF(&ftpc->pp, "REST %" CURL_FORMAT_CURL_OFF_T,
 +            data->state.resume_from);
 +
 +    state(conn, FTP_RETR_REST);
 +  }
 +  else {
 +    /* no resume */
 +    PPSENDF(&ftpc->pp, "RETR %s", ftpc->file);
 +    state(conn, FTP_RETR);
 +  }
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_size_resp(struct connectdata *conn,
 +                                    int ftpcode,
 +                                    ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
-   struct Curl_easy *data=conn->data;
-   curl_off_t filesize;
++  struct Curl_easy *data = conn->data;
++  curl_off_t filesize = -1;
 +  char *buf = data->state.buffer;
 +
 +  /* get the size from the ascii string: */
-   filesize = (ftpcode == 213)?curlx_strtoofft(buf+4, NULL, 0):-1;
++  if(ftpcode == 213)
++    /* ignores parsing errors, which will make the size remain unknown */
++    (void)curlx_strtoofft(buf + 4, NULL, 0, &filesize);
 +
 +  if(instate == FTP_SIZE) {
 +#ifdef CURL_FTP_HTTPSTYLE_HEAD
 +    if(-1 != filesize) {
 +      char clbuf[128];
 +      snprintf(clbuf, sizeof(clbuf),
 +               "Content-Length: %" CURL_FORMAT_CURL_OFF_T "\r\n", filesize);
 +      result = Curl_client_write(conn, CLIENTWRITE_BOTH, clbuf, 0);
 +      if(result)
 +        return result;
 +    }
 +#endif
 +    Curl_pgrsSetDownloadSize(data, filesize);
 +    result = ftp_state_rest(conn);
 +  }
 +  else if(instate == FTP_RETR_SIZE) {
 +    Curl_pgrsSetDownloadSize(data, filesize);
 +    result = ftp_state_retr(conn, filesize);
 +  }
 +  else if(instate == FTP_STOR_SIZE) {
 +    data->state.resume_from = filesize;
 +    result = ftp_state_ul_setup(conn, TRUE);
 +  }
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_rest_resp(struct connectdata *conn,
 +                                    int ftpcode,
 +                                    ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  switch(instate) {
 +  case FTP_REST:
 +  default:
 +#ifdef CURL_FTP_HTTPSTYLE_HEAD
 +    if(ftpcode == 350) {
 +      char buffer[24]= { "Accept-ranges: bytes\r\n" };
 +      result = Curl_client_write(conn, CLIENTWRITE_BOTH, buffer, 0);
 +      if(result)
 +        return result;
 +    }
 +#endif
 +    result = ftp_state_prepare_transfer(conn);
 +    break;
 +
 +  case FTP_RETR_REST:
 +    if(ftpcode != 350) {
 +      failf(conn->data, "Couldn't use REST");
 +      result = CURLE_FTP_COULDNT_USE_REST;
 +    }
 +    else {
 +      PPSENDF(&ftpc->pp, "RETR %s", ftpc->file);
 +      state(conn, FTP_RETR);
 +    }
 +    break;
 +  }
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_state_stor_resp(struct connectdata *conn,
 +                                    int ftpcode, ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +
-   if(ftpcode>=400) {
++  if(ftpcode >= 400) {
 +    failf(data, "Failed FTP upload: %0d", ftpcode);
 +    state(conn, FTP_STOP);
 +    /* oops, we never close the sockets! */
 +    return CURLE_UPLOAD_FAILED;
 +  }
 +
 +  conn->proto.ftpc.state_saved = instate;
 +
 +  /* PORT means we are now awaiting the server to connect to us. */
 +  if(data->set.ftp_use_port) {
 +    bool connected;
 +
 +    state(conn, FTP_STOP); /* no longer in STOR state */
 +
 +    result = AllowServerConnect(conn, &connected);
 +    if(result)
 +      return result;
 +
 +    if(!connected) {
 +      struct ftp_conn *ftpc = &conn->proto.ftpc;
 +      infof(data, "Data conn was not available immediately\n");
 +      ftpc->wait_data_conn = TRUE;
 +    }
 +
 +    return CURLE_OK;
 +  }
 +  return InitiateTransfer(conn);
 +}
 +
 +/* for LIST and RETR responses */
 +static CURLcode ftp_state_get_resp(struct connectdata *conn,
 +                                    int ftpcode,
 +                                    ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +
 +  if((ftpcode == 150) || (ftpcode == 125)) {
 +
 +    /*
 +      A;
 +      150 Opening BINARY mode data connection for /etc/passwd (2241
 +      bytes).  (ok, the file is being transferred)
 +
 +      B:
 +      150 Opening ASCII mode data connection for /bin/ls
 +
 +      C:
 +      150 ASCII data connection for /bin/ls (137.167.104.91,37445) (0 bytes).
 +
 +      D:
 +      150 Opening ASCII mode data connection for [file] (0.0.0.0,0) (545 bytes)
 +
 +      E:
 +      125 Data connection already open; Transfer starting. */
 +
-     curl_off_t size=-1; /* default unknown size */
++    curl_off_t size = -1; /* default unknown size */
 +
 +
 +    /*
 +     * It appears that there are FTP-servers that return size 0 for files when
 +     * SIZE is used on the file while being in BINARY mode. To work around
 +     * that (stupid) behavior, we attempt to parse the RETR response even if
 +     * the SIZE returned size zero.
 +     *
 +     * Debugging help from Salvatore Sorrentino on February 26, 2003.
 +     */
 +
 +    if((instate != FTP_LIST) &&
 +       !data->set.prefer_ascii &&
 +       (ftp->downloadsize < 1)) {
 +      /*
 +       * It seems directory listings either don't show the size or very
 +       * often uses size 0 anyway. ASCII transfers may very well turn out
 +       * that the transferred amount of data is not the same as this line
 +       * tells, why using this number in those cases only confuses us.
 +       *
 +       * Example D above makes this parsing a little tricky */
 +      char *bytes;
 +      char *buf = data->state.buffer;
-       bytes=strstr(buf, " bytes");
++      bytes = strstr(buf, " bytes");
 +      if(bytes--) {
-         long in=(long)(bytes-buf);
++        long in = (long)(bytes-buf);
 +        /* this is a hint there is size information in there! ;-) */
 +        while(--in) {
 +          /* scan for the left parenthesis and break there */
 +          if('(' == *bytes)
 +            break;
 +          /* skip only digits */
 +          if(!ISDIGIT(*bytes)) {
-             bytes=NULL;
++            bytes = NULL;
 +            break;
 +          }
 +          /* one more estep backwards */
 +          bytes--;
 +        }
 +        /* if we have nothing but digits: */
 +        if(bytes++) {
 +          /* get the number! */
-           size = curlx_strtoofft(bytes, NULL, 0);
++          (void)curlx_strtoofft(bytes, NULL, 0, &size);
 +        }
 +      }
 +    }
 +    else if(ftp->downloadsize > -1)
 +      size = ftp->downloadsize;
 +
 +    if(size > data->req.maxdownload && data->req.maxdownload > 0)
 +      size = data->req.size = data->req.maxdownload;
 +    else if((instate != FTP_LIST) && (data->set.prefer_ascii))
 +      size = -1; /* kludge for servers that understate ASCII mode file size */
 +
 +    infof(data, "Maxdownload = %" CURL_FORMAT_CURL_OFF_T "\n",
 +          data->req.maxdownload);
 +
 +    if(instate != FTP_LIST)
 +      infof(data, "Getting file with size: %" CURL_FORMAT_CURL_OFF_T "\n",
 +            size);
 +
 +    /* FTP download: */
 +    conn->proto.ftpc.state_saved = instate;
 +    conn->proto.ftpc.retr_size_saved = size;
 +
 +    if(data->set.ftp_use_port) {
 +      bool connected;
 +
 +      result = AllowServerConnect(conn, &connected);
 +      if(result)
 +        return result;
 +
 +      if(!connected) {
 +        struct ftp_conn *ftpc = &conn->proto.ftpc;
 +        infof(data, "Data conn was not available immediately\n");
 +        state(conn, FTP_STOP);
 +        ftpc->wait_data_conn = TRUE;
 +      }
 +    }
 +    else
 +      return InitiateTransfer(conn);
 +  }
 +  else {
 +    if((instate == FTP_LIST) && (ftpcode == 450)) {
 +      /* simply no matching files in the dir listing */
 +      ftp->transfer = FTPTRANSFER_NONE; /* don't download anything */
 +      state(conn, FTP_STOP); /* this phase is over */
 +    }
 +    else {
 +      failf(data, "RETR response: %03d", ftpcode);
 +      return instate == FTP_RETR && ftpcode == 550?
 +        CURLE_REMOTE_FILE_NOT_FOUND:
 +        CURLE_FTP_COULDNT_RETR_FILE;
 +    }
 +  }
 +
 +  return result;
 +}
 +
 +/* after USER, PASS and ACCT */
 +static CURLcode ftp_state_loggedin(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +
 +  if(conn->ssl[FIRSTSOCKET].use) {
 +    /* PBSZ = PROTECTION BUFFER SIZE.
 +
 +    The 'draft-murray-auth-ftp-ssl' (draft 12, page 7) says:
 +
 +    Specifically, the PROT command MUST be preceded by a PBSZ
 +    command and a PBSZ command MUST be preceded by a successful
 +    security data exchange (the TLS negotiation in this case)
 +
 +    ... (and on page 8):
 +
 +    Thus the PBSZ command must still be issued, but must have a
 +    parameter of '0' to indicate that no buffering is taking place
 +    and the data connection should not be encapsulated.
 +    */
 +    PPSENDF(&conn->proto.ftpc.pp, "PBSZ %d", 0);
 +    state(conn, FTP_PBSZ);
 +  }
 +  else {
 +    result = ftp_state_pwd(conn);
 +  }
 +  return result;
 +}
 +
 +/* for USER and PASS responses */
 +static CURLcode ftp_state_user_resp(struct connectdata *conn,
 +                                    int ftpcode,
 +                                    ftpstate instate)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  (void)instate; /* no use for this yet */
 +
 +  /* some need password anyway, and others just return 2xx ignored */
 +  if((ftpcode == 331) && (ftpc->state == FTP_USER)) {
 +    /* 331 Password required for ...
 +       (the server requires to send the user's password too) */
 +    PPSENDF(&ftpc->pp, "PASS %s", ftp->passwd?ftp->passwd:"");
 +    state(conn, FTP_PASS);
 +  }
 +  else if(ftpcode/100 == 2) {
 +    /* 230 User ... logged in.
 +       (the user logged in with or without password) */
 +    result = ftp_state_loggedin(conn);
 +  }
 +  else if(ftpcode == 332) {
 +    if(data->set.str[STRING_FTP_ACCOUNT]) {
 +      PPSENDF(&ftpc->pp, "ACCT %s", data->set.str[STRING_FTP_ACCOUNT]);
 +      state(conn, FTP_ACCT);
 +    }
 +    else {
 +      failf(data, "ACCT requested but none available");
 +      result = CURLE_LOGIN_DENIED;
 +    }
 +  }
 +  else {
 +    /* All other response codes, like:
 +
 +    530 User ... access denied
 +    (the server denies to log the specified user) */
 +
 +    if(conn->data->set.str[STRING_FTP_ALTERNATIVE_TO_USER] &&
 +        !conn->data->state.ftp_trying_alternative) {
 +      /* Ok, USER failed.  Let's try the supplied command. */
 +      PPSENDF(&conn->proto.ftpc.pp, "%s",
 +              conn->data->set.str[STRING_FTP_ALTERNATIVE_TO_USER]);
 +      conn->data->state.ftp_trying_alternative = TRUE;
 +      state(conn, FTP_USER);
 +      result = CURLE_OK;
 +    }
 +    else {
 +      failf(data, "Access denied: %03d", ftpcode);
 +      result = CURLE_LOGIN_DENIED;
 +    }
 +  }
 +  return result;
 +}
 +
 +/* for ACCT response */
 +static CURLcode ftp_state_acct_resp(struct connectdata *conn,
 +                                    int ftpcode)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct Curl_easy *data = conn->data;
 +  if(ftpcode != 230) {
 +    failf(data, "ACCT rejected by server: %03d", ftpcode);
 +    result = CURLE_FTP_WEIRD_PASS_REPLY; /* FIX */
 +  }
 +  else
 +    result = ftp_state_loggedin(conn);
 +
 +  return result;
 +}
 +
 +
 +static CURLcode ftp_statemach_act(struct connectdata *conn)
 +{
 +  CURLcode result;
 +  curl_socket_t sock = conn->sock[FIRSTSOCKET];
-   struct Curl_easy *data=conn->data;
++  struct Curl_easy *data = conn->data;
 +  int ftpcode;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +  static const char ftpauth[][4]  = { "SSL", "TLS" };
 +  size_t nread = 0;
 +
 +  if(pp->sendleft)
 +    return Curl_pp_flushsend(pp);
 +
 +  result = ftp_readresp(sock, pp, &ftpcode, &nread);
 +  if(result)
 +    return result;
 +
 +  if(ftpcode) {
 +    /* we have now received a full FTP server response */
 +    switch(ftpc->state) {
 +    case FTP_WAIT220:
 +      if(ftpcode == 230)
 +        /* 230 User logged in - already! */
 +        return ftp_state_user_resp(conn, ftpcode, ftpc->state);
 +      else if(ftpcode != 220) {
 +        failf(data, "Got a %03d ftp-server response when 220 was expected",
 +              ftpcode);
 +        return CURLE_WEIRD_SERVER_REPLY;
 +      }
 +
 +      /* We have received a 220 response fine, now we proceed. */
 +#ifdef HAVE_GSSAPI
 +      if(data->set.krb) {
 +        /* If not anonymous login, try a secure login. Note that this
 +           procedure is still BLOCKING. */
 +
 +        Curl_sec_request_prot(conn, "private");
 +        /* We set private first as default, in case the line below fails to
 +           set a valid level */
 +        Curl_sec_request_prot(conn, data->set.str[STRING_KRB_LEVEL]);
 +
 +        if(Curl_sec_login(conn))
 +          infof(data, "Logging in with password in cleartext!\n");
 +        else
 +          infof(data, "Authentication successful\n");
 +      }
 +#endif
 +
 +      if(data->set.use_ssl &&
 +         (!conn->ssl[FIRSTSOCKET].use ||
 +          (conn->bits.proxy_ssl_connected[FIRSTSOCKET] &&
 +           !conn->proxy_ssl[FIRSTSOCKET].use))) {
 +        /* We don't have a SSL/TLS connection yet, but FTPS is
 +           requested. Try a FTPS connection now */
 +
-         ftpc->count3=0;
++        ftpc->count3 = 0;
 +        switch(data->set.ftpsslauth) {
 +        case CURLFTPAUTH_DEFAULT:
 +        case CURLFTPAUTH_SSL:
 +          ftpc->count2 = 1; /* add one to get next */
 +          ftpc->count1 = 0;
 +          break;
 +        case CURLFTPAUTH_TLS:
 +          ftpc->count2 = -1; /* subtract one to get next */
 +          ftpc->count1 = 1;
 +          break;
 +        default:
 +          failf(data, "unsupported parameter to CURLOPT_FTPSSLAUTH: %d",
 +                (int)data->set.ftpsslauth);
 +          return CURLE_UNKNOWN_OPTION; /* we don't know what to do */
 +        }
 +        PPSENDF(&ftpc->pp, "AUTH %s", ftpauth[ftpc->count1]);
 +        state(conn, FTP_AUTH);
 +      }
 +      else {
 +        result = ftp_state_user(conn);
 +        if(result)
 +          return result;
 +      }
 +
 +      break;
 +
 +    case FTP_AUTH:
 +      /* we have gotten the response to a previous AUTH command */
 +
 +      /* RFC2228 (page 5) says:
 +       *
 +       * If the server is willing to accept the named security mechanism,
 +       * and does not require any security data, it must respond with
 +       * reply code 234/334.
 +       */
 +
 +      if((ftpcode == 234) || (ftpcode == 334)) {
 +        /* Curl_ssl_connect is BLOCKING */
 +        result = Curl_ssl_connect(conn, FIRSTSOCKET);
 +        if(!result) {
 +          conn->bits.ftp_use_data_ssl = FALSE; /* clear-text data */
 +          result = ftp_state_user(conn);
 +        }
 +      }
 +      else if(ftpc->count3 < 1) {
 +        ftpc->count3++;
 +        ftpc->count1 += ftpc->count2; /* get next attempt */
 +        result = Curl_pp_sendf(&ftpc->pp, "AUTH %s", ftpauth[ftpc->count1]);
 +        /* remain in this same state */
 +      }
 +      else {
 +        if(data->set.use_ssl > CURLUSESSL_TRY)
 +          /* we failed and CURLUSESSL_CONTROL or CURLUSESSL_ALL is set */
 +          result = CURLE_USE_SSL_FAILED;
 +        else
 +          /* ignore the failure and continue */
 +          result = ftp_state_user(conn);
 +      }
 +
 +      if(result)
 +        return result;
 +      break;
 +
 +    case FTP_USER:
 +    case FTP_PASS:
 +      result = ftp_state_user_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_ACCT:
 +      result = ftp_state_acct_resp(conn, ftpcode);
 +      break;
 +
 +    case FTP_PBSZ:
 +      PPSENDF(&ftpc->pp, "PROT %c",
 +              data->set.use_ssl == CURLUSESSL_CONTROL ? 'C' : 'P');
 +      state(conn, FTP_PROT);
 +
 +      break;
 +
 +    case FTP_PROT:
 +      if(ftpcode/100 == 2)
 +        /* We have enabled SSL for the data connection! */
 +        conn->bits.ftp_use_data_ssl =
 +          (data->set.use_ssl != CURLUSESSL_CONTROL) ? TRUE : FALSE;
 +      /* FTP servers typically responds with 500 if they decide to reject
 +         our 'P' request */
 +      else if(data->set.use_ssl > CURLUSESSL_CONTROL)
 +        /* we failed and bails out */
 +        return CURLE_USE_SSL_FAILED;
 +
 +      if(data->set.ftp_ccc) {
 +        /* CCC - Clear Command Channel
 +         */
 +        PPSENDF(&ftpc->pp, "%s", "CCC");
 +        state(conn, FTP_CCC);
 +      }
 +      else {
 +        result = ftp_state_pwd(conn);
 +        if(result)
 +          return result;
 +      }
 +      break;
 +
 +    case FTP_CCC:
 +      if(ftpcode < 500) {
 +        /* First shut down the SSL layer (note: this call will block) */
 +        result = Curl_ssl_shutdown(conn, FIRSTSOCKET);
 +
 +        if(result) {
 +          failf(conn->data, "Failed to clear the command channel (CCC)");
 +          return result;
 +        }
 +      }
 +
 +      /* Then continue as normal */
 +      result = ftp_state_pwd(conn);
 +      if(result)
 +        return result;
 +      break;
 +
 +    case FTP_PWD:
 +      if(ftpcode == 257) {
-         char *ptr=&data->state.buffer[4];  /* start on the first letter */
++        char *ptr = &data->state.buffer[4];  /* start on the first letter */
 +        const size_t buf_size = data->set.buffer_size;
 +        char *dir;
 +        char *store;
++        bool entry_extracted = FALSE;
 +
 +        dir = malloc(nread + 1);
 +        if(!dir)
 +          return CURLE_OUT_OF_MEMORY;
 +
 +        /* Reply format is like
 +           257<space>[rubbish]"<directory-name>"<space><commentary> and the
 +           RFC959 says
 +
 +           The directory name can contain any character; embedded
 +           double-quotes should be escaped by double-quotes (the
 +           "quote-doubling" convention).
 +        */
 +
 +        /* scan for the first double-quote for non-standard responses */
 +        while(ptr < &data->state.buffer[buf_size]
 +              && *ptr != '\n' && *ptr != '\0' && *ptr != '"')
 +          ptr++;
 +
 +        if('\"' == *ptr) {
 +          /* it started good */
 +          ptr++;
 +          for(store = dir; *ptr;) {
 +            if('\"' == *ptr) {
 +              if('\"' == ptr[1]) {
 +                /* "quote-doubling" */
 +                *store = ptr[1];
 +                ptr++;
 +              }
 +              else {
 +                /* end of path */
-                 *store = '\0'; /* zero terminate */
++                entry_extracted = TRUE;
 +                break; /* get out of this loop */
 +              }
 +            }
 +            else
 +              *store = *ptr;
 +            store++;
 +            ptr++;
 +          }
- 
++          *store = '\0'; /* zero terminate */
++        }
++        if(entry_extracted) {
 +          /* If the path name does not look like an absolute path (i.e.: it
 +             does not start with a '/'), we probably need some server-dependent
 +             adjustments. For example, this is the case when connecting to
 +             an OS400 FTP server: this server supports two name syntaxes,
 +             the default one being incompatible with standard paths. In
 +             addition, this server switches automatically to the regular path
 +             syntax when one is encountered in a command: this results in
 +             having an entrypath in the wrong syntax when later used in CWD.
 +               The method used here is to check the server OS: we do it only
 +             if the path name looks strange to minimize overhead on other
 +             systems. */
 +
 +          if(!ftpc->server_os && dir[0] != '/') {
 +
 +            result = Curl_pp_sendf(&ftpc->pp, "%s", "SYST");
 +            if(result) {
 +              free(dir);
 +              return result;
 +            }
 +            Curl_safefree(ftpc->entrypath);
 +            ftpc->entrypath = dir; /* remember this */
 +            infof(data, "Entry path is '%s'\n", ftpc->entrypath);
 +            /* also save it where getinfo can access it: */
 +            data->state.most_recent_ftp_entrypath = ftpc->entrypath;
 +            state(conn, FTP_SYST);
 +            break;
 +          }
 +
 +          Curl_safefree(ftpc->entrypath);
 +          ftpc->entrypath = dir; /* remember this */
 +          infof(data, "Entry path is '%s'\n", ftpc->entrypath);
 +          /* also save it where getinfo can access it: */
 +          data->state.most_recent_ftp_entrypath = ftpc->entrypath;
 +        }
 +        else {
 +          /* couldn't get the path */
 +          free(dir);
 +          infof(data, "Failed to figure out path\n");
 +        }
 +      }
 +      state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
 +      DEBUGF(infof(data, "protocol connect phase DONE\n"));
 +      break;
 +
 +    case FTP_SYST:
 +      if(ftpcode == 215) {
-         char *ptr=&data->state.buffer[4];  /* start on the first letter */
++        char *ptr = &data->state.buffer[4];  /* start on the first letter */
 +        char *os;
 +        char *store;
 +
 +        os = malloc(nread + 1);
 +        if(!os)
 +          return CURLE_OUT_OF_MEMORY;
 +
 +        /* Reply format is like
 +           215<space><OS-name><space><commentary>
 +        */
 +        while(*ptr == ' ')
 +          ptr++;
 +        for(store = os; *ptr && *ptr != ' ';)
 +          *store++ = *ptr++;
 +        *store = '\0'; /* zero terminate */
 +
 +        /* Check for special servers here. */
 +
 +        if(strcasecompare(os, "OS/400")) {
 +          /* Force OS400 name format 1. */
 +          result = Curl_pp_sendf(&ftpc->pp, "%s", "SITE NAMEFMT 1");
 +          if(result) {
 +            free(os);
 +            return result;
 +          }
 +          /* remember target server OS */
 +          Curl_safefree(ftpc->server_os);
 +          ftpc->server_os = os;
 +          state(conn, FTP_NAMEFMT);
 +          break;
 +        }
 +        /* Nothing special for the target server. */
 +        /* remember target server OS */
 +        Curl_safefree(ftpc->server_os);
 +        ftpc->server_os = os;
 +      }
 +      else {
 +        /* Cannot identify server OS. Continue anyway and cross fingers. */
 +      }
 +
 +      state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
 +      DEBUGF(infof(data, "protocol connect phase DONE\n"));
 +      break;
 +
 +    case FTP_NAMEFMT:
 +      if(ftpcode == 250) {
 +        /* Name format change successful: reload initial path. */
 +        ftp_state_pwd(conn);
 +        break;
 +      }
 +
 +      state(conn, FTP_STOP); /* we are done with the CONNECT phase! */
 +      DEBUGF(infof(data, "protocol connect phase DONE\n"));
 +      break;
 +
 +    case FTP_QUOTE:
 +    case FTP_POSTQUOTE:
 +    case FTP_RETR_PREQUOTE:
 +    case FTP_STOR_PREQUOTE:
 +      if((ftpcode >= 400) && !ftpc->count2) {
 +        /* failure response code, and not allowed to fail */
 +        failf(conn->data, "QUOT command failed with %03d", ftpcode);
 +        return CURLE_QUOTE_ERROR;
 +      }
 +      result = ftp_state_quote(conn, FALSE, ftpc->state);
 +      if(result)
 +        return result;
 +
 +      break;
 +
 +    case FTP_CWD:
 +      if(ftpcode/100 != 2) {
 +        /* failure to CWD there */
 +        if(conn->data->set.ftp_create_missing_dirs &&
-            ftpc->count1 && !ftpc->count2) {
++           ftpc->cwdcount && !ftpc->count2) {
 +          /* try making it */
 +          ftpc->count2++; /* counter to prevent CWD-MKD loops */
-           PPSENDF(&ftpc->pp, "MKD %s", ftpc->dirs[ftpc->count1 - 1]);
++          PPSENDF(&ftpc->pp, "MKD %s", ftpc->dirs[ftpc->cwdcount - 1]);
 +          state(conn, FTP_MKD);
 +        }
 +        else {
 +          /* return failure */
 +          failf(data, "Server denied you to change to the given directory");
 +          ftpc->cwdfail = TRUE; /* don't remember this path as we failed
 +                                   to enter it */
 +          return CURLE_REMOTE_ACCESS_DENIED;
 +        }
 +      }
 +      else {
 +        /* success */
-         ftpc->count2=0;
-         if(++ftpc->count1 <= ftpc->dirdepth) {
++        ftpc->count2 = 0;
++        if(++ftpc->cwdcount <= ftpc->dirdepth) {
 +          /* send next CWD */
-           PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
++          PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->cwdcount - 1]);
 +        }
 +        else {
 +          result = ftp_state_mdtm(conn);
 +          if(result)
 +            return result;
 +        }
 +      }
 +      break;
 +
 +    case FTP_MKD:
 +      if((ftpcode/100 != 2) && !ftpc->count3--) {
 +        /* failure to MKD the dir */
 +        failf(data, "Failed to MKD dir: %03d", ftpcode);
 +        return CURLE_REMOTE_ACCESS_DENIED;
 +      }
 +      state(conn, FTP_CWD);
 +      /* send CWD */
-       PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
++      PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->cwdcount - 1]);
 +      break;
 +
 +    case FTP_MDTM:
 +      result = ftp_state_mdtm_resp(conn, ftpcode);
 +      break;
 +
 +    case FTP_TYPE:
 +    case FTP_LIST_TYPE:
 +    case FTP_RETR_TYPE:
 +    case FTP_STOR_TYPE:
 +      result = ftp_state_type_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_SIZE:
 +    case FTP_RETR_SIZE:
 +    case FTP_STOR_SIZE:
 +      result = ftp_state_size_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_REST:
 +    case FTP_RETR_REST:
 +      result = ftp_state_rest_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_PRET:
 +      if(ftpcode != 200) {
 +        /* there only is this one standard OK return code. */
 +        failf(data, "PRET command not accepted: %03d", ftpcode);
 +        return CURLE_FTP_PRET_FAILED;
 +      }
 +      result = ftp_state_use_pasv(conn);
 +      break;
 +
 +    case FTP_PASV:
 +      result = ftp_state_pasv_resp(conn, ftpcode);
 +      break;
 +
 +    case FTP_PORT:
 +      result = ftp_state_port_resp(conn, ftpcode);
 +      break;
 +
 +    case FTP_LIST:
 +    case FTP_RETR:
 +      result = ftp_state_get_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_STOR:
 +      result = ftp_state_stor_resp(conn, ftpcode, ftpc->state);
 +      break;
 +
 +    case FTP_QUIT:
 +      /* fallthrough, just stop! */
 +    default:
 +      /* internal error */
 +      state(conn, FTP_STOP);
 +      break;
 +    }
 +  } /* if(ftpcode) */
 +
 +  return result;
 +}
 +
 +
 +/* called repeatedly until done from multi.c */
 +static CURLcode ftp_multi_statemach(struct connectdata *conn,
 +                                    bool *done)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  CURLcode result = Curl_pp_statemach(&ftpc->pp, FALSE);
 +
 +  /* Check for the state outside of the Curl_socket_check() return code checks
 +     since at times we are in fact already in this state when this function
 +     gets called. */
 +  *done = (ftpc->state == FTP_STOP) ? TRUE : FALSE;
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_block_statemach(struct connectdata *conn)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +  CURLcode result = CURLE_OK;
 +
 +  while(ftpc->state != FTP_STOP) {
 +    result = Curl_pp_statemach(pp, TRUE);
 +    if(result)
 +      break;
 +  }
 +
 +  return result;
 +}
 +
 +/*
 + * ftp_connect() should do everything that is to be considered a part of
 + * the connection phase.
 + *
 + * The variable 'done' points to will be TRUE if the protocol-layer connect
 + * phase is done when this function returns, or FALSE if not.
 + *
 + */
 +static CURLcode ftp_connect(struct connectdata *conn,
 +                                 bool *done) /* see description above */
 +{
 +  CURLcode result;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +
 +  *done = FALSE; /* default to not done yet */
 +
 +  /* We always support persistent connections on ftp */
 +  connkeep(conn, "FTP default");
 +
 +  pp->response_time = RESP_TIMEOUT; /* set default response time-out */
 +  pp->statemach_act = ftp_statemach_act;
 +  pp->endofresp = ftp_endofresp;
 +  pp->conn = conn;
 +
 +  if(conn->handler->flags & PROTOPT_SSL) {
 +    /* BLOCKING */
 +    result = Curl_ssl_connect(conn, FIRSTSOCKET);
 +    if(result)
 +      return result;
 +  }
 +
 +  Curl_pp_init(pp); /* init the generic pingpong data */
 +
 +  /* When we connect, we start in the state where we await the 220
 +     response */
 +  state(conn, FTP_WAIT220);
 +
 +  result = ftp_multi_statemach(conn, done);
 +
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_done()
 + *
 + * The DONE function. This does what needs to be done after a single DO has
 + * performed.
 + *
 + * Input argument is already checked for validity.
 + */
 +static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
 +                         bool premature)
 +{
 +  struct Curl_easy *data = conn->data;
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +  ssize_t nread;
 +  int ftpcode;
 +  CURLcode result = CURLE_OK;
 +  char *path = NULL;
 +  const char *path_to_use = data->state.path;
 +
 +  if(!ftp)
 +    return CURLE_OK;
 +
 +  switch(status) {
 +  case CURLE_BAD_DOWNLOAD_RESUME:
 +  case CURLE_FTP_WEIRD_PASV_REPLY:
 +  case CURLE_FTP_PORT_FAILED:
 +  case CURLE_FTP_ACCEPT_FAILED:
 +  case CURLE_FTP_ACCEPT_TIMEOUT:
 +  case CURLE_FTP_COULDNT_SET_TYPE:
 +  case CURLE_FTP_COULDNT_RETR_FILE:
 +  case CURLE_PARTIAL_FILE:
 +  case CURLE_UPLOAD_FAILED:
 +  case CURLE_REMOTE_ACCESS_DENIED:
 +  case CURLE_FILESIZE_EXCEEDED:
 +  case CURLE_REMOTE_FILE_NOT_FOUND:
 +  case CURLE_WRITE_ERROR:
 +    /* the connection stays alive fine even though this happened */
 +    /* fall-through */
 +  case CURLE_OK: /* doesn't affect the control connection's status */
 +    if(!premature)
 +      break;
 +
 +    /* until we cope better with prematurely ended requests, let them
 +     * fallback as if in complete failure */
 +    /* FALLTHROUGH */
 +  default:       /* by default, an error means the control connection is
 +                    wedged and should not be used anymore */
 +    ftpc->ctl_valid = FALSE;
 +    ftpc->cwdfail = TRUE; /* set this TRUE to prevent us to remember the
 +                             current path, as this connection is going */
 +    connclose(conn, "FTP ended with bad error code");
 +    result = status;      /* use the already set error code */
 +    break;
 +  }
 +
 +  /* now store a copy of the directory we are in */
 +  free(ftpc->prevpath);
 +
 +  if(data->set.wildcardmatch) {
 +    if(data->set.chunk_end && ftpc->file) {
 +      data->set.chunk_end(data->wildcard.customptr);
 +    }
 +    ftpc->known_filesize = -1;
 +  }
 +
 +  if(!result)
 +    /* get the "raw" path */
 +    result = Curl_urldecode(data, path_to_use, 0, &path, NULL, FALSE);
 +  if(result) {
 +    /* We can limp along anyway (and should try to since we may already be in
 +     * the error path) */
 +    ftpc->ctl_valid = FALSE; /* mark control connection as bad */
 +    connclose(conn, "FTP: out of memory!"); /* mark for connection closure */
 +    ftpc->prevpath = NULL; /* no path remembering */
 +  }
 +  else {
 +    size_t flen = ftpc->file?strlen(ftpc->file):0; /* file is "raw" already */
 +    size_t dlen = strlen(path)-flen;
 +    if(!ftpc->cwdfail) {
++      ftpc->prevmethod = data->set.ftp_filemethod;
 +      if(dlen && (data->set.ftp_filemethod != FTPFILE_NOCWD)) {
 +        ftpc->prevpath = path;
 +        if(flen)
 +          /* if 'path' is not the whole string */
-           ftpc->prevpath[dlen]=0; /* terminate */
++          ftpc->prevpath[dlen] = 0; /* terminate */
 +      }
 +      else {
 +        /* we never changed dir */
-         ftpc->prevpath=strdup("");
++        ftpc->prevpath = strdup("");
 +        free(path);
 +      }
 +      if(ftpc->prevpath)
 +        infof(data, "Remembering we are in dir \"%s\"\n", ftpc->prevpath);
 +    }
 +    else {
 +      ftpc->prevpath = NULL; /* no path */
 +      free(path);
 +    }
 +  }
 +  /* free the dir tree and file parts */
 +  freedirs(ftpc);
 +
 +  /* shut down the socket to inform the server we're done */
 +
 +#ifdef _WIN32_WCE
 +  shutdown(conn->sock[SECONDARYSOCKET], 2);  /* SD_BOTH */
 +#endif
 +
 +  if(conn->sock[SECONDARYSOCKET] != CURL_SOCKET_BAD) {
 +    if(!result && ftpc->dont_check && data->req.maxdownload > 0) {
 +      /* partial download completed */
 +      result = Curl_pp_sendf(pp, "%s", "ABOR");
 +      if(result) {
 +        failf(data, "Failure sending ABOR command: %s",
 +              curl_easy_strerror(result));
 +        ftpc->ctl_valid = FALSE; /* mark control connection as bad */
 +        connclose(conn, "ABOR command failed"); /* connection closure */
 +      }
 +    }
 +
 +    if(conn->ssl[SECONDARYSOCKET].use) {
 +      /* The secondary socket is using SSL so we must close down that part
 +         first before we close the socket for real */
 +      Curl_ssl_close(conn, SECONDARYSOCKET);
 +
 +      /* Note that we keep "use" set to TRUE since that (next) connection is
 +         still requested to use SSL */
 +    }
 +    close_secondarysocket(conn);
 +  }
 +
 +  if(!result && (ftp->transfer == FTPTRANSFER_BODY) && ftpc->ctl_valid &&
 +     pp->pending_resp && !premature) {
 +    /*
 +     * Let's see what the server says about the transfer we just performed,
 +     * but lower the timeout as sometimes this connection has died while the
 +     * data has been transferred. This happens when doing through NATs etc that
 +     * abandon old silent connections.
 +     */
 +    long old_time = pp->response_time;
 +
 +    pp->response_time = 60*1000; /* give it only a minute for now */
 +    pp->response = Curl_tvnow(); /* timeout relative now */
 +
 +    result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
 +
 +    pp->response_time = old_time; /* set this back to previous value */
 +
 +    if(!nread && (CURLE_OPERATION_TIMEDOUT == result)) {
 +      failf(data, "control connection looks dead");
 +      ftpc->ctl_valid = FALSE; /* mark control connection as bad */
 +      connclose(conn, "Timeout or similar in FTP DONE operation"); /* close */
 +    }
 +
 +    if(result)
 +      return result;
 +
 +    if(ftpc->dont_check && data->req.maxdownload > 0) {
 +      /* we have just sent ABOR and there is no reliable way to check if it was
 +       * successful or not; we have to close the connection now */
 +      infof(data, "partial download completed, closing connection\n");
 +      connclose(conn, "Partial download with no ability to check");
 +      return result;
 +    }
 +
 +    if(!ftpc->dont_check) {
 +      /* 226 Transfer complete, 250 Requested file action okay, completed. */
 +      if((ftpcode != 226) && (ftpcode != 250)) {
 +        failf(data, "server did not report OK, got %d", ftpcode);
 +        result = CURLE_PARTIAL_FILE;
 +      }
 +    }
 +  }
 +
 +  if(result || premature)
 +    /* the response code from the transfer showed an error already so no
 +       use checking further */
 +    ;
 +  else if(data->set.upload) {
 +    if((-1 != data->state.infilesize) &&
 +       (data->state.infilesize != *ftp->bytecountp) &&
 +       !data->set.crlf &&
 +       (ftp->transfer == FTPTRANSFER_BODY)) {
 +      failf(data, "Uploaded unaligned file size (%" CURL_FORMAT_CURL_OFF_T
 +            " out of %" CURL_FORMAT_CURL_OFF_T " bytes)",
 +            *ftp->bytecountp, data->state.infilesize);
 +      result = CURLE_PARTIAL_FILE;
 +    }
 +  }
 +  else {
 +    if((-1 != data->req.size) &&
 +       (data->req.size != *ftp->bytecountp) &&
 +#ifdef CURL_DO_LINEEND_CONV
 +       /* Most FTP servers don't adjust their file SIZE response for CRLFs, so
 +        * we'll check to see if the discrepancy can be explained by the number
 +        * of CRLFs we've changed to LFs.
 +        */
 +       ((data->req.size + data->state.crlf_conversions) !=
 +        *ftp->bytecountp) &&
 +#endif /* CURL_DO_LINEEND_CONV */
 +       (data->req.maxdownload != *ftp->bytecountp)) {
 +      failf(data, "Received only partial file: %" CURL_FORMAT_CURL_OFF_T
 +            " bytes", *ftp->bytecountp);
 +      result = CURLE_PARTIAL_FILE;
 +    }
 +    else if(!ftpc->dont_check &&
 +            !*ftp->bytecountp &&
 +            (data->req.size>0)) {
 +      failf(data, "No data was received!");
 +      result = CURLE_FTP_COULDNT_RETR_FILE;
 +    }
 +  }
 +
 +  /* clear these for next connection */
 +  ftp->transfer = FTPTRANSFER_BODY;
 +  ftpc->dont_check = FALSE;
 +
 +  /* Send any post-transfer QUOTE strings? */
 +  if(!status && !result && !premature && data->set.postquote)
 +    result = ftp_sendquote(conn, data->set.postquote);
 +
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_sendquote()
 + *
 + * Where a 'quote' means a list of custom commands to send to the server.
 + * The quote list is passed as an argument.
 + *
 + * BLOCKING
 + */
 +
 +static
 +CURLcode ftp_sendquote(struct connectdata *conn, struct curl_slist *quote)
 +{
 +  struct curl_slist *item;
 +  ssize_t nread;
 +  int ftpcode;
 +  CURLcode result;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +
 +  item = quote;
 +  while(item) {
 +    if(item->data) {
 +      char *cmd = item->data;
 +      bool acceptfail = FALSE;
 +
 +      /* if a command starts with an asterisk, which a legal FTP command never
 +         can, the command will be allowed to fail without it causing any
 +         aborts or cancels etc. It will cause libcurl to act as if the command
 +         is successful, whatever the server reponds. */
 +
 +      if(cmd[0] == '*') {
 +        cmd++;
 +        acceptfail = TRUE;
 +      }
 +
 +      PPSENDF(&conn->proto.ftpc.pp, "%s", cmd);
 +
 +      pp->response = Curl_tvnow(); /* timeout relative now */
 +
 +      result = Curl_GetFTPResponse(&nread, conn, &ftpcode);
 +      if(result)
 +        return result;
 +
 +      if(!acceptfail && (ftpcode >= 400)) {
 +        failf(conn->data, "QUOT string not accepted: %s", cmd);
 +        return CURLE_QUOTE_ERROR;
 +      }
 +    }
 +
 +    item = item->next;
 +  }
 +
 +  return CURLE_OK;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_need_type()
 + *
 + * Returns TRUE if we in the current situation should send TYPE
 + */
 +static int ftp_need_type(struct connectdata *conn,
 +                         bool ascii_wanted)
 +{
 +  return conn->proto.ftpc.transfertype != (ascii_wanted?'A':'I');
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_nb_type()
 + *
 + * Set TYPE. We only deal with ASCII or BINARY so this function
 + * sets one of them.
 + * If the transfer type is not sent, simulate on OK response in newstate
 + */
 +static CURLcode ftp_nb_type(struct connectdata *conn,
 +                            bool ascii, ftpstate newstate)
 +{
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  CURLcode result;
 +  char want = (char)(ascii?'A':'I');
 +
 +  if(ftpc->transfertype == want) {
 +    state(conn, newstate);
 +    return ftp_state_type_resp(conn, 200, newstate);
 +  }
 +
 +  PPSENDF(&ftpc->pp, "TYPE %c", want);
 +  state(conn, newstate);
 +
 +  /* keep track of our current transfer type */
 +  ftpc->transfertype = want;
 +  return CURLE_OK;
 +}
 +
 +/***************************************************************************
 + *
 + * ftp_pasv_verbose()
 + *
 + * This function only outputs some informationals about this second connection
 + * when we've issued a PASV command before and thus we have connected to a
 + * possibly new IP address.
 + *
 + */
 +#ifndef CURL_DISABLE_VERBOSE_STRINGS
 +static void
 +ftp_pasv_verbose(struct connectdata *conn,
 +                 Curl_addrinfo *ai,
 +                 char *newhost, /* ascii version */
 +                 int port)
 +{
 +  char buf[256];
 +  Curl_printable_address(ai, buf, sizeof(buf));
 +  infof(conn->data, "Connecting to %s (%s) port %d\n", newhost, buf, port);
 +}
 +#endif
 +
 +/*
 +  Check if this is a range download, and if so, set the internal variables
 +  properly.
 + */
 +
 +static CURLcode ftp_range(struct connectdata *conn)
 +{
 +  curl_off_t from, to;
 +  char *ptr;
-   char *ptr2;
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if(data->state.use_range && data->state.range) {
-     from=curlx_strtoofft(data->state.range, &ptr, 0);
-     while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
++    CURLofft from_t;
++    CURLofft to_t;
++    from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
++    if(from_t == CURL_OFFT_FLOW)
++      return CURLE_RANGE_ERROR;
++    while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
 +      ptr++;
-     to=curlx_strtoofft(ptr, &ptr2, 0);
-     if(ptr == ptr2) {
-       /* we didn't get any digit */
-       to=-1;
-     }
-     if((-1 == to) && (from>=0)) {
++    to_t = curlx_strtoofft(ptr, NULL, 0, &to);
++    if(to_t == CURL_OFFT_FLOW)
++      return CURLE_RANGE_ERROR;
++    if((to_t == CURL_OFFT_INVAL) && !from_t) {
 +      /* X - */
 +      data->state.resume_from = from;
 +      DEBUGF(infof(conn->data, "FTP RANGE %" CURL_FORMAT_CURL_OFF_T
 +                   " to end of file\n", from));
 +    }
-     else if(from < 0) {
++    else if(!to_t && (from_t == CURL_OFFT_INVAL)) {
 +      /* -Y */
-       data->req.maxdownload = -from;
-       data->state.resume_from = from;
++      data->req.maxdownload = to;
++      data->state.resume_from = -to;
 +      DEBUGF(infof(conn->data, "FTP RANGE the last %" CURL_FORMAT_CURL_OFF_T
-                    " bytes\n", -from));
++                   " bytes\n", to));
 +    }
 +    else {
 +      /* X-Y */
-       data->req.maxdownload = (to-from)+1; /* include last byte */
++      data->req.maxdownload = (to - from) + 1; /* include last byte */
 +      data->state.resume_from = from;
 +      DEBUGF(infof(conn->data, "FTP RANGE from %" CURL_FORMAT_CURL_OFF_T
 +                   " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
 +                   from, data->req.maxdownload));
 +    }
 +    DEBUGF(infof(conn->data, "range-download from %" CURL_FORMAT_CURL_OFF_T
 +                 " to %" CURL_FORMAT_CURL_OFF_T ", totally %"
 +                 CURL_FORMAT_CURL_OFF_T " bytes\n",
 +                 from, to, data->req.maxdownload));
 +    ftpc->dont_check = TRUE; /* don't check for successful transfer */
 +  }
 +  else
 +    data->req.maxdownload = -1;
 +  return CURLE_OK;
 +}
 +
 +
 +/*
 + * ftp_do_more()
 + *
 + * This function shall be called when the second FTP (data) connection is
 + * connected.
 + *
 + * 'complete' can return 0 for incomplete, 1 for done and -1 for go back
 + * (which basically is only for when PASV is being sent to retry a failed
 + * EPSV).
 + */
 +
 +static CURLcode ftp_do_more(struct connectdata *conn, int *completep)
 +{
-   struct Curl_easy *data=conn->data;
++  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  CURLcode result = CURLE_OK;
 +  bool connected = FALSE;
 +  bool complete = FALSE;
 +
 +  /* the ftp struct is inited in ftp_connect() */
 +  struct FTP *ftp = data->req.protop;
 +
 +  /* if the second connection isn't done yet, wait for it */
 +  if(!conn->bits.tcpconnect[SECONDARYSOCKET]) {
-     if(conn->tunnel_state[SECONDARYSOCKET] == TUNNEL_CONNECT) {
++    if(Curl_connect_ongoing(conn)) {
 +      /* As we're in TUNNEL_CONNECT state now, we know the proxy name and port
 +         aren't used so we blank their arguments. TODO: make this nicer */
 +      result = Curl_proxyCONNECT(conn, SECONDARYSOCKET, NULL, 0);
 +
 +      return result;
 +    }
 +
 +    result = Curl_is_connected(conn, SECONDARYSOCKET, &connected);
 +
 +    /* Ready to do more? */
 +    if(connected) {
 +      DEBUGF(infof(data, "DO-MORE connected phase starts\n"));
 +    }
 +    else {
 +      if(result && (ftpc->count1 == 0)) {
 +        *completep = -1; /* go back to DOING please */
 +        /* this is a EPSV connect failing, try PASV instead */
 +        return ftp_epsv_disable(conn);
 +      }
 +      return result;
 +    }
 +  }
 +
 +  result = Curl_proxy_connect(conn, SECONDARYSOCKET);
 +  if(result)
 +    return result;
 +
 +  if(CONNECT_SECONDARYSOCKET_PROXY_SSL())
 +    return result;
 +
 +  if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
-      conn->tunnel_state[SECONDARYSOCKET] != TUNNEL_COMPLETE)
++     Curl_connect_ongoing(conn))
 +    return result;
 +
 +
 +  if(ftpc->state) {
 +    /* already in a state so skip the initial commands.
 +       They are only done to kickstart the do_more state */
 +    result = ftp_multi_statemach(conn, &complete);
 +
 +    *completep = (int)complete;
 +
 +    /* if we got an error or if we don't wait for a data connection return
 +       immediately */
 +    if(result || (ftpc->wait_data_conn != TRUE))
 +      return result;
 +
 +    if(ftpc->wait_data_conn)
 +      /* if we reach the end of the FTP state machine here, *complete will be
 +         TRUE but so is ftpc->wait_data_conn, which says we need to wait for
 +         the data connection and therefore we're not actually complete */
 +      *completep = 0;
 +  }
 +
 +  if(ftp->transfer <= FTPTRANSFER_INFO) {
 +    /* a transfer is about to take place, or if not a file name was given
 +       so we'll do a SIZE on it later and then we need the right TYPE first */
 +
 +    if(ftpc->wait_data_conn == TRUE) {
 +      bool serv_conned;
 +
 +      result = ReceivedServerConnect(conn, &serv_conned);
 +      if(result)
 +        return result; /* Failed to accept data connection */
 +
 +      if(serv_conned) {
 +        /* It looks data connection is established */
 +        result = AcceptServerConnect(conn);
 +        ftpc->wait_data_conn = FALSE;
 +        if(!result)
 +          result = InitiateTransfer(conn);
 +
 +        if(result)
 +          return result;
 +
 +        *completep = 1; /* this state is now complete when the server has
 +                           connected back to us */
 +      }
 +    }
 +    else if(data->set.upload) {
 +      result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_STOR_TYPE);
 +      if(result)
 +        return result;
 +
 +      result = ftp_multi_statemach(conn, &complete);
 +      if(ftpc->wait_data_conn)
 +        /* if we reach the end of the FTP state machine here, *complete will be
 +           TRUE but so is ftpc->wait_data_conn, which says we need to wait for
 +           the data connection and therefore we're not actually complete */
 +        *completep = 0;
 +      else
 +        *completep = (int)complete;
 +    }
 +    else {
 +      /* download */
 +      ftp->downloadsize = -1; /* unknown as of yet */
 +
 +      result = ftp_range(conn);
 +      if(result)
 +        ;
 +      else if(data->set.ftp_list_only || !ftpc->file) {
 +        /* The specified path ends with a slash, and therefore we think this
 +           is a directory that is requested, use LIST. But before that we
 +           need to set ASCII transfer mode. */
 +
 +        /* But only if a body transfer was requested. */
 +        if(ftp->transfer == FTPTRANSFER_BODY) {
 +          result = ftp_nb_type(conn, TRUE, FTP_LIST_TYPE);
 +          if(result)
 +            return result;
 +        }
 +        /* otherwise just fall through */
 +      }
 +      else {
 +        result = ftp_nb_type(conn, data->set.prefer_ascii, FTP_RETR_TYPE);
 +        if(result)
 +          return result;
 +      }
 +
 +      result = ftp_multi_statemach(conn, &complete);
 +      *completep = (int)complete;
 +    }
 +    return result;
 +  }
 +
 +  if(!result && (ftp->transfer != FTPTRANSFER_BODY))
 +    /* no data to transfer. FIX: it feels like a kludge to have this here
 +       too! */
 +    Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
 +
 +  if(!ftpc->wait_data_conn) {
 +    /* no waiting for the data connection so this is now complete */
 +    *completep = 1;
 +    DEBUGF(infof(data, "DO-MORE phase ends with %d\n", (int)result));
 +  }
 +
 +  return result;
 +}
 +
 +
 +
 +/***********************************************************************
 + *
 + * ftp_perform()
 + *
 + * This is the actual DO function for FTP. Get a file/directory according to
 + * the options previously setup.
 + */
 +
 +static
 +CURLcode ftp_perform(struct connectdata *conn,
 +                     bool *connected,  /* connect status after PASV / PORT */
 +                     bool *dophase_done)
 +{
 +  /* this is FTP and no proxy */
-   CURLcode result=CURLE_OK;
++  CURLcode result = CURLE_OK;
 +
 +  DEBUGF(infof(conn->data, "DO phase starts\n"));
 +
 +  if(conn->data->set.opt_no_body) {
 +    /* requested no body means no transfer... */
 +    struct FTP *ftp = conn->data->req.protop;
 +    ftp->transfer = FTPTRANSFER_INFO;
 +  }
 +
 +  *dophase_done = FALSE; /* not done yet */
 +
 +  /* start the first command in the DO phase */
 +  result = ftp_state_quote(conn, TRUE, FTP_QUOTE);
 +  if(result)
 +    return result;
 +
 +  /* run the state-machine */
 +  result = ftp_multi_statemach(conn, dophase_done);
 +
 +  *connected = conn->bits.tcpconnect[SECONDARYSOCKET];
 +
 +  infof(conn->data, "ftp_perform ends with SECONDARY: %d\n", *connected);
 +
 +  if(*dophase_done) {
 +    DEBUGF(infof(conn->data, "DO phase is complete1\n"));
 +  }
 +
 +  return result;
 +}
 +
 +static void wc_data_dtor(void *ptr)
 +{
 +  struct ftp_wc_tmpdata *tmp = ptr;
 +  if(tmp)
 +    Curl_ftp_parselist_data_free(&tmp->parser);
 +  free(tmp);
 +}
 +
 +static CURLcode init_wc_data(struct connectdata *conn)
 +{
 +  char *last_slash;
 +  char *path = conn->data->state.path;
 +  struct WildcardData *wildcard = &(conn->data->wildcard);
 +  CURLcode result = CURLE_OK;
 +  struct ftp_wc_tmpdata *ftp_tmp;
 +
 +  last_slash = strrchr(conn->data->state.path, '/');
 +  if(last_slash) {
 +    last_slash++;
 +    if(last_slash[0] == '\0') {
 +      wildcard->state = CURLWC_CLEAN;
 +      result = ftp_parse_url_path(conn);
 +      return result;
 +    }
 +    wildcard->pattern = strdup(last_slash);
 +    if(!wildcard->pattern)
 +      return CURLE_OUT_OF_MEMORY;
 +    last_slash[0] = '\0'; /* cut file from path */
 +  }
 +  else { /* there is only 'wildcard pattern' or nothing */
 +    if(path[0]) {
 +      wildcard->pattern = strdup(path);
 +      if(!wildcard->pattern)
 +        return CURLE_OUT_OF_MEMORY;
 +      path[0] = '\0';
 +    }
 +    else { /* only list */
 +      wildcard->state = CURLWC_CLEAN;
 +      result = ftp_parse_url_path(conn);
 +      return result;
 +    }
 +  }
 +
 +  /* program continues only if URL is not ending with slash, allocate needed
 +     resources for wildcard transfer */
 +
 +  /* allocate ftp protocol specific temporary wildcard data */
 +  ftp_tmp = calloc(1, sizeof(struct ftp_wc_tmpdata));
 +  if(!ftp_tmp) {
 +    Curl_safefree(wildcard->pattern);
 +    return CURLE_OUT_OF_MEMORY;
 +  }
 +
 +  /* INITIALIZE parselist structure */
 +  ftp_tmp->parser = Curl_ftp_parselist_data_alloc();
 +  if(!ftp_tmp->parser) {
 +    Curl_safefree(wildcard->pattern);
 +    free(ftp_tmp);
 +    return CURLE_OUT_OF_MEMORY;
 +  }
 +
 +  wildcard->tmp = ftp_tmp; /* put it to the WildcardData tmp pointer */
 +  wildcard->tmp_dtor = wc_data_dtor;
 +
 +  /* wildcard does not support NOCWD option (assert it?) */
 +  if(conn->data->set.ftp_filemethod == FTPFILE_NOCWD)
 +    conn->data->set.ftp_filemethod = FTPFILE_MULTICWD;
 +
 +  /* try to parse ftp url */
 +  result = ftp_parse_url_path(conn);
 +  if(result) {
 +    Curl_safefree(wildcard->pattern);
 +    wildcard->tmp_dtor(wildcard->tmp);
 +    wildcard->tmp_dtor = ZERO_NULL;
 +    wildcard->tmp = NULL;
 +    return result;
 +  }
 +
 +  wildcard->path = strdup(conn->data->state.path);
 +  if(!wildcard->path) {
 +    Curl_safefree(wildcard->pattern);
 +    wildcard->tmp_dtor(wildcard->tmp);
 +    wildcard->tmp_dtor = ZERO_NULL;
 +    wildcard->tmp = NULL;
 +    return CURLE_OUT_OF_MEMORY;
 +  }
 +
 +  /* backup old write_function */
 +  ftp_tmp->backup.write_function = conn->data->set.fwrite_func;
 +  /* parsing write function */
 +  conn->data->set.fwrite_func = Curl_ftp_parselist;
 +  /* backup old file descriptor */
 +  ftp_tmp->backup.file_descriptor = conn->data->set.out;
 +  /* let the writefunc callback know what curl pointer is working with */
 +  conn->data->set.out = conn;
 +
 +  infof(conn->data, "Wildcard - Parsing started\n");
 +  return CURLE_OK;
 +}
 +
 +/* This is called recursively */
 +static CURLcode wc_statemach(struct connectdata *conn)
 +{
 +  struct WildcardData * const wildcard = &(conn->data->wildcard);
 +  CURLcode result = CURLE_OK;
 +
 +  switch(wildcard->state) {
 +  case CURLWC_INIT:
 +    result = init_wc_data(conn);
 +    if(wildcard->state == CURLWC_CLEAN)
 +      /* only listing! */
 +      break;
 +    wildcard->state = result ? CURLWC_ERROR : CURLWC_MATCHING;
 +    break;
 +
 +  case CURLWC_MATCHING: {
 +    /* In this state is LIST response successfully parsed, so lets restore
 +       previous WRITEFUNCTION callback and WRITEDATA pointer */
 +    struct ftp_wc_tmpdata *ftp_tmp = wildcard->tmp;
 +    conn->data->set.fwrite_func = ftp_tmp->backup.write_function;
 +    conn->data->set.out = ftp_tmp->backup.file_descriptor;
 +    ftp_tmp->backup.write_function = ZERO_NULL;
 +    ftp_tmp->backup.file_descriptor = NULL;
 +    wildcard->state = CURLWC_DOWNLOADING;
 +
 +    if(Curl_ftp_parselist_geterror(ftp_tmp->parser)) {
 +      /* error found in LIST parsing */
 +      wildcard->state = CURLWC_CLEAN;
 +      return wc_statemach(conn);
 +    }
 +    if(wildcard->filelist.size == 0) {
 +      /* no corresponding file */
 +      wildcard->state = CURLWC_CLEAN;
 +      return CURLE_REMOTE_FILE_NOT_FOUND;
 +    }
 +    return wc_statemach(conn);
 +  }
 +
 +  case CURLWC_DOWNLOADING: {
 +    /* filelist has at least one file, lets get first one */
 +    struct ftp_conn *ftpc = &conn->proto.ftpc;
 +    struct curl_fileinfo *finfo = wildcard->filelist.head->ptr;
 +
 +    char *tmp_path = aprintf("%s%s", wildcard->path, finfo->filename);
 +    if(!tmp_path)
 +      return CURLE_OUT_OF_MEMORY;
 +
 +    /* switch default "state.pathbuffer" and tmp_path, good to see
 +       ftp_parse_url_path function to understand this trick */
 +    Curl_safefree(conn->data->state.pathbuffer);
 +    conn->data->state.pathbuffer = tmp_path;
 +    conn->data->state.path = tmp_path;
 +
 +    infof(conn->data, "Wildcard - START of \"%s\"\n", finfo->filename);
 +    if(conn->data->set.chunk_bgn) {
 +      long userresponse = conn->data->set.chunk_bgn(
 +        finfo, wildcard->customptr, (int)wildcard->filelist.size);
 +      switch(userresponse) {
 +      case CURL_CHUNK_BGN_FUNC_SKIP:
 +        infof(conn->data, "Wildcard - \"%s\" skipped by user\n",
 +              finfo->filename);
 +        wildcard->state = CURLWC_SKIP;
 +        return wc_statemach(conn);
 +      case CURL_CHUNK_BGN_FUNC_FAIL:
 +        return CURLE_CHUNK_FAILED;
 +      }
 +    }
 +
 +    if(finfo->filetype != CURLFILETYPE_FILE) {
 +      wildcard->state = CURLWC_SKIP;
 +      return wc_statemach(conn);
 +    }
 +
 +    if(finfo->flags & CURLFINFOFLAG_KNOWN_SIZE)
 +      ftpc->known_filesize = finfo->size;
 +
 +    result = ftp_parse_url_path(conn);
 +    if(result)
 +      return result;
 +
 +    /* we don't need the Curl_fileinfo of first file anymore */
 +    Curl_llist_remove(&wildcard->filelist, wildcard->filelist.head, NULL);
 +
 +    if(wildcard->filelist.size == 0) { /* remains only one file to down. */
 +      wildcard->state = CURLWC_CLEAN;
 +      /* after that will be ftp_do called once again and no transfer
 +         will be done because of CURLWC_CLEAN state */
 +      return CURLE_OK;
 +    }
 +  } break;
 +
 +  case CURLWC_SKIP: {
 +    if(conn->data->set.chunk_end)
 +      conn->data->set.chunk_end(conn->data->wildcard.customptr);
 +    Curl_llist_remove(&wildcard->filelist, wildcard->filelist.head, NULL);
 +    wildcard->state = (wildcard->filelist.size == 0) ?
 +                      CURLWC_CLEAN : CURLWC_DOWNLOADING;
 +    return wc_statemach(conn);
 +  }
 +
 +  case CURLWC_CLEAN: {
 +    struct ftp_wc_tmpdata *ftp_tmp = wildcard->tmp;
 +    result = CURLE_OK;
 +    if(ftp_tmp)
 +      result = Curl_ftp_parselist_geterror(ftp_tmp->parser);
 +
 +    wildcard->state = result ? CURLWC_ERROR : CURLWC_DONE;
 +  } break;
 +
 +  case CURLWC_DONE:
 +  case CURLWC_ERROR:
 +  case CURLWC_CLEAR:
 +    break;
 +  }
 +
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_do()
 + *
 + * This function is registered as 'curl_do' function. It decodes the path
 + * parts etc as a wrapper to the actual DO function (ftp_perform).
 + *
 + * The input argument is already checked for validity.
 + */
 +static CURLcode ftp_do(struct connectdata *conn, bool *done)
 +{
 +  CURLcode result = CURLE_OK;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  *done = FALSE; /* default to false */
 +  ftpc->wait_data_conn = FALSE; /* default to no such wait */
 +
 +  if(conn->data->set.wildcardmatch) {
 +    result = wc_statemach(conn);
 +    if(conn->data->wildcard.state == CURLWC_SKIP ||
 +      conn->data->wildcard.state == CURLWC_DONE) {
 +      /* do not call ftp_regular_transfer */
 +      return CURLE_OK;
 +    }
 +    if(result) /* error, loop or skipping the file */
 +      return result;
 +  }
 +  else { /* no wildcard FSM needed */
 +    result = ftp_parse_url_path(conn);
 +    if(result)
 +      return result;
 +  }
 +
 +  result = ftp_regular_transfer(conn, done);
 +
 +  return result;
 +}
 +
 +
 +CURLcode Curl_ftpsend(struct connectdata *conn, const char *cmd)
 +{
 +  ssize_t bytes_written;
 +#define SBUF_SIZE 1024
 +  char s[SBUF_SIZE];
 +  size_t write_len;
-   char *sptr=s;
++  char *sptr = s;
 +  CURLcode result = CURLE_OK;
 +#ifdef HAVE_GSSAPI
 +  enum protection_level data_sec = conn->data_prot;
 +#endif
 +
 +  write_len = strlen(cmd);
 +  if(write_len > (sizeof(s) -3))
 +    return CURLE_BAD_FUNCTION_ARGUMENT;
 +
 +  strcpy(&s[write_len], "\r\n"); /* append a trailing CRLF */
-   write_len +=2;
- 
-   bytes_written=0;
++  write_len += 2;
++  bytes_written = 0;
 +
 +  result = Curl_convert_to_network(conn->data, s, write_len);
 +  /* Curl_convert_to_network calls failf if unsuccessful */
 +  if(result)
 +    return result;
 +
 +  for(;;) {
 +#ifdef HAVE_GSSAPI
 +    conn->data_prot = PROT_CMD;
 +#endif
 +    result = Curl_write(conn, conn->sock[FIRSTSOCKET], sptr, write_len,
 +                        &bytes_written);
 +#ifdef HAVE_GSSAPI
 +    DEBUGASSERT(data_sec > PROT_NONE && data_sec < PROT_LAST);
 +    conn->data_prot = data_sec;
 +#endif
 +
 +    if(result)
 +      break;
 +
 +    if(conn->data->set.verbose)
 +      Curl_debug(conn->data, CURLINFO_HEADER_OUT,
 +                 sptr, (size_t)bytes_written, conn);
 +
 +    if(bytes_written != (ssize_t)write_len) {
 +      write_len -= bytes_written;
 +      sptr += bytes_written;
 +    }
 +    else
 +      break;
 +  }
 +
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_quit()
 + *
 + * This should be called before calling sclose() on an ftp control connection
 + * (not data connections). We should then wait for the response from the
 + * server before returning. The calling code should then try to close the
 + * connection.
 + *
 + */
 +static CURLcode ftp_quit(struct connectdata *conn)
 +{
 +  CURLcode result = CURLE_OK;
 +
 +  if(conn->proto.ftpc.ctl_valid) {
 +    result = Curl_pp_sendf(&conn->proto.ftpc.pp, "%s", "QUIT");
 +    if(result) {
 +      failf(conn->data, "Failure sending QUIT command: %s",
 +            curl_easy_strerror(result));
 +      conn->proto.ftpc.ctl_valid = FALSE; /* mark control connection as bad */
 +      connclose(conn, "QUIT command failed"); /* mark for connection closure */
 +      state(conn, FTP_STOP);
 +      return result;
 +    }
 +
 +    state(conn, FTP_QUIT);
 +
 +    result = ftp_block_statemach(conn);
 +  }
 +
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_disconnect()
 + *
 + * Disconnect from an FTP server. Cleanup protocol-specific per-connection
 + * resources. BLOCKING.
 + */
 +static CURLcode ftp_disconnect(struct connectdata *conn, bool dead_connection)
 +{
-   struct ftp_conn *ftpc= &conn->proto.ftpc;
++  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  struct pingpong *pp = &ftpc->pp;
 +
 +  /* We cannot send quit unconditionally. If this connection is stale or
 +     bad in any way, sending quit and waiting around here will make the
 +     disconnect wait in vain and cause more problems than we need to.
 +
 +     ftp_quit() will check the state of ftp->ctl_valid. If it's ok it
 +     will try to send the QUIT command, otherwise it will just return.
 +  */
 +  if(dead_connection)
 +    ftpc->ctl_valid = FALSE;
 +
 +  /* The FTP session may or may not have been allocated/setup at this point! */
 +  (void)ftp_quit(conn); /* ignore errors on the QUIT */
 +
 +  if(ftpc->entrypath) {
 +    struct Curl_easy *data = conn->data;
 +    if(data->state.most_recent_ftp_entrypath == ftpc->entrypath) {
 +      data->state.most_recent_ftp_entrypath = NULL;
 +    }
 +    free(ftpc->entrypath);
 +    ftpc->entrypath = NULL;
 +  }
 +
 +  freedirs(ftpc);
 +  free(ftpc->prevpath);
 +  ftpc->prevpath = NULL;
 +  free(ftpc->server_os);
 +  ftpc->server_os = NULL;
 +
 +  Curl_pp_disconnect(pp);
 +
 +#ifdef HAVE_GSSAPI
 +  Curl_sec_end(conn);
 +#endif
 +
 +  return CURLE_OK;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_parse_url_path()
 + *
 + * Parse the URL path into separate path components.
 + *
 + */
 +static
 +CURLcode ftp_parse_url_path(struct connectdata *conn)
 +{
 +  struct Curl_easy *data = conn->data;
 +  /* the ftp struct is already inited in ftp_connect() */
 +  struct FTP *ftp = data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  const char *slash_pos;  /* position of the first '/' char in curpos */
 +  const char *path_to_use = data->state.path;
 +  const char *cur_pos;
 +  const char *filename = NULL;
 +
 +  cur_pos = path_to_use; /* current position in path. point at the begin of
 +                            next path component */
 +
 +  ftpc->ctl_valid = FALSE;
 +  ftpc->cwdfail = FALSE;
 +
 +  switch(data->set.ftp_filemethod) {
 +  case FTPFILE_NOCWD:
 +    /* fastest, but less standard-compliant */
 +
 +    /*
 +      The best time to check whether the path is a file or directory is right
 +      here. so:
 +
 +      the first condition in the if() right here, is there just in case
 +      someone decides to set path to NULL one day
 +   */
 +    if(path_to_use[0] &&
 +       (path_to_use[strlen(path_to_use) - 1] != '/') )
 +      filename = path_to_use;  /* this is a full file path */
 +    /*
 +      else {
 +        ftpc->file is not used anywhere other than for operations on a file.
 +        In other words, never for directory operations.
 +        So we can safely leave filename as NULL here and use it as a
 +        argument in dir/file decisions.
 +      }
 +    */
 +    break;
 +
 +  case FTPFILE_SINGLECWD:
 +    /* get the last slash */
 +    if(!path_to_use[0]) {
 +      /* no dir, no file */
 +      ftpc->dirdepth = 0;
 +      break;
 +    }
-     slash_pos=strrchr(cur_pos, '/');
++    slash_pos = strrchr(cur_pos, '/');
 +    if(slash_pos || !*cur_pos) {
 +      size_t dirlen = slash_pos-cur_pos;
 +      CURLcode result;
 +
 +      ftpc->dirs = calloc(1, sizeof(ftpc->dirs[0]));
 +      if(!ftpc->dirs)
 +        return CURLE_OUT_OF_MEMORY;
 +
 +      if(!dirlen)
 +        dirlen++;
 +
 +      result = Curl_urldecode(conn->data, slash_pos ? cur_pos : "/",
 +                              slash_pos ? dirlen : 1,
 +                              &ftpc->dirs[0], NULL,
 +                              FALSE);
 +      if(result) {
 +        freedirs(ftpc);
 +        return result;
 +      }
 +      ftpc->dirdepth = 1; /* we consider it to be a single dir */
-       filename = slash_pos ? slash_pos+1 : cur_pos; /* rest is file name */
++      filename = slash_pos ? slash_pos + 1 : cur_pos; /* rest is file name */
 +    }
 +    else
 +      filename = cur_pos;  /* this is a file name only */
 +    break;
 +
 +  default: /* allow pretty much anything */
 +  case FTPFILE_MULTICWD:
 +    ftpc->dirdepth = 0;
 +    ftpc->diralloc = 5; /* default dir depth to allocate */
 +    ftpc->dirs = calloc(ftpc->diralloc, sizeof(ftpc->dirs[0]));
 +    if(!ftpc->dirs)
 +      return CURLE_OUT_OF_MEMORY;
 +
 +    /* we have a special case for listing the root dir only */
 +    if(!strcmp(path_to_use, "/")) {
 +      cur_pos++; /* make it point to the zero byte */
 +      ftpc->dirs[0] = strdup("/");
 +      ftpc->dirdepth++;
 +    }
 +    else {
 +      /* parse the URL path into separate path components */
 +      while((slash_pos = strchr(cur_pos, '/')) != NULL) {
 +        /* 1 or 0 pointer offset to indicate absolute directory */
 +        ssize_t absolute_dir = ((cur_pos - data->state.path > 0) &&
 +                                (ftpc->dirdepth == 0))?1:0;
 +
 +        /* seek out the next path component */
 +        if(slash_pos-cur_pos) {
 +          /* we skip empty path components, like "x//y" since the FTP command
 +             CWD requires a parameter and a non-existent parameter a) doesn't
 +             work on many servers and b) has no effect on the others. */
 +          size_t len = slash_pos - cur_pos + absolute_dir;
 +          CURLcode result =
 +            Curl_urldecode(conn->data, cur_pos - absolute_dir, len,
 +                           &ftpc->dirs[ftpc->dirdepth], NULL,
 +                           TRUE);
 +          if(result) {
 +            freedirs(ftpc);
 +            return result;
 +          }
 +        }
 +        else {
 +          cur_pos = slash_pos + 1; /* jump to the rest of the string */
 +          if(!ftpc->dirdepth) {
 +            /* path starts with a slash, add that as a directory */
 +            ftpc->dirs[ftpc->dirdepth] = strdup("/");
 +            if(!ftpc->dirs[ftpc->dirdepth++]) { /* run out of memory ... */
 +              failf(data, "no memory");
 +              freedirs(ftpc);
 +              return CURLE_OUT_OF_MEMORY;
 +            }
 +          }
 +          continue;
 +        }
 +
 +        cur_pos = slash_pos + 1; /* jump to the rest of the string */
 +        if(++ftpc->dirdepth >= ftpc->diralloc) {
 +          /* enlarge array */
 +          char **bigger;
 +          ftpc->diralloc *= 2; /* double the size each time */
 +          bigger = realloc(ftpc->dirs, ftpc->diralloc * sizeof(ftpc->dirs[0]));
 +          if(!bigger) {
 +            freedirs(ftpc);
 +            return CURLE_OUT_OF_MEMORY;
 +          }
 +          ftpc->dirs = bigger;
 +        }
 +      }
 +    }
 +    filename = cur_pos;  /* the rest is the file name */
 +    break;
 +  } /* switch */
 +
 +  if(filename && *filename) {
 +    CURLcode result =
 +      Curl_urldecode(conn->data, filename, 0,  &ftpc->file, NULL, TRUE);
 +
 +    if(result) {
 +      freedirs(ftpc);
 +      return result;
 +    }
 +  }
 +  else
-     ftpc->file=NULL; /* instead of point to a zero byte, we make it a NULL
-                        pointer */
++    ftpc->file = NULL; /* instead of point to a zero byte, we make it a NULL
++                          pointer */
 +
 +  if(data->set.upload && !ftpc->file && (ftp->transfer == FTPTRANSFER_BODY)) {
 +    /* We need a file name when uploading. Return error! */
 +    failf(data, "Uploading to a URL without a file name!");
 +    return CURLE_URL_MALFORMAT;
 +  }
 +
 +  ftpc->cwddone = FALSE; /* default to not done */
 +
 +  if(ftpc->prevpath) {
 +    /* prevpath is "raw" so we convert the input path before we compare the
 +       strings */
 +    size_t dlen;
 +    char *path;
 +    CURLcode result =
 +      Curl_urldecode(conn->data, data->state.path, 0, &path, &dlen, FALSE);
 +    if(result) {
 +      freedirs(ftpc);
 +      return result;
 +    }
 +
 +    dlen -= ftpc->file?strlen(ftpc->file):0;
 +    if((dlen == strlen(ftpc->prevpath)) &&
-        !strncmp(path, ftpc->prevpath, dlen)) {
++       !strncmp(path, ftpc->prevpath, dlen) &&
++       (ftpc->prevmethod == data->set.ftp_filemethod)) {
 +      infof(data, "Request has same path as previous transfer\n");
 +      ftpc->cwddone = TRUE;
 +    }
 +    free(path);
 +  }
 +
 +  return CURLE_OK;
 +}
 +
 +/* call this when the DO phase has completed */
 +static CURLcode ftp_dophase_done(struct connectdata *conn,
 +                                 bool connected)
 +{
 +  struct FTP *ftp = conn->data->req.protop;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +
 +  if(connected) {
 +    int completed;
 +    CURLcode result = ftp_do_more(conn, &completed);
 +
 +    if(result) {
 +      close_secondarysocket(conn);
 +      return result;
 +    }
 +  }
 +
 +  if(ftp->transfer != FTPTRANSFER_BODY)
 +    /* no data to transfer */
 +    Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
 +  else if(!connected)
 +    /* since we didn't connect now, we want do_more to get called */
 +    conn->bits.do_more = TRUE;
 +
 +  ftpc->ctl_valid = TRUE; /* seems good */
 +
 +  return CURLE_OK;
 +}
 +
 +/* called from multi.c while DOing */
 +static CURLcode ftp_doing(struct connectdata *conn,
 +                          bool *dophase_done)
 +{
 +  CURLcode result = ftp_multi_statemach(conn, dophase_done);
 +
 +  if(result)
 +    DEBUGF(infof(conn->data, "DO phase failed\n"));
 +  else if(*dophase_done) {
 +    result = ftp_dophase_done(conn, FALSE /* not connected */);
 +
 +    DEBUGF(infof(conn->data, "DO phase is complete2\n"));
 +  }
 +  return result;
 +}
 +
 +/***********************************************************************
 + *
 + * ftp_regular_transfer()
 + *
 + * The input argument is already checked for validity.
 + *
 + * Performs all commands done before a regular transfer between a local and a
 + * remote host.
 + *
 + * ftp->ctl_valid starts out as FALSE, and gets set to TRUE if we reach the
 + * ftp_done() function without finding any major problem.
 + */
 +static
 +CURLcode ftp_regular_transfer(struct connectdata *conn,
 +                              bool *dophase_done)
 +{
-   CURLcode result=CURLE_OK;
-   bool connected=FALSE;
++  CURLcode result = CURLE_OK;
++  bool connected = FALSE;
 +  struct Curl_easy *data = conn->data;
 +  struct ftp_conn *ftpc = &conn->proto.ftpc;
 +  data->req.size = -1; /* make sure this is unknown at this point */
 +
 +  Curl_pgrsSetUploadCounter(data, 0);
 +  Curl_pgrsSetDownloadCounter(data, 0);
 +  Curl_pgrsSetUploadSize(data, -1);
 +  Curl_pgrsSetDownloadSize(data, -1);
 +
 +  ftpc->ctl_valid = TRUE; /* starts good */
 +
 +  result = ftp_perform(conn,
 +                       &connected, /* have we connected after PASV/PORT */
 +                       dophase_done); /* all commands in the DO-phase done? */
 +
 +  if(!result) {
 +
 +    if(!*dophase_done)
 +      /* the DO phase has not completed yet */
 +      return CURLE_OK;
 +
 +    result = ftp_dophase_done(conn, connected);
 +
 +    if(result)
 +      return result;
 +  }
 +  else
 +    freedirs(ftpc);
 +
 +  return result;
 +}
 +
 +static CURLcode ftp_setup_connection(struct connectdata *conn)
 +{
 +  struct Curl_easy *data = conn->data;
 +  char *type;
 +  char command;
 +  struct FTP *ftp;
 +
-   if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
-     /* Unless we have asked to tunnel ftp operations through the proxy, we
-        switch and use HTTP operations only */
- #ifndef CURL_DISABLE_HTTP
-     if(conn->handler == &Curl_handler_ftp)
-       conn->handler = &Curl_handler_ftp_proxy;
-     else {
- #ifdef USE_SSL
-       conn->handler = &Curl_handler_ftps_proxy;
- #else
-       failf(data, "FTPS not supported!");
-       return CURLE_UNSUPPORTED_PROTOCOL;
- #endif
-     }
-     /* set it up as a HTTP connection instead */
-     return conn->handler->setup_connection(conn);
- #else
-     failf(data, "FTP over http proxy requires HTTP support built-in!");
-     return CURLE_UNSUPPORTED_PROTOCOL;
- #endif
-   }
- 
 +  conn->data->req.protop = ftp = malloc(sizeof(struct FTP));
 +  if(NULL == ftp)
 +    return CURLE_OUT_OF_MEMORY;
 +
 +  data->state.path++;   /* don't include the initial slash */
 +  data->state.slash_removed = TRUE; /* we've skipped the slash */
 +
 +  /* FTP URLs support an extension like ";type=<typecode>" that
 +   * we'll try to get now! */
 +  type = strstr(data->state.path, ";type=");
 +
 +  if(!type)
 +    type = strstr(conn->host.rawalloc, ";type=");
 +
 +  if(type) {
 +    *type = 0;                     /* it was in the middle of the hostname */
 +    command = Curl_raw_toupper(type[6]);
 +    conn->bits.type_set = TRUE;
 +
 +    switch(command) {
 +    case 'A': /* ASCII mode */
 +      data->set.prefer_ascii = TRUE;
 +      break;
 +
 +    case 'D': /* directory mode */
 +      data->set.ftp_list_only = TRUE;
 +      break;
 +
 +    case 'I': /* binary mode */
 +    default:
 +      /* switch off ASCII */
 +      data->set.prefer_ascii = FALSE;
 +      break;
 +    }
 +  }
 +
 +  /* get some initial data into the ftp struct */
 +  ftp->bytecountp = &conn->data->req.bytecount;
 +  ftp->transfer = FTPTRANSFER_BODY;
 +  ftp->downloadsize = 0;
 +
 +  /* No need to duplicate user+password, the connectdata struct won't change
 +     during a session, but we re-init them here since on subsequent inits
 +     since the conn struct may have changed or been replaced.
 +  */
 +  ftp->user = conn->user;
 +  ftp->passwd = conn->passwd;
 +  if(isBadFtpString(ftp->user))
 +    return CURLE_URL_MALFORMAT;
 +  if(isBadFtpString(ftp->passwd))
 +    return CURLE_URL_MALFORMAT;
 +
 +  conn->proto.ftpc.known_filesize = -1; /* unknown size for now */
 +
 +  return CURLE_OK;
 +}
 +
 +#endif /* CURL_DISABLE_FTP */
diff --cc Utilities/cmcurl/lib/mime.c
index 0000000,496f5e6..496f5e6
mode 000000,100644..100644
--- a/Utilities/cmcurl/lib/mime.c
+++ b/Utilities/cmcurl/lib/mime.c
diff --cc Utilities/cmcurl/lib/mime.h
index 0000000,a144857..a144857
mode 000000,100644..100644
--- a/Utilities/cmcurl/lib/mime.h
+++ b/Utilities/cmcurl/lib/mime.h
diff --cc Utilities/cmcurl/lib/select.c
index 4430072,0000000..b8e1868
mode 100644,000000..100644
--- a/Utilities/cmcurl/lib/select.c
+++ b/Utilities/cmcurl/lib/select.c
@@@ -1,583 -1,0 +1,583 @@@
 +/***************************************************************************
 + *                                  _   _ ____  _
 + *  Project                     ___| | | |  _ \| |
 + *                             / __| | | | |_) | |
 + *                            | (__| |_| |  _ <| |___
 + *                             \___|\___/|_| \_\_____|
 + *
 + * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 + *
 + * This software is licensed as described in the file COPYING, which
 + * you should have received as part of this distribution. The terms
 + * are also available at https://curl.haxx.se/docs/copyright.html.
 + *
 + * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 + * copies of the Software, and permit persons to whom the Software is
 + * furnished to do so, under the terms of the COPYING file.
 + *
 + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 + * KIND, either express or implied.
 + *
 + ***************************************************************************/
 +
 +#include "curl_setup.h"
 +
 +#ifdef HAVE_SYS_SELECT_H
 +#include <sys/select.h>
 +#endif
 +
 +#if !defined(HAVE_SELECT) && !defined(HAVE_POLL_FINE)
 +#error "We can't compile without select() or poll() support."
 +#endif
 +
 +#if defined(__BEOS__)
 +/* BeOS has FD_SET defined in socket.h */
 +#include <socket.h>
 +#endif
 +
 +#ifdef MSDOS
 +#include <dos.h>  /* delay() */
 +#endif
 +
 +#ifdef __VXWORKS__
 +#include <strings.h>  /* bzero() in FD_SET */
 +#endif
 +
 +#include <curl/curl.h>
 +
 +#include "urldata.h"
 +#include "connect.h"
 +#include "select.h"
 +#include "warnless.h"
 +
 +/* Convenience local macros */
 +#define ELAPSED_MS()  (int)curlx_tvdiff(curlx_tvnow(), initial_tv)
 +
 +int Curl_ack_eintr = 0;
 +#define ERROR_NOT_EINTR(error) (Curl_ack_eintr || error != EINTR)
 +
 +/*
 + * Internal function used for waiting a specific amount of ms
 + * in Curl_socket_check() and Curl_poll() when no file descriptor
 + * is provided to wait on, just being used to delay execution.
 + * WinSock select() and poll() timeout mechanisms need a valid
 + * socket descriptor in a not null file descriptor set to work.
 + * Waiting indefinitely with this function is not allowed, a
 + * zero or negative timeout value will return immediately.
 + * Timeout resolution, accuracy, as well as maximum supported
 + * value is system dependent, neither factor is a citical issue
 + * for the intended use of this function in the library.
 + *
 + * Return values:
 + *   -1 = system call error, invalid timeout value, or interrupted
 + *    0 = specified timeout has elapsed
 + */
 +int Curl_wait_ms(int timeout_ms)
 +{
 +#if !defined(MSDOS) && !defined(USE_WINSOCK)
 +#ifndef HAVE_POLL_FINE
 +  struct timeval pending_tv;
 +#endif
-   struct timeval initial_tv;
++  struct curltime initial_tv;
 +  int pending_ms;
 +  int error;
 +#endif
 +  int r = 0;
 +
 +  if(!timeout_ms)
 +    return 0;
 +  if(timeout_ms < 0) {
 +    SET_SOCKERRNO(EINVAL);
 +    return -1;
 +  }
 +#if defined(MSDOS)
 +  delay(timeout_ms);
 +#elif defined(USE_WINSOCK)
 +  Sleep(timeout_ms);
 +#else
 +  pending_ms = timeout_ms;
 +  initial_tv = curlx_tvnow();
 +  do {
 +#if defined(HAVE_POLL_FINE)
 +    r = poll(NULL, 0, pending_ms);
 +#else
 +    pending_tv.tv_sec = pending_ms / 1000;
 +    pending_tv.tv_usec = (pending_ms % 1000) * 1000;
 +    r = select(0, NULL, NULL, NULL, &pending_tv);
 +#endif /* HAVE_POLL_FINE */
 +    if(r != -1)
 +      break;
 +    error = SOCKERRNO;
 +    if(error && ERROR_NOT_EINTR(error))
 +      break;
 +    pending_ms = timeout_ms - ELAPSED_MS();
 +    if(pending_ms <= 0) {
 +      r = 0;  /* Simulate a "call timed out" case */
 +      break;
 +    }
 +  } while(r == -1);
 +#endif /* USE_WINSOCK */
 +  if(r)
 +    r = -1;
 +  return r;
 +}
 +
 +/*
 + * Wait for read or write events on a set of file descriptors. It uses poll()
 + * when a fine poll() is available, in order to avoid limits with FD_SETSIZE,
 + * otherwise select() is used.  An error is returned if select() is being used
 + * and a file descriptor is too large for FD_SETSIZE.
 + *
 + * A negative timeout value makes this function wait indefinitely,
 + * unless no valid file descriptor is given, when this happens the
 + * negative timeout is ignored and the function times out immediately.
 + *
 + * Return values:
 + *   -1 = system call error or fd >= FD_SETSIZE
 + *    0 = timeout
 + *    [bitmask] = action as described below
 + *
 + * CURL_CSELECT_IN - first socket is readable
 + * CURL_CSELECT_IN2 - second socket is readable
 + * CURL_CSELECT_OUT - write socket is writable
 + * CURL_CSELECT_ERR - an error condition occurred
 + */
 +int Curl_socket_check(curl_socket_t readfd0, /* two sockets to read from */
 +                      curl_socket_t readfd1,
 +                      curl_socket_t writefd, /* socket to write to */
 +                      time_t timeout_ms)     /* milliseconds to wait */
 +{
 +#ifdef HAVE_POLL_FINE
 +  struct pollfd pfd[3];
 +  int num;
 +#else
 +  struct timeval pending_tv;
 +  struct timeval *ptimeout;
 +  fd_set fds_read;
 +  fd_set fds_write;
 +  fd_set fds_err;
 +  curl_socket_t maxfd;
 +#endif
-   struct timeval initial_tv = {0, 0};
++  struct curltime initial_tv = {0, 0};
 +  int pending_ms = 0;
 +  int error;
 +  int r;
 +  int ret;
 +
 +#if SIZEOF_TIME_T != SIZEOF_INT
 +  /* wrap-around precaution */
 +  if(timeout_ms >= INT_MAX)
 +    timeout_ms = INT_MAX;
 +#endif
 +
 +  if((readfd0 == CURL_SOCKET_BAD) && (readfd1 == CURL_SOCKET_BAD) &&
 +     (writefd == CURL_SOCKET_BAD)) {
 +    /* no sockets, just wait */
 +    r = Curl_wait_ms((int)timeout_ms);
 +    return r;
 +  }
 +
 +  /* Avoid initial timestamp, avoid curlx_tvnow() call, when elapsed
 +     time in this function does not need to be measured. This happens
 +     when function is called with a zero timeout or a negative timeout
 +     value indicating a blocking call should be performed. */
 +
 +  if(timeout_ms > 0) {
 +    pending_ms = (int)timeout_ms;
 +    initial_tv = curlx_tvnow();
 +  }
 +
 +#ifdef HAVE_POLL_FINE
 +
 +  num = 0;
 +  if(readfd0 != CURL_SOCKET_BAD) {
 +    pfd[num].fd = readfd0;
 +    pfd[num].events = POLLRDNORM|POLLIN|POLLRDBAND|POLLPRI;
 +    pfd[num].revents = 0;
 +    num++;
 +  }
 +  if(readfd1 != CURL_SOCKET_BAD) {
 +    pfd[num].fd = readfd1;
 +    pfd[num].events = POLLRDNORM|POLLIN|POLLRDBAND|POLLPRI;
 +    pfd[num].revents = 0;
 +    num++;
 +  }
 +  if(writefd != CURL_SOCKET_BAD) {
 +    pfd[num].fd = writefd;
 +    pfd[num].events = POLLWRNORM|POLLOUT;
 +    pfd[num].revents = 0;
 +    num++;
 +  }
 +
 +  do {
 +    if(timeout_ms < 0)
 +      pending_ms = -1;
 +    else if(!timeout_ms)
 +      pending_ms = 0;
 +    r = poll(pfd, num, pending_ms);
 +    if(r != -1)
 +      break;
 +    error = SOCKERRNO;
 +    if(error && ERROR_NOT_EINTR(error))
 +      break;
 +    if(timeout_ms > 0) {
 +      pending_ms = (int)(timeout_ms - ELAPSED_MS());
 +      if(pending_ms <= 0) {
 +        r = 0;  /* Simulate a "call timed out" case */
 +        break;
 +      }
 +    }
 +  } while(r == -1);
 +
 +  if(r < 0)
 +    return -1;
 +  if(r == 0)
 +    return 0;
 +
 +  ret = 0;
 +  num = 0;
 +  if(readfd0 != CURL_SOCKET_BAD) {
 +    if(pfd[num].revents & (POLLRDNORM|POLLIN|POLLERR|POLLHUP))
 +      ret |= CURL_CSELECT_IN;
 +    if(pfd[num].revents & (POLLRDBAND|POLLPRI|POLLNVAL))
 +      ret |= CURL_CSELECT_ERR;
 +    num++;
 +  }
 +  if(readfd1 != CURL_SOCKET_BAD) {
 +    if(pfd[num].revents & (POLLRDNORM|POLLIN|POLLERR|POLLHUP))
 +      ret |= CURL_CSELECT_IN2;
 +    if(pfd[num].revents & (POLLRDBAND|POLLPRI|POLLNVAL))
 +      ret |= CURL_CSELECT_ERR;
 +    num++;
 +  }
 +  if(writefd != CURL_SOCKET_BAD) {
 +    if(pfd[num].revents & (POLLWRNORM|POLLOUT))
 +      ret |= CURL_CSELECT_OUT;
 +    if(pfd[num].revents & (POLLERR|POLLHUP|POLLNVAL))
 +      ret |= CURL_CSELECT_ERR;
 +  }
 +
 +  return ret;
 +
 +#else  /* HAVE_POLL_FINE */
 +
 +  FD_ZERO(&fds_err);
 +  maxfd = (curl_socket_t)-1;
 +
 +  FD_ZERO(&fds_read);
 +  if(readfd0 != CURL_SOCKET_BAD) {
 +    VERIFY_SOCK(readfd0);
 +    FD_SET(readfd0, &fds_read);
 +    FD_SET(readfd0, &fds_err);
 +    maxfd = readfd0;
 +  }
 +  if(readfd1 != CURL_SOCKET_BAD) {
 +    VERIFY_SOCK(readfd1);
 +    FD_SET(readfd1, &fds_read);
 +    FD_SET(readfd1, &fds_err);
 +    if(readfd1 > maxfd)
 +      maxfd = readfd1;
 +  }
 +
 +  FD_ZERO(&fds_write);
 +  if(writefd != CURL_SOCKET_BAD) {
 +    VERIFY_SOCK(writefd);
 +    FD_SET(writefd, &fds_write);
 +    FD_SET(writefd, &fds_err);
 +    if(writefd > maxfd)
 +      maxfd = writefd;
 +  }
 +
 +  ptimeout = (timeout_ms < 0) ? NULL : &pending_tv;
 +
 +  do {
 +    if(timeout_ms > 0) {
 +      pending_tv.tv_sec = pending_ms / 1000;
 +      pending_tv.tv_usec = (pending_ms % 1000) * 1000;
 +    }
 +    else if(!timeout_ms) {
 +      pending_tv.tv_sec = 0;
 +      pending_tv.tv_usec = 0;
 +    }
 +
 +    /* WinSock select() must not be called with an fd_set that contains zero
 +       fd flags, or it will return WSAEINVAL.  But, it also can't be called
 +       with no fd_sets at all!  From the documentation:
 +
 +         Any two of the parameters, readfds, writefds, or exceptfds, can be
 +         given as null. At least one must be non-null, and any non-null
 +         descriptor set must contain at least one handle to a socket.
 +
 +       We know that we have at least one bit set in at least two fd_sets in
 +       this case, but we may have no bits set in either fds_read or fd_write,
 +       so check for that and handle it.  Luckily, with WinSock, we can _also_
 +       ask how many bits are set on an fd_set.
 +
 +       It is unclear why WinSock doesn't just handle this for us instead of
 +       calling this an error.
 +
 +       Note also that WinSock ignores the first argument, so we don't worry
 +       about the fact that maxfd is computed incorrectly with WinSock (since
 +       curl_socket_t is unsigned in such cases and thus -1 is the largest
 +       value).
 +    */
 +#ifdef USE_WINSOCK
 +    r = select((int)maxfd + 1,
 +               fds_read.fd_count ? &fds_read : NULL,
 +               fds_write.fd_count ? &fds_write : NULL,
 +               &fds_err, ptimeout);
 +#else
 +    r = select((int)maxfd + 1, &fds_read, &fds_write, &fds_err, ptimeout);
 +#endif
 +
 +    if(r != -1)
 +      break;
 +    error = SOCKERRNO;
 +    if(error && ERROR_NOT_EINTR(error))
 +      break;
 +    if(timeout_ms > 0) {
 +      pending_ms = (int)(timeout_ms - ELAPSED_MS());
 +      if(pending_ms <= 0) {
 +        r = 0;  /* Simulate a "call timed out" case */
 +        break;
 +      }
 +    }
 +  } while(r == -1);
 +
 +  if(r < 0)
 +    return -1;
 +  if(r == 0)
 +    return 0;
 +
 +  ret = 0;
 +  if(readfd0 != CURL_SOCKET_BAD) {
 +    if(FD_ISSET(readfd0, &fds_read))
 +      ret |= CURL_CSELECT_IN;
 +    if(FD_ISSET(readfd0, &fds_err))
 +      ret |= CURL_CSELECT_ERR;
 +  }
 +  if(readfd1 != CURL_SOCKET_BAD) {
 +    if(FD_ISSET(readfd1, &fds_read))
 +      ret |= CURL_CSELECT_IN2;
 +    if(FD_ISSET(readfd1, &fds_err))
 +      ret |= CURL_CSELECT_ERR;
 +  }
 +  if(writefd != CURL_SOCKET_BAD) {
 +    if(FD_ISSET(writefd, &fds_write))
 +      ret |= CURL_CSELECT_OUT;
 +    if(FD_ISSET(writefd, &fds_err))
 +      ret |= CURL_CSELECT_ERR;
 +  }
 +
 +  return ret;
 +
 +#endif  /* HAVE_POLL_FINE */
 +
 +}
 +
 +/*
 + * This is a wrapper around poll().  If poll() does not exist, then
 + * select() is used instead.  An error is returned if select() is
 + * being used and a file descriptor is too large for FD_SETSIZE.
 + * A negative timeout value makes this function wait indefinitely,
 + * unless no valid file descriptor is given, when this happens the
 + * negative timeout is ignored and the function times out immediately.
 + *
 + * Return values:
 + *   -1 = system call error or fd >= FD_SETSIZE
 + *    0 = timeout
 + *    N = number of structures with non zero revent fields
 + */
 +int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms)
 +{
 +#ifndef HAVE_POLL_FINE
 +  struct timeval pending_tv;
 +  struct timeval *ptimeout;
 +  fd_set fds_read;
 +  fd_set fds_write;
 +  fd_set fds_err;
 +  curl_socket_t maxfd;
 +#endif
-   struct timeval initial_tv = {0, 0};
++  struct curltime initial_tv = {0, 0};
 +  bool fds_none = TRUE;
 +  unsigned int i;
 +  int pending_ms = 0;
 +  int error;
 +  int r;
 +
 +  if(ufds) {
 +    for(i = 0; i < nfds; i++) {
 +      if(ufds[i].fd != CURL_SOCKET_BAD) {
 +        fds_none = FALSE;
 +        break;
 +      }
 +    }
 +  }
 +  if(fds_none) {
 +    r = Curl_wait_ms(timeout_ms);
 +    return r;
 +  }
 +
 +  /* Avoid initial timestamp, avoid curlx_tvnow() call, when elapsed
 +     time in this function does not need to be measured. This happens
 +     when function is called with a zero timeout or a negative timeout
 +     value indicating a blocking call should be performed. */
 +
 +  if(timeout_ms > 0) {
 +    pending_ms = timeout_ms;
 +    initial_tv = curlx_tvnow();
 +  }
 +
 +#ifdef HAVE_POLL_FINE
 +
 +  do {
 +    if(timeout_ms < 0)
 +      pending_ms = -1;
 +    else if(!timeout_ms)
 +      pending_ms = 0;
 +    r = poll(ufds, nfds, pending_ms);
 +    if(r != -1)
 +      break;
 +    error = SOCKERRNO;
 +    if(error && ERROR_NOT_EINTR(error))
 +      break;
 +    if(timeout_ms > 0) {
 +      pending_ms = (int)(timeout_ms - ELAPSED_MS());
 +      if(pending_ms <= 0) {
 +        r = 0;  /* Simulate a "call timed out" case */
 +        break;
 +      }
 +    }
 +  } while(r == -1);
 +
 +  if(r < 0)
 +    return -1;
 +  if(r == 0)
 +    return 0;
 +
 +  for(i = 0; i < nfds; i++) {
 +    if(ufds[i].fd == CURL_SOCKET_BAD)
 +      continue;
 +    if(ufds[i].revents & POLLHUP)
 +      ufds[i].revents |= POLLIN;
 +    if(ufds[i].revents & POLLERR)
 +      ufds[i].revents |= (POLLIN|POLLOUT);
 +  }
 +
 +#else  /* HAVE_POLL_FINE */
 +
 +  FD_ZERO(&fds_read);
 +  FD_ZERO(&fds_write);
 +  FD_ZERO(&fds_err);
 +  maxfd = (curl_socket_t)-1;
 +
 +  for(i = 0; i < nfds; i++) {
 +    ufds[i].revents = 0;
 +    if(ufds[i].fd == CURL_SOCKET_BAD)
 +      continue;
 +    VERIFY_SOCK(ufds[i].fd);
 +    if(ufds[i].events & (POLLIN|POLLOUT|POLLPRI|
 +                          POLLRDNORM|POLLWRNORM|POLLRDBAND)) {
 +      if(ufds[i].fd > maxfd)
 +        maxfd = ufds[i].fd;
 +      if(ufds[i].events & (POLLRDNORM|POLLIN))
 +        FD_SET(ufds[i].fd, &fds_read);
 +      if(ufds[i].events & (POLLWRNORM|POLLOUT))
 +        FD_SET(ufds[i].fd, &fds_write);
 +      if(ufds[i].events & (POLLRDBAND|POLLPRI))
 +        FD_SET(ufds[i].fd, &fds_err);
 +    }
 +  }
 +
 +#ifdef USE_WINSOCK
 +  /* WinSock select() can't handle zero events.  See the comment about this in
 +     Curl_check_socket(). */
 +  if(fds_read.fd_count == 0 && fds_write.fd_count == 0
 +     && fds_err.fd_count == 0) {
 +    r = Curl_wait_ms(timeout_ms);
 +    return r;
 +  }
 +#endif
 +
 +  ptimeout = (timeout_ms < 0) ? NULL : &pending_tv;
 +
 +  do {
 +    if(timeout_ms > 0) {
 +      pending_tv.tv_sec = pending_ms / 1000;
 +      pending_tv.tv_usec = (pending_ms % 1000) * 1000;
 +    }
 +    else if(!timeout_ms) {
 +      pending_tv.tv_sec = 0;
 +      pending_tv.tv_usec = 0;
 +    }
 +
 +#ifdef USE_WINSOCK
 +    r = select((int)maxfd + 1,
 +               /* WinSock select() can't handle fd_sets with zero bits set, so
 +                  don't give it such arguments.  See the comment about this in
 +                  Curl_check_socket().
 +               */
 +               fds_read.fd_count ? &fds_read : NULL,
 +               fds_write.fd_count ? &fds_write : NULL,
 +               fds_err.fd_count ? &fds_err : NULL, ptimeout);
 +#else
 +    r = select((int)maxfd + 1, &fds_read, &fds_write, &fds_err, ptimeout);
 +#endif
 +    if(r != -1)
 +      break;
 +    error = SOCKERRNO;
 +    if(error && ERROR_NOT_EINTR(error))
 +      break;
 +    if(timeout_ms > 0) {
 +      pending_ms = timeout_ms - ELAPSED_MS();
 +      if(pending_ms <= 0) {
 +        r = 0;  /* Simulate a "call timed out" case */
 +        break;
 +      }
 +    }
 +  } while(r == -1);
 +
 +  if(r < 0)
 +    return -1;
 +  if(r == 0)
 +    return 0;
 +
 +  r = 0;
 +  for(i = 0; i < nfds; i++) {
 +    ufds[i].revents = 0;
 +    if(ufds[i].fd == CURL_SOCKET_BAD)
 +      continue;
 +    if(FD_ISSET(ufds[i].fd, &fds_read))
 +      ufds[i].revents |= POLLIN;
 +    if(FD_ISSET(ufds[i].fd, &fds_write))
 +      ufds[i].revents |= POLLOUT;
 +    if(FD_ISSET(ufds[i].fd, &fds_err))
 +      ufds[i].revents |= POLLPRI;
 +    if(ufds[i].revents != 0)
 +      r++;
 +  }
 +
 +#endif  /* HAVE_POLL_FINE */
 +
 +  return r;
 +}
 +
 +#ifdef TPF
 +/*
 + * This is a replacement for select() on the TPF platform.
 + * It is used whenever libcurl calls select().
 + * The call below to tpf_process_signals() is required because
 + * TPF's select calls are not signal interruptible.
 + *
 + * Return values are the same as select's.
 + */
- int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes,
-                        fd_set* excepts, struct timeval* tv)
++int tpf_select_libcurl(int maxfds, fd_set *reads, fd_set *writes,
++                       fd_set *excepts, struct timeval *tv)
 +{
 +   int rc;
 +
 +   rc = tpf_select_bsd(maxfds, reads, writes, excepts, tv);
 +   tpf_process_signals();
 +   return rc;
 +}
 +#endif /* TPF */

https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=de7c21d677db1ddaeece03c19e13e448f4031511
commit de7c21d677db1ddaeece03c19e13e448f4031511
Author:     Curl Upstream <curl-library at cool.haxx.se>
AuthorDate: Wed Oct 4 07:52:15 2017 +0200
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 11:15:03 2017 -0400

    curl 2017-10-04 (3ea76790)
    
    Code extracted from:
    
        https://github.com/curl/curl.git
    
    at commit 3ea76790571c1f7cf1bed34fabffd3cc20ad3dd3 (curl-7_56_0).

diff --git a/CMake/Macros.cmake b/CMake/Macros.cmake
index dab005f..82aadca 100644
--- a/CMake/Macros.cmake
+++ b/CMake/Macros.cmake
@@ -93,3 +93,32 @@ macro(CURL_INTERNAL_TEST_RUN CURL_TEST)
     endif(${CURL_TEST}_COMPILE AND NOT ${CURL_TEST})
   endif()
 endmacro(CURL_INTERNAL_TEST_RUN)
+
+macro(CURL_NROFF_CHECK)
+  find_program(NROFF NAMES gnroff nroff)
+  if(NROFF)
+    # Need a way to write to stdin, this will do
+    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
+    # Tests for a valid nroff option to generate a manpage
+    foreach(_MANOPT "-man" "-mandoc")
+      execute_process(COMMAND "${NROFF}" ${_MANOPT}
+        OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
+        INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
+        ERROR_QUIET)
+      # Save the option if it was valid
+      if(NROFF_MANOPT_OUTPUT)
+        message("Found *nroff option: -- ${_MANOPT}")
+        set(NROFF_MANOPT ${_MANOPT})
+        set(NROFF_USEFUL ON)
+        break()
+      endif()
+    endforeach()
+    # No need for the temporary file
+    file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
+    if(NOT NROFF_USEFUL)
+      message(WARNING "Found no *nroff option to get plaintext from man pages")
+    endif()
+  else()
+    message(WARNING "Found no *nroff program")
+  endif()
+endmacro(CURL_NROFF_CHECK)
diff --git a/CMake/OtherTests.cmake b/CMake/OtherTests.cmake
index 3b203c5..989f04e 100644
--- a/CMake/OtherTests.cmake
+++ b/CMake/OtherTests.cmake
@@ -32,9 +32,9 @@ int main(void) {
 if(curl_cv_recv)
   if(NOT DEFINED curl_cv_func_recv_args OR "${curl_cv_func_recv_args}" STREQUAL "unknown")
     foreach(recv_retv "int" "ssize_t" )
-      foreach(recv_arg1 "int" "ssize_t" "SOCKET")
-        foreach(recv_arg2 "void *" "char *")
-          foreach(recv_arg3 "size_t" "int" "socklen_t" "unsigned int")
+      foreach(recv_arg1 "SOCKET" "int" )
+        foreach(recv_arg2 "char *" "void *" )
+          foreach(recv_arg3 "int" "size_t" "socklen_t" "unsigned int")
             foreach(recv_arg4 "int" "unsigned int")
               if(NOT curl_cv_func_recv_done)
                 unset(curl_cv_func_recv_test CACHE)
@@ -96,9 +96,9 @@ int main(void) {
 if(curl_cv_send)
   if(NOT DEFINED curl_cv_func_send_args OR "${curl_cv_func_send_args}" STREQUAL "unknown")
     foreach(send_retv "int" "ssize_t" )
-      foreach(send_arg1 "int" "ssize_t" "SOCKET")
-        foreach(send_arg2 "const void *" "void *" "char *" "const char *")
-          foreach(send_arg3 "size_t" "int" "socklen_t" "unsigned int")
+      foreach(send_arg1 "SOCKET" "int" "ssize_t" )
+        foreach(send_arg2 "const char *" "const void *" "void *" "char *")
+          foreach(send_arg3 "int" "size_t" "socklen_t" "unsigned int")
             foreach(send_arg4 "int" "unsigned int")
               if(NOT curl_cv_func_send_done)
                 unset(curl_cv_func_send_test CACHE)
diff --git a/CMake/cmake_uninstall.cmake.in b/CMake/cmake_uninstall.cmake.in
new file mode 100644
index 0000000..d00a516
--- /dev/null
+++ b/CMake/cmake_uninstall.cmake.in
@@ -0,0 +1,26 @@
+if(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+  message(FATAL_ERROR "Cannot find install manifest: @CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+endif(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+
+if (NOT DEFINED CMAKE_INSTALL_PREFIX)
+  set (CMAKE_INSTALL_PREFIX "@CMAKE_INSTALL_PREFIX@")
+endif ()
+ message(${CMAKE_INSTALL_PREFIX})
+
+file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+foreach(file ${files})
+  message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
+  if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    exec_program(
+      "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
+      OUTPUT_VARIABLE rm_out
+      RETURN_VALUE rm_retval
+      )
+    if(NOT "${rm_retval}" STREQUAL 0)
+      message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
+    endif(NOT "${rm_retval}" STREQUAL 0)
+  else(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
+  endif(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+endforeach(file)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d2e1c2b..261baba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+# Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -43,6 +43,7 @@ set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
 include(Utilities)
 include(Macros)
 include(CMakeDependentOption)
+include(CheckCCompilerFlag)
 
 project( CURL C )
 
@@ -72,20 +73,36 @@ set(OS "\"${CMAKE_SYSTEM_NAME}\"")
 include_directories(${PROJECT_BINARY_DIR}/include/curl)
 include_directories( ${CURL_SOURCE_DIR}/include )
 
+option(CURL_WERROR "Turn compiler warnings into errors" OFF)
+option(PICKY_COMPILER "Enable picky compiler options" ON)
 option(BUILD_CURL_EXE "Set to ON to build curl executable." ON)
 option(CURL_STATICLIB "Set to ON to build libcurl with static linking." OFF)
 option(ENABLE_ARES "Set to ON to enable c-ares support" OFF)
 if(WIN32)
-  CMAKE_DEPENDENT_OPTION(ENABLE_THREADED_RESOLVER
-                         "Set to ON to enable threaded DNS lookup"
-                         ON "NOT ENABLE_ARES"
-                         OFF)
-else()
-  option(ENABLE_THREADED_RESOLVER "Set to ON to enable POSIX threaded DNS lookup" OFF)
+  option(CURL_STATIC_CRT "Set to ON to build libcurl with static CRT on Windows (/MT)." OFF)
+  option(ENABLE_INET_PTON "Set to OFF to prevent usage of inet_pton when building against modern SDKs while still requiring compatibility with older Windows versions, such as Windows XP, Windows Server 2003 etc." ON)
 endif()
+
+CMAKE_DEPENDENT_OPTION(ENABLE_THREADED_RESOLVER "Set to ON to enable threaded DNS lookup"
+        ON "NOT ENABLE_ARES"
+        OFF)
+
 option(ENABLE_DEBUG "Set to ON to enable curl debug features" OFF)
 option(ENABLE_CURLDEBUG "Set to ON to build with TrackMemory feature enabled" OFF)
 
+if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
+  if (PICKY_COMPILER)
+    foreach (_CCOPT -pedantic -Wall -W -Wpointer-arith -Wwrite-strings -Wunused -Wshadow -Winline -Wnested-externs -Wmissing-declarations -Wmissing-prototypes -Wno-long-long -Wfloat-equal -Wno-multichar -Wsign-compare -Wundef -Wno-format-nonliteral -Wendif-labels -Wstrict-prototypes -Wdeclaration-after-statement -Wstrict-aliasing=3 -Wcast-align -Wtype-limits -Wold-style-declaration -Wmissing-parameter-type -Wempty-body -Wclobbered -Wignored-qualifiers -Wconversion -Wno-sign-conversion -Wvla -Wdouble-promotion -Wno-system-headers)
+      # surprisingly, CHECK_C_COMPILER_FLAG needs a new variable to store each new
+      # test result in.
+      CHECK_C_COMPILER_FLAG(${_CCOPT} OPT${_CCOPT})
+      if(OPT${_CCOPT})
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${_CCOPT}")
+      endif()
+    endforeach()
+  endif(PICKY_COMPILER)
+endif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_CLANG)
+
 if (ENABLE_DEBUG)
   # DEBUGBUILD will be defined only for Debug builds
   if(NOT CMAKE_VERSION VERSION_LESS 3.0)
@@ -100,13 +117,12 @@ if (ENABLE_CURLDEBUG)
   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS CURLDEBUG)
 endif()
 
+# For debug libs and exes, add "-d" postfix
+set(CMAKE_DEBUG_POSTFIX "-d" CACHE STRING "Set debug library postfix")
+
 # initialize CURL_LIBS
 set(CURL_LIBS "")
 
-if(ENABLE_THREADED_RESOLVER AND ENABLE_ARES)
-  message(FATAL_ERROR "Options ENABLE_THREADED_RESOLVER and ENABLE_ARES are mutually exclusive")
-endif()
-
 if(ENABLE_ARES)
   set(USE_ARES 1)
   find_package(CARES REQUIRED)
@@ -114,11 +130,6 @@ if(ENABLE_ARES)
   set(CURL_LIBS ${CURL_LIBS} ${CARES_LIBRARY})
 endif()
 
-if(MSVC)
-  option(BUILD_RELEASE_DEBUG_DIRS "Set OFF to build each configuration to a separate directory" OFF)
-  mark_as_advanced(BUILD_RELEASE_DEBUG_DIRS)
-endif()
-
 include(CurlSymbolHiding)
 
 option(HTTP_ONLY "disables all protocols except HTTP (This overrides all CURL_DISABLE_* options)" OFF)
@@ -176,8 +187,6 @@ option(CURL_DISABLE_CRYPTO_AUTH "to disable cryptographic authentication" OFF)
 mark_as_advanced(CURL_DISABLE_CRYPTO_AUTH)
 option(CURL_DISABLE_VERBOSE_STRINGS "to disable verbose strings" OFF)
 mark_as_advanced(CURL_DISABLE_VERBOSE_STRINGS)
-option(DISABLED_THREADSAFE "Set to explicitly specify we don't want to use thread-safe functions" OFF)
-mark_as_advanced(DISABLED_THREADSAFE)
 option(ENABLE_IPV6 "Define if you want to enable IPv6 support" ON)
 mark_as_advanced(ENABLE_IPV6)
 if(ENABLE_IPV6 AND NOT WIN32)
@@ -194,48 +203,45 @@ if(ENABLE_IPV6 AND NOT WIN32)
   endif()
 endif()
 
-option(ENABLE_MANUAL "to provide the built-in manual" ON)
-unset(USE_MANUAL CACHE) # TODO: cache NROFF/NROFF_MANOPT/USE_MANUAL vars?
+CURL_NROFF_CHECK()
+find_package(Perl)
+
+CMAKE_DEPENDENT_OPTION(ENABLE_MANUAL "to provide the built-in manual"
+    ON "NROFF_USEFUL;PERL_FOUND"
+    OFF)
+
+if(NOT PERL_FOUND)
+  message(STATUS "Perl not found, testing disabled.")
+  set(BUILD_TESTING OFF)
+endif()
 if(ENABLE_MANUAL)
-  find_program(NROFF NAMES gnroff nroff)
-  if(NROFF)
-    # Need a way to write to stdin, this will do
-    file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt" "test")
-    # Tests for a valid nroff option to generate a manpage
-    foreach(_MANOPT "-man" "-mandoc")
-      execute_process(COMMAND "${NROFF}" ${_MANOPT}
-        OUTPUT_VARIABLE NROFF_MANOPT_OUTPUT
-        INPUT_FILE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt"
-        ERROR_QUIET)
-      # Save the option if it was valid
-      if(NROFF_MANOPT_OUTPUT)
-        message("Found *nroff option: -- ${_MANOPT}")
-        set(NROFF_MANOPT ${_MANOPT})
-        set(USE_MANUAL 1)
-        break()
-      endif()
-    endforeach()
-    # No need for the temporary file
-    file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/nroff-input.txt")
-    if(NOT USE_MANUAL)
-      message(WARNING "Found no *nroff option to get plaintext from man pages")
-    endif()
-  else()
-    message(WARNING "Found no *nroff program")
-  endif()
+  set(USE_MANUAL ON)
 endif()
-# Required for building manual, docs, tests
-find_package(Perl REQUIRED)
 
 # We need ansi c-flags, especially on HP
 set(CMAKE_C_FLAGS "${CMAKE_ANSI_CFLAGS} ${CMAKE_C_FLAGS}")
 set(CMAKE_REQUIRED_FLAGS ${CMAKE_ANSI_CFLAGS})
 
+if(CURL_STATIC_CRT)
+  set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /MT")
+  set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /MTd")
+endif()
+
 # Disable warnings on Borland to avoid changing 3rd party code.
 if(BORLAND)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -w-")
 endif(BORLAND)
 
+if(CURL_WERROR)
+  if(MSVC_VERSION)
+    set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} /WX")
+    set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /WX")
+  else()
+    # this assumes clang or gcc style options
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")
+  endif()
+endif(CURL_WERROR)
+
 # If we are on AIX, do the _ALL_SOURCE magic
 if(${CMAKE_SYSTEM_NAME} MATCHES AIX)
   set(_ALL_SOURCE 1)
@@ -258,19 +264,14 @@ if(WIN32)
 endif(WIN32)
 
 if(ENABLE_THREADED_RESOLVER)
+  find_package(Threads REQUIRED)
   if(WIN32)
     set(USE_THREADS_WIN32 ON)
   else()
-    check_include_file_concat("pthread.h" HAVE_PTHREAD_H)
-    if(HAVE_PTHREAD_H)
-      set(CMAKE_THREAD_PREFER_PTHREAD 1)
-      find_package(Threads)
-      if(CMAKE_USE_PTHREADS_INIT)
-        set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
-        set(USE_THREADS_POSIX 1)
-      endif()
-    endif()
+    set(USE_THREADS_POSIX ${CMAKE_USE_PTHREADS_INIT})
+    set(HAVE_PTHREAD_H ${CMAKE_USE_PTHREADS_INIT})
   endif()
+  set(CURL_LIBS ${CURL_LIBS} ${CMAKE_THREAD_LIBS_INIT})
 endif()
 
 # Check for all needed libraries
@@ -795,50 +796,6 @@ if(NOT HAVE_SIZEOF_SSIZE_T)
 endif(NOT HAVE_SIZEOF_SSIZE_T)
 # off_t is sized later, after the HAVE_FILE_OFFSET_BITS test
 
-# Different sizeofs, etc.
-
-#    define CURL_SIZEOF_LONG        4
-#    define CURL_TYPEOF_CURL_OFF_T  long long
-#    define CURL_FORMAT_CURL_OFF_T  "lld"
-#    define CURL_FORMAT_CURL_OFF_TU "llu"
-#    define CURL_FORMAT_OFF_T       "%lld"
-#    define CURL_SIZEOF_CURL_OFF_T  8
-#    define CURL_SUFFIX_CURL_OFF_T  LL
-#    define CURL_SUFFIX_CURL_OFF_TU ULL
-
-set(CURL_SIZEOF_LONG ${SIZEOF_LONG})
-
-if(SIZEOF_LONG EQUAL 8)
-  set(CURL_TYPEOF_CURL_OFF_T long)
-  set(CURL_SIZEOF_CURL_OFF_T 8)
-  set(CURL_FORMAT_CURL_OFF_T "ld")
-  set(CURL_FORMAT_CURL_OFF_TU "lu")
-  set(CURL_FORMAT_OFF_T "%ld")
-  set(CURL_SUFFIX_CURL_OFF_T L)
-  set(CURL_SUFFIX_CURL_OFF_TU UL)
-endif(SIZEOF_LONG EQUAL 8)
-
-if(SIZEOF_LONG_LONG EQUAL 8)
-  set(CURL_TYPEOF_CURL_OFF_T "long long")
-  set(CURL_SIZEOF_CURL_OFF_T 8)
-  set(CURL_FORMAT_CURL_OFF_T "lld")
-  set(CURL_FORMAT_CURL_OFF_TU "llu")
-  set(CURL_FORMAT_OFF_T "%lld")
-  set(CURL_SUFFIX_CURL_OFF_T LL)
-  set(CURL_SUFFIX_CURL_OFF_TU ULL)
-endif(SIZEOF_LONG_LONG EQUAL 8)
-
-if(NOT CURL_TYPEOF_CURL_OFF_T)
-  set(CURL_TYPEOF_CURL_OFF_T ${ssize_t})
-  set(CURL_SIZEOF_CURL_OFF_T ${SIZEOF_SSIZE_T})
-  # TODO: need adjustment here.
-  set(CURL_FORMAT_CURL_OFF_T "ld")
-  set(CURL_FORMAT_CURL_OFF_TU "lu")
-  set(CURL_FORMAT_OFF_T "%ld")
-  set(CURL_SUFFIX_CURL_OFF_T L)
-  set(CURL_SUFFIX_CURL_OFF_TU LU)
-endif(NOT CURL_TYPEOF_CURL_OFF_T)
-
 if(HAVE_SIZEOF_LONG_LONG)
   set(HAVE_LONGLONG 1)
   set(HAVE_LL 1)
@@ -924,7 +881,18 @@ check_symbol_exists(ioctl          "${CURL_INCLUDES}" HAVE_IOCTL)
 check_symbol_exists(setsockopt     "${CURL_INCLUDES}" HAVE_SETSOCKOPT)
 
 # symbol exists in win32, but function does not.
-check_function_exists(inet_pton HAVE_INET_PTON)
+if(WIN32)
+  if(ENABLE_INET_PTON)
+    check_function_exists(inet_pton HAVE_INET_PTON)
+    # _WIN32_WINNT_VISTA (0x0600)
+    add_definitions(-D_WIN32_WINNT=0x0600)
+  else()
+    # _WIN32_WINNT_WINXP (0x0501)
+    add_definitions(-D_WIN32_WINNT=0x0501)
+  endif()
+else()
+    check_function_exists(inet_pton HAVE_INET_PTON)
+endif()
 
 check_symbol_exists(fsetxattr "${CURL_INCLUDES}" HAVE_FSETXATTR)
 if(HAVE_FSETXATTR)
@@ -996,6 +964,13 @@ if(HAVE_FILE_OFFSET_BITS)
   set(CMAKE_REQUIRED_FLAGS "-D_FILE_OFFSET_BITS=64")
 endif(HAVE_FILE_OFFSET_BITS)
 check_type_size("off_t"  SIZEOF_OFF_T)
+
+# include this header to get the type
+set(CMAKE_REQUIRED_INCLUDES "${CURL_SOURCE_DIR}/include")
+set(CMAKE_EXTRA_INCLUDE_FILES "curl/system.h")
+check_type_size("curl_off_t"  SIZEOF_CURL_OFF_T)
+set(CMAKE_EXTRA_INCLUDE_FILES "")
+
 set(CMAKE_REQUIRED_FLAGS)
 
 foreach(CURL_TEST
@@ -1111,7 +1086,7 @@ else()
   set(CURL_SIZEOF_CURL_SOCKLEN_T ${SIZEOF_INT})
 endif()
 
-# TODO test which of these headers are required for the typedefs used in curlbuild.h
+# TODO test which of these headers are required
 if(WIN32)
   set(CURL_PULL_WS2TCPIP_H ${HAVE_WS2TCPIP_H})
 else()
@@ -1126,11 +1101,6 @@ include(CMake/OtherTests.cmake)
 
 add_definitions(-DHAVE_CONFIG_H)
 
-# For windows, do not allow the compiler to use default target (Vista).
-if(WIN32)
-  add_definitions(-D_WIN32_WINNT=0x0501)
-endif(WIN32)
-
 # For windows, all compilers used by cmake should support large files
 if(WIN32)
   set(USE_WIN32_LARGE_FILES ON)
@@ -1138,6 +1108,11 @@ endif(WIN32)
 
 if(MSVC)
   add_definitions(-D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE)
+  if(CMAKE_C_FLAGS MATCHES "/W[0-4]")
+    string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+  else(CMAKE_C_FLAGS MATCHES "/W[0-4]")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
+  endif(CMAKE_C_FLAGS MATCHES "/W[0-4]")
 endif(MSVC)
 
 # Ugly (but functional) way to include "Makefile.inc" by transforming it (= regenerate it).
@@ -1156,8 +1131,12 @@ function(TRANSFORM_MAKEFILE_INC INPUT_FILE OUTPUT_FILE)
 
 endfunction()
 
-add_subdirectory(docs)
+if(USE_MANUAL)
+  add_subdirectory(docs)
+endif()
+
 add_subdirectory(lib)
+
 if(BUILD_CURL_EXE)
   add_subdirectory(src)
 endif()
@@ -1261,7 +1240,7 @@ set(LDFLAGS                 "${CMAKE_SHARED_LINKER_FLAGS}")
 set(LIBCURL_LIBS            "")
 set(libdir                  "${CMAKE_INSTALL_PREFIX}/lib")
 foreach(_lib ${CMAKE_C_IMPLICIT_LINK_LIBRARIES} ${CURL_LIBS})
-  if(_lib MATCHES ".*/.*")
+  if(_lib MATCHES ".*/.*" OR _lib MATCHES "^-")
     set(LIBCURL_LIBS          "${LIBCURL_LIBS} ${_lib}")
   else()
     set(LIBCURL_LIBS          "${LIBCURL_LIBS} -l${_lib}")
@@ -1297,16 +1276,10 @@ if(NOT CURL_CONFIG_HAS_BEEN_RUN_BEFORE)
   set(CURL_CONFIG_HAS_BEEN_RUN_BEFORE 1 CACHE INTERNAL "Flag to track whether this is the first time running CMake or if CMake has been configured before")
 endif()
 
-# Installation.
-# First, install generated curlbuild.h
-install(FILES "${CMAKE_CURRENT_BINARY_DIR}/include/curl/curlbuild.h"
-    DESTINATION include/curl )
-# Next, install other headers excluding curlbuild.h
+# install headers
 install(DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/curl"
     DESTINATION include
-    FILES_MATCHING PATTERN "*.h"
-    PATTERN "curlbuild.h" EXCLUDE)
-
+    FILES_MATCHING PATTERN "*.h")
 
 # Workaround for MSVS10 to avoid the Dialog Hell
 # FIXME: This could be removed with future version of CMake.
@@ -1316,3 +1289,14 @@ if(MSVC_VERSION EQUAL 1600)
     file(APPEND "${CURL_SLN_FILENAME}" "\n# This should be regenerated!\n")
   endif()
 endif()
+
+if(NOT TARGET uninstall)
+  configure_file(
+      ${CMAKE_CURRENT_SOURCE_DIR}/CMake/cmake_uninstall.cmake.in
+      ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake
+      IMMEDIATE @ONLY)
+
+  add_custom_target(uninstall
+      COMMAND ${CMAKE_COMMAND} -P
+      ${CMAKE_CURRENT_BINARY_DIR}/CMake/cmake_uninstall.cmake)
+endif()
diff --git a/include/curl/curl.h b/include/curl/curl.h
index ddba98c..7139a33 100644
--- a/include/curl/curl.h
+++ b/include/curl/curl.h
@@ -36,8 +36,6 @@
 
 #include "curlver.h"         /* libcurl version defines   */
 #include "system.h"          /* determine things run-time */
-#include "curlbuild.h"       /* libcurl build definitions */
-#include "curlrules.h"       /* libcurl rules enforcement */
 
 /*
  * Define WIN32 when build target is Win32 API
@@ -76,6 +74,7 @@
 #if defined(_AIX) || defined(__NOVELL_LIBC__) || defined(__NetBSD__) || \
     defined(__minix) || defined(__SYMBIAN32__) || defined(__INTEGRITY) || \
     defined(ANDROID) || defined(__ANDROID__) || defined(__OpenBSD__) || \
+    defined(__CYGWIN__) || \
    (defined(__FreeBSD_version) && (__FreeBSD_version < 800000))
 #include <sys/select.h>
 #endif
@@ -134,6 +133,27 @@ typedef int curl_socket_t;
 #define curl_socket_typedef
 #endif /* curl_socket_typedef */
 
+/* enum for the different supported SSL backends */
+typedef enum {
+  CURLSSLBACKEND_NONE = 0,
+  CURLSSLBACKEND_OPENSSL = 1,
+  CURLSSLBACKEND_GNUTLS = 2,
+  CURLSSLBACKEND_NSS = 3,
+  CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
+  CURLSSLBACKEND_GSKIT = 5,
+  CURLSSLBACKEND_POLARSSL = 6,
+  CURLSSLBACKEND_WOLFSSL = 7,
+  CURLSSLBACKEND_SCHANNEL = 8,
+  CURLSSLBACKEND_DARWINSSL = 9,
+  CURLSSLBACKEND_AXTLS = 10,
+  CURLSSLBACKEND_MBEDTLS = 11
+} curl_sslbackend;
+
+/* aliases for library clones and renames */
+#define CURLSSLBACKEND_LIBRESSL CURLSSLBACKEND_OPENSSL
+#define CURLSSLBACKEND_BORINGSSL CURLSSLBACKEND_OPENSSL
+#define CURLSSLBACKEND_CYASSL CURLSSLBACKEND_WOLFSSL
+
 struct curl_httppost {
   struct curl_httppost *next;       /* next entry in the list */
   char *name;                       /* pointer to allocated name */
@@ -337,7 +357,7 @@ typedef size_t (*curl_read_callback)(char *buffer,
                                       size_t nitems,
                                       void *instream);
 
-typedef enum  {
+typedef enum {
   CURLSOCKTYPE_IPCXN,  /* socket created for a specific IP connection */
   CURLSOCKTYPE_ACCEPT, /* socket created by accept() call */
   CURLSOCKTYPE_LAST    /* never use */
@@ -379,7 +399,7 @@ typedef enum {
   CURLIOE_LAST           /* never use */
 } curlioerr;
 
-typedef enum  {
+typedef enum {
   CURLIOCMD_NOP,         /* no operation */
   CURLIOCMD_RESTARTREAD, /* restart the read stream from start */
   CURLIOCMD_LAST         /* never use */
@@ -679,6 +699,8 @@ typedef enum {
 #define CURLAUTH_NEGOTIATE    (((unsigned long)1)<<2)
 /* Deprecated since the advent of CURLAUTH_NEGOTIATE */
 #define CURLAUTH_GSSNEGOTIATE CURLAUTH_NEGOTIATE
+/* Used for CURLOPT_SOCKS5_AUTH to stay terminologically correct */
+#define CURLAUTH_GSSAPI CURLAUTH_NEGOTIATE
 #define CURLAUTH_NTLM         (((unsigned long)1)<<3)
 #define CURLAUTH_DIGEST_IE    (((unsigned long)1)<<4)
 #define CURLAUTH_NTLM_WB      (((unsigned long)1)<<5)
@@ -1782,6 +1804,18 @@ typedef enum {
   /* Suppress proxy CONNECT response headers from user callbacks */
   CINIT(SUPPRESS_CONNECT_HEADERS, LONG, 265),
 
+  /* The request target, instead of extracted from the URL */
+  CINIT(REQUEST_TARGET, STRINGPOINT, 266),
+
+  /* bitmask of allowed auth methods for connections to SOCKS5 proxies */
+  CINIT(SOCKS5_AUTH, LONG, 267),
+
+  /* Enable/disable SSH compression */
+  CINIT(SSH_COMPRESSION, LONG, 268),
+
+  /* Post MIME data. */
+  CINIT(MIMEPOST, OBJECTPOINT, 269),
+
   CURLOPT_LASTENTRY /* the last unused */
 } CURLoption;
 
@@ -1928,15 +1962,140 @@ typedef enum {
   CURL_TIMECOND_LAST
 } curl_TimeCond;
 
+/* Special size_t value signaling a zero-terminated string. */
+#define CURL_ZERO_TERMINATED ((size_t) -1)
 
 /* curl_strequal() and curl_strnequal() are subject for removal in a future
-   libcurl, see lib/README.curlx for details
+   release */
+CURL_EXTERN int curl_strequal(const char *s1, const char *s2);
+CURL_EXTERN int curl_strnequal(const char *s1, const char *s2, size_t n);
+
+/* Mime/form handling support. */
+typedef struct curl_mime_s      curl_mime;      /* Mime context. */
+typedef struct curl_mimepart_s  curl_mimepart;  /* Mime part context. */
+
+/*
+ * NAME curl_mime_init()
+ *
+ * DESCRIPTION
+ *
+ * Create a mime context and return its handle. The easy parameter is the
+ * target handle.
+ */
+CURL_EXTERN curl_mime *curl_mime_init(CURL *easy);
+
+/*
+ * NAME curl_mime_free()
+ *
+ * DESCRIPTION
+ *
+ * release a mime handle and its substructures.
+ */
+CURL_EXTERN void curl_mime_free(curl_mime *mime);
+
+/*
+ * NAME curl_mime_addpart()
+ *
+ * DESCRIPTION
+ *
+ * Append a new empty part to the given mime context and return a handle to
+ * the created part.
+ */
+CURL_EXTERN curl_mimepart *curl_mime_addpart(curl_mime *mime);
+
+/*
+ * NAME curl_mime_name()
+ *
+ * DESCRIPTION
+ *
+ * Set mime/form part name.
+ */
+CURL_EXTERN CURLcode curl_mime_name(curl_mimepart *part, const char *name);
+
+/*
+ * NAME curl_mime_filename()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part remote file name.
+ */
+CURL_EXTERN CURLcode curl_mime_filename(curl_mimepart *part,
+                                        const char *filename);
+
+/*
+ * NAME curl_mime_type()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part type.
+ */
+CURL_EXTERN CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype);
+
+/*
+ * NAME curl_mime_encoder()
+ *
+ * DESCRIPTION
+ *
+ * Set mime data transfer encoder.
+ */
+CURL_EXTERN CURLcode curl_mime_encoder(curl_mimepart *part,
+                                       const char *encoding);
+
+/*
+ * NAME curl_mime_data()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part data source from memory data,
+ */
+CURL_EXTERN CURLcode curl_mime_data(curl_mimepart *part,
+                                    const char *data, size_t datasize);
+
+/*
+ * NAME curl_mime_filedata()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part data source from named file.
+ */
+CURL_EXTERN CURLcode curl_mime_filedata(curl_mimepart *part,
+                                        const char *filename);
+
+/*
+ * NAME curl_mime_data_cb()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part data source from callback function.
+ */
+CURL_EXTERN CURLcode curl_mime_data_cb(curl_mimepart *part,
+                                       curl_off_t datasize,
+                                       curl_read_callback readfunc,
+                                       curl_seek_callback seekfunc,
+                                       curl_free_callback freefunc,
+                                       void *arg);
 
-   !checksrc! disable SPACEBEFOREPAREN 2
-*/
-CURL_EXTERN int (curl_strequal)(const char *s1, const char *s2);
-CURL_EXTERN int (curl_strnequal)(const char *s1, const char *s2, size_t n);
+/*
+ * NAME curl_mime_subparts()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part data source from subparts.
+ */
+CURL_EXTERN CURLcode curl_mime_subparts(curl_mimepart *part,
+                                        curl_mime *subparts);
+/*
+ * NAME curl_mime_headers()
+ *
+ * DESCRIPTION
+ *
+ * Set mime part headers.
+ */
+CURL_EXTERN CURLcode curl_mime_headers(curl_mimepart *part,
+                                       struct curl_slist *headers,
+                                       int take_ownership);
 
+/* Old form API. */
 /* name is uppercase CURLFORM_<name> */
 #ifdef CFINIT
 #undef CFINIT
@@ -2179,6 +2338,47 @@ struct curl_slist {
 };
 
 /*
+ * NAME curl_global_sslset()
+ *
+ * DESCRIPTION
+ *
+ * When built with multiple SSL backends, curl_global_sslset() allows to
+ * choose one. This function can only be called once, and it must be called
+ * *before* curl_global_init().
+ *
+ * The backend can be identified by the id (e.g. CURLSSLBACKEND_OPENSSL). The
+ * backend can also be specified via the name parameter (passing -1 as id).
+ * If both id and name are specified, the name will be ignored. If neither id
+ * nor name are specified, the function will fail with
+ * CURLSSLSET_UNKNOWN_BACKEND and set the "avail" pointer to the
+ * NULL-terminated list of available backends.
+ *
+ * Upon success, the function returns CURLSSLSET_OK.
+ *
+ * If the specified SSL backend is not available, the function returns
+ * CURLSSLSET_UNKNOWN_BACKEND and sets the "avail" pointer to a NULL-terminated
+ * list of available SSL backends.
+ *
+ * The SSL backend can be set only once. If it has already been set, a
+ * subsequent attempt to change it will result in a CURLSSLSET_TOO_LATE.
+ */
+
+typedef struct {
+  curl_sslbackend id;
+  const char *name;
+} curl_ssl_backend;
+
+typedef enum {
+  CURLSSLSET_OK = 0,
+  CURLSSLSET_UNKNOWN_BACKEND,
+  CURLSSLSET_TOO_LATE,
+  CURLSSLSET_NO_BACKENDS /* libcurl was built without any SSL support */
+} CURLsslset;
+
+CURL_EXTERN CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
+                                          const curl_ssl_backend ***avail);
+
+/*
  * NAME curl_slist_append()
  *
  * DESCRIPTION
@@ -2218,27 +2418,6 @@ struct curl_certinfo {
                                    format "name: value" */
 };
 
-/* enum for the different supported SSL backends */
-typedef enum {
-  CURLSSLBACKEND_NONE = 0,
-  CURLSSLBACKEND_OPENSSL = 1,
-  CURLSSLBACKEND_GNUTLS = 2,
-  CURLSSLBACKEND_NSS = 3,
-  CURLSSLBACKEND_OBSOLETE4 = 4,  /* Was QSOSSL. */
-  CURLSSLBACKEND_GSKIT = 5,
-  CURLSSLBACKEND_POLARSSL = 6,
-  CURLSSLBACKEND_CYASSL = 7,
-  CURLSSLBACKEND_SCHANNEL = 8,
-  CURLSSLBACKEND_DARWINSSL = 9,
-  CURLSSLBACKEND_AXTLS = 10,
-  CURLSSLBACKEND_MBEDTLS = 11
-} curl_sslbackend;
-
-/* aliases for library clones and renames */
-#define CURLSSLBACKEND_LIBRESSL 1
-#define CURLSSLBACKEND_BORINGSSL 1
-#define CURLSSLBACKEND_WOLFSSL 6
-
 /* Information about the SSL library used and the respective internal SSL
    handle, which can be used to obtain further information regarding the
    connection. Asked for with CURLINFO_TLS_SSL_PTR or CURLINFO_TLS_SESSION. */
@@ -2253,6 +2432,7 @@ struct curl_tlssessioninfo {
 #define CURLINFO_SLIST    0x400000
 #define CURLINFO_PTR      0x400000 /* same as SLIST */
 #define CURLINFO_SOCKET   0x500000
+#define CURLINFO_OFF_T    0x600000
 #define CURLINFO_MASK     0x0fffff
 #define CURLINFO_TYPEMASK 0xf00000
 
@@ -2265,15 +2445,21 @@ typedef enum {
   CURLINFO_CONNECT_TIME     = CURLINFO_DOUBLE + 5,
   CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
   CURLINFO_SIZE_UPLOAD      = CURLINFO_DOUBLE + 7,
+  CURLINFO_SIZE_UPLOAD_T    = CURLINFO_OFF_T  + 7,
   CURLINFO_SIZE_DOWNLOAD    = CURLINFO_DOUBLE + 8,
+  CURLINFO_SIZE_DOWNLOAD_T  = CURLINFO_OFF_T  + 8,
   CURLINFO_SPEED_DOWNLOAD   = CURLINFO_DOUBLE + 9,
+  CURLINFO_SPEED_DOWNLOAD_T = CURLINFO_OFF_T  + 9,
   CURLINFO_SPEED_UPLOAD     = CURLINFO_DOUBLE + 10,
+  CURLINFO_SPEED_UPLOAD_T   = CURLINFO_OFF_T  + 10,
   CURLINFO_HEADER_SIZE      = CURLINFO_LONG   + 11,
   CURLINFO_REQUEST_SIZE     = CURLINFO_LONG   + 12,
   CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG   + 13,
   CURLINFO_FILETIME         = CURLINFO_LONG   + 14,
   CURLINFO_CONTENT_LENGTH_DOWNLOAD   = CURLINFO_DOUBLE + 15,
+  CURLINFO_CONTENT_LENGTH_DOWNLOAD_T = CURLINFO_OFF_T  + 15,
   CURLINFO_CONTENT_LENGTH_UPLOAD     = CURLINFO_DOUBLE + 16,
+  CURLINFO_CONTENT_LENGTH_UPLOAD_T   = CURLINFO_OFF_T  + 16,
   CURLINFO_STARTTRANSFER_TIME = CURLINFO_DOUBLE + 17,
   CURLINFO_CONTENT_TYPE     = CURLINFO_STRING + 18,
   CURLINFO_REDIRECT_TIME    = CURLINFO_DOUBLE + 19,
@@ -2471,6 +2657,7 @@ typedef struct {
 #define CURL_VERSION_PSL          (1<<20) /* Mozilla's Public Suffix List, used
                                              for cookie domain verification */
 #define CURL_VERSION_HTTPS_PROXY  (1<<21) /* HTTPS-proxy support built-in */
+#define CURL_VERSION_MULTI_SSL    (1<<22) /* Multiple SSL backends available */
 
  /*
  * NAME curl_version_info()
diff --git a/include/curl/curlbuild.h.cmake b/include/curl/curlbuild.h.cmake
deleted file mode 100644
index bbb31a9..0000000
--- a/include/curl/curlbuild.h.cmake
+++ /dev/null
@@ -1,197 +0,0 @@
-#ifndef __CURL_CURLBUILD_H
-#define __CURL_CURLBUILD_H
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel at haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/* ================================================================ */
-/*               NOTES FOR CONFIGURE CAPABLE SYSTEMS                */
-/* ================================================================ */
-
-/*
- * NOTE 1:
- * -------
- *
- * Nothing in this file is intended to be modified or adjusted by the
- * curl library user nor by the curl library builder.
- *
- * If you think that something actually needs to be changed, adjusted
- * or fixed in this file, then, report it on the libcurl development
- * mailing list: https://cool.haxx.se/mailman/listinfo/curl-library/
- *
- * This header file shall only export symbols which are 'curl' or 'CURL'
- * prefixed, otherwise public name space would be polluted.
- *
- * NOTE 2:
- * -------
- *
- * Right now you might be staring at file include/curl/curlbuild.h.in or
- * at file include/curl/curlbuild.h, this is due to the following reason:
- *
- * On systems capable of running the configure script, the configure process
- * will overwrite the distributed include/curl/curlbuild.h file with one that
- * is suitable and specific to the library being configured and built, which
- * is generated from the include/curl/curlbuild.h.in template file.
- *
- */
-
-/* ================================================================ */
-/*  DEFINITION OF THESE SYMBOLS SHALL NOT TAKE PLACE ANYWHERE ELSE  */
-/* ================================================================ */
-
-#ifdef CURL_SIZEOF_LONG
-#error "CURL_SIZEOF_LONG shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_SIZEOF_LONG_already_defined
-#endif
-
-#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
-#error "CURL_TYPEOF_CURL_SOCKLEN_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_TYPEOF_CURL_SOCKLEN_T_already_defined
-#endif
-
-#ifdef CURL_SIZEOF_CURL_SOCKLEN_T
-#error "CURL_SIZEOF_CURL_SOCKLEN_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_SIZEOF_CURL_SOCKLEN_T_already_defined
-#endif
-
-#ifdef CURL_TYPEOF_CURL_OFF_T
-#error "CURL_TYPEOF_CURL_OFF_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_TYPEOF_CURL_OFF_T_already_defined
-#endif
-
-#ifdef CURL_FORMAT_CURL_OFF_T
-#error "CURL_FORMAT_CURL_OFF_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_FORMAT_CURL_OFF_T_already_defined
-#endif
-
-#ifdef CURL_FORMAT_CURL_OFF_TU
-#error "CURL_FORMAT_CURL_OFF_TU shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_FORMAT_CURL_OFF_TU_already_defined
-#endif
-
-#ifdef CURL_FORMAT_OFF_T
-#error "CURL_FORMAT_OFF_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_FORMAT_OFF_T_already_defined
-#endif
-
-#ifdef CURL_SIZEOF_CURL_OFF_T
-#error "CURL_SIZEOF_CURL_OFF_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_SIZEOF_CURL_OFF_T_already_defined
-#endif
-
-#ifdef CURL_SUFFIX_CURL_OFF_T
-#error "CURL_SUFFIX_CURL_OFF_T shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_T_already_defined
-#endif
-
-#ifdef CURL_SUFFIX_CURL_OFF_TU
-#error "CURL_SUFFIX_CURL_OFF_TU shall not be defined except in curlbuild.h"
-   Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_TU_already_defined
-#endif
-
-/* ================================================================ */
-/*  EXTERNAL INTERFACE SETTINGS FOR CONFIGURE CAPABLE SYSTEMS ONLY  */
-/* ================================================================ */
-
-/* Configure process defines this to 1 when it finds out that system  */
-/* header file ws2tcpip.h must be included by the external interface. */
-#cmakedefine CURL_PULL_WS2TCPIP_H
-#ifdef CURL_PULL_WS2TCPIP_H
-#  ifndef WIN32_LEAN_AND_MEAN
-#    define WIN32_LEAN_AND_MEAN
-#  endif
-#  include <windows.h>
-#  include <winsock2.h>
-#  include <ws2tcpip.h>
-#endif
-
-/* Configure process defines this to 1 when it finds out that system   */
-/* header file sys/types.h must be included by the external interface. */
-#cmakedefine CURL_PULL_SYS_TYPES_H
-#ifdef CURL_PULL_SYS_TYPES_H
-#  include <sys/types.h>
-#endif
-
-/* Configure process defines this to 1 when it finds out that system */
-/* header file stdint.h must be included by the external interface.  */
-#cmakedefine CURL_PULL_STDINT_H
-#ifdef CURL_PULL_STDINT_H
-#  include <stdint.h>
-#endif
-
-/* Configure process defines this to 1 when it finds out that system  */
-/* header file inttypes.h must be included by the external interface. */
-#cmakedefine CURL_PULL_INTTYPES_H
-#ifdef CURL_PULL_INTTYPES_H
-#  include <inttypes.h>
-#endif
-
-/* Configure process defines this to 1 when it finds out that system    */
-/* header file sys/socket.h must be included by the external interface. */
-#cmakedefine CURL_PULL_SYS_SOCKET_H
-#ifdef CURL_PULL_SYS_SOCKET_H
-#  include <sys/socket.h>
-#endif
-
-/* Configure process defines this to 1 when it finds out that system  */
-/* header file sys/poll.h must be included by the external interface. */
-#cmakedefine CURL_PULL_SYS_POLL_H
-#ifdef CURL_PULL_SYS_POLL_H
-#  include <sys/poll.h>
-#endif
-
-/* The size of `long', as computed by sizeof. */
-#define CURL_SIZEOF_LONG ${CURL_SIZEOF_LONG}
-
-/* Integral data type used for curl_socklen_t. */
-#define CURL_TYPEOF_CURL_SOCKLEN_T ${CURL_TYPEOF_CURL_SOCKLEN_T}
-
-/* The size of `curl_socklen_t', as computed by sizeof. */
-#define CURL_SIZEOF_CURL_SOCKLEN_T ${CURL_SIZEOF_CURL_SOCKLEN_T}
-
-/* Data type definition of curl_socklen_t. */
-typedef CURL_TYPEOF_CURL_SOCKLEN_T curl_socklen_t;
-
-/* Signed integral data type used for curl_off_t. */
-#define CURL_TYPEOF_CURL_OFF_T ${CURL_TYPEOF_CURL_OFF_T}
-
-/* Data type definition of curl_off_t. */
-typedef CURL_TYPEOF_CURL_OFF_T curl_off_t;
-
-/* curl_off_t formatting string directive without "%" conversion specifier. */
-#define CURL_FORMAT_CURL_OFF_T "${CURL_FORMAT_CURL_OFF_T}"
-
-/* unsigned curl_off_t formatting string without "%" conversion specifier. */
-#define CURL_FORMAT_CURL_OFF_TU "${CURL_FORMAT_CURL_OFF_TU}"
-
-/* curl_off_t formatting string directive with "%" conversion specifier. */
-#define CURL_FORMAT_OFF_T "${CURL_FORMAT_OFF_T}"
-
-/* The size of `curl_off_t', as computed by sizeof. */
-#define CURL_SIZEOF_CURL_OFF_T ${CURL_SIZEOF_CURL_OFF_T}
-
-/* curl_off_t constant suffix. */
-#define CURL_SUFFIX_CURL_OFF_T ${CURL_SUFFIX_CURL_OFF_T}
-
-/* unsigned curl_off_t constant suffix. */
-#define CURL_SUFFIX_CURL_OFF_TU ${CURL_SUFFIX_CURL_OFF_TU}
-
-#endif /* __CURL_CURLBUILD_H */
diff --git a/include/curl/curlrules.h b/include/curl/curlrules.h
deleted file mode 100644
index 0abd9f7..0000000
--- a/include/curl/curlrules.h
+++ /dev/null
@@ -1,239 +0,0 @@
-#ifndef __CURL_CURLRULES_H
-#define __CURL_CURLRULES_H
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-/* ================================================================ */
-/*                    COMPILE TIME SANITY CHECKS                    */
-/* ================================================================ */
-
-/*
- * NOTE 1:
- * -------
- *
- * All checks done in this file are intentionally placed in a public
- * header file which is pulled by curl/curl.h when an application is
- * being built using an already built libcurl library. Additionally
- * this file is also included and used when building the library.
- *
- * If compilation fails on this file it is certainly sure that the
- * problem is elsewhere. It could be a problem in the curlbuild.h
- * header file, or simply that you are using different compilation
- * settings than those used to build the library.
- *
- * Nothing in this file is intended to be modified or adjusted by the
- * curl library user nor by the curl library builder.
- *
- * Do not deactivate any check, these are done to make sure that the
- * library is properly built and used.
- *
- * You can find further help on the libcurl development mailing list:
- * https://cool.haxx.se/mailman/listinfo/curl-library/
- *
- * NOTE 2
- * ------
- *
- * Some of the following compile time checks are based on the fact
- * that the dimension of a constant array can not be a negative one.
- * In this way if the compile time verification fails, the compilation
- * will fail issuing an error. The error description wording is compiler
- * dependent but it will be quite similar to one of the following:
- *
- *   "negative subscript or subscript is too large"
- *   "array must have at least one element"
- *   "-1 is an illegal array size"
- *   "size of array is negative"
- *
- * If you are building an application which tries to use an already
- * built libcurl library and you are getting this kind of errors on
- * this file, it is a clear indication that there is a mismatch between
- * how the library was built and how you are trying to use it for your
- * application. Your already compiled or binary library provider is the
- * only one who can give you the details you need to properly use it.
- */
-
-/*
- * Verify that some macros are actually defined.
- */
-
-#ifndef CURL_SIZEOF_LONG
-#  error "CURL_SIZEOF_LONG definition is missing!"
-   Error Compilation_aborted_CURL_SIZEOF_LONG_is_missing
-#endif
-
-#ifndef CURL_TYPEOF_CURL_SOCKLEN_T
-#  error "CURL_TYPEOF_CURL_SOCKLEN_T definition is missing!"
-   Error Compilation_aborted_CURL_TYPEOF_CURL_SOCKLEN_T_is_missing
-#endif
-
-#ifndef CURL_SIZEOF_CURL_SOCKLEN_T
-#  error "CURL_SIZEOF_CURL_SOCKLEN_T definition is missing!"
-   Error Compilation_aborted_CURL_SIZEOF_CURL_SOCKLEN_T_is_missing
-#endif
-
-#ifndef CURL_TYPEOF_CURL_OFF_T
-#  error "CURL_TYPEOF_CURL_OFF_T definition is missing!"
-   Error Compilation_aborted_CURL_TYPEOF_CURL_OFF_T_is_missing
-#endif
-
-#ifndef CURL_FORMAT_CURL_OFF_T
-#  error "CURL_FORMAT_CURL_OFF_T definition is missing!"
-   Error Compilation_aborted_CURL_FORMAT_CURL_OFF_T_is_missing
-#endif
-
-#ifndef CURL_FORMAT_CURL_OFF_TU
-#  error "CURL_FORMAT_CURL_OFF_TU definition is missing!"
-   Error Compilation_aborted_CURL_FORMAT_CURL_OFF_TU_is_missing
-#endif
-
-#ifndef CURL_SIZEOF_CURL_OFF_T
-#  error "CURL_SIZEOF_CURL_OFF_T definition is missing!"
-   Error Compilation_aborted_CURL_SIZEOF_CURL_OFF_T_is_missing
-#endif
-
-#ifndef CURL_SUFFIX_CURL_OFF_T
-#  error "CURL_SUFFIX_CURL_OFF_T definition is missing!"
-   Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_T_is_missing
-#endif
-
-#ifndef CURL_SUFFIX_CURL_OFF_TU
-#  error "CURL_SUFFIX_CURL_OFF_TU definition is missing!"
-   Error Compilation_aborted_CURL_SUFFIX_CURL_OFF_TU_is_missing
-#endif
-
-/*
- * Macros private to this header file.
- */
-
-#define CurlchkszEQ(t, s) sizeof(t) == s ? 1 : -1
-
-#define CurlchkszGE(t1, t2) sizeof(t1) >= sizeof(t2) ? 1 : -1
-
-/*
- * Verify that the size previously defined and expected for long
- * is the same as the one reported by sizeof() at compile time.
- */
-
-typedef char
-  __curl_rule_01__
-    [CurlchkszEQ(long, CURL_SIZEOF_LONG)];
-
-/*
- * Verify that the size previously defined and expected for
- * curl_off_t is actually the the same as the one reported
- * by sizeof() at compile time.
- */
-
-typedef char
-  __curl_rule_02__
-    [CurlchkszEQ(curl_off_t, CURL_SIZEOF_CURL_OFF_T)];
-
-/*
- * Verify at compile time that the size of curl_off_t as reported
- * by sizeof() is greater or equal than the one reported for long
- * for the current compilation.
- */
-
-typedef char
-  __curl_rule_03__
-    [CurlchkszGE(curl_off_t, long)];
-
-/*
- * Verify that the size previously defined and expected for
- * curl_socklen_t is actually the the same as the one reported
- * by sizeof() at compile time.
- */
-
-typedef char
-  __curl_rule_04__
-    [CurlchkszEQ(curl_socklen_t, CURL_SIZEOF_CURL_SOCKLEN_T)];
-
-/*
- * Verify at compile time that the size of curl_socklen_t as reported
- * by sizeof() is greater or equal than the one reported for int for
- * the current compilation.
- */
-
-typedef char
-  __curl_rule_05__
-    [CurlchkszGE(curl_socklen_t, int)];
-
-/* ================================================================ */
-/*          EXTERNALLY AND INTERNALLY VISIBLE DEFINITIONS           */
-/* ================================================================ */
-
-/*
- * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow
- * these to be visible and exported by the external libcurl interface API,
- * while also making them visible to the library internals, simply including
- * curl_setup.h, without actually needing to include curl.h internally.
- * If some day this section would grow big enough, all this should be moved
- * to its own header file.
- */
-
-/*
- * Figure out if we can use the ## preprocessor operator, which is supported
- * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__
- * or  __cplusplus so we need to carefully check for them too.
- */
-
-#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \
-  defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \
-  defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \
-  defined(__ILEC400__)
-  /* This compiler is believed to have an ISO compatible preprocessor */
-#define CURL_ISOCPP
-#else
-  /* This compiler is believed NOT to have an ISO compatible preprocessor */
-#undef CURL_ISOCPP
-#endif
-
-/*
- * Macros for minimum-width signed and unsigned curl_off_t integer constants.
- */
-
-#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551)
-#  define __CURL_OFF_T_C_HLPR2(x) x
-#  define __CURL_OFF_T_C_HLPR1(x) __CURL_OFF_T_C_HLPR2(x)
-#  define CURL_OFF_T_C(Val)  __CURL_OFF_T_C_HLPR1(Val) ## \
-                             __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T)
-#  define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \
-                             __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU)
-#else
-#  ifdef CURL_ISOCPP
-#    define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix
-#  else
-#    define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix
-#  endif
-#  define __CURL_OFF_T_C_HLPR1(Val,Suffix) __CURL_OFF_T_C_HLPR2(Val,Suffix)
-#  define CURL_OFF_T_C(Val)  __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T)
-#  define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU)
-#endif
-
-/*
- * Get rid of macros private to this header file.
- */
-
-#undef CurlchkszEQ
-#undef CurlchkszGE
-
-#endif /* __CURL_CURLRULES_H */
diff --git a/include/curl/curlver.h b/include/curl/curlver.h
index 227571c..8c9fb5e 100644
--- a/include/curl/curlver.h
+++ b/include/curl/curlver.h
@@ -30,13 +30,13 @@
 
 /* This is the version number of the libcurl package from which this header
    file origins: */
-#define LIBCURL_VERSION "7.54.1-DEV"
+#define LIBCURL_VERSION "7.56.0-DEV"
 
 /* The numeric version number is also available "in parts" by using these
    defines: */
 #define LIBCURL_VERSION_MAJOR 7
-#define LIBCURL_VERSION_MINOR 54
-#define LIBCURL_VERSION_PATCH 1
+#define LIBCURL_VERSION_MINOR 56
+#define LIBCURL_VERSION_PATCH 0
 
 /* This is the numeric version of the libcurl version number, meant for easier
    parsing and comparions by programs. The LIBCURL_VERSION_NUM define will
@@ -57,7 +57,7 @@
    CURL_VERSION_BITS() macro since curl's own configure script greps for it
    and needs it to contain the full number.
 */
-#define LIBCURL_VERSION_NUM 0x073601
+#define LIBCURL_VERSION_NUM 0x073800
 
 /*
  * This is the date and time when the full source package was created. The
diff --git a/include/curl/multi.h b/include/curl/multi.h
index f93e511..911c91d 100644
--- a/include/curl/multi.h
+++ b/include/curl/multi.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
diff --git a/include/curl/system.h b/include/curl/system.h
index ed3a55c..39dae75 100644
--- a/include/curl/system.h
+++ b/include/curl/system.h
@@ -23,14 +23,6 @@
  ***************************************************************************/
 
 /*
- * This header is supposed to eventually replace curlbuild.h. This little one
- * is still learning.  During the experimental phase, this header files
- * defines symbols using the prefixes CURLSYS_ or curlsys_. When we feel
- * confident enough, we replace curlbuild.h with this file and rename all
- * prefixes to CURL_ and curl_.
- */
-
-/*
  * Try to keep one section per platform, compiler and architecture, otherwise,
  * if an existing section is reused for a different one and later on the
  * original is adjusted, probably the piggybacking one can be adversely
@@ -60,323 +52,271 @@
 
 #if defined(__DJGPP__) || defined(__GO32__)
 #  if defined(__DJGPP__) && (__DJGPP__ > 1)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__SALFORDC__)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     4
-#  define CURLSYS_SUFFIX_CURL_OFF_T     L
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    UL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__BORLANDC__)
 #  if (__BORLANDC__ < 0x520)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#    define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     i64
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ui64
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__TURBOC__)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     4
-#  define CURLSYS_SUFFIX_CURL_OFF_T     L
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    UL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__WATCOMC__)
 #  if defined(__386__)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#    define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     i64
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ui64
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__POCC__)
 #  if (__POCC__ < 280)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  elif defined(_MSC_VER)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#    define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     i64
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ui64
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__LCC__)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     4
-#  define CURLSYS_SUFFIX_CURL_OFF_T     L
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    UL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__SYMBIAN32__)
 #  if defined(__EABI__)  /* Treat all ARM compilers equally */
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  elif defined(__CW32__)
 #    pragma longlong on
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  elif defined(__VC32__)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T unsigned int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
 
 #elif defined(__MWERKS__)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     8
-#  define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(_WIN32_WCE)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#  define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     8
-#  define CURLSYS_SUFFIX_CURL_OFF_T     i64
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    ui64
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     __int64
+#  define CURL_FORMAT_CURL_OFF_T     "I64d"
+#  define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#  define CURL_SUFFIX_CURL_OFF_T     i64
+#  define CURL_SUFFIX_CURL_OFF_TU    ui64
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__MINGW32__)
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     8
-#  define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-#  define CURLSYS_PULL_SYS_TYPES_H      1
-#  define CURLSYS_PULL_WS2TCPIP_H       1
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "I64d"
+#  define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_WS2TCPIP_H       1
 
 #elif defined(__VMS)
 #  if defined(__VAX)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T unsigned int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T unsigned int
 
 #elif defined(__OS400__)
 #  if defined(__ILEC400__)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
-#    define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#    define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-#    define CURLSYS_PULL_SYS_TYPES_H      1
-#    define CURLSYS_PULL_SYS_SOCKET_H     1
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(__MVS__)
 #  if defined(__IBMC__) || defined(__IBMCPP__)
 #    if defined(_ILP32)
-#      define CURLSYS_SIZEOF_LONG           4
 #    elif defined(_LP64)
-#      define CURLSYS_SIZEOF_LONG           8
 #    endif
 #    if defined(_LONG_LONG)
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     8
-#      define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#      define CURL_TYPEOF_CURL_OFF_T     long long
+#      define CURL_FORMAT_CURL_OFF_T     "lld"
+#      define CURL_FORMAT_CURL_OFF_TU    "llu"
+#      define CURL_SUFFIX_CURL_OFF_T     LL
+#      define CURL_SUFFIX_CURL_OFF_TU    ULL
 #    elif defined(_LP64)
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     8
-#      define CURLSYS_SUFFIX_CURL_OFF_T     L
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
 #    else
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     4
-#      define CURLSYS_SUFFIX_CURL_OFF_T     L
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
 #    endif
-#    define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#    define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-#    define CURLSYS_PULL_SYS_TYPES_H      1
-#    define CURLSYS_PULL_SYS_SOCKET_H     1
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(__370__)
 #  if defined(__IBMC__) || defined(__IBMCPP__)
 #    if defined(_ILP32)
-#      define CURLSYS_SIZEOF_LONG           4
 #    elif defined(_LP64)
-#      define CURLSYS_SIZEOF_LONG           8
 #    endif
 #    if defined(_LONG_LONG)
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     8
-#      define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#      define CURL_TYPEOF_CURL_OFF_T     long long
+#      define CURL_FORMAT_CURL_OFF_T     "lld"
+#      define CURL_FORMAT_CURL_OFF_TU    "llu"
+#      define CURL_SUFFIX_CURL_OFF_T     LL
+#      define CURL_SUFFIX_CURL_OFF_TU    ULL
 #    elif defined(_LP64)
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     8
-#      define CURLSYS_SUFFIX_CURL_OFF_T     L
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
 #    else
-#      define CURLSYS_TYPEOF_CURL_OFF_T     long
-#      define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#      define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#      define CURLSYS_SIZEOF_CURL_OFF_T     4
-#      define CURLSYS_SUFFIX_CURL_OFF_T     L
-#      define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#      define CURL_TYPEOF_CURL_OFF_T     long
+#      define CURL_FORMAT_CURL_OFF_T     "ld"
+#      define CURL_FORMAT_CURL_OFF_TU    "lu"
+#      define CURL_SUFFIX_CURL_OFF_T     L
+#      define CURL_SUFFIX_CURL_OFF_TU    UL
 #    endif
-#    define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#    define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-#    define CURLSYS_PULL_SYS_TYPES_H      1
-#    define CURLSYS_PULL_SYS_SOCKET_H     1
+#    define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#    define CURL_PULL_SYS_TYPES_H      1
+#    define CURL_PULL_SYS_SOCKET_H     1
 #  endif
 
 #elif defined(TPF)
-#  define CURLSYS_SIZEOF_LONG           8
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     8
-#  define CURLSYS_SUFFIX_CURL_OFF_T     L
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    UL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_OFF_T     long
+#  define CURL_FORMAT_CURL_OFF_T     "ld"
+#  define CURL_FORMAT_CURL_OFF_TU    "lu"
+#  define CURL_SUFFIX_CURL_OFF_T     L
+#  define CURL_SUFFIX_CURL_OFF_TU    UL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 #elif defined(__TINYC__) /* also known as tcc */
 
-#  define CURLSYS_SIZEOF_LONG           4
-#  define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#  define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#  define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#  define CURLSYS_SIZEOF_CURL_OFF_T     8
-#  define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#  define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#  define CURLSYS_PULL_SYS_TYPES_H      1
-#  define CURLSYS_PULL_SYS_SOCKET_H     1
+#  define CURL_TYPEOF_CURL_OFF_T     long long
+#  define CURL_FORMAT_CURL_OFF_T     "lld"
+#  define CURL_FORMAT_CURL_OFF_TU    "llu"
+#  define CURL_SUFFIX_CURL_OFF_T     LL
+#  define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
+
+#elif defined(__SUNPRO_C) /* Oracle Solaris Studio */
+#  if !defined(__LP64) && (defined(__ILP32) ||                          \
+                           defined(__i386) || defined(__sparcv8))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
+#  elif defined(__LP64) || \
+        defined(__amd64) || defined(__sparcv9)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
+#  endif
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
 
 /* ===================================== */
 /*    KEEP MSVC THE PENULTIMATE ENTRY    */
@@ -384,101 +324,148 @@
 
 #elif defined(_MSC_VER)
 #  if (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     __int64
-#    define CURLSYS_FORMAT_CURL_OFF_T     "I64d"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "I64u"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     i64
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ui64
+#    define CURL_TYPEOF_CURL_OFF_T     __int64
+#    define CURL_FORMAT_CURL_OFF_T     "I64d"
+#    define CURL_FORMAT_CURL_OFF_TU    "I64u"
+#    define CURL_SUFFIX_CURL_OFF_T     i64
+#    define CURL_SUFFIX_CURL_OFF_TU    ui64
 #  else
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     4
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
+#  define CURL_TYPEOF_CURL_SOCKLEN_T int
 
 /* ===================================== */
 /*    KEEP GENERIC GCC THE LAST ENTRY    */
 /* ===================================== */
 
 #elif defined(__GNUC__)
-#  if !defined(__LP64__) && (defined(__ILP32__) || \
-      defined(__i386__) || defined(__ppc__) || defined(__arm__) || \
-      defined(__sparc__) || defined(__mips__) || defined(__sh__))
-#    define CURLSYS_SIZEOF_LONG           4
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "lld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "llu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     LL
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    ULL
+#  if !defined(__LP64__) &&                                             \
+  (defined(__ILP32__) || defined(__i386__) || defined(__hppa__) ||      \
+   defined(__ppc__) || defined(__powerpc__) || defined(__arm__) ||      \
+   defined(__sparc__) || defined(__mips__) || defined(__sh__) ||        \
+   defined(__XTENSA__) ||                                               \
+   (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 4))
+#    define CURL_TYPEOF_CURL_OFF_T     long long
+#    define CURL_FORMAT_CURL_OFF_T     "lld"
+#    define CURL_FORMAT_CURL_OFF_TU    "llu"
+#    define CURL_SUFFIX_CURL_OFF_T     LL
+#    define CURL_SUFFIX_CURL_OFF_TU    ULL
 #  elif defined(__LP64__) || \
-        defined(__x86_64__) || defined(__ppc64__) || defined(__sparc64__)
-#    define CURLSYS_SIZEOF_LONG           8
-#    define CURLSYS_TYPEOF_CURL_OFF_T     long
-#    define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-#    define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-#    define CURLSYS_SIZEOF_CURL_OFF_T     8
-#    define CURLSYS_SUFFIX_CURL_OFF_T     L
-#    define CURLSYS_SUFFIX_CURL_OFF_TU    UL
+        defined(__x86_64__) || defined(__ppc64__) || defined(__sparc64__) || \
+        (defined(__SIZEOF_LONG__) && __SIZEOF_LONG__ == 8)
+#    define CURL_TYPEOF_CURL_OFF_T     long
+#    define CURL_FORMAT_CURL_OFF_T     "ld"
+#    define CURL_FORMAT_CURL_OFF_TU    "lu"
+#    define CURL_SUFFIX_CURL_OFF_T     L
+#    define CURL_SUFFIX_CURL_OFF_TU    UL
 #  endif
-#  define CURLSYS_TYPEOF_CURL_SOCKLEN_T socklen_t
-#  define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-#  define CURLSYS_PULL_SYS_TYPES_H      1
-#  define CURLSYS_PULL_SYS_SOCKET_H     1
+#  define CURL_TYPEOF_CURL_SOCKLEN_T socklen_t
+#  define CURL_PULL_SYS_TYPES_H      1
+#  define CURL_PULL_SYS_SOCKET_H     1
 
 #else
 /* generic "safe guess" on old 32 bit style */
-# define CURLSYS_SIZEOF_LONG 4
-# define CURLSYS_SIZEOF_CURL_SOCKLEN_T 4
-# define CURLSYS_SIZEOF_CURL_OFF_T 4
-# define CURLSYS_TYPEOF_CURL_OFF_T     long
-# define CURLSYS_FORMAT_CURL_OFF_T     "ld"
-# define CURLSYS_FORMAT_CURL_OFF_TU    "lu"
-# define CURLSYS_SUFFIX_CURL_OFF_T     L
-# define CURLSYS_SUFFIX_CURL_OFF_TU    UL
-# define CURLSYS_TYPEOF_CURL_SOCKLEN_T int
+# define CURL_TYPEOF_CURL_OFF_T     long
+# define CURL_FORMAT_CURL_OFF_T     "ld"
+# define CURL_FORMAT_CURL_OFF_TU    "lu"
+# define CURL_SUFFIX_CURL_OFF_T     L
+# define CURL_SUFFIX_CURL_OFF_TU    UL
+# define CURL_TYPEOF_CURL_SOCKLEN_T int
 #endif
 
-/* CURLSYS_PULL_WS2TCPIP_H is defined above when inclusion of header file  */
+#ifdef _AIX
+/* AIX needs <sys/poll.h> */
+#define CURL_PULL_SYS_POLL_H
+#endif
+
+
+/* CURL_PULL_WS2TCPIP_H is defined above when inclusion of header file  */
 /* ws2tcpip.h is required here to properly make type definitions below. */
-#ifdef CURLSYS_PULL_WS2TCPIP_H
-#  ifndef WIN32_LEAN_AND_MEAN
-#    define WIN32_LEAN_AND_MEAN
-#  endif
-#  include <windows.h>
+#ifdef CURL_PULL_WS2TCPIP_H
 #  include <winsock2.h>
+#  include <windows.h>
 #  include <ws2tcpip.h>
 #endif
 
-/* CURLSYS_PULL_SYS_TYPES_H is defined above when inclusion of header file  */
+/* CURL_PULL_SYS_TYPES_H is defined above when inclusion of header file  */
 /* sys/types.h is required here to properly make type definitions below. */
-#ifdef CURLSYS_PULL_SYS_TYPES_H
+#ifdef CURL_PULL_SYS_TYPES_H
 #  include <sys/types.h>
 #endif
 
-/* CURLSYS_PULL_SYS_SOCKET_H is defined above when inclusion of header file  */
+/* CURL_PULL_SYS_SOCKET_H is defined above when inclusion of header file  */
 /* sys/socket.h is required here to properly make type definitions below. */
-#ifdef CURLSYS_PULL_SYS_SOCKET_H
+#ifdef CURL_PULL_SYS_SOCKET_H
 #  include <sys/socket.h>
 #endif
 
+/* CURL_PULL_SYS_POLL_H is defined above when inclusion of header file    */
+/* sys/poll.h is required here to properly make type definitions below.   */
+#ifdef CURL_PULL_SYS_POLL_H
+#  include <sys/poll.h>
+#endif
+
 /* Data type definition of curl_socklen_t. */
-#ifdef CURLSYS_TYPEOF_CURL_SOCKLEN_T
-  typedef CURLSYS_TYPEOF_CURL_SOCKLEN_T curlsys_socklen_t;
+#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
+  typedef CURL_TYPEOF_CURL_SOCKLEN_T curl_socklen_t;
 #endif
 
 /* Data type definition of curl_off_t. */
 
-#ifdef CURLSYS_TYPEOF_CURL_OFF_T
-  typedef CURLSYS_TYPEOF_CURL_OFF_T curlsys_off_t;
+#ifdef CURL_TYPEOF_CURL_OFF_T
+  typedef CURL_TYPEOF_CURL_OFF_T curl_off_t;
 #endif
 
-#endif /* __CURL_SYSTEM_H */
+/*
+ * CURL_ISOCPP and CURL_OFF_T_C definitions are done here in order to allow
+ * these to be visible and exported by the external libcurl interface API,
+ * while also making them visible to the library internals, simply including
+ * curl_setup.h, without actually needing to include curl.h internally.
+ * If some day this section would grow big enough, all this should be moved
+ * to its own header file.
+ */
 
+/*
+ * Figure out if we can use the ## preprocessor operator, which is supported
+ * by ISO/ANSI C and C++. Some compilers support it without setting __STDC__
+ * or  __cplusplus so we need to carefully check for them too.
+ */
+
+#if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) || \
+  defined(__HP_aCC) || defined(__BORLANDC__) || defined(__LCC__) || \
+  defined(__POCC__) || defined(__SALFORDC__) || defined(__HIGHC__) || \
+  defined(__ILEC400__)
+  /* This compiler is believed to have an ISO compatible preprocessor */
+#define CURL_ISOCPP
+#else
+  /* This compiler is believed NOT to have an ISO compatible preprocessor */
+#undef CURL_ISOCPP
+#endif
+
+/*
+ * Macros for minimum-width signed and unsigned curl_off_t integer constants.
+ */
+
+#if defined(__BORLANDC__) && (__BORLANDC__ == 0x0551)
+#  define __CURL_OFF_T_C_HLPR2(x) x
+#  define __CURL_OFF_T_C_HLPR1(x) __CURL_OFF_T_C_HLPR2(x)
+#  define CURL_OFF_T_C(Val)  __CURL_OFF_T_C_HLPR1(Val) ## \
+                             __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val) ## \
+                             __CURL_OFF_T_C_HLPR1(CURL_SUFFIX_CURL_OFF_TU)
+#else
+#  ifdef CURL_ISOCPP
+#    define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val ## Suffix
+#  else
+#    define __CURL_OFF_T_C_HLPR2(Val,Suffix) Val/**/Suffix
+#  endif
+#  define __CURL_OFF_T_C_HLPR1(Val,Suffix) __CURL_OFF_T_C_HLPR2(Val,Suffix)
+#  define CURL_OFF_T_C(Val)  __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_T)
+#  define CURL_OFF_TU_C(Val) __CURL_OFF_T_C_HLPR1(Val,CURL_SUFFIX_CURL_OFF_TU)
+#endif
+
+#endif /* __CURL_SYSTEM_H */
diff --git a/include/curl/typecheck-gcc.h b/include/curl/typecheck-gcc.h
index 10b5de2..10c74c7 100644
--- a/include/curl/typecheck-gcc.h
+++ b/include/curl/typecheck-gcc.h
@@ -96,6 +96,9 @@ __extension__ ({                                                              \
     if((_curl_opt) == CURLOPT_HTTPPOST)                                       \
       if(!_curl_is_arr((value), struct curl_httppost))                        \
         _curl_easy_setopt_err_curl_httpost();                                 \
+    if((_curl_opt) == CURLOPT_MIMEPOST)                                       \
+      if(!_curl_is_ptr((value), curl_mime))                                   \
+        _curl_easy_setopt_err_curl_mimepost();                                \
     if(_curl_is_slist_option(_curl_opt))                                      \
       if(!_curl_is_arr((value), struct curl_slist))                           \
         _curl_easy_setopt_err_curl_slist();                                   \
@@ -110,7 +113,7 @@ __extension__ ({                                                              \
 /* FIXME: don't allow const pointers */
 #define curl_easy_getinfo(handle, info, arg)                                  \
 __extension__ ({                                                              \
-  __typeof__(info) _curl_info = info;                                        \
+  __typeof__(info) _curl_info = info;                                         \
   if(__builtin_constant_p(_curl_info)) {                                      \
     if(_curl_is_string_info(_curl_info))                                      \
       if(!_curl_is_arr((arg), char *))                                        \
@@ -130,9 +133,12 @@ __extension__ ({                                                              \
     if(_curl_is_certinfo_info(_curl_info))                                    \
       if(!_curl_is_arr((arg), struct curl_certinfo *))                        \
         _curl_easy_getinfo_err_curl_certinfo();                               \
-   if(_curl_is_socket_info(_curl_info))                                       \
+    if(_curl_is_socket_info(_curl_info))                                      \
       if(!_curl_is_arr((arg), curl_socket_t))                                 \
         _curl_easy_getinfo_err_curl_socket();                                 \
+    if(_curl_is_off_t_info(_curl_info))                                       \
+      if(!_curl_is_arr((arg), curl_off_t))                                    \
+        _curl_easy_getinfo_err_curl_off_t();                                  \
   }                                                                           \
   curl_easy_getinfo(handle, _curl_info, arg);                                 \
 })
@@ -197,6 +203,9 @@ _CURL_WARNING(_curl_easy_setopt_err_postfields,
 _CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
               "curl_easy_setopt expects a 'struct curl_httppost *' "
               "argument for this option")
+_CURL_WARNING(_curl_easy_setopt_err_curl_mimepost,
+              "curl_easy_setopt expects a 'curl_mime *' "
+              "argument for this option")
 _CURL_WARNING(_curl_easy_setopt_err_curl_slist,
   "curl_easy_setopt expects a 'struct curl_slist *' argument for this option")
 _CURL_WARNING(_curl_easy_setopt_err_CURLSH,
@@ -218,6 +227,8 @@ _CURL_WARNING(_curl_easy_getinfo_err_curl_certinfo,
               "'struct curl_certinfo *' for this info")
 _CURL_WARNING(_curl_easy_getinfo_err_curl_socket,
   "curl_easy_getinfo expects a pointer to curl_socket_t for this info")
+_CURL_WARNING(_curl_easy_getinfo_err_curl_off_t,
+  "curl_easy_getinfo expects a pointer to curl_off_t for this info")
 
 /* groups of curl_easy_setops options that take the same type of argument */
 
@@ -391,7 +402,11 @@ _CURL_WARNING(_curl_easy_getinfo_err_curl_socket,
 
 /* true if info expects a pointer to struct curl_socket_t argument */
 #define _curl_is_socket_info(info)                                            \
-  (CURLINFO_SOCKET < (info))
+  (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)
+
+/* true if info expects a pointer to curl_off_t argument */
+#define _curl_is_off_t_info(info)                                             \
+  (CURLINFO_OFF_T < (info))
 
 
 /* typecheck helpers -- check whether given expression has requested type*/
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index eb2de6d..d6c9961 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -1,7 +1,5 @@
 set(LIB_NAME libcurl)
 
-configure_file(${CURL_SOURCE_DIR}/include/curl/curlbuild.h.cmake
-  ${CURL_BINARY_DIR}/include/curl/curlbuild.h)
 configure_file(curl_config.h.cmake
   ${CMAKE_CURRENT_BINARY_DIR}/curl_config.h)
 
@@ -10,11 +8,11 @@ include(${CMAKE_CURRENT_BINARY_DIR}/Makefile.inc.cmake)
 
 list(APPEND HHEADERS
   ${CMAKE_CURRENT_BINARY_DIR}/curl_config.h
-  ${CURL_BINARY_DIR}/include/curl/curlbuild.h
   )
 
 if(MSVC)
   list(APPEND CSOURCES libcurl.rc)
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4127")
 endif()
 
 # SET(CSOURCES
@@ -100,6 +98,13 @@ if(WIN32)
   if(NOT CURL_STATICLIB)
     # Add "_imp" as a suffix before the extension to avoid conflicting with the statically linked "libcurl.lib"
     set_target_properties(${LIB_NAME} PROPERTIES IMPORT_SUFFIX "_imp.lib")
+
+    set_target_properties (${LIB_NAME} PROPERTIES
+       DEBUG_POSTFIX "-d"
+       # Note: no postfix for release variants, let user choose what style of release he wants
+       # MINSIZEREL_POSTFIX "-z"
+       # RELWITHDEBINFO_POSTFIX "-g"
+       )
   endif()
 endif()
 
diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index 19f5800..5c0b930 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -53,7 +53,8 @@ LIB_CFILES = file.c timeval.c base64.c hostip.c progress.c formdata.c   \
   http_proxy.c non-ascii.c asyn-ares.c asyn-thread.c curl_gssapi.c      \
   http_ntlm.c curl_ntlm_wb.c curl_ntlm_core.c curl_sasl.c rand.c        \
   curl_multibyte.c hostcheck.c conncache.c pipeline.c dotdot.c          \
-  x509asn1.c http2.c smb.c curl_endian.c curl_des.c system_win32.c
+  x509asn1.c http2.c smb.c curl_endian.c curl_des.c system_win32.c      \
+  mime.c
 
 LIB_HFILES = arpa_telnet.h netrc.h file.h timeval.h hostip.h progress.h \
   formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h if2ip.h         \
@@ -72,7 +73,7 @@ LIB_HFILES = arpa_telnet.h netrc.h file.h timeval.h hostip.h progress.h \
   curl_sasl.h curl_multibyte.h hostcheck.h conncache.h                  \
   curl_setup_once.h multihandle.h setup-vms.h pipeline.h dotdot.h       \
   x509asn1.h http2.h sigpipe.h smb.h curl_endian.h curl_des.h           \
-  curl_printf.h system_win32.h rand.h
+  curl_printf.h system_win32.h rand.h mime.h
 
 LIB_RCFILES = libcurl.rc
 
diff --git a/lib/asyn-ares.c b/lib/asyn-ares.c
index 11a914f..87e70b4 100644
--- a/lib/asyn-ares.c
+++ b/lib/asyn-ares.c
@@ -260,7 +260,7 @@ static int waitperform(struct connectdata *conn, int timeout_ms)
   bitmask = ares_getsock((ares_channel)data->state.resolver, socks,
                          ARES_GETSOCK_MAXNUM);
 
-  for(i=0; i < ARES_GETSOCK_MAXNUM; i++) {
+  for(i = 0; i < ARES_GETSOCK_MAXNUM; i++) {
     pfd[i].events = 0;
     pfd[i].revents = 0;
     if(ARES_GETSOCK_READABLE(bitmask, i)) {
@@ -289,7 +289,7 @@ static int waitperform(struct connectdata *conn, int timeout_ms)
                     ARES_SOCKET_BAD);
   else {
     /* move through the descriptors and ask for processing on them */
-    for(i=0; i < num; i++)
+    for(i = 0; i < num; i++)
       ares_process_fd((ares_channel)data->state.resolver,
                       pfd[i].revents & (POLLRDNORM|POLLIN)?
                       pfd[i].fd:ARES_SOCKET_BAD,
@@ -355,7 +355,7 @@ CURLcode Curl_resolver_wait_resolv(struct connectdata *conn,
   CURLcode result = CURLE_OK;
   struct Curl_easy *data = conn->data;
   long timeout;
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
   struct Curl_dns_entry *temp_entry;
 
   if(entry)
@@ -400,7 +400,7 @@ CURLcode Curl_resolver_wait_resolv(struct connectdata *conn,
     if(Curl_pgrsUpdate(conn))
       result = CURLE_ABORTED_BY_CALLBACK;
     else {
-      struct timeval now2 = Curl_tvnow();
+      struct curltime now2 = Curl_tvnow();
       time_t timediff = Curl_tvdiff(now2, now); /* spent time */
       if(timediff <= 0)
         timeout -= 1; /* always deduct at least 1 */
diff --git a/lib/asyn-thread.c b/lib/asyn-thread.c
index 65fa6c5..a867729 100644
--- a/lib/asyn-thread.c
+++ b/lib/asyn-thread.c
@@ -210,6 +210,10 @@ int init_thread_sync_data(struct thread_data * td,
 
   tsd->td = td;
   tsd->port = port;
+  /* Treat the request as done until the thread actually starts so any early
+   * cleanup gets done properly.
+   */
+  tsd->done = 1;
 #ifdef HAVE_GETADDRINFO
   DEBUGASSERT(hints);
   tsd->hints = *hints;
@@ -380,11 +384,11 @@ static bool init_resolve_thread(struct connectdata *conn,
                                 const struct addrinfo *hints)
 {
   struct thread_data *td = calloc(1, sizeof(struct thread_data));
-  int err = RESOLVER_ENOMEM;
+  int err = ENOMEM;
 
   conn->async.os_specific = (void *)td;
   if(!td)
-    goto err_exit;
+    goto errno_exit;
 
   conn->async.port = port;
   conn->async.done = FALSE;
@@ -392,14 +396,20 @@ static bool init_resolve_thread(struct connectdata *conn,
   conn->async.dns = NULL;
   td->thread_hnd = curl_thread_t_null;
 
-  if(!init_thread_sync_data(td, hostname, port, hints))
-    goto err_exit;
+  if(!init_thread_sync_data(td, hostname, port, hints)) {
+    conn->async.os_specific = NULL;
+    free(td);
+    goto errno_exit;
+  }
 
   free(conn->async.hostname);
   conn->async.hostname = strdup(hostname);
   if(!conn->async.hostname)
     goto err_exit;
 
+  /* The thread will set this to 1 when complete. */
+  td->tsd.done = 0;
+
 #ifdef HAVE_GETADDRINFO
   td->thread_hnd = Curl_thread_create(getaddrinfo_thread, &td->tsd);
 #else
@@ -407,9 +417,9 @@ static bool init_resolve_thread(struct connectdata *conn,
 #endif
 
   if(!td->thread_hnd) {
-#ifndef _WIN32_WCE
+    /* The thread never started, so mark it as done here for proper cleanup. */
+    td->tsd.done = 1;
     err = errno;
-#endif
     goto err_exit;
   }
 
@@ -418,8 +428,8 @@ static bool init_resolve_thread(struct connectdata *conn,
  err_exit:
   destroy_async_data(&conn->async);
 
-  SET_ERRNO(err);
-
+ errno_exit:
+  errno = err;
   return FALSE;
 }
 
@@ -594,28 +604,29 @@ Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn,
                                          int *waitp)
 {
   struct addrinfo hints;
-  struct in_addr in;
   Curl_addrinfo *res;
   int error;
   char sbuf[12];
   int pf = PF_INET;
-#ifdef CURLRES_IPV6
-  struct in6_addr in6;
-#endif /* CURLRES_IPV6 */
 
   *waitp = 0; /* default to synchronous response */
 
 #ifndef USE_RESOLVE_ON_IPS
-  /* First check if this is an IPv4 address string */
-  if(Curl_inet_pton(AF_INET, hostname, &in) > 0)
-    /* This is a dotted IP address 123.123.123.123-style */
-    return Curl_ip2addr(AF_INET, &in, hostname, port);
-
+  {
+    struct in_addr in;
+    /* First check if this is an IPv4 address string */
+    if(Curl_inet_pton(AF_INET, hostname, &in) > 0)
+      /* This is a dotted IP address 123.123.123.123-style */
+      return Curl_ip2addr(AF_INET, &in, hostname, port);
+  }
 #ifdef CURLRES_IPV6
-  /* check if this is an IPv6 address string */
-  if(Curl_inet_pton(AF_INET6, hostname, &in6) > 0)
-    /* This is an IPv6 address literal */
-    return Curl_ip2addr(AF_INET6, &in6, hostname, port);
+  {
+    struct in6_addr in6;
+    /* check if this is an IPv6 address string */
+    if(Curl_inet_pton(AF_INET6, hostname, &in6) > 0)
+      /* This is an IPv6 address literal */
+      return Curl_ip2addr(AF_INET6, &in6, hostname, port);
+  }
 #endif /* CURLRES_IPV6 */
 #endif /* !USE_RESOLVE_ON_IPS */
 
@@ -654,7 +665,7 @@ Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn,
 
   /* fall-back to blocking version */
   infof(conn->data, "init_resolve_thread() failed for %s; %s\n",
-        hostname, Curl_strerror(conn, ERRNO));
+        hostname, Curl_strerror(conn, errno));
 
   error = Curl_getaddrinfo_ex(hostname, sbuf, &hints, &res);
   if(error) {
diff --git a/lib/conncache.h b/lib/conncache.h
index f976cfd..14be4e8 100644
--- a/lib/conncache.h
+++ b/lib/conncache.h
@@ -27,7 +27,7 @@ struct conncache {
   struct curl_hash hash;
   size_t num_connections;
   long next_connection_id;
-  struct timeval last_cleanup;
+  struct curltime last_cleanup;
 };
 
 #define BUNDLE_NO_MULTIUSE -1
diff --git a/lib/connect.c b/lib/connect.c
index d4fd52b..b7d10af 100644
--- a/lib/connect.c
+++ b/lib/connect.c
@@ -180,12 +180,12 @@ singleipconnect(struct connectdata *conn,
  * @unittest: 1303
  */
 time_t Curl_timeleft(struct Curl_easy *data,
-                     struct timeval *nowp,
+                     struct curltime *nowp,
                      bool duringconnect)
 {
   int timeout_set = 0;
   time_t timeout_ms = duringconnect?DEFAULT_CONNECT_TIMEOUT:0;
-  struct timeval now;
+  struct curltime now;
 
   /* if a timeout is set, use the most restrictive one */
 
@@ -249,7 +249,7 @@ static CURLcode bindlocal(struct connectdata *conn,
   struct sockaddr_in6 *si6 = (struct sockaddr_in6 *)&sa;
 #endif
 
-  struct Curl_dns_entry *h=NULL;
+  struct Curl_dns_entry *h = NULL;
   unsigned short port = data->set.localport; /* use this port number, 0 for
                                                 "random" */
   /* how many port numbers to try to bind to, increasing one at a time */
@@ -319,7 +319,7 @@ static CURLcode bindlocal(struct connectdata *conn,
            * as a hostname or ip address.
            */
           if(setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE,
-                        dev, (curl_socklen_t)strlen(dev)+1) != 0) {
+                        dev, (curl_socklen_t)strlen(dev) + 1) != 0) {
             error = SOCKERRNO;
             infof(data, "SO_BINDTODEVICE %s failed with errno %d: %s;"
                   " will do regular bind\n",
@@ -607,7 +607,8 @@ void Curl_persistconninfo(struct connectdata *conn)
   conn->data->info.conn_local_port = conn->local_port;
 }
 
-/* retrieves ip address and port from a sockaddr structure */
+/* retrieves ip address and port from a sockaddr structure.
+   note it calls Curl_inet_ntop which sets errno on fail, not SOCKERRNO. */
 static bool getaddressinfo(struct sockaddr *sa, char *addr,
                            long *port)
 {
@@ -654,7 +655,7 @@ static bool getaddressinfo(struct sockaddr *sa, char *addr,
 
   addr[0] = '\0';
   *port = 0;
-
+  errno = EAFNOSUPPORT;
   return FALSE;
 }
 
@@ -672,11 +673,9 @@ void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd)
     return;
 
   if(!conn->bits.reuse && !conn->bits.tcp_fastopen) {
-    int error;
-
     len = sizeof(struct Curl_sockaddr_storage);
     if(getpeername(sockfd, (struct sockaddr*) &ssrem, &len)) {
-      error = SOCKERRNO;
+      int error = SOCKERRNO;
       failf(data, "getpeername() failed with errno %d: %s",
             error, Curl_strerror(conn, error));
       return;
@@ -685,7 +684,7 @@ void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd)
     len = sizeof(struct Curl_sockaddr_storage);
     memset(&ssloc, 0, sizeof(ssloc));
     if(getsockname(sockfd, (struct sockaddr*) &ssloc, &len)) {
-      error = SOCKERRNO;
+      int error = SOCKERRNO;
       failf(data, "getsockname() failed with errno %d: %s",
             error, Curl_strerror(conn, error));
       return;
@@ -693,18 +692,16 @@ void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd)
 
     if(!getaddressinfo((struct sockaddr*)&ssrem,
                         conn->primary_ip, &conn->primary_port)) {
-      error = ERRNO;
       failf(data, "ssrem inet_ntop() failed with errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       return;
     }
     memcpy(conn->ip_addr_str, conn->primary_ip, MAX_IPADR_LEN);
 
     if(!getaddressinfo((struct sockaddr*)&ssloc,
                        conn->local_ip, &conn->local_port)) {
-      error = ERRNO;
       failf(data, "ssloc inet_ntop() failed with errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       return;
     }
 
@@ -726,7 +723,7 @@ CURLcode Curl_is_connected(struct connectdata *conn,
   CURLcode result = CURLE_OK;
   time_t allow;
   int error = 0;
-  struct timeval now;
+  struct curltime now;
   int rc;
   int i;
 
@@ -751,7 +748,7 @@ CURLcode Curl_is_connected(struct connectdata *conn,
     return CURLE_OPERATION_TIMEDOUT;
   }
 
-  for(i=0; i<2; i++) {
+  for(i = 0; i<2; i++) {
     const int other = i ^ 1;
     if(conn->tempsock[i] == CURL_SOCKET_BAD)
       continue;
@@ -879,19 +876,6 @@ void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd)
   curl_socklen_t onoff = (curl_socklen_t) 1;
   int level = IPPROTO_TCP;
 
-#if 0
-  /* The use of getprotobyname() is disabled since it isn't thread-safe on
-     numerous systems. On these getprotobyname_r() should be used instead, but
-     that exists in at least one 4 arg version and one 5 arg version, and
-     since the proto number rarely changes anyway we now just use the hard
-     coded number. The "proper" fix would need a configure check for the
-     correct function much in the same style the gethostbyname_r versions are
-     detected. */
-  struct protoent *pe = getprotobyname("tcp");
-  if(pe)
-    level = pe->p_proto;
-#endif
-
 #if defined(CURL_DISABLE_VERBOSE_STRINGS)
   (void) conn;
 #endif
@@ -916,7 +900,7 @@ void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd)
 static void nosigpipe(struct connectdata *conn,
                       curl_socket_t sockfd)
 {
-  struct Curl_easy *data= conn->data;
+  struct Curl_easy *data = conn->data;
   int onoff = 1;
   if(setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&onoff,
                 sizeof(onoff)) < 0)
@@ -1008,9 +992,8 @@ static CURLcode singleipconnect(struct connectdata *conn,
   if(!getaddressinfo((struct sockaddr*)&addr.sa_addr,
                      ipaddress, &port)) {
     /* malformed address or bug in inet_ntop, try next address */
-    error = ERRNO;
     failf(data, "sa_addr inet_ntop() failed with errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     Curl_closesocket(conn, sockfd);
     return CURLE_OK;
   }
@@ -1076,16 +1059,25 @@ static CURLcode singleipconnect(struct connectdata *conn,
   if(!isconnected && (conn->socktype == SOCK_STREAM)) {
     if(conn->bits.tcp_fastopen) {
 #if defined(CONNECT_DATA_IDEMPOTENT) /* OS X */
-      sa_endpoints_t endpoints;
-      endpoints.sae_srcif = 0;
-      endpoints.sae_srcaddr = NULL;
-      endpoints.sae_srcaddrlen = 0;
-      endpoints.sae_dstaddr = &addr.sa_addr;
-      endpoints.sae_dstaddrlen = addr.addrlen;
-
-      rc = connectx(sockfd, &endpoints, SAE_ASSOCID_ANY,
-                    CONNECT_RESUME_ON_READ_WRITE | CONNECT_DATA_IDEMPOTENT,
-                    NULL, 0, NULL, NULL);
+#ifdef HAVE_BUILTIN_AVAILABLE
+      if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
+#endif /* HAVE_BUILTIN_AVAILABLE */
+        sa_endpoints_t endpoints;
+        endpoints.sae_srcif = 0;
+        endpoints.sae_srcaddr = NULL;
+        endpoints.sae_srcaddrlen = 0;
+        endpoints.sae_dstaddr = &addr.sa_addr;
+        endpoints.sae_dstaddrlen = addr.addrlen;
+
+        rc = connectx(sockfd, &endpoints, SAE_ASSOCID_ANY,
+                      CONNECT_RESUME_ON_READ_WRITE | CONNECT_DATA_IDEMPOTENT,
+                      NULL, 0, NULL, NULL);
+#ifdef HAVE_BUILTIN_AVAILABLE
+      }
+      else {
+        rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+      }
+#endif /* HAVE_BUILTIN_AVAILABLE */
 #elif defined(MSG_FASTOPEN) /* Linux */
       if(conn->given->flags & PROTOPT_SSL)
         rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
@@ -1153,7 +1145,7 @@ CURLcode Curl_connecthost(struct connectdata *conn,  /* context */
                           const struct Curl_dns_entry *remotehost)
 {
   struct Curl_easy *data = conn->data;
-  struct timeval before = Curl_tvnow();
+  struct curltime before = Curl_tvnow();
   CURLcode result = CURLE_COULDNT_CONNECT;
 
   time_t timeout_ms = Curl_timeleft(data, &before, TRUE);
@@ -1169,7 +1161,6 @@ CURLcode Curl_connecthost(struct connectdata *conn,  /* context */
   conn->tempaddr[1] = NULL;
   conn->tempsock[0] = CURL_SOCKET_BAD;
   conn->tempsock[1] = CURL_SOCKET_BAD;
-  Curl_expire(conn->data, HAPPY_EYEBALLS_TIMEOUT, EXPIRE_HAPPY_EYEBALLS);
 
   /* Max time for the next connection attempt */
   conn->timeoutms_per_addr =
@@ -1190,6 +1181,7 @@ CURLcode Curl_connecthost(struct connectdata *conn,  /* context */
   }
 
   data->info.numconnects++; /* to track the number of connections made */
+  Curl_expire(conn->data, HAPPY_EYEBALLS_TIMEOUT, EXPIRE_HAPPY_EYEBALLS);
 
   return CURLE_OK;
 }
@@ -1341,7 +1333,7 @@ CURLcode Curl_socket(struct connectdata *conn,
 
   addr->family = ai->ai_family;
   addr->socktype = conn->socktype;
-  addr->protocol = conn->socktype==SOCK_DGRAM?IPPROTO_UDP:ai->ai_protocol;
+  addr->protocol = conn->socktype == SOCK_DGRAM?IPPROTO_UDP:ai->ai_protocol;
   addr->addrlen = ai->ai_addrlen;
 
   if(addr->addrlen > sizeof(struct Curl_sockaddr_storage))
diff --git a/lib/connect.h b/lib/connect.h
index 44bdb10..3f05c39 100644
--- a/lib/connect.h
+++ b/lib/connect.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -36,7 +36,7 @@ CURLcode Curl_connecthost(struct connectdata *conn,
 /* generic function that returns how much time there's left to run, according
    to the timeouts set */
 time_t Curl_timeleft(struct Curl_easy *data,
-                     struct timeval *nowp,
+                     struct curltime *nowp,
                      bool duringconnect);
 
 #define DEFAULT_CONNECT_TIMEOUT 300000 /* milliseconds == five minutes */
diff --git a/lib/content_encoding.c b/lib/content_encoding.c
index 652ed97..1102260 100644
--- a/lib/content_encoding.c
+++ b/lib/content_encoding.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -227,7 +227,7 @@ static enum {
 
     extra_len = (data[1] << 8) | data[0];
 
-    if(len < (extra_len+2))
+    if(len < (extra_len + 2))
       return GZIP_UNDERFLOW;
 
     len -= (extra_len + 2);
@@ -288,7 +288,7 @@ Curl_unencode_gzip_write(struct connectdata *conn,
 
     if(strcmp(zlibVersion(), "1.2.0.4") >= 0) {
       /* zlib ver. >= 1.2.0.4 supports transparent gzip decompressing */
-      if(inflateInit2(z, MAX_WBITS+32) != Z_OK) {
+      if(inflateInit2(z, MAX_WBITS + 32) != Z_OK) {
         return process_zlib_error(conn, z);
       }
       k->zlib_init = ZLIB_INIT_GZIP; /* Transparent gzip decompress state */
diff --git a/lib/cookie.c b/lib/cookie.c
index 6b678ae..7fb596a 100644
--- a/lib/cookie.c
+++ b/lib/cookie.c
@@ -125,7 +125,7 @@ static bool tailmatch(const char *cooke_domain, const char *hostname)
   if(hostname_len < cookie_domain_len)
     return FALSE;
 
-  if(!strcasecompare(cooke_domain, hostname+hostname_len-cookie_domain_len))
+  if(!strcasecompare(cooke_domain, hostname + hostname_len-cookie_domain_len))
     return FALSE;
 
   /* A lead char of cookie_domain is not '.'.
@@ -375,9 +375,8 @@ Curl_cookie_add(struct Curl_easy *data,
                                        unless set */
 {
   struct Cookie *clist;
-  char name[MAX_NAME];
   struct Cookie *co;
-  struct Cookie *lastc=NULL;
+  struct Cookie *lastc = NULL;
   time_t now = time(NULL);
   bool replace_old = FALSE;
   bool badcookie = FALSE; /* cookies are good by default. mmmmm yummy */
@@ -397,17 +396,19 @@ Curl_cookie_add(struct Curl_easy *data,
 
   if(httpheader) {
     /* This line was read off a HTTP-header */
+    char name[MAX_NAME];
+    char what[MAX_NAME];
     const char *ptr;
     const char *semiptr;
-    char *what;
 
-    what = malloc(MAX_COOKIE_LINE);
-    if(!what) {
+    size_t linelength = strlen(lineptr);
+    if(linelength > MAX_COOKIE_LINE) {
+      /* discard overly long lines at once */
       free(co);
       return NULL;
     }
 
-    semiptr=strchr(lineptr, ';'); /* first, find a semicolon */
+    semiptr = strchr(lineptr, ';'); /* first, find a semicolon */
 
     while(*lineptr && ISBLANK(*lineptr))
       lineptr++;
@@ -415,9 +416,9 @@ Curl_cookie_add(struct Curl_easy *data,
     ptr = lineptr;
     do {
       /* we have a <what>=<this> pair or a stand-alone word here */
-      name[0]=what[0]=0; /* init the buffers */
+      name[0] = what[0] = 0; /* init the buffers */
       if(1 <= sscanf(ptr, "%" MAX_NAME_TXT "[^;\r\n=] =%"
-                     MAX_COOKIE_LINE_TXT "[^;\r\n]",
+                     MAX_NAME_TXT "[^;\r\n]",
                      name, what)) {
         /* Use strstore() below to properly deal with received cookie
            headers that have the same string property set more than once,
@@ -425,10 +426,24 @@ Curl_cookie_add(struct Curl_easy *data,
         const char *whatptr;
         bool done = FALSE;
         bool sep;
-        size_t len=strlen(what);
+        size_t len = strlen(what);
         size_t nlen = strlen(name);
         const char *endofn = &ptr[ nlen ];
 
+        infof(data, "cookie size: name/val %d + %d bytes\n",
+              nlen, len);
+
+        if(nlen >= (MAX_NAME-1) || len >= (MAX_NAME-1) ||
+           ((nlen + len) > MAX_NAME)) {
+          /* too long individual name or contents, or too long combination of
+             name + contents. Chrome and Firefox support 4095 or 4096 bytes
+             combo. */
+          freecookie(co);
+          infof(data, "oversized cookie dropped, name/val %d + %d bytes\n",
+                nlen, len);
+          return NULL;
+        }
+
         /* name ends with a '=' ? */
         sep = (*endofn == '=')?TRUE:FALSE;
 
@@ -440,18 +455,18 @@ Curl_cookie_add(struct Curl_easy *data,
               endofn--;
               nlen--;
             }
-            name[nlen]=0; /* new end of name */
+            name[nlen] = 0; /* new end of name */
           }
         }
 
         /* Strip off trailing whitespace from the 'what' */
         while(len && ISBLANK(what[len-1])) {
-          what[len-1]=0;
+          what[len-1] = 0;
           len--;
         }
 
         /* Skip leading whitespace from the 'what' */
-        whatptr=what;
+        whatptr = what;
         while(*whatptr && ISBLANK(*whatptr))
           whatptr++;
 
@@ -484,6 +499,7 @@ Curl_cookie_add(struct Curl_easy *data,
             badcookie = TRUE; /* out of memory bad */
             break;
           }
+          free(co->spath); /* if this is set again */
           co->spath = sanitize_cookie_path(co->path);
           if(!co->spath) {
             badcookie = TRUE; /* out of memory bad */
@@ -510,7 +526,7 @@ Curl_cookie_add(struct Curl_easy *data,
             /* check for more dots */
             dotp = strchr(whatptr, '.');
             if(!dotp && !strcasecompare("localhost", whatptr))
-              domain=":";
+              domain = ":";
           }
 #endif
 
@@ -525,14 +541,14 @@ Curl_cookie_add(struct Curl_easy *data,
               break;
             }
             if(!is_ip)
-              co->tailmatch=TRUE; /* we always do that if the domain name was
-                                     given */
+              co->tailmatch = TRUE; /* we always do that if the domain name was
+                                       given */
           }
           else {
             /* we did not get a tailmatch and then the attempted set domain
                is not a domain to which the current host belongs. Mark as
                bad. */
-            badcookie=TRUE;
+            badcookie = TRUE;
             infof(data, "skipped cookie with bad tailmatch domain: %s\n",
                   whatptr);
           }
@@ -581,26 +597,32 @@ Curl_cookie_add(struct Curl_easy *data,
         continue;
       }
 
-      ptr=semiptr+1;
+      ptr = semiptr + 1;
       while(*ptr && ISBLANK(*ptr))
         ptr++;
-      semiptr=strchr(ptr, ';'); /* now, find the next semicolon */
+      semiptr = strchr(ptr, ';'); /* now, find the next semicolon */
 
       if(!semiptr && *ptr)
         /* There are no more semicolons, but there's a final name=value pair
            coming up */
-        semiptr=strchr(ptr, '\0');
+        semiptr = strchr(ptr, '\0');
     } while(semiptr);
 
     if(co->maxage) {
-      co->expires =
-        curlx_strtoofft((*co->maxage=='\"')?
-                        &co->maxage[1]:&co->maxage[0], NULL, 10);
-      if(CURL_OFF_T_MAX - now < co->expires)
-        /* avoid overflow */
+      CURLofft offt;
+      offt = curlx_strtoofft((*co->maxage == '\"')?
+                             &co->maxage[1]:&co->maxage[0], NULL, 10,
+                             &co->expires);
+      if(offt == CURL_OFFT_FLOW)
+        /* overflow, used max value */
         co->expires = CURL_OFF_T_MAX;
-      else
-        co->expires += now;
+      else if(!offt) {
+        if(CURL_OFF_T_MAX - now < co->expires)
+          /* would overflow */
+          co->expires = CURL_OFF_T_MAX;
+        else
+          co->expires += now;
+      }
     }
     else if(co->expirestr) {
       /* Note that if the date couldn't get parsed for whatever reason,
@@ -619,7 +641,7 @@ Curl_cookie_add(struct Curl_easy *data,
     if(!badcookie && !co->domain) {
       if(domain) {
         /* no domain was given in the header line, set the default */
-        co->domain=strdup(domain);
+        co->domain = strdup(domain);
         if(!co->domain)
           badcookie = TRUE;
       }
@@ -639,11 +661,11 @@ Curl_cookie_add(struct Curl_easy *data,
       else
         endslash = memrchr(path, '/', (size_t)(queryp - path));
       if(endslash) {
-        size_t pathlen = (size_t)(endslash-path+1); /* include ending slash */
-        co->path=malloc(pathlen+1); /* one extra for the zero byte */
+        size_t pathlen = (size_t)(endslash-path + 1); /* include end slash */
+        co->path = malloc(pathlen + 1); /* one extra for the zero byte */
         if(co->path) {
           memcpy(co->path, path, pathlen);
-          co->path[pathlen]=0; /* zero terminate */
+          co->path[pathlen] = 0; /* zero terminate */
           co->spath = sanitize_cookie_path(co->path);
           if(!co->spath)
             badcookie = TRUE; /* out of memory bad */
@@ -653,8 +675,6 @@ Curl_cookie_add(struct Curl_easy *data,
       }
     }
 
-    free(what);
-
     if(badcookie || !co->name) {
       /* we didn't get a cookie name or a bad one,
          this is an illegal line, bail out */
@@ -668,7 +688,7 @@ Curl_cookie_add(struct Curl_easy *data,
        reading the odd netscape cookies-file format here */
     char *ptr;
     char *firstptr;
-    char *tok_buf=NULL;
+    char *tok_buf = NULL;
     int fields;
 
     /* IE introduced HTTP-only cookies to prevent XSS attacks. Cookies
@@ -689,19 +709,19 @@ Curl_cookie_add(struct Curl_easy *data,
       return NULL;
     }
     /* strip off the possible end-of-line characters */
-    ptr=strchr(lineptr, '\r');
+    ptr = strchr(lineptr, '\r');
     if(ptr)
-      *ptr=0; /* clear it */
-    ptr=strchr(lineptr, '\n');
+      *ptr = 0; /* clear it */
+    ptr = strchr(lineptr, '\n');
     if(ptr)
-      *ptr=0; /* clear it */
+      *ptr = 0; /* clear it */
 
-    firstptr=strtok_r(lineptr, "\t", &tok_buf); /* tokenize it on the TAB */
+    firstptr = strtok_r(lineptr, "\t", &tok_buf); /* tokenize it on the TAB */
 
     /* Now loop through the fields and init the struct we already have
        allocated */
-    for(ptr=firstptr, fields=0; ptr && !badcookie;
-        ptr=strtok_r(NULL, "\t", &tok_buf), fields++) {
+    for(ptr = firstptr, fields = 0; ptr && !badcookie;
+        ptr = strtok_r(NULL, "\t", &tok_buf), fields++) {
       switch(fields) {
       case 0:
         if(ptr[0]=='.') /* skip preceding dots */
@@ -712,7 +732,7 @@ Curl_cookie_add(struct Curl_easy *data,
         break;
       case 1:
         /* This field got its explanation on the 23rd of May 2001 by
-           Andrés García:
+           Andrés García:
 
            flag: A TRUE/FALSE value indicating if all machines within a given
            domain can access the variable. This value is set automatically by
@@ -726,7 +746,7 @@ Curl_cookie_add(struct Curl_easy *data,
       case 2:
         /* It turns out, that sometimes the file format allows the path
            field to remain not filled in, we try to detect this and work
-           around it! Andrés García made us aware of this... */
+           around it! Andrés García made us aware of this... */
         if(strcmp("TRUE", ptr) && strcmp("FALSE", ptr)) {
           /* only if the path doesn't look like a boolean option! */
           co->path = strdup(ptr);
@@ -753,7 +773,8 @@ Curl_cookie_add(struct Curl_easy *data,
         co->secure = strcasecompare(ptr, "TRUE")?TRUE:FALSE;
         break;
       case 4:
-        co->expires = curlx_strtoofft(ptr, NULL, 10);
+        if(curlx_strtoofft(ptr, NULL, 10, &co->expires))
+          badcookie = TRUE;
         break;
       case 5:
         co->name = strdup(ptr);
@@ -828,7 +849,7 @@ Curl_cookie_add(struct Curl_easy *data,
         if(strcasecompare(clist->domain, co->domain) &&
           (clist->tailmatch == co->tailmatch))
           /* The domains are identical */
-          replace_old=TRUE;
+          replace_old = TRUE;
       }
       else if(!clist->domain && !co->domain)
         replace_old = TRUE;
@@ -957,7 +978,7 @@ struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
 {
   struct CookieInfo *c;
   FILE *fp = NULL;
-  bool fromfile=TRUE;
+  bool fromfile = TRUE;
   char *line = NULL;
 
   if(NULL == inc) {
@@ -977,7 +998,7 @@ struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
 
   if(file && !strcmp(file, "-")) {
     fp = stdin;
-    fromfile=FALSE;
+    fromfile = FALSE;
   }
   else if(file && !*file) {
     /* points to a "" string */
@@ -998,12 +1019,12 @@ struct CookieInfo *Curl_cookie_init(struct Curl_easy *data,
     while(get_line(line, MAX_COOKIE_LINE, fp)) {
       if(checkprefix("Set-Cookie:", line)) {
         /* This is a cookie line, get it! */
-        lineptr=&line[11];
-        headerline=TRUE;
+        lineptr = &line[11];
+        headerline = TRUE;
       }
       else {
-        lineptr=line;
-        headerline=FALSE;
+        lineptr = line;
+        headerline = FALSE;
       }
       while(*lineptr && ISBLANK(*lineptr))
         lineptr++;
@@ -1113,7 +1134,7 @@ struct Cookie *Curl_cookie_getlist(struct CookieInfo *c,
   struct Cookie *newco;
   struct Cookie *co;
   time_t now = time(NULL);
-  struct Cookie *mainco=NULL;
+  struct Cookie *mainco = NULL;
   size_t matches = 0;
   bool is_ip;
 
@@ -1185,7 +1206,7 @@ struct Cookie *Curl_cookie_getlist(struct CookieInfo *c,
 
     co = mainco;
 
-    for(i=0; co; co = co->next)
+    for(i = 0; co; co = co->next)
       array[i++] = co;
 
     /* now sort the cookie pointers in path length order */
@@ -1194,8 +1215,8 @@ struct Cookie *Curl_cookie_getlist(struct CookieInfo *c,
     /* remake the linked list order according to the new order */
 
     mainco = array[0]; /* start here */
-    for(i=0; i<matches-1; i++)
-      array[i]->next = array[i+1];
+    for(i = 0; i<matches-1; i++)
+      array[i]->next = array[i + 1];
     array[matches-1]->next = NULL; /* terminate the list */
 
     free(array); /* remove the temporary data again */
@@ -1335,7 +1356,7 @@ static int cookie_output(struct CookieInfo *c, const char *dumphere)
 {
   struct Cookie *co;
   FILE *out;
-  bool use_stdout=FALSE;
+  bool use_stdout = FALSE;
   char *format_ptr;
 
   if((NULL == c) || (0 == c->numcookies))
@@ -1349,7 +1370,7 @@ static int cookie_output(struct CookieInfo *c, const char *dumphere)
   if(!strcmp("-", dumphere)) {
     /* use stdout */
     out = stdout;
-    use_stdout=TRUE;
+    use_stdout = TRUE;
   }
   else {
     out = fopen(dumphere, FOPEN_WRITETEXT);
@@ -1382,7 +1403,7 @@ static int cookie_output(struct CookieInfo *c, const char *dumphere)
   return 0;
 }
 
-struct curl_slist *Curl_cookie_list(struct Curl_easy *data)
+static struct curl_slist *cookie_list(struct Curl_easy *data)
 {
   struct curl_slist *list = NULL;
   struct curl_slist *beg;
@@ -1413,6 +1434,15 @@ struct curl_slist *Curl_cookie_list(struct Curl_easy *data)
   return list;
 }
 
+struct curl_slist *Curl_cookie_list(struct Curl_easy *data)
+{
+  struct curl_slist *list;
+  Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
+  list = cookie_list(data);
+  Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
+  return list;
+}
+
 void Curl_flush_cookies(struct Curl_easy *data, int cleanup)
 {
   if(data->set.str[STRING_COOKIEJAR]) {
diff --git a/lib/cookie.h b/lib/cookie.h
index a9a4578..cb50b71 100644
--- a/lib/cookie.h
+++ b/lib/cookie.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -62,13 +62,16 @@ struct CookieInfo {
    that comprise the cookie non-terminal in the syntax description of the
    Set-Cookie header)"
 
+   We allow max 5000 bytes cookie header. Max 4095 bytes length per cookie
+   name and value. Name + value may not exceed 4096 bytes.
+
 */
 #define MAX_COOKIE_LINE 5000
 #define MAX_COOKIE_LINE_TXT "4999"
 
-/* This is the maximum length of a cookie name we deal with: */
-#define MAX_NAME 1024
-#define MAX_NAME_TXT "1023"
+/* This is the maximum length of a cookie name or content we deal with: */
+#define MAX_NAME 4096
+#define MAX_NAME_TXT "4095"
 
 struct Curl_easy;
 /*
diff --git a/lib/curl_addrinfo.c b/lib/curl_addrinfo.c
index 1adf319..6eb28bb 100644
--- a/lib/curl_addrinfo.c
+++ b/lib/curl_addrinfo.c
@@ -286,7 +286,7 @@ Curl_he2ai(const struct hostent *he, int port)
 
   DEBUGASSERT((he->h_name != NULL) && (he->h_addr_list != NULL));
 
-  for(i=0; (curr = he->h_addr_list[i]) != NULL; i++) {
+  for(i = 0; (curr = he->h_addr_list[i]) != NULL; i++) {
 
     size_t ss_size;
 #ifdef ENABLE_IPV6
@@ -570,9 +570,9 @@ curl_dogetaddrinfo(const char *hostname,
                    int line, const char *source)
 {
 #ifdef USE_LWIPSOCK
-  int res=lwip_getaddrinfo(hostname, service, hints, result);
+  int res = lwip_getaddrinfo(hostname, service, hints, result);
 #else
-  int res=(getaddrinfo)(hostname, service, hints, result);
+  int res = (getaddrinfo)(hostname, service, hints, result);
 #endif
   if(0 == res)
     /* success */
diff --git a/lib/curl_config.h.cmake b/lib/curl_config.h.cmake
index 812d969..c80484f 100644
--- a/lib/curl_config.h.cmake
+++ b/lib/curl_config.h.cmake
@@ -51,9 +51,6 @@
 /* to disable RTSP */
 #cmakedefine CURL_DISABLE_RTSP 1
 
-/* to disable RTMP */
-#cmakedefine CURL_DISABLE_RTMP 1
-
 /* to disable SMB */
 #cmakedefine CURL_DISABLE_SMB 1
 
@@ -82,9 +79,6 @@
 /* when not building a shared library */
 #cmakedefine CURL_STATICLIB 1
 
-/* Set to explicitly specify we don't want to use thread-safe functions */
-#cmakedefine DISABLED_THREADSAFE 1
-
 /* your Entropy Gathering Daemon socket pathname */
 #cmakedefine EGD_SOCKET ${EGD_SOCKET}
 
@@ -894,6 +888,9 @@
 /* The size of `off_t', as computed by sizeof. */
 #cmakedefine SIZEOF_OFF_T ${SIZEOF_OFF_T}
 
+/* The size of `curl_off_t', as computed by sizeof. */
+#cmakedefine SIZEOF_CURL_OFF_T ${SIZEOF_CURL_OFF_T}
+
 /* The size of `size_t', as computed by sizeof. */
 #cmakedefine SIZEOF_SIZE_T ${SIZEOF_SIZE_T}
 
@@ -972,9 +969,6 @@
 /* Version number of package */
 #cmakedefine VERSION ${VERSION}
 
-/* Define to avoid automatic inclusion of winsock.h */
-#cmakedefine WIN32_LEAN_AND_MEAN 1
-
 /* Define to 1 if OS is AIX. */
 #ifndef _ALL_SOURCE
 #  undef _ALL_SOURCE
diff --git a/lib/curl_fnmatch.c b/lib/curl_fnmatch.c
index 46d3ada..631268b 100644
--- a/lib/curl_fnmatch.c
+++ b/lib/curl_fnmatch.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -151,7 +151,7 @@ static int setcharset(unsigned char **p, unsigned char *charset)
         (*p)++;
       }
       else if(c == '[') {
-        char c2 = *((*p)+1);
+        char c2 = *((*p) + 1);
         if(c2 == ':') { /* there has to be a keyword */
           (*p) += 2;
           if(parsekeyword(p, charset)) {
@@ -319,9 +319,9 @@ static int loop(const unsigned char *pattern, const unsigned char *string)
     switch(state) {
     case CURLFNM_LOOP_DEFAULT:
       if(*p == '*') {
-        while(*(p+1) == '*') /* eliminate multiple stars */
+        while(*(p + 1) == '*') /* eliminate multiple stars */
           p++;
-        if(*s == '\0' && *(p+1) == '\0')
+        if(*s == '\0' && *(p + 1) == '\0')
           return CURL_FNMATCH_MATCH;
         rc = loop(p + 1, s); /* *.txt matches .txt <=> .txt matches .txt */
         if(rc == CURL_FNMATCH_MATCH)
@@ -351,7 +351,7 @@ static int loop(const unsigned char *pattern, const unsigned char *string)
         p++;
       }
       else if(*p == '[') {
-        unsigned char *pp = p+1; /* cannot handle with pointer to register */
+        unsigned char *pp = p + 1; /* cannot handle with pointer to register */
         if(setcharset(&pp, charset)) {
           int found = FALSE;
           if(charset[(unsigned int)*s])
@@ -381,7 +381,7 @@ static int loop(const unsigned char *pattern, const unsigned char *string)
             found = !found;
 
           if(found) {
-            p = pp+1;
+            p = pp + 1;
             s++;
             memset(charset, 0, CURLFNM_CHSET_SIZE);
           }
diff --git a/lib/curl_ntlm_core.c b/lib/curl_ntlm_core.c
index aea5452..5154949 100644
--- a/lib/curl_ntlm_core.c
+++ b/lib/curl_ntlm_core.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -31,6 +31,25 @@
  * https://www.innovation.ch/java/ntlm.html
  */
 
+/* Please keep the SSL backend-specific #if branches in this order:
+
+   1. USE_OPENSSL
+   2. USE_GNUTLS_NETTLE
+   3. USE_GNUTLS
+   4. USE_NSS
+   5. USE_MBEDTLS
+   6. USE_DARWINSSL
+   7. USE_OS400CRYPTO
+   8. USE_WIN32_CRYPTO
+
+   This ensures that:
+   - the same SSL branch gets activated throughout this source
+     file even if multiple backends are enabled at the same time.
+   - OpenSSL and NSS have higher priority than Windows Crypt, due
+     to issues with the latter supporting NTLM2Session responses
+     in NTLM type-3 messages.
+ */
+
 #if !defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO)
 
 #ifdef USE_OPENSSL
@@ -76,14 +95,6 @@
 #  define MD5_DIGEST_LENGTH 16
 #  define MD4_DIGEST_LENGTH 16
 
-#elif defined(USE_MBEDTLS)
-
-#  include <mbedtls/des.h>
-#  include <mbedtls/md4.h>
-#  if !defined(MBEDTLS_MD4_C)
-#    include "curl_md4.h"
-#  endif
-
 #elif defined(USE_NSS)
 
 #  include <nss.h>
@@ -92,6 +103,14 @@
 #  include "curl_md4.h"
 #  define MD5_DIGEST_LENGTH MD5_LENGTH
 
+#elif defined(USE_MBEDTLS)
+
+#  include <mbedtls/des.h>
+#  include <mbedtls/md4.h>
+#  if !defined(MBEDTLS_MD4_C)
+#    include "curl_md4.h"
+#  endif
+
 #elif defined(USE_DARWINSSL)
 
 #  include <CommonCrypto/CommonCryptor.h>
@@ -196,26 +215,6 @@ static void setup_des_key(const unsigned char *key_56,
   gcry_cipher_setkey(*des, key, sizeof(key));
 }
 
-#elif defined(USE_MBEDTLS)
-
-static bool encrypt_des(const unsigned char *in, unsigned char *out,
-                        const unsigned char *key_56)
-{
-  mbedtls_des_context ctx;
-  char key[8];
-
-  /* Expand the 56-bit key to 64-bits */
-  extend_key_56_to_64(key_56, key);
-
-  /* Set the key parity to odd */
-  mbedtls_des_key_set_parity((unsigned char *) key);
-
-  /* Perform the encryption */
-  mbedtls_des_init(&ctx);
-  mbedtls_des_setkey_enc(&ctx, (unsigned char *) key);
-  return mbedtls_des_crypt_ecb(&ctx, in, out) == 0;
-}
-
 #elif defined(USE_NSS)
 
 /*
@@ -281,6 +280,26 @@ fail:
   return rv;
 }
 
+#elif defined(USE_MBEDTLS)
+
+static bool encrypt_des(const unsigned char *in, unsigned char *out,
+                        const unsigned char *key_56)
+{
+  mbedtls_des_context ctx;
+  char key[8];
+
+  /* Expand the 56-bit key to 64-bits */
+  extend_key_56_to_64(key_56, key);
+
+  /* Set the key parity to odd */
+  mbedtls_des_key_set_parity((unsigned char *) key);
+
+  /* Perform the encryption */
+  mbedtls_des_init(&ctx);
+  mbedtls_des_setkey_enc(&ctx, (unsigned char *) key);
+  return mbedtls_des_crypt_ecb(&ctx, in, out) == 0;
+}
+
 #elif defined(USE_DARWINSSL)
 
 static bool encrypt_des(const unsigned char *in, unsigned char *out,
@@ -428,7 +447,7 @@ void Curl_ntlm_core_lm_resp(const unsigned char *keys,
   setup_des_key(keys + 14, &des);
   gcry_cipher_encrypt(des, results + 16, 8, plaintext, 8);
   gcry_cipher_close(des);
-#elif defined(USE_MBEDTLS) || defined(USE_NSS) || defined(USE_DARWINSSL) \
+#elif defined(USE_NSS) || defined(USE_MBEDTLS) || defined(USE_DARWINSSL) \
   || defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO)
   encrypt_des(plaintext, results, keys);
   encrypt_des(plaintext, results + 8, keys + 7);
@@ -492,7 +511,7 @@ CURLcode Curl_ntlm_core_mk_lm_hash(struct Curl_easy *data,
     setup_des_key(pw + 7, &des);
     gcry_cipher_encrypt(des, lmbuffer + 8, 8, magic, 8);
     gcry_cipher_close(des);
-#elif defined(USE_MBEDTLS) || defined(USE_NSS) || defined(USE_DARWINSSL) \
+#elif defined(USE_NSS) || defined(USE_MBEDTLS) || defined(USE_DARWINSSL) \
   || defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO)
     encrypt_des(magic, lmbuffer, pw);
     encrypt_des(magic, lmbuffer + 8, pw + 7);
@@ -571,13 +590,18 @@ CURLcode Curl_ntlm_core_mk_nt_hash(struct Curl_easy *data,
     gcry_md_write(MD4pw, pw, 2 * len);
     memcpy(ntbuffer, gcry_md_read(MD4pw, 0), MD4_DIGEST_LENGTH);
     gcry_md_close(MD4pw);
-#elif defined(USE_NSS) || defined(USE_OS400CRYPTO) || \
-    (defined(USE_MBEDTLS) && !defined(MBEDTLS_MD4_C))
+#elif defined(USE_NSS)
     Curl_md4it(ntbuffer, pw, 2 * len);
 #elif defined(USE_MBEDTLS)
+#if defined(MBEDTLS_MD4_C)
     mbedtls_md4(pw, 2 * len, ntbuffer);
+#else
+    Curl_md4it(ntbuffer, pw, 2 * len);
+#endif
 #elif defined(USE_DARWINSSL)
     (void)CC_MD4(pw, (CC_LONG)(2 * len), ntbuffer);
+#elif defined(USE_OS400CRYPTO)
+    Curl_md4it(ntbuffer, pw, 2 * len);
 #elif defined(USE_WIN32_CRYPTO)
     HCRYPTPROV hprov;
     if(CryptAcquireContext(&hprov, NULL, NULL, PROV_RSA_FULL,
@@ -780,7 +804,7 @@ CURLcode  Curl_ntlm_core_mk_lmv2_resp(unsigned char *ntlmv2hash,
 
   /* Concatenate the HMAC MD5 output  with the client nonce */
   memcpy(lmresp, hmac_output, 16);
-  memcpy(lmresp+16, challenge_client, 8);
+  memcpy(lmresp + 16, challenge_client, 8);
 
   return result;
 }
diff --git a/lib/curl_ntlm_core.h b/lib/curl_ntlm_core.h
index 4a83d40..07ef5de 100644
--- a/lib/curl_ntlm_core.h
+++ b/lib/curl_ntlm_core.h
@@ -26,13 +26,19 @@
 
 #if defined(USE_NTLM)
 
+/* If NSS is the first available SSL backend (see order in curl_ntlm_core.c)
+   then it must be initialized to be used by NTLM. */
+#if !defined(USE_OPENSSL) && \
+    !defined(USE_GNUTLS_NETTLE) && \
+    !defined(USE_GNUTLS) && \
+    defined(USE_NSS)
+#define NTLM_NEEDS_NSS_INIT
+#endif
+
 #if !defined(USE_WINDOWS_SSPI) || defined(USE_WIN32_CRYPTO)
 
 #ifdef USE_OPENSSL
-#  if !defined(OPENSSL_VERSION_NUMBER) && \
-      !defined(HEADER_SSL_H) && !defined(HEADER_MD5_H)
-#    error "curl_ntlm_core.h shall not be included before OpenSSL headers."
-#  endif
+#  include <openssl/ssl.h>
 #endif
 
 /* Define USE_NTRESPONSES in order to make the type-3 message include
diff --git a/lib/curl_ntlm_wb.c b/lib/curl_ntlm_wb.c
index 9f5b87b..03f47a3 100644
--- a/lib/curl_ntlm_wb.c
+++ b/lib/curl_ntlm_wb.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -48,6 +48,7 @@
 #include "sendf.h"
 #include "select.h"
 #include "vauth/ntlm.h"
+#include "curl_ntlm_core.h"
 #include "curl_ntlm_wb.h"
 #include "url.h"
 #include "strerror.h"
@@ -123,7 +124,6 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
   struct passwd pw, *pw_res;
   char pwbuf[1024];
 #endif
-  int error;
 
   /* Return if communication with ntlm_auth already set up */
   if(conn->ntlm_auth_hlpr_socket != CURL_SOCKET_BAD ||
@@ -178,26 +178,23 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
     ntlm_auth = NTLM_WB_FILE;
 
   if(access(ntlm_auth, X_OK) != 0) {
-    error = ERRNO;
     failf(conn->data, "Could not access ntlm_auth: %s errno %d: %s",
-          ntlm_auth, error, Curl_strerror(conn, error));
+          ntlm_auth, errno, Curl_strerror(conn, errno));
     goto done;
   }
 
   if(socketpair(AF_UNIX, SOCK_STREAM, 0, sockfds)) {
-    error = ERRNO;
     failf(conn->data, "Could not open socket pair. errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     goto done;
   }
 
   child_pid = fork();
   if(child_pid == -1) {
-    error = ERRNO;
     sclose(sockfds[0]);
     sclose(sockfds[1]);
     failf(conn->data, "Could not fork. errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     goto done;
   }
   else if(!child_pid) {
@@ -208,16 +205,14 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
     /* Don't use sclose in the child since it fools the socket leak detector */
     sclose_nolog(sockfds[0]);
     if(dup2(sockfds[1], STDIN_FILENO) == -1) {
-      error = ERRNO;
       failf(conn->data, "Could not redirect child stdin. errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       exit(1);
     }
 
     if(dup2(sockfds[1], STDOUT_FILENO) == -1) {
-      error = ERRNO;
       failf(conn->data, "Could not redirect child stdout. errno %d: %s",
-            error, Curl_strerror(conn, error));
+            errno, Curl_strerror(conn, errno));
       exit(1);
     }
 
@@ -235,10 +230,9 @@ static CURLcode ntlm_wb_init(struct connectdata *conn, const char *userp)
             "--username", username,
             NULL);
 
-    error = ERRNO;
     sclose_nolog(sockfds[1]);
     failf(conn->data, "Could not execl(). errno %d: %s",
-          error, Curl_strerror(conn, error));
+          errno, Curl_strerror(conn, errno));
     exit(1);
   }
 
@@ -364,7 +358,7 @@ CURLcode Curl_output_ntlm_wb(struct connectdata *conn,
 
   /* not set means empty */
   if(!userp)
-    userp="";
+    userp = "";
 
   switch(ntlm->state) {
   case NTLMSTATE_TYPE1:
@@ -420,7 +414,7 @@ CURLcode Curl_output_ntlm_wb(struct connectdata *conn,
     /* connection is already authenticated,
      * don't send a header in future requests */
     free(*allocuserpwd);
-    *allocuserpwd=NULL;
+    *allocuserpwd = NULL;
     authp->done = TRUE;
     break;
   }
diff --git a/lib/curl_rtmp.c b/lib/curl_rtmp.c
index 87a6caf..9743064 100644
--- a/lib/curl_rtmp.c
+++ b/lib/curl_rtmp.c
@@ -74,6 +74,7 @@ const struct Curl_handler Curl_handler_rtmp = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMP,                            /* defport */
   CURLPROTO_RTMP,                       /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -94,6 +95,7 @@ const struct Curl_handler Curl_handler_rtmpt = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMPT,                           /* defport */
   CURLPROTO_RTMPT,                      /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -114,6 +116,7 @@ const struct Curl_handler Curl_handler_rtmpe = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMP,                            /* defport */
   CURLPROTO_RTMPE,                      /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -134,6 +137,7 @@ const struct Curl_handler Curl_handler_rtmpte = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMPT,                           /* defport */
   CURLPROTO_RTMPTE,                     /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -154,6 +158,7 @@ const struct Curl_handler Curl_handler_rtmps = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMPS,                           /* defport */
   CURLPROTO_RTMPS,                      /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -174,6 +179,7 @@ const struct Curl_handler Curl_handler_rtmpts = {
   ZERO_NULL,                            /* perform_getsock */
   rtmp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_RTMPS,                           /* defport */
   CURLPROTO_RTMPTS,                     /* protocol */
   PROTOPT_NONE                          /* flags*/
@@ -200,7 +206,7 @@ static CURLcode rtmp_connect(struct connectdata *conn, bool *done)
   RTMP *r = conn->proto.generic;
   SET_RCVTIMEO(tv, 10);
 
-  r->m_sb.sb_socket = conn->sock[FIRSTSOCKET];
+  r->m_sb.sb_socket = (int)conn->sock[FIRSTSOCKET];
 
   /* We have to know if it's a write before we send the
    * connect request packet
diff --git a/lib/curl_sasl.c b/lib/curl_sasl.c
index bd574b5..550433d 100644
--- a/lib/curl_sasl.c
+++ b/lib/curl_sasl.c
@@ -331,7 +331,8 @@ CURLcode Curl_sasl_start(struct SASL *sasl, struct connectdata *conn,
       sasl->authused = SASL_MECH_NTLM;
 
       if(force_ir || data->set.sasl_ir)
-        result = Curl_auth_create_ntlm_type1_message(conn->user, conn->passwd,
+        result = Curl_auth_create_ntlm_type1_message(data,
+                                                     conn->user, conn->passwd,
                                                      &conn->ntlm, &resp, &len);
       }
     else
@@ -493,7 +494,8 @@ CURLcode Curl_sasl_continue(struct SASL *sasl, struct connectdata *conn,
 #ifdef USE_NTLM
   case SASL_NTLM:
     /* Create the type-1 message */
-    result = Curl_auth_create_ntlm_type1_message(conn->user, conn->passwd,
+    result = Curl_auth_create_ntlm_type1_message(data,
+                                                 conn->user, conn->passwd,
                                                  &conn->ntlm, &resp, &len);
     newstate = SASL_NTLM_TYPE2MSG;
     break;
diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index d22997c..402ebc0 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -22,6 +22,10 @@
  *
  ***************************************************************************/
 
+#if defined(BUILDING_LIBCURL) && !defined(CURL_NO_OLDIES)
+#define CURL_NO_OLDIES
+#endif
+
 /*
  * Define WIN32 when build target is Win32 API
  */
@@ -31,6 +35,17 @@
 #define WIN32
 #endif
 
+#ifdef WIN32
+/*
+ * Don't include unneeded stuff in Windows headers to avoid compiler
+ * warnings and macro clashes.
+ * Make sure to define this macro before including any Windows headers.
+ */
+#  ifndef WIN32_LEAN_AND_MEAN
+#    define WIN32_LEAN_AND_MEAN
+#  endif
+#endif
+
 /*
  * Include configuration script results or hand-crafted
  * configuration file for platforms which lack config tool.
@@ -126,14 +141,7 @@
 
 #include <curl/curl.h>
 
-/*
- * Ensure that no one is using the old SIZEOF_CURL_OFF_T macro
- */
-
-#ifdef SIZEOF_CURL_OFF_T
-#  error "SIZEOF_CURL_OFF_T shall not be defined!"
-   Error Compilation_aborted_SIZEOF_CURL_OFF_T_shall_not_be_defined
-#endif
+#define CURL_SIZEOF_CURL_OFF_T SIZEOF_CURL_OFF_T
 
 /*
  * Disable other protocols when http is the only one desired.
@@ -170,9 +178,6 @@
 #  ifndef CURL_DISABLE_SMTP
 #    define CURL_DISABLE_SMTP
 #  endif
-#  ifndef CURL_DISABLE_RTMP
-#    define CURL_DISABLE_RTMP
-#  endif
 #  ifndef CURL_DISABLE_GOPHER
 #    define CURL_DISABLE_GOPHER
 #  endif
@@ -191,7 +196,7 @@
 
 /* ================================================================ */
 /* No system header file shall be included in this file before this */
-/* point. The only allowed ones are those included from curlbuild.h */
+/* point. The only allowed ones are those included from curl/system.h */
 /* ================================================================ */
 
 /*
@@ -237,9 +242,6 @@
 #  if defined(_UNICODE) && !defined(UNICODE)
 #    define UNICODE
 #  endif
-#  ifndef WIN32_LEAN_AND_MEAN
-#    define WIN32_LEAN_AND_MEAN
-#  endif
 #  include <windows.h>
 #  ifdef HAVE_WINSOCK2_H
 #    include <winsock2.h>
@@ -640,9 +642,8 @@ int netware_init(void);
 #endif
 #endif
 
-/* non-configure builds may define CURL_WANTS_CA_BUNDLE_ENV */
-#if defined(CURL_WANTS_CA_BUNDLE_ENV) && !defined(CURL_CA_BUNDLE)
-#define CURL_CA_BUNDLE getenv("CURL_CA_BUNDLE")
+#ifdef CURL_WANTS_CA_BUNDLE_ENV
+#error "No longer supported. Set CURLOPT_CAINFO at runtime instead."
 #endif
 
 /*
@@ -716,6 +717,7 @@ Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
 #if defined(WIN32) || defined(MSDOS)
 #define FOPEN_READTEXT "rt"
 #define FOPEN_WRITETEXT "wt"
+#define FOPEN_APPENDTEXT "at"
 #elif defined(__CYGWIN__)
 /* Cygwin has specific behavior we need to address when WIN32 is not defined.
 https://cygwin.com/cygwin-ug-net/using-textbinary.html
@@ -725,9 +727,11 @@ endings either CRLF or LF so 't' is appropriate.
 */
 #define FOPEN_READTEXT "rt"
 #define FOPEN_WRITETEXT "w"
+#define FOPEN_APPENDTEXT "a"
 #else
 #define FOPEN_READTEXT "r"
 #define FOPEN_WRITETEXT "w"
+#define FOPEN_APPENDTEXT "a"
 #endif
 
 /* WinSock destroys recv() buffer when send() failed.
diff --git a/lib/curl_setup_once.h b/lib/curl_setup_once.h
index 684187c..a5b542c 100644
--- a/lib/curl_setup_once.h
+++ b/lib/curl_setup_once.h
@@ -436,20 +436,6 @@ typedef int sig_atomic_t;
 
 
 /*
- * Macro ERRNO / SET_ERRNO() returns / sets the NOT *socket-related* errno
- * (or equivalent) on this platform to hide platform details to code using it.
- */
-
-#if defined(WIN32) && !defined(USE_LWIPSOCK)
-#define ERRNO         ((int)GetLastError())
-#define SET_ERRNO(x)  (SetLastError((DWORD)(x)))
-#else
-#define ERRNO         (errno)
-#define SET_ERRNO(x)  (errno = (x))
-#endif
-
-
-/*
  * Portable error number symbolic names defined to Winsock error codes.
  */
 
diff --git a/lib/curl_threads.c b/lib/curl_threads.c
index a78eff5..c1624a9 100644
--- a/lib/curl_threads.c
+++ b/lib/curl_threads.c
@@ -104,15 +104,22 @@ int Curl_thread_join(curl_thread_t *hnd)
 curl_thread_t Curl_thread_create(unsigned int (CURL_STDCALL *func) (void *),
                                  void *arg)
 {
+  curl_thread_t t;
 #ifdef _WIN32_WCE
-  return CreateThread(NULL, 0, func, arg, 0, NULL);
+  t = CreateThread(NULL, 0, func, arg, 0, NULL);
 #else
-  curl_thread_t t;
   t = (curl_thread_t)_beginthreadex(NULL, 0, func, arg, 0, NULL);
-  if((t == 0) || (t == (curl_thread_t)-1L))
+#endif
+  if((t == 0) || (t == LongToHandle(-1L))) {
+#ifdef _WIN32_WCE
+    DWORD gle = GetLastError();
+    errno = ((gle == ERROR_ACCESS_DENIED ||
+              gle == ERROR_NOT_ENOUGH_MEMORY) ?
+             EACCES : EINVAL);
+#endif
     return curl_thread_t_null;
+  }
   return t;
-#endif
 }
 
 void Curl_thread_destroy(curl_thread_t hnd)
diff --git a/lib/dict.c b/lib/dict.c
index 451ec38..4fc8552 100644
--- a/lib/dict.c
+++ b/lib/dict.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -85,6 +85,7 @@ const struct Curl_handler Curl_handler_dict = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_DICT,                            /* defport */
   CURLPROTO_DICT,                       /* protocol */
   PROTOPT_NONE | PROTOPT_NOURLQUERY      /* flags */
@@ -97,7 +98,7 @@ static char *unescape_word(struct Curl_easy *data, const char *inputbuff)
   char *ptr;
   size_t len;
   char ch;
-  int olen=0;
+  int olen = 0;
 
   CURLcode result = Curl_urldecode(data, inputbuff, 0, &newp, &len, FALSE);
   if(!newp || result)
@@ -116,7 +117,7 @@ static char *unescape_word(struct Curl_easy *data, const char *inputbuff)
       }
       dictp[olen++] = ch;
     }
-    dictp[olen]=0;
+    dictp[olen] = 0;
   }
   free(newp);
   return dictp;
@@ -131,8 +132,8 @@ static CURLcode dict_do(struct connectdata *conn, bool *done)
   char *strategy = NULL;
   char *nthdef = NULL; /* This is not part of the protocol, but required
                           by RFC 2229 */
-  CURLcode result=CURLE_OK;
-  struct Curl_easy *data=conn->data;
+  CURLcode result = CURLE_OK;
+  struct Curl_easy *data = conn->data;
   curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
 
   char *path = data->state.path;
@@ -167,7 +168,7 @@ static CURLcode dict_do(struct connectdata *conn, bool *done)
 
     if((word == NULL) || (*word == (char)0)) {
       infof(data, "lookup word is missing\n");
-      word=(char *)"default";
+      word = (char *)"default";
     }
     if((database == NULL) || (*database == (char)0)) {
       database = (char *)"!";
@@ -221,7 +222,7 @@ static CURLcode dict_do(struct connectdata *conn, bool *done)
 
     if((word == NULL) || (*word == (char)0)) {
       infof(data, "lookup word is missing\n");
-      word=(char *)"default";
+      word = (char *)"default";
     }
     if((database == NULL) || (*database == (char)0)) {
       database = (char *)"!";
diff --git a/lib/dotdot.c b/lib/dotdot.c
index 20603bc..cbb308d 100644
--- a/lib/dotdot.c
+++ b/lib/dotdot.c
@@ -55,7 +55,7 @@ char *Curl_dedotdotify(const char *input)
   size_t inlen = strlen(input);
   char *clone;
   size_t clen = inlen; /* the length of the cloned input */
-  char *out = malloc(inlen+1);
+  char *out = malloc(inlen + 1);
   char *outptr;
   char *orgclone;
   char *queryp;
@@ -92,25 +92,25 @@ char *Curl_dedotdotify(const char *input)
         remove that prefix from the input buffer; otherwise, */
 
     if(!strncmp("./", clone, 2)) {
-      clone+=2;
-      clen-=2;
+      clone += 2;
+      clen -= 2;
     }
     else if(!strncmp("../", clone, 3)) {
-      clone+=3;
-      clen-=3;
+      clone += 3;
+      clen -= 3;
     }
 
     /*  B.  if the input buffer begins with a prefix of "/./" or "/.", where
         "."  is a complete path segment, then replace that prefix with "/" in
         the input buffer; otherwise, */
     else if(!strncmp("/./", clone, 3)) {
-      clone+=2;
-      clen-=2;
+      clone += 2;
+      clen -= 2;
     }
     else if(!strcmp("/.", clone)) {
       clone[1]='/';
       clone++;
-      clen-=1;
+      clen -= 1;
     }
 
     /*  C.  if the input buffer begins with a prefix of "/../" or "/..", where
@@ -119,8 +119,8 @@ char *Curl_dedotdotify(const char *input)
         any) from the output buffer; otherwise, */
 
     else if(!strncmp("/../", clone, 4)) {
-      clone+=3;
-      clen-=3;
+      clone += 3;
+      clen -= 3;
       /* remove the last segment from the output buffer */
       while(outptr > out) {
         outptr--;
@@ -131,8 +131,8 @@ char *Curl_dedotdotify(const char *input)
     }
     else if(!strcmp("/..", clone)) {
       clone[2]='/';
-      clone+=2;
-      clen-=2;
+      clone += 2;
+      clen -= 2;
       /* remove the last segment from the output buffer */
       while(outptr > out) {
         outptr--;
@@ -146,8 +146,8 @@ char *Curl_dedotdotify(const char *input)
         that from the input buffer; otherwise, */
 
     else if(!strcmp(".", clone) || !strcmp("..", clone)) {
-      *clone=0;
-      *out=0;
+      *clone = 0;
+      *out = 0;
     }
 
     else {
@@ -172,7 +172,7 @@ char *Curl_dedotdotify(const char *input)
        from the correct index. */
     size_t oindex = queryp - orgclone;
     qlen = strlen(&input[oindex]);
-    memcpy(outptr, &input[oindex], qlen+1); /* include the ending zero byte */
+    memcpy(outptr, &input[oindex], qlen + 1); /* include the end zero byte */
   }
 
   free(orgclone);
diff --git a/lib/easy.c b/lib/easy.c
index 2b1ce9e..5328f9c 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -433,7 +433,7 @@ static int events_timer(struct Curl_multi *multi,    /* multi handle */
  */
 static int poll2cselect(int pollmask)
 {
-  int omask=0;
+  int omask = 0;
   if(pollmask & POLLIN)
     omask |= CURL_CSELECT_IN;
   if(pollmask & POLLOUT)
@@ -450,7 +450,7 @@ static int poll2cselect(int pollmask)
  */
 static short socketcb2poll(int pollmask)
 {
-  short omask=0;
+  short omask = 0;
   if(pollmask & CURL_POLL_IN)
     omask |= POLLIN;
   if(pollmask & CURL_POLL_OUT)
@@ -473,7 +473,7 @@ static int events_socket(struct Curl_easy *easy,      /* easy handle */
 {
   struct events *ev = userp;
   struct socketmonitor *m;
-  struct socketmonitor *prev=NULL;
+  struct socketmonitor *prev = NULL;
 
 #if defined(CURL_DISABLE_VERBOSE_STRINGS)
   (void) easy;
@@ -569,14 +569,14 @@ static CURLcode wait_or_timeout(struct Curl_multi *multi, struct events *ev)
     struct socketmonitor *m;
     struct pollfd *f;
     struct pollfd fds[4];
-    int numfds=0;
+    int numfds = 0;
     int pollrc;
     int i;
-    struct timeval before;
-    struct timeval after;
+    struct curltime before;
+    struct curltime after;
 
     /* populate the fds[] array */
-    for(m = ev->list, f=&fds[0]; m; m = m->next) {
+    for(m = ev->list, f = &fds[0]; m; m = m->next) {
       f->fd = m->socket.fd;
       f->events = m->socket.events;
       f->revents = 0;
@@ -653,7 +653,9 @@ static CURLcode wait_or_timeout(struct Curl_multi *multi, struct events *ev)
  */
 static CURLcode easy_events(struct Curl_multi *multi)
 {
-  struct events evs= {2, FALSE, 0, NULL, 0};
+  /* this struct is made static to allow it to be used after this function
+     returns and curl_multi_remove_handle() is called */
+  static struct events evs = {2, FALSE, 0, NULL, 0};
 
   /* if running event-based, do some further multi inits */
   events_setup(multi, &evs);
@@ -670,7 +672,7 @@ static CURLcode easy_transfer(struct Curl_multi *multi)
   bool done = FALSE;
   CURLMcode mcode = CURLM_OK;
   CURLcode result = CURLE_OK;
-  struct timeval before;
+  struct curltime before;
   int without_fds = 0;  /* count number of consecutive returns from
                            curl_multi_wait() without any filedescriptors */
 
@@ -683,7 +685,7 @@ static CURLcode easy_transfer(struct Curl_multi *multi)
 
     if(!mcode) {
       if(!rc) {
-        struct timeval after = curlx_tvnow();
+        struct curltime after = curlx_tvnow();
 
         /* If it returns without any filedescriptor instantly, we need to
            avoid busy-looping during periods where it has nothing particular
@@ -1025,13 +1027,13 @@ CURLcode curl_easy_pause(struct Curl_easy *data, int action)
     struct tempbuf writebuf[3]; /* there can only be three */
 
     /* copy the structs to allow for immediate re-pausing */
-    for(i=0; i < data->state.tempcount; i++) {
+    for(i = 0; i < data->state.tempcount; i++) {
       writebuf[i] = data->state.tempwrite[i];
       data->state.tempwrite[i].buf = NULL;
     }
     data->state.tempcount = 0;
 
-    for(i=0; i < count; i++) {
+    for(i = 0; i < count; i++) {
       /* even if one function returns error, this loops through and frees all
          buffers */
       if(!result)
diff --git a/lib/escape.c b/lib/escape.c
index 973aeb6..b7e2d32 100644
--- a/lib/escape.c
+++ b/lib/escape.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -84,14 +84,14 @@ char *curl_easy_escape(struct Curl_easy *data, const char *string,
   char *testing_ptr = NULL;
   unsigned char in; /* we need to treat the characters unsigned */
   size_t newlen;
-  size_t strindex=0;
+  size_t strindex = 0;
   size_t length;
   CURLcode result;
 
   if(inlength < 0)
     return NULL;
 
-  alloc = (inlength?(size_t)inlength:strlen(string))+1;
+  alloc = (inlength?(size_t)inlength:strlen(string)) + 1;
   newlen = alloc;
 
   ns = malloc(alloc);
@@ -104,7 +104,7 @@ char *curl_easy_escape(struct Curl_easy *data, const char *string,
 
     if(Curl_isunreserved(in))
       /* just copy this */
-      ns[strindex++]=in;
+      ns[strindex++] = in;
     else {
       /* encode it */
       newlen += 2; /* the size grows with two, since this'll become a %XX */
@@ -116,7 +116,7 @@ char *curl_easy_escape(struct Curl_easy *data, const char *string,
         ns = testing_ptr;
       }
 
-      result = Curl_convert_to_network(data, &in, 1);
+      result = Curl_convert_to_network(data, (char *)&in, 1);
       if(result) {
         /* Curl_convert_to_network calls failf if unsuccessful */
         free(ns);
@@ -125,11 +125,11 @@ char *curl_easy_escape(struct Curl_easy *data, const char *string,
 
       snprintf(&ns[strindex], 4, "%%%02X", in);
 
-      strindex+=3;
+      strindex += 3;
     }
     string++;
   }
-  ns[strindex]=0; /* terminate it */
+  ns[strindex] = 0; /* terminate it */
   return ns;
 }
 
@@ -148,10 +148,10 @@ CURLcode Curl_urldecode(struct Curl_easy *data,
                         char **ostring, size_t *olen,
                         bool reject_ctrl)
 {
-  size_t alloc = (length?length:strlen(string))+1;
+  size_t alloc = (length?length:strlen(string)) + 1;
   char *ns = malloc(alloc);
   unsigned char in;
-  size_t strindex=0;
+  size_t strindex = 0;
   unsigned long hex;
   CURLcode result;
 
@@ -173,15 +173,15 @@ CURLcode Curl_urldecode(struct Curl_easy *data,
 
       in = curlx_ultouc(hex); /* this long is never bigger than 255 anyway */
 
-      result = Curl_convert_from_network(data, &in, 1);
+      result = Curl_convert_from_network(data, (char *)&in, 1);
       if(result) {
         /* Curl_convert_from_network calls failf if unsuccessful */
         free(ns);
         return result;
       }
 
-      string+=2;
-      alloc-=2;
+      string += 2;
+      alloc -= 2;
     }
 
     if(reject_ctrl && (in < 0x20)) {
@@ -192,7 +192,7 @@ CURLcode Curl_urldecode(struct Curl_easy *data,
     ns[strindex++] = in;
     string++;
   }
-  ns[strindex]=0; /* terminate it */
+  ns[strindex] = 0; /* terminate it */
 
   if(olen)
     /* store output size */
diff --git a/lib/file.c b/lib/file.c
index c804d75..7cfdab1 100644
--- a/lib/file.c
+++ b/lib/file.c
@@ -108,6 +108,7 @@ const struct Curl_handler Curl_handler_file = {
   ZERO_NULL,                            /* perform_getsock */
   file_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   0,                                    /* defport */
   CURLPROTO_FILE,                       /* protocol */
   PROTOPT_NONETWORK | PROTOPT_NOURLQUERY /* flags */
@@ -132,37 +133,42 @@ static CURLcode file_setup_connection(struct connectdata *conn)
 static CURLcode file_range(struct connectdata *conn)
 {
   curl_off_t from, to;
-  curl_off_t totalsize=-1;
+  curl_off_t totalsize = -1;
   char *ptr;
   char *ptr2;
   struct Curl_easy *data = conn->data;
 
   if(data->state.use_range && data->state.range) {
-    from=curlx_strtoofft(data->state.range, &ptr, 0);
-    while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
+    CURLofft from_t;
+    CURLofft to_t;
+    from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
+    if(from_t == CURL_OFFT_FLOW)
+      return CURLE_RANGE_ERROR;
+    while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
       ptr++;
-    to=curlx_strtoofft(ptr, &ptr2, 0);
-    if(ptr == ptr2) {
-      /* we didn't get any digit */
-      to=-1;
-    }
-    if((-1 == to) && (from>=0)) {
+    to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
+    if(to_t == CURL_OFFT_FLOW)
+      return CURLE_RANGE_ERROR;
+    if((to_t == CURL_OFFT_INVAL) && !from_t) {
       /* X - */
       data->state.resume_from = from;
       DEBUGF(infof(data, "RANGE %" CURL_FORMAT_CURL_OFF_T " to end of file\n",
                    from));
     }
-    else if(from < 0) {
+    else if((from_t == CURL_OFFT_INVAL) && !to_t) {
       /* -Y */
-      data->req.maxdownload = -from;
-      data->state.resume_from = from;
+      data->req.maxdownload = to;
+      data->state.resume_from = -to;
       DEBUGF(infof(data, "RANGE the last %" CURL_FORMAT_CURL_OFF_T " bytes\n",
-                   -from));
+                   to));
     }
     else {
       /* X-Y */
       totalsize = to-from;
-      data->req.maxdownload = totalsize+1; /* include last byte */
+      if(totalsize == CURL_OFF_T_MAX)
+        /* this is too big to increase, so bail out */
+        return CURLE_RANGE_ERROR;
+      data->req.maxdownload = totalsize + 1; /* include last byte */
       data->state.resume_from = from;
       DEBUGF(infof(data, "RANGE from %" CURL_FORMAT_CURL_OFF_T
                    " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
@@ -225,7 +231,7 @@ static CURLcode file_connect(struct connectdata *conn, bool *done)
   }
 
   /* change path separators from '/' to '\\' for DOS, Windows and OS/2 */
-  for(i=0; i < real_path_len; ++i)
+  for(i = 0; i < real_path_len; ++i)
     if(actual_path[i] == '/')
       actual_path[i] = '\\';
     else if(!actual_path[i]) { /* binary zero */
@@ -427,9 +433,9 @@ static CURLcode file_do(struct connectdata *conn, bool *done)
   struct_stat statbuf; /* struct_stat instead of struct stat just to allow the
                           Windows version to have a different struct without
                           having to redefine the simple word 'stat' */
-  curl_off_t expected_size=0;
+  curl_off_t expected_size = 0;
   bool size_known;
-  bool fstated=FALSE;
+  bool fstated = FALSE;
   ssize_t nread;
   struct Curl_easy *data = conn->data;
   char *buf = data->state.buffer;
@@ -500,7 +506,7 @@ static CURLcode file_do(struct connectdata *conn, bool *done)
              tm->tm_hour,
              tm->tm_min,
              tm->tm_sec);
-    result = Curl_client_write(conn, CLIENTWRITE_BOTH, buf, 0);
+    result = Curl_client_write(conn, CLIENTWRITE_BOTH, header, 0);
     if(!result)
       /* set the file size to make it available post transfer */
       Curl_pgrsSetDownloadSize(data, expected_size);
diff --git a/lib/formdata.c b/lib/formdata.c
index e48a627..3568ac5 100644
--- a/lib/formdata.c
+++ b/lib/formdata.c
@@ -32,6 +32,8 @@
 
 #include "urldata.h" /* for struct Curl_easy */
 #include "formdata.h"
+#include "mime.h"
+#include "non-ascii.h"
 #include "vtls/vtls.h"
 #include "strcase.h"
 #include "sendf.h"
@@ -42,13 +44,6 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
-#ifndef HAVE_BASENAME
-static char *Curl_basename(char *path);
-#define basename(x)  Curl_basename((x))
-#endif
-
-static size_t readfromfile(struct Form *form, char *buffer, size_t size);
-static CURLcode formboundary(struct Curl_easy *data, char *buffer, size_t len);
 
 /* What kind of Content-Type to use on un-specified files with unrecognized
    extensions. */
@@ -197,7 +192,7 @@ static const char *ContentTypeForFilename(const char *filename,
     contenttype = HTTPPOST_CONTENTTYPE_DEFAULT;
 
   if(filename) { /* in case a NULL was passed in */
-    for(i=0; i<sizeof(ctts)/sizeof(ctts[0]); i++) {
+    for(i = 0; i<sizeof(ctts)/sizeof(ctts[0]); i++) {
       if(strlen(filename) >= strlen(ctts[i].extension)) {
         if(strcasecompare(filename +
                           strlen(filename) - strlen(ctts[i].extension),
@@ -272,7 +267,7 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
   struct curl_httppost *post = NULL;
   CURLformoption option;
   struct curl_forms *forms = NULL;
-  char *array_value=NULL; /* value read from an array */
+  char *array_value = NULL; /* value read from an array */
 
   /* This is a state variable, that if TRUE means that we're parsing an
      array that we got passed to us. If FALSE we're parsing the input
@@ -641,15 +636,26 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
         }
         form->contenttype_alloc = TRUE;
       }
+      if(form->name && form->namelength) {
+        /* Name should not contain nul bytes. */
+        size_t i;
+        for(i = 0; i < form->namelength; i++)
+          if(!form->name[i]) {
+            return_value = CURL_FORMADD_NULL;
+            break;
+          }
+        if(return_value != CURL_FORMADD_OK)
+          break;
+      }
       if(!(form->flags & HTTPPOST_PTRNAME) &&
          (form == first_form) ) {
         /* Note that there's small risk that form->name is NULL here if the
            app passed in a bad combo, so we better check for that first. */
         if(form->name) {
-          /* copy name (without strdup; possibly contains null characters) */
+          /* copy name (without strdup; possibly not nul-terminated) */
           form->name = Curl_memdup(form->name, form->namelength?
                                    form->namelength:
-                                   strlen(form->name)+1);
+                                   strlen(form->name) + 1);
         }
         if(!form->name) {
           return_value = CURL_FORMADD_MEMORY;
@@ -663,7 +669,7 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
         /* copy value (without strdup; possibly contains null characters) */
         size_t clen  = (size_t) form->contentslength;
         if(!clen)
-          clen = strlen(form->value)+1;
+          clen = strlen(form->value) + 1;
 
         form->value = Curl_memdup(form->value, clen);
 
@@ -746,211 +752,6 @@ CURLFORMcode curl_formadd(struct curl_httppost **httppost,
   return result;
 }
 
-#ifdef __VMS
-#include <fabdef.h>
-/*
- * get_vms_file_size does what it takes to get the real size of the file
- *
- * For fixed files, find out the size of the EOF block and adjust.
- *
- * For all others, have to read the entire file in, discarding the contents.
- * Most posted text files will be small, and binary files like zlib archives
- * and CD/DVD images should be either a STREAM_LF format or a fixed format.
- *
- */
-curl_off_t VmsRealFileSize(const char *name,
-                           const struct_stat *stat_buf)
-{
-  char buffer[8192];
-  curl_off_t count;
-  int ret_stat;
-  FILE * file;
-
-  file = fopen(name, FOPEN_READTEXT); /* VMS */
-  if(file == NULL)
-    return 0;
-
-  count = 0;
-  ret_stat = 1;
-  while(ret_stat > 0) {
-    ret_stat = fread(buffer, 1, sizeof(buffer), file);
-    if(ret_stat != 0)
-      count += ret_stat;
-  }
-  fclose(file);
-
-  return count;
-}
-
-/*
- *
- *  VmsSpecialSize checks to see if the stat st_size can be trusted and
- *  if not to call a routine to get the correct size.
- *
- */
-static curl_off_t VmsSpecialSize(const char *name,
-                                 const struct_stat *stat_buf)
-{
-  switch(stat_buf->st_fab_rfm) {
-  case FAB$C_VAR:
-  case FAB$C_VFC:
-    return VmsRealFileSize(name, stat_buf);
-    break;
-  default:
-    return stat_buf->st_size;
-  }
-}
-
-#endif
-
-#ifndef __VMS
-#define filesize(name, stat_data) (stat_data.st_size)
-#else
-    /* Getting the expected file size needs help on VMS */
-#define filesize(name, stat_data) VmsSpecialSize(name, &stat_data)
-#endif
-
-/*
- * AddFormData() adds a chunk of data to the FormData linked list.
- *
- * size is incremented by the chunk length, unless it is NULL
- */
-static CURLcode AddFormData(struct FormData **formp,
-                            enum formtype type,
-                            const void *line,
-                            curl_off_t length,
-                            curl_off_t *size)
-{
-  struct FormData *newform;
-  char *alloc2 = NULL;
-  CURLcode result = CURLE_OK;
-  if(length < 0 || (size && *size < 0))
-    return CURLE_BAD_FUNCTION_ARGUMENT;
-
-  newform = malloc(sizeof(struct FormData));
-  if(!newform)
-    return CURLE_OUT_OF_MEMORY;
-  newform->next = NULL;
-
-  if(type <= FORM_CONTENT) {
-    /* we make it easier for plain strings: */
-    if(!length)
-      length = strlen((char *)line);
-#if (SIZEOF_SIZE_T < CURL_SIZEOF_CURL_OFF_T)
-    else if(length >= (curl_off_t)(size_t)-1) {
-      result = CURLE_BAD_FUNCTION_ARGUMENT;
-      goto error;
-    }
-#endif
-    if(type != FORM_DATAMEM) {
-      newform->line = malloc((size_t)length+1);
-      if(!newform->line) {
-        result = CURLE_OUT_OF_MEMORY;
-        goto error;
-      }
-      alloc2 = newform->line;
-      memcpy(newform->line, line, (size_t)length);
-
-      /* zero terminate for easier debugging */
-      newform->line[(size_t)length]=0;
-    }
-    else {
-      newform->line = (char *)line;
-      type = FORM_DATA; /* in all other aspects this is just FORM_DATA */
-    }
-    newform->length = (size_t)length;
-  }
-  else
-    /* For callbacks and files we don't have any actual data so we just keep a
-       pointer to whatever this points to */
-    newform->line = (char *)line;
-
-  newform->type = type;
-
-  if(size) {
-    if(type != FORM_FILE)
-      /* for static content as well as callback data we add the size given
-         as input argument */
-      *size += length;
-    else {
-      /* Since this is a file to be uploaded here, add the size of the actual
-         file */
-      if(strcmp("-", newform->line)) {
-        struct_stat file;
-        if(!stat(newform->line, &file) && !S_ISDIR(file.st_mode))
-          *size += filesize(newform->line, file);
-        else {
-          result = CURLE_BAD_FUNCTION_ARGUMENT;
-          goto error;
-        }
-      }
-    }
-  }
-
-  if(*formp) {
-    (*formp)->next = newform;
-    *formp = newform;
-  }
-  else
-    *formp = newform;
-
-  return CURLE_OK;
-  error:
-  if(newform)
-    free(newform);
-  if(alloc2)
-    free(alloc2);
-  return result;
-}
-
-/*
- * AddFormDataf() adds printf()-style formatted data to the formdata chain.
- */
-
-static CURLcode AddFormDataf(struct FormData **formp,
-                             curl_off_t *size,
-                             const char *fmt, ...)
-{
-  char *s;
-  CURLcode result;
-  va_list ap;
-  va_start(ap, fmt);
-  s = curl_mvaprintf(fmt, ap);
-  va_end(ap);
-
-  if(!s)
-    return CURLE_OUT_OF_MEMORY;
-
-  result = AddFormData(formp, FORM_DATAMEM, s, 0, size);
-  if(result)
-    free(s);
-
-  return result;
-}
-
-/*
- * Curl_formclean() is used from http.c, this cleans a built FormData linked
- * list
- */
-void Curl_formclean(struct FormData **form_ptr)
-{
-  struct FormData *next, *form;
-
-  form = *form_ptr;
-  if(!form)
-    return;
-
-  do {
-    next=form->next;  /* the following form line */
-    if(form->type <= FORM_CONTENT)
-      free(form->line); /* free the line */
-    free(form);       /* free the struct */
-    form = next;
-  } while(form); /* continue */
-
-  *form_ptr = NULL;
-}
-
 /*
  * curl_formget()
  * Serialize a curl_httppost struct.
@@ -962,42 +763,34 @@ int curl_formget(struct curl_httppost *form, void *arg,
                  curl_formget_callback append)
 {
   CURLcode result;
-  curl_off_t size;
-  struct FormData *data, *ptr;
+  curl_mimepart toppart;
 
-  result = Curl_getformdata(NULL, &data, form, NULL, &size);
-  if(result)
-    return (int)result;
-
-  for(ptr = data; ptr; ptr = ptr->next) {
-    if((ptr->type == FORM_FILE) || (ptr->type == FORM_CALLBACK)) {
-      char buffer[8192];
-      size_t nread;
-      struct Form temp;
-
-      Curl_FormInit(&temp, ptr);
-
-      do {
-        nread = readfromfile(&temp, buffer, sizeof(buffer));
-        if((nread == (size_t) -1) ||
-           (nread > sizeof(buffer)) ||
-           (nread != append(arg, buffer, nread))) {
-          if(temp.fp)
-            fclose(temp.fp);
-          Curl_formclean(&data);
-          return -1;
-        }
-      } while(nread);
-    }
-    else {
-      if(ptr->length != append(arg, ptr->line, ptr->length)) {
-        Curl_formclean(&data);
-        return -1;
-      }
+  Curl_mime_initpart(&toppart, NULL); /* default form is empty */
+  result = Curl_getformdata(NULL, &toppart, form, NULL);
+  if(!result)
+    result = Curl_mime_prepare_headers(&toppart, "multipart/form-data",
+                                       NULL, MIMESTRATEGY_FORM);
+
+  while(!result) {
+    char buffer[8192];
+    size_t nread = Curl_mime_read(buffer, 1, sizeof buffer, &toppart);
+
+    if(!nread)
+      break;
+
+    switch(nread) {
+    default:
+      if(append(arg, buffer, nread) != nread)
+        result = CURLE_READ_ERROR;
+      break;
+    case CURL_READFUNC_ABORT:
+    case CURL_READFUNC_PAUSE:
+      break;
     }
   }
-  Curl_formclean(&data);
-  return 0;
+
+  Curl_mime_cleanpart(&toppart);
+  return (int) result;
 }
 
 /*
@@ -1013,7 +806,7 @@ void curl_formfree(struct curl_httppost *form)
     return;
 
   do {
-    next=form->next;  /* the following form line */
+    next = form->next;  /* the following form line */
 
     /* recurse to sub-contents */
     curl_formfree(form->more);
@@ -1031,118 +824,29 @@ void curl_formfree(struct curl_httppost *form)
   } while(form); /* continue */
 }
 
-#ifndef HAVE_BASENAME
-/*
-  (Quote from The Open Group Base Specifications Issue 6 IEEE Std 1003.1, 2004
-  Edition)
-
-  The basename() function shall take the pathname pointed to by path and
-  return a pointer to the final component of the pathname, deleting any
-  trailing '/' characters.
-
-  If the string pointed to by path consists entirely of the '/' character,
-  basename() shall return a pointer to the string "/". If the string pointed
-  to by path is exactly "//", it is implementation-defined whether '/' or "//"
-  is returned.
 
-  If path is a null pointer or points to an empty string, basename() shall
-  return a pointer to the string ".".
-
-  The basename() function may modify the string pointed to by path, and may
-  return a pointer to static storage that may then be overwritten by a
-  subsequent call to basename().
-
-  The basename() function need not be reentrant. A function that is not
-  required to be reentrant is not required to be thread-safe.
-
-*/
-static char *Curl_basename(char *path)
+/* Set mime part name, taking care of non nul-terminated name string. */
+static CURLcode setname(curl_mimepart *part, const char *name, size_t len)
 {
-  /* Ignore all the details above for now and make a quick and simple
-     implementaion here */
-  char *s1;
-  char *s2;
-
-  s1=strrchr(path, '/');
-  s2=strrchr(path, '\\');
+  char *zname;
+  CURLcode res;
 
-  if(s1 && s2) {
-    path = (s1 > s2? s1 : s2)+1;
-  }
-  else if(s1)
-    path = s1 + 1;
-  else if(s2)
-    path = s2 + 1;
-
-  return path;
-}
-#endif
-
-static char *strippath(const char *fullfile)
-{
-  char *filename;
-  char *base;
-  filename = strdup(fullfile); /* duplicate since basename() may ruin the
-                                  buffer it works on */
-  if(!filename)
-    return NULL;
-  base = strdup(basename(filename));
-
-  free(filename); /* free temporary buffer */
-
-  return base; /* returns an allocated string or NULL ! */
-}
-
-static CURLcode formdata_add_filename(const struct curl_httppost *file,
-                                      struct FormData **form,
-                                      curl_off_t *size)
-{
-  CURLcode result = CURLE_OK;
-  char *filename = file->showfilename;
-  char *filebasename = NULL;
-  char *filename_escaped = NULL;
-
-  if(!filename) {
-    filebasename = strippath(file->contents);
-    if(!filebasename)
-      return CURLE_OUT_OF_MEMORY;
-    filename = filebasename;
-  }
-
-  if(strchr(filename, '\\') || strchr(filename, '"')) {
-    char *p0, *p1;
-
-    /* filename need be escaped */
-    filename_escaped = malloc(strlen(filename)*2+1);
-    if(!filename_escaped) {
-      free(filebasename);
-      return CURLE_OUT_OF_MEMORY;
-    }
-    p0 = filename_escaped;
-    p1 = filename;
-    while(*p1) {
-      if(*p1 == '\\' || *p1 == '"')
-        *p0++ = '\\';
-      *p0++ = *p1++;
-    }
-    *p0 = '\0';
-    filename = filename_escaped;
-  }
-  result = AddFormDataf(form, size,
-                        "; filename=\"%s\"",
-                        filename);
-  free(filename_escaped);
-  free(filebasename);
-  return result;
+  if(!name || !len)
+    return curl_mime_name(part, name);
+  zname = malloc(len + 1);
+  if(!zname)
+    return CURLE_OUT_OF_MEMORY;
+  memcpy(zname, name, len);
+  zname[len] = '\0';
+  res = curl_mime_name(part, zname);
+  free(zname);
+  return res;
 }
 
 /*
- * Curl_getformdata() converts a linked list of "meta data" into a complete
- * (possibly huge) multipart formdata. The input list is in 'post', while the
- * output resulting linked lists gets stored in '*finalform'. *sizep will get
- * the total size of the whole POST.
- * A multipart/form_data content-type is built, unless a custom content-type
- * is passed in 'custom_content_type'.
+ * Curl_getformdata() converts a linked list of "meta data" into a mime
+ * structure. The input list is in 'post', while the output is stored in
+ * mime part at '*finalform'.
  *
  * This function will not do a failf() for the potential memory failures but
  * should for all other errors it spots. Just note that this function MAY get
@@ -1150,422 +854,123 @@ static CURLcode formdata_add_filename(const struct curl_httppost *file,
  */
 
 CURLcode Curl_getformdata(struct Curl_easy *data,
-                          struct FormData **finalform,
+                          curl_mimepart *finalform,
                           struct curl_httppost *post,
-                          const char *custom_content_type,
-                          curl_off_t *sizep)
+                          curl_read_callback fread_func)
 {
-  struct FormData *form = NULL;
-  struct FormData *firstform;
-  struct curl_httppost *file;
   CURLcode result = CURLE_OK;
-  curl_off_t size = 0; /* support potentially ENORMOUS formposts */
-  char fileboundary[42];
-  struct curl_slist *curList;
-  char boundary[42];
+  curl_mime *form = NULL;
+  curl_mime *multipart;
+  curl_mimepart *part;
+  struct curl_httppost *file;
 
-  *finalform = NULL; /* default form is empty */
+  Curl_mime_cleanpart(finalform); /* default form is empty */
 
   if(!post)
     return result; /* no input => no output! */
 
-  result = formboundary(data, boundary, sizeof(boundary));
-  if(result)
-    return result;
-
-  /* Make the first line of the output */
-  result = AddFormDataf(&form, NULL,
-                        "%s; boundary=%s\r\n",
-                        custom_content_type?custom_content_type:
-                        "Content-Type: multipart/form-data",
-                        boundary);
-
-  if(result) {
-    return result;
-  }
-  /* we DO NOT include that line in the total size of the POST, since it'll be
-     part of the header! */
-
-  firstform = form;
-
-  do {
-
-    if(size) {
-      result = AddFormDataf(&form, &size, "\r\n");
-      if(result)
-        break;
-    }
-
-    /* boundary */
-    result = AddFormDataf(&form, &size, "--%s\r\n", boundary);
-    if(result)
-      break;
-
-    /* Maybe later this should be disabled when a custom_content_type is
-       passed, since Content-Disposition is not meaningful for all multipart
-       types.
-    */
-    result = AddFormDataf(&form, &size,
-                          "Content-Disposition: form-data; name=\"");
-    if(result)
-      break;
-
-    result = AddFormData(&form, FORM_DATA, post->name, post->namelength,
-                         &size);
-    if(result)
-      break;
+  form = curl_mime_init(data);
+  if(!form)
+    result = CURLE_OUT_OF_MEMORY;
 
-    result = AddFormDataf(&form, &size, "\"");
-    if(result)
-      break;
+  if(!result)
+    result = curl_mime_subparts(finalform, form);
 
+  /* Process each top part. */
+  for(; !result && post; post = post->next) {
+    /* If we have more than a file here, create a mime subpart and fill it. */
+    multipart = form;
     if(post->more) {
-      /* If used, this is a link to more file names, we must then do
-         the magic to include several files with the same field name */
-
-      result = formboundary(data, fileboundary, sizeof(fileboundary));
-      if(result) {
-        break;
+      part = curl_mime_addpart(form);
+      if(!part)
+        result = CURLE_OUT_OF_MEMORY;
+      if(!result)
+        result = setname(part, post->name, post->namelength);
+      if(!result) {
+        multipart = curl_mime_init(data);
+        if(!multipart)
+          result = CURLE_OUT_OF_MEMORY;
       }
-
-      result = AddFormDataf(&form, &size,
-                            "\r\nContent-Type: multipart/mixed;"
-                            " boundary=%s\r\n",
-                            fileboundary);
-      if(result)
-        break;
+      if(!result)
+        result = curl_mime_subparts(part, multipart);
     }
 
-    file = post;
-
-    do {
-
-      /* If 'showfilename' is set, that is a faked name passed on to us
-         to use to in the formpost. If that is not set, the actually used
-         local file name should be added. */
-
-      if(post->more) {
-        /* if multiple-file */
-        result = AddFormDataf(&form, &size,
-                              "\r\n--%s\r\nContent-Disposition: "
-                              "attachment",
-                              fileboundary);
-        if(result)
-          break;
-        result = formdata_add_filename(file, &form, &size);
-        if(result)
-          break;
-      }
-      else if(post->flags & (HTTPPOST_FILENAME|HTTPPOST_BUFFER|
-                             HTTPPOST_CALLBACK)) {
-        /* it should be noted that for the HTTPPOST_FILENAME and
-           HTTPPOST_CALLBACK cases the ->showfilename struct member is always
-           assigned at this point */
-        if(post->showfilename || (post->flags & HTTPPOST_FILENAME)) {
-          result = formdata_add_filename(post, &form, &size);
-        }
+    /* Generate all the part contents. */
+    for(file = post; !result && file; file = file->more) {
+      /* Create the part. */
+      part = curl_mime_addpart(multipart);
+      if(!part)
+        result = CURLE_OUT_OF_MEMORY;
 
-        if(result)
-          break;
-      }
+      /* Set the headers. */
+      if(!result)
+        result = curl_mime_headers(part, file->contentheader, 0);
 
-      if(file->contenttype) {
-        /* we have a specified type */
-        result = AddFormDataf(&form, &size,
-                              "\r\nContent-Type: %s",
-                              file->contenttype);
-        if(result)
-          break;
-      }
+      /* Set the content type. */
+      if(!result &&file->contenttype)
+        result = curl_mime_type(part, file->contenttype);
 
-      curList = file->contentheader;
-      while(curList) {
-        /* Process the additional headers specified for this form */
-        result = AddFormDataf(&form, &size, "\r\n%s", curList->data);
-        if(result)
-          break;
-        curList = curList->next;
-      }
-      if(result)
-        break;
+      /* Set field name. */
+      if(!result && !post->more)
+        result = setname(part, post->name, post->namelength);
 
-      result = AddFormDataf(&form, &size, "\r\n\r\n");
-      if(result)
-        break;
+      /* Process contents. */
+      if(!result) {
+        curl_off_t clen = post->contentslength;
 
-      if((post->flags & HTTPPOST_FILENAME) ||
-         (post->flags & HTTPPOST_READFILE)) {
-        /* we should include the contents from the specified file */
-        FILE *fileread;
-
-        fileread = !strcmp("-", file->contents)?
-          stdin:fopen(file->contents, "rb"); /* binary read for win32  */
-
-        /*
-         * VMS: This only allows for stream files on VMS.  Stream files are
-         * OK, as are FIXED & VAR files WITHOUT implied CC For implied CC,
-         * every record needs to have a \n appended & 1 added to SIZE
-         */
-
-        if(fileread) {
-          if(fileread != stdin) {
-            /* close the file */
-            fclose(fileread);
-            /* add the file name only - for later reading from this */
-            result = AddFormData(&form, FORM_FILE, file->contents, 0, &size);
-          }
-          else {
-            /* When uploading from stdin, we can't know the size of the file,
-             * thus must read the full file as before. We *could* use chunked
-             * transfer-encoding, but that only works for HTTP 1.1 and we
-             * can't be sure we work with such a server.
-             */
-            size_t nread;
-            char buffer[512];
-            while((nread = fread(buffer, 1, sizeof(buffer), fileread)) != 0) {
-              result = AddFormData(&form, FORM_CONTENT, buffer, nread, &size);
-              if(result || feof(fileread) || ferror(fileread))
-                break;
-            }
+        if(post->flags & CURL_HTTPPOST_LARGE)
+          clen = post->contentlen;
+        if(!clen)
+          clen = -1;
+
+        if(post->flags & (HTTPPOST_FILENAME | HTTPPOST_READFILE)) {
+          if(!strcmp(file->contents, "-")) {
+            /* There are a few cases where the code below won't work; in
+               particular, freopen(stdin) by the caller is not guaranteed
+               to result as expected. This feature has been kept for backward
+               compatibility: use of "-" pseudo file name should be avoided. */
+            result = curl_mime_data_cb(part, (curl_off_t) -1,
+                                       (curl_read_callback) fread,
+                                       (curl_seek_callback) fseek,
+                                       NULL, (void *) stdin);
           }
+          else
+            result = curl_mime_filedata(part, file->contents);
+          if(!result && (post->flags & HTTPPOST_READFILE))
+            result = curl_mime_filename(part, NULL);
         }
+        else if(post->flags & HTTPPOST_BUFFER)
+          result = curl_mime_data(part, post->buffer,
+                                  post->bufferlength? post->bufferlength: -1);
+        else if(post->flags & HTTPPOST_CALLBACK)
+          /* the contents should be read with the callback and the size is set
+             with the contentslength */
+          result = curl_mime_data_cb(part, clen,
+                                     fread_func, NULL, NULL, post->userp);
         else {
-          if(data)
-            failf(data, "couldn't open file \"%s\"", file->contents);
-          *finalform = NULL;
-          result = CURLE_READ_ERROR;
+          result = curl_mime_data(part, post->contents, (ssize_t) clen);
+#ifdef CURL_DOES_CONVERSIONS
+          /* Convert textual contents now. */
+          if(!result && data && part->datasize)
+            result = Curl_convert_to_network(data, part->data, part->datasize);
+#endif
         }
       }
-      else if(post->flags & HTTPPOST_BUFFER)
-        /* include contents of buffer */
-        result = AddFormData(&form, FORM_CONTENT, post->buffer,
-                             post->bufferlength, &size);
-      else if(post->flags & HTTPPOST_CALLBACK)
-        /* the contents should be read with the callback and the size is set
-           with the contentslength */
-        result = AddFormData(&form, FORM_CALLBACK, post->userp,
-                             post->flags&CURL_HTTPPOST_LARGE?
-                             post->contentlen:post->contentslength, &size);
-      else
-        /* include the contents we got */
-        result = AddFormData(&form, FORM_CONTENT, post->contents,
-                             post->flags&CURL_HTTPPOST_LARGE?
-                             post->contentlen:post->contentslength, &size);
-      file = file->more;
-    } while(file && !result); /* for each specified file for this field */
-
-    if(result)
-      break;
 
-    if(post->more) {
-      /* this was a multiple-file inclusion, make a termination file
-         boundary: */
-      result = AddFormDataf(&form, &size,
-                           "\r\n--%s--",
-                           fileboundary);
-      if(result)
-        break;
+      /* Set fake file name. */
+      if(!result && post->showfilename)
+        if(post->more || (post->flags & (HTTPPOST_FILENAME | HTTPPOST_BUFFER |
+                                        HTTPPOST_CALLBACK)))
+          result = curl_mime_filename(part, post->showfilename);
     }
-    post = post->next;
-  } while(post); /* for each field */
-
-  /* end-boundary for everything */
-  if(!result)
-    result = AddFormDataf(&form, &size, "\r\n--%s--\r\n", boundary);
-
-  if(result) {
-    Curl_formclean(&firstform);
-    return result;
   }
 
-  *sizep = size;
-  *finalform = firstform;
+  if(result)
+    Curl_mime_cleanpart(finalform);
 
   return result;
 }
 
-/*
- * Curl_FormInit() inits the struct 'form' points to with the 'formdata'
- * and resets the 'sent' counter.
- */
-int Curl_FormInit(struct Form *form, struct FormData *formdata)
-{
-  if(!formdata)
-    return 1; /* error */
-
-  form->data = formdata;
-  form->sent = 0;
-  form->fp = NULL;
-  form->fread_func = ZERO_NULL;
-
-  return 0;
-}
-
-#ifndef __VMS
-# define fopen_read fopen
-#else
-  /*
-   * vmsfopenread
-   *
-   * For upload to work as expected on VMS, different optional
-   * parameters must be added to the fopen command based on
-   * record format of the file.
-   *
-   */
-# define fopen_read vmsfopenread
-static FILE * vmsfopenread(const char *file, const char *mode)
-{
-  struct_stat statbuf;
-  int result;
-
-  result = stat(file, &statbuf);
-
-  switch(statbuf.st_fab_rfm) {
-  case FAB$C_VAR:
-  case FAB$C_VFC:
-  case FAB$C_STMCR:
-    return fopen(file, FOPEN_READTEXT); /* VMS */
-    break;
-  default:
-    return fopen(file, FOPEN_READTEXT, "rfm=stmlf", "ctx=stm");
-  }
-}
-#endif
-
-/*
- * readfromfile()
- *
- * The read callback that this function may use can return a value larger than
- * 'size' (which then this function returns) that indicates a problem and it
- * must be properly dealt with
- */
-static size_t readfromfile(struct Form *form, char *buffer,
-                           size_t size)
-{
-  size_t nread;
-  bool callback = (form->data->type == FORM_CALLBACK)?TRUE:FALSE;
-
-  if(callback) {
-    if(form->fread_func == ZERO_NULL)
-      return 0;
-    nread = form->fread_func(buffer, 1, size, form->data->line);
-  }
-  else {
-    if(!form->fp) {
-      /* this file hasn't yet been opened */
-      form->fp = fopen_read(form->data->line, "rb"); /* b is for binary */
-      if(!form->fp)
-        return (size_t)-1; /* failure */
-    }
-    nread = fread(buffer, 1, size, form->fp);
-  }
-  if(!nread) {
-    /* this is the last chunk from the file, move on */
-    if(form->fp) {
-      fclose(form->fp);
-      form->fp = NULL;
-    }
-    form->data = form->data->next;
-  }
-
-  return nread;
-}
-
-/*
- * Curl_FormReader() is the fread() emulation function that will be used to
- * deliver the formdata to the transfer loop and then sent away to the peer.
- */
-size_t Curl_FormReader(char *buffer,
-                       size_t size,
-                       size_t nitems,
-                       FILE *mydata)
-{
-  struct Form *form;
-  size_t wantedsize;
-  size_t gotsize = 0;
-
-  form=(struct Form *)mydata;
-
-  wantedsize = size * nitems;
-
-  if(!form->data)
-    return 0; /* nothing, error, empty */
-
-  if((form->data->type == FORM_FILE) ||
-     (form->data->type == FORM_CALLBACK)) {
-    gotsize = readfromfile(form, buffer, wantedsize);
-
-    if(gotsize)
-      /* If positive or -1, return. If zero, continue! */
-      return gotsize;
-  }
-  do {
-
-    if((form->data->length - form->sent) > wantedsize - gotsize) {
-
-      memcpy(buffer + gotsize, form->data->line + form->sent,
-             wantedsize - gotsize);
-
-      form->sent += wantedsize-gotsize;
-
-      return wantedsize;
-    }
-
-    memcpy(buffer+gotsize,
-           form->data->line + form->sent,
-           (form->data->length - form->sent) );
-    gotsize += form->data->length - form->sent;
-
-    form->sent = 0;
-
-    form->data = form->data->next; /* advance */
-
-  } while(form->data && (form->data->type < FORM_CALLBACK));
-  /* If we got an empty line and we have more data, we proceed to the next
-     line immediately to avoid returning zero before we've reached the end. */
-
-  return gotsize;
-}
-
-/*
- * Curl_formpostheader() returns the first line of the formpost, the
- * request-header part (which is not part of the request-body like the rest of
- * the post).
- */
-char *Curl_formpostheader(void *formp, size_t *len)
-{
-  char *header;
-  struct Form *form=(struct Form *)formp;
-
-  if(!form->data)
-    return NULL; /* nothing, ERROR! */
-
-  header = form->data->line;
-  *len = form->data->length;
-
-  form->data = form->data->next; /* advance */
-
-  return header;
-}
-
-/*
- * formboundary() creates a suitable boundary string and returns an allocated
- * one.
- */
-static CURLcode formboundary(struct Curl_easy *data,
-                             char *buffer, size_t buflen)
-{
-  /* 24 dashes and 16 hexadecimal digits makes 64 bit (18446744073709551615)
-     combinations */
-  if(buflen < 41)
-    return CURLE_BAD_FUNCTION_ARGUMENT;
-
-  memset(buffer, '-', 24);
-  Curl_rand_hex(data, (unsigned char *)&buffer[24], 17);
-
-  return CURLE_OK;
-}
-
 #else  /* CURL_DISABLE_HTTP */
 CURLFORMcode curl_formadd(struct curl_httppost **httppost,
                           struct curl_httppost **last_post,
diff --git a/lib/formdata.h b/lib/formdata.h
index 69629f6..1246c2b 100644
--- a/lib/formdata.h
+++ b/lib/formdata.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -22,32 +22,6 @@
  *
  ***************************************************************************/
 
-enum formtype {
-  FORM_DATAMEM, /* already allocated FORM_DATA memory */
-  FORM_DATA,    /* form metadata (convert to network encoding if necessary) */
-  FORM_CONTENT, /* form content  (never convert) */
-  FORM_CALLBACK, /* 'line' points to the custom pointer we pass to the callback
-                  */
-  FORM_FILE     /* 'line' points to a file name we should read from
-                   to create the form data (never convert) */
-};
-
-/* plain and simple linked list with lines to send */
-struct FormData {
-  struct FormData *next;
-  enum formtype type;
-  char *line;
-  size_t length;
-};
-
-struct Form {
-  struct FormData *data; /* current form line to send */
-  size_t sent;           /* number of bytes of the current line that has
-                            already been sent in a previous invoke */
-  FILE *fp;              /* file to read from */
-  curl_read_callback fread_func; /* fread callback pointer */
-};
-
 /* used by FormAdd for temporary storage */
 typedef struct FormInfo {
   char *name;
@@ -69,31 +43,9 @@ typedef struct FormInfo {
   struct FormInfo *more;
 } FormInfo;
 
-int Curl_FormInit(struct Form *form, struct FormData *formdata);
-
 CURLcode Curl_getformdata(struct Curl_easy *data,
-                          struct FormData **,
+                          curl_mimepart *,
                           struct curl_httppost *post,
-                          const char *custom_contenttype,
-                          curl_off_t *size);
-
-/* fread() emulation */
-size_t Curl_FormReader(char *buffer,
-                       size_t size,
-                       size_t nitems,
-                       FILE *mydata);
-
-/*
- * Curl_formpostheader() returns the first line of the formpost, the
- * request-header part (which is not part of the request-body like the rest of
- * the post).
- */
-char *Curl_formpostheader(void *formp, size_t *len);
-
-char *Curl_FormBoundary(void);
-
-void Curl_formclean(struct FormData **);
-
-CURLcode Curl_formconvert(struct Curl_easy *, struct FormData *);
+                          curl_read_callback fread_func);
 
 #endif /* HEADER_CURL_FORMDATA_H */
diff --git a/lib/ftp.c b/lib/ftp.c
index 5edec37..54ba405 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -178,10 +178,11 @@ const struct Curl_handler Curl_handler_ftp = {
   ZERO_NULL,                       /* perform_getsock */
   ftp_disconnect,                  /* disconnect */
   ZERO_NULL,                       /* readwrite */
+  ZERO_NULL,                       /* connection_check */
   PORT_FTP,                        /* defport */
   CURLPROTO_FTP,                   /* protocol */
-  PROTOPT_DUAL | PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD
-  | PROTOPT_NOURLQUERY /* flags */
+  PROTOPT_DUAL | PROTOPT_CLOSEACTION | PROTOPT_NEEDSPWD |
+  PROTOPT_NOURLQUERY | PROTOPT_PROXY_AS_HTTP /* flags */
 };
 
 
@@ -205,6 +206,7 @@ const struct Curl_handler Curl_handler_ftps = {
   ZERO_NULL,                       /* perform_getsock */
   ftp_disconnect,                  /* disconnect */
   ZERO_NULL,                       /* readwrite */
+  ZERO_NULL,                       /* connection_check */
   PORT_FTPS,                       /* defport */
   CURLPROTO_FTPS,                  /* protocol */
   PROTOPT_SSL | PROTOPT_DUAL | PROTOPT_CLOSEACTION |
@@ -212,59 +214,6 @@ const struct Curl_handler Curl_handler_ftps = {
 };
 #endif
 
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed FTP protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_ftp_proxy = {
-  "FTP",                                /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_FTP,                             /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed FTPS protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_ftps_proxy = {
-  "FTPS",                               /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_FTPS,                            /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-#endif
-#endif
-
 static void close_secondarysocket(struct connectdata *conn)
 {
   if(CURL_SOCKET_BAD != conn->sock[SECONDARYSOCKET]) {
@@ -272,7 +221,6 @@ static void close_secondarysocket(struct connectdata *conn)
     conn->sock[SECONDARYSOCKET] = CURL_SOCKET_BAD;
   }
   conn->bits.tcpconnect[SECONDARYSOCKET] = FALSE;
-  conn->tunnel_state[SECONDARYSOCKET] = TUNNEL_INIT;
 }
 
 /*
@@ -291,9 +239,9 @@ static void freedirs(struct ftp_conn *ftpc)
 {
   int i;
   if(ftpc->dirs) {
-    for(i=0; i < ftpc->dirdepth; i++) {
+    for(i = 0; i < ftpc->dirdepth; i++) {
       free(ftpc->dirs[i]);
-      ftpc->dirs[i]=NULL;
+      ftpc->dirs[i] = NULL;
     }
     free(ftpc->dirs);
     ftpc->dirs = NULL;
@@ -340,7 +288,7 @@ static CURLcode AcceptServerConnect(struct connectdata *conn)
   if(0 == getsockname(sock, (struct sockaddr *) &add, &size)) {
     size = sizeof(add);
 
-    s=accept(sock, (struct sockaddr *) &add, &size);
+    s = accept(sock, (struct sockaddr *) &add, &size);
   }
   Curl_closesocket(conn, sock); /* close the first socket */
 
@@ -388,7 +336,7 @@ static time_t ftp_timeleft_accept(struct Curl_easy *data)
 {
   time_t timeout_ms = DEFAULT_ACCEPT_TIMEOUT;
   time_t other;
-  struct timeval now;
+  struct curltime now;
 
   if(data->set.accepttimeout > 0)
     timeout_ms = data->set.accepttimeout;
@@ -509,7 +457,7 @@ static CURLcode InitiateTransfer(struct connectdata *conn)
   }
 
   if(conn->proto.ftpc.state_saved == FTP_STOR) {
-    *(ftp->bytecountp)=0;
+    *(ftp->bytecountp) = 0;
 
     /* When we know we're uploading a specified file, we can get the file
        size prior to the actual upload. */
@@ -644,7 +592,7 @@ static CURLcode ftp_readresp(curl_socket_t sockfd,
 #endif
 
   /* store the latest code for later retrieval */
-  data->info.httpcode=code;
+  data->info.httpcode = code;
 
   if(ftpcode)
     *ftpcode = code;
@@ -692,8 +640,8 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct pingpong *pp = &ftpc->pp;
   size_t nread;
-  int cache_skip=0;
-  int value_to_be_ignored=0;
+  int cache_skip = 0;
+  int value_to_be_ignored = 0;
 
   if(ftpcode)
     *ftpcode = 0; /* 0 for errors */
@@ -701,13 +649,13 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
     /* make the pointer point to something for the rest of this function */
     ftpcode = &value_to_be_ignored;
 
-  *nreadp=0;
+  *nreadp = 0;
 
   while(!*ftpcode && !result) {
     /* check and reset timeout value every lap */
     timeout = Curl_pp_state_timeout(pp);
 
-    if(timeout <=0) {
+    if(timeout <= 0) {
       failf(data, "FTP response timeout");
       return CURLE_OPERATION_TIMEDOUT; /* already too little time */
     }
@@ -765,7 +713,7 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
     else
       /* when we got data or there is no cache left, we reset the cache skip
          counter */
-      cache_skip=0;
+      cache_skip = 0;
 
     *nreadp += nread;
 
@@ -900,7 +848,7 @@ static int ftp_domore_getsock(struct connectdata *conn, curl_socket_t *socks,
       int i;
       /* PORT is used to tell the server to connect to us, and during that we
          don't do happy eyeballs, but we do if we connect to the server */
-      for(s=1, i=0; i<2; i++) {
+      for(s = 1, i = 0; i<2; i++) {
         if(conn->tempsock[i] != CURL_SOCKET_BAD) {
           socks[s] = conn->tempsock[i];
           bits |= GETSOCK_WRITESOCK(s++);
@@ -937,23 +885,26 @@ static CURLcode ftp_state_cwd(struct connectdata *conn)
     /* count3 is set to allow a MKD to fail once. In the case when first CWD
        fails and then MKD fails (due to another session raced it to create the
        dir) this then allows for a second try to CWD to it */
-    ftpc->count3 = (conn->data->set.ftp_create_missing_dirs==2)?1:0;
+    ftpc->count3 = (conn->data->set.ftp_create_missing_dirs == 2)?1:0;
 
-    if(conn->bits.reuse && ftpc->entrypath) {
+    if((conn->data->set.ftp_filemethod == FTPFILE_NOCWD) && !ftpc->cwdcount)
+      /* No CWD necessary */
+      result = ftp_state_mdtm(conn);
+    else if(conn->bits.reuse && ftpc->entrypath) {
       /* This is a re-used connection. Since we change directory to where the
          transfer is taking place, we must first get back to the original dir
          where we ended up after login: */
-      ftpc->count1 = 0; /* we count this as the first path, then we add one
-                          for all upcoming ones in the ftp->dirs[] array */
+      ftpc->cwdcount = 0; /* we count this as the first path, then we add one
+                             for all upcoming ones in the ftp->dirs[] array */
       PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->entrypath);
       state(conn, FTP_CWD);
     }
     else {
       if(ftpc->dirdepth) {
-        ftpc->count1 = 1;
+        ftpc->cwdcount = 1;
         /* issue the first CWD, the rest is sent when the CWD responses are
            received... */
-        PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->dirs[ftpc->count1 -1]);
+        PPSENDF(&conn->proto.ftpc.pp, "CWD %s", ftpc->dirs[ftpc->cwdcount -1]);
         state(conn, FTP_CWD);
       }
       else {
@@ -977,15 +928,15 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
 {
   CURLcode result = CURLE_OK;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
-  struct Curl_easy *data=conn->data;
-  curl_socket_t portsock= CURL_SOCKET_BAD;
+  struct Curl_easy *data = conn->data;
+  curl_socket_t portsock = CURL_SOCKET_BAD;
   char myhost[256] = "";
 
   struct Curl_sockaddr_storage ss;
   Curl_addrinfo *res, *ai;
   curl_socklen_t sslen;
   char hbuf[NI_MAXHOST];
-  struct sockaddr *sa=(struct sockaddr *)&ss;
+  struct sockaddr *sa = (struct sockaddr *)&ss;
   struct sockaddr_in * const sa4 = (void *)sa;
 #ifdef ENABLE_IPV6
   struct sockaddr_in6 * const sa6 = (void *)sa;
@@ -996,7 +947,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
   int error;
   char *host = NULL;
   char *string_ftpport = data->set.str[STRING_FTPPORT];
-  struct Curl_dns_entry *h=NULL;
+  struct Curl_dns_entry *h = NULL;
   unsigned short port_min = 0;
   unsigned short port_max = 0;
   unsigned short port;
@@ -1024,7 +975,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
     char *port_start = NULL;
     char *port_sep = NULL;
 
-    addr = calloc(addrlen+1, 1);
+    addr = calloc(addrlen + 1, 1);
     if(!addr)
       return CURLE_OUT_OF_MEMORY;
 
@@ -1067,7 +1018,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
     if(ip_end != NULL) {
       port_start = strchr(ip_end, ':');
       if(port_start) {
-        port_min = curlx_ultous(strtoul(port_start+1, NULL, 10));
+        port_min = curlx_ultous(strtoul(port_start + 1, NULL, 10));
         port_sep = strchr(port_start, '-');
         if(port_sep) {
           port_max = curlx_ultous(strtoul(port_sep + 1, NULL, 10));
@@ -1311,7 +1262,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
       /* translate x.x.x.x to x,x,x,x */
       while(source && *source) {
         if(*source == '.')
-          *dest=',';
+          *dest = ',';
         else
           *dest = *source;
         dest++;
@@ -1518,12 +1469,12 @@ static CURLcode ftp_state_list(struct connectdata *conn)
       return CURLE_OUT_OF_MEMORY;
 
     /* Check if path does not end with /, as then we cut off the file part */
-    if(lstArg[strlen(lstArg) - 1] != '/')  {
+    if(lstArg[strlen(lstArg) - 1] != '/') {
 
       /* chop off the file part if format is dir/dir/file */
       slashPos = strrchr(lstArg, '/');
       if(slashPos)
-        *(slashPos+1) = '\0';
+        *(slashPos + 1) = '\0';
     }
   }
 
@@ -1671,7 +1622,7 @@ static CURLcode ftp_state_ul_setup(struct connectdata *conn,
     }
 
     if(seekerr != CURL_SEEKFUNC_OK) {
-      curl_off_t passed=0;
+      curl_off_t passed = 0;
       if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
         failf(data, "Could not seek stream");
         return CURLE_FTP_COULDNT_USE_REST;
@@ -1733,7 +1684,7 @@ static CURLcode ftp_state_quote(struct connectdata *conn,
   struct Curl_easy *data = conn->data;
   struct FTP *ftp = data->req.protop;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
-  bool quote=FALSE;
+  bool quote = FALSE;
   struct curl_slist *item;
 
   switch(instate) {
@@ -1870,11 +1821,11 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
 {
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   CURLcode result;
-  struct Curl_easy *data=conn->data;
-  struct Curl_dns_entry *addr=NULL;
+  struct Curl_easy *data = conn->data;
+  struct Curl_dns_entry *addr = NULL;
   int rc;
   unsigned short connectport; /* the local port connect() should use! */
-  char *str=&data->state.buffer[4];  /* start on the first letter */
+  char *str = &data->state.buffer[4];  /* start on the first letter */
 
   /* if we come here again, make sure the former name is cleared */
   Curl_safefree(ftpc->newhost);
@@ -1898,9 +1849,9 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
 
         /* The four separators should be identical, or else this is an oddly
            formatted reply and we bail out immediately. */
-        for(i=1; i<4; i++) {
+        for(i = 1; i<4; i++) {
           if(separator[i] != sep1) {
-            ptr=NULL; /* set to NULL to signal error */
+            ptr = NULL; /* set to NULL to signal error */
             break;
           }
         }
@@ -1916,7 +1867,7 @@ static CURLcode ftp_state_pasv_resp(struct connectdata *conn,
         }
       }
       else
-        ptr=NULL;
+        ptr = NULL;
     }
     if(!ptr) {
       failf(data, "Weirdly formatted EPSV reply");
@@ -2090,7 +2041,7 @@ static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
                                     int ftpcode)
 {
   CURLcode result = CURLE_OK;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   struct FTP *ftp = data->req.protop;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
 
@@ -2104,7 +2055,7 @@ static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
                      &year, &month, &day, &hour, &minute, &second)) {
         /* we have a time, reformat it */
         char timebuf[24];
-        time_t secs=time(NULL);
+        time_t secs = time(NULL);
 
         snprintf(timebuf, sizeof(timebuf),
                  "%04d%02d%02d %02d:%02d:%02d GMT",
@@ -2120,7 +2071,7 @@ static CURLcode ftp_state_mdtm_resp(struct connectdata *conn,
       if(data->set.opt_no_body &&
          ftpc->file &&
          data->set.get_filetime &&
-         (data->info.filetime>=0) ) {
+         (data->info.filetime >= 0) ) {
         char headerbuf[128];
         time_t filetime = (time_t)data->info.filetime;
         struct tm buffer;
@@ -2196,7 +2147,7 @@ static CURLcode ftp_state_type_resp(struct connectdata *conn,
                                     ftpstate instate)
 {
   CURLcode result = CURLE_OK;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
 
   if(ftpcode/100 != 2) {
     /* "sasserftpd" and "(u)r(x)bot ftpd" both responds with 226 after a
@@ -2225,7 +2176,7 @@ static CURLcode ftp_state_retr(struct connectdata *conn,
                                          curl_off_t filesize)
 {
   CURLcode result = CURLE_OK;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   struct FTP *ftp = data->req.protop;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
 
@@ -2308,12 +2259,14 @@ static CURLcode ftp_state_size_resp(struct connectdata *conn,
                                     ftpstate instate)
 {
   CURLcode result = CURLE_OK;
-  struct Curl_easy *data=conn->data;
-  curl_off_t filesize;
+  struct Curl_easy *data = conn->data;
+  curl_off_t filesize = -1;
   char *buf = data->state.buffer;
 
   /* get the size from the ascii string: */
-  filesize = (ftpcode == 213)?curlx_strtoofft(buf+4, NULL, 0):-1;
+  if(ftpcode == 213)
+    /* ignores parsing errors, which will make the size remain unknown */
+    (void)curlx_strtoofft(buf + 4, NULL, 0, &filesize);
 
   if(instate == FTP_SIZE) {
 #ifdef CURL_FTP_HTTPSTYLE_HEAD
@@ -2383,7 +2336,7 @@ static CURLcode ftp_state_stor_resp(struct connectdata *conn,
   CURLcode result = CURLE_OK;
   struct Curl_easy *data = conn->data;
 
-  if(ftpcode>=400) {
+  if(ftpcode >= 400) {
     failf(data, "Failed FTP upload: %0d", ftpcode);
     state(conn, FTP_STOP);
     /* oops, we never close the sockets! */
@@ -2441,7 +2394,7 @@ static CURLcode ftp_state_get_resp(struct connectdata *conn,
       E:
       125 Data connection already open; Transfer starting. */
 
-    curl_off_t size=-1; /* default unknown size */
+    curl_off_t size = -1; /* default unknown size */
 
 
     /*
@@ -2465,9 +2418,9 @@ static CURLcode ftp_state_get_resp(struct connectdata *conn,
        * Example D above makes this parsing a little tricky */
       char *bytes;
       char *buf = data->state.buffer;
-      bytes=strstr(buf, " bytes");
+      bytes = strstr(buf, " bytes");
       if(bytes--) {
-        long in=(long)(bytes-buf);
+        long in = (long)(bytes-buf);
         /* this is a hint there is size information in there! ;-) */
         while(--in) {
           /* scan for the left parenthesis and break there */
@@ -2475,7 +2428,7 @@ static CURLcode ftp_state_get_resp(struct connectdata *conn,
             break;
           /* skip only digits */
           if(!ISDIGIT(*bytes)) {
-            bytes=NULL;
+            bytes = NULL;
             break;
           }
           /* one more estep backwards */
@@ -2484,7 +2437,7 @@ static CURLcode ftp_state_get_resp(struct connectdata *conn,
         /* if we have nothing but digits: */
         if(bytes++) {
           /* get the number! */
-          size = curlx_strtoofft(bytes, NULL, 0);
+          (void)curlx_strtoofft(bytes, NULL, 0, &size);
         }
       }
     }
@@ -2647,7 +2600,7 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
 {
   CURLcode result;
   curl_socket_t sock = conn->sock[FIRSTSOCKET];
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   int ftpcode;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct pingpong *pp = &ftpc->pp;
@@ -2699,7 +2652,7 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
         /* We don't have a SSL/TLS connection yet, but FTPS is
            requested. Try a FTPS connection now */
 
-        ftpc->count3=0;
+        ftpc->count3 = 0;
         switch(data->set.ftpsslauth) {
         case CURLFTPAUTH_DEFAULT:
         case CURLFTPAUTH_SSL:
@@ -2822,10 +2775,11 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
 
     case FTP_PWD:
       if(ftpcode == 257) {
-        char *ptr=&data->state.buffer[4];  /* start on the first letter */
+        char *ptr = &data->state.buffer[4];  /* start on the first letter */
         const size_t buf_size = data->set.buffer_size;
         char *dir;
         char *store;
+        bool entry_extracted = FALSE;
 
         dir = malloc(nread + 1);
         if(!dir)
@@ -2857,7 +2811,7 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
               }
               else {
                 /* end of path */
-                *store = '\0'; /* zero terminate */
+                entry_extracted = TRUE;
                 break; /* get out of this loop */
               }
             }
@@ -2866,7 +2820,9 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
             store++;
             ptr++;
           }
-
+          *store = '\0'; /* zero terminate */
+        }
+        if(entry_extracted) {
           /* If the path name does not look like an absolute path (i.e.: it
              does not start with a '/'), we probably need some server-dependent
              adjustments. For example, this is the case when connecting to
@@ -2913,7 +2869,7 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
 
     case FTP_SYST:
       if(ftpcode == 215) {
-        char *ptr=&data->state.buffer[4];  /* start on the first letter */
+        char *ptr = &data->state.buffer[4];  /* start on the first letter */
         char *os;
         char *store;
 
@@ -2988,10 +2944,10 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
       if(ftpcode/100 != 2) {
         /* failure to CWD there */
         if(conn->data->set.ftp_create_missing_dirs &&
-           ftpc->count1 && !ftpc->count2) {
+           ftpc->cwdcount && !ftpc->count2) {
           /* try making it */
           ftpc->count2++; /* counter to prevent CWD-MKD loops */
-          PPSENDF(&ftpc->pp, "MKD %s", ftpc->dirs[ftpc->count1 - 1]);
+          PPSENDF(&ftpc->pp, "MKD %s", ftpc->dirs[ftpc->cwdcount - 1]);
           state(conn, FTP_MKD);
         }
         else {
@@ -3004,10 +2960,10 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
       }
       else {
         /* success */
-        ftpc->count2=0;
-        if(++ftpc->count1 <= ftpc->dirdepth) {
+        ftpc->count2 = 0;
+        if(++ftpc->cwdcount <= ftpc->dirdepth) {
           /* send next CWD */
-          PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
+          PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->cwdcount - 1]);
         }
         else {
           result = ftp_state_mdtm(conn);
@@ -3025,7 +2981,7 @@ static CURLcode ftp_statemach_act(struct connectdata *conn)
       }
       state(conn, FTP_CWD);
       /* send CWD */
-      PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->count1 - 1]);
+      PPSENDF(&ftpc->pp, "CWD %s", ftpc->dirs[ftpc->cwdcount - 1]);
       break;
 
     case FTP_MDTM:
@@ -3244,15 +3200,16 @@ static CURLcode ftp_done(struct connectdata *conn, CURLcode status,
     size_t flen = ftpc->file?strlen(ftpc->file):0; /* file is "raw" already */
     size_t dlen = strlen(path)-flen;
     if(!ftpc->cwdfail) {
+      ftpc->prevmethod = data->set.ftp_filemethod;
       if(dlen && (data->set.ftp_filemethod != FTPFILE_NOCWD)) {
         ftpc->prevpath = path;
         if(flen)
           /* if 'path' is not the whole string */
-          ftpc->prevpath[dlen]=0; /* terminate */
+          ftpc->prevpath[dlen] = 0; /* terminate */
       }
       else {
         /* we never changed dir */
-        ftpc->prevpath=strdup("");
+        ftpc->prevpath = strdup("");
         free(path);
       }
       if(ftpc->prevpath)
@@ -3515,35 +3472,36 @@ static CURLcode ftp_range(struct connectdata *conn)
 {
   curl_off_t from, to;
   char *ptr;
-  char *ptr2;
   struct Curl_easy *data = conn->data;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
 
   if(data->state.use_range && data->state.range) {
-    from=curlx_strtoofft(data->state.range, &ptr, 0);
-    while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
+    CURLofft from_t;
+    CURLofft to_t;
+    from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
+    if(from_t == CURL_OFFT_FLOW)
+      return CURLE_RANGE_ERROR;
+    while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
       ptr++;
-    to=curlx_strtoofft(ptr, &ptr2, 0);
-    if(ptr == ptr2) {
-      /* we didn't get any digit */
-      to=-1;
-    }
-    if((-1 == to) && (from>=0)) {
+    to_t = curlx_strtoofft(ptr, NULL, 0, &to);
+    if(to_t == CURL_OFFT_FLOW)
+      return CURLE_RANGE_ERROR;
+    if((to_t == CURL_OFFT_INVAL) && !from_t) {
       /* X - */
       data->state.resume_from = from;
       DEBUGF(infof(conn->data, "FTP RANGE %" CURL_FORMAT_CURL_OFF_T
                    " to end of file\n", from));
     }
-    else if(from < 0) {
+    else if(!to_t && (from_t == CURL_OFFT_INVAL)) {
       /* -Y */
-      data->req.maxdownload = -from;
-      data->state.resume_from = from;
+      data->req.maxdownload = to;
+      data->state.resume_from = -to;
       DEBUGF(infof(conn->data, "FTP RANGE the last %" CURL_FORMAT_CURL_OFF_T
-                   " bytes\n", -from));
+                   " bytes\n", to));
     }
     else {
       /* X-Y */
-      data->req.maxdownload = (to-from)+1; /* include last byte */
+      data->req.maxdownload = (to - from) + 1; /* include last byte */
       data->state.resume_from = from;
       DEBUGF(infof(conn->data, "FTP RANGE from %" CURL_FORMAT_CURL_OFF_T
                    " getting %" CURL_FORMAT_CURL_OFF_T " bytes\n",
@@ -3574,7 +3532,7 @@ static CURLcode ftp_range(struct connectdata *conn)
 
 static CURLcode ftp_do_more(struct connectdata *conn, int *completep)
 {
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   CURLcode result = CURLE_OK;
   bool connected = FALSE;
@@ -3585,7 +3543,7 @@ static CURLcode ftp_do_more(struct connectdata *conn, int *completep)
 
   /* if the second connection isn't done yet, wait for it */
   if(!conn->bits.tcpconnect[SECONDARYSOCKET]) {
-    if(conn->tunnel_state[SECONDARYSOCKET] == TUNNEL_CONNECT) {
+    if(Curl_connect_ongoing(conn)) {
       /* As we're in TUNNEL_CONNECT state now, we know the proxy name and port
          aren't used so we blank their arguments. TODO: make this nicer */
       result = Curl_proxyCONNECT(conn, SECONDARYSOCKET, NULL, 0);
@@ -3617,7 +3575,7 @@ static CURLcode ftp_do_more(struct connectdata *conn, int *completep)
     return result;
 
   if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
-     conn->tunnel_state[SECONDARYSOCKET] != TUNNEL_COMPLETE)
+     Curl_connect_ongoing(conn))
     return result;
 
 
@@ -3741,7 +3699,7 @@ CURLcode ftp_perform(struct connectdata *conn,
                      bool *dophase_done)
 {
   /* this is FTP and no proxy */
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
 
   DEBUGF(infof(conn->data, "DO phase starts\n"));
 
@@ -4034,7 +3992,7 @@ CURLcode Curl_ftpsend(struct connectdata *conn, const char *cmd)
 #define SBUF_SIZE 1024
   char s[SBUF_SIZE];
   size_t write_len;
-  char *sptr=s;
+  char *sptr = s;
   CURLcode result = CURLE_OK;
 #ifdef HAVE_GSSAPI
   enum protection_level data_sec = conn->data_prot;
@@ -4045,9 +4003,8 @@ CURLcode Curl_ftpsend(struct connectdata *conn, const char *cmd)
     return CURLE_BAD_FUNCTION_ARGUMENT;
 
   strcpy(&s[write_len], "\r\n"); /* append a trailing CRLF */
-  write_len +=2;
-
-  bytes_written=0;
+  write_len += 2;
+  bytes_written = 0;
 
   result = Curl_convert_to_network(conn->data, s, write_len);
   /* Curl_convert_to_network calls failf if unsuccessful */
@@ -4125,7 +4082,7 @@ static CURLcode ftp_quit(struct connectdata *conn)
  */
 static CURLcode ftp_disconnect(struct connectdata *conn, bool dead_connection)
 {
-  struct ftp_conn *ftpc= &conn->proto.ftpc;
+  struct ftp_conn *ftpc = &conn->proto.ftpc;
   struct pingpong *pp = &ftpc->pp;
 
   /* We cannot send quit unconditionally. If this connection is stale or
@@ -4221,7 +4178,7 @@ CURLcode ftp_parse_url_path(struct connectdata *conn)
       ftpc->dirdepth = 0;
       break;
     }
-    slash_pos=strrchr(cur_pos, '/');
+    slash_pos = strrchr(cur_pos, '/');
     if(slash_pos || !*cur_pos) {
       size_t dirlen = slash_pos-cur_pos;
       CURLcode result;
@@ -4242,7 +4199,7 @@ CURLcode ftp_parse_url_path(struct connectdata *conn)
         return result;
       }
       ftpc->dirdepth = 1; /* we consider it to be a single dir */
-      filename = slash_pos ? slash_pos+1 : cur_pos; /* rest is file name */
+      filename = slash_pos ? slash_pos + 1 : cur_pos; /* rest is file name */
     }
     else
       filename = cur_pos;  /* this is a file name only */
@@ -4326,8 +4283,8 @@ CURLcode ftp_parse_url_path(struct connectdata *conn)
     }
   }
   else
-    ftpc->file=NULL; /* instead of point to a zero byte, we make it a NULL
-                       pointer */
+    ftpc->file = NULL; /* instead of point to a zero byte, we make it a NULL
+                          pointer */
 
   if(data->set.upload && !ftpc->file && (ftp->transfer == FTPTRANSFER_BODY)) {
     /* We need a file name when uploading. Return error! */
@@ -4351,7 +4308,8 @@ CURLcode ftp_parse_url_path(struct connectdata *conn)
 
     dlen -= ftpc->file?strlen(ftpc->file):0;
     if((dlen == strlen(ftpc->prevpath)) &&
-       !strncmp(path, ftpc->prevpath, dlen)) {
+       !strncmp(path, ftpc->prevpath, dlen) &&
+       (ftpc->prevmethod == data->set.ftp_filemethod)) {
       infof(data, "Request has same path as previous transfer\n");
       ftpc->cwddone = TRUE;
     }
@@ -4422,8 +4380,8 @@ static
 CURLcode ftp_regular_transfer(struct connectdata *conn,
                               bool *dophase_done)
 {
-  CURLcode result=CURLE_OK;
-  bool connected=FALSE;
+  CURLcode result = CURLE_OK;
+  bool connected = FALSE;
   struct Curl_easy *data = conn->data;
   struct ftp_conn *ftpc = &conn->proto.ftpc;
   data->req.size = -1; /* make sure this is unknown at this point */
@@ -4463,28 +4421,6 @@ static CURLcode ftp_setup_connection(struct connectdata *conn)
   char command;
   struct FTP *ftp;
 
-  if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
-    /* Unless we have asked to tunnel ftp operations through the proxy, we
-       switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
-    if(conn->handler == &Curl_handler_ftp)
-      conn->handler = &Curl_handler_ftp_proxy;
-    else {
-#ifdef USE_SSL
-      conn->handler = &Curl_handler_ftps_proxy;
-#else
-      failf(data, "FTPS not supported!");
-      return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-    }
-    /* set it up as a HTTP connection instead */
-    return conn->handler->setup_connection(conn);
-#else
-    failf(data, "FTP over http proxy requires HTTP support built-in!");
-    return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-  }
-
   conn->data->req.protop = ftp = malloc(sizeof(struct FTP));
   if(NULL == ftp)
     return CURLE_OUT_OF_MEMORY;
diff --git a/lib/ftp.h b/lib/ftp.h
index 3bbf262..e4aa63f 100644
--- a/lib/ftp.h
+++ b/lib/ftp.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -130,10 +130,12 @@ struct ftp_conn {
                        should be FALSE when it gets to Curl_ftp_quit() */
   bool cwddone;     /* if it has been determined that the proper CWD combo
                        already has been done */
+  int cwdcount;     /* number of CWD commands issued */
   bool cwdfail;     /* set TRUE if a CWD command fails, as then we must prevent
                        caching the current directory */
   bool wait_data_conn; /* this is set TRUE if data connection is waited */
   char *prevpath;   /* conn->path from the previous transfer */
+  curl_ftpfile prevmethod; /* ftp method in previous transfer  */
   char transfertype; /* set by ftp_transfertype for use by Curl_client_write()a
                         and others (A/I or zero) */
   int count1; /* general purpose counter for the state machine */
diff --git a/lib/ftplistparser.c b/lib/ftplistparser.c
index 2acce31..b2a8c0f 100644
--- a/lib/ftplistparser.c
+++ b/lib/ftplistparser.c
@@ -421,7 +421,7 @@ size_t Curl_ftp_parselist(char *buffer, size_t size, size_t nmemb,
           else if(c == '\n') {
             finfo->b_data[parser->item_length - 1] = 0;
             if(strncmp("total ", finfo->b_data, 6) == 0) {
-              char *endptr = finfo->b_data+6;
+              char *endptr = finfo->b_data + 6;
               /* here we can deal with directory size, pass the leading white
                  spaces and then the digits */
               while(ISSPACE(*endptr))
@@ -609,16 +609,18 @@ size_t Curl_ftp_parselist(char *buffer, size_t size, size_t nmemb,
             char *p;
             curl_off_t fsize;
             finfo->b_data[parser->item_offset + parser->item_length - 1] = 0;
-            fsize = curlx_strtoofft(finfo->b_data+parser->item_offset, &p, 10);
-            if(p[0] == '\0' && fsize != CURL_OFF_T_MAX &&
-                               fsize != CURL_OFF_T_MIN) {
-              parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_SIZE;
-              parser->file_data->info.size = fsize;
+            if(!curlx_strtoofft(finfo->b_data + parser->item_offset,
+                                &p, 10, &fsize)) {
+              if(p[0] == '\0' && fsize != CURL_OFF_T_MAX &&
+                 fsize != CURL_OFF_T_MIN) {
+                parser->file_data->info.flags |= CURLFINFOFLAG_KNOWN_SIZE;
+                parser->file_data->info.size = fsize;
+              }
+              parser->item_length = 0;
+              parser->item_offset = 0;
+              parser->state.UNIX.main = PL_UNIX_TIME;
+              parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART1;
             }
-            parser->item_length = 0;
-            parser->item_offset = 0;
-            parser->state.UNIX.main = PL_UNIX_TIME;
-            parser->state.UNIX.sub.time = PL_UNIX_TIME_PREPART1;
           }
           else if(!ISDIGIT(c)) {
             PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
@@ -935,19 +937,9 @@ size_t Curl_ftp_parselist(char *buffer, size_t size, size_t nmemb,
             }
             else {
               char *endptr;
-              finfo->size = curlx_strtoofft(finfo->b_data +
-                                            parser->item_offset,
-                                            &endptr, 10);
-              if(!*endptr) {
-                if(finfo->size == CURL_OFF_T_MAX ||
-                   finfo->size == CURL_OFF_T_MIN) {
-                  if(errno == ERANGE) {
-                    PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
-                    return bufflen;
-                  }
-                }
-              }
-              else {
+              if(curlx_strtoofft(finfo->b_data +
+                                 parser->item_offset,
+                                 &endptr, 10, &finfo->size)) {
                 PL_ERROR(conn, CURLE_FTP_BAD_FILE_LIST);
                 return bufflen;
               }
diff --git a/lib/getinfo.c b/lib/getinfo.c
index a1ce505..862ced0 100644
--- a/lib/getinfo.c
+++ b/lib/getinfo.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -54,6 +54,7 @@ CURLcode Curl_initinfo(struct Curl_easy *data)
   pro->t_starttransfer = 0;
   pro->timespent = 0;
   pro->t_redirect = 0;
+  pro->is_t_startransfer_set = false;
 
   info->httpcode = 0;
   info->httpproxycode = 0;
@@ -246,27 +247,60 @@ static CURLcode getinfo_long(struct Curl_easy *data, CURLINFO info,
   return CURLE_OK;
 }
 
+#define DOUBLE_SECS(x) (double)(x)/1000000
+
+static CURLcode getinfo_offt(struct Curl_easy *data, CURLINFO info,
+                             curl_off_t *param_offt)
+{
+  switch(info) {
+  case CURLINFO_SIZE_UPLOAD_T:
+    *param_offt = data->progress.uploaded;
+    break;
+  case CURLINFO_SIZE_DOWNLOAD_T:
+    *param_offt = data->progress.downloaded;
+    break;
+  case CURLINFO_SPEED_DOWNLOAD_T:
+    *param_offt =  data->progress.dlspeed;
+    break;
+  case CURLINFO_SPEED_UPLOAD_T:
+    *param_offt = data->progress.ulspeed;
+    break;
+  case CURLINFO_CONTENT_LENGTH_DOWNLOAD_T:
+    *param_offt = (data->progress.flags & PGRS_DL_SIZE_KNOWN)?
+      data->progress.size_dl:-1;
+    break;
+  case CURLINFO_CONTENT_LENGTH_UPLOAD_T:
+    *param_offt = (data->progress.flags & PGRS_UL_SIZE_KNOWN)?
+      data->progress.size_ul:-1;
+    break;
+  default:
+    return CURLE_UNKNOWN_OPTION;
+  }
+
+  return CURLE_OK;
+}
+
 static CURLcode getinfo_double(struct Curl_easy *data, CURLINFO info,
                                double *param_doublep)
 {
   switch(info) {
   case CURLINFO_TOTAL_TIME:
-    *param_doublep = data->progress.timespent;
+    *param_doublep = DOUBLE_SECS(data->progress.timespent);
     break;
   case CURLINFO_NAMELOOKUP_TIME:
-    *param_doublep = data->progress.t_nslookup;
+    *param_doublep = DOUBLE_SECS(data->progress.t_nslookup);
     break;
   case CURLINFO_CONNECT_TIME:
-    *param_doublep = data->progress.t_connect;
+    *param_doublep = DOUBLE_SECS(data->progress.t_connect);
     break;
   case CURLINFO_APPCONNECT_TIME:
-    *param_doublep = data->progress.t_appconnect;
+    *param_doublep = DOUBLE_SECS(data->progress.t_appconnect);
     break;
   case CURLINFO_PRETRANSFER_TIME:
-    *param_doublep =  data->progress.t_pretransfer;
+    *param_doublep = DOUBLE_SECS(data->progress.t_pretransfer);
     break;
   case CURLINFO_STARTTRANSFER_TIME:
-    *param_doublep = data->progress.t_starttransfer;
+    *param_doublep = DOUBLE_SECS(data->progress.t_starttransfer);
     break;
   case CURLINFO_SIZE_UPLOAD:
     *param_doublep =  (double)data->progress.uploaded;
@@ -289,7 +323,7 @@ static CURLcode getinfo_double(struct Curl_easy *data, CURLINFO info,
       (double)data->progress.size_ul:-1;
     break;
   case CURLINFO_REDIRECT_TIME:
-    *param_doublep =  data->progress.t_redirect;
+    *param_doublep = DOUBLE_SECS(data->progress.t_redirect);
     break;
 
   default:
@@ -326,46 +360,25 @@ static CURLcode getinfo_slist(struct Curl_easy *data, CURLINFO info,
       struct curl_tlssessioninfo **tsip = (struct curl_tlssessioninfo **)
                                           param_slistp;
       struct curl_tlssessioninfo *tsi = &data->tsi;
+#ifdef USE_SSL
       struct connectdata *conn = data->easy_conn;
+#endif
 
       *tsip = tsi;
       tsi->backend = Curl_ssl_backend();
       tsi->internals = NULL;
 
+#ifdef USE_SSL
       if(conn && tsi->backend != CURLSSLBACKEND_NONE) {
         unsigned int i;
         for(i = 0; i < (sizeof(conn->ssl) / sizeof(conn->ssl[0])); ++i) {
           if(conn->ssl[i].use) {
-#if defined(USE_AXTLS)
-            tsi->internals = (void *)conn->ssl[i].ssl;
-#elif defined(USE_CYASSL)
-            tsi->internals = (void *)conn->ssl[i].handle;
-#elif defined(USE_DARWINSSL)
-            tsi->internals = (void *)conn->ssl[i].ssl_ctx;
-#elif defined(USE_GNUTLS)
-            tsi->internals = (void *)conn->ssl[i].session;
-#elif defined(USE_GSKIT)
-            tsi->internals = (void *)conn->ssl[i].handle;
-#elif defined(USE_MBEDTLS)
-            tsi->internals = (void *)&conn->ssl[i].ssl;
-#elif defined(USE_NSS)
-            tsi->internals = (void *)conn->ssl[i].handle;
-#elif defined(USE_OPENSSL)
-            /* Legacy: CURLINFO_TLS_SESSION must return an SSL_CTX pointer. */
-            tsi->internals = ((info == CURLINFO_TLS_SESSION) ?
-                              (void *)conn->ssl[i].ctx :
-                              (void *)conn->ssl[i].handle);
-#elif defined(USE_POLARSSL)
-            tsi->internals = (void *)&conn->ssl[i].ssl;
-#elif defined(USE_SCHANNEL)
-            tsi->internals = (void *)&conn->ssl[i].ctxt->ctxt_handle;
-#elif defined(USE_SSL)
-#error "SSL backend specific information missing for CURLINFO_TLS_SSL_PTR"
-#endif
+            tsi->internals = Curl_ssl->get_internals(&conn->ssl[i], info);
             break;
           }
         }
       }
+#endif
     }
     break;
   default:
@@ -394,6 +407,7 @@ CURLcode Curl_getinfo(struct Curl_easy *data, CURLINFO info, ...)
   va_list arg;
   long *param_longp = NULL;
   double *param_doublep = NULL;
+  curl_off_t *param_offt = NULL;
   const char **param_charp = NULL;
   struct curl_slist **param_slistp = NULL;
   curl_socket_t *param_socketp = NULL;
@@ -422,6 +436,11 @@ CURLcode Curl_getinfo(struct Curl_easy *data, CURLINFO info, ...)
     if(param_doublep)
       result = getinfo_double(data, info, param_doublep);
     break;
+  case CURLINFO_OFF_T:
+    param_offt = va_arg(arg, curl_off_t *);
+    if(param_offt)
+      result = getinfo_offt(data, info, param_offt);
+    break;
   case CURLINFO_SLIST:
     param_slistp = va_arg(arg, struct curl_slist **);
     if(param_slistp)
diff --git a/lib/gopher.c b/lib/gopher.c
index e6d2746..b7c31b6 100644
--- a/lib/gopher.c
+++ b/lib/gopher.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -65,6 +65,7 @@ const struct Curl_handler Curl_handler_gopher = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_GOPHER,                          /* defport */
   CURLPROTO_GOPHER,                     /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -72,8 +73,8 @@ const struct Curl_handler Curl_handler_gopher = {
 
 static CURLcode gopher_do(struct connectdata *conn, bool *done)
 {
-  CURLcode result=CURLE_OK;
-  struct Curl_easy *data=conn->data;
+  CURLcode result = CURLE_OK;
+  struct Curl_easy *data = conn->data;
   curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
 
   curl_off_t *bytecount = &data->req.bytecount;
@@ -96,11 +97,11 @@ static CURLcode gopher_do(struct connectdata *conn, bool *done)
 
     /* Otherwise, drop / and the first character (i.e., item type) ... */
     newp = path;
-    newp+=2;
+    newp += 2;
 
     /* ... then turn ? into TAB for search servers, Veronica, etc. ... */
     j = strlen(newp);
-    for(i=0; i<j; i++)
+    for(i = 0; i<j; i++)
       if(newp[i] == '?')
         newp[i] = '\x09';
 
diff --git a/lib/hash.c b/lib/hash.c
index 6afeaa1..c99b1b6 100644
--- a/lib/hash.c
+++ b/lib/hash.c
@@ -300,10 +300,10 @@ Curl_hash_next_element(struct curl_hash_iterator *iter)
 
   /* If we have reached the end of the list, find the next one */
   if(!iter->current_element) {
-    for(i = iter->slot_index;i < h->slots;i++) {
+    for(i = iter->slot_index; i < h->slots; i++) {
       if(h->table[i].head) {
         iter->current_element = h->table[i].head;
-        iter->slot_index = i+1;
+        iter->slot_index = i + 1;
         break;
       }
     }
diff --git a/lib/hostcheck.c b/lib/hostcheck.c
index 156091c..23dc3d2 100644
--- a/lib/hostcheck.c
+++ b/lib/hostcheck.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -73,10 +73,10 @@ static int hostmatch(char *hostname, char *pattern)
   /* normalize pattern and hostname by stripping off trailing dots */
   size_t len = strlen(hostname);
   if(hostname[len-1]=='.')
-    hostname[len-1]=0;
+    hostname[len-1] = 0;
   len = strlen(pattern);
   if(pattern[len-1]=='.')
-    pattern[len-1]=0;
+    pattern[len-1] = 0;
 
   pattern_wildcard = strchr(pattern, '*');
   if(pattern_wildcard == NULL)
@@ -95,7 +95,7 @@ static int hostmatch(char *hostname, char *pattern)
      match. */
   wildcard_enabled = 1;
   pattern_label_end = strchr(pattern, '.');
-  if(pattern_label_end == NULL || strchr(pattern_label_end+1, '.') == NULL ||
+  if(pattern_label_end == NULL || strchr(pattern_label_end + 1, '.') == NULL ||
      pattern_wildcard > pattern_label_end ||
      strncasecompare(pattern, "xn--", 4)) {
     wildcard_enabled = 0;
@@ -116,9 +116,9 @@ static int hostmatch(char *hostname, char *pattern)
     return CURL_HOST_NOMATCH;
 
   prefixlen = pattern_wildcard - pattern;
-  suffixlen = pattern_label_end - (pattern_wildcard+1);
+  suffixlen = pattern_label_end - (pattern_wildcard + 1);
   return strncasecompare(pattern, hostname, prefixlen) &&
-    strncasecompare(pattern_wildcard+1, hostname_label_end - suffixlen,
+    strncasecompare(pattern_wildcard + 1, hostname_label_end - suffixlen,
                     suffixlen) ?
     CURL_HOST_MATCH : CURL_HOST_NOMATCH;
 }
@@ -137,7 +137,7 @@ int Curl_cert_hostcheck(const char *match_pattern, const char *hostname)
       hostp = strdup(hostname);
       if(hostp) {
         if(hostmatch(hostp, matchp) == CURL_HOST_MATCH)
-          res= 1;
+          res = 1;
         free(hostp);
       }
       free(matchp);
diff --git a/lib/hostip.c b/lib/hostip.c
index 619ec84..1a18a3e 100644
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -304,9 +304,9 @@ fetch_addr(struct connectdata *conn,
   entry_len = strlen(entry_id);
 
   /* See if its already in our dns cache */
-  dns = Curl_hash_pick(data->dns.hostcache, entry_id, entry_len+1);
+  dns = Curl_hash_pick(data->dns.hostcache, entry_id, entry_len + 1);
 
-  if(dns && (data->set.dns_cache_timeout != -1))  {
+  if(dns && (data->set.dns_cache_timeout != -1)) {
     /* See whether the returned entry is stale. Done before we release lock */
     struct hostcache_prune_data user;
 
@@ -316,7 +316,7 @@ fetch_addr(struct connectdata *conn,
     if(hostcache_timestamp_remove(&user, dns)) {
       infof(data, "Hostname in DNS cache was stale, zapped\n");
       dns = NULL; /* the memory deallocation is being handled by the hash */
-      Curl_hash_delete(data->dns.hostcache, entry_id, entry_len+1);
+      Curl_hash_delete(data->dns.hostcache, entry_id, entry_len + 1);
     }
   }
 
@@ -403,7 +403,7 @@ Curl_cache_addr(struct Curl_easy *data,
     dns->timestamp = 1;   /* zero indicates CURLOPT_RESOLVE entry */
 
   /* Store the resolved data in our DNS cache. */
-  dns2 = Curl_hash_add(data->dns.hostcache, entry_id, entry_len+1,
+  dns2 = Curl_hash_add(data->dns.hostcache, entry_id, entry_len + 1,
                        (void *)dns);
   if(!dns2) {
     free(dns);
@@ -807,7 +807,7 @@ CURLcode Curl_loadhostpairs(struct Curl_easy *data)
         Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
 
       /* delete entry, ignore if it didn't exist */
-      Curl_hash_delete(data->dns.hostcache, entry_id, entry_len+1);
+      Curl_hash_delete(data->dns.hostcache, entry_id, entry_len + 1);
 
       if(data->share)
         Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
@@ -848,7 +848,7 @@ CURLcode Curl_loadhostpairs(struct Curl_easy *data)
         Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
 
       /* See if its already in our dns cache */
-      dns = Curl_hash_pick(data->dns.hostcache, entry_id, entry_len+1);
+      dns = Curl_hash_pick(data->dns.hostcache, entry_id, entry_len + 1);
 
       /* free the allocated entry_id again */
       free(entry_id);
diff --git a/lib/hostip4.c b/lib/hostip4.c
index e459328..6a7c6e5 100644
--- a/lib/hostip4.c
+++ b/lib/hostip4.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -249,7 +249,7 @@ Curl_addrinfo *Curl_ipv4_resolve_r(const char *hostname,
      */
 
     if(CURL_HOSTENT_SIZE >=
-       (sizeof(struct hostent)+sizeof(struct hostent_data))) {
+       (sizeof(struct hostent) + sizeof(struct hostent_data))) {
 
       /* August 22nd, 2000: Albert Chin-A-Young brought an updated version
        * that should work! September 20: Richard Prescott worked on the buffer
diff --git a/lib/hostip6.c b/lib/hostip6.c
index 4ebfc2d..edeebec 100644
--- a/lib/hostip6.c
+++ b/lib/hostip6.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -212,7 +212,7 @@ Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
 
   if(port) {
     snprintf(sbuf, sizeof(sbuf), "%d", port);
-    sbufptr=sbuf;
+    sbufptr = sbuf;
   }
 
   error = Curl_getaddrinfo_ex(hostname, sbufptr, &hints, &res);
diff --git a/lib/http.c b/lib/http.c
index 21574e2..38227eb 100644
--- a/lib/http.c
+++ b/lib/http.c
@@ -50,6 +50,7 @@
 #include "transfer.h"
 #include "sendf.h"
 #include "formdata.h"
+#include "mime.h"
 #include "progress.h"
 #include "curl_base64.h"
 #include "cookie.h"
@@ -119,6 +120,7 @@ const struct Curl_handler Curl_handler_http = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_HTTP,                            /* defport */
   CURLPROTO_HTTP,                       /* protocol */
   PROTOPT_CREDSPERREQUEST               /* flags */
@@ -143,6 +145,7 @@ const struct Curl_handler Curl_handler_https = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_HTTPS,                           /* defport */
   CURLPROTO_HTTPS,                      /* protocol */
   PROTOPT_SSL | PROTOPT_CREDSPERREQUEST | PROTOPT_ALPN_NPN /* flags */
@@ -160,6 +163,7 @@ CURLcode Curl_http_setup_conn(struct connectdata *conn)
   if(!http)
     return CURLE_OUT_OF_MEMORY;
 
+  Curl_mime_initpart(&http->form, conn->data);
   conn->data->req.protop = http;
 
   Curl_http2_setup_conn(conn);
@@ -168,26 +172,6 @@ CURLcode Curl_http_setup_conn(struct connectdata *conn)
   return CURLE_OK;
 }
 
-/*
- * checkheaders() checks the linked list of custom HTTP headers for a
- * particular header (prefix).
- *
- * Returns a pointer to the first matching header or NULL if none matched.
- */
-char *Curl_checkheaders(const struct connectdata *conn,
-                        const char *thisheader)
-{
-  struct curl_slist *head;
-  size_t thislen = strlen(thisheader);
-  struct Curl_easy *data = conn->data;
-
-  for(head = data->set.headers;head; head=head->next) {
-    if(strncasecompare(head->data, thisheader, thislen))
-      return head->data;
-  }
-
-  return NULL;
-}
 
 /*
  * checkProxyHeaders() checks the linked list of custom proxy headers
@@ -207,7 +191,7 @@ char *Curl_checkProxyheaders(const struct connectdata *conn,
 
   for(head = (conn->bits.proxy && data->set.sep_headers) ?
         data->set.proxyheaders : data->set.headers;
-      head; head=head->next) {
+      head; head = head->next) {
     if(strncasecompare(head->data, thisheader, thislen))
       return head->data;
   }
@@ -425,6 +409,7 @@ static CURLcode http_perhapsrewind(struct connectdata *conn)
         expectsend = data->state.infilesize;
       break;
     case HTTPREQ_POST_FORM:
+    case HTTPREQ_POST_MIME:
       expectsend = http->postsize;
       break;
     default:
@@ -608,7 +593,7 @@ output_auth_headers(struct connectdata *conn,
 #endif
 #if defined(USE_NTLM) && defined(NTLM_WB_ENABLED)
   if(authstatus->picked == CURLAUTH_NTLM_WB) {
-    auth="NTLM_WB";
+    auth = "NTLM_WB";
     result = Curl_output_ntlm_wb(conn, proxy);
     if(result)
       return result;
@@ -1020,7 +1005,7 @@ static size_t readmoredata(char *buffer,
 
       http->sending++; /* move one step up */
 
-      http->backup.postsize=0;
+      http->backup.postsize = 0;
     }
     else
       http->postsize = 0;
@@ -1148,7 +1133,7 @@ CURLcode Curl_add_buffer_send(Curl_send_buffer *in,
         /* there was body data sent beyond the initial header part, pass that
            on to the debug callback too */
         Curl_debug(conn->data, CURLINFO_DATA_OUT,
-                   ptr+headlen, bodylen, conn);
+                   ptr + headlen, bodylen, conn);
       }
     }
 
@@ -1260,7 +1245,7 @@ CURLcode Curl_add_buffer(Curl_send_buffer *in, const void *inptr, size_t size)
        (~(size * 2) < (in->size_used * 2)))
       new_size = (size_t)-1;
     else
-      new_size = (in->size_used+size) * 2;
+      new_size = (in->size_used + size) * 2;
 
     if(in->buffer)
       /* we have a buffer, enlarge the existing one */
@@ -1337,7 +1322,7 @@ Curl_compareheader(const char *headerline, /* line to check */
   clen = strlen(content); /* length of the word to find */
 
   /* find the content string in the rest of the line */
-  for(;len>=clen;len--, start++) {
+  for(; len >= clen; len--, start++) {
     if(strncasecompare(start, content, clen))
       return TRUE; /* match! */
   }
@@ -1369,7 +1354,7 @@ CURLcode Curl_http_connect(struct connectdata *conn, bool *done)
   if(CONNECT_FIRSTSOCKET_PROXY_SSL())
     return CURLE_OK; /* wait for HTTPS proxy SSL initialization to complete */
 
-  if(conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
+  if(Curl_connect_ongoing(conn))
     /* nothing else to do except wait right now - we're not done here. */
     return CURLE_OK;
 
@@ -1468,18 +1453,17 @@ CURLcode Curl_http_done(struct connectdata *conn,
 
   Curl_http2_done(conn, premature);
 
-  if(HTTPREQ_POST_FORM == data->set.httpreq) {
-    data->req.bytecount = http->readbytecount + http->writebytecount;
+  Curl_mime_cleanpart(&http->form);
 
-    Curl_formclean(&http->sendit); /* Now free that whole lot */
-    if(http->form.fp) {
-      /* a file being uploaded was left opened, close it! */
-      fclose(http->form.fp);
-      http->form.fp = NULL;
-    }
-  }
-  else if(HTTPREQ_PUT == data->set.httpreq)
+  switch(data->set.httpreq) {
+  case HTTPREQ_PUT:
+  case HTTPREQ_POST_FORM:
+  case HTTPREQ_POST_MIME:
     data->req.bytecount = http->readbytecount + http->writebytecount;
+    break;
+  default:
+    break;
+  }
 
   if(status)
     return status;
@@ -1579,7 +1563,7 @@ CURLcode Curl_add_custom_headers(struct connectdata *conn,
   char *ptr;
   struct curl_slist *h[2];
   struct curl_slist *headers;
-  int numlists=1; /* by default */
+  int numlists = 1; /* by default */
   struct Curl_easy *data = conn->data;
   int i;
 
@@ -1611,7 +1595,7 @@ CURLcode Curl_add_custom_headers(struct connectdata *conn,
   }
 
   /* loop through one or two lists */
-  for(i=0; i < numlists; i++) {
+  for(i = 0; i < numlists; i++) {
     headers = h[i];
 
     while(headers) {
@@ -1635,15 +1619,19 @@ CURLcode Curl_add_custom_headers(struct connectdata *conn,
                   /* this header (extended by formdata.c) is sent later */
                   checkprefix("Content-Type:", headers->data))
             ;
+          else if(data->set.httpreq == HTTPREQ_POST_MIME &&
+                  /* this header is sent later */
+                  checkprefix("Content-Type:", headers->data))
+            ;
           else if(conn->bits.authneg &&
                   /* while doing auth neg, don't allow the custom length since
                      we will force length zero then */
-                  checkprefix("Content-Length", headers->data))
+                  checkprefix("Content-Length:", headers->data))
             ;
           else if(conn->allocptr.te &&
                   /* when asking for Transfer-Encoding, don't pass on a custom
                      Connection: */
-                  checkprefix("Connection", headers->data))
+                  checkprefix("Connection:", headers->data))
             ;
           else if((conn->httpversion == 20) &&
                   checkprefix("Transfer-Encoding:", headers->data))
@@ -1676,6 +1664,10 @@ CURLcode Curl_add_custom_headers(struct connectdata *conn,
               *ptr = ':';
               result = Curl_add_bufferf(req_buffer, "%s\r\n",
                                         headers->data);
+
+              /* restore the previous value */
+              *ptr = ';';
+
               if(result)
                 return result;
             }
@@ -1773,7 +1765,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
   const char *httpstring;
   Curl_send_buffer *req_buffer;
   curl_off_t postsize = 0; /* curl_off_t to handle large file sizes */
-  int seekerr = CURL_SEEKFUNC_OK;
+  int seekerr = CURL_SEEKFUNC_CANTSEEK;
 
   /* Always consider the DO phase done after this function call, even if there
      may be parts of the request that is not yet sent, since we can deal with
@@ -1846,11 +1838,15 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       switch(httpreq) {
       case HTTPREQ_POST:
       case HTTPREQ_POST_FORM:
+      case HTTPREQ_POST_MIME:
         request = "POST";
         break;
       case HTTPREQ_PUT:
         request = "PUT";
         break;
+      case HTTPREQ_OPTIONS:
+        request = "OPTIONS";
+        break;
       default: /* this should never happen */
       case HTTPREQ_GET:
         request = "GET";
@@ -1868,7 +1864,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
      here. */
   if(Curl_checkheaders(conn, "User-Agent:")) {
     free(conn->allocptr.uagent);
-    conn->allocptr.uagent=NULL;
+    conn->allocptr.uagent = NULL;
   }
 
   /* setup the authentication headers */
@@ -1937,6 +1933,48 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
   }
 #endif
 
+  switch(httpreq) {
+  case HTTPREQ_POST_MIME:
+    http->sendit = &data->set.mimepost;
+    break;
+  case HTTPREQ_POST_FORM:
+    /* Convert the form structure into a mime structure. */
+    Curl_mime_cleanpart(&http->form);
+    result = Curl_getformdata(data, &http->form, data->set.httppost,
+                              data->state.fread_func);
+    if(result)
+      return result;
+    http->sendit = &http->form;
+    break;
+  default:
+    http->sendit = NULL;
+  }
+
+  if(http->sendit) {
+    const char *cthdr = Curl_checkheaders(conn, "Content-Type:");
+
+    /* Read and seek body only. */
+    http->sendit->flags |= MIME_BODY_ONLY;
+
+    /* Prepare the mime structure headers & set content type. */
+
+    if(cthdr)
+      for(cthdr += 13; *cthdr == ' '; cthdr++)
+        ;
+    else if(http->sendit->kind == MIMEKIND_MULTIPART)
+      cthdr = "multipart/form-data";
+
+    curl_mime_headers(http->sendit, data->set.headers, 0);
+    result = Curl_mime_prepare_headers(http->sendit, cthdr,
+                                       NULL, MIMESTRATEGY_FORM);
+    curl_mime_headers(http->sendit, NULL, 0);
+    if(!result)
+      result = Curl_mime_rewind(http->sendit);
+    if(result)
+      return result;
+    http->postsize = Curl_mime_size(http->sendit);
+  }
+
   ptr = Curl_checkheaders(conn, "Transfer-Encoding:");
   if(ptr) {
     /* Some kind of TE is requested, check if 'chunked' is chosen */
@@ -1944,9 +1982,10 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       Curl_compareheader(ptr, "Transfer-Encoding:", "chunked");
   }
   else {
-    if((conn->handler->protocol&PROTO_FAMILY_HTTP) &&
-       data->set.upload &&
-       (data->state.infilesize == -1)) {
+    if((conn->handler->protocol & PROTO_FAMILY_HTTP) &&
+       (((httpreq == HTTPREQ_POST_MIME || httpreq == HTTPREQ_POST_FORM) &&
+       http->postsize < 0) ||
+       (data->set.upload && data->state.infilesize == -1))) {
       if(conn->bits.authneg)
         /* don't enable chunked during auth neg */
         ;
@@ -2044,7 +2083,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
   }
 
 #ifndef CURL_DISABLE_PROXY
-  if(conn->bits.httpproxy && !conn->bits.tunnel_proxy)  {
+  if(conn->bits.httpproxy && !conn->bits.tunnel_proxy) {
     /* Using a proxy but does not tunnel through it */
 
     /* The path sent to the proxy is in fact the entire URL. But if the remote
@@ -2118,21 +2157,9 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
   }
 #endif /* CURL_DISABLE_PROXY */
 
-  if(HTTPREQ_POST_FORM == httpreq) {
-    /* we must build the whole post sequence first, so that we have a size of
-       the whole transfer before we start to send it */
-    result = Curl_getformdata(data, &http->sendit, data->set.httppost,
-                              Curl_checkheaders(conn, "Content-Type:"),
-                              &http->postsize);
-    if(result)
-      return result;
-  }
-
   http->p_accept = Curl_checkheaders(conn, "Accept:")?NULL:"Accept: */*\r\n";
 
-  if(( (HTTPREQ_POST == httpreq) ||
-       (HTTPREQ_POST_FORM == httpreq) ||
-       (HTTPREQ_PUT == httpreq) ) &&
+  if((HTTPREQ_POST == httpreq || HTTPREQ_PUT == httpreq) &&
      data->state.resume_from) {
     /**********************************************************************
      * Resuming upload in HTTP means that we PUT or POST and that we have
@@ -2140,6 +2167,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
      * a Range: header that will be passed along. We need to "fast forward"
      * the file the given number of bytes and decrease the assume upload
      * file size before we continue this venture in the dark lands of HTTP.
+     * Resuming mime/form posting at an offset > 0 has no sense and is ignored.
      *********************************************************************/
 
     if(data->state.resume_from < 0) {
@@ -2161,7 +2189,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       }
 
       if(seekerr != CURL_SEEKFUNC_OK) {
-        curl_off_t passed=0;
+        curl_off_t passed = 0;
 
         if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
           failf(data, "Could not seek stream");
@@ -2214,7 +2242,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       conn->allocptr.rangeline = aprintf("Range: bytes=%s\r\n",
                                          data->state.range);
     }
-    else if((httpreq != HTTPREQ_GET) &&
+    else if((httpreq == HTTPREQ_POST || httpreq == HTTPREQ_PUT) &&
             !Curl_checkheaders(conn, "Content-Range:")) {
 
       /* if a line like this was already allocated, free the previous one */
@@ -2232,7 +2260,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       }
       else if(data->state.resume_from) {
         /* This is because "resume" was selected */
-        curl_off_t total_expected_size=
+        curl_off_t total_expected_size =
           data->state.resume_from + data->state.infilesize;
         conn->allocptr.rangeline =
           aprintf("Content-Range: bytes %s%" CURL_FORMAT_CURL_OFF_T
@@ -2266,6 +2294,9 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
   if(result)
     return result;
 
+  if(data->set.str[STRING_TARGET])
+    ppath = data->set.str[STRING_TARGET];
+
   /* url */
   if(paste_ftp_userpwd)
     result = Curl_add_bufferf(req_buffer, "ftp://%s:%s@%s",
@@ -2339,8 +2370,8 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
 
 #if !defined(CURL_DISABLE_COOKIES)
   if(data->cookies || addcookies) {
-    struct Cookie *co=NULL; /* no cookies from start */
-    int count=0;
+    struct Cookie *co = NULL; /* no cookies from start */
+    int count = 0;
 
     if(data->cookies) {
       Curl_share_lock(data, CURL_LOCK_DATA_COOKIE, CURL_LOCK_ACCESS_SINGLE);
@@ -2353,7 +2384,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       Curl_share_unlock(data, CURL_LOCK_DATA_COOKIE);
     }
     if(co) {
-      struct Cookie *store=co;
+      struct Cookie *store = co;
       /* now loop through all cookies that matched */
       while(co) {
         if(co->value) {
@@ -2407,117 +2438,79 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
 
   switch(httpreq) {
 
-  case HTTPREQ_POST_FORM:
-    if(!http->sendit || conn->bits.authneg) {
-      /* nothing to post! */
-      result = Curl_add_bufferf(req_buffer, "Content-Length: 0\r\n\r\n");
-      if(result)
-        return result;
-
-      result = Curl_add_buffer_send(req_buffer, conn,
-                                    &data->info.request_size, 0, FIRSTSOCKET);
-      if(result)
-        failf(data, "Failed sending POST request");
-      else
-        /* setup variables for the upcoming transfer */
-        Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
-                            -1, NULL);
-      break;
-    }
-
-    if(Curl_FormInit(&http->form, http->sendit)) {
-      failf(data, "Internal HTTP POST error!");
-      return CURLE_HTTP_POST_ERROR;
-    }
-
-    /* Get the currently set callback function pointer and store that in the
-       form struct since we might want the actual user-provided callback later
-       on. The data->set.fread_func pointer itself will be changed for the
-       multipart case to the function that returns a multipart formatted
-       stream. */
-    http->form.fread_func = data->state.fread_func;
-
-    /* Set the read function to read from the generated form data */
-    data->state.fread_func = (curl_read_callback)Curl_FormReader;
-    data->state.in = &http->form;
+  case HTTPREQ_PUT: /* Let's PUT the data to the server! */
 
-    http->sending = HTTPSEND_BODY;
+    if(conn->bits.authneg)
+      postsize = 0;
+    else
+      postsize = data->state.infilesize;
 
-    if(!data->req.upload_chunky &&
-       !Curl_checkheaders(conn, "Content-Length:")) {
+    if((postsize != -1) && !data->req.upload_chunky &&
+       (conn->bits.authneg || !Curl_checkheaders(conn, "Content-Length:"))) {
       /* only add Content-Length if not uploading chunked */
       result = Curl_add_bufferf(req_buffer,
                                 "Content-Length: %" CURL_FORMAT_CURL_OFF_T
-                                "\r\n", http->postsize);
+                                "\r\n", postsize);
       if(result)
         return result;
     }
 
-    result = expect100(data, conn, req_buffer);
-    if(result)
-      return result;
-
-    {
-
-      /* Get Content-Type: line from Curl_formpostheader.
-       */
-      char *contentType;
-      size_t linelength=0;
-      contentType = Curl_formpostheader((void *)&http->form,
-                                        &linelength);
-      if(!contentType) {
-        failf(data, "Could not get Content-Type header line!");
-        return CURLE_HTTP_POST_ERROR;
-      }
-
-      result = Curl_add_buffer(req_buffer, contentType, linelength);
+    if(postsize != 0) {
+      result = expect100(data, conn, req_buffer);
       if(result)
         return result;
     }
 
-    /* make the request end in a true CRLF */
-    result = Curl_add_buffer(req_buffer, "\r\n", 2);
+    result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers */
     if(result)
       return result;
 
-    /* set upload size to the progress meter */
-    Curl_pgrsSetUploadSize(data, http->postsize);
+    /* set the upload size to the progress meter */
+    Curl_pgrsSetUploadSize(data, postsize);
 
-    /* fire away the whole request to the server */
+    /* this sends the buffer and frees all the buffer resources */
     result = Curl_add_buffer_send(req_buffer, conn,
                                   &data->info.request_size, 0, FIRSTSOCKET);
     if(result)
-      failf(data, "Failed sending POST request");
+      failf(data, "Failed sending PUT request");
     else
-      /* setup variables for the upcoming transfer */
+      /* prepare for transfer */
       Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
-                          &http->readbytecount, FIRSTSOCKET,
-                          &http->writebytecount);
-
-    if(result) {
-      Curl_formclean(&http->sendit); /* free that whole lot */
-      return result;
-    }
-
-    /* convert the form data */
-    result = Curl_convert_form(data, http->sendit);
-    if(result) {
-      Curl_formclean(&http->sendit); /* free that whole lot */
+                          &http->readbytecount, postsize?FIRSTSOCKET:-1,
+                          postsize?&http->writebytecount:NULL);
+    if(result)
       return result;
-    }
-
     break;
 
-  case HTTPREQ_PUT: /* Let's PUT the data to the server! */
+  case HTTPREQ_POST_FORM:
+  case HTTPREQ_POST_MIME:
+    /* This is form posting using mime data. */
+    if(conn->bits.authneg) {
+      /* nothing to post! */
+      result = Curl_add_bufferf(req_buffer, "Content-Length: 0\r\n\r\n");
+      if(result)
+        return result;
 
-    if(conn->bits.authneg)
-      postsize = 0;
-    else
-      postsize = data->state.infilesize;
+      result = Curl_add_buffer_send(req_buffer, conn,
+                                    &data->info.request_size, 0, FIRSTSOCKET);
+      if(result)
+        failf(data, "Failed sending POST request");
+      else
+        /* setup variables for the upcoming transfer */
+        Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE, &http->readbytecount,
+                            -1, NULL);
+      break;
+    }
 
-    if((postsize != -1) && !data->req.upload_chunky &&
+    postsize = http->postsize;
+
+    /* We only set Content-Length and allow a custom Content-Length if
+       we don't upload data chunked, as RFC2616 forbids us to set both
+       kinds of headers (Transfer-Encoding: chunked and Content-Length) */
+    if(postsize != -1 && !data->req.upload_chunky &&
        (conn->bits.authneg || !Curl_checkheaders(conn, "Content-Length:"))) {
-      /* only add Content-Length if not uploading chunked */
+      /* we allow replacing this header if not during auth negotiation,
+         although it isn't very wise to actually set your own */
       result = Curl_add_bufferf(req_buffer,
                                 "Content-Length: %" CURL_FORMAT_CURL_OFF_T
                                 "\r\n", postsize);
@@ -2525,24 +2518,52 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
         return result;
     }
 
-    if(postsize != 0) {
+    /* Output mime-generated headers. */
+    {
+      struct curl_slist *hdr;
+
+      for(hdr = http->sendit->curlheaders; hdr; hdr = hdr->next) {
+        result = Curl_add_bufferf(req_buffer, "%s\r\n", hdr->data);
+        if(result)
+          return result;
+      }
+    }
+
+    /* For really small posts we don't use Expect: headers at all, and for
+       the somewhat bigger ones we allow the app to disable it. Just make
+       sure that the expect100header is always set to the preferred value
+       here. */
+    ptr = Curl_checkheaders(conn, "Expect:");
+    if(ptr) {
+      data->state.expect100header =
+        Curl_compareheader(ptr, "Expect:", "100-continue");
+    }
+    else if(postsize > EXPECT_100_THRESHOLD || postsize < 0) {
       result = expect100(data, conn, req_buffer);
       if(result)
         return result;
     }
+    else
+      data->state.expect100header = FALSE;
 
-    result = Curl_add_buffer(req_buffer, "\r\n", 2); /* end of headers */
+    /* make the request end in a true CRLF */
+    result = Curl_add_buffer(req_buffer, "\r\n", 2);
     if(result)
       return result;
 
     /* set the upload size to the progress meter */
     Curl_pgrsSetUploadSize(data, postsize);
 
+    /* Read from mime structure. */
+    data->state.fread_func = (curl_read_callback) Curl_mime_read;
+    data->state.in = (void *) http->sendit;
+    http->sending = HTTPSEND_BODY;
+
     /* this sends the buffer and frees all the buffer resources */
     result = Curl_add_buffer_send(req_buffer, conn,
                                   &data->info.request_size, 0, FIRSTSOCKET);
     if(result)
-      failf(data, "Failed sending PUT request");
+      failf(data, "Failed sending POST request");
     else
       /* prepare for transfer */
       Curl_setup_transfer(conn, FIRSTSOCKET, -1, TRUE,
@@ -2550,6 +2571,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
                           postsize?&http->writebytecount:NULL);
     if(result)
       return result;
+
     break;
 
   case HTTPREQ_POST:
@@ -2592,7 +2614,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
       data->state.expect100header =
         Curl_compareheader(ptr, "Expect:", "100-continue");
     }
-    else if(postsize > TINY_INITIAL_POST_SIZE || postsize < 0) {
+    else if(postsize > EXPECT_100_THRESHOLD || postsize < 0) {
       result = expect100(data, conn, req_buffer);
       if(result)
         return result;
@@ -2606,7 +2628,7 @@ CURLcode Curl_http(struct connectdata *conn, bool *done)
          its size. */
       if(conn->httpversion != 20 &&
          !data->state.expect100header &&
-         (postsize < MAX_INITIAL_POST_SIZE))  {
+         (postsize < MAX_INITIAL_POST_SIZE)) {
         /* if we don't use expect: 100  AND
            postsize is less than MAX_INITIAL_POST_SIZE
 
@@ -2771,7 +2793,7 @@ checkhttpprefix(struct Curl_easy *data,
     failf(data, "Failed to allocate memory for conversion!");
     return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
   }
-  if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
+  if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s) + 1)) {
     /* Curl_convert_from_network calls failf if unsuccessful */
     free(scratch);
     return FALSE; /* can't return CURLE_foobar so return FALSE */
@@ -2801,6 +2823,7 @@ static bool
 checkrtspprefix(struct Curl_easy *data,
                 const char *s)
 {
+  bool result = FALSE;
 
 #ifdef CURL_DOES_CONVERSIONS
   /* convert from the network encoding using a scratch area */
@@ -2809,18 +2832,19 @@ checkrtspprefix(struct Curl_easy *data,
     failf(data, "Failed to allocate memory for conversion!");
     return FALSE; /* can't return CURLE_OUT_OF_MEMORY so return FALSE */
   }
-  if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s)+1)) {
+  if(CURLE_OK != Curl_convert_from_network(data, scratch, strlen(s) + 1)) {
     /* Curl_convert_from_network calls failf if unsuccessful */
-    free(scratch);
-    return FALSE; /* can't return CURLE_foobar so return FALSE */
+    result = FALSE; /* can't return CURLE_foobar so return FALSE */
   }
-  s = scratch;
+  else
+    result = checkprefix("RTSP/", scratch)? TRUE: FALSE;
+  free(scratch);
 #else
   (void)data; /* unused */
+  result = checkprefix("RTSP/", s)? TRUE: FALSE;
 #endif /* CURL_DOES_CONVERSIONS */
-  if(checkprefix("RTSP/", s))
-    return TRUE;
-  return FALSE;
+
+  return result;
 }
 #endif /* CURL_DISABLE_RTSP */
 
@@ -2862,14 +2886,14 @@ static CURLcode header_append(struct Curl_easy *data,
       return CURLE_OUT_OF_MEMORY;
     }
 
-    newsize=CURLMAX((k->hbuflen+ length)*3/2, data->state.headersize*2);
+    newsize = CURLMAX((k->hbuflen + length) * 3 / 2, data->state.headersize*2);
     hbufp_index = k->hbufp - data->state.headerbuff;
     newbuff = realloc(data->state.headerbuff, newsize);
     if(!newbuff) {
       failf(data, "Failed to alloc memory for big header!");
       return CURLE_OUT_OF_MEMORY;
     }
-    data->state.headersize=newsize;
+    data->state.headersize = newsize;
     data->state.headerbuff = newbuff;
     k->hbufp = data->state.headerbuff + hbufp_index;
   }
@@ -2962,7 +2986,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
     }
 
     /* decrease the size of the remaining (supposed) header line */
-    rest_length = (k->end_ptr - k->str)+1;
+    rest_length = (k->end_ptr - k->str) + 1;
     *nread -= (ssize_t)rest_length;
 
     k->str = k->end_ptr + 1; /* move past new line */
@@ -3161,6 +3185,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
           case HTTPREQ_PUT:
           case HTTPREQ_POST:
           case HTTPREQ_POST_FORM:
+          case HTTPREQ_POST_MIME:
             /* We got an error response. If this happened before the whole
              * request body has been sent we stop sending and mark the
              * connection for closure after we've read the entire response.
@@ -3288,7 +3313,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
 #define HEADER1 scratch
 #define SCRATCHSIZE 21
       CURLcode res;
-      char scratch[SCRATCHSIZE+1]; /* "HTTP/major.minor 123" */
+      char scratch[SCRATCHSIZE + 1]; /* "HTTP/major.minor 123" */
       /* We can't really convert this yet because we
          don't know if it's the 1st header line or the body.
          So we do a partial conversion into a scratch area,
@@ -3314,19 +3339,22 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
          * says. We try to allow any number here, but we cannot make
          * guarantees on future behaviors since it isn't within the protocol.
          */
+        char separator;
         nc = sscanf(HEADER1,
-                    " HTTP/%d.%d %d",
+                    " HTTP/%1d.%1d%c%3d",
                     &httpversion_major,
                     &conn->httpversion,
+                    &separator,
                     &k->httpcode);
 
         if(nc == 1 && httpversion_major == 2 &&
            1 == sscanf(HEADER1, " HTTP/2 %d", &k->httpcode)) {
           conn->httpversion = 0;
-          nc = 3;
+          nc = 4;
+          separator = ' ';
         }
 
-        if(nc==3) {
+        if((nc == 4) && (' ' == separator)) {
           conn->httpversion += 10 * httpversion_major;
 
           if(k->upgr101 == UPGR101_RECEIVED) {
@@ -3335,11 +3363,11 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
               infof(data, "Lying server, not serving HTTP/2\n");
           }
         }
-        else {
+        else if(!nc) {
           /* this is the real world, not a Nirvana
              NCSA 1.5.x returns this crap when asked for HTTP/1.1
           */
-          nc=sscanf(HEADER1, " HTTP %3d", &k->httpcode);
+          nc = sscanf(HEADER1, " HTTP %3d", &k->httpcode);
           conn->httpversion = 10;
 
           /* If user has set option HTTP200ALIASES,
@@ -3353,6 +3381,10 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
             }
           }
         }
+        else {
+          failf(data, "Unsupported HTTP version in response\n");
+          return CURLE_UNSUPPORTED_PROTOCOL;
+        }
       }
       else if(conn->handler->protocol & CURLPROTO_RTSP) {
         nc = sscanf(HEADER1,
@@ -3360,7 +3392,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
                     &rtspversion_major,
                     &conn->rtspversion,
                     &k->httpcode);
-        if(nc==3) {
+        if(nc == 3) {
           conn->rtspversion += 10 * rtspversion_major;
           conn->httpversion = 11; /* For us, RTSP acts like HTTP 1.1 */
         }
@@ -3392,7 +3424,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
            ((k->httpcode != 407) || !conn->bits.proxy_user_passwd) ) {
 
           if(data->state.resume_from &&
-             (data->set.httpreq==HTTPREQ_GET) &&
+             (data->set.httpreq == HTTPREQ_GET) &&
              (k->httpcode == 416)) {
             /* "Requested Range Not Satisfiable", just proceed and
                pretend this is no error */
@@ -3448,8 +3480,8 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
            * fields.  */
           if(data->set.timecondition)
             data->info.timecond = TRUE;
-          k->size=0;
-          k->maxdownload=0;
+          k->size = 0;
+          k->maxdownload = 0;
           k->ignorecl = TRUE; /* ignore Content-Length headers */
           break;
         default:
@@ -3471,28 +3503,32 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
     /* Check for Content-Length: header lines to get size */
     if(!k->ignorecl && !data->set.ignorecl &&
        checkprefix("Content-Length:", k->p)) {
-      curl_off_t contentlength = curlx_strtoofft(k->p+15, NULL, 10);
-      if(data->set.max_filesize &&
-         contentlength > data->set.max_filesize) {
-        failf(data, "Maximum file size exceeded");
-        return CURLE_FILESIZE_EXCEEDED;
-      }
-      if(contentlength >= 0) {
-        k->size = contentlength;
-        k->maxdownload = k->size;
-        /* we set the progress download size already at this point
-           just to make it easier for apps/callbacks to extract this
-           info as soon as possible */
-        Curl_pgrsSetDownloadSize(data, k->size);
-      }
-      else {
-        /* Negative Content-Length is really odd, and we know it
-           happens for example when older Apache servers send large
-           files */
-        streamclose(conn, "negative content-length");
-        infof(data, "Negative content-length: %" CURL_FORMAT_CURL_OFF_T
-              ", closing after transfer\n", contentlength);
+      curl_off_t contentlength;
+      if(!curlx_strtoofft(k->p + 15, NULL, 10, &contentlength)) {
+        if(data->set.max_filesize &&
+           contentlength > data->set.max_filesize) {
+          failf(data, "Maximum file size exceeded");
+          return CURLE_FILESIZE_EXCEEDED;
+        }
+        if(contentlength >= 0) {
+          k->size = contentlength;
+          k->maxdownload = k->size;
+          /* we set the progress download size already at this point
+             just to make it easier for apps/callbacks to extract this
+             info as soon as possible */
+          Curl_pgrsSetDownloadSize(data, k->size);
+        }
+        else {
+          /* Negative Content-Length is really odd, and we know it
+             happens for example when older Apache servers send large
+             files */
+          streamclose(conn, "negative content-length");
+          infof(data, "Negative content-length: %" CURL_FORMAT_CURL_OFF_T
+                ", closing after transfer\n", contentlength);
+        }
       }
+      else
+        infof(data, "Illegal Content-Length: header\n");
     }
     /* check for Content-Type: header lines to get the MIME-type */
     else if(checkprefix("Content-Type:", k->p)) {
@@ -3667,11 +3703,11 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
 
       /* if it truly stopped on a digit */
       if(ISDIGIT(*ptr)) {
-        k->offset = curlx_strtoofft(ptr, NULL, 10);
-
-        if(data->state.resume_from == k->offset)
-          /* we asked for a resume and we got it */
-          k->content_range = TRUE;
+        if(!curlx_strtoofft(ptr, NULL, 10, &k->offset)) {
+          if(data->state.resume_from == k->offset)
+            /* we asked for a resume and we got it */
+            k->content_range = TRUE;
+        }
       }
       else
         data->state.resume_from = 0; /* get everything */
@@ -3682,7 +3718,7 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
       Curl_share_lock(data, CURL_LOCK_DATA_COOKIE,
                       CURL_LOCK_ACCESS_SINGLE);
       Curl_cookie_add(data,
-                      data->cookies, TRUE, k->p+11,
+                      data->cookies, TRUE, k->p + 11,
                       /* If there is a custom-set Host: name, use it
                          here, or else use real peer host name. */
                       conn->allocptr.cookiehost?
@@ -3693,8 +3729,8 @@ CURLcode Curl_http_readwrite_headers(struct Curl_easy *data,
 #endif
     else if(checkprefix("Last-Modified:", k->p) &&
             (data->set.timecondition || data->set.get_filetime) ) {
-      time_t secs=time(NULL);
-      k->timeofdoc = curl_getdate(k->p+strlen("Last-Modified:"),
+      time_t secs = time(NULL);
+      k->timeofdoc = curl_getdate(k->p + strlen("Last-Modified:"),
                                   &secs);
       if(data->set.get_filetime)
         data->info.filetime = (long)k->timeofdoc;
diff --git a/lib/http.h b/lib/http.h
index 7ce4bd9..d2781bc 100644
--- a/lib/http.h
+++ b/lib/http.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -40,8 +40,6 @@ bool Curl_compareheader(const char *headerline,  /* line to check */
                         const char *header,   /* header keyword _with_ colon */
                         const char *content); /* content string to find */
 
-char *Curl_checkheaders(const struct connectdata *conn,
-                        const char *thisheader);
 char *Curl_copy_header_value(const char *header);
 
 char *Curl_checkProxyheaders(const struct connectdata *conn,
@@ -115,8 +113,13 @@ CURLcode Curl_http_perhapsrewind(struct connectdata *conn);
 #define MAX_INITIAL_POST_SIZE (64*1024)
 #endif
 
-#ifndef TINY_INITIAL_POST_SIZE
-#define TINY_INITIAL_POST_SIZE 1024
+/* EXPECT_100_THRESHOLD is the request body size limit for when libcurl will
+ * automatically add an "Expect: 100-continue" header in HTTP requests. When
+ * the size is unknown, it will always add it.
+ *
+ */
+#ifndef EXPECT_100_THRESHOLD
+#define EXPECT_100_THRESHOLD 1024
 #endif
 
 #endif /* CURL_DISABLE_HTTP */
@@ -125,7 +128,7 @@ CURLcode Curl_http_perhapsrewind(struct connectdata *conn);
  * HTTP unique setup
  ***************************************************************************/
 struct HTTP {
-  struct FormData *sendit;
+  curl_mimepart *sendit;
   curl_off_t postsize; /* off_t to handle large file sizes */
   const char *postdata;
 
@@ -135,7 +138,7 @@ struct HTTP {
   curl_off_t writebytecount;
 
   /* For FORM posting */
-  struct Form form;
+  curl_mimepart form;
 
   struct back {
     curl_read_callback fread_func; /* backup storage for fread pointer */
diff --git a/lib/http2.c b/lib/http2.c
index f8e23c5..9a2a1dd 100644
--- a/lib/http2.c
+++ b/lib/http2.c
@@ -28,6 +28,7 @@
 #include "http2.h"
 #include "http.h"
 #include "sendf.h"
+#include "select.h"
 #include "curl_base64.h"
 #include "strcase.h"
 #include "multiif.h"
@@ -151,6 +152,49 @@ static CURLcode http2_disconnect(struct connectdata *conn,
   return CURLE_OK;
 }
 
+/*
+ * The server may send us data at any point (e.g. PING frames). Therefore,
+ * we cannot assume that an HTTP/2 socket is dead just because it is readable.
+ *
+ * Instead, if it is readable, run Curl_connalive() to peek at the socket
+ * and distinguish between closed and data.
+ */
+static bool http2_connisdead(struct connectdata *check)
+{
+  int sval;
+  bool ret_val = TRUE;
+
+  sval = SOCKET_READABLE(check->sock[FIRSTSOCKET], 0);
+  if(sval == 0) {
+    /* timeout */
+    ret_val = FALSE;
+  }
+  else if(sval & CURL_CSELECT_ERR) {
+    /* socket is in an error state */
+    ret_val = TRUE;
+  }
+  else if(sval & CURL_CSELECT_IN) {
+    /* readable with no error. could still be closed */
+    ret_val = !Curl_connalive(check);
+  }
+
+  return ret_val;
+}
+
+
+static unsigned int http2_conncheck(struct connectdata *check,
+                                    unsigned int checks_to_perform)
+{
+  unsigned int ret_val = CONNRESULT_NONE;
+
+  if(checks_to_perform & CONNCHECK_ISDEAD) {
+    if(http2_connisdead(check))
+      ret_val |= CONNRESULT_DEAD;
+  }
+
+  return ret_val;
+}
+
 /* called from Curl_http_setup_conn */
 void Curl_http2_setup_req(struct Curl_easy *data)
 {
@@ -196,6 +240,7 @@ static const struct Curl_handler Curl_handler_http2 = {
   http2_perform_getsock,                /* perform_getsock */
   http2_disconnect,                     /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  http2_conncheck,                      /* connection_check */
   PORT_HTTP,                            /* defport */
   CURLPROTO_HTTP,                       /* protocol */
   PROTOPT_STREAM                        /* flags */
@@ -216,6 +261,7 @@ static const struct Curl_handler Curl_handler_http2_ssl = {
   http2_perform_getsock,                /* perform_getsock */
   http2_disconnect,                     /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  http2_conncheck,                      /* connection_check */
   PORT_HTTP,                            /* defport */
   CURLPROTO_HTTPS,                      /* protocol */
   PROTOPT_SSL | PROTOPT_STREAM          /* flags */
@@ -338,12 +384,12 @@ char *curl_pushheader_byname(struct curl_pushheaders *h, const char *header)
     struct HTTP *stream = h->data->req.protop;
     size_t len = strlen(header);
     size_t i;
-    for(i=0; i<stream->push_headers_used; i++) {
+    for(i = 0; i<stream->push_headers_used; i++) {
       if(!strncmp(header, stream->push_headers[i], len)) {
         /* sub-match, make sure that it is followed by a colon */
         if(stream->push_headers[i][len] != ':')
           continue;
-        return &stream->push_headers[i][len+1];
+        return &stream->push_headers[i][len + 1];
       }
     }
   }
@@ -418,7 +464,7 @@ static int push_promise(struct Curl_easy *data,
                               data->multi->push_userp);
 
     /* free the headers again */
-    for(i=0; i<stream->push_headers_used; i++)
+    for(i = 0; i<stream->push_headers_used; i++)
       free(stream->push_headers[i]);
     free(stream->push_headers);
     stream->push_headers = NULL;
@@ -1536,7 +1582,7 @@ static ssize_t http2_recv(struct connectdata *conn, int sockindex,
       failf(data, "nghttp2_session_mem_recv() returned %d:%s\n",
             rv, nghttp2_strerror((int)rv));
       *err = CURLE_RECV_ERROR;
-      return 0;
+      return -1;
     }
     DEBUGF(infof(data, "nghttp2_session_mem_recv() returns %zd\n", rv));
     if(nread == rv) {
@@ -1554,7 +1600,7 @@ static ssize_t http2_recv(struct connectdata *conn, int sockindex,
     rv = h2_session_send(data, httpc->h2);
     if(rv != 0) {
       *err = CURLE_SEND_ERROR;
-      return 0;
+      return -1;
     }
 
     if(should_close_session(httpc)) {
@@ -1909,6 +1955,7 @@ static ssize_t http2_send(struct connectdata *conn, int sockindex,
   switch(conn->data->set.httpreq) {
   case HTTPREQ_POST:
   case HTTPREQ_POST_FORM:
+  case HTTPREQ_POST_MIME:
   case HTTPREQ_PUT:
     if(conn->data->state.infilesize != -1)
       stream->upload_left = conn->data->state.infilesize;
@@ -2134,12 +2181,15 @@ CURLcode Curl_http2_switched(struct connectdata *conn,
   return CURLE_OK;
 }
 
-void Curl_http2_add_child(struct Curl_easy *parent, struct Curl_easy *child,
-                          bool exclusive)
+CURLcode Curl_http2_add_child(struct Curl_easy *parent,
+                              struct Curl_easy *child,
+                              bool exclusive)
 {
   if(parent) {
     struct Curl_http2_dep **tail;
     struct Curl_http2_dep *dep = calloc(1, sizeof(struct Curl_http2_dep));
+    if(!dep)
+      return CURLE_OUT_OF_MEMORY;
     dep->data = child;
 
     if(parent->set.stream_dependents && exclusive) {
@@ -2170,6 +2220,7 @@ void Curl_http2_add_child(struct Curl_easy *parent, struct Curl_easy *child,
 
   child->set.stream_depends_on = parent;
   child->set.stream_depends_e = exclusive;
+  return CURLE_OK;
 }
 
 void Curl_http2_remove_child(struct Curl_easy *parent, struct Curl_easy *child)
diff --git a/lib/http2.h b/lib/http2.h
index f405b3a..f597c80 100644
--- a/lib/http2.h
+++ b/lib/http2.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -53,8 +53,9 @@ void Curl_http2_setup_conn(struct connectdata *conn);
 void Curl_http2_setup_req(struct Curl_easy *data);
 void Curl_http2_done(struct connectdata *conn, bool premature);
 CURLcode Curl_http2_done_sending(struct connectdata *conn);
-void Curl_http2_add_child(struct Curl_easy *parent, struct Curl_easy *child,
-                          bool exclusive);
+CURLcode Curl_http2_add_child(struct Curl_easy *parent,
+                              struct Curl_easy *child,
+                              bool exclusive);
 void Curl_http2_remove_child(struct Curl_easy *parent,
                              struct Curl_easy *child);
 void Curl_http2_cleanup_dependencies(struct Curl_easy *data);
diff --git a/lib/http_chunks.c b/lib/http_chunks.c
index 1bdf697..92d7731 100644
--- a/lib/http_chunks.c
+++ b/lib/http_chunks.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -86,8 +86,8 @@ static bool Curl_isxdigit(char digit)
 void Curl_httpchunk_init(struct connectdata *conn)
 {
   struct Curl_chunker *chunk = &conn->chunk;
-  chunk->hexindex=0;        /* start at 0 */
-  chunk->dataleft=0;        /* no data left yet! */
+  chunk->hexindex = 0;      /* start at 0 */
+  chunk->dataleft = 0;      /* no data left yet! */
   chunk->state = CHUNK_HEX; /* we get hex first! */
 }
 
@@ -107,7 +107,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
                               ssize_t datalen,
                               ssize_t *wrotep)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
   struct Curl_easy *data = conn->data;
   struct Curl_chunker *ch = &conn->chunk;
   struct SingleRequest *k = &data->req;
@@ -147,7 +147,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
           return CHUNKE_ILLEGAL_HEX;
 
         /* length and datap are unmodified */
-        ch->hexbuffer[ch->hexindex]=0;
+        ch->hexbuffer[ch->hexindex] = 0;
 
         /* convert to host encoding before calling strtoul */
         result = Curl_convert_from_network(conn->data, ch->hexbuffer,
@@ -158,9 +158,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
           return CHUNKE_ILLEGAL_HEX;
         }
 
-        ch->datasize=curlx_strtoofft(ch->hexbuffer, &endptr, 16);
-        if((ch->datasize == CURL_OFF_T_MAX) && (errno == ERANGE))
-          /* overflow is an error */
+        if(curlx_strtoofft(ch->hexbuffer, &endptr, 16, &ch->datasize))
           return CHUNKE_ILLEGAL_HEX;
         ch->state = CHUNK_LF; /* now wait for the CRLF */
       }
@@ -172,7 +170,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
         /* we're now expecting data to come, unless size was zero! */
         if(0 == ch->datasize) {
           ch->state = CHUNK_TRAILER; /* now check for trailers */
-          conn->trlPos=0;
+          conn->trlPos = 0;
         }
         else
           ch->state = CHUNK_DATA;
@@ -259,9 +257,9 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
 
         if(conn->trlPos) {
           /* we allocate trailer with 3 bytes extra room to fit this */
-          conn->trailer[conn->trlPos++]=0x0d;
-          conn->trailer[conn->trlPos++]=0x0a;
-          conn->trailer[conn->trlPos]=0;
+          conn->trailer[conn->trlPos++] = 0x0d;
+          conn->trailer[conn->trlPos++] = 0x0a;
+          conn->trailer[conn->trlPos] = 0;
 
           /* Convert to host encoding before calling Curl_client_write */
           result = Curl_convert_from_network(conn->data, conn->trailer,
@@ -277,7 +275,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
             if(result)
               return CHUNKE_WRITE_ERROR;
           }
-          conn->trlPos=0;
+          conn->trlPos = 0;
           ch->state = CHUNK_TRAILER_CR;
           if(*datap == 0x0a)
             /* already on the LF */
@@ -301,7 +299,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
             ptr = realloc(conn->trailer, conn->trlMax + 3);
           }
           else {
-            conn->trlMax=128;
+            conn->trlMax = 128;
             ptr = malloc(conn->trlMax + 3);
           }
           if(!ptr)
diff --git a/lib/http_ntlm.c b/lib/http_ntlm.c
index 8a78bd2..0f1edcf 100644
--- a/lib/http_ntlm.c
+++ b/lib/http_ntlm.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -37,11 +37,14 @@
 #include "sendf.h"
 #include "strcase.h"
 #include "http_ntlm.h"
+#include "curl_ntlm_core.h"
 #include "curl_ntlm_wb.h"
 #include "vauth/vauth.h"
 #include "url.h"
 
-#if defined(USE_NSS)
+/* SSL backend-specific #if branches in this file must be kept in the order
+   documented in curl_ntlm_core. */
+#if defined(NTLM_NEEDS_NSS_INIT)
 #include "vtls/nssg.h"
 #elif defined(USE_WINDOWS_SSPI)
 #include "curl_sspi.h"
@@ -129,7 +132,7 @@ CURLcode Curl_output_ntlm(struct connectdata *conn, bool proxy)
   DEBUGASSERT(conn);
   DEBUGASSERT(conn->data);
 
-#ifdef USE_NSS
+#if defined(NTLM_NEEDS_NSS_INIT)
   if(CURLE_OK != Curl_nss_force_init(conn->data))
     return CURLE_OUT_OF_MEMORY;
 #endif
@@ -170,8 +173,8 @@ CURLcode Curl_output_ntlm(struct connectdata *conn, bool proxy)
   case NTLMSTATE_TYPE1:
   default: /* for the weird cases we (re)start here */
     /* Create a type-1 message */
-    result = Curl_auth_create_ntlm_type1_message(userp, passwdp, ntlm, &base64,
-                                                 &len);
+    result = Curl_auth_create_ntlm_type1_message(conn->data, userp, passwdp,
+                                                 ntlm, &base64, &len);
     if(result)
       return result;
 
diff --git a/lib/http_proxy.c b/lib/http_proxy.c
index 9894e2e..dff9d23 100644
--- a/lib/http_proxy.c
+++ b/lib/http_proxy.c
@@ -22,11 +22,11 @@
 
 #include "curl_setup.h"
 
+#include "http_proxy.h"
+
 #if !defined(CURL_DISABLE_PROXY) && !defined(CURL_DISABLE_HTTP)
 
-#include "urldata.h"
 #include <curl/curl.h>
-#include "http_proxy.h"
 #include "sendf.h"
 #include "http.h"
 #include "url.h"
@@ -135,35 +135,73 @@ CURLcode Curl_proxy_connect(struct connectdata *conn, int sockindex)
   return CURLE_OK;
 }
 
-#define CONNECT_BUFFER_SIZE 16384
+bool Curl_connect_complete(struct connectdata *conn)
+{
+  return !conn->connect_state ||
+    (conn->connect_state->tunnel_state == TUNNEL_COMPLETE);
+}
+
+bool Curl_connect_ongoing(struct connectdata *conn)
+{
+  return conn->connect_state &&
+    (conn->connect_state->tunnel_state != TUNNEL_COMPLETE);
+}
+
+static CURLcode connect_init(struct connectdata *conn, bool reinit)
+{
+  struct http_connect_state *s;
+  if(!reinit) {
+    DEBUGASSERT(!conn->connect_state);
+    s = calloc(1, sizeof(struct http_connect_state));
+    if(!s)
+      return CURLE_OUT_OF_MEMORY;
+    infof(conn->data, "allocate connect buffer!\n");
+    conn->connect_state = s;
+  }
+  else {
+    DEBUGASSERT(conn->connect_state);
+    s = conn->connect_state;
+  }
+  s->tunnel_state = TUNNEL_INIT;
+  s->keepon = TRUE;
+  s->line_start = s->connect_buffer;
+  s->ptr = s->line_start;
+  s->cl = 0;
+  return CURLE_OK;
+}
+
+static void connect_done(struct connectdata *conn)
+{
+  struct http_connect_state *s = conn->connect_state;
+  s->tunnel_state = TUNNEL_COMPLETE;
+  infof(conn->data, "CONNECT phase completed!\n");
+}
 
 static CURLcode CONNECT(struct connectdata *conn,
                         int sockindex,
                         const char *hostname,
                         int remote_port)
 {
-  int subversion=0;
-  struct Curl_easy *data=conn->data;
+  int subversion = 0;
+  struct Curl_easy *data = conn->data;
   struct SingleRequest *k = &data->req;
   CURLcode result;
   curl_socket_t tunnelsocket = conn->sock[sockindex];
-  curl_off_t cl=0;
   bool closeConnection = FALSE;
-  bool chunked_encoding = FALSE;
   time_t check;
+  struct http_connect_state *s = conn->connect_state;
 
 #define SELECT_OK      0
 #define SELECT_ERROR   1
 #define SELECT_TIMEOUT 2
-  int error = SELECT_OK;
 
-  if(conn->tunnel_state[sockindex] == TUNNEL_COMPLETE)
+  if(Curl_connect_complete(conn))
     return CURLE_OK; /* CONNECT is already completed */
 
   conn->bits.proxy_connect_closed = FALSE;
 
   do {
-    if(TUNNEL_INIT == conn->tunnel_state[sockindex]) {
+    if(TUNNEL_INIT == s->tunnel_state) {
       /* BEGIN CONNECT PHASE */
       char *host_port;
       Curl_send_buffer *req_buffer;
@@ -196,8 +234,8 @@ static CURLcode CONNECT(struct connectdata *conn,
 
       if(!result) {
         char *host = NULL;
-        const char *proxyconn="";
-        const char *useragent="";
+        const char *proxyconn = "";
+        const char *useragent = "";
         const char *http = (conn->http_proxy.proxytype == CURLPROXY_HTTP_1_0) ?
           "1.0" : "1.1";
         bool ipv6_ip = conn->bits.ipv6_ip;
@@ -206,7 +244,7 @@ static CURLcode CONNECT(struct connectdata *conn,
         /* the hostname may be different */
         if(hostname != conn->host.name)
           ipv6_ip = (strchr(hostname, ':') != NULL);
-        hostheader= /* host:port with IPv6 support */
+        hostheader = /* host:port with IPv6 support */
           aprintf("%s%s%s:%hu", ipv6_ip?"[":"", hostname, ipv6_ip?"]":"",
                   remote_port);
         if(!hostheader) {
@@ -271,65 +309,46 @@ static CURLcode CONNECT(struct connectdata *conn,
       if(result)
         return result;
 
-      conn->tunnel_state[sockindex] = TUNNEL_CONNECT;
+      s->tunnel_state = TUNNEL_CONNECT;
+      s->perline = 0;
     } /* END CONNECT PHASE */
 
     check = Curl_timeleft(data, NULL, TRUE);
     if(check <= 0) {
       failf(data, "Proxy CONNECT aborted due to timeout");
-      return CURLE_RECV_ERROR;
+      return CURLE_OPERATION_TIMEDOUT;
     }
 
     if(!Curl_conn_data_pending(conn, sockindex))
       /* return so we'll be called again polling-style */
       return CURLE_OK;
-    DEBUGF(infof(data, "Read response immediately from proxy CONNECT\n"));
 
     /* at this point, the tunnel_connecting phase is over. */
 
     { /* READING RESPONSE PHASE */
-      size_t nread;   /* total size read */
-      int perline; /* count bytes per line */
-      int keepon=TRUE;
-      ssize_t gotbytes;
-      char *ptr;
-      char *line_start;
+      int error = SELECT_OK;
 
-      ptr = conn->connect_buffer;
-      line_start = ptr;
+      while(s->keepon && !error) {
+        ssize_t gotbytes;
 
-      nread = 0;
-      perline = 0;
-
-      while(nread < (size_t)CONNECT_BUFFER_SIZE && keepon && !error) {
-        if(Curl_pgrsUpdate(conn))
-          return CURLE_ABORTED_BY_CALLBACK;
-
-        if(ptr >= &conn->connect_buffer[CONNECT_BUFFER_SIZE]) {
+        /* make sure we have space to read more data */
+        if(s->ptr >= &s->connect_buffer[CONNECT_BUFFER_SIZE]) {
           failf(data, "CONNECT response too large!");
           return CURLE_RECV_ERROR;
         }
 
-        check = Curl_timeleft(data, NULL, TRUE);
-        if(check <= 0) {
-          failf(data, "Proxy CONNECT aborted due to timeout");
-          error = SELECT_TIMEOUT; /* already too little time */
-          break;
-        }
-
         /* Read one byte at a time to avoid a race condition. Wait at most one
            second before looping to ensure continuous pgrsUpdates. */
-        result = Curl_read(conn, tunnelsocket, ptr, 1, &gotbytes);
-        if(result == CURLE_AGAIN) {
-          if(SOCKET_READABLE(tunnelsocket, check<1000L?check:1000) == -1) {
-            error = SELECT_ERROR;
-            failf(data, "Proxy CONNECT aborted due to select/poll error");
-            break;
-          }
-          continue;
-        }
+        result = Curl_read(conn, tunnelsocket, s->ptr, 1, &gotbytes);
+        if(result == CURLE_AGAIN)
+          /* socket buffer drained, return */
+          return CURLE_OK;
+
+        if(Curl_pgrsUpdate(conn))
+          return CURLE_ABORTED_BY_CALLBACK;
+
         if(result) {
-          keepon = FALSE;
+          s->keepon = FALSE;
           break;
         }
         else if(gotbytes <= 0) {
@@ -343,24 +362,22 @@ static CURLcode CONNECT(struct connectdata *conn,
             error = SELECT_ERROR;
             failf(data, "Proxy CONNECT aborted");
           }
-          keepon = FALSE;
+          s->keepon = FALSE;
           break;
         }
 
-        /* We got a byte of data */
-        nread++;
 
-        if(keepon > TRUE) {
+        if(s->keepon > TRUE) {
           /* This means we are currently ignoring a response-body */
 
-          nread = 0; /* make next read start over in the read buffer */
-          ptr = conn->connect_buffer;
-          if(cl) {
+          s->ptr = s->connect_buffer;
+          if(s->cl) {
             /* A Content-Length based body: simply count down the counter
                and make sure to break out of the loop when we're done! */
-            cl--;
-            if(cl <= 0) {
-              keepon = FALSE;
+            s->cl--;
+            if(s->cl <= 0) {
+              s->keepon = FALSE;
+              s->tunnel_state = TUNNEL_COMPLETE;
               break;
             }
           }
@@ -372,28 +389,29 @@ static CURLcode CONNECT(struct connectdata *conn,
 
             /* now parse the chunked piece of data so that we can
                properly tell when the stream ends */
-            r = Curl_httpchunk_read(conn, ptr, 1, &tookcareof);
+            r = Curl_httpchunk_read(conn, s->ptr, 1, &tookcareof);
             if(r == CHUNKE_STOP) {
               /* we're done reading chunks! */
               infof(data, "chunk reading DONE\n");
-              keepon = FALSE;
+              s->keepon = FALSE;
               /* we did the full CONNECT treatment, go COMPLETE */
-              conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
+              s->tunnel_state = TUNNEL_COMPLETE;
             }
           }
           continue;
         }
 
-        perline++; /* amount of bytes in this line so far */
+        s->perline++; /* amount of bytes in this line so far */
 
         /* if this is not the end of a header line then continue */
-        if(*ptr != 0x0a) {
-          ptr++;
+        if(*s->ptr != 0x0a) {
+          s->ptr++;
           continue;
         }
 
         /* convert from the network encoding */
-        result = Curl_convert_from_network(data, line_start, perline);
+        result = Curl_convert_from_network(data, s->line_start,
+                                           (size_t)s->perline);
         /* Curl_convert_from_network calls failf if unsuccessful */
         if(result)
           return result;
@@ -401,7 +419,7 @@ static CURLcode CONNECT(struct connectdata *conn,
         /* output debug if that is requested */
         if(data->set.verbose)
           Curl_debug(data, CURLINFO_HEADER_IN,
-                     line_start, (size_t)perline, conn);
+                     s->line_start, (size_t)s->perline, conn);
 
         if(!data->set.suppress_connect_headers) {
           /* send the header to the callback */
@@ -409,35 +427,34 @@ static CURLcode CONNECT(struct connectdata *conn,
           if(data->set.include_header)
             writetype |= CLIENTWRITE_BODY;
 
-          result = Curl_client_write(conn, writetype, line_start, perline);
+          result = Curl_client_write(conn, writetype,
+                                     s->line_start, s->perline);
           if(result)
             return result;
         }
 
-        data->info.header_size += (long)perline;
-        data->req.headerbytecount += (long)perline;
+        data->info.header_size += (long)s->perline;
+        data->req.headerbytecount += (long)s->perline;
 
         /* Newlines are CRLF, so the CR is ignored as the line isn't
            really terminated until the LF comes. Treat a following CR
            as end-of-headers as well.*/
 
-        if(('\r' == line_start[0]) ||
-           ('\n' == line_start[0])) {
+        if(('\r' == s->line_start[0]) ||
+           ('\n' == s->line_start[0])) {
           /* end of response-headers from the proxy */
-          nread = 0; /* make next read start over in the read
-                        buffer */
-          ptr = conn->connect_buffer;
+          s->ptr = s->connect_buffer;
           if((407 == k->httpcode) && !data->state.authproblem) {
             /* If we get a 407 response code with content length
                when we have no auth problem, we must ignore the
                whole response-body */
-            keepon = 2;
+            s->keepon = 2;
 
-            if(cl) {
+            if(s->cl) {
               infof(data, "Ignore %" CURL_FORMAT_CURL_OFF_T
-                    " bytes of response-body\n", cl);
+                    " bytes of response-body\n", s->cl);
             }
-            else if(chunked_encoding) {
+            else if(s->chunked_encoding) {
               CHUNKcode r;
 
               infof(data, "Ignore chunked response-body\n");
@@ -448,46 +465,46 @@ static CURLcode CONNECT(struct connectdata *conn,
                  function returns! */
               k->ignorebody = TRUE;
 
-              if(line_start[1] == '\n') {
+              if(s->line_start[1] == '\n') {
                 /* this can only be a LF if the letter at index 0
                    was a CR */
-                line_start++;
+                s->line_start++;
               }
 
               /* now parse the chunked piece of data so that we can
                  properly tell when the stream ends */
-              r = Curl_httpchunk_read(conn, line_start + 1, 1, &gotbytes);
+              r = Curl_httpchunk_read(conn, s->line_start + 1, 1, &gotbytes);
               if(r == CHUNKE_STOP) {
                 /* we're done reading chunks! */
                 infof(data, "chunk reading DONE\n");
-                keepon = FALSE;
-                /* we did the full CONNECT treatment, go to
-                   COMPLETE */
-                conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
+                s->keepon = FALSE;
+                /* we did the full CONNECT treatment, go to COMPLETE */
+                s->tunnel_state = TUNNEL_COMPLETE;
               }
             }
             else {
               /* without content-length or chunked encoding, we
                  can't keep the connection alive since the close is
                  the end signal so we bail out at once instead */
-              keepon = FALSE;
+              s->keepon = FALSE;
             }
           }
           else
-            keepon = FALSE;
-          /* we did the full CONNECT treatment, go to COMPLETE */
-          conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
+            s->keepon = FALSE;
+          if(!s->cl)
+            /* we did the full CONNECT treatment, go to COMPLETE */
+            s->tunnel_state = TUNNEL_COMPLETE;
           continue;
         }
 
-        line_start[perline] = 0; /* zero terminate the buffer */
-        if((checkprefix("WWW-Authenticate:", line_start) &&
+        s->line_start[s->perline] = 0; /* zero terminate the buffer */
+        if((checkprefix("WWW-Authenticate:", s->line_start) &&
             (401 == k->httpcode)) ||
-           (checkprefix("Proxy-authenticate:", line_start) &&
+           (checkprefix("Proxy-authenticate:", s->line_start) &&
             (407 == k->httpcode))) {
 
           bool proxy = (k->httpcode == 407) ? TRUE : FALSE;
-          char *auth = Curl_copy_header_value(line_start);
+          char *auth = Curl_copy_header_value(s->line_start);
           if(!auth)
             return CURLE_OUT_OF_MEMORY;
 
@@ -498,7 +515,7 @@ static CURLcode CONNECT(struct connectdata *conn,
           if(result)
             return result;
         }
-        else if(checkprefix("Content-Length:", line_start)) {
+        else if(checkprefix("Content-Length:", s->line_start)) {
           if(k->httpcode/100 == 2) {
             /* A client MUST ignore any Content-Length or Transfer-Encoding
                header fields received in a successful response to CONNECT.
@@ -507,13 +524,13 @@ static CURLcode CONNECT(struct connectdata *conn,
                   k->httpcode);
           }
           else {
-            cl = curlx_strtoofft(line_start +
-                                 strlen("Content-Length:"), NULL, 10);
+            (void)curlx_strtoofft(s->line_start +
+                                  strlen("Content-Length:"), NULL, 10, &s->cl);
           }
         }
-        else if(Curl_compareheader(line_start, "Connection:", "close"))
+        else if(Curl_compareheader(s->line_start, "Connection:", "close"))
           closeConnection = TRUE;
-        else if(checkprefix("Transfer-Encoding:", line_start)) {
+        else if(checkprefix("Transfer-Encoding:", s->line_start)) {
           if(k->httpcode/100 == 2) {
             /* A client MUST ignore any Content-Length or Transfer-Encoding
                header fields received in a successful response to CONNECT.
@@ -521,26 +538,27 @@ static CURLcode CONNECT(struct connectdata *conn,
             infof(data, "Ignoring Transfer-Encoding in "
                   "CONNECT %03d response\n", k->httpcode);
           }
-          else if(Curl_compareheader(line_start,
+          else if(Curl_compareheader(s->line_start,
                                      "Transfer-Encoding:", "chunked")) {
             infof(data, "CONNECT responded chunked\n");
-            chunked_encoding = TRUE;
+            s->chunked_encoding = TRUE;
             /* init our chunky engine */
             Curl_httpchunk_init(conn);
           }
         }
-        else if(Curl_compareheader(line_start, "Proxy-Connection:", "close"))
+        else if(Curl_compareheader(s->line_start,
+                                   "Proxy-Connection:", "close"))
           closeConnection = TRUE;
-        else if(2 == sscanf(line_start, "HTTP/1.%d %d",
+        else if(2 == sscanf(s->line_start, "HTTP/1.%d %d",
                             &subversion,
                             &k->httpcode)) {
           /* store the HTTP code from the proxy */
           data->info.httpproxycode = k->httpcode;
         }
 
-        perline = 0; /* line starts over here */
-        ptr = conn->connect_buffer;
-        line_start = ptr;
+        s->perline = 0; /* line starts over here */
+        s->ptr = s->connect_buffer;
+        s->line_start = s->ptr;
       } /* while there's buffer left and loop is requested */
 
       if(Curl_pgrsUpdate(conn))
@@ -549,7 +567,7 @@ static CURLcode CONNECT(struct connectdata *conn,
       if(error)
         return CURLE_RECV_ERROR;
 
-      if(data->info.httpproxycode != 200) {
+      if(data->info.httpproxycode/100 != 2) {
         /* Deal with the possibly already received authenticate
            headers. 'newurl' is set to a new URL if we must loop. */
         result = Curl_http_auth_act(conn);
@@ -574,19 +592,17 @@ static CURLcode CONNECT(struct connectdata *conn,
     /* If we are supposed to continue and request a new URL, which basically
      * means the HTTP authentication is still going on so if the tunnel
      * is complete we start over in INIT state */
-    if(data->req.newurl &&
-       (TUNNEL_COMPLETE == conn->tunnel_state[sockindex])) {
-      conn->tunnel_state[sockindex] = TUNNEL_INIT;
-      infof(data, "TUNNEL_STATE switched to: %d\n",
-            conn->tunnel_state[sockindex]);
+    if(data->req.newurl && (TUNNEL_COMPLETE == s->tunnel_state)) {
+      connect_init(conn, TRUE); /* reinit */
     }
 
   } while(data->req.newurl);
 
-  if(200 != data->req.httpcode) {
+  if(data->info.httpproxycode/100 != 2) {
     if(closeConnection && data->req.newurl) {
       conn->bits.proxy_connect_closed = TRUE;
       infof(data, "Connect me again please\n");
+      connect_done(conn);
     }
     else {
       free(data->req.newurl);
@@ -598,7 +614,7 @@ static CURLcode CONNECT(struct connectdata *conn,
     }
 
     /* to back to init state */
-    conn->tunnel_state[sockindex] = TUNNEL_INIT;
+    s->tunnel_state = TUNNEL_INIT;
 
     if(conn->bits.proxy_connect_closed)
       /* this is not an error, just part of the connection negotiation */
@@ -608,7 +624,7 @@ static CURLcode CONNECT(struct connectdata *conn,
     return CURLE_RECV_ERROR;
   }
 
-  conn->tunnel_state[sockindex] = TUNNEL_COMPLETE;
+  s->tunnel_state = TUNNEL_COMPLETE;
 
   /* If a proxy-authorization header was used for the proxy, then we should
      make sure that it isn't accidentally used for the document request
@@ -618,13 +634,24 @@ static CURLcode CONNECT(struct connectdata *conn,
 
   data->state.authproxy.done = TRUE;
 
-  infof(data, "Proxy replied OK to CONNECT request\n");
+  infof(data, "Proxy replied %d to CONNECT request\n",
+        data->info.httpproxycode);
   data->req.ignorebody = FALSE; /* put it (back) to non-ignore state */
   conn->bits.rewindaftersend = FALSE; /* make sure this isn't set for the
                                          document request  */
   return CURLE_OK;
 }
 
+void Curl_connect_free(struct Curl_easy *data)
+{
+  struct connectdata *conn = data->easy_conn;
+  struct http_connect_state *s = conn->connect_state;
+  if(s) {
+    free(s);
+    conn->connect_state = NULL;
+  }
+}
+
 /*
  * Curl_proxyCONNECT() requires that we're connected to a HTTP proxy. This
  * function will issue the necessary commands to get a seamless tunnel through
@@ -637,20 +664,23 @@ CURLcode Curl_proxyCONNECT(struct connectdata *conn,
                            int remote_port)
 {
   CURLcode result;
-  if(TUNNEL_INIT == conn->tunnel_state[sockindex]) {
-    if(!conn->connect_buffer) {
-      conn->connect_buffer = malloc(CONNECT_BUFFER_SIZE);
-      if(!conn->connect_buffer)
-        return CURLE_OUT_OF_MEMORY;
-    }
+  if(!conn->connect_state) {
+    result = connect_init(conn, FALSE);
+    if(result)
+      return result;
   }
   result = CONNECT(conn, sockindex, hostname, remote_port);
 
-  if(result || (TUNNEL_COMPLETE == conn->tunnel_state[sockindex]))
-    Curl_safefree(conn->connect_buffer);
+  if(result || Curl_connect_complete(conn))
+    connect_done(conn);
 
   return result;
 }
 
+#else
+void Curl_connect_free(struct Curl_easy *data)
+{
+  (void)data;
+}
 
 #endif /* CURL_DISABLE_PROXY */
diff --git a/lib/http_proxy.h b/lib/http_proxy.h
index cbb1ab4..e19fa85 100644
--- a/lib/http_proxy.h
+++ b/lib/http_proxy.h
@@ -22,6 +22,9 @@
  *
  ***************************************************************************/
 
+#include "curl_setup.h"
+#include "urldata.h"
+
 #if !defined(CURL_DISABLE_PROXY) && !defined(CURL_DISABLE_HTTP)
 /* ftp can use this as well */
 CURLcode Curl_proxyCONNECT(struct connectdata *conn,
@@ -33,9 +36,16 @@ CURLcode Curl_proxyCONNECT(struct connectdata *conn,
 
 CURLcode Curl_proxy_connect(struct connectdata *conn, int sockindex);
 
+bool Curl_connect_complete(struct connectdata *conn);
+bool Curl_connect_ongoing(struct connectdata *conn);
+
 #else
 #define Curl_proxyCONNECT(x,y,z,w) CURLE_NOT_BUILT_IN
 #define Curl_proxy_connect(x,y) CURLE_OK
+#define Curl_connect_complete(x) CURLE_OK
+#define Curl_connect_ongoing(x) FALSE
 #endif
 
+void Curl_connect_free(struct Curl_easy *data);
+
 #endif /* HEADER_CURL_HTTP_PROXY_H */
diff --git a/lib/if2ip.c b/lib/if2ip.c
index 4de81be..ce38ea1 100644
--- a/lib/if2ip.c
+++ b/lib/if2ip.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -71,6 +71,8 @@ unsigned int Curl_ipv6_scope(const struct sockaddr *sa)
     const unsigned char *b = sa6->sin6_addr.s6_addr;
     unsigned short w = (unsigned short) ((b[0] << 8) | b[1]);
 
+    if((b[0] & 0xFE) == 0xFC) /* Handle ULAs */
+      return IPV6_SCOPE_UNIQUELOCAL;
     switch(w & 0xFFC0) {
     case 0xFE80:
       return IPV6_SCOPE_LINKLOCAL;
@@ -101,7 +103,7 @@ bool Curl_if_is_interface_name(const char *interf)
   struct ifaddrs *iface, *head;
 
   if(getifaddrs(&head) >= 0) {
-    for(iface=head; iface != NULL; iface=iface->ifa_next) {
+    for(iface = head; iface != NULL; iface = iface->ifa_next) {
       if(strcasecompare(iface->ifa_name, interf)) {
         result = TRUE;
         break;
@@ -121,15 +123,15 @@ if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
 
 #ifndef ENABLE_IPV6
   (void) remote_scope;
-
-#ifndef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
-  (void) remote_scope_id;
 #endif
 
+#if !defined(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID) || \
+    !defined(ENABLE_IPV6)
+  (void) remote_scope_id;
 #endif
 
   if(getifaddrs(&head) >= 0) {
-    for(iface = head; iface != NULL; iface=iface->ifa_next) {
+    for(iface = head; iface != NULL; iface = iface->ifa_next) {
       if(iface->ifa_addr != NULL) {
         if(iface->ifa_addr->sa_family == af) {
           if(strcasecompare(iface->ifa_name, interf)) {
@@ -228,7 +230,7 @@ if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
     return IF2IP_NOT_FOUND;
 
   memset(&req, 0, sizeof(req));
-  memcpy(req.ifr_name, interf, len+1);
+  memcpy(req.ifr_name, interf, len + 1);
   req.ifr_addr.sa_family = AF_INET;
 
   if(ioctl(dummy, SIOCGIFADDR, &req) < 0) {
diff --git a/lib/if2ip.h b/lib/if2ip.h
index f3a7ff0..a90e662 100644
--- a/lib/if2ip.h
+++ b/lib/if2ip.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -27,7 +27,8 @@
 #define IPV6_SCOPE_GLOBAL       0       /* Global scope. */
 #define IPV6_SCOPE_LINKLOCAL    1       /* Link-local scope. */
 #define IPV6_SCOPE_SITELOCAL    2       /* Site-local scope (deprecated). */
-#define IPV6_SCOPE_NODELOCAL    3       /* Loopback. */
+#define IPV6_SCOPE_UNIQUELOCAL  3       /* Unique local */
+#define IPV6_SCOPE_NODELOCAL    4       /* Loopback. */
 
 unsigned int Curl_ipv6_scope(const struct sockaddr *sa);
 
diff --git a/lib/imap.c b/lib/imap.c
index b528f77..954d18f 100644
--- a/lib/imap.c
+++ b/lib/imap.c
@@ -68,6 +68,7 @@
 #include "http.h" /* for HTTP proxy tunnel stuff */
 #include "socks.h"
 #include "imap.h"
+#include "mime.h"
 #include "strtoofft.h"
 #include "strcase.h"
 #include "vtls/vtls.h"
@@ -128,6 +129,7 @@ const struct Curl_handler Curl_handler_imap = {
   ZERO_NULL,                        /* perform_getsock */
   imap_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_IMAP,                        /* defport */
   CURLPROTO_IMAP,                   /* protocol */
   PROTOPT_CLOSEACTION|              /* flags */
@@ -154,69 +156,22 @@ const struct Curl_handler Curl_handler_imaps = {
   ZERO_NULL,                        /* perform_getsock */
   imap_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_IMAPS,                       /* defport */
   CURLPROTO_IMAPS,                  /* protocol */
   PROTOPT_CLOSEACTION | PROTOPT_SSL /* flags */
 };
 #endif
 
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed IMAP protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_imap_proxy = {
-  "IMAP",                               /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_IMAP,                            /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed IMAPS protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_imaps_proxy = {
-  "IMAPS",                              /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_IMAPS,                           /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-#endif
-#endif
+#define IMAP_RESP_OK       1
+#define IMAP_RESP_NOT_OK   2
+#define IMAP_RESP_PREAUTH  3
 
 /* SASL parameters for the imap protocol */
 static const struct SASLproto saslimap = {
   "imap",                     /* The service name */
   '+',                        /* Code received when continuation is expected */
-  'O',                        /* Code to receive upon authentication success */
+  IMAP_RESP_OK,               /* Code to receive upon authentication success */
   0,                          /* Maximum initial response length (no max) */
   imap_perform_authenticate,  /* Send authentication command */
   imap_continue_authenticate, /* Send authentication continuation */
@@ -299,15 +254,11 @@ static bool imap_endofresp(struct connectdata *conn, char *line, size_t len,
     len -= id_len + 1;
 
     if(len >= 2 && !memcmp(line, "OK", 2))
-      *resp = 'O';
-    else if(len >= 2 && !memcmp(line, "NO", 2))
-      *resp = 'N';
-    else if(len >= 3 && !memcmp(line, "BAD", 3))
-      *resp = 'B';
-    else {
-      failf(conn->data, "Bad tagged response");
-      *resp = -1;
-    }
+      *resp = IMAP_RESP_OK;
+    else if(len >= 7 && !memcmp(line, "PREAUTH", 7))
+      *resp = IMAP_RESP_PREAUTH;
+    else
+      *resp = IMAP_RESP_NOT_OK;
 
     return TRUE;
   }
@@ -613,9 +564,10 @@ static CURLcode imap_perform_authentication(struct connectdata *conn)
   struct imap_conn *imapc = &conn->proto.imapc;
   saslprogress progress;
 
-  /* Check we have enough data to authenticate with and end the
-     connect phase if we don't */
-  if(!Curl_sasl_can_authenticate(&imapc->sasl, conn)) {
+  /* Check if already authenticated OR if there is enough data to authenticate
+     with and end the connect phase if we don't */
+  if(imapc->preauth ||
+     !Curl_sasl_can_authenticate(&imapc->sasl, conn)) {
     state(conn, IMAP_STOP);
     return result;
   }
@@ -757,18 +709,48 @@ static CURLcode imap_perform_fetch(struct connectdata *conn)
 static CURLcode imap_perform_append(struct connectdata *conn)
 {
   CURLcode result = CURLE_OK;
-  struct IMAP *imap = conn->data->req.protop;
+  struct Curl_easy *data = conn->data;
+  struct IMAP *imap = data->req.protop;
   char *mailbox;
 
   /* Check we have a mailbox */
   if(!imap->mailbox) {
-    failf(conn->data, "Cannot APPEND without a mailbox.");
+    failf(data, "Cannot APPEND without a mailbox.");
     return CURLE_URL_MALFORMAT;
   }
 
+  /* Prepare the mime data if some. */
+  if(data->set.mimepost.kind != MIMEKIND_NONE) {
+    /* Use the whole structure as data. */
+    data->set.mimepost.flags &= ~MIME_BODY_ONLY;
+
+    /* Add external headers and mime version. */
+    curl_mime_headers(&data->set.mimepost, data->set.headers, 0);
+    result = Curl_mime_prepare_headers(&data->set.mimepost, NULL,
+                                       NULL, MIMESTRATEGY_MAIL);
+
+    if(!result)
+      if(!Curl_checkheaders(conn, "Mime-Version"))
+        result = Curl_mime_add_header(&data->set.mimepost.curlheaders,
+                                      "Mime-Version: 1.0");
+
+    /* Make sure we will read the entire mime structure. */
+    if(!result)
+      result = Curl_mime_rewind(&data->set.mimepost);
+
+    if(result)
+      return result;
+
+    data->state.infilesize = Curl_mime_size(&data->set.mimepost);
+
+    /* Read from mime structure. */
+    data->state.fread_func = (curl_read_callback) Curl_mime_read;
+    data->state.in = (void *) &data->set.mimepost;
+  }
+
   /* Check we know the size of the upload */
-  if(conn->data->state.infilesize < 0) {
-    failf(conn->data, "Cannot APPEND with unknown input file size\n");
+  if(data->state.infilesize < 0) {
+    failf(data, "Cannot APPEND with unknown input file size\n");
     return CURLE_UPLOAD_FAILED;
   }
 
@@ -779,7 +761,7 @@ static CURLcode imap_perform_append(struct connectdata *conn)
 
   /* Send the APPEND command */
   result = imap_sendf(conn, "APPEND %s (\\Seen) {%" CURL_FORMAT_CURL_OFF_T "}",
-                      mailbox, conn->data->state.infilesize);
+                      mailbox, data->state.infilesize);
 
   free(mailbox);
 
@@ -839,19 +821,21 @@ static CURLcode imap_state_servergreet_resp(struct connectdata *conn,
                                             int imapcode,
                                             imapstate instate)
 {
-  CURLcode result = CURLE_OK;
   struct Curl_easy *data = conn->data;
-
   (void)instate; /* no use for this yet */
 
-  if(imapcode != 'O') {
+  if(imapcode == IMAP_RESP_PREAUTH) {
+    /* PREAUTH */
+    struct imap_conn *imapc = &conn->proto.imapc;
+    imapc->preauth = TRUE;
+    infof(data, "PREAUTH connection, already authenticated!\n");
+  }
+  else if(imapcode != IMAP_RESP_OK) {
     failf(data, "Got unexpected imap-server response");
-    result = CURLE_WEIRD_SERVER_REPLY;
+    return CURLE_WEIRD_SERVER_REPLY;
   }
-  else
-    result = imap_perform_capability(conn);
 
-  return result;
+  return imap_perform_capability(conn);
 }
 
 /* For CAPABILITY responses */
@@ -918,7 +902,7 @@ static CURLcode imap_state_capability_resp(struct connectdata *conn,
       line += wordlen;
     }
   }
-  else if(imapcode == 'O') {
+  else if(imapcode == IMAP_RESP_OK) {
     if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
       /* We don't have a SSL/TLS connection yet, but SSL is requested */
       if(imapc->tls_supported)
@@ -951,7 +935,7 @@ static CURLcode imap_state_starttls_resp(struct connectdata *conn,
 
   (void)instate; /* no use for this yet */
 
-  if(imapcode != 'O') {
+  if(imapcode != IMAP_RESP_OK) {
     if(data->set.use_ssl != CURLUSESSL_TRY) {
       failf(data, "STARTTLS denied");
       result = CURLE_USE_SSL_FAILED;
@@ -1009,7 +993,7 @@ static CURLcode imap_state_login_resp(struct connectdata *conn,
 
   (void)instate; /* no use for this yet */
 
-  if(imapcode != 'O') {
+  if(imapcode != IMAP_RESP_OK) {
     failf(data, "Access denied. %c", imapcode);
     result = CURLE_LOGIN_DENIED;
   }
@@ -1037,7 +1021,7 @@ static CURLcode imap_state_listsearch_resp(struct connectdata *conn,
     result = Curl_client_write(conn, CLIENTWRITE_BODY, line, len + 1);
     line[len] = '\0';
   }
-  else if(imapcode != 'O')
+  else if(imapcode != IMAP_RESP_OK)
     result = CURLE_QUOTE_ERROR; /* TODO: Fix error code */
   else
     /* End of DO phase */
@@ -1066,7 +1050,7 @@ static CURLcode imap_state_select_resp(struct connectdata *conn, int imapcode,
       imapc->mailbox_uidvalidity = strdup(tmp);
     }
   }
-  else if(imapcode == 'O') {
+  else if(imapcode == IMAP_RESP_OK) {
     /* Check if the UIDVALIDITY has been specified and matches */
     if(imap->uidvalidity && imapc->mailbox_uidvalidity &&
        strcmp(imap->uidvalidity, imapc->mailbox_uidvalidity)) {
@@ -1120,10 +1104,11 @@ static CURLcode imap_state_fetch_resp(struct connectdata *conn, int imapcode,
 
   if(*ptr == '{') {
     char *endptr;
-    size = curlx_strtoofft(ptr + 1, &endptr, 10);
-    if(endptr - ptr > 1 && endptr[0] == '}' &&
-       endptr[1] == '\r' && endptr[2] == '\0')
-      parsed = TRUE;
+    if(!curlx_strtoofft(ptr + 1, &endptr, 10, &size)) {
+      if(endptr - ptr > 1 && endptr[0] == '}' &&
+         endptr[1] == '\r' && endptr[2] == '\0')
+        parsed = TRUE;
+    }
   }
 
   if(parsed) {
@@ -1197,7 +1182,7 @@ static CURLcode imap_state_fetch_final_resp(struct connectdata *conn,
 
   (void)instate; /* No use for this yet */
 
-  if(imapcode != 'O')
+  if(imapcode != IMAP_RESP_OK)
     result = CURLE_WEIRD_SERVER_REPLY;
   else
     /* End of DONE phase */
@@ -1241,7 +1226,7 @@ static CURLcode imap_state_append_final_resp(struct connectdata *conn,
 
   (void)instate; /* No use for this yet */
 
-  if(imapcode != 'O')
+  if(imapcode != IMAP_RESP_OK)
     result = CURLE_UPLOAD_FAILED;
   else
     /* End of DONE phase */
@@ -1469,9 +1454,10 @@ static CURLcode imap_done(struct connectdata *conn, CURLcode status,
     result = status;         /* use the already set error code */
   }
   else if(!data->set.connect_only && !imap->custom &&
-          (imap->uid || data->set.upload)) {
+          (imap->uid || data->set.upload ||
+          data->set.mimepost.kind != MIMEKIND_NONE)) {
     /* Handle responses after FETCH or APPEND transfer has finished */
-    if(!data->set.upload)
+    if(!data->set.upload && data->set.mimepost.kind == MIMEKIND_NONE)
       state(conn, IMAP_FETCH_FINAL);
     else {
       /* End the APPEND command first by sending an empty line */
@@ -1541,7 +1527,7 @@ static CURLcode imap_perform(struct connectdata *conn, bool *connected,
     selected = TRUE;
 
   /* Start the first command in the DO phase */
-  if(conn->data->set.upload)
+  if(conn->data->set.upload || data->set.mimepost.kind != MIMEKIND_NONE)
     /* APPEND can be executed directly */
     result = imap_perform_append(conn);
   else if(imap->custom && (selected || !imap->mailbox))
@@ -1715,31 +1701,6 @@ static CURLcode imap_setup_connection(struct connectdata *conn)
 
   /* Clear the TLS upgraded flag */
   conn->tls_upgraded = FALSE;
-
-  /* Set up the proxy if necessary */
-  if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
-    /* Unless we have asked to tunnel IMAP operations through the proxy, we
-       switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
-    if(conn->handler == &Curl_handler_imap)
-      conn->handler = &Curl_handler_imap_proxy;
-    else {
-#ifdef USE_SSL
-      conn->handler = &Curl_handler_imaps_proxy;
-#else
-      failf(data, "IMAPS not supported!");
-      return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-    }
-
-    /* set it up as an HTTP connection instead */
-    return conn->handler->setup_connection(conn);
-#else
-    failf(data, "IMAP over http proxy requires HTTP support built-in!");
-    return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-  }
-
   data->state.path++;   /* don't include the initial slash */
 
   return CURLE_OK;
@@ -1836,7 +1797,7 @@ static char *imap_atom(const char *str, bool escape_only)
     return strdup(str);
 
   /* Calculate the new string length */
-  newlen = strlen(str) + backsp_count + quote_count + (others_exists ? 2 : 0);
+  newlen = strlen(str) + backsp_count + quote_count + (escape_only ? 0 : 2);
 
   /* Allocate the new string */
   newstr = (char *) malloc((newlen + 1) * sizeof(char));
@@ -1845,7 +1806,7 @@ static char *imap_atom(const char *str, bool escape_only)
 
   /* Surround the string in quotes if necessary */
   p2 = newstr;
-  if(others_exists) {
+  if(!escape_only) {
     newstr[0] = '"';
     newstr[newlen - 1] = '"';
     p2++;
diff --git a/lib/imap.h b/lib/imap.h
index 5e0e228..9fc4ff5 100644
--- a/lib/imap.h
+++ b/lib/imap.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2009 - 2015, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2009 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -71,6 +71,7 @@ struct imap_conn {
   struct pingpong pp;
   imapstate state;            /* Always use imap.c:state() to change state! */
   bool ssldone;               /* Is connect() over SSL done? */
+  bool preauth;               /* Is this connection PREAUTH? */
   struct SASL sasl;           /* SASL-related parameters */
   unsigned int preftype;      /* Preferred authentication type */
   int cmdid;                  /* Last used command ID */
diff --git a/lib/inet_ntop.c b/lib/inet_ntop.c
index 9afbdbb..fb91a50 100644
--- a/lib/inet_ntop.c
+++ b/lib/inet_ntop.c
@@ -63,7 +63,7 @@ static char *inet_ntop4 (const unsigned char *src, char *dst, size_t size)
 
   len = strlen(tmp);
   if(len == 0 || len >= size) {
-    SET_ERRNO(ENOSPC);
+    errno = ENOSPC;
     return (NULL);
   }
   strcpy(dst, tmp);
@@ -141,8 +141,8 @@ static char *inet_ntop6 (const unsigned char *src, char *dst, size_t size)
      */
     if(i == 6 && best.base == 0 &&
         (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
-      if(!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) {
-        SET_ERRNO(ENOSPC);
+      if(!inet_ntop4(src + 12, tp, sizeof(tmp) - (tp - tmp))) {
+        errno = ENOSPC;
         return (NULL);
       }
       tp += strlen(tp);
@@ -160,7 +160,7 @@ static char *inet_ntop6 (const unsigned char *src, char *dst, size_t size)
   /* Check for overflow, copy, and we're done.
    */
   if((size_t)(tp - tmp) > size) {
-    SET_ERRNO(ENOSPC);
+    errno = ENOSPC;
     return (NULL);
   }
   strcpy(dst, tmp);
@@ -177,8 +177,8 @@ static char *inet_ntop6 (const unsigned char *src, char *dst, size_t size)
  *
  * On Windows we store the error in the thread errno, not
  * in the winsock error code. This is to avoid losing the
- * actual last winsock error. So use macro ERRNO to fetch the
- * errno this function sets when returning NULL, not SOCKERRNO.
+ * actual last winsock error. So when this function returns
+ * NULL, check errno not SOCKERRNO.
  */
 char *Curl_inet_ntop(int af, const void *src, char *buf, size_t size)
 {
@@ -190,7 +190,7 @@ char *Curl_inet_ntop(int af, const void *src, char *buf, size_t size)
     return inet_ntop6((const unsigned char *)src, buf, size);
 #endif
   default:
-    SET_ERRNO(EAFNOSUPPORT);
+    errno = EAFNOSUPPORT;
     return NULL;
   }
 }
diff --git a/lib/inet_pton.c b/lib/inet_pton.c
index 475f44a..fef9610 100644
--- a/lib/inet_pton.c
+++ b/lib/inet_pton.c
@@ -57,8 +57,8 @@ static int      inet_pton6(const char *src, unsigned char *dst);
  * notice:
  *      On Windows we store the error in the thread errno, not
  *      in the winsock error code. This is to avoid losing the
- *      actual last winsock error. So use macro ERRNO to fetch the
- *      errno this function sets when returning (-1), not SOCKERRNO.
+ *      actual last winsock error. So when this function returns
+ *      -1, check errno not SOCKERRNO.
  * author:
  *      Paul Vixie, 1996.
  */
@@ -73,7 +73,7 @@ Curl_inet_pton(int af, const char *src, void *dst)
     return (inet_pton6(src, (unsigned char *)dst));
 #endif
   default:
-    SET_ERRNO(EAFNOSUPPORT);
+    errno = EAFNOSUPPORT;
     return (-1);
   }
   /* NOTREACHED */
diff --git a/lib/inet_pton.h b/lib/inet_pton.h
index 9188d95..e216f4e 100644
--- a/lib/inet_pton.h
+++ b/lib/inet_pton.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -29,6 +29,9 @@ int Curl_inet_pton(int, const char *, void *);
 #ifdef HAVE_INET_PTON
 #ifdef HAVE_ARPA_INET_H
 #include <arpa/inet.h>
+#elif defined(HAVE_WS2TCPIP_H)
+/* inet_pton() exists in Vista or later */
+#include <ws2tcpip.h>
 #endif
 #define Curl_inet_pton(x,y,z) inet_pton(x,y,z)
 #endif
diff --git a/lib/krb5.c b/lib/krb5.c
index 69a3597..af25e92 100644
--- a/lib/krb5.c
+++ b/lib/krb5.c
@@ -1,6 +1,6 @@
 /* GSSAPI/krb5 support for FTP - loosely based on old krb4.c
  *
- * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
+ * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  * Copyright (c) 2004 - 2016 Daniel Stenberg
  * All rights reserved.
diff --git a/lib/ldap.c b/lib/ldap.c
index 79e84d9..040641c 100644
--- a/lib/ldap.c
+++ b/lib/ldap.c
@@ -5,7 +5,7 @@
  *                | (__| |_| |  _ <| |___
  *                 \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -150,6 +150,7 @@ const struct Curl_handler Curl_handler_ldap = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_LDAP,                            /* defport */
   CURLPROTO_LDAP,                       /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -175,6 +176,7 @@ const struct Curl_handler Curl_handler_ldaps = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_LDAPS,                           /* defport */
   CURLPROTO_LDAPS,                      /* protocol */
   PROTOPT_SSL                           /* flags */
@@ -233,7 +235,6 @@ static int ldap_win_bind(struct connectdata *conn, LDAP *server,
                          const char *user, const char *passwd)
 {
   int rc = LDAP_INVALID_CREDENTIALS;
-  ULONG method = LDAP_AUTH_SIMPLE;
 
   PTCHAR inuser = NULL;
   PTCHAR inpass = NULL;
@@ -242,7 +243,7 @@ static int ldap_win_bind(struct connectdata *conn, LDAP *server,
     inuser = Curl_convert_UTF8_to_tchar((char *) user);
     inpass = Curl_convert_UTF8_to_tchar((char *) passwd);
 
-    rc = ldap_bind_s(server, inuser, inpass, method);
+    rc = ldap_simple_bind_s(server, inuser, inpass);
 
     Curl_unicodefree(inuser);
     Curl_unicodefree(inpass);
@@ -266,7 +267,7 @@ static CURLcode Curl_ldap(struct connectdata *conn, bool *done)
   LDAPMessage *ldapmsg = NULL;
   LDAPMessage *entryIterator;
   int num = 0;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   int ldap_proto = LDAP_VERSION3;
   int ldap_ssl = 0;
   char *val_b64 = NULL;
diff --git a/lib/memdebug.c b/lib/memdebug.c
index 2b8808a..0eb249c 100644
--- a/lib/memdebug.c
+++ b/lib/memdebug.c
@@ -115,7 +115,8 @@ void curl_memdebug(const char *logname)
       logfile = stderr;
 #ifdef MEMDEBUG_LOG_SYNC
     /* Flush the log file after every line so the log isn't lost in a crash */
-    setbuf(logfile, (char *)NULL);
+    if(logfile)
+      setbuf(logfile, (char *)NULL);
 #endif
   }
 }
@@ -146,7 +147,7 @@ static bool countcheck(const char *func, int line, const char *source)
                 source, line, func);
         fflush(logfile); /* because it might crash now */
       }
-      SET_ERRNO(ENOMEM);
+      errno = ENOMEM;
       return TRUE; /* RETURN ERROR! */
     }
     else
@@ -169,7 +170,7 @@ void *curl_domalloc(size_t wantedsize, int line, const char *source)
     return NULL;
 
   /* alloc at least 64 bytes */
-  size = sizeof(struct memdebug)+wantedsize;
+  size = sizeof(struct memdebug) + wantedsize;
 
   mem = (Curl_cmalloc)(size);
   if(mem) {
@@ -224,9 +225,9 @@ char *curl_dostrdup(const char *str, int line, const char *source)
   if(countcheck("strdup", line, source))
     return NULL;
 
-  len=strlen(str)+1;
+  len = strlen(str) + 1;
 
-  mem=curl_domalloc(len, 0, NULL); /* NULL prevents logging */
+  mem = curl_domalloc(len, 0, NULL); /* NULL prevents logging */
   if(mem)
     memcpy(mem, str, len);
 
@@ -268,9 +269,9 @@ wchar_t *curl_dowcsdup(const wchar_t *str, int line, const char *source)
 void *curl_dorealloc(void *ptr, size_t wantedsize,
                      int line, const char *source)
 {
-  struct memdebug *mem=NULL;
+  struct memdebug *mem = NULL;
 
-  size_t size = sizeof(struct memdebug)+wantedsize;
+  size_t size = sizeof(struct memdebug) + wantedsize;
 
   DEBUGASSERT(wantedsize != 0);
 
@@ -406,7 +407,7 @@ void curl_mark_sclose(curl_socket_t sockfd, int line, const char *source)
 /* this is our own defined way to close sockets on *ALL* platforms */
 int curl_sclose(curl_socket_t sockfd, int line, const char *source)
 {
-  int res=sclose(sockfd);
+  int res = sclose(sockfd);
   curl_mark_sclose(sockfd, line, source);
   return res;
 }
@@ -414,7 +415,7 @@ int curl_sclose(curl_socket_t sockfd, int line, const char *source)
 FILE *curl_fopen(const char *file, const char *mode,
                  int line, const char *source)
 {
-  FILE *res=fopen(file, mode);
+  FILE *res = fopen(file, mode);
 
   if(source)
     curl_memlog("FILE %s:%d fopen(\"%s\",\"%s\") = %p\n",
@@ -427,7 +428,7 @@ FILE *curl_fopen(const char *file, const char *mode,
 FILE *curl_fdopen(int filedes, const char *mode,
                   int line, const char *source)
 {
-  FILE *res=fdopen(filedes, mode);
+  FILE *res = fdopen(filedes, mode);
 
   if(source)
     curl_memlog("FILE %s:%d fdopen(\"%d\",\"%s\") = %p\n",
@@ -443,7 +444,7 @@ int curl_fclose(FILE *file, int line, const char *source)
 
   DEBUGASSERT(file != NULL);
 
-  res=fclose(file);
+  res = fclose(file);
 
   if(source)
     curl_memlog("FILE %s:%d fclose(%p)\n",
diff --git a/lib/mime.c b/lib/mime.c
new file mode 100644
index 0000000..496f5e6
--- /dev/null
+++ b/lib/mime.c
@@ -0,0 +1,1860 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+
+#include "mime.h"
+#include "non-ascii.h"
+
+#if !defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_SMTP) || \
+    !defined(CURL_DISABLE_IMAP)
+
+#if defined(HAVE_LIBGEN_H) && defined(HAVE_BASENAME)
+#include <libgen.h>
+#endif
+
+#include "rand.h"
+#include "slist.h"
+#include "strcase.h"
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
+#include "memdebug.h"
+
+#ifdef WIN32
+# ifndef R_OK
+#  define R_OK 4
+# endif
+#endif
+
+
+#define FILE_CONTENTTYPE_DEFAULT        "application/octet-stream"
+#define MULTIPART_CONTENTTYPE_DEFAULT   "multipart/mixed"
+#define DISPOSITION_DEFAULT             "attachment"
+
+#define READ_ERROR                      ((size_t) -1)
+
+/* Encoders. */
+static size_t encoder_nop_read(char *buffer, size_t size, bool ateof,
+                                curl_mimepart *part);
+static curl_off_t encoder_nop_size(curl_mimepart *part);
+static size_t encoder_7bit_read(char *buffer, size_t size, bool ateof,
+                                curl_mimepart *part);
+static size_t encoder_base64_read(char *buffer, size_t size, bool ateof,
+                                curl_mimepart *part);
+static curl_off_t encoder_base64_size(curl_mimepart *part);
+static size_t encoder_qp_read(char *buffer, size_t size, bool ateof,
+                              curl_mimepart *part);
+static curl_off_t encoder_qp_size(curl_mimepart *part);
+
+static const mime_encoder encoders[] = {
+  {"binary", encoder_nop_read, encoder_nop_size},
+  {"8bit", encoder_nop_read, encoder_nop_size},
+  {"7bit", encoder_7bit_read, encoder_nop_size},
+  {"base64", encoder_base64_read, encoder_base64_size},
+  {"quoted-printable", encoder_qp_read, encoder_qp_size},
+  {ZERO_NULL, ZERO_NULL, ZERO_NULL}
+};
+
+/* Base64 encoding table */
+static const char base64[] =
+  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+/* Quoted-printable character class table.
+ *
+ * We cannot rely on ctype functions since quoted-printable input data
+ * is assumed to be ascii-compatible, even on non-ascii platforms. */
+#define QP_OK           1       /* Can be represented by itself. */
+#define QP_SP           2       /* Space or tab. */
+#define QP_CR           3       /* Carriage return. */
+#define QP_LF           4       /* Line-feed. */
+static const unsigned char qp_class[] = {
+ 0,     0,     0,     0,     0,     0,     0,     0,            /* 00 - 07 */
+ 0,     QP_SP, QP_LF, 0,     0,     QP_CR, 0,     0,            /* 08 - 0F */
+ 0,     0,     0,     0,     0,     0,     0,     0,            /* 10 - 17 */
+ 0,     0,     0,     0,     0,     0,     0,     0,            /* 18 - 1F */
+ QP_SP, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 20 - 27 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 28 - 2F */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 30 - 37 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, 0    , QP_OK, QP_OK,        /* 38 - 3F */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 40 - 47 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 48 - 4F */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 50 - 57 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 58 - 5F */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 60 - 67 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 68 - 6F */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK,        /* 70 - 77 */
+ QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, QP_OK, 0,            /* 78 - 7F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* 80 - 8F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* 90 - 9F */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* A0 - AF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* B0 - BF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* C0 - CF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* D0 - DF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                /* E0 - EF */
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0                 /* F0 - FF */
+};
+
+
+/* Binary --> hexadecimal ASCII table. */
+static const char aschex[] =
+  "\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x41\x42\x43\x44\x45\x46";
+
+
+
+#ifndef __VMS
+#define filesize(name, stat_data) (stat_data.st_size)
+#define fopen_read fopen
+
+#else
+
+#include <fabdef.h>
+/*
+ * get_vms_file_size does what it takes to get the real size of the file
+ *
+ * For fixed files, find out the size of the EOF block and adjust.
+ *
+ * For all others, have to read the entire file in, discarding the contents.
+ * Most posted text files will be small, and binary files like zlib archives
+ * and CD/DVD images should be either a STREAM_LF format or a fixed format.
+ *
+ */
+curl_off_t VmsRealFileSize(const char *name,
+                           const struct_stat *stat_buf)
+{
+  char buffer[8192];
+  curl_off_t count;
+  int ret_stat;
+  FILE * file;
+
+  file = fopen(name, FOPEN_READTEXT); /* VMS */
+  if(file == NULL)
+    return 0;
+
+  count = 0;
+  ret_stat = 1;
+  while(ret_stat > 0) {
+    ret_stat = fread(buffer, 1, sizeof(buffer), file);
+    if(ret_stat != 0)
+      count += ret_stat;
+  }
+  fclose(file);
+
+  return count;
+}
+
+/*
+ *
+ *  VmsSpecialSize checks to see if the stat st_size can be trusted and
+ *  if not to call a routine to get the correct size.
+ *
+ */
+static curl_off_t VmsSpecialSize(const char *name,
+                                 const struct_stat *stat_buf)
+{
+  switch(stat_buf->st_fab_rfm) {
+  case FAB$C_VAR:
+  case FAB$C_VFC:
+    return VmsRealFileSize(name, stat_buf);
+    break;
+  default:
+    return stat_buf->st_size;
+  }
+}
+
+#define filesize(name, stat_data) VmsSpecialSize(name, &stat_data)
+
+/*
+ * vmsfopenread
+ *
+ * For upload to work as expected on VMS, different optional
+ * parameters must be added to the fopen command based on
+ * record format of the file.
+ *
+ */
+static FILE * vmsfopenread(const char *file, const char *mode)
+{
+  struct_stat statbuf;
+  int result;
+
+  result = stat(file, &statbuf);
+
+  switch(statbuf.st_fab_rfm) {
+  case FAB$C_VAR:
+  case FAB$C_VFC:
+  case FAB$C_STMCR:
+    return fopen(file, FOPEN_READTEXT); /* VMS */
+    break;
+  default:
+    return fopen(file, FOPEN_READTEXT, "rfm=stmlf", "ctx=stm");
+  }
+}
+
+#define fopen_read vmsfopenread
+#endif
+
+
+#ifndef HAVE_BASENAME
+/*
+  (Quote from The Open Group Base Specifications Issue 6 IEEE Std 1003.1, 2004
+  Edition)
+
+  The basename() function shall take the pathname pointed to by path and
+  return a pointer to the final component of the pathname, deleting any
+  trailing '/' characters.
+
+  If the string pointed to by path consists entirely of the '/' character,
+  basename() shall return a pointer to the string "/". If the string pointed
+  to by path is exactly "//", it is implementation-defined whether '/' or "//"
+  is returned.
+
+  If path is a null pointer or points to an empty string, basename() shall
+  return a pointer to the string ".".
+
+  The basename() function may modify the string pointed to by path, and may
+  return a pointer to static storage that may then be overwritten by a
+  subsequent call to basename().
+
+  The basename() function need not be reentrant. A function that is not
+  required to be reentrant is not required to be thread-safe.
+
+*/
+static char *Curl_basename(char *path)
+{
+  /* Ignore all the details above for now and make a quick and simple
+     implementaion here */
+  char *s1;
+  char *s2;
+
+  s1 = strrchr(path, '/');
+  s2 = strrchr(path, '\\');
+
+  if(s1 && s2) {
+    path = (s1 > s2? s1 : s2) + 1;
+  }
+  else if(s1)
+    path = s1 + 1;
+  else if(s2)
+    path = s2 + 1;
+
+  return path;
+}
+
+#define basename(x)  Curl_basename((x))
+#endif
+
+
+/* Set readback state. */
+static void mimesetstate(mime_state *state, enum mimestate tok, void *ptr)
+{
+  state->state = tok;
+  state->ptr = ptr;
+  state->offset = 0;
+}
+
+
+/* Escape header string into allocated memory. */
+static char *escape_string(const char *src)
+{
+  size_t bytecount = 0;
+  size_t i;
+  char *dst;
+
+  for(i = 0; src[i]; i++)
+    if(src[i] == '"' || src[i] == '\\')
+      bytecount++;
+
+  bytecount += i;
+  dst = malloc(bytecount + 1);
+  if(!dst)
+    return NULL;
+
+  for(i = 0; *src; src++) {
+    if(*src == '"' || *src == '\\')
+      dst[i++] = '\\';
+    dst[i++] = *src;
+  }
+
+  dst[i] = '\0';
+  return dst;
+}
+
+/* Check if header matches. */
+static char *match_header(struct curl_slist *hdr, const char *lbl, size_t len)
+{
+  char *value = NULL;
+
+  if(strncasecompare(hdr->data, lbl, len) && hdr->data[len] == ':')
+    for(value = hdr->data + len + 1; *value == ' '; value++)
+      ;
+  return value;
+}
+
+/* Get a header from an slist. */
+static char *search_header(struct curl_slist *hdrlist, const char *hdr)
+{
+  size_t len = strlen(hdr);
+  char *value = NULL;
+
+  for(; !value && hdrlist; hdrlist = hdrlist->next)
+    value = match_header(hdrlist, hdr, len);
+
+  return value;
+}
+
+static char *strippath(const char *fullfile)
+{
+  char *filename;
+  char *base;
+  filename = strdup(fullfile); /* duplicate since basename() may ruin the
+                                  buffer it works on */
+  if(!filename)
+    return NULL;
+  base = strdup(basename(filename));
+
+  free(filename); /* free temporary buffer */
+
+  return base; /* returns an allocated string or NULL ! */
+}
+
+/* Initialize data encoder state. */
+static void cleanup_encoder_state(mime_encoder_state *p)
+{
+  p->pos = 0;
+  p->bufbeg = 0;
+  p->bufend = 0;
+}
+
+
+/* Dummy encoder. This is used for 8bit and binary content encodings. */
+static size_t encoder_nop_read(char *buffer, size_t size, bool ateof,
+                               curl_mimepart *part)
+{
+  mime_encoder_state *st = &part->encstate;
+  size_t insize = st->bufend - st->bufbeg;
+
+  (void) ateof;
+
+  if(size > insize)
+    size = insize;
+  if(size)
+    memcpy(buffer, st->buf, size);
+  st->bufbeg += size;
+  return size;
+}
+
+static curl_off_t encoder_nop_size(curl_mimepart *part)
+{
+  return part->datasize;
+}
+
+
+/* 7bit encoder: the encoder is just a data validity check. */
+static size_t encoder_7bit_read(char *buffer, size_t size, bool ateof,
+                                curl_mimepart *part)
+{
+  mime_encoder_state *st = &part->encstate;
+  size_t cursize = st->bufend - st->bufbeg;
+
+  (void) ateof;
+
+  if(size > cursize)
+    size = cursize;
+
+  for(cursize = 0; cursize < size; cursize++) {
+    *buffer = st->buf[st->bufbeg];
+    if(*buffer++ & 0x80)
+      return cursize? cursize: READ_ERROR;
+    st->bufbeg++;
+  }
+
+  return cursize;
+}
+
+
+/* Base64 content encoder. */
+static size_t encoder_base64_read(char *buffer, size_t size, bool ateof,
+                                curl_mimepart *part)
+{
+  mime_encoder_state *st = &part->encstate;
+  size_t cursize = 0;
+  int i;
+  char *ptr = buffer;
+
+  while(st->bufbeg < st->bufend) {
+    /* Line full ? */
+    if(st->pos >= MAX_ENCODED_LINE_LENGTH - 4) {
+      /* Yes, we need 2 characters for CRLF. */
+      if(size < 2)
+        break;
+      *ptr++ = '\r';
+      *ptr++ = '\n';
+      st->pos = 0;
+      cursize += 2;
+      size -= 2;
+    }
+
+    /* Be sure there is enough space and input data for a base64 group. */
+    if(size < 4 || st->bufend - st->bufbeg < 3)
+      break;
+
+    /* Encode three bytes a four characters. */
+    i = st->buf[st->bufbeg++] & 0xFF;
+    i = (i << 8) | (st->buf[st->bufbeg++] & 0xFF);
+    i = (i << 8) | (st->buf[st->bufbeg++] & 0xFF);
+    *ptr++ = base64[(i >> 18) & 0x3F];
+    *ptr++ = base64[(i >> 12) & 0x3F];
+    *ptr++ = base64[(i >> 6) & 0x3F];
+    *ptr++ = base64[i & 0x3F];
+    cursize += 4;
+    st->pos += 4;
+    size -= 4;
+  }
+
+  /* If at eof, we have to flush the buffered data. */
+  if(ateof && size >= 4) {
+    /* Buffered data size can only be 0, 1 or 2. */
+    ptr[2] = ptr[3] = '=';
+    i = 0;
+    switch(st->bufend - st->bufbeg) {
+    case 2:
+      i = (st->buf[st->bufbeg + 1] & 0xFF) << 8;
+      /* FALLTHROUGH */
+    case 1:
+      i |= (st->buf[st->bufbeg] & 0xFF) << 16;
+      ptr[0] = base64[(i >> 18) & 0x3F];
+      ptr[1] = base64[(i >> 12) & 0x3F];
+      if(++st->bufbeg != st->bufend) {
+        ptr[2] = base64[(i >> 6) & 0x3F];
+        st->bufbeg++;
+      }
+      cursize += 4;
+      st->pos += 4;
+      break;
+    }
+  }
+
+#ifdef CURL_DOES_CONVERSIONS
+  /* This is now textual data, Convert character codes. */
+  if(part->easy && cursize) {
+    CURLcode result = Curl_convert_to_network(part->easy, buffer, cursize);
+    if(result)
+      return READ_ERROR;
+  }
+#endif
+
+  return cursize;
+}
+
+static curl_off_t encoder_base64_size(curl_mimepart *part)
+{
+  curl_off_t size = part->datasize;
+
+  if(size <= 0)
+    return size;    /* Unknown size or no data. */
+
+  /* Compute base64 character count. */
+  size = 4 * (1 + (size - 1) / 3);
+
+  /* Effective character count must include CRLFs. */
+  return size + 2 * ((size - 1) / MAX_ENCODED_LINE_LENGTH);
+}
+
+
+/* Quoted-printable lookahead.
+ *
+ * Check if a CRLF or end of data is in input buffer at current position + n.
+ * Return -1 if more data needed, 1 if CRLF or end of data, else 0.
+ */
+static int qp_lookahead_eol(mime_encoder_state *st, int ateof, size_t n)
+{
+  n += st->bufbeg;
+  if(n >= st->bufend && ateof)
+    return 1;
+  if(n + 2 > st->bufend)
+    return ateof? 0: -1;
+  if(qp_class[st->buf[n] & 0xFF] == QP_CR &&
+     qp_class[st->buf[n + 1] & 0xFF] == QP_LF)
+    return 1;
+  return 0;
+}
+
+/* Quoted-printable encoder. */
+static size_t encoder_qp_read(char *buffer, size_t size, bool ateof,
+                              curl_mimepart *part)
+{
+  mime_encoder_state *st = &part->encstate;
+  char *ptr = buffer;
+  size_t cursize = 0;
+  int i;
+  size_t len;
+  size_t consumed;
+  int softlinebreak;
+  char buf[4];
+
+  /* On all platforms, input is supposed to be ASCII compatible: for this
+     reason, we use hexadecimal ASCII codes in this function rather than
+     character constants that can be interpreted as non-ascii on some
+     platforms. Preserve ASCII encoding on output too. */
+  while(st->bufbeg < st->bufend) {
+    len = 1;
+    consumed = 1;
+    i = st->buf[st->bufbeg];
+    buf[0] = (char) i;
+    buf[1] = aschex[(i >> 4) & 0xF];
+    buf[2] = aschex[i & 0xF];
+
+    switch(qp_class[st->buf[st->bufbeg] & 0xFF]) {
+    case QP_OK:          /* Not a special character. */
+      break;
+    case QP_SP:          /* Space or tab. */
+      /* Spacing must be escaped if followed by CRLF. */
+      switch(qp_lookahead_eol(st, ateof, 1)) {
+      case -1:          /* More input data needed. */
+        return cursize;
+      case 0:           /* No encoding needed. */
+        break;
+      default:          /* CRLF after space or tab. */
+        buf[0] = '\x3D';    /* '=' */
+        len = 3;
+        break;
+      }
+      break;
+    case QP_CR:         /* Carriage return. */
+      /* If followed by a line-feed, output the CRLF pair.
+         Else escape it. */
+      switch(qp_lookahead_eol(st, ateof, 0)) {
+      case -1:          /* Need more data. */
+        return cursize;
+      case 1:           /* CRLF found. */
+        buf[len++] = '\x0A';    /* Append '\n'. */
+        consumed = 2;
+        break;
+      default:          /* Not followed by LF: escape. */
+        buf[0] = '\x3D';    /* '=' */
+        len = 3;
+        break;
+      }
+      break;
+    default:            /* Character must be escaped. */
+      buf[0] = '\x3D';    /* '=' */
+      len = 3;
+      break;
+    }
+
+    /* Be sure the encoded character fits within maximum line length. */
+    if(buf[len - 1] != '\x0A') {    /* '\n' */
+      softlinebreak = st->pos + len > MAX_ENCODED_LINE_LENGTH;
+      if(!softlinebreak && st->pos + len == MAX_ENCODED_LINE_LENGTH) {
+        /* We may use the current line only if end of data or followed by
+           a CRLF. */
+        switch(qp_lookahead_eol(st, ateof, consumed)) {
+        case -1:        /* Need more data. */
+          return cursize;
+          break;
+        case 0:         /* Not followed by a CRLF. */
+          softlinebreak = 1;
+          break;
+        }
+      }
+      if(softlinebreak) {
+        strcpy(buf, "\x3D\x0D\x0A");    /* "=\r\n" */
+        len = 3;
+        consumed = 0;
+      }
+    }
+
+    /* If the output buffer would overflow, do not store. */
+    if(len > size)
+      break;
+
+    /* Append to output buffer. */
+    memcpy(ptr, buf, len);
+    cursize += len;
+    ptr += len;
+    size -= len;
+    st->pos += len;
+    if(buf[len - 1] == '\x0A')    /* '\n' */
+      st->pos = 0;
+    st->bufbeg += consumed;
+  }
+
+  return cursize;
+}
+
+static curl_off_t encoder_qp_size(curl_mimepart *part)
+{
+  /* Determining the size can only be done by reading the data: unless the
+     data size is 0, we return it as unknown (-1). */
+  return part->datasize? -1: 0;
+}
+
+
+/* In-memory data callbacks. */
+/* Argument is a pointer to the mime part. */
+static size_t mime_mem_read(char *buffer, size_t size, size_t nitems,
+                            void *instream)
+{
+  curl_mimepart *part = (curl_mimepart *) instream;
+  size_t sz = (size_t) part->datasize - part->state.offset;
+
+  (void) size;   /* Always 1.*/
+
+  if(sz > nitems)
+    sz = nitems;
+
+  if(sz)
+    memcpy(buffer, (char *) part->data, sz);
+
+  part->state.offset += sz;
+  return sz;
+}
+
+static int mime_mem_seek(void *instream, curl_off_t offset, int whence)
+{
+  curl_mimepart *part = (curl_mimepart *) instream;
+
+  switch(whence) {
+  case SEEK_CUR:
+    offset += part->state.offset;
+    break;
+  case SEEK_END:
+    offset += part->datasize;
+    break;
+  }
+
+  if(offset < 0 || offset > part->datasize)
+    return CURL_SEEKFUNC_FAIL;
+
+  part->state.offset = (size_t) offset;
+  return CURL_SEEKFUNC_OK;
+}
+
+static void mime_mem_free(void *ptr)
+{
+  Curl_safefree(((curl_mimepart *) ptr)->data);
+}
+
+
+/* Named file callbacks. */
+/* Argument is a pointer to the mime part. */
+static int mime_open_file(curl_mimepart * part)
+{
+  /* Open a MIMEKIND_FILE part. */
+
+  if(part->fp)
+    return 0;
+  part->fp = fopen_read(part->data, "rb");
+  return part->fp? 0: -1;
+}
+
+static size_t mime_file_read(char *buffer, size_t size, size_t nitems,
+                             void *instream)
+{
+  curl_mimepart *part = (curl_mimepart *) instream;
+
+  if(mime_open_file(part))
+    return READ_ERROR;
+
+  return fread(buffer, size, nitems, part->fp);
+}
+
+static int mime_file_seek(void *instream, curl_off_t offset, int whence)
+{
+  curl_mimepart *part = (curl_mimepart *) instream;
+
+  if(whence == SEEK_SET && !offset && !part->fp)
+    return CURL_SEEKFUNC_OK;   /* Not open: implicitly already at BOF. */
+
+  if(mime_open_file(part))
+    return CURL_SEEKFUNC_FAIL;
+
+  return fseek(part->fp, (long) offset, whence)?
+               CURL_SEEKFUNC_CANTSEEK: CURL_SEEKFUNC_OK;
+}
+
+static void mime_file_free(void *ptr)
+{
+  curl_mimepart *part = (curl_mimepart *) ptr;
+
+  if(part->fp) {
+    fclose(part->fp);
+    part->fp = NULL;
+  }
+  Curl_safefree(part->data);
+  part->data = NULL;
+}
+
+
+/* Subparts callbacks. */
+/* Argument is a pointer to the mime structure. */
+
+/* Readback a byte string segment. */
+static size_t readback_bytes(mime_state *state,
+                             char *buffer, size_t bufsize,
+                             const char *bytes, size_t numbytes,
+                             const char *trail)
+{
+  size_t sz;
+
+  sz = numbytes - state->offset;
+
+  if(numbytes > state->offset) {
+    sz = numbytes - state->offset;
+    bytes += state->offset;
+  }
+  else {
+    size_t tsz = strlen(trail);
+
+    sz = state->offset - numbytes;
+    if(sz >= tsz)
+      return 0;
+    bytes = trail + sz;
+    sz = tsz - sz;
+  }
+
+  if(sz > bufsize)
+    sz = bufsize;
+
+  memcpy(buffer, bytes, sz);
+  state->offset += sz;
+  return sz;
+}
+
+/* Read a non-encoded part content. */
+static size_t read_part_content(curl_mimepart *part,
+                                char *buffer, size_t bufsize)
+{
+  size_t sz = 0;
+
+  if(part->readfunc)
+    sz = part->readfunc(buffer, 1, bufsize, part->arg);
+  return sz;
+}
+
+/* Read and encode part content. */
+static size_t read_encoded_part_content(curl_mimepart *part,
+                                        char *buffer, size_t bufsize)
+{
+  mime_encoder_state *st = &part->encstate;
+  size_t cursize = 0;
+  size_t sz;
+  bool ateof = FALSE;
+
+  while(bufsize) {
+    if(st->bufbeg < st->bufend || ateof) {
+      /* Encode buffered data. */
+      sz = part->encoder->encodefunc(buffer, bufsize, ateof, part);
+      switch(sz) {
+      case 0:
+        if(ateof)
+          return cursize;
+        break;
+      case CURL_READFUNC_ABORT:
+      case CURL_READFUNC_PAUSE:
+      case READ_ERROR:
+        return cursize? cursize: sz;
+      default:
+        cursize += sz;
+        buffer += sz;
+        bufsize -= sz;
+        continue;
+      }
+    }
+
+    /* We need more data in input buffer. */
+    if(st->bufbeg) {
+      size_t len = st->bufend - st->bufbeg;
+
+      if(len)
+        memmove(st->buf, st->buf + st->bufbeg, len);
+      st->bufbeg = 0;
+      st->bufend = len;
+    }
+    if(st->bufend >= sizeof st->buf)
+      return cursize? cursize: READ_ERROR;    /* Buffer full. */
+    sz = read_part_content(part, st->buf + st->bufend,
+                           sizeof st->buf - st->bufend);
+    switch(sz) {
+    case 0:
+      ateof = TRUE;
+      break;
+    case CURL_READFUNC_ABORT:
+    case CURL_READFUNC_PAUSE:
+    case READ_ERROR:
+      return cursize? cursize: sz;
+    default:
+      st->bufend += sz;
+      break;
+    }
+  }
+
+  return cursize;
+}
+
+/* Readback a mime part. */
+static size_t readback_part(curl_mimepart *part,
+                            char *buffer, size_t bufsize)
+{
+  size_t cursize = 0;
+  size_t sz;
+  struct curl_slist *hdr;
+#ifdef CURL_DOES_CONVERSIONS
+  char *convbuf = buffer;
+#endif
+
+  /* Readback from part. */
+
+  while(bufsize) {
+    sz = 0;
+    hdr = (struct curl_slist *) part->state.ptr;
+    switch(part->state.state) {
+    case MIMESTATE_BEGIN:
+      mimesetstate(&part->state, part->flags & MIME_BODY_ONLY? MIMESTATE_BODY:
+                                 MIMESTATE_CURLHEADERS, part->curlheaders);
+      break;
+    case MIMESTATE_USERHEADERS:
+      if(!hdr) {
+        mimesetstate(&part->state, MIMESTATE_EOH, NULL);
+        break;
+      }
+      if(match_header(hdr, "Content-Type", 12)) {
+        mimesetstate(&part->state, MIMESTATE_USERHEADERS, hdr->next);
+        break;
+      }
+      /* FALLTHROUGH */
+    case MIMESTATE_CURLHEADERS:
+      if(!hdr)
+        mimesetstate(&part->state, MIMESTATE_USERHEADERS, part->userheaders);
+      else {
+        sz = readback_bytes(&part->state, buffer, bufsize,
+                            hdr->data, strlen(hdr->data), "\r\n");
+        if(!sz)
+          mimesetstate(&part->state, part->state.state, hdr->next);
+      }
+      break;
+    case MIMESTATE_EOH:
+      sz = readback_bytes(&part->state, buffer, bufsize, "\r\n", 2, "");
+      if(!sz)
+        mimesetstate(&part->state, MIMESTATE_BODY, NULL);
+      break;
+    case MIMESTATE_BODY:
+#ifdef CURL_DOES_CONVERSIONS
+      if(part->easy && convbuf < buffer) {
+        CURLcode result = Curl_convert_to_network(part->easy, convbuf,
+                                                  buffer - convbuf);
+        if(result)
+          return READ_ERROR;
+        convbuf = buffer;
+      }
+#endif
+      cleanup_encoder_state(&part->encstate);
+      mimesetstate(&part->state, MIMESTATE_CONTENT, NULL);
+      break;
+    case MIMESTATE_CONTENT:
+      if(part->encoder)
+        sz = read_encoded_part_content(part, buffer, bufsize);
+      else
+        sz = read_part_content(part, buffer, bufsize);
+      switch(sz) {
+      case 0:
+        mimesetstate(&part->state, MIMESTATE_END, NULL);
+        /* Try sparing open file descriptors. */
+        if(part->kind == MIMEKIND_FILE && part->fp) {
+          fclose(part->fp);
+          part->fp = NULL;
+        }
+        /* FALLTHROUGH */
+      case CURL_READFUNC_ABORT:
+      case CURL_READFUNC_PAUSE:
+      case READ_ERROR:
+        return cursize? cursize: sz;
+      }
+      break;
+    case MIMESTATE_END:
+      return cursize;
+    default:
+      break;    /* Other values not in part state. */
+    }
+
+    /* Bump buffer and counters according to read size. */
+    cursize += sz;
+    buffer += sz;
+    bufsize -= sz;
+  }
+
+#ifdef CURL_DOES_CONVERSIONS
+      if(part->easy && convbuf < buffer &&
+         part->state.state < MIMESTATE_BODY) {
+        CURLcode result = Curl_convert_to_network(part->easy, convbuf,
+                                                  buffer - convbuf);
+        if(result)
+          return READ_ERROR;
+      }
+#endif
+
+  return cursize;
+}
+
+/* Readback from mime. */
+static size_t mime_subparts_read(char *buffer, size_t size, size_t nitems,
+                                 void *instream)
+{
+  curl_mime *mime = (curl_mime *) instream;
+  size_t cursize = 0;
+  size_t sz;
+  curl_mimepart *part;
+#ifdef CURL_DOES_CONVERSIONS
+  char *convbuf = buffer;
+#endif
+
+  (void) size;   /* Always 1. */
+
+  while(nitems) {
+    sz = 0;
+    part = mime->state.ptr;
+    switch(mime->state.state) {
+    case MIMESTATE_BEGIN:
+    case MIMESTATE_BODY:
+#ifdef CURL_DOES_CONVERSIONS
+      convbuf = buffer;
+#endif
+      mimesetstate(&mime->state, MIMESTATE_BOUNDARY1, mime->firstpart);
+      /* The first boundary always follows the header termination empty line,
+         so is always preceded by a CRLK. We can then spare 2 characters
+         by skipping the leading CRLF in boundary. */
+      mime->state.offset += 2;
+      break;
+    case MIMESTATE_BOUNDARY1:
+      sz = readback_bytes(&mime->state, buffer, nitems, "\r\n--", 4, "");
+      if(!sz)
+        mimesetstate(&mime->state, MIMESTATE_BOUNDARY2, part);
+      break;
+    case MIMESTATE_BOUNDARY2:
+      sz = readback_bytes(&mime->state, buffer, nitems, mime->boundary,
+                          strlen(mime->boundary), part? "\r\n": "--\r\n");
+      if(!sz) {
+#ifdef CURL_DOES_CONVERSIONS
+        if(mime->easy && convbuf < buffer) {
+          CURLcode result = Curl_convert_to_network(mime->easy, convbuf,
+                                                    buffer - convbuf);
+          if(result)
+            return READ_ERROR;
+          convbuf = buffer;
+        }
+#endif
+        mimesetstate(&mime->state, MIMESTATE_CONTENT, part);
+      }
+      break;
+    case MIMESTATE_CONTENT:
+      if(!part) {
+        mimesetstate(&mime->state, MIMESTATE_END, NULL);
+        break;
+      }
+      sz = readback_part(part, buffer, nitems);
+      switch(sz) {
+      case CURL_READFUNC_ABORT:
+      case CURL_READFUNC_PAUSE:
+      case READ_ERROR:
+        return cursize? cursize: sz;
+      case 0:
+#ifdef CURL_DOES_CONVERSIONS
+        convbuf = buffer;
+#endif
+        mimesetstate(&mime->state, MIMESTATE_BOUNDARY1, part->nextpart);
+        break;
+      }
+      break;
+    case MIMESTATE_END:
+      return cursize;
+    default:
+      break;    /* other values not used in mime state. */
+    }
+
+    /* Bump buffer and counters according to read size. */
+    cursize += sz;
+    buffer += sz;
+    nitems -= sz;
+  }
+
+#ifdef CURL_DOES_CONVERSIONS
+      if(mime->easy && convbuf < buffer &&
+         mime->state.state <= MIMESTATE_CONTENT) {
+        CURLcode result = Curl_convert_to_network(mime->easy, convbuf,
+                                                  buffer - convbuf);
+        if(result)
+          return READ_ERROR;
+      }
+#endif
+
+  return cursize;
+}
+
+static int mime_part_rewind(curl_mimepart *part)
+{
+  int res = CURL_SEEKFUNC_OK;
+  enum mimestate targetstate = MIMESTATE_BEGIN;
+
+  if(part->flags & MIME_BODY_ONLY)
+    targetstate = MIMESTATE_BODY;
+  cleanup_encoder_state(&part->encstate);
+  if(part->state.state > targetstate) {
+    res = CURL_SEEKFUNC_CANTSEEK;
+    if(part->seekfunc) {
+      res = part->seekfunc(part->arg, (curl_off_t) 0, SEEK_SET);
+      switch(res) {
+      case CURL_SEEKFUNC_OK:
+      case CURL_SEEKFUNC_FAIL:
+      case CURL_SEEKFUNC_CANTSEEK:
+        break;
+      case -1:    /* For fseek() error. */
+        res = CURL_SEEKFUNC_CANTSEEK;
+        break;
+      default:
+        res = CURL_SEEKFUNC_FAIL;
+        break;
+      }
+    }
+  }
+
+  if(res == CURL_SEEKFUNC_OK)
+    mimesetstate(&part->state, targetstate, NULL);
+
+  return res;
+}
+
+static int mime_subparts_seek(void *instream, curl_off_t offset, int whence)
+{
+  curl_mime *mime = (curl_mime *) instream;
+  curl_mimepart *part;
+  int result = CURL_SEEKFUNC_OK;
+  int res;
+
+  if(whence != SEEK_SET || offset)
+    return CURL_SEEKFUNC_CANTSEEK;    /* Only support full rewind. */
+
+  if(mime->state.state == MIMESTATE_BEGIN)
+   return CURL_SEEKFUNC_OK;           /* Already rewound. */
+
+  for(part = mime->firstpart; part; part = part->nextpart) {
+    res = mime_part_rewind(part);
+    if(res != CURL_SEEKFUNC_OK)
+      result = res;
+  }
+
+  if(result == CURL_SEEKFUNC_OK)
+    mimesetstate(&mime->state, MIMESTATE_BEGIN, NULL);
+
+  return result;
+}
+
+static void mime_subparts_free(void *ptr)
+{
+  curl_mime *mime = (curl_mime *) ptr;
+  curl_mime_free(mime);
+}
+
+
+/* Release part content. */
+static void cleanup_part_content(curl_mimepart *part)
+{
+  if(part->freefunc)
+    part->freefunc(part->arg);
+
+  part->readfunc = NULL;
+  part->seekfunc = NULL;
+  part->freefunc = NULL;
+  part->arg = (void *) part;          /* Defaults to part itself. */
+  part->data = NULL;
+  part->fp = NULL;
+  part->datasize = (curl_off_t) 0;    /* No size yet. */
+  part->encoder = NULL;
+  cleanup_encoder_state(&part->encstate);
+  part->kind = MIMEKIND_NONE;
+}
+
+void Curl_mime_cleanpart(curl_mimepart *part)
+{
+  cleanup_part_content(part);
+  curl_slist_free_all(part->curlheaders);
+  if(part->flags & MIME_USERHEADERS_OWNER)
+    curl_slist_free_all(part->userheaders);
+  Curl_safefree(part->mimetype);
+  Curl_safefree(part->name);
+  Curl_safefree(part->filename);
+  Curl_mime_initpart(part, part->easy);
+}
+
+/* Recursively delete a mime handle and its parts. */
+void curl_mime_free(curl_mime *mime)
+{
+  curl_mimepart *part;
+
+  if(mime) {
+    while(mime->firstpart) {
+      part = mime->firstpart;
+      mime->firstpart = part->nextpart;
+      Curl_mime_cleanpart(part);
+      free(part);
+    }
+
+    free(mime->boundary);
+    free(mime);
+  }
+}
+
+/*
+ * Mime build functions.
+ */
+
+/* Create a mime handle. */
+curl_mime *curl_mime_init(struct Curl_easy *easy)
+{
+  curl_mime *mime;
+
+  mime = (curl_mime *) malloc(sizeof *mime);
+
+  if(mime) {
+    mime->easy = easy;
+    mime->parent = NULL;
+    mime->firstpart = NULL;
+    mime->lastpart = NULL;
+
+    /* Get a part boundary. */
+    mime->boundary = malloc(24 + MIME_RAND_BOUNDARY_CHARS + 1);
+    if(!mime->boundary) {
+      free(mime);
+      return NULL;
+    }
+
+    memset(mime->boundary, '-', 24);
+    Curl_rand_hex(easy, (unsigned char *) mime->boundary + 24,
+                  MIME_RAND_BOUNDARY_CHARS + 1);
+    mimesetstate(&mime->state, MIMESTATE_BEGIN, NULL);
+  }
+
+  return mime;
+}
+
+/* Initialize a mime part. */
+void Curl_mime_initpart(curl_mimepart *part, struct Curl_easy *easy)
+{
+  memset((char *) part, 0, sizeof *part);
+  part->easy = easy;
+  mimesetstate(&part->state, MIMESTATE_BEGIN, NULL);
+}
+
+/* Create a mime part and append it to a mime handle's part list. */
+curl_mimepart *curl_mime_addpart(curl_mime *mime)
+{
+  curl_mimepart *part;
+
+  if(!mime)
+    return NULL;
+
+  part = (curl_mimepart *) malloc(sizeof *part);
+
+  if(part) {
+    Curl_mime_initpart(part, mime->easy);
+    part->parent = mime;
+
+    if(mime->lastpart)
+      mime->lastpart->nextpart = part;
+    else
+      mime->firstpart = part;
+
+    mime->lastpart = part;
+  }
+
+  return part;
+}
+
+/* Set mime part name. */
+CURLcode curl_mime_name(curl_mimepart *part, const char *name)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  Curl_safefree(part->name);
+  part->name = NULL;
+
+  if(name) {
+    part->name = strdup(name);
+    if(!part->name)
+      return CURLE_OUT_OF_MEMORY;
+  }
+
+  return CURLE_OK;
+}
+
+/* Set mime part remote file name. */
+CURLcode curl_mime_filename(curl_mimepart *part, const char *filename)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  Curl_safefree(part->filename);
+  part->filename = NULL;
+
+  if(filename) {
+    part->filename = strdup(filename);
+    if(!part->filename)
+      return CURLE_OUT_OF_MEMORY;
+  }
+
+  return CURLE_OK;
+}
+
+/* Set mime part content from memory data. */
+CURLcode curl_mime_data(curl_mimepart *part,
+                        const char *data, size_t datasize)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  cleanup_part_content(part);
+
+  if(data) {
+    if(datasize == CURL_ZERO_TERMINATED)
+      datasize = strlen(data);
+
+    part->data = malloc(datasize + 1);
+    if(!part->data)
+      return CURLE_OUT_OF_MEMORY;
+
+    part->datasize = datasize;
+
+    if(datasize)
+      memcpy(part->data, data, datasize);
+    part->data[datasize] = '\0';    /* Set a nul terminator as sentinel. */
+
+    part->readfunc = mime_mem_read;
+    part->seekfunc = mime_mem_seek;
+    part->freefunc = mime_mem_free;
+    part->kind = MIMEKIND_DATA;
+  }
+
+  return CURLE_OK;
+}
+
+/* Set mime part content from named local file. */
+CURLcode curl_mime_filedata(curl_mimepart *part, const char *filename)
+{
+  CURLcode result = CURLE_OK;
+  char *base;
+
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  cleanup_part_content(part);
+
+  if(filename) {
+    struct_stat sbuf;
+
+    if(stat(filename, &sbuf) || access(filename, R_OK))
+      result = CURLE_READ_ERROR;
+
+    part->data = strdup(filename);
+    if(!part->data)
+      result = CURLE_OUT_OF_MEMORY;
+
+    part->datasize = -1;
+    if(!result && S_ISREG(sbuf.st_mode)) {
+      part->datasize = filesize(filename, sbuf);
+      part->seekfunc = mime_file_seek;
+    }
+
+    part->readfunc = mime_file_read;
+    part->freefunc = mime_file_free;
+    part->kind = MIMEKIND_FILE;
+
+    /* As a side effect, set the filename to the current file's base name.
+       It is possible to withdraw this by explicitly calling
+       curl_mime_filename() with a NULL filename argument after the current
+       call. */
+    base = strippath(filename);
+    if(!base)
+      result = CURLE_OUT_OF_MEMORY;
+    else {
+      CURLcode res = curl_mime_filename(part, base);
+
+      if(res)
+        result = res;
+      free(base);
+    }
+  }
+  return result;
+}
+
+/* Set mime part type. */
+CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  Curl_safefree(part->mimetype);
+  part->mimetype = NULL;
+
+  if(mimetype) {
+    part->mimetype = strdup(mimetype);
+    if(!part->mimetype)
+      return CURLE_OUT_OF_MEMORY;
+  }
+
+  return CURLE_OK;
+}
+
+/* Set mime data transfer encoder. */
+CURLcode curl_mime_encoder(curl_mimepart *part, const char *encoding)
+{
+  CURLcode result = CURLE_BAD_FUNCTION_ARGUMENT;
+  const mime_encoder *mep;
+
+  if(!part)
+    return result;
+
+  part->encoder = NULL;
+
+  if(!encoding)
+    return CURLE_OK;    /* Removing current encoder. */
+
+  for(mep = encoders; mep->name; mep++)
+    if(strcasecompare(encoding, mep->name)) {
+      part->encoder = mep;
+      result = CURLE_OK;
+    }
+
+  return result;
+}
+
+/* Set mime part headers. */
+CURLcode curl_mime_headers(curl_mimepart *part,
+                           struct curl_slist *headers, int take_ownership)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  if(part->flags & MIME_USERHEADERS_OWNER) {
+    curl_slist_free_all(part->userheaders);
+    part->flags &= ~MIME_USERHEADERS_OWNER;
+  }
+  part->userheaders = headers;
+  if(headers && take_ownership)
+    part->flags |= MIME_USERHEADERS_OWNER;
+  return CURLE_OK;
+}
+
+/* Set mime part content from callback. */
+CURLcode curl_mime_data_cb(curl_mimepart *part, curl_off_t datasize,
+                           curl_read_callback readfunc,
+                           curl_seek_callback seekfunc,
+                           curl_free_callback freefunc, void *arg)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  cleanup_part_content(part);
+
+  if(readfunc) {
+    part->readfunc = readfunc;
+    part->seekfunc = seekfunc;
+    part->freefunc = freefunc;
+    part->arg = arg;
+    part->datasize = datasize;
+    part->kind = MIMEKIND_CALLBACK;
+  }
+
+  return CURLE_OK;
+}
+
+/* Set mime part content from subparts. */
+CURLcode curl_mime_subparts(curl_mimepart *part,
+                            curl_mime *subparts)
+{
+  if(!part)
+    return CURLE_BAD_FUNCTION_ARGUMENT;
+
+  /* Accept setting twice the same subparts. */
+  if(part->kind == MIMEKIND_MULTIPART && part->arg == subparts)
+    return CURLE_OK;
+
+  cleanup_part_content(part);
+
+  if(subparts) {
+    /* Must belong to the same data handle. */
+    if(part->easy && subparts->easy && part->easy != subparts->easy)
+      return CURLE_BAD_FUNCTION_ARGUMENT;
+
+    /* Should not have been attached already. */
+    if(subparts->parent)
+      return CURLE_BAD_FUNCTION_ARGUMENT;
+
+    subparts->parent = part;
+    part->readfunc = mime_subparts_read;
+    part->seekfunc = mime_subparts_seek;
+    part->freefunc = mime_subparts_free;
+    part->arg = subparts;
+    part->datasize = -1;
+    part->kind = MIMEKIND_MULTIPART;
+  }
+
+  return CURLE_OK;
+}
+
+
+/* Readback from top mime. */
+/* Argument is the dummy top part. */
+size_t Curl_mime_read(char *buffer, size_t size, size_t nitems, void *instream)
+{
+  curl_mimepart *part = (curl_mimepart *) instream;
+
+  (void) size;   /* Always 1. */
+  return readback_part(part, buffer, nitems);
+}
+
+/* Rewind mime stream. */
+CURLcode Curl_mime_rewind(curl_mimepart *part)
+{
+  return mime_part_rewind(part) == CURL_SEEKFUNC_OK?
+         CURLE_OK: CURLE_SEND_FAIL_REWIND;
+}
+
+/* Compute header list size. */
+static size_t slist_size(struct curl_slist *s,
+                         size_t overhead, const char *skip)
+{
+  size_t size = 0;
+  size_t skiplen = skip? strlen(skip): 0;
+
+  for(; s; s = s->next)
+    if(!skip || !match_header(s, skip, skiplen))
+      size += strlen(s->data) + overhead;
+  return size;
+}
+
+/* Get/compute multipart size. */
+static curl_off_t multipart_size(curl_mime *mime)
+{
+  curl_off_t size;
+  curl_off_t sz;
+  size_t boundarysize;
+  curl_mimepart *part;
+
+  if(!mime)
+    return 0;           /* Not present -> empty. */
+
+  boundarysize = 4 + strlen(mime->boundary) + 2;
+  size = boundarysize;  /* Final boundary - CRLF after headers. */
+
+  for(part = mime->firstpart; part; part = part->nextpart) {
+    sz = Curl_mime_size(part);
+
+    if(sz < 0)
+      size = sz;
+
+    if(size >= 0)
+      size += boundarysize + sz;
+  }
+
+  return size;
+}
+
+/* Get/compute mime size. */
+curl_off_t Curl_mime_size(curl_mimepart *part)
+{
+  curl_off_t size;
+
+  if(part->datasize < 0 && part->kind == MIMEKIND_MULTIPART)
+    part->datasize = multipart_size(part->arg);
+
+  size = part->datasize;
+
+  if(part->encoder)
+    size = part->encoder->sizefunc(part);
+
+  if(size >= 0 && !(part->flags & MIME_BODY_ONLY)) {
+    /* Compute total part size. */
+    size += slist_size(part->curlheaders, 2, NULL);
+    size += slist_size(part->userheaders, 2, "Content-Type");
+    size += 2;    /* CRLF after headers. */
+  }
+  return size;
+}
+
+/* Add a header. */
+/* VARARGS2 */
+CURLcode Curl_mime_add_header(struct curl_slist **slp, const char *fmt, ...)
+{
+  struct curl_slist *hdr = NULL;
+  char *s = NULL;
+  va_list ap;
+
+  va_start(ap, fmt);
+  s = curl_mvaprintf(fmt, ap);
+  va_end(ap);
+
+  if(s) {
+    hdr = Curl_slist_append_nodup(*slp, s);
+    if(hdr)
+      *slp = hdr;
+    else
+      free(s);
+  }
+
+  return hdr? CURLE_OK: CURLE_OUT_OF_MEMORY;
+}
+
+/* Add a content type header. */
+static CURLcode add_content_type(struct curl_slist **slp,
+                                 const char *type, const char *boundary)
+{
+  return Curl_mime_add_header(slp, "Content-Type: %s%s%s", type,
+                              boundary? "; boundary=": "",
+                              boundary? boundary: "");
+}
+
+
+static const char *ContentTypeForFilename(const char *filename)
+{
+  unsigned int i;
+
+  /*
+   * If no content type was specified, we scan through a few well-known
+   * extensions and pick the first we match!
+   */
+  struct ContentType {
+    const char *extension;
+    const char *type;
+  };
+  static const struct ContentType ctts[] = {
+    {".gif",  "image/gif"},
+    {".jpg",  "image/jpeg"},
+    {".jpeg", "image/jpeg"},
+    {".png",  "image/png"},
+    {".svg",  "image/svg+xml"},
+    {".txt",  "text/plain"},
+    {".htm",  "text/html"},
+    {".html", "text/html"},
+    {".pdf",  "application/pdf"},
+    {".xml",  "application/xml"}
+  };
+
+  if(filename) {
+    size_t len1 = strlen(filename);
+    const char *nameend = filename + len1;
+
+    for(i = 0; i < sizeof ctts / sizeof ctts[0]; i++) {
+      size_t len2 = strlen(ctts[i].extension);
+
+      if(len1 >= len2 && strcasecompare(nameend - len2, ctts[i].extension))
+          return ctts[i].type;
+    }
+  }
+  return NULL;
+}
+
+CURLcode Curl_mime_prepare_headers(curl_mimepart *part,
+                                   const char *contenttype,
+                                   const char *disposition,
+                                   enum mimestrategy strategy)
+{
+  curl_mime *mime = NULL;
+  const char *boundary = NULL;
+  char *s;
+  const char *cte = NULL;
+  CURLcode ret = CURLE_OK;
+
+  /* Get rid of previously prepared headers. */
+  curl_slist_free_all(part->curlheaders);
+  part->curlheaders = NULL;
+
+  /* Be sure we won't access old headers later. */
+  if(part->state.state == MIMESTATE_CURLHEADERS)
+    mimesetstate(&part->state, MIMESTATE_CURLHEADERS, NULL);
+
+  /* Build the content-type header. */
+  s = search_header(part->userheaders, "Content-Type");
+  if(s)
+    contenttype = s;
+  if(part->mimetype)
+    contenttype = part->mimetype;
+  if(!contenttype) {
+    switch(part->kind) {
+    case MIMEKIND_MULTIPART:
+      contenttype = MULTIPART_CONTENTTYPE_DEFAULT;
+      break;
+    case MIMEKIND_FILE:
+      contenttype = ContentTypeForFilename(part->filename);
+      if(!contenttype)
+        contenttype = ContentTypeForFilename(part->data);
+      if(!contenttype && part->filename)
+        contenttype = FILE_CONTENTTYPE_DEFAULT;
+      break;
+    default:
+      contenttype = ContentTypeForFilename(part->filename);
+      break;
+    }
+  }
+
+  if(part->kind == MIMEKIND_MULTIPART) {
+    mime = (curl_mime *) part->arg;
+    if(mime)
+      boundary = mime->boundary;
+  }
+  else if(contenttype && strcasecompare(contenttype, "text/plain"))
+    if(strategy == MIMESTRATEGY_MAIL || !part->filename)
+      contenttype = NULL;
+
+  /* Issue content-disposition header only if not already set by caller. */
+  if(!search_header(part->userheaders, "Content-Disposition")) {
+    if(!disposition)
+      if(part->filename || part->name ||
+        (contenttype && !strncasecompare(contenttype, "multipart/", 10)))
+          disposition = DISPOSITION_DEFAULT;
+    if(disposition && curl_strequal(disposition, "attachment") &&
+     !part->name && !part->filename)
+      disposition = NULL;
+    if(disposition) {
+      char *name = NULL;
+      char *filename = NULL;
+
+      if(part->name) {
+        name = escape_string(part->name);
+        if(!name)
+          ret = CURLE_OUT_OF_MEMORY;
+      }
+      if(!ret && part->filename) {
+        filename = escape_string(part->filename);
+        if(!filename)
+          ret = CURLE_OUT_OF_MEMORY;
+      }
+      if(!ret)
+        ret = Curl_mime_add_header(&part->curlheaders,
+                                   "Content-Disposition: %s%s%s%s%s%s%s",
+                                   disposition,
+                                   name? "; name=\"": "",
+                                   name? name: "",
+                                   name? "\"": "",
+                                   filename? "; filename=\"": "",
+                                   filename? filename: "",
+                                   filename? "\"": "");
+      Curl_safefree(name);
+      Curl_safefree(filename);
+      if(ret)
+        return ret;
+      }
+    }
+
+  /* Issue Content-Type header. */
+  if(contenttype) {
+    ret = add_content_type(&part->curlheaders, contenttype, boundary);
+    if(ret)
+      return ret;
+  }
+
+  /* Content-Transfer-Encoding header. */
+  if(!search_header(part->userheaders, "Content-Transfer-Encoding")) {
+    if(part->encoder)
+      cte = part->encoder->name;
+    else if(contenttype && strategy == MIMESTRATEGY_MAIL &&
+     part->kind != MIMEKIND_MULTIPART)
+      cte = "8bit";
+    if(cte) {
+      ret = Curl_mime_add_header(&part->curlheaders,
+                                 "Content-Transfer-Encoding: %s", cte);
+      if(ret)
+        return ret;
+    }
+  }
+
+  /* If we were reading curl-generated headers, restart with new ones (this
+     should not occur). */
+  if(part->state.state == MIMESTATE_CURLHEADERS)
+    mimesetstate(&part->state, MIMESTATE_CURLHEADERS, part->curlheaders);
+
+  /* Process subparts. */
+  if(part->kind == MIMEKIND_MULTIPART && mime) {
+    curl_mimepart *subpart;
+
+    disposition = NULL;
+    if(strcasecompare(contenttype, "multipart/form-data"))
+      disposition = "form-data";
+    for(subpart = mime->firstpart; subpart; subpart = subpart->nextpart) {
+      ret = Curl_mime_prepare_headers(subpart, NULL, disposition, strategy);
+      if(ret)
+        return ret;
+    }
+  }
+  return ret;
+}
+
+#else /* !CURL_DISABLE_HTTP || !CURL_DISABLE_SMTP || !CURL_DISABLE_IMAP */
+
+/* Mime not compiled in: define stubs for externally-referenced functions. */
+curl_mime *curl_mime_init(CURL *easy)
+{
+  (void) easy;
+  return NULL;
+}
+
+void curl_mime_free(curl_mime *mime)
+{
+  (void) mime;
+}
+
+curl_mimepart *curl_mime_addpart(curl_mime *mime)
+{
+  (void) mime;
+  return NULL;
+}
+
+CURLcode curl_mime_name(curl_mimepart *part, const char *name)
+{
+  (void) part;
+  (void) name;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_filename(curl_mimepart *part, const char *filename)
+{
+  (void) part;
+  (void) filename;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_type(curl_mimepart *part, const char *mimetype)
+{
+  (void) part;
+  (void) mimetype;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_encoder(curl_mimepart *part, const char *encoding)
+{
+  (void) part;
+  (void) encoding;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_data(curl_mimepart *part,
+                        const char *data, size_t datasize)
+{
+  (void) part;
+  (void) data;
+  (void) datasize;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_filedata(curl_mimepart *part, const char *filename)
+{
+  (void) part;
+  (void) filename;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_data_cb(curl_mimepart *part,
+                           curl_off_t datasize,
+                           curl_read_callback readfunc,
+                           curl_seek_callback seekfunc,
+                           curl_free_callback freefunc,
+                           void *arg)
+{
+  (void) part;
+  (void) datasize;
+  (void) readfunc;
+  (void) seekfunc;
+  (void) freefunc;
+  (void) arg;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_subparts(curl_mimepart *part, curl_mime *subparts)
+{
+  (void) part;
+  (void) subparts;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode curl_mime_headers(curl_mimepart *part,
+                           struct curl_slist *headers, int take_ownership)
+{
+  (void) part;
+  (void) headers;
+  (void) take_ownership;
+  return CURLE_NOT_BUILT_IN;
+}
+
+void Curl_mime_initpart(curl_mimepart *part, struct Curl_easy *easy)
+{
+  (void) part;
+  (void) easy;
+}
+
+void Curl_mime_cleanpart(curl_mimepart *part)
+{
+  (void) part;
+}
+
+CURLcode Curl_mime_prepare_headers(curl_mimepart *part,
+                                   const char *contenttype,
+                                   const char *disposition,
+                                   enum mimestrategy strategy)
+{
+  (void) part;
+  (void) contenttype;
+  (void) disposition;
+  (void) strategy;
+  return CURLE_NOT_BUILT_IN;
+}
+
+curl_off_t Curl_mime_size(curl_mimepart *part)
+{
+  (void) part;
+  return (curl_off_t) -1;
+}
+
+size_t Curl_mime_read(char *buffer, size_t size, size_t nitems, void *instream)
+{
+  (void) buffer;
+  (void) size;
+  (void) nitems;
+  (void) instream;
+  return 0;
+}
+
+CURLcode Curl_mime_rewind(curl_mimepart *part)
+{
+  (void) part;
+  return CURLE_NOT_BUILT_IN;
+}
+
+/* VARARGS2 */
+CURLcode Curl_mime_add_header(struct curl_slist **slp, const char *fmt, ...)
+{
+  (void) slp;
+  (void) fmt;
+  return CURLE_NOT_BUILT_IN;
+}
+
+#endif /* !CURL_DISABLE_HTTP || !CURL_DISABLE_SMTP || !CURL_DISABLE_IMAP */
diff --git a/lib/mime.h b/lib/mime.h
new file mode 100644
index 0000000..a144857
--- /dev/null
+++ b/lib/mime.h
@@ -0,0 +1,135 @@
+#ifndef HEADER_CURL_MIME_H
+#define HEADER_CURL_MIME_H
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+
+#define MIME_RAND_BOUNDARY_CHARS        16  /* Nb. of random boundary chars. */
+#define MAX_ENCODED_LINE_LENGTH         76  /* Maximum encoded line length. */
+#define ENCODING_BUFFER_SIZE            256 /* Encoding temp buffers size. */
+
+/* Part flags. */
+#define MIME_USERHEADERS_OWNER  (1 << 0)
+#define MIME_BODY_ONLY          (1 << 1)
+
+/* Part source kinds. */
+enum mimekind {
+  MIMEKIND_NONE = 0,            /* Part not set. */
+  MIMEKIND_DATA,                /* Allocated mime data. */
+  MIMEKIND_FILE,                /* Data from file. */
+  MIMEKIND_CALLBACK,            /* Data from `read' callback. */
+  MIMEKIND_MULTIPART,           /* Data is a mime subpart. */
+  MIMEKIND_LAST
+};
+
+/* Readback state tokens. */
+enum mimestate {
+  MIMESTATE_BEGIN,              /* Readback has not yet started. */
+  MIMESTATE_CURLHEADERS,        /* In curl-generated headers. */
+  MIMESTATE_USERHEADERS,        /* In caller's supplied headers. */
+  MIMESTATE_EOH,                /* End of headers. */
+  MIMESTATE_BODY,               /* Placeholder. */
+  MIMESTATE_BOUNDARY1,          /* In boundary prefix. */
+  MIMESTATE_BOUNDARY2,          /* In boundary. */
+  MIMESTATE_CONTENT,            /* In content. */
+  MIMESTATE_END,                /* End of part reached. */
+  MIMESTATE_LAST
+};
+
+/* Mime headers strategies. */
+enum mimestrategy {
+  MIMESTRATEGY_MAIL,            /* Mime mail. */
+  MIMESTRATEGY_FORM,            /* HTTP post form. */
+  MIMESTRATEGY_LAST
+};
+
+/* Content transfer encoder. */
+typedef struct {
+  const char *   name;          /* Encoding name. */
+  size_t         (*encodefunc)(char *buffer, size_t size, bool ateof,
+                             curl_mimepart *part);  /* Encoded read. */
+  curl_off_t     (*sizefunc)(curl_mimepart *part);  /* Encoded size. */
+}  mime_encoder;
+
+/* Content transfer encoder state. */
+typedef struct {
+  size_t         pos;           /* Position on output line. */
+  size_t         bufbeg;        /* Next data index in input buffer. */
+  size_t         bufend;        /* First unused byte index in input buffer. */
+  char           buf[ENCODING_BUFFER_SIZE]; /* Input buffer. */
+}  mime_encoder_state;
+
+/* Mime readback state. */
+typedef struct {
+  enum mimestate state;       /* Current state token. */
+  void *ptr;                  /* State-dependent pointer. */
+  size_t offset;              /* State-dependent offset. */
+}  mime_state;
+
+/* A mime multipart. */
+struct curl_mime_s {
+  struct Curl_easy *easy;          /* The associated easy handle. */
+  curl_mimepart *parent;           /* Parent part. */
+  curl_mimepart *firstpart;        /* First part. */
+  curl_mimepart *lastpart;         /* Last part. */
+  char *boundary;                  /* The part boundary. */
+  mime_state state;                /* Current readback state. */
+};
+
+/* A mime part. */
+struct curl_mimepart_s {
+  struct Curl_easy *easy;          /* The associated easy handle. */
+  curl_mime *parent;               /* Parent mime structure. */
+  curl_mimepart *nextpart;         /* Forward linked list. */
+  enum mimekind kind;              /* The part kind. */
+  char *data;                      /* Memory data or file name. */
+  curl_read_callback readfunc;     /* Read function. */
+  curl_seek_callback seekfunc;     /* Seek function. */
+  curl_free_callback freefunc;     /* Argument free function. */
+  void *arg;                       /* Argument to callback functions. */
+  FILE *fp;                        /* File pointer. */
+  struct curl_slist *curlheaders;  /* Part headers. */
+  struct curl_slist *userheaders;  /* Part headers. */
+  char *mimetype;                  /* Part mime type. */
+  char *filename;                  /* Remote file name. */
+  char *name;                      /* Data name. */
+  curl_off_t datasize;             /* Expected data size. */
+  unsigned int flags;              /* Flags. */
+  mime_state state;                /* Current readback state. */
+  const mime_encoder *encoder;     /* Content data encoder. */
+  mime_encoder_state encstate;     /* Data encoder state. */
+};
+
+
+/* Prototypes. */
+void Curl_mime_initpart(curl_mimepart *part, struct Curl_easy *easy);
+void Curl_mime_cleanpart(curl_mimepart *part);
+CURLcode Curl_mime_prepare_headers(curl_mimepart *part,
+                                   const char *contenttype,
+                                   const char *disposition,
+                                   enum mimestrategy strategy);
+curl_off_t Curl_mime_size(curl_mimepart *part);
+size_t Curl_mime_read(char *buffer, size_t size, size_t nitems,
+                      void *instream);
+CURLcode Curl_mime_rewind(curl_mimepart *part);
+CURLcode Curl_mime_add_header(struct curl_slist **slp, const char *fmt, ...);
+
+#endif /* HEADER_CURL_MIME_H */
diff --git a/lib/mprintf.c b/lib/mprintf.c
index eb7ee0c..d2d91d7 100644
--- a/lib/mprintf.c
+++ b/lib/mprintf.c
@@ -46,10 +46,6 @@
  * If SIZEOF_SIZE_T has not been defined, default to the size of long.
  */
 
-#ifndef SIZEOF_SIZE_T
-#  define SIZEOF_SIZE_T CURL_SIZEOF_LONG
-#endif
-
 #ifdef HAVE_LONGLONG
 #  define LONG_LONG_TYPE long long
 #  define HAVE_LONG_LONG_TYPE
@@ -111,7 +107,7 @@ static const char upper_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
   } WHILE_FALSE
 
 /* Data type to read from the arglist */
-typedef enum  {
+typedef enum {
   FORMAT_UNKNOWN = 0,
   FORMAT_STRING,
   FORMAT_PTR,
@@ -181,7 +177,7 @@ struct asprintf {
 
 static long dprintf_DollarString(char *input, char **end)
 {
-  int number=0;
+  int number = 0;
   while(ISDIGIT(*input)) {
     number *= 10;
     number += *input-'0';
@@ -237,7 +233,7 @@ static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
   long width;
   long precision;
   int flags;
-  long max_param=0;
+  long max_param = 0;
   long i;
 
   while(*fmt) {
@@ -326,7 +322,7 @@ static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
           break;
 #if defined(MP_HAVE_INT_EXTENSIONS)
         case 'I':
-#if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
+#if (SIZEOF_CURL_OFF_T > SIZEOF_LONG)
           flags |= FLAGS_LONGLONG;
 #else
           flags |= FLAGS_LONG;
@@ -348,14 +344,14 @@ static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
         case 'z':
           /* the code below generates a warning if -Wunreachable-code is
              used */
-#if (SIZEOF_SIZE_T > CURL_SIZEOF_LONG)
+#if (SIZEOF_SIZE_T > SIZEOF_LONG)
           flags |= FLAGS_LONGLONG;
 #else
           flags |= FLAGS_LONG;
 #endif
           break;
         case 'O':
-#if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
+#if (SIZEOF_CURL_OFF_T > SIZEOF_LONG)
           flags |= FLAGS_LONGLONG;
 #else
           flags |= FLAGS_LONG;
@@ -380,7 +376,7 @@ static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
           else
             width = param_num;
           if(width > max_param)
-            max_param=width;
+            max_param = width;
           break;
         default:
           break;
@@ -486,7 +482,7 @@ static int dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
   }
 
   /* Read the arg list parameters into our data list */
-  for(i=0; i<max_param; i++) {
+  for(i = 0; i<max_param; i++) {
     /* Width/precision arguments must be read before the main argument
        they are attached to */
     if(vto[i].flags & FLAGS_WIDTHPARAM) {
@@ -573,7 +569,7 @@ static int dprintf_formatf(
   int done = 0;
 
   long param; /* current parameter to read */
-  long param_num=0; /* parameter counter */
+  long param_num = 0; /* parameter counter */
 
   va_stack_t vto[MAX_PARAMETERS];
   char *endpos[MAX_PARAMETERS];
@@ -643,7 +639,7 @@ static int dprintf_formatf(
 
     /* If this is a positional parameter, the position must follow immediately
        after the %, thus create a %<num>$ sequence */
-    param=dprintf_DollarString(f, &f);
+    param = dprintf_DollarString(f, &f);
 
     if(!param)
       param = param_num;
@@ -952,7 +948,7 @@ static int dprintf_formatf(
            output characters */
         (sprintf)(work, formatbuf, p->data.dnum);
         DEBUGASSERT(strlen(work) <= sizeof(work));
-        for(fptr=work; *fptr; fptr++)
+        for(fptr = work; *fptr; fptr++)
           OUTCHAR(*fptr);
       }
       break;
@@ -984,7 +980,7 @@ static int dprintf_formatf(
 /* fputc() look-alike */
 static int addbyter(int output, FILE *data)
 {
-  struct nsprintf *infop=(struct nsprintf *)data;
+  struct nsprintf *infop = (struct nsprintf *)data;
   unsigned char outc = (unsigned char)output;
 
   if(infop->length < infop->max) {
@@ -1032,7 +1028,7 @@ int curl_msnprintf(char *buffer, size_t maxlength, const char *format, ...)
 /* fputc() look-alike */
 static int alloc_addbyter(int output, FILE *data)
 {
-  struct asprintf *infop=(struct asprintf *)data;
+  struct asprintf *infop = (struct asprintf *)data;
   unsigned char outc = (unsigned char)output;
 
   if(!infop->buffer) {
@@ -1042,9 +1038,9 @@ static int alloc_addbyter(int output, FILE *data)
       return -1; /* fail */
     }
     infop->alloc = 32;
-    infop->len =0;
+    infop->len = 0;
   }
-  else if(infop->len+1 >= infop->alloc) {
+  else if(infop->len + 1 >= infop->alloc) {
     char *newptr = NULL;
     size_t newsize = infop->alloc*2;
 
@@ -1133,7 +1129,7 @@ int curl_msprintf(char *buffer, const char *format, ...)
   va_start(ap_save, format);
   retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save);
   va_end(ap_save);
-  *buffer=0; /* we terminate this with a zero byte */
+  *buffer = 0; /* we terminate this with a zero byte */
   return retcode;
 }
 
@@ -1162,7 +1158,7 @@ int curl_mvsprintf(char *buffer, const char *format, va_list ap_save)
 {
   int retcode;
   retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save);
-  *buffer=0; /* we terminate this with a zero byte */
+  *buffer = 0; /* we terminate this with a zero byte */
   return retcode;
 }
 
diff --git a/lib/multi.c b/lib/multi.c
index c3a0d12..70aa6bc 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -44,6 +44,7 @@
 #include "sigpipe.h"
 #include "vtls/vtls.h"
 #include "connect.h"
+#include "http_proxy.h"
 /* The last 3 #include files should be in this order */
 #include "curl_printf.h"
 #include "curl_memory.h"
@@ -69,7 +70,7 @@ static void singlesocket(struct Curl_multi *multi,
                          struct Curl_easy *data);
 static int update_timer(struct Curl_multi *multi);
 
-static CURLMcode add_next_timeout(struct timeval now,
+static CURLMcode add_next_timeout(struct curltime now,
                                   struct Curl_multi *multi,
                                   struct Curl_easy *d);
 static CURLMcode multi_timeout(struct Curl_multi *multi,
@@ -114,6 +115,13 @@ static void mstate(struct Curl_easy *data, CURLMstate state
     NULL,
     NULL,
     Curl_init_CONNECT, /* CONNECT */
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    Curl_connect_free /* DO */
     /* the rest is NULL too */
   };
 
@@ -584,7 +592,7 @@ static CURLcode multi_done(struct connectdata **connp,
 
   /* if the transfer was completed in a paused state there can be buffered
      data left to free */
-  for(i=0; i < data->state.tempcount; i++) {
+  for(i = 0; i < data->state.tempcount; i++) {
     free(data->state.tempwrite[i].buf);
   }
   data->state.tempcount = 0;
@@ -794,8 +802,8 @@ static int waitconnect_getsock(struct connectdata *conn,
                                int numsocks)
 {
   int i;
-  int s=0;
-  int rc=0;
+  int s = 0;
+  int rc = 0;
 
   if(!numsocks)
     return GETSOCK_BLANK;
@@ -805,7 +813,7 @@ static int waitconnect_getsock(struct connectdata *conn,
     return Curl_ssl_getsock(conn, sock, numsocks);
 #endif
 
-  for(i=0; i<2; i++) {
+  for(i = 0; i<2; i++) {
     if(conn->tempsock[i] != CURL_SOCKET_BAD) {
       sock[s] = conn->tempsock[i];
       rc |= GETSOCK_WRITESOCK(s++);
@@ -826,7 +834,7 @@ static int waitproxyconnect_getsock(struct connectdata *conn,
 
   /* when we've sent a CONNECT to a proxy, we should rather wait for the
      socket to become readable to be able to get the response headers */
-  if(conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
+  if(conn->connect_state)
     return GETSOCK_READSOCK(0);
 
   return GETSOCK_WRITESOCK(0);
@@ -916,7 +924,7 @@ CURLMcode curl_multi_fdset(struct Curl_multi *multi,
      Some easy handles may not have connected to the remote host yet,
      and then we must make sure that is done. */
   struct Curl_easy *data;
-  int this_max_fd=-1;
+  int this_max_fd = -1;
   curl_socket_t sockbunch[MAX_SOCKSPEREASYHANDLE];
   int bitmap;
   int i;
@@ -925,11 +933,11 @@ CURLMcode curl_multi_fdset(struct Curl_multi *multi,
   if(!GOOD_MULTI_HANDLE(multi))
     return CURLM_BAD_HANDLE;
 
-  data=multi->easyp;
+  data = multi->easyp;
   while(data) {
     bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE);
 
-    for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) {
+    for(i = 0; i< MAX_SOCKSPEREASYHANDLE; i++) {
       curl_socket_t s = CURL_SOCKET_BAD;
 
       if((bitmap & GETSOCK_READSOCK(i)) && VALID_SOCK((sockbunch[i]))) {
@@ -986,11 +994,11 @@ CURLMcode curl_multi_wait(struct Curl_multi *multi,
     timeout_ms = (int)timeout_internal;
 
   /* Count up how many fds we have from the multi handle */
-  data=multi->easyp;
+  data = multi->easyp;
   while(data) {
     bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE);
 
-    for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) {
+    for(i = 0; i< MAX_SOCKSPEREASYHANDLE; i++) {
       curl_socket_t s = CURL_SOCKET_BAD;
 
       if(bitmap & GETSOCK_READSOCK(i)) {
@@ -1014,6 +1022,10 @@ CURLMcode curl_multi_wait(struct Curl_multi *multi,
 
   if(nfds) {
     if(nfds > NUM_POLLS_ON_STACK) {
+      /* 'nfds' is a 32 bit value and 'struct pollfd' is typically 8 bytes
+         big, so at 2^29 sockets this value might wrap. When a process gets
+         the capability to actually handle over 500 million sockets this
+         calculation needs a integer overflow check. */
       ufds = malloc(nfds * sizeof(struct pollfd));
       if(!ufds)
         return CURLM_OUT_OF_MEMORY;
@@ -1029,11 +1041,11 @@ CURLMcode curl_multi_wait(struct Curl_multi *multi,
 
   if(curlfds) {
     /* Add the curl handles to our pollfds first */
-    data=multi->easyp;
+    data = multi->easyp;
     while(data) {
       bitmap = multi_getsock(data, sockbunch, MAX_SOCKSPEREASYHANDLE);
 
-      for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++) {
+      for(i = 0; i< MAX_SOCKSPEREASYHANDLE; i++) {
         curl_socket_t s = CURL_SOCKET_BAD;
 
         if(bitmap & GETSOCK_READSOCK(i)) {
@@ -1217,15 +1229,15 @@ static CURLcode multi_reconnect_request(struct connectdata **connp)
  */
 static void do_complete(struct connectdata *conn)
 {
-  conn->data->req.chunk=FALSE;
+  conn->data->req.chunk = FALSE;
   conn->data->req.maxfd = (conn->sockfd>conn->writesockfd?
-                           conn->sockfd:conn->writesockfd)+1;
+                           conn->sockfd:conn->writesockfd) + 1;
   Curl_pgrsTime(conn->data, TIMER_PRETRANSFER);
 }
 
 static CURLcode multi_do(struct connectdata **connp, bool *done)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
   struct connectdata *conn = *connp;
   struct Curl_easy *data = conn->data;
 
@@ -1274,7 +1286,7 @@ static CURLcode multi_do(struct connectdata **connp, bool *done)
 
 static CURLcode multi_do_more(struct connectdata *conn, int *complete)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
 
   *complete = 0;
 
@@ -1289,7 +1301,7 @@ static CURLcode multi_do_more(struct connectdata *conn, int *complete)
 }
 
 static CURLMcode multi_runsingle(struct Curl_multi *multi,
-                                 struct timeval now,
+                                 struct curltime now,
                                  struct Curl_easy *data)
 {
   struct Curl_message *msg = NULL;
@@ -1403,7 +1415,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
     switch(data->mstate) {
     case CURLM_STATE_INIT:
       /* init this transfer. */
-      result=Curl_pretransfer(data);
+      result = Curl_pretransfer(data);
 
       if(!result) {
         /* after init, go CONNECT */
@@ -1455,7 +1467,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
                          CURLM_STATE_WAITDO:CURLM_STATE_DO);
             else {
 #ifndef CURL_DISABLE_HTTP
-              if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
+              if(Curl_connect_ongoing(data->easy_conn))
                 multistate(data, CURLM_STATE_WAITPROXYCONNECT);
               else
 #endif
@@ -1520,7 +1532,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
                        CURLM_STATE_WAITDO:CURLM_STATE_DO);
           else {
 #ifndef CURL_DISABLE_HTTP
-            if(data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)
+            if(Curl_connect_ongoing(data->easy_conn))
               multistate(data, CURLM_STATE_WAITPROXYCONNECT);
             else
 #endif
@@ -1552,7 +1564,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
       else if(!result) {
         if((data->easy_conn->http_proxy.proxytype != CURLPROXY_HTTPS ||
            data->easy_conn->bits.proxy_ssl_connected[FIRSTSOCKET]) &&
-           (data->easy_conn->tunnel_state[FIRSTSOCKET] != TUNNEL_CONNECT)) {
+           Curl_connect_complete(data->easy_conn)) {
           rc = CURLM_CALL_MULTI_PERFORM;
           /* initiate protocol connect phase */
           multistate(data, CURLM_STATE_SENDPROTOCONNECT);
@@ -1568,7 +1580,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
 #ifndef CURL_DISABLE_HTTP
         if((data->easy_conn->http_proxy.proxytype == CURLPROXY_HTTPS &&
             !data->easy_conn->bits.proxy_ssl_connected[FIRSTSOCKET]) ||
-            (data->easy_conn->tunnel_state[FIRSTSOCKET] == TUNNEL_CONNECT)) {
+           Curl_connect_ongoing(data->easy_conn)) {
           multistate(data, CURLM_STATE_WAITPROXYCONNECT);
           break;
         }
@@ -1685,7 +1697,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
            * back to the CONNECT phase so we can try again.
            */
           char *newurl = NULL;
-          followtype follow=FOLLOW_NONE;
+          followtype follow = FOLLOW_NONE;
           CURLcode drc;
           bool retry = FALSE;
 
@@ -1771,7 +1783,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
         if(control) {
           /* if positive, advance to DO_DONE
              if negative, go back to DOING */
-          multistate(data, control==1?
+          multistate(data, control == 1?
                      CURLM_STATE_DO_DONE:
                      CURLM_STATE_DOING);
           rc = CURLM_CALL_MULTI_PERFORM;
@@ -1926,7 +1938,7 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
         multi_done(&data->easy_conn, result, TRUE);
       }
       else if(done) {
-        followtype follow=FOLLOW_NONE;
+        followtype follow = FOLLOW_NONE;
 
         /* call this even if the readwrite function returned error */
         Curl_posttransfer(data);
@@ -2132,14 +2144,14 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
 CURLMcode curl_multi_perform(struct Curl_multi *multi, int *running_handles)
 {
   struct Curl_easy *data;
-  CURLMcode returncode=CURLM_OK;
+  CURLMcode returncode = CURLM_OK;
   struct Curl_tree *t;
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
 
   if(!GOOD_MULTI_HANDLE(multi))
     return CURLM_BAD_HANDLE;
 
-  data=multi->easyp;
+  data = multi->easyp;
   while(data) {
     CURLMcode result;
     SIGPIPE_VARIABLE(pipe_st);
@@ -2234,7 +2246,7 @@ CURLMcode curl_multi_cleanup(struct Curl_multi *multi)
     /* remove all easy handles */
     data = multi->easyp;
     while(data) {
-      nextdata=data->next;
+      nextdata = data->next;
       if(data->dns.hostcachetype == HCACHE_MULTI) {
         /* clear out the usage of the shared DNS cache */
         Curl_hostcache_clean(data, data->dns.hostcache);
@@ -2314,7 +2326,7 @@ static void singlesocket(struct Curl_multi *multi,
   int num;
   unsigned int curraction;
 
-  for(i=0; i< MAX_SOCKSPEREASYHANDLE; i++)
+  for(i = 0; i< MAX_SOCKSPEREASYHANDLE; i++)
     socks[i] = CURL_SOCKET_BAD;
 
   /* Fill in the 'current' struct with the state as it is now: what sockets to
@@ -2326,7 +2338,7 @@ static void singlesocket(struct Curl_multi *multi,
      longer supervised ones and add new ones */
 
   /* walk over the sockets we got right now */
-  for(i=0; (i< MAX_SOCKSPEREASYHANDLE) &&
+  for(i = 0; (i< MAX_SOCKSPEREASYHANDLE) &&
         (curraction & (GETSOCK_READSOCK(i) | GETSOCK_WRITESOCK(i)));
       i++) {
     int action = CURL_POLL_NONE;
@@ -2370,10 +2382,10 @@ static void singlesocket(struct Curl_multi *multi,
 
   /* when we've walked over all the sockets we should have right now, we must
      make sure to detect sockets that are removed */
-  for(i=0; i< data->numsocks; i++) {
+  for(i = 0; i< data->numsocks; i++) {
     int j;
     s = data->sockets[i];
-    for(j=0; j<num; j++) {
+    for(j = 0; j<num; j++) {
       if(s == socks[j]) {
         /* this is still supervised */
         s = CURL_SOCKET_BAD;
@@ -2484,11 +2496,11 @@ void Curl_multi_closed(struct connectdata *conn, curl_socket_t s)
  * The splay tree only has each sessionhandle as a single node and the nearest
  * timeout is used to sort it on.
  */
-static CURLMcode add_next_timeout(struct timeval now,
+static CURLMcode add_next_timeout(struct curltime now,
                                   struct Curl_multi *multi,
                                   struct Curl_easy *d)
 {
-  struct timeval *tv = &d->state.expiretime;
+  struct curltime *tv = &d->state.expiretime;
   struct curl_llist *list = &d->state.timeoutlist;
   struct curl_llist_element *e;
   struct time_node *node = NULL;
@@ -2520,10 +2532,8 @@ static CURLMcode add_next_timeout(struct timeval now,
     /* copy the first entry to 'tv' */
     memcpy(tv, &node->time, sizeof(*tv));
 
-    /* remove first entry from list */
-    Curl_llist_remove(list, e, NULL);
-
-    /* insert this node again into the splay */
+    /* Insert this node again into the splay.  Keep the timer in the list in
+       case we need to recompute future timers. */
     multi->timetree = Curl_splayinsert(*tv, multi->timetree,
                                        &d->state.timenode);
   }
@@ -2539,7 +2549,7 @@ static CURLMcode multi_socket(struct Curl_multi *multi,
   CURLMcode result = CURLM_OK;
   struct Curl_easy *data = NULL;
   struct Curl_tree *t;
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
 
   if(checkall) {
     /* *perform() deals with running_handles on its own */
@@ -2548,7 +2558,7 @@ static CURLMcode multi_socket(struct Curl_multi *multi,
     /* walk through each easy handle and do the socket state change magic
        and callbacks */
     if(result != CURLM_BAD_HANDLE) {
-      data=multi->easyp;
+      data = multi->easyp;
       while(data) {
         singlesocket(multi, data);
         data = data->next;
@@ -2765,11 +2775,11 @@ CURLMcode curl_multi_socket_all(struct Curl_multi *multi, int *running_handles)
 static CURLMcode multi_timeout(struct Curl_multi *multi,
                                long *timeout_ms)
 {
-  static struct timeval tv_zero = {0, 0};
+  static struct curltime tv_zero = {0, 0};
 
   if(multi->timetree) {
     /* we have a tree of expire times */
-    struct timeval now = Curl_tvnow();
+    struct curltime now = Curl_tvnow();
 
     /* splay the lowest to the bottom */
     multi->timetree = Curl_splay(tv_zero, multi->timetree);
@@ -2785,7 +2795,7 @@ static CURLMcode multi_timeout(struct Curl_multi *multi,
          * processors while the diff is still present but less than one
          * millisecond! instead we return 1 until the time is ripe.
          */
-        *timeout_ms=1;
+        *timeout_ms = 1;
     }
     else
       /* 0 means immediately */
@@ -2821,7 +2831,7 @@ static int update_timer(struct Curl_multi *multi)
     return -1;
   }
   if(timeout_ms < 0) {
-    static const struct timeval none={0, 0};
+    static const struct curltime none = {0, 0};
     if(Curl_splaycomparekeys(none, multi->timer_lastcall)) {
       multi->timer_lastcall = none;
       /* there's no timeout now but there was one previously, tell the app to
@@ -2872,7 +2882,7 @@ multi_deltimeout(struct Curl_easy *data, expire_id eid)
  */
 static CURLMcode
 multi_addtimeout(struct Curl_easy *data,
-                 struct timeval *stamp,
+                 struct curltime *stamp,
                  expire_id eid)
 {
   struct curl_llist_element *e;
@@ -2920,9 +2930,9 @@ multi_addtimeout(struct Curl_easy *data,
 void Curl_expire(struct Curl_easy *data, time_t milli, expire_id id)
 {
   struct Curl_multi *multi = data->multi;
-  struct timeval *nowp = &data->state.expiretime;
+  struct curltime *nowp = &data->state.expiretime;
   int rc;
-  struct timeval set;
+  struct curltime set;
 
   /* this is only interesting while there is still an associated multi struct
      remaining! */
@@ -2932,34 +2942,33 @@ void Curl_expire(struct Curl_easy *data, time_t milli, expire_id id)
   DEBUGASSERT(id < EXPIRE_LAST);
 
   set = Curl_tvnow();
-  set.tv_sec += (long)(milli/1000);
-  set.tv_usec += (long)(milli%1000)*1000;
+  set.tv_sec += milli/1000;
+  set.tv_usec += (unsigned int)(milli%1000)*1000;
 
   if(set.tv_usec >= 1000000) {
     set.tv_sec++;
     set.tv_usec -= 1000000;
   }
 
+  /* Remove any timer with the same id just in case. */
+  multi_deltimeout(data, id);
+
+  /* Add it to the timer list.  It must stay in the list until it has expired
+     in case we need to recompute the minimum timer later. */
+  multi_addtimeout(data, &set, id);
+
   if(nowp->tv_sec || nowp->tv_usec) {
     /* This means that the struct is added as a node in the splay tree.
        Compare if the new time is earlier, and only remove-old/add-new if it
        is. */
     time_t diff = curlx_tvdiff(set, *nowp);
 
-    /* remove the previous timer first, if there */
-    multi_deltimeout(data, id);
-
     if(diff > 0) {
-      /* the new expire time was later so just add it to the queue
-         and get out */
-      multi_addtimeout(data, &set, id);
+      /* The current splay tree entry is sooner than this new expiry time.
+         We don't need to update our splay tree entry. */
       return;
     }
 
-    /* the new time is newer than the presently set one, so add the current
-       to the queue and update the head */
-    multi_addtimeout(data, nowp, id);
-
     /* Since this is an updated time, we must remove the previous entry from
        the splay tree first and then re-add the new value */
     rc = Curl_splayremovebyaddr(multi->timetree,
@@ -2969,6 +2978,8 @@ void Curl_expire(struct Curl_easy *data, time_t milli, expire_id id)
       infof(data, "Internal error removing splay node = %d\n", rc);
   }
 
+  /* Indicate that we are in the splay tree and insert the new timer expiry
+     value since it is our local minimum. */
   *nowp = set;
   data->state.timenode.payload = data;
   multi->timetree = Curl_splayinsert(*nowp, multi->timetree,
@@ -2995,7 +3006,7 @@ void Curl_expire_done(struct Curl_easy *data, expire_id id)
 void Curl_expire_clear(struct Curl_easy *data)
 {
   struct Curl_multi *multi = data->multi;
-  struct timeval *nowp = &data->state.expiretime;
+  struct curltime *nowp = &data->state.expiretime;
   int rc;
 
   /* this is only interesting while there is still an associated multi struct
@@ -3104,13 +3115,13 @@ void Curl_multi_dump(struct Curl_multi *multi)
   int i;
   fprintf(stderr, "* Multi status: %d handles, %d alive\n",
           multi->num_easy, multi->num_alive);
-  for(data=multi->easyp; data; data = data->next) {
+  for(data = multi->easyp; data; data = data->next) {
     if(data->mstate < CURLM_STATE_COMPLETED) {
       /* only display handles that are not completed */
       fprintf(stderr, "handle %p, state %s, %d sockets\n",
               (void *)data,
               statename[data->mstate], data->numsocks);
-      for(i=0; i < data->numsocks; i++) {
+      for(i = 0; i < data->numsocks; i++) {
         curl_socket_t s = data->sockets[i];
         struct Curl_sh_entry *entry = sh_getentry(&multi->sockhash, s);
 
diff --git a/lib/multihandle.h b/lib/multihandle.h
index e6ffbf5..4057539 100644
--- a/lib/multihandle.h
+++ b/lib/multihandle.h
@@ -148,7 +148,7 @@ struct Curl_multi {
   /* timer callback and user data pointer for the *socket() API */
   curl_multi_timer_callback timer_cb;
   void *timer_userp;
-  struct timeval timer_lastcall; /* the fixed time for the timeout for the
+  struct curltime timer_lastcall; /* the fixed time for the timeout for the
                                     previous callback */
 };
 
diff --git a/lib/netrc.c b/lib/netrc.c
index 996711d..dbcc59a 100644
--- a/lib/netrc.c
+++ b/lib/netrc.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -56,14 +56,15 @@ int Curl_parsenetrc(const char *host,
                     char *netrcfile)
 {
   FILE *file;
-  int retcode=1;
+  int retcode = 1;
   int specific_login = (*loginp && **loginp != 0);
   bool netrc_alloc = FALSE;
-  enum host_lookup_state state=NOTHING;
+  enum host_lookup_state state = NOTHING;
 
-  char state_login=0;      /* Found a login keyword */
-  char state_password=0;   /* Found a password keyword */
-  int state_our_login=FALSE;  /* With specific_login, found *our* login name */
+  char state_login = 0;      /* Found a login keyword */
+  char state_password = 0;   /* Found a password keyword */
+  int state_our_login = FALSE;  /* With specific_login, found *our* login
+                                   name */
 
 #define NETRC DOT_CHAR "netrc"
 
@@ -88,7 +89,7 @@ int Curl_parsenetrc(const char *host,
     }
     else {
       struct passwd *pw;
-      pw= getpwuid(geteuid());
+      pw = getpwuid(geteuid());
       if(pw) {
         home = pw->pw_dir;
       }
@@ -113,16 +114,19 @@ int Curl_parsenetrc(const char *host,
   if(file) {
     char *tok;
     char *tok_buf;
-    bool done=FALSE;
+    bool done = FALSE;
     char netrcbuffer[256];
     int  netrcbuffsize = (int)sizeof(netrcbuffer);
 
     while(!done && fgets(netrcbuffer, netrcbuffsize, file)) {
-      tok=strtok_r(netrcbuffer, " \t\n", &tok_buf);
+      tok = strtok_r(netrcbuffer, " \t\n", &tok_buf);
+      if(tok && *tok == '#')
+        /* treat an initial hash as a comment line */
+        continue;
       while(!done && tok) {
 
         if((*loginp && **loginp) && (*passwordp && **passwordp)) {
-          done=TRUE;
+          done = TRUE;
           break;
         }
 
@@ -133,22 +137,22 @@ int Curl_parsenetrc(const char *host,
                delimiter that starts the stuff entered for this machine,
                after this we need to search for 'login' and
                'password'. */
-            state=HOSTFOUND;
+            state = HOSTFOUND;
           }
           else if(strcasecompare("default", tok)) {
-            state=HOSTVALID;
-            retcode=0; /* we did find our host */
+            state = HOSTVALID;
+            retcode = 0; /* we did find our host */
           }
           break;
         case HOSTFOUND:
           if(strcasecompare(host, tok)) {
             /* and yes, this is our host! */
-            state=HOSTVALID;
-            retcode=0; /* we did find our host */
+            state = HOSTVALID;
+            retcode = 0; /* we did find our host */
           }
           else
             /* not our host */
-            state=NOTHING;
+            state = NOTHING;
           break;
         case HOSTVALID:
           /* we are now parsing sub-keywords concerning "our" host */
@@ -164,7 +168,7 @@ int Curl_parsenetrc(const char *host,
                 goto out;
               }
             }
-            state_login=0;
+            state_login = 0;
           }
           else if(state_password) {
             if(state_our_login || !specific_login) {
@@ -175,12 +179,12 @@ int Curl_parsenetrc(const char *host,
                 goto out;
               }
             }
-            state_password=0;
+            state_password = 0;
           }
           else if(strcasecompare("login", tok))
-            state_login=1;
+            state_login = 1;
           else if(strcasecompare("password", tok))
-            state_password=1;
+            state_password = 1;
           else if(strcasecompare("machine", tok)) {
             /* ok, there's machine here go => */
             state = HOSTFOUND;
diff --git a/lib/non-ascii.c b/lib/non-ascii.c
index 2f5de4c..92b2f8d 100644
--- a/lib/non-ascii.c
+++ b/lib/non-ascii.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -82,7 +82,7 @@ CURLcode Curl_convert_clone(struct Curl_easy *data,
 CURLcode Curl_convert_to_network(struct Curl_easy *data,
                                  char *buffer, size_t length)
 {
-  if(data->set.convtonetwork) {
+  if(data && data->set.convtonetwork) {
     /* use translation callback */
     CURLcode result = data->set.convtonetwork(buffer, length);
     if(result) {
@@ -96,34 +96,37 @@ CURLcode Curl_convert_to_network(struct Curl_easy *data,
   else {
 #ifdef HAVE_ICONV
     /* do the translation ourselves */
+    iconv_t tmpcd = (iconv_t) -1;
+    iconv_t *cd = &tmpcd;
     char *input_ptr, *output_ptr;
     size_t in_bytes, out_bytes, rc;
-    int error;
 
     /* open an iconv conversion descriptor if necessary */
-    if(data->outbound_cd == (iconv_t)-1) {
-      data->outbound_cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
-                                     CURL_ICONV_CODESET_OF_HOST);
-      if(data->outbound_cd == (iconv_t)-1) {
-        error = ERRNO;
+    if(data)
+      cd = &data->outbound_cd;
+    if(*cd == (iconv_t)-1) {
+      *cd = iconv_open(CURL_ICONV_CODESET_OF_NETWORK,
+                       CURL_ICONV_CODESET_OF_HOST);
+      if(*cd == (iconv_t)-1) {
         failf(data,
               "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
               CURL_ICONV_CODESET_OF_NETWORK,
               CURL_ICONV_CODESET_OF_HOST,
-              error, strerror(error));
+              errno, strerror(errno));
         return CURLE_CONV_FAILED;
       }
     }
     /* call iconv */
     input_ptr = output_ptr = buffer;
     in_bytes = out_bytes = length;
-    rc = iconv(data->outbound_cd, (const char **)&input_ptr, &in_bytes,
+    rc = iconv(*cd, &input_ptr, &in_bytes,
                &output_ptr, &out_bytes);
+    if(!data)
+      iconv_close(tmpcd);
     if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
       failf(data,
             "The Curl_convert_to_network iconv call failed with errno %i: %s",
-            error, strerror(error));
+            errno, strerror(errno));
       return CURLE_CONV_FAILED;
     }
 #else
@@ -142,7 +145,7 @@ CURLcode Curl_convert_to_network(struct Curl_easy *data,
 CURLcode Curl_convert_from_network(struct Curl_easy *data,
                                    char *buffer, size_t length)
 {
-  if(data->set.convfromnetwork) {
+  if(data && data->set.convfromnetwork) {
     /* use translation callback */
     CURLcode result = data->set.convfromnetwork(buffer, length);
     if(result) {
@@ -156,34 +159,37 @@ CURLcode Curl_convert_from_network(struct Curl_easy *data,
   else {
 #ifdef HAVE_ICONV
     /* do the translation ourselves */
+    iconv_t tmpcd = (iconv_t) -1;
+    iconv_t *cd = &tmpcd;
     char *input_ptr, *output_ptr;
     size_t in_bytes, out_bytes, rc;
-    int error;
 
     /* open an iconv conversion descriptor if necessary */
-    if(data->inbound_cd == (iconv_t)-1) {
-      data->inbound_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                    CURL_ICONV_CODESET_OF_NETWORK);
-      if(data->inbound_cd == (iconv_t)-1) {
-        error = ERRNO;
+    if(data)
+      cd = &data->inbound_cd;
+    if(*cd == (iconv_t)-1) {
+      *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                       CURL_ICONV_CODESET_OF_NETWORK);
+      if(*cd == (iconv_t)-1) {
         failf(data,
               "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
               CURL_ICONV_CODESET_OF_HOST,
               CURL_ICONV_CODESET_OF_NETWORK,
-              error, strerror(error));
+              errno, strerror(errno));
         return CURLE_CONV_FAILED;
       }
     }
     /* call iconv */
     input_ptr = output_ptr = buffer;
     in_bytes = out_bytes = length;
-    rc = iconv(data->inbound_cd, (const char **)&input_ptr, &in_bytes,
+    rc = iconv(*cd, &input_ptr, &in_bytes,
                &output_ptr, &out_bytes);
+    if(!data)
+      iconv_close(tmpcd);
     if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
       failf(data,
             "Curl_convert_from_network iconv call failed with errno %i: %s",
-            error, strerror(error));
+            errno, strerror(errno));
       return CURLE_CONV_FAILED;
     }
 #else
@@ -202,7 +208,7 @@ CURLcode Curl_convert_from_network(struct Curl_easy *data,
 CURLcode Curl_convert_from_utf8(struct Curl_easy *data,
                                 char *buffer, size_t length)
 {
-  if(data->set.convfromutf8) {
+  if(data && data->set.convfromutf8) {
     /* use translation callback */
     CURLcode result = data->set.convfromutf8(buffer, length);
     if(result) {
@@ -216,35 +222,38 @@ CURLcode Curl_convert_from_utf8(struct Curl_easy *data,
   else {
 #ifdef HAVE_ICONV
     /* do the translation ourselves */
-    const char *input_ptr;
+    iconv_t tmpcd = (iconv_t) -1;
+    iconv_t *cd = &tmpcd;
+    char *input_ptr;
     char *output_ptr;
     size_t in_bytes, out_bytes, rc;
-    int error;
 
     /* open an iconv conversion descriptor if necessary */
-    if(data->utf8_cd == (iconv_t)-1) {
-      data->utf8_cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
-                                 CURL_ICONV_CODESET_FOR_UTF8);
-      if(data->utf8_cd == (iconv_t)-1) {
-        error = ERRNO;
+    if(data)
+      cd = &data->utf8_cd;
+    if(*cd == (iconv_t)-1) {
+      *cd = iconv_open(CURL_ICONV_CODESET_OF_HOST,
+                       CURL_ICONV_CODESET_FOR_UTF8);
+      if(*cd == (iconv_t)-1) {
         failf(data,
               "The iconv_open(\"%s\", \"%s\") call failed with errno %i: %s",
               CURL_ICONV_CODESET_OF_HOST,
               CURL_ICONV_CODESET_FOR_UTF8,
-              error, strerror(error));
+              errno, strerror(errno));
         return CURLE_CONV_FAILED;
       }
     }
     /* call iconv */
     input_ptr = output_ptr = buffer;
     in_bytes = out_bytes = length;
-    rc = iconv(data->utf8_cd, &input_ptr, &in_bytes,
+    rc = iconv(*cd, &input_ptr, &in_bytes,
                &output_ptr, &out_bytes);
+    if(!data)
+      iconv_close(tmpcd);
     if((rc == ICONV_ERROR) || (in_bytes != 0)) {
-      error = ERRNO;
       failf(data,
             "The Curl_convert_from_utf8 iconv call failed with errno %i: %s",
-            error, strerror(error));
+            errno, strerror(errno));
       return CURLE_CONV_FAILED;
     }
     if(output_ptr < input_ptr) {
@@ -310,29 +319,4 @@ void Curl_convert_close(struct Curl_easy *data)
 #endif /* HAVE_ICONV */
 }
 
-/*
- * Curl_convert_form() is used from http.c, this converts any form items that
-   need to be sent in the network encoding.  Returns CURLE_OK on success.
- */
-CURLcode Curl_convert_form(struct Curl_easy *data, struct FormData *form)
-{
-  CURLcode result;
-
-  if(!data)
-    return CURLE_BAD_FUNCTION_ARGUMENT;
-
-  while(form) {
-    if(form->type == FORM_DATA) {
-      result = Curl_convert_to_network(data, form->line, form->length);
-      /* Curl_convert_to_network calls failf if unsuccessful */
-      if(result)
-        return result;
-    }
-
-    form = form->next;
-  }
-
-  return CURLE_OK;
-}
-
 #endif /* CURL_DOES_CONVERSIONS */
diff --git a/lib/non-ascii.h b/lib/non-ascii.h
index e27f1f4..5fb5771 100644
--- a/lib/non-ascii.h
+++ b/lib/non-ascii.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -48,7 +48,6 @@ CURLcode Curl_convert_from_network(struct Curl_easy *data,
                                  char *buffer, size_t length);
 CURLcode Curl_convert_from_utf8(struct Curl_easy *data,
                                  char *buffer, size_t length);
-CURLcode Curl_convert_form(struct Curl_easy *data, struct FormData *form);
 #else
 #define Curl_convert_clone(a,b,c,d) ((void)a, CURLE_OK)
 #define Curl_convert_init(x) Curl_nop_stmt
@@ -57,7 +56,6 @@ CURLcode Curl_convert_form(struct Curl_easy *data, struct FormData *form);
 #define Curl_convert_to_network(a,b,c) ((void)a, CURLE_OK)
 #define Curl_convert_from_network(a,b,c) ((void)a, CURLE_OK)
 #define Curl_convert_from_utf8(a,b,c) ((void)a, CURLE_OK)
-#define Curl_convert_form(a,b) CURLE_OK
 #endif
 
 #endif /* HEADER_CURL_NON_ASCII_H */
diff --git a/lib/openldap.c b/lib/openldap.c
index 4b8cfb9..f294403 100644
--- a/lib/openldap.c
+++ b/lib/openldap.c
@@ -5,7 +5,7 @@
  *                | (__| |_| |  _ <| |___
  *                 \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2010, Howard Chu, <hyc at openldap.org>
+ * Copyright (C) 2010, 2017, Howard Chu, <hyc at openldap.org>
  * Copyright (C) 2011 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
@@ -85,6 +85,7 @@ const struct Curl_handler Curl_handler_ldap = {
   ZERO_NULL,                            /* perform_getsock */
   ldap_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_LDAP,                            /* defport */
   CURLPROTO_LDAP,                       /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -110,6 +111,7 @@ const struct Curl_handler Curl_handler_ldaps = {
   ZERO_NULL,                            /* perform_getsock */
   ldap_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_LDAPS,                           /* defport */
   CURLPROTO_LDAP,                       /* protocol */
   PROTOPT_SSL                           /* flags */
@@ -150,7 +152,7 @@ static CURLcode ldap_setup_connection(struct connectdata *conn)
 {
   ldapconninfo *li;
   LDAPURLDesc *lud;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   int rc, proto;
   CURLcode status;
 
@@ -196,7 +198,7 @@ static CURLcode ldap_connect(struct connectdata *conn, bool *done)
   (void)done;
 
   strcpy(hosturl, "ldap");
-  ptr = hosturl+4;
+  ptr = hosturl + 4;
   if(conn->handler->flags & PROTOPT_SSL)
     *ptr++ = 's';
   snprintf(ptr, sizeof(hosturl)-(ptr-hosturl), "://%s:%d",
@@ -352,7 +354,7 @@ static CURLcode ldap_do(struct connectdata *conn, bool *done)
   int rc = 0;
   LDAPURLDesc *ludp = NULL;
   int msgid;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
 
   connkeep(conn, "OpenLDAP do");
 
@@ -517,7 +519,7 @@ static ssize_t ldap_recv(struct connectdata *conn, int sockindex, char *buf,
       else
         binary = 0;
 
-      for(i=0; bvals[i].bv_val != NULL; i++) {
+      for(i = 0; bvals[i].bv_val != NULL; i++) {
         int binval = 0;
         writeerr = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\t", 1);
         if(writeerr) {
@@ -547,7 +549,7 @@ static ssize_t ldap_recv(struct connectdata *conn, int sockindex, char *buf,
           else {
             /* check for unprintable characters */
             unsigned int j;
-            for(j=0; j<bvals[i].bv_len; j++)
+            for(j = 0; j<bvals[i].bv_len; j++)
               if(!ISPRINT(bvals[i].bv_val[j])) {
                 binval = 1;
                 break;
diff --git a/lib/parsedate.c b/lib/parsedate.c
index 3c783be..b82605b 100644
--- a/lib/parsedate.c
+++ b/lib/parsedate.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -167,20 +167,20 @@ static const struct tzinfo tz[]= {
      RFC 1123) had their signs wrong. Here we use the correct signs to match
      actual military usage.
    */
-  {"A",  +1 * 60},         /* Alpha */
-  {"B",  +2 * 60},         /* Bravo */
-  {"C",  +3 * 60},         /* Charlie */
-  {"D",  +4 * 60},         /* Delta */
-  {"E",  +5 * 60},         /* Echo */
-  {"F",  +6 * 60},         /* Foxtrot */
-  {"G",  +7 * 60},         /* Golf */
-  {"H",  +8 * 60},         /* Hotel */
-  {"I",  +9 * 60},         /* India */
+  {"A",  1 * 60},         /* Alpha */
+  {"B",  2 * 60},         /* Bravo */
+  {"C",  3 * 60},         /* Charlie */
+  {"D",  4 * 60},         /* Delta */
+  {"E",  5 * 60},         /* Echo */
+  {"F",  6 * 60},         /* Foxtrot */
+  {"G",  7 * 60},         /* Golf */
+  {"H",  8 * 60},         /* Hotel */
+  {"I",  9 * 60},         /* India */
   /* "J", Juliet is not used as a timezone, to indicate the observer's local
      time */
-  {"K", +10 * 60},         /* Kilo */
-  {"L", +11 * 60},         /* Lima */
-  {"M", +12 * 60},         /* Mike */
+  {"K", 10 * 60},         /* Kilo */
+  {"L", 11 * 60},         /* Lima */
+  {"M", 12 * 60},         /* Mike */
   {"N",  -1 * 60},         /* November */
   {"O",  -2 * 60},         /* Oscar */
   {"P",  -3 * 60},         /* Papa */
@@ -205,14 +205,14 @@ static int checkday(const char *check, size_t len)
 {
   int i;
   const char * const *what;
-  bool found= FALSE;
+  bool found = FALSE;
   if(len > 3)
     what = &weekday[0];
   else
     what = &Curl_wkday[0];
-  for(i=0; i<7; i++) {
+  for(i = 0; i<7; i++) {
     if(strcasecompare(check, what[0])) {
-      found=TRUE;
+      found = TRUE;
       break;
     }
     what++;
@@ -224,12 +224,12 @@ static int checkmonth(const char *check)
 {
   int i;
   const char * const *what;
-  bool found= FALSE;
+  bool found = FALSE;
 
   what = &Curl_month[0];
-  for(i=0; i<12; i++) {
+  for(i = 0; i<12; i++) {
     if(strcasecompare(check, what[0])) {
-      found=TRUE;
+      found = TRUE;
       break;
     }
     what++;
@@ -244,12 +244,12 @@ static int checktz(const char *check)
 {
   unsigned int i;
   const struct tzinfo *what;
-  bool found= FALSE;
+  bool found = FALSE;
 
   what = tz;
-  for(i=0; i< sizeof(tz)/sizeof(tz[0]); i++) {
+  for(i = 0; i< sizeof(tz)/sizeof(tz[0]); i++) {
     if(strcasecompare(check, what->name)) {
-      found=TRUE;
+      found = TRUE;
       break;
     }
     what++;
@@ -331,21 +331,21 @@ static time_t my_timegm(struct my_tm *tm)
 static int parsedate(const char *date, time_t *output)
 {
   time_t t = 0;
-  int wdaynum=-1;  /* day of the week number, 0-6 (mon-sun) */
-  int monnum=-1;   /* month of the year number, 0-11 */
-  int mdaynum=-1; /* day of month, 1 - 31 */
-  int hournum=-1;
-  int minnum=-1;
-  int secnum=-1;
-  int yearnum=-1;
-  int tzoff=-1;
+  int wdaynum = -1;  /* day of the week number, 0-6 (mon-sun) */
+  int monnum = -1;   /* month of the year number, 0-11 */
+  int mdaynum = -1; /* day of month, 1 - 31 */
+  int hournum = -1;
+  int minnum = -1;
+  int secnum = -1;
+  int yearnum = -1;
+  int tzoff = -1;
   struct my_tm tm;
   enum assume dignext = DATE_MDAY;
   const char *indate = date; /* save the original pointer */
   int part = 0; /* max 6 parts */
 
   while(*date && (part < 6)) {
-    bool found=FALSE;
+    bool found = FALSE;
 
     skip(&date);
 
@@ -386,7 +386,7 @@ static int parsedate(const char *date, time_t *output)
       /* a digit */
       int val;
       char *end;
-      int len=0;
+      int len = 0;
       if((secnum == -1) &&
          (3 == sscanf(date, "%02d:%02d:%02d%n",
                       &hournum, &minnum, &secnum, &len))) {
@@ -404,12 +404,12 @@ static int parsedate(const char *date, time_t *output)
         int error;
         int old_errno;
 
-        old_errno = ERRNO;
-        SET_ERRNO(0);
+        old_errno = errno;
+        errno = 0;
         lval = strtol(date, &end, 10);
-        error = ERRNO;
-        if(error != old_errno)
-          SET_ERRNO(old_errno);
+        error = errno;
+        if(errno != old_errno)
+          errno = old_errno;
 
         if(error)
           return PARSEDATE_FAIL;
diff --git a/lib/pingpong.c b/lib/pingpong.c
index 5ed79b7..b8f2140 100644
--- a/lib/pingpong.c
+++ b/lib/pingpong.c
@@ -47,10 +47,10 @@
 time_t Curl_pp_state_timeout(struct pingpong *pp)
 {
   struct connectdata *conn = pp->conn;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   time_t timeout_ms; /* in milliseconds */
   time_t timeout2_ms; /* in milliseconds */
-  long response_time= (data->set.server_response_timeout)?
+  long response_time = (data->set.server_response_timeout)?
     data->set.server_response_timeout: pp->response_time;
 
   /* if CURLOPT_SERVER_RESPONSE_TIMEOUT is set, use that to determine
@@ -85,10 +85,10 @@ CURLcode Curl_pp_statemach(struct pingpong *pp, bool block)
   int rc;
   time_t interval_ms;
   time_t timeout_ms = Curl_pp_state_timeout(pp);
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
   CURLcode result = CURLE_OK;
 
-  if(timeout_ms <=0) {
+  if(timeout_ms <= 0) {
     failf(data, "server response timeout");
     return CURLE_OPERATION_TIMEDOUT; /* already too little time */
   }
@@ -270,7 +270,7 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
                           size_t *size) /* size of the response */
 {
   ssize_t perline; /* count bytes per line */
-  bool keepon=TRUE;
+  bool keepon = TRUE;
   ssize_t gotbytes;
   char *ptr;
   struct connectdata *conn = pp->conn;
@@ -281,7 +281,7 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
   *code = 0; /* 0 for errors or not done */
   *size = 0;
 
-  ptr=buf + pp->nread_resp;
+  ptr = buf + pp->nread_resp;
 
   /* number of bytes in the current line, so far */
   perline = (ssize_t)(ptr-pp->linestart_resp);
@@ -297,7 +297,7 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
        * it would have been populated with something of size int to begin
        * with, even though its datatype may be larger than an int.
        */
-      DEBUGASSERT((ptr+pp->cache_size) <= (buf+data->set.buffer_size+1));
+      DEBUGASSERT((ptr + pp->cache_size) <= (buf + data->set.buffer_size + 1));
       memcpy(ptr, pp->cache, pp->cache_size);
       gotbytes = (ssize_t)pp->cache_size;
       free(pp->cache);    /* free the cache */
@@ -351,7 +351,7 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
       pp->nread_resp += gotbytes;
       for(i = 0; i < gotbytes; ptr++, i++) {
         perline++;
-        if(*ptr=='\n') {
+        if(*ptr == '\n') {
           /* a newline is CRLF in pp-talk, so the CR is ignored as
              the line isn't really terminated until the LF comes */
 
@@ -378,17 +378,17 @@ CURLcode Curl_pp_readresp(curl_socket_t sockfd,
                start of the buffer and zero terminate, for old times sake */
             size_t n = ptr - pp->linestart_resp;
             memmove(buf, pp->linestart_resp, n);
-            buf[n]=0; /* zero terminate */
-            keepon=FALSE;
-            pp->linestart_resp = ptr+1; /* advance pointer */
+            buf[n] = 0; /* zero terminate */
+            keepon = FALSE;
+            pp->linestart_resp = ptr + 1; /* advance pointer */
             i++; /* skip this before getting out */
 
             *size = pp->nread_resp; /* size of the response */
             pp->nread_resp = 0; /* restart */
             break;
           }
-          perline=0; /* line starts over here */
-          pp->linestart_resp = ptr+1;
+          perline = 0; /* line starts over here */
+          pp->linestart_resp = ptr + 1;
         }
       }
 
@@ -490,7 +490,7 @@ CURLcode Curl_pp_flushsend(struct pingpong *pp)
   }
   else {
     free(pp->sendthis);
-    pp->sendthis=NULL;
+    pp->sendthis = NULL;
     pp->sendleft = pp->sendsize = 0;
     pp->response = Curl_tvnow();
   }
diff --git a/lib/pingpong.h b/lib/pingpong.h
index ee1a59b..a2c8ff5 100644
--- a/lib/pingpong.h
+++ b/lib/pingpong.h
@@ -58,7 +58,7 @@ struct pingpong {
                      server */
   size_t sendleft; /* number of bytes left to send from the sendthis buffer */
   size_t sendsize; /* total size of the sendthis buffer */
-  struct timeval response; /* set to Curl_tvnow() when a command has been sent
+  struct curltime response; /* set to Curl_tvnow() when a command has been sent
                               off, used to time-out response reading */
   long response_time; /* When no timeout is given, this is the amount of
                          milliseconds we await for a server response. */
diff --git a/lib/pipeline.c b/lib/pipeline.c
index b8d2037..4d41b04 100644
--- a/lib/pipeline.c
+++ b/lib/pipeline.c
@@ -230,28 +230,27 @@ CURLMcode Curl_pipeline_set_site_blacklist(char **sites,
   return CURLM_OK;
 }
 
+struct blacklist_node {
+  struct curl_llist_element list;
+  char server_name[1];
+};
+
 bool Curl_pipeline_server_blacklisted(struct Curl_easy *handle,
                                       char *server_name)
 {
   if(handle->multi && server_name) {
-    struct curl_llist *blacklist =
+    struct curl_llist *list =
       Curl_multi_pipelining_server_bl(handle->multi);
 
-    if(blacklist) {
-      struct curl_llist_element *curr;
-
-      curr = blacklist->head;
-      while(curr) {
-        char *bl_server_name;
-
-        bl_server_name = curr->ptr;
-        if(strncasecompare(bl_server_name, server_name,
-                           strlen(bl_server_name))) {
-          infof(handle, "Server %s is blacklisted\n", server_name);
-          return TRUE;
-        }
-        curr = curr->next;
+    struct curl_llist_element *e = list->head;
+    while(e) {
+      struct blacklist_node *bl = (struct blacklist_node *)e;
+      if(strncasecompare(bl->server_name, server_name,
+                         strlen(bl->server_name))) {
+        infof(handle, "Server %s is blacklisted\n", server_name);
+        return TRUE;
       }
+      e = e->next;
     }
 
     DEBUGF(infof(handle, "Server %s is not blacklisted\n", server_name));
@@ -259,11 +258,6 @@ bool Curl_pipeline_server_blacklisted(struct Curl_easy *handle,
   return FALSE;
 }
 
-struct blacklist_node {
-  struct curl_llist_element list;
-  char server_name[1];
-};
-
 CURLMcode Curl_pipeline_set_server_blacklist(char **servers,
                                              struct curl_llist *list)
 {
@@ -286,8 +280,7 @@ CURLMcode Curl_pipeline_set_server_blacklist(char **servers,
       }
       strcpy(n->server_name, *servers);
 
-      Curl_llist_insert_next(list, list->tail, n->server_name,
-                             &n->list);
+      Curl_llist_insert_next(list, list->tail, n, &n->list);
       servers++;
     }
   }
diff --git a/lib/pop3.c b/lib/pop3.c
index 3feb3be..5792a4a 100644
--- a/lib/pop3.c
+++ b/lib/pop3.c
@@ -125,6 +125,7 @@ const struct Curl_handler Curl_handler_pop3 = {
   ZERO_NULL,                        /* perform_getsock */
   pop3_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_POP3,                        /* defport */
   CURLPROTO_POP3,                   /* protocol */
   PROTOPT_CLOSEACTION | PROTOPT_NOURLQUERY | /* flags */
@@ -151,6 +152,7 @@ const struct Curl_handler Curl_handler_pop3s = {
   ZERO_NULL,                        /* perform_getsock */
   pop3_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_POP3S,                       /* defport */
   CURLPROTO_POP3S,                  /* protocol */
   PROTOPT_CLOSEACTION | PROTOPT_SSL
@@ -158,58 +160,6 @@ const struct Curl_handler Curl_handler_pop3s = {
 };
 #endif
 
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed POP3 protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_pop3_proxy = {
-  "POP3",                               /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_POP3,                            /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed POP3S protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_pop3s_proxy = {
-  "POP3S",                              /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_POP3S,                           /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-#endif
-#endif
-
 /* SASL parameters for the pop3 protocol */
 static const struct SASLproto saslpop3 = {
   "pop",                      /* The service name */
@@ -1355,31 +1305,6 @@ static CURLcode pop3_setup_connection(struct connectdata *conn)
 
   /* Clear the TLS upgraded flag */
   conn->tls_upgraded = FALSE;
-
-  /* Set up the proxy if necessary */
-  if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
-    /* Unless we have asked to tunnel POP3 operations through the proxy, we
-       switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
-    if(conn->handler == &Curl_handler_pop3)
-      conn->handler = &Curl_handler_pop3_proxy;
-    else {
-#ifdef USE_SSL
-      conn->handler = &Curl_handler_pop3s_proxy;
-#else
-      failf(data, "POP3S not supported!");
-      return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-    }
-
-    /* set it up as an HTTP connection instead */
-    return conn->handler->setup_connection(conn);
-#else
-    failf(data, "POP3 over http proxy requires HTTP support built-in!");
-    return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-  }
-
   data->state.path++;   /* don't include the initial slash */
 
   return CURLE_OK;
diff --git a/lib/progress.c b/lib/progress.c
index cfaf404..00609d9 100644
--- a/lib/progress.c
+++ b/lib/progress.c
@@ -134,7 +134,7 @@ int Curl_pgrsDone(struct connectdata *conn)
 {
   int rc;
   struct Curl_easy *data = conn->data;
-  data->progress.lastshow=0;
+  data->progress.lastshow = 0;
   rc = Curl_pgrsUpdate(conn); /* the final (forced) update */
   if(rc)
     return rc;
@@ -149,21 +149,20 @@ int Curl_pgrsDone(struct connectdata *conn)
   return 0;
 }
 
-/* reset all times except redirect, and reset the known transfer sizes */
-void Curl_pgrsResetTimesSizes(struct Curl_easy *data)
+/* reset the known transfer sizes */
+void Curl_pgrsResetTransferSizes(struct Curl_easy *data)
 {
-  data->progress.t_nslookup = 0.0;
-  data->progress.t_connect = 0.0;
-  data->progress.t_pretransfer = 0.0;
-  data->progress.t_starttransfer = 0.0;
-
   Curl_pgrsSetDownloadSize(data, -1);
   Curl_pgrsSetUploadSize(data, -1);
 }
 
+/*
+ * @unittest: 1399
+ */
 void Curl_pgrsTime(struct Curl_easy *data, timerid timer)
 {
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
+  time_t *delta = NULL;
 
   switch(timer) {
   default:
@@ -177,45 +176,58 @@ void Curl_pgrsTime(struct Curl_easy *data, timerid timer)
   case TIMER_STARTSINGLE:
     /* This is set at the start of each single fetch */
     data->progress.t_startsingle = now;
+    data->progress.is_t_startransfer_set = false;
     break;
-
   case TIMER_STARTACCEPT:
-    data->progress.t_acceptdata = Curl_tvnow();
+    data->progress.t_acceptdata = now;
     break;
-
   case TIMER_NAMELOOKUP:
-    data->progress.t_nslookup =
-      Curl_tvdiff_secs(now, data->progress.t_startsingle);
+    delta = &data->progress.t_nslookup;
     break;
   case TIMER_CONNECT:
-    data->progress.t_connect =
-      Curl_tvdiff_secs(now, data->progress.t_startsingle);
+    delta = &data->progress.t_connect;
     break;
   case TIMER_APPCONNECT:
-    data->progress.t_appconnect =
-      Curl_tvdiff_secs(now, data->progress.t_startsingle);
+    delta = &data->progress.t_appconnect;
     break;
   case TIMER_PRETRANSFER:
-    data->progress.t_pretransfer =
-      Curl_tvdiff_secs(now, data->progress.t_startsingle);
+    delta = &data->progress.t_pretransfer;
     break;
   case TIMER_STARTTRANSFER:
-    data->progress.t_starttransfer =
-      Curl_tvdiff_secs(now, data->progress.t_startsingle);
-    break;
+    delta = &data->progress.t_starttransfer;
+    /* prevent updating t_starttransfer unless:
+     *   1) this is the first time we're setting t_starttransfer
+     *   2) a redirect has occurred since the last time t_starttransfer was set
+     * This prevents repeated invocations of the function from incorrectly
+     * changing the t_starttransfer time.
+     */
+    if(data->progress.is_t_startransfer_set) {
+      return;
+    }
+    else {
+      data->progress.is_t_startransfer_set = true;
+      break;
+    }
   case TIMER_POSTRANSFER:
     /* this is the normal end-of-transfer thing */
     break;
   case TIMER_REDIRECT:
-    data->progress.t_redirect = Curl_tvdiff_secs(now, data->progress.start);
+    data->progress.t_redirect = Curl_tvdiff_us(now, data->progress.start);
     break;
   }
+  if(delta) {
+    time_t us = Curl_tvdiff_us(now, data->progress.t_startsingle);
+    if(!us)
+      us++; /* make sure at least one microsecond passed */
+    *delta += us;
+  }
 }
 
 void Curl_pgrsStartNow(struct Curl_easy *data)
 {
   data->progress.speeder_c = 0; /* reset the progress meter display */
   data->progress.start = Curl_tvnow();
+  data->progress.is_t_startransfer_set = false;
   data->progress.ul_limit_start.tv_sec = 0;
   data->progress.ul_limit_start.tv_usec = 0;
   data->progress.dl_limit_start.tv_sec = 0;
@@ -246,8 +258,8 @@ void Curl_pgrsStartNow(struct Curl_easy *data)
 long Curl_pgrsLimitWaitTime(curl_off_t cursize,
                             curl_off_t startsize,
                             curl_off_t limit,
-                            struct timeval start,
-                            struct timeval now)
+                            struct curltime start,
+                            struct curltime now)
 {
   curl_off_t size = cursize - startsize;
   time_t minimum;
@@ -273,7 +285,7 @@ long Curl_pgrsLimitWaitTime(curl_off_t cursize,
 
 void Curl_pgrsSetDownloadCounter(struct Curl_easy *data, curl_off_t size)
 {
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
 
   data->progress.downloaded = size;
 
@@ -291,7 +303,7 @@ void Curl_pgrsSetDownloadCounter(struct Curl_easy *data, curl_off_t size)
 
 void Curl_pgrsSetUploadCounter(struct Curl_easy *data, curl_off_t size)
 {
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
 
   data->progress.uploaded = size;
 
@@ -337,12 +349,12 @@ void Curl_pgrsSetUploadSize(struct Curl_easy *data, curl_off_t size)
  */
 int Curl_pgrsUpdate(struct connectdata *conn)
 {
-  struct timeval now;
+  struct curltime now;
   int result;
   char max5[6][10];
-  curl_off_t dlpercen=0;
-  curl_off_t ulpercen=0;
-  curl_off_t total_percen=0;
+  curl_off_t dlpercen = 0;
+  curl_off_t ulpercen = 0;
+  curl_off_t total_percen = 0;
   curl_off_t total_transfer;
   curl_off_t total_expected_transfer;
   curl_off_t timespent;
@@ -353,26 +365,26 @@ int Curl_pgrsUpdate(struct connectdata *conn)
   char time_left[10];
   char time_total[10];
   char time_spent[10];
-  curl_off_t ulestimate=0;
-  curl_off_t dlestimate=0;
+  curl_off_t ulestimate = 0;
+  curl_off_t dlestimate = 0;
   curl_off_t total_estimate;
-  bool shownow=FALSE;
+  bool shownow = FALSE;
 
   now = Curl_tvnow(); /* what time is it */
 
   /* The time spent so far (from the start) */
-  data->progress.timespent = curlx_tvdiff_secs(now, data->progress.start);
-  timespent = (curl_off_t)data->progress.timespent;
+  data->progress.timespent = Curl_tvdiff_us(now, data->progress.start);
+  timespent = (curl_off_t)data->progress.timespent/1000000; /* seconds */
 
   /* The average download speed this far */
   data->progress.dlspeed = (curl_off_t)
-    ((double)data->progress.downloaded/
-     (data->progress.timespent>0?data->progress.timespent:1));
+    (data->progress.downloaded/
+     (timespent>0?timespent:1));
 
   /* The average upload speed this far */
   data->progress.ulspeed = (curl_off_t)
-    ((double)data->progress.uploaded/
-     (data->progress.timespent>0?data->progress.timespent:1));
+    (data->progress.uploaded/
+     (timespent>0?timespent:1));
 
   /* Calculations done at most once a second, unless end is reached */
   if(data->progress.lastshow != now.tv_sec) {
@@ -380,11 +392,10 @@ int Curl_pgrsUpdate(struct connectdata *conn)
 
     data->progress.lastshow = now.tv_sec;
 
-    /* Let's do the "current speed" thing, which should use the fastest
-       of the dl/ul speeds. Store the faster speed at entry 'nowindex'. */
+    /* Let's do the "current speed" thing, with the dl + ul speeds
+       combined. Store the speed at entry 'nowindex'. */
     data->progress.speeder[ nowindex ] =
-      data->progress.downloaded>data->progress.uploaded?
-      data->progress.downloaded:data->progress.uploaded;
+      data->progress.downloaded + data->progress.uploaded;
 
     /* remember the exact time for this moment */
     data->progress.speeder_time [ nowindex ] = now;
@@ -397,7 +408,7 @@ int Curl_pgrsUpdate(struct connectdata *conn)
        array. With N_ENTRIES filled in, we have about N_ENTRIES-1 seconds of
        transfer. Imagine, after one second we have filled in two entries,
        after two seconds we've filled in three entries etc. */
-    countindex = ((data->progress.speeder_c>=CURR_TIME)?
+    countindex = ((data->progress.speeder_c >= CURR_TIME)?
                   CURR_TIME:data->progress.speeder_c) - 1;
 
     /* first of all, we don't do this if there's no counted seconds yet */
@@ -407,14 +418,14 @@ int Curl_pgrsUpdate(struct connectdata *conn)
       /* Get the index position to compare with the 'nowindex' position.
          Get the oldest entry possible. While we have less than CURR_TIME
          entries, the first entry will remain the oldest. */
-      checkindex = (data->progress.speeder_c>=CURR_TIME)?
+      checkindex = (data->progress.speeder_c >= CURR_TIME)?
         data->progress.speeder_c%CURR_TIME:0;
 
       /* Figure out the exact time for the time span */
       span_ms = Curl_tvdiff(now,
                             data->progress.speeder_time[checkindex]);
       if(0 == span_ms)
-        span_ms=1; /* at least one millisecond MUST have passed */
+        span_ms = 1; /* at least one millisecond MUST have passed */
 
       /* Calculate the average speed the last 'span_ms' milliseconds */
       {
@@ -433,10 +444,9 @@ int Curl_pgrsUpdate(struct connectdata *conn)
       }
     }
     else
-      /* the first second we use the main average */
+      /* the first second we use the average */
       data->progress.current_speed =
-        (data->progress.ulspeed>data->progress.dlspeed)?
-        data->progress.ulspeed:data->progress.dlspeed;
+        data->progress.ulspeed + data->progress.dlspeed;
 
   } /* Calculations end */
 
@@ -445,22 +455,22 @@ int Curl_pgrsUpdate(struct connectdata *conn)
 
     if(data->set.fxferinfo) {
       /* There's a callback set, call that */
-      result= data->set.fxferinfo(data->set.progress_client,
-                                  data->progress.size_dl,
-                                  data->progress.downloaded,
-                                  data->progress.size_ul,
-                                  data->progress.uploaded);
+      result = data->set.fxferinfo(data->set.progress_client,
+                                   data->progress.size_dl,
+                                   data->progress.downloaded,
+                                   data->progress.size_ul,
+                                   data->progress.uploaded);
       if(result)
         failf(data, "Callback aborted");
       return result;
     }
     if(data->set.fprogress) {
       /* The older deprecated callback is set, call that */
-      result= data->set.fprogress(data->set.progress_client,
-                                  (double)data->progress.size_dl,
-                                  (double)data->progress.downloaded,
-                                  (double)data->progress.size_ul,
-                                  (double)data->progress.uploaded);
+      result = data->set.fprogress(data->set.progress_client,
+                                   (double)data->progress.size_dl,
+                                   (double)data->progress.downloaded,
+                                   (double)data->progress.size_ul,
+                                   (double)data->progress.uploaded);
       if(result)
         failf(data, "Callback aborted");
       return result;
diff --git a/lib/progress.h b/lib/progress.h
index 155ff04..9333ab2 100644
--- a/lib/progress.h
+++ b/lib/progress.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -47,13 +47,13 @@ void Curl_pgrsSetUploadSize(struct Curl_easy *data, curl_off_t size);
 void Curl_pgrsSetDownloadCounter(struct Curl_easy *data, curl_off_t size);
 void Curl_pgrsSetUploadCounter(struct Curl_easy *data, curl_off_t size);
 int Curl_pgrsUpdate(struct connectdata *);
-void Curl_pgrsResetTimesSizes(struct Curl_easy *data);
+void Curl_pgrsResetTransferSizes(struct Curl_easy *data);
 void Curl_pgrsTime(struct Curl_easy *data, timerid timer);
 long Curl_pgrsLimitWaitTime(curl_off_t cursize,
                             curl_off_t startsize,
                             curl_off_t limit,
-                            struct timeval start,
-                            struct timeval now);
+                            struct curltime start,
+                            struct curltime now);
 
 /* Don't show progress for sizes smaller than: */
 #define LEAST_SIZE_PROGRESS BUFSIZE
diff --git a/lib/rand.c b/lib/rand.c
index b6f40ac..2713a0a 100644
--- a/lib/rand.c
+++ b/lib/rand.c
@@ -86,7 +86,7 @@ static CURLcode randit(struct Curl_easy *data, unsigned int *rnd)
 #endif
 
   if(!seeded) {
-    struct timeval now = curlx_tvnow();
+    struct curltime now = curlx_tvnow();
     infof(data, "WARNING: Using weak random seed\n");
     randseed += (unsigned int)now.tv_usec + (unsigned int)now.tv_sec;
     randseed = randseed * 1103515245 + 12345;
diff --git a/lib/rtsp.c b/lib/rtsp.c
index 1810cda..925da2c 100644
--- a/lib/rtsp.c
+++ b/lib/rtsp.c
@@ -81,6 +81,9 @@ static CURLcode rtsp_rtp_readwrite(struct Curl_easy *data,
 
 static CURLcode rtsp_setup_connection(struct connectdata *conn);
 
+bool rtsp_connisdead(struct connectdata *check);
+static unsigned int rtsp_conncheck(struct connectdata *check,
+                                   unsigned int checks_to_perform);
 
 /* this returns the socket to wait for in the DO and DOING state for the multi
    interface and then we're always _sending_ a request and thus we wait for
@@ -117,6 +120,7 @@ const struct Curl_handler Curl_handler_rtsp = {
   ZERO_NULL,                            /* perform_getsock */
   rtsp_disconnect,                      /* disconnect */
   rtsp_rtp_readwrite,                   /* readwrite */
+  rtsp_conncheck,                       /* connection_check */
   PORT_RTSP,                            /* defport */
   CURLPROTO_RTSP,                       /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -143,7 +147,7 @@ static CURLcode rtsp_setup_connection(struct connectdata *conn)
  * Instead, if it is readable, run Curl_connalive() to peek at the socket
  * and distinguish between closed and data.
  */
-bool Curl_rtsp_connisdead(struct connectdata *check)
+bool rtsp_connisdead(struct connectdata *check)
 {
   int sval;
   bool ret_val = TRUE;
@@ -165,6 +169,23 @@ bool Curl_rtsp_connisdead(struct connectdata *check)
   return ret_val;
 }
 
+/*
+ * Function to check on various aspects of a connection.
+ */
+static unsigned int rtsp_conncheck(struct connectdata *check,
+                                   unsigned int checks_to_perform)
+{
+  unsigned int ret_val = CONNRESULT_NONE;
+
+  if(checks_to_perform & CONNCHECK_ISDEAD) {
+    if(rtsp_connisdead(check))
+      ret_val |= CONNRESULT_DEAD;
+  }
+
+  return ret_val;
+}
+
+
 static CURLcode rtsp_connect(struct connectdata *conn, bool *done)
 {
   CURLcode httpStatus;
@@ -229,7 +250,7 @@ static CURLcode rtsp_done(struct connectdata *conn,
 static CURLcode rtsp_do(struct connectdata *conn, bool *done)
 {
   struct Curl_easy *data = conn->data;
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
   Curl_RtspReq rtspreq = data->set.rtspreq;
   struct RTSP *rtsp = data->req.protop;
   struct HTTP *http;
@@ -728,14 +749,28 @@ CURLcode rtp_client_write(struct connectdata *conn, char *ptr, size_t len)
   struct Curl_easy *data = conn->data;
   size_t wrote;
   curl_write_callback writeit;
+  void *user_ptr;
 
   if(len == 0) {
     failf(data, "Cannot write a 0 size RTP packet.");
     return CURLE_WRITE_ERROR;
   }
 
-  writeit = data->set.fwrite_rtp?data->set.fwrite_rtp:data->set.fwrite_func;
-  wrote = writeit(ptr, 1, len, data->set.rtp_out);
+  /* If the user has configured CURLOPT_INTERLEAVEFUNCTION then use that
+     function and any configured CURLOPT_INTERLEAVEDATA to write out the RTP
+     data. Otherwise, use the CURLOPT_WRITEFUNCTION with the CURLOPT_WRITEDATA
+     pointer to write out the RTP data. */
+  if(data->set.fwrite_rtp) {
+    writeit = data->set.fwrite_rtp;
+    user_ptr = data->set.rtp_out;
+  }
+  else
+  {
+    writeit = data->set.fwrite_func;
+    user_ptr = data->set.out;
+  }
+
+  wrote = writeit(ptr, 1, len, user_ptr);
 
   if(CURL_WRITEFUNC_PAUSE == wrote) {
     failf(data, "Cannot pause RTP");
diff --git a/lib/rtsp.h b/lib/rtsp.h
index 5a8d555..8375a53 100644
--- a/lib/rtsp.h
+++ b/lib/rtsp.h
@@ -25,13 +25,11 @@
 
 extern const struct Curl_handler Curl_handler_rtsp;
 
-bool Curl_rtsp_connisdead(struct connectdata *check);
 CURLcode Curl_rtsp_parseheader(struct connectdata *conn, char *header);
 
 #else
 /* disabled */
 #define Curl_rtsp_parseheader(x,y) CURLE_NOT_BUILT_IN
-#define Curl_rtsp_connisdead(x) TRUE
 
 #endif /* CURL_DISABLE_RTSP */
 
diff --git a/lib/security.c b/lib/security.c
index f4a8763..a2e4a35 100644
--- a/lib/security.c
+++ b/lib/security.c
@@ -7,7 +7,7 @@
  * rewrite to work around the paragraph 2 in the BSD licenses as explained
  * below.
  *
- * Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan
+ * Copyright (c) 1998, 1999, 2017 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  *
  * Copyright (C) 2001 - 2015, Daniel Stenberg, <daniel at haxx.se>, et al.
@@ -115,7 +115,7 @@ static char level_to_char(int level)
 static int ftp_send_command(struct connectdata *conn, const char *message, ...)
 {
   int ftp_code;
-  ssize_t nread=0;
+  ssize_t nread = 0;
   va_list args;
   char print_buffer[50];
 
diff --git a/lib/select.c b/lib/select.c
index f49314b..f6fecaf 100644
--- a/lib/select.c
+++ b/lib/select.c
@@ -78,7 +78,7 @@ int Curl_wait_ms(int timeout_ms)
 #ifndef HAVE_POLL_FINE
   struct timeval pending_tv;
 #endif
-  struct timeval initial_tv;
+  struct curltime initial_tv;
   int pending_ms;
   int error;
 #endif
@@ -158,7 +158,7 @@ int Curl_socket_check(curl_socket_t readfd0, /* two sockets to read from */
   fd_set fds_err;
   curl_socket_t maxfd;
 #endif
-  struct timeval initial_tv = {0, 0};
+  struct curltime initial_tv = {0, 0};
   int pending_ms = 0;
   int error;
   int r;
@@ -398,7 +398,7 @@ int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms)
   fd_set fds_err;
   curl_socket_t maxfd;
 #endif
-  struct timeval initial_tv = {0, 0};
+  struct curltime initial_tv = {0, 0};
   bool fds_none = TRUE;
   unsigned int i;
   int pending_ms = 0;
@@ -571,8 +571,8 @@ int Curl_poll(struct pollfd ufds[], unsigned int nfds, int timeout_ms)
  *
  * Return values are the same as select's.
  */
-int tpf_select_libcurl(int maxfds, fd_set* reads, fd_set* writes,
-                       fd_set* excepts, struct timeval* tv)
+int tpf_select_libcurl(int maxfds, fd_set *reads, fd_set *writes,
+                       fd_set *excepts, struct timeval *tv)
 {
    int rc;
 
diff --git a/lib/select.h b/lib/select.h
index 4ed5dd2..4351786 100644
--- a/lib/select.h
+++ b/lib/select.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -36,7 +36,8 @@
 
 #if !defined(HAVE_STRUCT_POLLFD) && \
     !defined(HAVE_SYS_POLL_H) && \
-    !defined(HAVE_POLL_H)
+    !defined(HAVE_POLL_H) && \
+    !defined(POLLIN)
 
 #define POLLIN      0x01
 #define POLLPRI     0x02
diff --git a/lib/sendf.c b/lib/sendf.c
index 595c361..7564cb3 100644
--- a/lib/sendf.c
+++ b/lib/sendf.c
@@ -63,7 +63,7 @@ static size_t convert_lineends(struct Curl_easy *data,
     if(*startPtr == '\n') {
       /* This block of incoming data starts with the
          previous block's LF so get rid of it */
-      memmove(startPtr, startPtr+1, size-1);
+      memmove(startPtr, startPtr + 1, size-1);
       size--;
       /* and it wasn't a bare CR but a CRLF conversion instead */
       data->state.crlf_conversions++;
@@ -75,7 +75,7 @@ static size_t convert_lineends(struct Curl_easy *data,
   inPtr = outPtr = memchr(startPtr, '\r', size);
   if(inPtr) {
     /* at least one CR, now look for CRLF */
-    while(inPtr < (startPtr+size-1)) {
+    while(inPtr < (startPtr + size-1)) {
       /* note that it's size-1, so we'll never look past the last byte */
       if(memcmp(inPtr, "\r\n", 2) == 0) {
         /* CRLF found, bump past the CR and copy the NL */
@@ -98,7 +98,7 @@ static size_t convert_lineends(struct Curl_easy *data,
       inPtr++;
     } /* end of while loop */
 
-    if(inPtr < startPtr+size) {
+    if(inPtr < startPtr + size) {
       /* handle last byte */
       if(*inPtr == '\r') {
         /* deal with a CR at the end of the buffer */
@@ -112,7 +112,7 @@ static size_t convert_lineends(struct Curl_easy *data,
       }
       outPtr++;
     }
-    if(outPtr < startPtr+size)
+    if(outPtr < startPtr + size)
       /* tidy up by null terminating the now shorter data */
       *outPtr = '\0';
 
@@ -279,7 +279,7 @@ CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *conn,
   if(!s)
     return CURLE_OUT_OF_MEMORY; /* failure */
 
-  bytes_written=0;
+  bytes_written = 0;
   write_len = strlen(s);
   sptr = s;
 
@@ -387,7 +387,7 @@ ssize_t Curl_send_plain(struct connectdata *conn, int num,
 #endif
       ) {
       /* this is just a case of EWOULDBLOCK */
-      bytes_written=0;
+      bytes_written = 0;
       *code = CURLE_AGAIN;
     }
     else {
@@ -480,7 +480,7 @@ static CURLcode pausewrite(struct Curl_easy *data,
   bool newtype = TRUE;
 
   if(s->tempcount) {
-    for(i=0; i< s->tempcount; i++) {
+    for(i = 0; i< s->tempcount; i++) {
       if(s->tempwrite[i].type == type) {
         /* data for this type exists */
         newtype = FALSE;
@@ -704,7 +704,7 @@ CURLcode Curl_read(struct connectdata *conn, /* connection data */
      us use the correct ssl handle. */
   int num = (sockfd == conn->sock[SECONDARYSOCKET]);
 
-  *n=0; /* reset amount to zero */
+  *n = 0; /* reset amount to zero */
 
   /* If session can pipeline, check connection buffer  */
   if(pipelining) {
@@ -823,8 +823,8 @@ int Curl_debug(struct Curl_easy *data, curl_infotype type,
   int rc;
   if(data->set.printhost && conn && conn->host.dispname) {
     char buffer[160];
-    const char *t=NULL;
-    const char *w="Data";
+    const char *t = NULL;
+    const char *w = "Data";
     switch(type) {
     case CURLINFO_HEADER_IN:
       w = "Header";
diff --git a/lib/smb.c b/lib/smb.c
index 5b1ffa9..13dfd51 100644
--- a/lib/smb.c
+++ b/lib/smb.c
@@ -34,7 +34,7 @@
 #include <process.h>
 #ifdef CURL_WINDOWS_APP
 #define getpid GetCurrentProcessId
-#else
+#elif !defined(MSDOS)
 #define getpid _getpid
 #endif
 #endif
@@ -85,6 +85,7 @@ const struct Curl_handler Curl_handler_smb = {
   ZERO_NULL,                            /* perform_getsock */
   smb_disconnect,                       /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_SMB,                             /* defport */
   CURLPROTO_SMB,                        /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -109,6 +110,7 @@ const struct Curl_handler Curl_handler_smbs = {
   ZERO_NULL,                            /* perform_getsock */
   smb_disconnect,                       /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_SMBS,                            /* defport */
   CURLPROTO_SMBS,                       /* protocol */
   PROTOPT_SSL                           /* flags */
@@ -713,6 +715,23 @@ static CURLcode smb_connection_state(struct connectdata *conn, bool *done)
   return CURLE_OK;
 }
 
+/*
+ * Convert a timestamp from the Windows world (100 nsec units from
+ * 1 Jan 1601) to Posix time.
+ */
+static void get_posix_time(long *_out, const void *_in)
+{
+#ifdef HAVE_LONGLONG
+  long long timestamp = *(long long *) _in;
+#else
+  unsigned __int64 timestamp = *(unsigned __int64 *) _in;
+#endif
+
+  timestamp -= 116444736000000000ULL;
+  timestamp /= 10000000;
+  *_out = (long) timestamp;
+}
+
 static CURLcode smb_request_state(struct connectdata *conn, bool *done)
 {
   struct smb_request *req = conn->data->req.protop;
@@ -723,6 +742,7 @@ static CURLcode smb_request_state(struct connectdata *conn, bool *done)
   unsigned short off;
   CURLcode result;
   void *msg = NULL;
+  const struct smb_nt_create_response *smb_m;
 
   /* Start the request */
   if(req->state == SMB_REQUESTING) {
@@ -765,7 +785,8 @@ static CURLcode smb_request_state(struct connectdata *conn, bool *done)
       next_state = SMB_TREE_DISCONNECT;
       break;
     }
-    req->fid = smb_swap16(((struct smb_nt_create_response *)msg)->fid);
+    smb_m = (const struct smb_nt_create_response*) msg;
+    req->fid = smb_swap16(smb_m->fid);
     conn->data->req.offset = 0;
     if(conn->data->set.upload) {
       conn->data->req.size = conn->data->state.infilesize;
@@ -773,9 +794,11 @@ static CURLcode smb_request_state(struct connectdata *conn, bool *done)
       next_state = SMB_UPLOAD;
     }
     else {
-      conn->data->req.size =
-        smb_swap64(((struct smb_nt_create_response *)msg)->end_of_file);
+      smb_m = (const struct smb_nt_create_response*) msg;
+      conn->data->req.size = smb_swap64(smb_m->end_of_file);
       Curl_pgrsSetDownloadSize(conn->data, conn->data->req.size);
+      if(conn->data->set.get_filetime)
+        get_posix_time(&conn->data->info.filetime, &smb_m->last_change_time);
       next_state = SMB_DOWNLOAD;
     }
     break;
diff --git a/lib/smtp.c b/lib/smtp.c
index fe064cb..de2dd33 100644
--- a/lib/smtp.c
+++ b/lib/smtp.c
@@ -67,6 +67,7 @@
 #include "transfer.h"
 #include "escape.h"
 #include "http.h" /* for HTTP proxy tunnel stuff */
+#include "mime.h"
 #include "socks.h"
 #include "smtp.h"
 #include "strtoofft.h"
@@ -124,6 +125,7 @@ const struct Curl_handler Curl_handler_smtp = {
   ZERO_NULL,                        /* perform_getsock */
   smtp_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_SMTP,                        /* defport */
   CURLPROTO_SMTP,                   /* protocol */
   PROTOPT_CLOSEACTION | PROTOPT_NOURLQUERY | /* flags */
@@ -150,6 +152,7 @@ const struct Curl_handler Curl_handler_smtps = {
   ZERO_NULL,                        /* perform_getsock */
   smtp_disconnect,                  /* disconnect */
   ZERO_NULL,                        /* readwrite */
+  ZERO_NULL,                        /* connection_check */
   PORT_SMTPS,                       /* defport */
   CURLPROTO_SMTPS,                  /* protocol */
   PROTOPT_CLOSEACTION | PROTOPT_SSL
@@ -157,58 +160,6 @@ const struct Curl_handler Curl_handler_smtps = {
 };
 #endif
 
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed SMTP protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_smtp_proxy = {
-  "SMTP",                               /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_SMTP,                            /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed SMTPS protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_smtps_proxy = {
-  "SMTPS",                              /* scheme */
-  Curl_http_setup_conn,                 /* setup_connection */
-  Curl_http,                            /* do_it */
-  Curl_http_done,                       /* done */
-  ZERO_NULL,                            /* do_more */
-  ZERO_NULL,                            /* connect_it */
-  ZERO_NULL,                            /* connecting */
-  ZERO_NULL,                            /* doing */
-  ZERO_NULL,                            /* proto_getsock */
-  ZERO_NULL,                            /* doing_getsock */
-  ZERO_NULL,                            /* domore_getsock */
-  ZERO_NULL,                            /* perform_getsock */
-  ZERO_NULL,                            /* disconnect */
-  ZERO_NULL,                            /* readwrite */
-  PORT_SMTPS,                           /* defport */
-  CURLPROTO_HTTP,                       /* protocol */
-  PROTOPT_NONE                          /* flags */
-};
-#endif
-#endif
-
 /* SASL parameters for the smtp protocol */
 static const struct SASLproto saslsmtp = {
   "smtp",                     /* The service name */
@@ -580,8 +531,40 @@ static CURLcode smtp_perform_mail(struct connectdata *conn)
     }
   }
 
+  /* Prepare the mime data if some. */
+  if(data->set.mimepost.kind != MIMEKIND_NONE) {
+    /* Use the whole structure as data. */
+    data->set.mimepost.flags &= ~MIME_BODY_ONLY;
+
+    /* Add external headers and mime version. */
+    curl_mime_headers(&data->set.mimepost, data->set.headers, 0);
+    result = Curl_mime_prepare_headers(&data->set.mimepost, NULL,
+                                       NULL, MIMESTRATEGY_MAIL);
+
+    if(!result)
+      if(!Curl_checkheaders(conn, "Mime-Version"))
+        result = Curl_mime_add_header(&data->set.mimepost.curlheaders,
+                                      "Mime-Version: 1.0");
+
+    /* Make sure we will read the entire mime structure. */
+    if(!result)
+      result = Curl_mime_rewind(&data->set.mimepost);
+
+    if(result) {
+      free(from);
+      free(auth);
+      return result;
+    }
+
+    data->state.infilesize = Curl_mime_size(&data->set.mimepost);
+
+    /* Read from mime structure. */
+    data->state.fread_func = (curl_read_callback) Curl_mime_read;
+    data->state.in = (void *) &data->set.mimepost;
+  }
+
   /* Calculate the optional SIZE parameter */
-  if(conn->proto.smtpc.size_supported && conn->data->state.infilesize > 0) {
+  if(conn->proto.smtpc.size_supported && data->state.infilesize > 0) {
     size = aprintf("%" CURL_FORMAT_CURL_OFF_T, data->state.infilesize);
 
     if(!size) {
@@ -1209,7 +1192,8 @@ static CURLcode smtp_done(struct connectdata *conn, CURLcode status,
     connclose(conn, "SMTP done with bad status"); /* marked for closure */
     result = status;         /* use the already set error code */
   }
-  else if(!data->set.connect_only && data->set.upload && data->set.mail_rcpt) {
+  else if(!data->set.connect_only && data->set.mail_rcpt &&
+          (data->set.upload || data->set.mimepost.kind)) {
     /* Calculate the EOB taking into account any terminating CRLF from the
        previous line of the email or the CRLF of the DATA command when there
        is "no mail data". RFC-5321, sect. 4.1.1.4.
@@ -1299,7 +1283,7 @@ static CURLcode smtp_perform(struct connectdata *conn, bool *connected,
   smtp->rcpt = data->set.mail_rcpt;
 
   /* Start the first command in the DO phase */
-  if(data->set.upload && data->set.mail_rcpt)
+  if((data->set.upload || data->set.mimepost.kind) && data->set.mail_rcpt)
     /* MAIL transfer */
     result = smtp_perform_mail(conn);
   else
@@ -1451,30 +1435,6 @@ static CURLcode smtp_setup_connection(struct connectdata *conn)
   /* Clear the TLS upgraded flag */
   conn->tls_upgraded = FALSE;
 
-  /* Set up the proxy if necessary */
-  if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
-    /* Unless we have asked to tunnel SMTP operations through the proxy, we
-       switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
-    if(conn->handler == &Curl_handler_smtp)
-      conn->handler = &Curl_handler_smtp_proxy;
-    else {
-#ifdef USE_SSL
-      conn->handler = &Curl_handler_smtps_proxy;
-#else
-      failf(data, "SMTPS not supported!");
-      return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-    }
-    /* set it up as a HTTP connection instead */
-    return conn->handler->setup_connection(conn);
-
-#else
-    failf(data, "SMTP over http proxy requires HTTP support built-in!");
-    return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
-  }
-
   /* Initialise the SMTP layer */
   result = smtp_init(conn);
   if(result)
diff --git a/lib/socks.c b/lib/socks.c
index 97a44b2..e64cb98 100644
--- a/lib/socks.c
+++ b/lib/socks.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -105,7 +105,7 @@ int Curl_blockread_all(struct connectdata *conn, /* connection data */
 *   Set protocol4a=true for  "SOCKS 4A (Simple Extension to SOCKS 4 Protocol)"
 *   Nonsupport "Identification Protocol (RFC1413)"
 */
-CURLcode Curl_SOCKS4(const char *proxy_name,
+CURLcode Curl_SOCKS4(const char *proxy_user,
                      const char *hostname,
                      int remote_port,
                      int sockindex,
@@ -154,7 +154,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
   /* DNS resolve only for SOCKS4, not SOCKS4a */
   if(!protocol4a) {
     struct Curl_dns_entry *dns;
-    Curl_addrinfo *hp=NULL;
+    Curl_addrinfo *hp = NULL;
     int rc;
 
     rc = Curl_resolv(conn, hostname, remote_port, &dns);
@@ -171,7 +171,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
      * returns a Curl_addrinfo pointer that may not always look the same.
      */
     if(dns)
-      hp=dns->addr;
+      hp = dns->addr;
     if(hp) {
       char buf[64];
       Curl_printable_address(hp, buf, sizeof(buf));
@@ -206,14 +206,14 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
    * This is currently not supporting "Identification Protocol (RFC1413)".
    */
   socksreq[8] = 0; /* ensure empty userid is NUL-terminated */
-  if(proxy_name) {
-    size_t plen = strlen(proxy_name);
+  if(proxy_user) {
+    size_t plen = strlen(proxy_user);
     if(plen >= sizeof(socksreq) - 8) {
       failf(data, "Too long SOCKS proxy name, can't use!\n");
       return CURLE_COULDNT_CONNECT;
     }
     /* copy the proxy name WITH trailing zero */
-    memcpy(socksreq + 8, proxy_name, plen+1);
+    memcpy(socksreq + 8, proxy_user, plen + 1);
   }
 
   /*
@@ -306,7 +306,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
             ", request rejected or failed.",
             (unsigned char)socksreq[4], (unsigned char)socksreq[5],
             (unsigned char)socksreq[6], (unsigned char)socksreq[7],
-            (((unsigned char)socksreq[8] << 8) | (unsigned char)socksreq[9]),
+            (((unsigned char)socksreq[2] << 8) | (unsigned char)socksreq[3]),
             (unsigned char)socksreq[1]);
       return CURLE_COULDNT_CONNECT;
     case 92:
@@ -316,7 +316,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
             "identd on the client.",
             (unsigned char)socksreq[4], (unsigned char)socksreq[5],
             (unsigned char)socksreq[6], (unsigned char)socksreq[7],
-            (((unsigned char)socksreq[8] << 8) | (unsigned char)socksreq[9]),
+            (((unsigned char)socksreq[2] << 8) | (unsigned char)socksreq[3]),
             (unsigned char)socksreq[1]);
       return CURLE_COULDNT_CONNECT;
     case 93:
@@ -326,7 +326,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
             "report different user-ids.",
             (unsigned char)socksreq[4], (unsigned char)socksreq[5],
             (unsigned char)socksreq[6], (unsigned char)socksreq[7],
-            (((unsigned char)socksreq[8] << 8) | (unsigned char)socksreq[9]),
+            (((unsigned char)socksreq[2] << 8) | (unsigned char)socksreq[3]),
             (unsigned char)socksreq[1]);
       return CURLE_COULDNT_CONNECT;
     default:
@@ -335,7 +335,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
             ", Unknown.",
             (unsigned char)socksreq[4], (unsigned char)socksreq[5],
             (unsigned char)socksreq[6], (unsigned char)socksreq[7],
-            (((unsigned char)socksreq[8] << 8) | (unsigned char)socksreq[9]),
+            (((unsigned char)socksreq[2] << 8) | (unsigned char)socksreq[3]),
             (unsigned char)socksreq[1]);
       return CURLE_COULDNT_CONNECT;
     }
@@ -350,7 +350,7 @@ CURLcode Curl_SOCKS4(const char *proxy_name,
  * This function logs in to a SOCKS5 proxy and sends the specifics to the final
  * destination server.
  */
-CURLcode Curl_SOCKS5(const char *proxy_name,
+CURLcode Curl_SOCKS5(const char *proxy_user,
                      const char *proxy_password,
                      const char *hostname,
                      int remote_port,
@@ -375,6 +375,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
   */
 
   unsigned char socksreq[600]; /* room for large user/pw (255 max each) */
+  int idx;
   ssize_t actualread;
   ssize_t written;
   int result;
@@ -386,6 +387,8 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
     (conn->socks_proxy.proxytype == CURLPROXY_SOCKS5) ? TRUE : FALSE;
   const size_t hostname_len = strlen(hostname);
   ssize_t len = 0;
+  const unsigned long auth = data->set.socks5auth;
+  bool allow_gssapi = FALSE;
 
   if(conn->bits.httpproxy)
     infof(conn->data, "SOCKS5: connecting to HTTP proxy %s port %d\n",
@@ -426,18 +429,29 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
     return CURLE_COULDNT_CONNECT;
   }
 
-  socksreq[0] = 5; /* version */
+  if(auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
+    infof(conn->data,
+        "warning: unsupported value passed to CURLOPT_SOCKS5_AUTH: %lu\n",
+        auth);
+  if(!(auth & CURLAUTH_BASIC))
+    /* disable username/password auth */
+    proxy_user = NULL;
 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
-  socksreq[1] = (char)(proxy_name ? 3 : 2); /* number of methods (below) */
-  socksreq[2] = 0; /* no authentication */
-  socksreq[3] = 1; /* GSS-API */
-  socksreq[4] = 2; /* username/password */
-#else
-  socksreq[1] = (char)(proxy_name ? 2 : 1); /* number of methods (below) */
-  socksreq[2] = 0; /* no authentication */
-  socksreq[3] = 2; /* username/password */
+  if(auth & CURLAUTH_GSSAPI)
+    allow_gssapi = TRUE;
 #endif
 
+  idx = 0;
+  socksreq[idx++] = 5;   /* version */
+  idx++;                 /* reserve for the number of authentication methods */
+  socksreq[idx++] = 0;   /* no authentication */
+  if(allow_gssapi)
+    socksreq[idx++] = 1; /* GSS-API */
+  if(proxy_user)
+    socksreq[idx++] = 2; /* username/password */
+  /* write the number of authentication methods */
+  socksreq[1] = (unsigned char) (idx - 2);
+
   (void)curlx_nonblock(sock, FALSE);
 
   infof(data, "SOCKS5 communication to %s:%d\n", hostname, remote_port);
@@ -469,7 +483,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
 
   (void)curlx_nonblock(sock, FALSE);
 
-  result=Curl_blockread_all(conn, sock, (char *)socksreq, 2, &actualread);
+  result = Curl_blockread_all(conn, sock, (char *)socksreq, 2, &actualread);
   if(result || (actualread != 2)) {
     failf(data, "Unable to receive initial SOCKS5 response.");
     return CURLE_COULDNT_CONNECT;
@@ -484,7 +498,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
     ;
   }
 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
-  else if(socksreq[1] == 1) {
+  else if(allow_gssapi && (socksreq[1] == 1)) {
     code = Curl_SOCKS5_gssapi_negotiate(sockindex, conn);
     if(code) {
       failf(data, "Unable to negotiate SOCKS5 GSS-API context.");
@@ -494,13 +508,13 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
 #endif
   else if(socksreq[1] == 2) {
     /* Needs user name and password */
-    size_t proxy_name_len, proxy_password_len;
-    if(proxy_name && proxy_password) {
-      proxy_name_len = strlen(proxy_name);
+    size_t proxy_user_len, proxy_password_len;
+    if(proxy_user && proxy_password) {
+      proxy_user_len = strlen(proxy_user);
       proxy_password_len = strlen(proxy_password);
     }
     else {
-      proxy_name_len = 0;
+      proxy_user_len = 0;
       proxy_password_len = 0;
     }
 
@@ -513,10 +527,10 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
      */
     len = 0;
     socksreq[len++] = 1;    /* username/pw subnegotiation version */
-    socksreq[len++] = (unsigned char) proxy_name_len;
-    if(proxy_name && proxy_name_len)
-      memcpy(socksreq + len, proxy_name, proxy_name_len);
-    len += proxy_name_len;
+    socksreq[len++] = (unsigned char) proxy_user_len;
+    if(proxy_user && proxy_user_len)
+      memcpy(socksreq + len, proxy_user, proxy_user_len);
+    len += proxy_user_len;
     socksreq[len++] = (unsigned char) proxy_password_len;
     if(proxy_password && proxy_password_len)
       memcpy(socksreq + len, proxy_password, proxy_password_len);
@@ -528,7 +542,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
       return CURLE_COULDNT_CONNECT;
     }
 
-    result=Curl_blockread_all(conn, sock, (char *)socksreq, 2, &actualread);
+    result = Curl_blockread_all(conn, sock, (char *)socksreq, 2, &actualread);
     if(result || (actualread != 2)) {
       failf(data, "Unable to receive SOCKS5 sub-negotiation response.");
       return CURLE_COULDNT_CONNECT;
@@ -545,17 +559,13 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
   }
   else {
     /* error */
-#if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
-    if(socksreq[1] == 255) {
-#else
-    if(socksreq[1] == 1) {
+    if(!allow_gssapi && (socksreq[1] == 1)) {
       failf(data,
             "SOCKS5 GSSAPI per-message authentication is not supported.");
       return CURLE_COULDNT_CONNECT;
     }
     if(socksreq[1] == 255) {
-#endif
-      if(!proxy_name || !*proxy_name) {
+      if(!proxy_user || !*proxy_user) {
         failf(data,
               "No authentication method was acceptable. (It is quite likely"
               " that the SOCKS5 server wanted a username/password, since none"
@@ -605,7 +615,7 @@ CURLcode Curl_SOCKS5(const char *proxy_name,
      * returns a Curl_addrinfo pointer that may not always look the same.
      */
     if(dns)
-      hp=dns->addr;
+      hp = dns->addr;
     if(hp) {
       int i;
       char buf[64];
diff --git a/lib/socks_gssapi.c b/lib/socks_gssapi.c
index 54d0635..96948ac 100644
--- a/lib/socks_gssapi.c
+++ b/lib/socks_gssapi.c
@@ -5,8 +5,8 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2009, 2011, Markus Moeller, <markus_moeller at compuserve.com>
- * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2009, Markus Moeller, <markus_moeller at compuserve.com>
+ * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -65,7 +65,7 @@ static int check_gss_err(struct Curl_easy *data,
                                     &msg_ctx, &status_string);
       if(maj_stat == GSS_S_COMPLETE) {
         if(sizeof(buf) > len + status_string.length + 1) {
-          strcpy(buf+len, (char *) status_string.value);
+          strcpy(buf + len, (char *) status_string.value);
           len += status_string.length;
         }
         gss_release_buffer(&min_stat, &status_string);
@@ -74,7 +74,7 @@ static int check_gss_err(struct Curl_easy *data,
       gss_release_buffer(&min_stat, &status_string);
     }
     if(sizeof(buf) > len + 3) {
-      strcpy(buf+len, ".\n");
+      strcpy(buf + len, ".\n");
       len += 2;
     }
     msg_ctx = 0;
@@ -86,7 +86,7 @@ static int check_gss_err(struct Curl_easy *data,
                                     &msg_ctx, &status_string);
       if(maj_stat == GSS_S_COMPLETE) {
         if(sizeof(buf) > len + status_string.length)
-          strcpy(buf+len, (char *) status_string.value);
+          strcpy(buf + len, (char *) status_string.value);
         gss_release_buffer(&min_stat, &status_string);
         break;
       }
@@ -119,7 +119,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
   gss_name_t       server = GSS_C_NO_NAME;
   gss_name_t       gss_client_name = GSS_C_NO_NAME;
   unsigned short   us_length;
-  char             *user=NULL;
+  char             *user = NULL;
   unsigned char socksreq[4]; /* room for GSS-API exchange header only */
   const char *serviceptr = data->set.str[STRING_PROXY_SERVICE_NAME] ?
                            data->set.str[STRING_PROXY_SERVICE_NAME] : "rcmd";
@@ -146,11 +146,12 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
   }
   else {
     service.value = malloc(serviceptr_length +
-                           strlen(conn->socks_proxy.host.name)+2);
+                           strlen(conn->socks_proxy.host.name) + 2);
     if(!service.value)
       return CURLE_OUT_OF_MEMORY;
-    service.length = serviceptr_length + strlen(conn->socks_proxy.host.name)+1;
-    snprintf(service.value, service.length+1, "%s@%s",
+    service.length = serviceptr_length +
+      strlen(conn->socks_proxy.host.name) + 1;
+    snprintf(service.value, service.length + 1, "%s@%s",
              serviceptr, conn->socks_proxy.host.name);
 
     gss_major_status = gss_import_name(&gss_minor_status, &service,
@@ -196,7 +197,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
       socksreq[0] = 1;    /* GSS-API subnegotiation version */
       socksreq[1] = 1;    /* authentication message type */
       us_length = htons((short)gss_send_token.length);
-      memcpy(socksreq+2, &us_length, sizeof(short));
+      memcpy(socksreq + 2, &us_length, sizeof(short));
 
       code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
       if(code || (4 != written)) {
@@ -236,7 +237,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
      * +----+------+-----+----------------+
      */
 
-    result=Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
+    result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
     if(result || (actualread != 4)) {
       failf(data, "Failed to receive GSS-API authentication response.");
       gss_release_name(&gss_status, &server);
@@ -261,11 +262,11 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
       return CURLE_COULDNT_CONNECT;
     }
 
-    memcpy(&us_length, socksreq+2, sizeof(short));
+    memcpy(&us_length, socksreq + 2, sizeof(short));
     us_length = ntohs(us_length);
 
-    gss_recv_token.length=us_length;
-    gss_recv_token.value=malloc(us_length);
+    gss_recv_token.length = us_length;
+    gss_recv_token.value = malloc(us_length);
     if(!gss_recv_token.value) {
       failf(data,
             "Could not allocate memory for GSS-API authentication "
@@ -275,8 +276,8 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
       return CURLE_OUT_OF_MEMORY;
     }
 
-    result=Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
-                              gss_recv_token.length, &actualread);
+    result = Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
+                                gss_recv_token.length, &actualread);
 
     if(result || (actualread != us_length)) {
       failf(data, "Failed to receive GSS-API authentication token.");
@@ -312,7 +313,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     failf(data, "Failed to determine user name.");
     return CURLE_COULDNT_CONNECT;
   }
-  user=malloc(gss_send_token.length+1);
+  user = malloc(gss_send_token.length + 1);
   if(!user) {
     gss_delete_sec_context(&gss_status, &gss_context, NULL);
     gss_release_name(&gss_status, &gss_client_name);
@@ -326,7 +327,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
   gss_release_buffer(&gss_status, &gss_send_token);
   infof(data, "SOCKS5 server authencticated user %s with GSS-API.\n",user);
   free(user);
-  user=NULL;
+  user = NULL;
 
   /* Do encryption */
   socksreq[0] = 1;    /* GSS-API subnegotiation version */
@@ -341,7 +342,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     gss_enc = 1;
 
   infof(data, "SOCKS5 server supports GSS-API %s data protection.\n",
-        (gss_enc==0)?"no":((gss_enc==1)?"integrity":"confidentiality"));
+        (gss_enc == 0)?"no":((gss_enc==1)?"integrity":"confidentiality"));
   /* force for the moment to no data protection */
   gss_enc = 0;
   /*
@@ -376,7 +377,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
    */
   if(data->set.socks5_gssapi_nec) {
     us_length = htons((short)1);
-    memcpy(socksreq+2, &us_length, sizeof(short));
+    memcpy(socksreq + 2, &us_length, sizeof(short));
   }
   else {
     gss_send_token.length = 1;
@@ -401,7 +402,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     gss_release_buffer(&gss_status, &gss_send_token);
 
     us_length = htons((short)gss_w_token.length);
-    memcpy(socksreq+2, &us_length, sizeof(short));
+    memcpy(socksreq + 2, &us_length, sizeof(short));
   }
 
   code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
@@ -433,7 +434,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     gss_release_buffer(&gss_status, &gss_w_token);
   }
 
-  result=Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
+  result = Curl_blockread_all(conn, sock, (char *)socksreq, 4, &actualread);
   if(result || (actualread != 4)) {
     failf(data, "Failed to receive GSS-API encryption response.");
     gss_delete_sec_context(&gss_status, &gss_context, NULL);
@@ -455,17 +456,17 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     return CURLE_COULDNT_CONNECT;
   }
 
-  memcpy(&us_length, socksreq+2, sizeof(short));
+  memcpy(&us_length, socksreq + 2, sizeof(short));
   us_length = ntohs(us_length);
 
-  gss_recv_token.length= us_length;
-  gss_recv_token.value=malloc(gss_recv_token.length);
+  gss_recv_token.length = us_length;
+  gss_recv_token.value = malloc(gss_recv_token.length);
   if(!gss_recv_token.value) {
     gss_delete_sec_context(&gss_status, &gss_context, NULL);
     return CURLE_OUT_OF_MEMORY;
   }
-  result=Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
-                            gss_recv_token.length, &actualread);
+  result = Curl_blockread_all(conn, sock, (char *)gss_recv_token.value,
+                              gss_recv_token.length, &actualread);
 
   if(result || (actualread != us_length)) {
     failf(data, "Failed to receive GSS-API encryptrion type.");
@@ -513,8 +514,8 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
   }
 
   infof(data, "SOCKS5 access with%s protection granted.\n",
-        (socksreq[0]==0)?"out GSS-API data":
-        ((socksreq[0]==1)?" GSS-API integrity":" GSS-API confidentiality"));
+        (socksreq[0] == 0)?"out GSS-API data":
+        ((socksreq[0] == 1)?" GSS-API integrity":" GSS-API confidentiality"));
 
   conn->socks5_gssapi_enctype = socksreq[0];
   if(socksreq[0] == 0)
diff --git a/lib/socks_sspi.c b/lib/socks_sspi.c
index edc73ad..34699d3 100644
--- a/lib/socks_sspi.c
+++ b/lib/socks_sspi.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  * Copyright (C) 2009, 2011, Markus Moeller, <markus_moeller at compuserve.com>
  *
  * This software is licensed as described in the file COPYING, which
@@ -108,7 +108,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     if(!service_name)
       return CURLE_OUT_OF_MEMORY;
     snprintf(service_name, service_length +
-             strlen(conn->socks_proxy.host.name)+2, "%s/%s",
+             strlen(conn->socks_proxy.host.name) + 2, "%s/%s",
              service, conn->socks_proxy.host.name);
   }
 
@@ -199,7 +199,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
       socksreq[0] = 1;    /* GSS-API subnegotiation version */
       socksreq[1] = 1;    /* authentication message type */
       us_length = htons((short)sspi_send_token.cbBuffer);
-      memcpy(socksreq+2, &us_length, sizeof(short));
+      memcpy(socksreq + 2, &us_length, sizeof(short));
 
       code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
       if(code || (4 != written)) {
@@ -283,7 +283,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
       return CURLE_COULDNT_CONNECT;
     }
 
-    memcpy(&us_length, socksreq+2, sizeof(short));
+    memcpy(&us_length, socksreq + 2, sizeof(short));
     us_length = ntohs(us_length);
 
     sspi_recv_token.cbBuffer = us_length;
@@ -341,7 +341,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     gss_enc = 1;
 
   infof(data, "SOCKS5 server supports GSS-API %s data protection.\n",
-        (gss_enc==0)?"no":((gss_enc==1)?"integrity":"confidentiality") );
+        (gss_enc == 0)?"no":((gss_enc == 1)?"integrity":"confidentiality") );
   /* force to no data protection, avoid encryption/decryption for now */
   gss_enc = 0;
   /*
@@ -377,7 +377,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
 
   if(data->set.socks5_gssapi_nec) {
     us_length = htons((short)1);
-    memcpy(socksreq+2, &us_length, sizeof(short));
+    memcpy(socksreq + 2, &us_length, sizeof(short));
   }
   else {
     status = s_pSecFn->QueryContextAttributes(&sspi_context,
@@ -445,8 +445,8 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     memcpy((PUCHAR) sspi_send_token.pvBuffer +(int)sspi_w_token[0].cbBuffer,
            sspi_w_token[1].pvBuffer, sspi_w_token[1].cbBuffer);
     memcpy((PUCHAR) sspi_send_token.pvBuffer
-           +sspi_w_token[0].cbBuffer
-           +sspi_w_token[1].cbBuffer,
+           + sspi_w_token[0].cbBuffer
+           + sspi_w_token[1].cbBuffer,
            sspi_w_token[2].pvBuffer, sspi_w_token[2].cbBuffer);
 
     s_pSecFn->FreeContextBuffer(sspi_w_token[0].pvBuffer);
@@ -460,7 +460,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     sspi_w_token[2].cbBuffer = 0;
 
     us_length = htons((short)sspi_send_token.cbBuffer);
-    memcpy(socksreq+2, &us_length, sizeof(short));
+    memcpy(socksreq + 2, &us_length, sizeof(short));
   }
 
   code = Curl_write_plain(conn, sock, (char *)socksreq, 4, &written);
@@ -517,7 +517,7 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
     return CURLE_COULDNT_CONNECT;
   }
 
-  memcpy(&us_length, socksreq+2, sizeof(short));
+  memcpy(&us_length, socksreq + 2, sizeof(short));
   us_length = ntohs(us_length);
 
   sspi_w_token[0].cbBuffer = us_length;
@@ -588,8 +588,8 @@ CURLcode Curl_SOCKS5_gssapi_negotiate(int sockindex,
   }
 
   infof(data, "SOCKS5 access with%s protection granted.\n",
-        (socksreq[0]==0)?"out GSS-API data":
-        ((socksreq[0]==1)?" GSS-API integrity":" GSS-API confidentiality"));
+        (socksreq[0] == 0)?"out GSS-API data":
+        ((socksreq[0] == 1)?" GSS-API integrity":" GSS-API confidentiality"));
 
   /* For later use if encryption is required
      conn->socks5_gssapi_enctype = socksreq[0];
diff --git a/lib/speedcheck.c b/lib/speedcheck.c
index 8addedd..fe669f1 100644
--- a/lib/speedcheck.c
+++ b/lib/speedcheck.c
@@ -30,14 +30,14 @@
 
 void Curl_speedinit(struct Curl_easy *data)
 {
-  memset(&data->state.keeps_speed, 0, sizeof(struct timeval));
+  memset(&data->state.keeps_speed, 0, sizeof(struct curltime));
 }
 
 /*
  * @unittest: 1606
  */
 CURLcode Curl_speedcheck(struct Curl_easy *data,
-                         struct timeval now)
+                         struct curltime now)
 {
   if((data->progress.current_speed >= 0) && data->set.low_speed_time) {
     if(data->progress.current_speed < data->set.low_speed_limit) {
diff --git a/lib/speedcheck.h b/lib/speedcheck.h
index 7dbe3d6..5c2dc9a 100644
--- a/lib/speedcheck.h
+++ b/lib/speedcheck.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -28,6 +28,6 @@
 
 void Curl_speedinit(struct Curl_easy *data);
 CURLcode Curl_speedcheck(struct Curl_easy *data,
-                         struct timeval now);
+                         struct curltime now);
 
 #endif /* HEADER_CURL_SPEEDCHECK_H */
diff --git a/lib/splay.c b/lib/splay.c
index 1b301f9..69af446 100644
--- a/lib/splay.c
+++ b/lib/splay.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1997 - 2015, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1997 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -37,7 +37,7 @@
  * Splay using the key i (which may or may not be in the tree.) The starting
  * root is t.
  */
-struct Curl_tree *Curl_splay(struct timeval i,
+struct Curl_tree *Curl_splay(struct curltime i,
                              struct Curl_tree *t)
 {
   struct Curl_tree N, *l, *r, *y;
@@ -97,24 +97,26 @@ struct Curl_tree *Curl_splay(struct timeval i,
  *
  * @unittest: 1309
  */
-struct Curl_tree *Curl_splayinsert(struct timeval i,
+struct Curl_tree *Curl_splayinsert(struct curltime i,
                                    struct Curl_tree *t,
                                    struct Curl_tree *node)
 {
-  static const struct timeval KEY_NOTUSED = {-1, -1}; /* will *NEVER* appear */
+  static const struct curltime KEY_NOTUSED = {
+    (time_t)-1, (unsigned int)-1
+  }; /* will *NEVER* appear */
 
   if(node == NULL)
     return t;
 
   if(t != NULL) {
     t = Curl_splay(i, t);
-    if(compare(i, t->key)==0) {
+    if(compare(i, t->key) == 0) {
       /* There already exists a node in the tree with the very same key. Build
          a doubly-linked circular list of nodes. We add the new 'node' struct
          to the end of this list. */
 
       node->key = KEY_NOTUSED; /* we set the key in the sub node to NOTUSED
-                               to quickly identify this node as a subnode */
+                                  to quickly identify this node as a subnode */
       node->samen = t;
       node->samep = t->samep;
       t->samep->samen = node;
@@ -149,11 +151,11 @@ struct Curl_tree *Curl_splayinsert(struct timeval i,
 /* Finds and deletes the best-fit node from the tree. Return a pointer to the
    resulting tree.  best-fit means the smallest node if it is not larger than
    the key */
-struct Curl_tree *Curl_splaygetbest(struct timeval i,
-                                       struct Curl_tree *t,
-                                       struct Curl_tree **removed)
+struct Curl_tree *Curl_splaygetbest(struct curltime i,
+                                    struct Curl_tree *t,
+                                    struct Curl_tree **removed)
 {
-  static struct timeval tv_zero = {0, 0};
+  static struct curltime tv_zero = {0, 0};
   struct Curl_tree *x;
 
   if(!t) {
@@ -209,7 +211,9 @@ int Curl_splayremovebyaddr(struct Curl_tree *t,
                            struct Curl_tree *removenode,
                            struct Curl_tree **newroot)
 {
-  static const struct timeval KEY_NOTUSED = {-1, -1}; /* will *NEVER* appear */
+  static const struct curltime KEY_NOTUSED = {
+    (time_t)-1, (unsigned int)-1
+  }; /* will *NEVER* appear */
   struct Curl_tree *x;
 
   if(!t || !removenode)
diff --git a/lib/splay.h b/lib/splay.h
index da81894..4612ec2 100644
--- a/lib/splay.h
+++ b/lib/splay.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1997 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1997 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -22,30 +22,31 @@
  *
  ***************************************************************************/
 #include "curl_setup.h"
+#include "timeval.h"
 
 struct Curl_tree {
   struct Curl_tree *smaller; /* smaller node */
   struct Curl_tree *larger;  /* larger node */
   struct Curl_tree *samen;   /* points to the next node with identical key */
   struct Curl_tree *samep;   /* points to the prev node with identical key */
-  struct timeval key;        /* this node's "sort" key */
+  struct curltime key;        /* this node's "sort" key */
   void *payload;             /* data the splay code doesn't care about */
 };
 
-struct Curl_tree *Curl_splay(struct timeval i,
+struct Curl_tree *Curl_splay(struct curltime i,
                              struct Curl_tree *t);
 
-struct Curl_tree *Curl_splayinsert(struct timeval key,
+struct Curl_tree *Curl_splayinsert(struct curltime key,
                                    struct Curl_tree *t,
                                    struct Curl_tree *newnode);
 
 #if 0
-struct Curl_tree *Curl_splayremove(struct timeval key,
+struct Curl_tree *Curl_splayremove(struct curltime key,
                                    struct Curl_tree *t,
                                    struct Curl_tree **removed);
 #endif
 
-struct Curl_tree *Curl_splaygetbest(struct timeval key,
+struct Curl_tree *Curl_splaygetbest(struct curltime key,
                                     struct Curl_tree *t,
                                     struct Curl_tree **removed);
 
@@ -53,8 +54,8 @@ int Curl_splayremovebyaddr(struct Curl_tree *t,
                            struct Curl_tree *removenode,
                            struct Curl_tree **newroot);
 
-#define Curl_splaycomparekeys(i,j) ( ((i.tv_sec)  < (j.tv_sec))  ? -1 : \
-                                   ( ((i.tv_sec)  > (j.tv_sec))  ?  1 : \
+#define Curl_splaycomparekeys(i,j) ( ((i.tv_sec)  < (j.tv_sec)) ? -1 : \
+                                   ( ((i.tv_sec)  > (j.tv_sec)) ?  1 : \
                                    ( ((i.tv_usec) < (j.tv_usec)) ? -1 : \
                                    ( ((i.tv_usec) > (j.tv_usec)) ?  1 : 0))))
 
diff --git a/lib/ssh.c b/lib/ssh.c
index 00aeca9..5406bf0 100644
--- a/lib/ssh.c
+++ b/lib/ssh.c
@@ -177,6 +177,7 @@ const struct Curl_handler Curl_handler_scp = {
   ssh_perform_getsock,                  /* perform_getsock */
   scp_disconnect,                       /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_SSH,                             /* defport */
   CURLPROTO_SCP,                        /* protocol */
   PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION
@@ -203,6 +204,7 @@ const struct Curl_handler Curl_handler_sftp = {
   ssh_perform_getsock,                  /* perform_getsock */
   sftp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_SSH,                             /* defport */
   CURLPROTO_SFTP,                       /* protocol */
   PROTOPT_DIRLOCK | PROTOPT_CLOSEACTION
@@ -426,14 +428,14 @@ static CURLcode ssh_getworkingpath(struct connectdata *conn,
 
   /* Check for /~/, indicating relative to the user's home directory */
   if(conn->handler->protocol & CURLPROTO_SCP) {
-    real_path = malloc(working_path_len+1);
+    real_path = malloc(working_path_len + 1);
     if(real_path == NULL) {
       free(working_path);
       return CURLE_OUT_OF_MEMORY;
     }
     if((working_path_len > 3) && (!memcmp(working_path, "/~/", 3)))
       /* It is referenced to the home directory, so strip the leading '/~/' */
-      memcpy(real_path, working_path+3, 4 + working_path_len-3);
+      memcpy(real_path, working_path + 3, 4 + working_path_len-3);
     else
       memcpy(real_path, working_path, 1 + working_path_len);
   }
@@ -449,19 +451,19 @@ static CURLcode ssh_getworkingpath(struct connectdata *conn,
          leading '/' */
       memcpy(real_path, homedir, homelen);
       real_path[homelen] = '/';
-      real_path[homelen+1] = '\0';
+      real_path[homelen + 1] = '\0';
       if(working_path_len > 3) {
-        memcpy(real_path+homelen+1, working_path + 3,
+        memcpy(real_path + homelen + 1, working_path + 3,
                1 + working_path_len -3);
       }
     }
     else {
-      real_path = malloc(working_path_len+1);
+      real_path = malloc(working_path_len + 1);
       if(real_path == NULL) {
         free(working_path);
         return CURLE_OUT_OF_MEMORY;
       }
-      memcpy(real_path, working_path, 1+working_path_len);
+      memcpy(real_path, working_path, 1 + working_path_len);
     }
   }
 
@@ -1811,7 +1813,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
              zero even though libssh2_sftp_open() failed previously! We need
              to work around that! */
           sshc->actualcode = CURLE_SSH;
-          err=-1;
+          err = -1;
         }
         failf(data, "Upload failed: %s (%d/%d)",
               err>= LIBSSH2_FX_OK?sftp_libssh2_strerror(err):"ssh error",
@@ -1829,7 +1831,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
         }
 
         if(seekerr != CURL_SEEKFUNC_OK) {
-          curl_off_t passed=0;
+          curl_off_t passed = 0;
 
           if(seekerr != CURL_SEEKFUNC_CANTSEEK) {
             failf(data, "Could not seek stream");
@@ -1981,13 +1983,13 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
         sshc->actualcode = result?result:CURLE_SSH;
         break;
       }
-      sshc->readdir_filename = malloc(PATH_MAX+1);
+      sshc->readdir_filename = malloc(PATH_MAX + 1);
       if(!sshc->readdir_filename) {
         state(conn, SSH_SFTP_CLOSE);
         sshc->actualcode = CURLE_OUT_OF_MEMORY;
         break;
       }
-      sshc->readdir_longentry = malloc(PATH_MAX+1);
+      sshc->readdir_longentry = malloc(PATH_MAX + 1);
       if(!sshc->readdir_longentry) {
         Curl_safefree(sshc->readdir_filename);
         state(conn, SSH_SFTP_CLOSE);
@@ -2021,7 +2023,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
             break;
           }
           result = Curl_client_write(conn, CLIENTWRITE_BODY,
-                                     tmpLine, sshc->readdir_len+1);
+                                     tmpLine, sshc->readdir_len + 1);
           free(tmpLine);
 
           if(result) {
@@ -2030,7 +2032,7 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
           }
           /* since this counts what we send to the client, we include the
              newline in this counter */
-          data->req.bytecount += sshc->readdir_len+1;
+          data->req.bytecount += sshc->readdir_len + 1;
 
           /* output debug output if that is requested */
           if(data->set.verbose) {
@@ -2231,18 +2233,25 @@ static CURLcode ssh_statemach_act(struct connectdata *conn, bool *block)
           curl_off_t from, to;
           char *ptr;
           char *ptr2;
+          CURLofft to_t;
+          CURLofft from_t;
 
-          from=curlx_strtoofft(conn->data->state.range, &ptr, 0);
-          while(*ptr && (ISSPACE(*ptr) || (*ptr=='-')))
+          from_t = curlx_strtoofft(conn->data->state.range, &ptr, 0, &from);
+          if(from_t == CURL_OFFT_FLOW)
+            return CURLE_RANGE_ERROR;
+          while(*ptr && (ISSPACE(*ptr) || (*ptr == '-')))
             ptr++;
-          to=curlx_strtoofft(ptr, &ptr2, 0);
-          if((ptr == ptr2) /* no "to" value given */
+          to_t = curlx_strtoofft(ptr, &ptr2, 0, &to);
+          if(to_t == CURL_OFFT_FLOW)
+            return CURLE_RANGE_ERROR;
+          if((to_t == CURL_OFFT_INVAL) /* no "to" value given */
              || (to >= size)) {
             to = size - 1;
           }
-          if(from < 0) {
+          if(from_t) {
             /* from is relative to end of file */
-            from += size;
+            from = size - to;
+            to = size - 1;
           }
           if(from > size) {
             failf(data, "Offset (%"
@@ -2825,7 +2834,7 @@ static CURLcode ssh_block_statemach(struct connectdata *conn,
   while((sshc->state != SSH_STOP) && !result) {
     bool block;
     time_t left = 1000;
-    struct timeval now = Curl_tvnow();
+    struct curltime now = Curl_tvnow();
 
     result = ssh_statemach_act(conn, &block);
     if(result)
@@ -2933,6 +2942,13 @@ static CURLcode ssh_connect(struct connectdata *conn, bool *done)
     return CURLE_FAILED_INIT;
   }
 
+  if(data->set.ssh_compression) {
+#if LIBSSH2_VERSION_NUM >= 0x010208
+    if(libssh2_session_flag(ssh->ssh_session, LIBSSH2_FLAG_COMPRESS, 1) < 0)
+#endif
+      infof(data, "Failed to enable compression for ssh session\n");
+  }
+
 #ifdef HAVE_LIBSSH2_KNOWNHOST_API
   if(data->set.str[STRING_SSH_KNOWNHOSTS]) {
     int rc;
@@ -3029,8 +3045,8 @@ static CURLcode ssh_do(struct connectdata *conn, bool *done)
   data->req.size = -1; /* make sure this is unknown at this point */
 
   sshc->actualcode = CURLE_OK; /* reset error code */
-  sshc->secondCreateDirs =0;   /* reset the create dir attempt state
-                                  variable */
+  sshc->secondCreateDirs = 0;   /* reset the create dir attempt state
+                                   variable */
 
   Curl_pgrsSetUploadCounter(data, 0);
   Curl_pgrsSetDownloadCounter(data, 0);
diff --git a/lib/strcase.c b/lib/strcase.c
index a74a4be..24bcca9 100644
--- a/lib/strcase.c
+++ b/lib/strcase.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -94,10 +94,11 @@ char Curl_raw_toupper(char in)
 }
 
 /*
- * Curl_raw_equal() is for doing "raw" case insensitive strings. This is meant
- * to be locale independent and only compare strings we know are safe for
- * this.  See https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for
- * some further explanation to why this function is necessary.
+ * Curl_strcasecompare() is for doing "raw" case insensitive strings. This is
+ * meant to be locale independent and only compare strings we know are safe
+ * for this.  See
+ * https://daniel.haxx.se/blog/2008/10/15/strcasecmp-in-turkish/ for some
+ * further explanation to why this function is necessary.
  *
  * The function is capable of comparing a-z case insensitively even for
  * non-ascii.
diff --git a/lib/strdup.c b/lib/strdup.c
index 136b693..19cb044 100644
--- a/lib/strdup.c
+++ b/lib/strdup.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -44,11 +44,11 @@ char *curlx_strdup(const char *str)
   if(len >= ((size_t)-1) / sizeof(char))
     return (char *)NULL;
 
-  newstr = malloc((len+1)*sizeof(char));
+  newstr = malloc((len + 1)*sizeof(char));
   if(!newstr)
     return (char *)NULL;
 
-  memcpy(newstr, str, (len+1)*sizeof(char));
+  memcpy(newstr, str, (len + 1)*sizeof(char));
 
   return newstr;
 
diff --git a/lib/strerror.c b/lib/strerror.c
index 7e5cde4..83a96dd 100644
--- a/lib/strerror.c
+++ b/lib/strerror.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2004 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2004 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -49,6 +49,10 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
+#if defined(WIN32) || defined(_WIN32_WCE)
+#define PRESERVE_WINDOWS_ERROR_CODE
+#endif
+
 const char *
 curl_easy_strerror(CURLcode error)
 {
@@ -432,6 +436,10 @@ curl_share_strerror(CURLSHcode error)
 static const char *
 get_winsock_error (int err, char *buf, size_t len)
 {
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  DWORD old_win_err = GetLastError();
+#endif
+  int old_errno = errno;
   const char *p;
 
 #ifndef CURL_DISABLE_VERBOSE_STRINGS
@@ -611,6 +619,15 @@ get_winsock_error (int err, char *buf, size_t len)
 #endif
   strncpy(buf, p, len);
   buf [len-1] = '\0';
+
+  if(errno != old_errno)
+    errno = old_errno;
+
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  if(old_win_err != GetLastError())
+    SetLastError(old_win_err);
+#endif
+
   return buf;
 }
 #endif   /* USE_WINSOCK */
@@ -628,9 +645,12 @@ get_winsock_error (int err, char *buf, size_t len)
  */
 const char *Curl_strerror(struct connectdata *conn, int err)
 {
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  DWORD old_win_err = GetLastError();
+#endif
+  int old_errno = errno;
   char *buf, *p;
   size_t max;
-  int old_errno = ERRNO;
 
   DEBUGASSERT(conn);
   DEBUGASSERT(err >= 0);
@@ -722,8 +742,13 @@ const char *Curl_strerror(struct connectdata *conn, int err)
   if(p && (p - buf) >= 1)
     *p = '\0';
 
-  if(old_errno != ERRNO)
-    SET_ERRNO(old_errno);
+  if(errno != old_errno)
+    errno = old_errno;
+
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  if(old_win_err != GetLastError())
+    SetLastError(old_win_err);
+#endif
 
   return buf;
 }
@@ -731,16 +756,19 @@ const char *Curl_strerror(struct connectdata *conn, int err)
 #ifdef USE_WINDOWS_SSPI
 const char *Curl_sspi_strerror (struct connectdata *conn, int err)
 {
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  DWORD old_win_err = GetLastError();
+#endif
+  int old_errno = errno;
+  const char *txt;
+  char *outbuf;
+  size_t outmax;
 #ifndef CURL_DISABLE_VERBOSE_STRINGS
   char txtbuf[80];
   char msgbuf[sizeof(conn->syserr_buf)];
   char *p, *str, *msg = NULL;
   bool msg_formatted = FALSE;
-  int old_errno;
 #endif
-  const char *txt;
-  char *outbuf;
-  size_t outmax;
 
   DEBUGASSERT(conn);
 
@@ -750,8 +778,6 @@ const char *Curl_sspi_strerror (struct connectdata *conn, int err)
 
 #ifndef CURL_DISABLE_VERBOSE_STRINGS
 
-  old_errno = ERRNO;
-
   switch(err) {
     case SEC_E_OK:
       txt = "No error";
@@ -1051,9 +1077,6 @@ const char *Curl_sspi_strerror (struct connectdata *conn, int err)
       strncpy(outbuf, str, outmax);
   }
 
-  if(old_errno != ERRNO)
-    SET_ERRNO(old_errno);
-
 #else
 
   if(err == SEC_E_OK)
@@ -1067,6 +1090,14 @@ const char *Curl_sspi_strerror (struct connectdata *conn, int err)
 
   outbuf[outmax] = '\0';
 
+  if(errno != old_errno)
+    errno = old_errno;
+
+#ifdef PRESERVE_WINDOWS_ERROR_CODE
+  if(old_win_err != GetLastError())
+    SetLastError(old_win_err);
+#endif
+
   return outbuf;
 }
 #endif /* USE_WINDOWS_SSPI */
diff --git a/lib/strtoofft.c b/lib/strtoofft.c
index b854bf4..807fc54 100644
--- a/lib/strtoofft.c
+++ b/lib/strtoofft.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -20,6 +20,7 @@
  *
  ***************************************************************************/
 
+#include <errno.h>
 #include "curl_setup.h"
 
 #include "strtoofft.h"
@@ -29,10 +30,32 @@
  *
  * In the ISO C standard (IEEE Std 1003.1), there is a strtoimax() function we
  * could use in case strtoll() doesn't exist...  See
- * http://www.opengroup.org/onlinepubs/009695399/functions/strtoimax.html
+ * https://www.opengroup.org/onlinepubs/009695399/functions/strtoimax.html
  */
 
-#ifdef NEED_CURL_STRTOLL
+#if (SIZEOF_CURL_OFF_T > SIZEOF_LONG)
+#  ifdef HAVE_STRTOLL
+#    define strtooff strtoll
+#  else
+#    if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_INTEGRAL_MAX_BITS >= 64)
+#      if defined(_SAL_VERSION)
+         _Check_return_ _CRTIMP __int64 __cdecl _strtoi64(
+             _In_z_ const char *_String,
+             _Out_opt_ _Deref_post_z_ char **_EndPtr, _In_ int _Radix);
+#      else
+         _CRTIMP __int64 __cdecl _strtoi64(const char *_String,
+                                           char **_EndPtr, int _Radix);
+#      endif
+#      define strtooff _strtoi64
+#    else
+#      define PRIVATE_STRTOOFF 1
+#    endif
+#  endif
+#else
+#  define strtooff strtol
+#endif
+
+#ifdef PRIVATE_STRTOOFF
 
 /* Range tests can be used for alphanum decoding if characters are consecutive,
    like in ASCII. Else an array is scanned. Determine this condition now. */
@@ -48,11 +71,10 @@ static const char valchars[] =
 static int get_char(char c, int base);
 
 /**
- * Emulated version of the strtoll function.  This extracts a long long
+ * Custom version of the strtooff function.  This extracts a curl_off_t
  * value from the given input string and returns it.
  */
-curl_off_t
-curlx_strtoll(const char *nptr, char **endptr, int base)
+static curl_off_t strtooff(const char *nptr, char **endptr, int base)
 {
   char *end;
   int is_negative = 0;
@@ -132,7 +154,7 @@ curlx_strtoll(const char *nptr, char **endptr, int base)
     else
       value = CURL_OFF_T_MAX;
 
-    SET_ERRNO(ERANGE);
+    errno = ERANGE;
   }
 
   if(endptr)
@@ -186,3 +208,34 @@ static int get_char(char c, int base)
   return value;
 }
 #endif  /* Only present if we need strtoll, but don't have it. */
+
+/*
+ * Parse a *positive* up to 64 bit number written in ascii.
+ */
+CURLofft curlx_strtoofft(const char *str, char **endp, int base,
+                         curl_off_t *num)
+{
+  char *end;
+  curl_off_t number;
+  errno = 0;
+  *num = 0; /* clear by default */
+  while(str && *str && ISSPACE(*str))
+    str++;
+  if('-' == *str) {
+    if(endp)
+      *endp = (char *)str; /* didn't actually move */
+    return CURL_OFFT_INVAL; /* nothing parsed */
+  }
+  number = strtooff(str, &end, base);
+  if(endp)
+    *endp = end;
+  if(errno == ERANGE)
+    /* overflow/underflow */
+    return CURL_OFFT_FLOW;
+  else if(str == end)
+    /* nothing parsed */
+    return CURL_OFFT_INVAL;
+
+  *num = number;
+  return CURL_OFFT_OK;
+}
diff --git a/lib/strtoofft.h b/lib/strtoofft.h
index f4039f3..244411a 100644
--- a/lib/strtoofft.h
+++ b/lib/strtoofft.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -40,31 +40,7 @@
  * of 'long' the conversion function to use is strtol().
  */
 
-#if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
-#  ifdef HAVE_STRTOLL
-#    define curlx_strtoofft strtoll
-#  else
-#    if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_INTEGRAL_MAX_BITS >= 64)
-#      if defined(_SAL_VERSION)
-         _Check_return_ _CRTIMP __int64 __cdecl _strtoi64(
-             _In_z_ const char *_String,
-             _Out_opt_ _Deref_post_z_ char **_EndPtr, _In_ int _Radix);
-#      else
-         _CRTIMP __int64 __cdecl _strtoi64(const char *_String,
-                                           char **_EndPtr, int _Radix);
-#      endif
-#      define curlx_strtoofft _strtoi64
-#    else
-       curl_off_t curlx_strtoll(const char *nptr, char **endptr, int base);
-#      define curlx_strtoofft curlx_strtoll
-#      define NEED_CURL_STRTOLL 1
-#    endif
-#  endif
-#else
-#  define curlx_strtoofft strtol
-#endif
-
-#if (CURL_SIZEOF_CURL_OFF_T == 4)
+#if (SIZEOF_CURL_OFF_T == 4)
 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
 #else
    /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
@@ -72,4 +48,13 @@
 #endif
 #define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
 
+typedef enum {
+  CURL_OFFT_OK,    /* parsed fine */
+  CURL_OFFT_FLOW,  /* over or underflow */
+  CURL_OFFT_INVAL  /* nothing was parsed */
+} CURLofft;
+
+CURLofft curlx_strtoofft(const char *str, char **endp, int base,
+                         curl_off_t *num);
+
 #endif /* HEADER_CURL_STRTOOFFT_H */
diff --git a/lib/telnet.c b/lib/telnet.c
index 155d4b2..a7bed3d 100644
--- a/lib/telnet.c
+++ b/lib/telnet.c
@@ -76,7 +76,7 @@
   } WHILE_FALSE
 #define CURL_SB_ACCUM(x,c)                                   \
   do {                                                       \
-    if(x->subpointer < (x->subbuffer+sizeof x->subbuffer))   \
+    if(x->subpointer < (x->subbuffer + sizeof x->subbuffer)) \
       *x->subpointer++ = (c);                                \
   } WHILE_FALSE
 
@@ -192,6 +192,7 @@ const struct Curl_handler Curl_handler_telnet = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_TELNET,                          /* defport */
   CURLPROTO_TELNET,                     /* protocol */
   PROTOPT_NONE | PROTOPT_NOURLQUERY     /* flags */
@@ -294,8 +295,8 @@ static void negotiate(struct connectdata *conn)
   int i;
   struct TELNET *tn = (struct TELNET *) conn->data->req.protop;
 
-  for(i = 0;i < CURL_NTELOPTS;i++) {
-    if(i==CURL_TELOPT_ECHO)
+  for(i = 0; i < CURL_NTELOPTS; i++) {
+    if(i == CURL_TELOPT_ECHO)
       continue;
 
     if(tn->us_preferred[i] == CURL_YES)
@@ -791,7 +792,7 @@ static void printsub(struct Curl_easy *data,
       case CURL_TELOPT_NEW_ENVIRON:
         if(pointer[1] == CURL_TELQUAL_IS) {
           infof(data, " ");
-          for(i = 3;i < length;i++) {
+          for(i = 3; i < length; i++) {
             switch(pointer[i]) {
             case CURL_NEW_ENV_VAR:
               infof(data, ", ");
@@ -842,7 +843,7 @@ static CURLcode check_telnet_options(struct connectdata *conn)
     tn->us_preferred[CURL_TELOPT_NEW_ENVIRON] = CURL_YES;
   }
 
-  for(head = data->set.telnet_options; head; head=head->next) {
+  for(head = data->set.telnet_options; head; head = head->next) {
     if(sscanf(head->data, "%127[^= ]%*[ =]%255s",
               option_keyword, option_arg) == 2) {
 
@@ -889,8 +890,8 @@ static CURLcode check_telnet_options(struct connectdata *conn)
 
       /* To take care or not of the 8th bit in data exchange */
       if(strcasecompare(option_keyword, "BINARY")) {
-        binary_option=atoi(option_arg);
-        if(binary_option!=1) {
+        binary_option = atoi(option_arg);
+        if(binary_option != 1) {
           tn->us_preferred[CURL_TELOPT_BINARY] = CURL_NO;
           tn->him_preferred[CURL_TELOPT_BINARY] = CURL_NO;
         }
@@ -898,7 +899,7 @@ static CURLcode check_telnet_options(struct connectdata *conn)
       }
 
       failf(data, "Unknown telnet option %s", head->data);
-      result = CURLE_UNKNOWN_TELNET_OPTION;
+      result = CURLE_UNKNOWN_OPTION;
       break;
     }
     failf(data, "Syntax error in telnet option: %s", head->data);
@@ -934,7 +935,7 @@ static void suboption(struct connectdata *conn)
   struct Curl_easy *data = conn->data;
   struct TELNET *tn = (struct TELNET *)data->req.protop;
 
-  printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn)+2);
+  printsub(data, '<', (unsigned char *)tn->subbuffer, CURL_SB_LEN(tn) + 2);
   switch(CURL_SB_GET(tn)) {
     case CURL_TELOPT_TTYPE:
       len = strlen(tn->subopt_ttype) + 4 + 2;
@@ -966,7 +967,7 @@ static void suboption(struct connectdata *conn)
                CURL_TELQUAL_IS);
       len = 4;
 
-      for(v = tn->telnet_vars;v;v = v->next) {
+      for(v = tn->telnet_vars; v; v = v->next) {
         tmplen = (strlen(v->data) + 1);
         /* Add the variable only if it fits */
         if(len + tmplen < (int)sizeof(temp)-6) {
@@ -1018,8 +1019,8 @@ static void sendsuboption(struct connectdata *conn, int option)
     CURL_SB_ACCUM(tn, CURL_TELOPT_NAWS);
     /* We must deal either with litte or big endian processors */
     /* Window size must be sent according to the 'network order' */
-    x=htons(tn->subopt_wsx);
-    y=htons(tn->subopt_wsy);
+    x = htons(tn->subopt_wsx);
+    y = htons(tn->subopt_wsy);
     uc1 = (unsigned char *)&x;
     uc2 = (unsigned char *)&y;
     CURL_SB_ACCUM(tn, uc1[0]);
@@ -1032,7 +1033,7 @@ static void sendsuboption(struct connectdata *conn, int option)
     CURL_SB_TERM(tn);
     /* data suboption is now ready */
 
-    printsub(data, '>', (unsigned char *)tn->subbuffer+2,
+    printsub(data, '>', (unsigned char *)tn->subbuffer + 2,
              CURL_SB_LEN(tn)-2);
 
     /* we send the header of the suboption... */
@@ -1043,9 +1044,9 @@ static void sendsuboption(struct connectdata *conn, int option)
     }
     /* ... then the window size with the send_telnet_data() function
        to deal with 0xFF cases ... */
-    send_telnet_data(conn, (char *)tn->subbuffer+3, 4);
+    send_telnet_data(conn, (char *)tn->subbuffer + 3, 4);
     /* ... and the footer */
-    bytes_written = swrite(conn->sock[FIRSTSOCKET], tn->subbuffer+7, 2);
+    bytes_written = swrite(conn->sock[FIRSTSOCKET], tn->subbuffer + 7, 2);
     if(bytes_written < 0) {
       err = SOCKERRNO;
       failf(data, "Sending data failed (%d)", err);
@@ -1063,7 +1064,7 @@ CURLcode telrcv(struct connectdata *conn,
   unsigned char c;
   CURLcode result;
   int in = 0;
-  int startwrite=-1;
+  int startwrite = -1;
   struct Curl_easy *data = conn->data;
   struct TELNET *tn = (struct TELNET *)data->req.protop;
 
@@ -1326,7 +1327,7 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
   curl_off_t total_ul = 0;
 #endif
   ssize_t nread;
-  struct timeval now;
+  struct curltime now;
   bool keepon = TRUE;
   char *buf = data->state.buffer;
   struct TELNET *tn;
@@ -1356,14 +1357,14 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
   /* load ws2_32.dll and get the function pointers we need. */
   wsock2 = Curl_load_library(TEXT("WS2_32.DLL"));
   if(wsock2 == NULL) {
-    failf(data, "failed to load WS2_32.DLL (%d)", ERRNO);
+    failf(data, "failed to load WS2_32.DLL (%u)", GetLastError());
     return CURLE_FAILED_INIT;
   }
 
   /* Grab a pointer to WSACreateEvent */
   create_event_func = GetProcAddress(wsock2, "WSACreateEvent");
   if(create_event_func == NULL) {
-    failf(data, "failed to find WSACreateEvent function (%d)", ERRNO);
+    failf(data, "failed to find WSACreateEvent function (%u)", GetLastError());
     FreeLibrary(wsock2);
     return CURLE_FAILED_INIT;
   }
@@ -1371,7 +1372,7 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
   /* And WSACloseEvent */
   close_event_func = GetProcAddress(wsock2, "WSACloseEvent");
   if(close_event_func == NULL) {
-    failf(data, "failed to find WSACloseEvent function (%d)", ERRNO);
+    failf(data, "failed to find WSACloseEvent function (%u)", GetLastError());
     FreeLibrary(wsock2);
     return CURLE_FAILED_INIT;
   }
@@ -1379,7 +1380,7 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
   /* And WSAEventSelect */
   event_select_func = GetProcAddress(wsock2, "WSAEventSelect");
   if(event_select_func == NULL) {
-    failf(data, "failed to find WSAEventSelect function (%d)", ERRNO);
+    failf(data, "failed to find WSAEventSelect function (%u)", GetLastError());
     FreeLibrary(wsock2);
     return CURLE_FAILED_INIT;
   }
@@ -1387,7 +1388,8 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
   /* And WSAEnumNetworkEvents */
   enum_netevents_func = GetProcAddress(wsock2, "WSAEnumNetworkEvents");
   if(enum_netevents_func == NULL) {
-    failf(data, "failed to find WSAEnumNetworkEvents function (%d)", ERRNO);
+    failf(data, "failed to find WSAEnumNetworkEvents function (%u)",
+          GetLastError());
     FreeLibrary(wsock2);
     return CURLE_FAILED_INIT;
   }
@@ -1580,7 +1582,7 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
 
   /* We called LoadLibrary, so call FreeLibrary */
   if(!FreeLibrary(wsock2))
-    infof(data, "FreeLibrary(wsock2) failed (%d)", ERRNO);
+    infof(data, "FreeLibrary(wsock2) failed (%u)", GetLastError());
 #else
   pfd[0].fd = sockfd;
   pfd[0].events = POLLIN;
diff --git a/lib/tftp.c b/lib/tftp.c
index b2b3efe..4e599fd 100644
--- a/lib/tftp.c
+++ b/lib/tftp.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -76,12 +76,12 @@
 #define TFTP_OPTION_INTERVAL "timeout"
 
 typedef enum {
-  TFTP_MODE_NETASCII=0,
+  TFTP_MODE_NETASCII = 0,
   TFTP_MODE_OCTET
 } tftp_mode_t;
 
 typedef enum {
-  TFTP_STATE_START=0,
+  TFTP_STATE_START = 0,
   TFTP_STATE_RX,
   TFTP_STATE_TX,
   TFTP_STATE_FIN
@@ -100,7 +100,7 @@ typedef enum {
 } tftp_event_t;
 
 typedef enum {
-  TFTP_ERR_UNDEF=0,
+  TFTP_ERR_UNDEF = 0,
   TFTP_ERR_NOTFOUND,
   TFTP_ERR_PERM,
   TFTP_ERR_DISKFULL,
@@ -181,6 +181,7 @@ const struct Curl_handler Curl_handler_tftp = {
   ZERO_NULL,                            /* perform_getsock */
   tftp_disconnect,                      /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   PORT_TFTP,                            /* defport */
   CURLPROTO_TFTP,                       /* protocol */
   PROTOPT_NONE | PROTOPT_NOURLQUERY     /* flags */
@@ -216,7 +217,7 @@ static CURLcode tftp_set_timeouts(tftp_state_data_t *state)
   if(start) {
 
     maxtime = (time_t)(timeout_ms + 500) / 1000;
-    state->max_time = state->start_time+maxtime;
+    state->max_time = state->start_time + maxtime;
 
     /* Set per-block timeout to total */
     timeout = maxtime;
@@ -231,7 +232,7 @@ static CURLcode tftp_set_timeouts(tftp_state_data_t *state)
     /* Compute the re-start interval to suit the timeout */
     state->retry_time = (int)timeout/state->retry_max;
     if(state->retry_time<1)
-      state->retry_time=1;
+      state->retry_time = 1;
 
   }
   else {
@@ -240,7 +241,7 @@ static CURLcode tftp_set_timeouts(tftp_state_data_t *state)
     else
       maxtime = 3600;
 
-    state->max_time = state->start_time+maxtime;
+    state->max_time = state->start_time + maxtime;
 
     /* Set per-block timeout to total */
     timeout = maxtime;
@@ -250,15 +251,15 @@ static CURLcode tftp_set_timeouts(tftp_state_data_t *state)
   }
   /* But bound the total number */
   if(state->retry_max<3)
-    state->retry_max=3;
+    state->retry_max = 3;
 
   if(state->retry_max>50)
-    state->retry_max=50;
+    state->retry_max = 50;
 
   /* Compute the re-ACK interval to suit the timeout */
   state->retry_time = (int)(timeout/state->retry_max);
   if(state->retry_time<1)
-    state->retry_time=1;
+    state->retry_time = 1;
 
   infof(state->conn->data,
         "set timeouts for state %d; Total %ld, retry %d maxtry %d\n",
@@ -320,7 +321,7 @@ static const char *tftp_option_get(const char *buf, size_t len,
     return NULL;
   *option = buf;
 
-  loc += Curl_strnlen(buf+loc, len-loc);
+  loc += Curl_strnlen(buf + loc, len-loc);
   loc++; /* NULL term */
 
   if(loc > len)
@@ -474,7 +475,7 @@ static CURLcode tftp_send_first(tftp_state_data_t *state, tftp_event_t event)
       /* If we are uploading, send an WRQ */
       setpacketevent(&state->spacket, TFTP_EVENT_WRQ);
       state->conn->data->req.upload_fromhere =
-        (char *)state->spacket.data+4;
+        (char *)state->spacket.data + 4;
       if(data->state.infilesize != -1)
         Curl_pgrsSetUploadSize(data, data->state.infilesize);
     }
@@ -490,7 +491,13 @@ static CURLcode tftp_send_first(tftp_state_data_t *state, tftp_event_t event)
     if(result)
       return result;
 
-    snprintf((char *)state->spacket.data+2,
+    if(strlen(filename) > (state->blksize - strlen(mode) - 4)) {
+      failf(data, "TFTP file name too long\n");
+      free(filename);
+      return CURLE_TFTP_ILLEGAL; /* too long file name field */
+    }
+
+    snprintf((char *)state->spacket.data + 2,
              state->blksize,
              "%s%c%s%c", filename, '\0',  mode, '\0');
     sbytes = 4 + strlen(filename) + strlen(mode);
@@ -505,25 +512,25 @@ static CURLcode tftp_send_first(tftp_state_data_t *state, tftp_event_t event)
         strcpy(buf, "0"); /* the destination is large enough */
 
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes,
+                                (char *)state->spacket.data + sbytes,
                                 TFTP_OPTION_TSIZE);
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes, buf);
+                                (char *)state->spacket.data + sbytes, buf);
       /* add blksize option */
       snprintf(buf, sizeof(buf), "%d", state->requested_blksize);
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes,
+                                (char *)state->spacket.data + sbytes,
                                 TFTP_OPTION_BLKSIZE);
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes, buf);
+                                (char *)state->spacket.data + sbytes, buf);
 
       /* add timeout option */
       snprintf(buf, sizeof(buf), "%d", state->retry_time);
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes,
+                                (char *)state->spacket.data + sbytes,
                                 TFTP_OPTION_INTERVAL);
       sbytes += tftp_option_add(state, sbytes,
-                                (char *)state->spacket.data+sbytes, buf);
+                                (char *)state->spacket.data + sbytes, buf);
     }
 
     /* the typecase for the 3rd argument is mostly for systems that do
@@ -569,7 +576,7 @@ static CURLcode tftp_send_first(tftp_state_data_t *state, tftp_event_t event)
 
 /* the next blocknum is x + 1 but it needs to wrap at an unsigned 16bit
    boundary */
-#define NEXT_BLOCKNUM(x) (((x)+1)&0xffff)
+#define NEXT_BLOCKNUM(x) (((x) + 1)&0xffff)
 
 /**********************************************************
  *
@@ -620,7 +627,7 @@ static CURLcode tftp_rx(tftp_state_data_t *state, tftp_event_t event)
     }
 
     /* Check if completed (That is, a less than full packet is received) */
-    if(state->rbytes < (ssize_t)state->blksize+4) {
+    if(state->rbytes < (ssize_t)state->blksize + 4) {
       state->state = TFTP_STATE_FIN;
     }
     else {
@@ -736,7 +743,7 @@ static CURLcode tftp_tx(tftp_state_data_t *state, tftp_event_t event)
         else {
           /* Re-send the data packet */
           sbytes = sendto(state->sockfd, (void *)state->spacket.data,
-                          4+state->sbytes, SEND_4TH_ARG,
+                          4 + state->sbytes, SEND_4TH_ARG,
                           (struct sockaddr *)&state->remote_addr,
                           state->remote_addrlen);
           /* Check all sbytes were sent */
@@ -769,7 +776,7 @@ static CURLcode tftp_tx(tftp_state_data_t *state, tftp_event_t event)
      * data block.
      * */
     state->sbytes = 0;
-    state->conn->data->req.upload_fromhere = (char *)state->spacket.data+4;
+    state->conn->data->req.upload_fromhere = (char *)state->spacket.data + 4;
     do {
       result = Curl_fillreadbuffer(state->conn, state->blksize - state->sbytes,
                                    &cb);
@@ -806,7 +813,7 @@ static CURLcode tftp_tx(tftp_state_data_t *state, tftp_event_t event)
     else {
       /* Re-send the data packet */
       sbytes = sendto(state->sockfd, (void *)state->spacket.data,
-                      4+state->sbytes, SEND_4TH_ARG,
+                      4 + state->sbytes, SEND_4TH_ARG,
                       (struct sockaddr *)&state->remote_addr,
                       state->remote_addrlen);
       /* Check all sbytes were sent */
@@ -1102,11 +1109,11 @@ static CURLcode tftp_receive_packet(struct connectdata *conn)
   fromlen = sizeof(fromaddr);
   state->rbytes = (int)recvfrom(state->sockfd,
                                 (void *)state->rpacket.data,
-                                state->blksize+4,
+                                state->blksize + 4,
                                 0,
                                 (struct sockaddr *)&fromaddr,
                                 &fromlen);
-  if(state->remote_addrlen==0) {
+  if(state->remote_addrlen == 0) {
     memcpy(&state->remote_addr, &fromaddr, fromlen);
     state->remote_addrlen = fromlen;
   }
@@ -1128,7 +1135,7 @@ static CURLcode tftp_receive_packet(struct connectdata *conn)
       if(state->rbytes > 4 &&
          (NEXT_BLOCKNUM(state->block) == getrpacketblock(&state->rpacket))) {
         result = Curl_client_write(conn, CLIENTWRITE_BODY,
-                                   (char *)state->rpacket.data+4,
+                                   (char *)state->rpacket.data + 4,
                                    state->rbytes-4);
         if(result) {
           tftp_state_machine(state, TFTP_EVENT_ERROR);
@@ -1142,14 +1149,14 @@ static CURLcode tftp_receive_packet(struct connectdata *conn)
     {
       unsigned short error = getrpacketblock(&state->rpacket);
       state->error = (tftp_error_t)error;
-      infof(data, "%s\n", (const char *)state->rpacket.data+4);
+      infof(data, "%s\n", (const char *)state->rpacket.data + 4);
       break;
     }
     case TFTP_EVENT_ACK:
       break;
     case TFTP_EVENT_OACK:
       result = tftp_parse_option_ack(state,
-                                     (const char *)state->rpacket.data+2,
+                                     (const char *)state->rpacket.data + 2,
                                      state->rbytes-2);
       if(result)
         return result;
@@ -1193,7 +1200,7 @@ static long tftp_state_timeout(struct connectdata *conn, tftp_event_t *event)
     state->state = TFTP_STATE_FIN;
     return 0;
   }
-  if(current > state->rx_time+state->retry_time) {
+  if(current > state->rx_time + state->retry_time) {
     if(event)
       *event = TFTP_EVENT_TIMEOUT;
     time(&state->rx_time); /* update even though we received nothing */
@@ -1344,7 +1351,7 @@ static CURLcode tftp_do(struct connectdata *conn, bool *done)
 
   state = (tftp_state_data_t *)conn->proto.tftpc;
   if(!state)
-    return CURLE_BAD_CALLING_ORDER;
+    return CURLE_TFTP_ILLEGAL;
 
   result = tftp_perform(conn, done);
 
diff --git a/lib/timeval.c b/lib/timeval.c
index bed44c5..d7207b3 100644
--- a/lib/timeval.c
+++ b/lib/timeval.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -24,14 +24,14 @@
 
 #if defined(WIN32) && !defined(MSDOS)
 
-struct timeval curlx_tvnow(void)
+struct curltime curlx_tvnow(void)
 {
   /*
   ** GetTickCount() is available on _all_ Windows versions from W95 up
   ** to nowadays. Returns milliseconds elapsed since last system boot,
   ** increases monotonically and wraps once 49.7 days have elapsed.
   */
-  struct timeval now;
+  struct curltime now;
 #if !defined(_WIN32_WINNT) || !defined(_WIN32_WINNT_VISTA) || \
     (_WIN32_WINNT < _WIN32_WINNT_VISTA)
   DWORD milliseconds = GetTickCount();
@@ -39,8 +39,8 @@ struct timeval curlx_tvnow(void)
   now.tv_usec = (milliseconds % 1000) * 1000;
 #else
   ULONGLONG milliseconds = GetTickCount64();
-  now.tv_sec = (long) (milliseconds / 1000);
-  now.tv_usec = (long) (milliseconds % 1000) * 1000;
+  now.tv_sec = (time_t) (milliseconds / 1000);
+  now.tv_usec = (unsigned int) (milliseconds % 1000) * 1000;
 #endif
 
   return now;
@@ -48,7 +48,7 @@ struct timeval curlx_tvnow(void)
 
 #elif defined(HAVE_CLOCK_GETTIME_MONOTONIC)
 
-struct timeval curlx_tvnow(void)
+struct curltime curlx_tvnow(void)
 {
   /*
   ** clock_gettime() is granted to be increased monotonically when the
@@ -58,10 +58,11 @@ struct timeval curlx_tvnow(void)
   ** system has started up.
   */
   struct timeval now;
+  struct curltime cnow;
   struct timespec tsnow;
   if(0 == clock_gettime(CLOCK_MONOTONIC, &tsnow)) {
-    now.tv_sec = tsnow.tv_sec;
-    now.tv_usec = tsnow.tv_nsec / 1000;
+    cnow.tv_sec = tsnow.tv_sec;
+    cnow.tv_usec = (unsigned int)(tsnow.tv_nsec / 1000);
   }
   /*
   ** Even when the configure process has truly detected monotonic clock
@@ -69,20 +70,23 @@ struct timeval curlx_tvnow(void)
   ** run-time. When this occurs simply fallback to other time source.
   */
 #ifdef HAVE_GETTIMEOFDAY
-  else
+  else {
     (void)gettimeofday(&now, NULL);
+    cnow.tv_sec = now.tv_sec;
+    cnow.tv_usec = (unsigned int)now.tv_usec;
+  }
 #else
   else {
-    now.tv_sec = (long)time(NULL);
-    now.tv_usec = 0;
+    cnow.tv_sec = time(NULL);
+    cnow.tv_usec = 0;
   }
 #endif
-  return now;
+  return cnow;
 }
 
 #elif defined(HAVE_GETTIMEOFDAY)
 
-struct timeval curlx_tvnow(void)
+struct curltime curlx_tvnow(void)
 {
   /*
   ** gettimeofday() is not granted to be increased monotonically, due to
@@ -90,19 +94,22 @@ struct timeval curlx_tvnow(void)
   ** forward or backward in time.
   */
   struct timeval now;
+  struct curltime ret;
   (void)gettimeofday(&now, NULL);
-  return now;
+  ret.tv_sec = now.tv_sec;
+  ret.tv_usec = now.tv_usec;
+  return ret;
 }
 
 #else
 
-struct timeval curlx_tvnow(void)
+struct curltime curlx_tvnow(void)
 {
   /*
   ** time() returns the value of time in seconds since the Epoch.
   */
-  struct timeval now;
-  now.tv_sec = (long)time(NULL);
+  struct curltime now;
+  now.tv_sec = time(NULL);
   now.tv_usec = 0;
   return now;
 }
@@ -115,8 +122,10 @@ struct timeval curlx_tvnow(void)
  *
  * Returns: the time difference in number of milliseconds. For large diffs it
  * returns 0x7fffffff on 32bit time_t systems.
+ *
+ * @unittest: 1323
  */
-time_t curlx_tvdiff(struct timeval newer, struct timeval older)
+time_t curlx_tvdiff(struct curltime newer, struct curltime older)
 {
 #if SIZEOF_TIME_T < 8
   /* for 32bit time_t systems, add a precaution to avoid overflow for really
@@ -126,18 +135,28 @@ time_t curlx_tvdiff(struct timeval newer, struct timeval older)
     return 0x7fffffff;
 #endif
   return (newer.tv_sec-older.tv_sec)*1000+
-    (time_t)(newer.tv_usec-older.tv_usec)/1000;
+    (int)(newer.tv_usec-older.tv_usec)/1000;
 }
 
 /*
- * Same as curlx_tvdiff but with full usec resolution.
+ * Make sure that the first argument is the more recent time, as otherwise
+ * we'll get a weird negative time-diff back...
  *
- * Returns: the time difference in seconds with subsecond resolution.
+ * Returns: the time difference in number of microseconds. For too large diffs
+ * it returns max value.
  */
-double curlx_tvdiff_secs(struct timeval newer, struct timeval older)
+time_t Curl_tvdiff_us(struct curltime newer, struct curltime older)
 {
-  if(newer.tv_sec != older.tv_sec)
-    return (double)(newer.tv_sec-older.tv_sec)+
-      (double)(newer.tv_usec-older.tv_usec)/1000000.0;
-  return (double)(newer.tv_usec-older.tv_usec)/1000000.0;
+  time_t diff = newer.tv_sec-older.tv_sec;
+#if SIZEOF_TIME_T < 8
+  /* for 32bit time_t systems */
+  if(diff >= (0x7fffffff/1000000))
+    return 0x7fffffff;
+#else
+  /* for 64bit time_t systems */
+  if(diff >= (0x7fffffffffffffffLL/1000000))
+    return 0x7fffffffffffffffLL;
+#endif
+  return (newer.tv_sec-older.tv_sec)*1000000+
+    (int)(newer.tv_usec-older.tv_usec);
 }
diff --git a/lib/timeval.h b/lib/timeval.h
index 3396935..1ee4b30 100644
--- a/lib/timeval.h
+++ b/lib/timeval.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -29,7 +29,12 @@
 
 #include "curl_setup.h"
 
-struct timeval curlx_tvnow(void);
+struct curltime {
+  time_t       tv_sec;     /* seconds */
+  unsigned int tv_usec;    /* microseconds */
+};
+
+struct curltime curlx_tvnow(void);
 
 /*
  * Make sure that the first argument (t1) is the more recent time and t2 is
@@ -37,20 +42,20 @@ struct timeval curlx_tvnow(void);
  *
  * Returns: the time difference in number of milliseconds.
  */
-time_t curlx_tvdiff(struct timeval t1, struct timeval t2);
+time_t curlx_tvdiff(struct curltime t1, struct curltime t2);
 
 /*
- * Same as curlx_tvdiff but with full usec resolution.
+ * Make sure that the first argument (t1) is the more recent time and t2 is
+ * the older time, as otherwise you get a weird negative time-diff back...
  *
- * Returns: the time difference in seconds with subsecond resolution.
+ * Returns: the time difference in number of microseconds.
  */
-double curlx_tvdiff_secs(struct timeval t1, struct timeval t2);
+time_t Curl_tvdiff_us(struct curltime newer, struct curltime older);
 
 /* These two defines below exist to provide the older API for library
    internals only. */
 #define Curl_tvnow() curlx_tvnow()
 #define Curl_tvdiff(x,y) curlx_tvdiff(x,y)
-#define Curl_tvdiff_secs(x,y) curlx_tvdiff_secs(x,y)
 
 #endif /* HEADER_CURL_TIMEVAL_H */
 
diff --git a/lib/transfer.c b/lib/transfer.c
index 43e8f64..8e66d0d 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -73,12 +73,38 @@
 #include "connect.h"
 #include "non-ascii.h"
 #include "http2.h"
+#include "mime.h"
+#include "strcase.h"
 
 /* The last 3 #include files should be in this order */
 #include "curl_printf.h"
 #include "curl_memory.h"
 #include "memdebug.h"
 
+#if !defined(CURL_DISABLE_HTTP) || !defined(CURL_DISABLE_SMTP) || \
+    !defined(CURL_DISABLE_IMAP)
+/*
+ * checkheaders() checks the linked list of custom headers for a
+ * particular header (prefix).
+ *
+ * Returns a pointer to the first matching header or NULL if none matched.
+ */
+char *Curl_checkheaders(const struct connectdata *conn,
+                        const char *thisheader)
+{
+  struct curl_slist *head;
+  size_t thislen = strlen(thisheader);
+  struct Curl_easy *data = conn->data;
+
+  for(head = data->set.headers; head; head = head->next) {
+    if(strncasecompare(head->data, thisheader, thislen))
+      return head->data;
+  }
+
+  return NULL;
+}
+#endif
+
 /*
  * This function will call the read callback to fill our buffer with data
  * to upload.
@@ -195,27 +221,28 @@ CURLcode Curl_fillreadbuffer(struct connectdata *conn, int bytes, int *nreadp)
            strlen(endofline_network));
 
 #ifdef CURL_DOES_CONVERSIONS
-    CURLcode result;
-    int length;
-    if(data->set.prefer_ascii) {
-      /* translate the protocol and data */
-      length = nread;
-    }
-    else {
-      /* just translate the protocol portion */
-      length = strlen(hexbuffer);
+    {
+      CURLcode result;
+      int length;
+      if(data->set.prefer_ascii)
+        /* translate the protocol and data */
+        length = nread;
+      else
+        /* just translate the protocol portion */
+        length = (int)strlen(hexbuffer);
+      result = Curl_convert_to_network(data, data->req.upload_fromhere,
+                                       length);
+      /* Curl_convert_to_network calls failf if unsuccessful */
+      if(result)
+        return result;
     }
-    result = Curl_convert_to_network(data, data->req.upload_fromhere, length);
-    /* Curl_convert_to_network calls failf if unsuccessful */
-    if(result)
-      return result;
 #endif /* CURL_DOES_CONVERSIONS */
 
     if((nread - hexlen) == 0)
       /* mark this as done once this chunk is transferred */
       data->req.upload_done = TRUE;
 
-    nread+=(int)strlen(endofline_native); /* for the added end of line */
+    nread += (int)strlen(endofline_native); /* for the added end of line */
   }
 #ifdef CURL_DOES_CONVERSIONS
   else if((data->set.prefer_ascii) && (!sending_http_headers)) {
@@ -241,6 +268,7 @@ CURLcode Curl_fillreadbuffer(struct connectdata *conn, int bytes, int *nreadp)
 CURLcode Curl_readrewind(struct connectdata *conn)
 {
   struct Curl_easy *data = conn->data;
+  curl_mimepart *mimepart = &data->set.mimepost;
 
   conn->bits.rewindaftersend = FALSE; /* we rewind now */
 
@@ -253,9 +281,21 @@ CURLcode Curl_readrewind(struct connectdata *conn)
   /* We have sent away data. If not using CURLOPT_POSTFIELDS or
      CURLOPT_HTTPPOST, call app to rewind
   */
-  if(data->set.postfields ||
-     (data->set.httpreq == HTTPREQ_POST_FORM))
+  if(conn->handler->protocol & PROTO_FAMILY_HTTP) {
+    struct HTTP *http = data->req.protop;
+
+    if(http->sendit)
+      mimepart = http->sendit;
+  }
+  if(data->set.postfields)
     ; /* do nothing */
+  else if(data->set.httpreq == HTTPREQ_POST_MIME ||
+          data->set.httpreq == HTTPREQ_POST_FORM) {
+    if(Curl_mime_rewind(mimepart)) {
+      failf(data, "Cannot rewind mime/post data");
+      return CURLE_SEND_FAIL_REWIND;
+    }
+  }
   else {
     if(data->set.seek_func) {
       int err;
@@ -560,7 +600,7 @@ static CURLcode readwrite_data(struct Curl_easy *data,
             infof(data, "Ignoring the response-body\n");
           }
           if(data->state.resume_from && !k->content_range &&
-             (data->set.httpreq==HTTPREQ_GET) &&
+             (data->set.httpreq == HTTPREQ_GET) &&
              !k->ignorebody) {
 
             if(k->size == data->state.resume_from) {
@@ -915,7 +955,7 @@ static CURLcode readwrite_upload(struct Curl_easy *data,
         /* this is a paused transfer */
         break;
       }
-      if(nread<=0) {
+      if(nread <= 0) {
         result = done_sending(conn, k);
         if(result)
           return result;
@@ -1055,7 +1095,7 @@ CURLcode Curl_readwrite(struct connectdata *conn,
 {
   struct SingleRequest *k = &data->req;
   CURLcode result;
-  int didwhat=0;
+  int didwhat = 0;
 
   curl_socket_t fd_read;
   curl_socket_t fd_write;
@@ -1288,6 +1328,13 @@ CURLcode Curl_pretransfer(struct Curl_easy *data)
     failf(data, "No URL set!");
     return CURLE_URL_MALFORMAT;
   }
+  /* since the URL may have been redirected in a previous use of this handle */
+  if(data->change.url_alloc) {
+    /* the already set URL is allocated, free it first! */
+    Curl_safefree(data->change.url);
+    data->change.url_alloc = FALSE;
+  }
+  data->change.url = data->set.str[STRING_SET_URL];
 
   /* Init the SSL session ID cache here. We do it here since we want to do it
      after the *_setopt() calls (that could specify the size of the cache) but
@@ -1296,7 +1343,7 @@ CURLcode Curl_pretransfer(struct Curl_easy *data)
   if(result)
     return result;
 
-  data->set.followlocation=0; /* reset the location-follow counter */
+  data->set.followlocation = 0; /* reset the location-follow counter */
   data->state.this_is_a_follow = FALSE; /* reset this */
   data->state.errorbuf = FALSE; /* no error has occurred */
   data->state.httpversion = 0; /* don't assume any particular server version */
@@ -1338,7 +1385,7 @@ CURLcode Curl_pretransfer(struct Curl_easy *data)
 #endif
 
     Curl_initinfo(data); /* reset session-specific information "variables" */
-    Curl_pgrsResetTimesSizes(data);
+    Curl_pgrsResetTransferSizes(data);
     Curl_pgrsStartNow(data);
 
     if(data->set.timeout)
@@ -1384,19 +1431,59 @@ CURLcode Curl_posttransfer(struct Curl_easy *data)
 
 #ifndef CURL_DISABLE_HTTP
 /*
+ * Find the separator at the end of the host name, or the '?' in cases like
+ * http://www.url.com?id=2380
+ */
+static const char *find_host_sep(const char *url)
+{
+  const char *sep;
+  const char *query;
+
+  /* Find the start of the hostname */
+  sep = strstr(url, "//");
+  if(!sep)
+    sep = url;
+  else
+    sep += 2;
+
+  query = strchr(sep, '?');
+  sep = strchr(sep, '/');
+
+  if(!sep)
+    sep = url + strlen(url);
+
+  if(!query)
+    query = url + strlen(url);
+
+  return sep < query ? sep : query;
+}
+
+/*
  * strlen_url() returns the length of the given URL if the spaces within the
  * URL were properly URL encoded.
+ * URL encoding should be skipped for host names, otherwise IDN resolution
+ * will fail.
  */
-static size_t strlen_url(const char *url)
+static size_t strlen_url(const char *url, bool relative)
 {
   const unsigned char *ptr;
-  size_t newlen=0;
-  bool left=TRUE; /* left side of the ? */
+  size_t newlen = 0;
+  bool left = TRUE; /* left side of the ? */
+  const unsigned char *host_sep = (const unsigned char *) url;
+
+  if(!relative)
+    host_sep = (const unsigned char *) find_host_sep(url);
+
+  for(ptr = (unsigned char *)url; *ptr; ptr++) {
+
+    if(ptr < host_sep) {
+      ++newlen;
+      continue;
+    }
 
-  for(ptr=(unsigned char *)url; *ptr; ptr++) {
     switch(*ptr) {
     case '?':
-      left=FALSE;
+      left = FALSE;
       /* fall through */
     default:
       if(*ptr >= 0x80)
@@ -1405,7 +1492,7 @@ static size_t strlen_url(const char *url)
       break;
     case ' ':
       if(left)
-        newlen+=3;
+        newlen += 3;
       else
         newlen++;
       break;
@@ -1416,19 +1503,32 @@ static size_t strlen_url(const char *url)
 
 /* strcpy_url() copies a url to a output buffer and URL-encodes the spaces in
  * the source URL accordingly.
+ * URL encoding should be skipped for host names, otherwise IDN resolution
+ * will fail.
  */
-static void strcpy_url(char *output, const char *url)
+static void strcpy_url(char *output, const char *url, bool relative)
 {
   /* we must add this with whitespace-replacing */
-  bool left=TRUE;
+  bool left = TRUE;
   const unsigned char *iptr;
   char *optr = output;
+  const unsigned char *host_sep = (const unsigned char *) url;
+
+  if(!relative)
+    host_sep = (const unsigned char *) find_host_sep(url);
+
   for(iptr = (unsigned char *)url;    /* read from here */
       *iptr;         /* until zero byte */
       iptr++) {
+
+    if(iptr < host_sep) {
+      *optr++ = *iptr;
+      continue;
+    }
+
     switch(*iptr) {
     case '?':
-      left=FALSE;
+      left = FALSE;
       /* fall through */
     default:
       if(*iptr >= 0x80) {
@@ -1449,7 +1549,7 @@ static void strcpy_url(char *output, const char *url)
       break;
     }
   }
-  *optr=0; /* zero terminate output buffer */
+  *optr = 0; /* zero terminate output buffer */
 
 }
 
@@ -1481,32 +1581,33 @@ static char *concat_url(const char *base, const char *relurl)
   char *protsep;
   char *pathsep;
   size_t newlen;
+  bool host_changed = FALSE;
 
   const char *useurl = relurl;
   size_t urllen;
 
   /* we must make our own copy of the URL to play with, as it may
      point to read-only data */
-  char *url_clone=strdup(base);
+  char *url_clone = strdup(base);
 
   if(!url_clone)
     return NULL; /* skip out of this NOW */
 
   /* protsep points to the start of the host name */
-  protsep=strstr(url_clone, "//");
+  protsep = strstr(url_clone, "//");
   if(!protsep)
-    protsep=url_clone;
+    protsep = url_clone;
   else
-    protsep+=2; /* pass the slashes */
+    protsep += 2; /* pass the slashes */
 
   if('/' != relurl[0]) {
-    int level=0;
+    int level = 0;
 
     /* First we need to find out if there's a ?-letter in the URL,
        and cut it and the right-side of that off */
     pathsep = strchr(protsep, '?');
     if(pathsep)
-      *pathsep=0;
+      *pathsep = 0;
 
     /* we have a relative path to append to the last slash if there's one
        available, or if the new URL is just a query string (starts with a
@@ -1515,14 +1616,14 @@ static char *concat_url(const char *base, const char *relurl)
     if(useurl[0] != '?') {
       pathsep = strrchr(protsep, '/');
       if(pathsep)
-        *pathsep=0;
+        *pathsep = 0;
     }
 
     /* Check if there's any slash after the host name, and if so, remember
        that position instead */
     pathsep = strchr(protsep, '/');
     if(pathsep)
-      protsep = pathsep+1;
+      protsep = pathsep + 1;
     else
       protsep = NULL;
 
@@ -1530,13 +1631,13 @@ static char *concat_url(const char *base, const char *relurl)
        and act accordingly */
 
     if((useurl[0] == '.') && (useurl[1] == '/'))
-      useurl+=2; /* just skip the "./" */
+      useurl += 2; /* just skip the "./" */
 
     while((useurl[0] == '.') &&
           (useurl[1] == '.') &&
           (useurl[2] == '/')) {
       level++;
-      useurl+=3; /* pass the "../" */
+      useurl += 3; /* pass the "../" */
     }
 
     if(protsep) {
@@ -1544,9 +1645,9 @@ static char *concat_url(const char *base, const char *relurl)
         /* cut off one more level from the right of the original URL */
         pathsep = strrchr(protsep, '/');
         if(pathsep)
-          *pathsep=0;
+          *pathsep = 0;
         else {
-          *protsep=0;
+          *protsep = 0;
           break;
         }
       }
@@ -1558,9 +1659,10 @@ static char *concat_url(const char *base, const char *relurl)
     if((relurl[0] == '/') && (relurl[1] == '/')) {
       /* the new URL starts with //, just keep the protocol part from the
          original one */
-      *protsep=0;
+      *protsep = 0;
       useurl = &relurl[2]; /* we keep the slashes from the original, so we
                               skip the new ones */
+      host_changed = TRUE;
     }
     else {
       /* cut off the original URL from the first slash, or deal with URLs
@@ -1573,7 +1675,7 @@ static char *concat_url(const char *base, const char *relurl)
         char *sep = strchr(protsep, '?');
         if(sep && (sep < pathsep))
           pathsep = sep;
-        *pathsep=0;
+        *pathsep = 0;
       }
       else {
         /* There was no slash. Now, since we might be operating on a badly
@@ -1582,7 +1684,7 @@ static char *concat_url(const char *base, const char *relurl)
            ?-letter as well! */
         pathsep = strchr(protsep, '?');
         if(pathsep)
-          *pathsep=0;
+          *pathsep = 0;
       }
     }
   }
@@ -1592,7 +1694,7 @@ static char *concat_url(const char *base, const char *relurl)
      letter we replace each space with %20 while it is replaced with '+'
      on the right side of the '?' letter.
   */
-  newlen = strlen_url(useurl);
+  newlen = strlen_url(useurl, !host_changed);
 
   urllen = strlen(url_clone);
 
@@ -1614,7 +1716,7 @@ static char *concat_url(const char *base, const char *relurl)
     newest[urllen++]='/';
 
   /* then append the new piece on the right side */
-  strcpy_url(&newest[urllen], useurl);
+  strcpy_url(&newest[urllen], useurl, !host_changed);
 
   free(url_clone);
 
@@ -1673,7 +1775,7 @@ CURLcode Curl_follow(struct Curl_easy *data,
     }
   }
 
-  if(!is_absolute_url(newurl))  {
+  if(!is_absolute_url(newurl)) {
     /***
      *DANG* this is an RFC 2068 violation. The URL is supposed
      to be absolute and this doesn't seem to be that!
@@ -1687,15 +1789,16 @@ CURLcode Curl_follow(struct Curl_easy *data,
     /* The new URL MAY contain space or high byte values, that means a mighty
        stupid redirect URL but we still make an effort to do "right". */
     char *newest;
-    size_t newlen = strlen_url(newurl);
+    size_t newlen = strlen_url(newurl, FALSE);
 
     /* This is an absolute URL, don't allow the custom port number */
     disallowport = TRUE;
 
-    newest = malloc(newlen+1); /* get memory for this */
+    newest = malloc(newlen + 1); /* get memory for this */
     if(!newest)
       return CURLE_OUT_OF_MEMORY;
-    strcpy_url(newest, newurl); /* create a space-free URL */
+
+    strcpy_url(newest, newurl, FALSE); /* create a space-free URL */
     newurl = newest; /* use this instead now */
 
   }
@@ -1763,7 +1866,8 @@ CURLcode Curl_follow(struct Curl_easy *data,
      * can be overridden with CURLOPT_POSTREDIR.
      */
     if((data->set.httpreq == HTTPREQ_POST
-        || data->set.httpreq == HTTPREQ_POST_FORM)
+        || data->set.httpreq == HTTPREQ_POST_FORM
+        || data->set.httpreq == HTTPREQ_POST_MIME)
        && !(data->set.keep_post & CURL_REDIR_POST_301)) {
       infof(data, "Switch from POST to GET\n");
       data->set.httpreq = HTTPREQ_GET;
@@ -1787,7 +1891,8 @@ CURLcode Curl_follow(struct Curl_easy *data,
      * can be overridden with CURLOPT_POSTREDIR.
      */
     if((data->set.httpreq == HTTPREQ_POST
-        || data->set.httpreq == HTTPREQ_POST_FORM)
+        || data->set.httpreq == HTTPREQ_POST_FORM
+        || data->set.httpreq == HTTPREQ_POST_MIME)
        && !(data->set.keep_post & CURL_REDIR_POST_302)) {
       infof(data, "Switch from POST to GET\n");
       data->set.httpreq = HTTPREQ_GET;
@@ -1820,7 +1925,7 @@ CURLcode Curl_follow(struct Curl_easy *data,
     break;
   }
   Curl_pgrsTime(data, TIMER_REDIRECT);
-  Curl_pgrsResetTimesSizes(data);
+  Curl_pgrsResetTransferSizes(data);
 
   return CURLE_OK;
 #endif /* CURL_DISABLE_HTTP */
diff --git a/lib/transfer.h b/lib/transfer.h
index 5189672..72526a8 100644
--- a/lib/transfer.h
+++ b/lib/transfer.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -22,6 +22,9 @@
  *
  ***************************************************************************/
 
+char *Curl_checkheaders(const struct connectdata *conn,
+                        const char *thisheader);
+
 void Curl_init_CONNECT(struct Curl_easy *data);
 
 CURLcode Curl_pretransfer(struct Curl_easy *data);
diff --git a/lib/url.c b/lib/url.c
index 87446db..584635b 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -71,6 +71,7 @@ bool curl_win32_idn_to_ascii(const char *in, char **out);
 #include "netrc.h"
 
 #include "formdata.h"
+#include "mime.h"
 #include "vtls/vtls.h"
 #include "hostip.h"
 #include "transfer.h"
@@ -274,6 +275,7 @@ static const struct Curl_handler Curl_handler_dummy = {
   ZERO_NULL,                            /* perform_getsock */
   ZERO_NULL,                            /* disconnect */
   ZERO_NULL,                            /* readwrite */
+  ZERO_NULL,                            /* connection_check */
   0,                                    /* defport */
   0,                                    /* protocol */
   PROTOPT_NONE                          /* flags */
@@ -283,7 +285,7 @@ void Curl_freeset(struct Curl_easy *data)
 {
   /* Free all dynamic strings stored in the data->set substructure. */
   enum dupstring i;
-  for(i=(enum dupstring)0; i < STRING_LAST; i++) {
+  for(i = (enum dupstring)0; i < STRING_LAST; i++) {
     Curl_safefree(data->set.str[i]);
   }
 
@@ -370,7 +372,7 @@ CURLcode Curl_dupset(struct Curl_easy *dst, struct Curl_easy *src)
   memset(dst->set.str, 0, STRING_LAST * sizeof(char *));
 
   /* duplicate all strings */
-  for(i=(enum dupstring)0; i< STRING_LASTZEROTERMINATED; i++) {
+  for(i = (enum dupstring)0; i< STRING_LASTZEROTERMINATED; i++) {
     result = setstropt(&dst->set.str[i], src->set.str[i]);
     if(result)
       return result;
@@ -478,6 +480,8 @@ CURLcode Curl_close(struct Curl_easy *data)
   Curl_http2_cleanup_dependencies(data);
   Curl_convert_close(data);
 
+  Curl_mime_cleanpart(&data->set.mimepost);
+
   /* No longer a dirty share, if it exists */
   if(data->share) {
     Curl_share_lock(data, CURL_LOCK_DATA_SHARE, CURL_LOCK_ACCESS_SINGLE);
@@ -545,6 +549,9 @@ CURLcode Curl_init_userdefined(struct UserDefined *set)
   set->httpauth = CURLAUTH_BASIC;  /* defaults to basic */
   set->proxyauth = CURLAUTH_BASIC; /* defaults to basic */
 
+  /* SOCKS5 proxy auth defaults to username/password + GSS-API */
+  set->socks5auth = CURLAUTH_BASIC | CURLAUTH_GSSAPI;
+
   /* make libcurl quiet by default: */
   set->hide_progress = TRUE;  /* CURLOPT_NOPROGRESS changes these */
 
@@ -664,6 +671,8 @@ CURLcode Curl_open(struct Curl_easy **curl)
     result = CURLE_OUT_OF_MEMORY;
   }
 
+  Curl_mime_initpart(&data->set.mimepost, data);
+
   data->state.headerbuff = malloc(HEADERSIZE);
   if(!data->state.headerbuff) {
     DEBUGF(fprintf(stderr, "Error: malloc of headerbuff failed\n"));
@@ -672,7 +681,7 @@ CURLcode Curl_open(struct Curl_easy **curl)
   else {
     result = Curl_init_userdefined(&data->set);
 
-    data->state.headersize=HEADERSIZE;
+    data->state.headersize = HEADERSIZE;
 
     Curl_convert_init(data);
 
@@ -829,6 +838,10 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
          then this can be changed to HEAD later on) */
       data->set.httpreq = HTTPREQ_GET;
     break;
+  case CURLOPT_REQUEST_TARGET:
+    result = setstropt(&data->set.str[STRING_TARGET],
+                       va_arg(param, char *));
+    break;
   case CURLOPT_FILETIME:
     /*
      * Try to get the file time of the remote document. The time will
@@ -1139,6 +1152,20 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     data->set.httpreq = HTTPREQ_POST_FORM;
     data->set.opt_no_body = FALSE; /* this is implied */
     break;
+#endif   /* CURL_DISABLE_HTTP */
+
+  case CURLOPT_MIMEPOST:
+    /*
+     * Set to make us do MIME/form POST
+     */
+    result = curl_mime_subparts(&data->set.mimepost,
+                                va_arg(param, curl_mime *));
+    if(!result) {
+      data->set.mimepost.freefunc = NULL; /* Avoid free upon easy cleanup. */
+      data->set.httpreq = HTTPREQ_POST_MIME;
+      data->set.opt_no_body = FALSE; /* this is implied */
+    }
+    break;
 
   case CURLOPT_REFERER:
     /*
@@ -1168,6 +1195,7 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     data->set.headers = va_arg(param, struct curl_slist *);
     break;
 
+#ifndef CURL_DISABLE_HTTP
   case CURLOPT_PROXYHEADER:
     /*
      * Set a list with proxy headers to use (or replace internals with)
@@ -1319,7 +1347,7 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     }
 
     break;
-#endif /* CURL_DISABLE_COOKIES */
+#endif /* !CURL_DISABLE_COOKIES */
 
   case CURLOPT_HTTPGET:
     /*
@@ -1345,6 +1373,16 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     data->set.httpversion = arg;
     break;
 
+  case CURLOPT_EXPECT_100_TIMEOUT_MS:
+    /*
+     * Time to wait for a response to a HTTP request containing an
+     * Expect: 100-continue header before sending the data anyway.
+     */
+    data->set.expect_100_timeout = va_arg(param, long);
+    break;
+
+#endif   /* CURL_DISABLE_HTTP */
+
   case CURLOPT_HTTPAUTH:
     /*
      * Set HTTP Authentication type BITMASK.
@@ -1396,16 +1434,6 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
   }
   break;
 
-  case CURLOPT_EXPECT_100_TIMEOUT_MS:
-    /*
-     * Time to wait for a response to a HTTP request containing an
-     * Expect: 100-continue header before sending the data anyway.
-     */
-    data->set.expect_100_timeout = va_arg(param, long);
-    break;
-
-#endif   /* CURL_DISABLE_HTTP */
-
   case CURLOPT_CUSTOMREQUEST:
     /*
      * Set a custom string to use as request
@@ -1537,6 +1565,11 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     break;
 #endif   /* CURL_DISABLE_PROXY */
 
+  case CURLOPT_SOCKS5_AUTH:
+    data->set.socks5auth = va_arg(param, unsigned long);
+    if(data->set.socks5auth & ~(CURLAUTH_BASIC | CURLAUTH_GSSAPI))
+      result = CURLE_NOT_BUILT_IN;
+    break;
 #if defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)
   case CURLOPT_SOCKS5_GSSAPI_NEC:
     /*
@@ -1646,28 +1679,28 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
      * The low speed limit that if transfers are below this for
      * CURLOPT_LOW_SPEED_TIME, the transfer is aborted.
      */
-    data->set.low_speed_limit=va_arg(param, long);
+    data->set.low_speed_limit = va_arg(param, long);
     break;
   case CURLOPT_MAX_SEND_SPEED_LARGE:
     /*
      * When transfer uploads are faster then CURLOPT_MAX_SEND_SPEED_LARGE
      * bytes per second the transfer is throttled..
      */
-    data->set.max_send_speed=va_arg(param, curl_off_t);
+    data->set.max_send_speed = va_arg(param, curl_off_t);
     break;
   case CURLOPT_MAX_RECV_SPEED_LARGE:
     /*
      * When receiving data faster than CURLOPT_MAX_RECV_SPEED_LARGE bytes per
      * second the transfer is throttled..
      */
-    data->set.max_recv_speed=va_arg(param, curl_off_t);
+    data->set.max_recv_speed = va_arg(param, curl_off_t);
     break;
   case CURLOPT_LOW_SPEED_TIME:
     /*
      * The low speed time that if transfers are below the set
      * CURLOPT_LOW_SPEED_LIMIT during this time, the transfer is aborted.
      */
-    data->set.low_speed_time=va_arg(param, long);
+    data->set.low_speed_time = va_arg(param, long);
     break;
   case CURLOPT_URL:
     /*
@@ -1862,13 +1895,13 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     break;
   case CURLOPT_RESUME_FROM:
     /*
-     * Resume transfer at the give file position
+     * Resume transfer at the given file position
      */
     data->set.set_resume_from = va_arg(param, long);
     break;
   case CURLOPT_RESUME_FROM_LARGE:
     /*
-     * Resume transfer at the give file position
+     * Resume transfer at the given file position
      */
     data->set.set_resume_from = va_arg(param, curl_off_t);
     break;
@@ -2166,24 +2199,26 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
                                          TRUE : FALSE;
     break;
   case CURLOPT_SSL_CTX_FUNCTION:
-#ifdef have_curlssl_ssl_ctx
     /*
      * Set a SSL_CTX callback
      */
-    data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_ssl_ctx)
+      data->set.ssl.fsslctx = va_arg(param, curl_ssl_ctx_callback);
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_SSL_CTX_DATA:
-#ifdef have_curlssl_ssl_ctx
     /*
      * Set a SSL_CTX callback parameter pointer
      */
-    data->set.ssl.fsslctxp = va_arg(param, void *);
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_ssl_ctx)
+      data->set.ssl.fsslctxp = va_arg(param, void *);
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_SSL_FALSESTART:
     /*
@@ -2197,35 +2232,38 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     data->set.ssl.falsestart = (0 != va_arg(param, long)) ? TRUE : FALSE;
     break;
   case CURLOPT_CERTINFO:
-#ifdef have_curlssl_certinfo
-    data->set.ssl.certinfo = (0 != va_arg(param, long)) ? TRUE : FALSE;
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_certinfo)
+      data->set.ssl.certinfo = (0 != va_arg(param, long)) ? TRUE : FALSE;
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_PINNEDPUBLICKEY:
-#ifdef have_curlssl_pinnedpubkey /* only by supported backends */
     /*
      * Set pinned public key for SSL connection.
      * Specify file name of the public key in DER format.
      */
-    result = setstropt(&data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG],
-                       va_arg(param, char *));
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_pinnedpubkey)
+      result = setstropt(&data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG],
+                         va_arg(param, char *));
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_PROXY_PINNEDPUBLICKEY:
-#ifdef have_curlssl_pinnedpubkey /* only by supported backends */
     /*
      * Set pinned public key for SSL connection.
      * Specify file name of the public key in DER format.
      */
-    result = setstropt(&data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY],
-                       va_arg(param, char *));
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_pinnedpubkey)
+      result = setstropt(&data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY],
+                         va_arg(param, char *));
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_CAINFO:
     /*
@@ -2243,30 +2281,32 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
                        va_arg(param, char *));
     break;
   case CURLOPT_CAPATH:
-#ifdef have_curlssl_ca_path /* not supported by all backends */
     /*
      * Set CA path info for SSL connection. Specify directory name of the CA
      * certificates which have been prepared using openssl c_rehash utility.
      */
-    /* This does not work on windows. */
-    result = setstropt(&data->set.str[STRING_SSL_CAPATH_ORIG],
-                       va_arg(param, char *));
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_ca_path)
+      /* This does not work on windows. */
+      result = setstropt(&data->set.str[STRING_SSL_CAPATH_ORIG],
+                         va_arg(param, char *));
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_PROXY_CAPATH:
-#ifdef have_curlssl_ca_path /* not supported by all backends */
     /*
      * Set CA path info for SSL connection proxy. Specify directory name of the
      * CA certificates which have been prepared using openssl c_rehash utility.
      */
-    /* This does not work on windows. */
-    result = setstropt(&data->set.str[STRING_SSL_CAPATH_PROXY],
-                       va_arg(param, char *));
-#else
-    result = CURLE_NOT_BUILT_IN;
+#ifdef USE_SSL
+    if(Curl_ssl->have_ca_path)
+      /* This does not work on windows. */
+      result = setstropt(&data->set.str[STRING_SSL_CAPATH_PROXY],
+                         va_arg(param, char *));
+    else
 #endif
+      result = CURLE_NOT_BUILT_IN;
     break;
   case CURLOPT_CRLFILE:
     /*
@@ -2897,7 +2937,7 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
     return CURLE_NOT_BUILT_IN;
 #else
     arg = va_arg(param, long);
-    if((arg>=1) && (arg <= 256))
+    if((arg >= 1) && (arg <= 256))
       data->set.stream_weight = (int)arg;
     break;
 #endif
@@ -2923,6 +2963,9 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
   case CURLOPT_SUPPRESS_CONNECT_HEADERS:
     data->set.suppress_connect_headers = (0 != va_arg(param, long))?TRUE:FALSE;
     break;
+  case CURLOPT_SSH_COMPRESSION:
+    data->set.ssh_compression = (0 != va_arg(param, long))?TRUE:FALSE;
+    break;
   default:
     /* unknown tag and its companion, just ignore: */
     result = CURLE_UNKNOWN_OPTION;
@@ -3023,7 +3066,7 @@ static void conn_free(struct connectdata *conn)
   Curl_safefree(conn->http_proxy.host.rawalloc); /* http proxy name buffer */
   Curl_safefree(conn->socks_proxy.host.rawalloc); /* socks proxy name buffer */
   Curl_safefree(conn->master_buffer);
-  Curl_safefree(conn->connect_buffer);
+  Curl_safefree(conn->connect_state);
 
   conn_reset_all_postponed_data(conn);
 
@@ -3260,9 +3303,9 @@ Curl_oldest_idle_connection(struct Curl_easy *data)
   struct curl_hash_iterator iter;
   struct curl_llist_element *curr;
   struct curl_hash_element *he;
-  time_t highscore=-1;
+  time_t highscore =- 1;
   time_t score;
-  struct timeval now;
+  struct curltime now;
   struct connectdata *conn_candidate = NULL;
   struct connectbundle *bundle;
 
@@ -3323,9 +3366,9 @@ find_oldest_idle_connection_in_bundle(struct Curl_easy *data,
                                       struct connectbundle *bundle)
 {
   struct curl_llist_element *curr;
-  time_t highscore=-1;
+  time_t highscore = -1;
   time_t score;
-  struct timeval now;
+  struct curltime now;
   struct connectdata *conn_candidate = NULL;
   struct connectdata *conn;
 
@@ -3367,11 +3410,19 @@ static bool disconnect_if_dead(struct connectdata *conn,
        handles in pipeline and the connection isn't already marked in
        use */
     bool dead;
-    if(conn->handler->protocol & CURLPROTO_RTSP)
-      /* RTSP is a special case due to RTP interleaving */
-      dead = Curl_rtsp_connisdead(conn);
-    else
+
+    if(conn->handler->connection_check) {
+      /* The protocol has a special method for checking the state of the
+         connection. Use it to check if the connection is dead. */
+      unsigned int state;
+
+      state = conn->handler->connection_check(conn, CONNCHECK_ISDEAD);
+      dead = (state & CONNRESULT_DEAD);
+    }
+    else {
+      /* Use the general method for determining the death of a connection */
       dead = SocketIsDead(conn->sock[FIRSTSOCKET]);
+    }
 
     if(dead) {
       conn->data = data;
@@ -3405,7 +3456,7 @@ static int call_disconnect_if_dead(struct connectdata *conn,
  */
 static void prune_dead_connections(struct Curl_easy *data)
 {
-  struct timeval now = Curl_tvnow();
+  struct curltime now = Curl_tvnow();
   time_t elapsed = Curl_tvdiff(now, data->state.conn_cache->last_cleanup);
 
   if(elapsed >= 1000L) {
@@ -3946,7 +3997,7 @@ int Curl_doing_getsock(struct connectdata *conn,
 CURLcode Curl_protocol_connecting(struct connectdata *conn,
                                   bool *done)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
 
   if(conn && conn->handler->connecting) {
     *done = FALSE;
@@ -3965,7 +4016,7 @@ CURLcode Curl_protocol_connecting(struct connectdata *conn,
 
 CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
 
   if(conn && conn->handler->doing) {
     *done = FALSE;
@@ -3985,7 +4036,7 @@ CURLcode Curl_protocol_doing(struct connectdata *conn, bool *done)
 CURLcode Curl_protocol_connect(struct connectdata *conn,
                                bool *protocol_done)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
 
   *protocol_done = FALSE;
 
@@ -4013,7 +4064,7 @@ CURLcode Curl_protocol_connect(struct connectdata *conn,
       return CURLE_OK;
 
     if(conn->bits.tunnel_proxy && conn->bits.httpproxy &&
-       (conn->tunnel_state[FIRSTSOCKET] != TUNNEL_COMPLETE))
+       Curl_connect_ongoing(conn))
       /* when using an HTTP tunnel proxy, await complete tunnel establishment
          before proceeding further. Return CURLE_OK so we'll be called again */
       return CURLE_OK;
@@ -4072,7 +4123,7 @@ static void fix_hostname(struct connectdata *conn, struct hostname *host)
   if(len && (host->name[len-1] == '.'))
     /* strip off a single trailing dot if present, primarily for SNI but
        there's no use for it */
-    host->name[len-1]=0;
+    host->name[len-1] = 0;
 
   /* Check name for non-ASCII and convert hostname to ACE form if we can */
   if(!is_ASCII_name(host->name)) {
@@ -4125,7 +4176,7 @@ static void free_fixed_hostname(struct hostname *host)
     host->encalloc = NULL;
   }
 #elif defined(USE_WIN32_IDN)
-  free(host->encalloc); /* must be freed withidn_free() since this was
+  free(host->encalloc); /* must be freed with free() since this was
                            allocated by curl_win32_idn_to_ascii */
   host->encalloc = NULL;
 #else
@@ -4145,7 +4196,12 @@ static void llist_dtor(void *user, void *element)
  */
 static struct connectdata *allocate_conn(struct Curl_easy *data)
 {
-  struct connectdata *conn = calloc(1, sizeof(struct connectdata));
+#ifdef USE_SSL
+#define SSL_EXTRA + 4 * Curl_ssl->sizeof_ssl_backend_data - sizeof(long long)
+#else
+#define SSL_EXTRA 0
+#endif
+  struct connectdata *conn = calloc(1, sizeof(struct connectdata) + SSL_EXTRA);
   if(!conn)
     return NULL;
 
@@ -4228,6 +4284,23 @@ static struct connectdata *allocate_conn(struct Curl_easy *data)
 
   conn->ip_version = data->set.ipver;
 
+#ifdef USE_SSL
+  /*
+   * To save on malloc()s, the SSL backend-specific data has been allocated
+   * at the end of the connectdata struct.
+   */
+  {
+    char *p = (char *)&conn->align_data__do_not_use;
+    conn->ssl[0].backend = (struct ssl_backend_data *)p;
+    conn->ssl[1].backend =
+      (struct ssl_backend_data *)(p + Curl_ssl->sizeof_ssl_backend_data);
+    conn->proxy_ssl[0].backend =
+      (struct ssl_backend_data *)(p + Curl_ssl->sizeof_ssl_backend_data * 2);
+    conn->proxy_ssl[1].backend =
+      (struct ssl_backend_data *)(p + Curl_ssl->sizeof_ssl_backend_data * 3);
+  }
+#endif
+
 #if !defined(CURL_DISABLE_HTTP) && defined(USE_NTLM) && \
     defined(NTLM_WB_ENABLED)
   conn->ntlm_auth_hlpr_socket = CURL_SOCKET_BAD;
@@ -4363,11 +4436,16 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
     return CURLE_URL_MALFORMAT;
   }
 
-  /* Make sure we don't mistake a drive letter for a scheme, for example:
+  /* MSDOS/Windows style drive prefix, eg c: in c:foo */
+#define STARTS_WITH_DRIVE_PREFIX(str) \
+  ((('a' <= str[0] && str[0] <= 'z') || \
+    ('A' <= str[0] && str[0] <= 'Z')) && \
+   (str[1] == ':'))
+
+  /* Don't mistake a drive letter for a scheme if the default protocol is file.
      curld --proto-default file c:/foo/bar.txt */
-  if((('a' <= data->change.url[0] && data->change.url[0] <= 'z') ||
-      ('A' <= data->change.url[0] && data->change.url[0] <= 'Z')) &&
-     data->change.url[1] == ':' && data->set.str[STRING_DEFAULT_PROTOCOL] &&
+  if(STARTS_WITH_DRIVE_PREFIX(data->change.url) &&
+     data->set.str[STRING_DEFAULT_PROTOCOL] &&
      strcasecompare(data->set.str[STRING_DEFAULT_PROTOCOL], "file")) {
     ; /* do nothing */
   }
@@ -4386,8 +4464,6 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
   if((url_has_scheme && strncasecompare(data->change.url, "file:", 5)) ||
      (!url_has_scheme && data->set.str[STRING_DEFAULT_PROTOCOL] &&
       strcasecompare(data->set.str[STRING_DEFAULT_PROTOCOL], "file"))) {
-    bool path_has_drive = FALSE;
-
     if(url_has_scheme)
       rc = sscanf(data->change.url, "%*15[^\n/:]:%[^\n]", path);
     else
@@ -4406,20 +4482,15 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
 
       /* This cannot be done with strcpy() in a portable manner, since the
          memory areas overlap! */
-      memmove(path, path + 2, strlen(path + 2)+1);
+      memmove(path, path + 2, strlen(path + 2) + 1);
     }
 
-    /* the path may start with a drive letter. for backwards compatibility
-       we skip some processing on those paths. */
-    path_has_drive = (('a' <= path[0] && path[0] <= 'z') ||
-                      ('A' <= path[0] && path[0] <= 'Z')) && path[1] == ':';
-
     /*
      * we deal with file://<host>/<path> differently since it supports no
      * hostname other than "localhost" and "127.0.0.1", which is unique among
      * the URL protocols specified in RFC 1738
      */
-    if(path[0] != '/' && !path_has_drive) {
+    if(path[0] != '/' && !STARTS_WITH_DRIVE_PREFIX(path)) {
       /* the URL includes a host name, it must match "localhost" or
          "127.0.0.1" to be valid */
       char *ptr;
@@ -4452,14 +4523,11 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
         ptr++;
 
       /* This cannot be made with strcpy, as the memory chunks overlap! */
-      memmove(path, ptr, strlen(ptr)+1);
-
-      path_has_drive = (('a' <= path[0] && path[0] <= 'z') ||
-                        ('A' <= path[0] && path[0] <= 'Z')) && path[1] == ':';
+      memmove(path, ptr, strlen(ptr) + 1);
     }
 
 #if !defined(MSDOS) && !defined(WIN32) && !defined(__CYGWIN__)
-    if(path_has_drive) {
+    if(STARTS_WITH_DRIVE_PREFIX(path)) {
       failf(data, "File drive letters are only accepted in MSDOS/Windows.");
       return CURLE_URL_MALFORMAT;
     }
@@ -4471,7 +4539,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
   else {
     /* clear path */
     char slashbuf[4];
-    path[0]=0;
+    path[0] = 0;
 
     rc = sscanf(data->change.url,
                 "%15[^\n/:]:%3[/]%[^\n/?#]%[^\n]",
@@ -4556,7 +4624,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
    */
   at = strchr(conn->host.name, '@');
   if(at)
-    query = strchr(at+1, '?');
+    query = strchr(at + 1, '?');
   else
     query = strchr(conn->host.name, '?');
 
@@ -4574,15 +4642,15 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
 
     /* move the existing path plus the zero byte forward, to make room for
        the host-name part */
-    memmove(path+hostlen+1, path, pathlen+1);
+    memmove(path + hostlen + 1, path, pathlen + 1);
 
      /* now copy the trailing host part in front of the existing path */
-    memcpy(path+1, query, hostlen);
+    memcpy(path + 1, query, hostlen);
 
     path[0]='/'; /* prepend the missing slash */
     rebuild_url = TRUE;
 
-    *query=0; /* now cut off the hostname at the ? */
+    *query = 0; /* now cut off the hostname at the ? */
   }
   else if(!path[0]) {
     /* if there's no path set, use a single slash */
@@ -4598,7 +4666,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
     /* We need this function to deal with overlapping memory areas. We know
        that the memory area 'path' points to is 'urllen' bytes big and that
        is bigger than the path. Use +1 to move the zero byte too. */
-    memmove(&path[1], path, strlen(path)+1);
+    memmove(&path[1], path, strlen(path) + 1);
     path[0] = '/';
     rebuild_url = TRUE;
   }
@@ -4704,7 +4772,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
       if(*endp == ']') {
         /* The address scope was well formed.  Knock it out of the
            hostname. */
-        memmove(percent, endp, strlen(endp)+1);
+        memmove(percent, endp, strlen(endp) + 1);
         conn->scope_id = (unsigned int)scope;
       }
       else {
@@ -4974,7 +5042,7 @@ static char *detect_proxy(struct connectdata *conn)
   strcpy(envp, "_proxy");
 
   /* read the protocol proxy: */
-  prox=curl_getenv(proxy_env);
+  prox = curl_getenv(proxy_env);
 
   /*
    * We don't try the uppercase version of HTTP_PROXY because of
@@ -4991,7 +5059,7 @@ static char *detect_proxy(struct connectdata *conn)
   if(!prox && !strcasecompare("http_proxy", proxy_env)) {
     /* There was no lowercase variable, try the uppercase version: */
     Curl_strntoupper(proxy_env, proxy_env, sizeof(proxy_env));
-    prox=curl_getenv(proxy_env);
+    prox = curl_getenv(proxy_env);
   }
 
   if(prox)
@@ -4999,7 +5067,7 @@ static char *detect_proxy(struct connectdata *conn)
   else {
     proxy = curl_getenv("all_proxy"); /* default proxy to use */
     if(!proxy)
-      proxy=curl_getenv("ALL_PROXY");
+      proxy = curl_getenv("ALL_PROXY");
   }
 
   return proxy;
@@ -5034,7 +5102,7 @@ static CURLcode parse_proxy(struct Curl_easy *data,
   /* Parse the protocol part if present */
   endofprot = strstr(proxy, "://");
   if(endofprot) {
-    proxyptr = endofprot+3;
+    proxyptr = endofprot + 3;
     if(checkprefix("https", proxy))
       proxytype = CURLPROXY_HTTPS;
     else if(checkprefix("socks5h", proxy))
@@ -5056,13 +5124,14 @@ static CURLcode parse_proxy(struct Curl_easy *data,
   else
     proxyptr = proxy; /* No xxx:// head: It's a HTTP proxy */
 
-#ifndef HTTPS_PROXY_SUPPORT
-  if(proxytype == CURLPROXY_HTTPS) {
-    failf(data, "Unsupported proxy \'%s\'"
-                ", libcurl is built without the HTTPS-proxy support.", proxy);
-    return CURLE_NOT_BUILT_IN;
-  }
+#ifdef USE_SSL
+  if(!Curl_ssl->support_https_proxy)
 #endif
+    if(proxytype == CURLPROXY_HTTPS) {
+      failf(data, "Unsupported proxy \'%s\', libcurl is built without the "
+                  "HTTPS-proxy support.", proxy);
+      return CURLE_NOT_BUILT_IN;
+    }
 
   sockstype = proxytype == CURLPROXY_SOCKS5_HOSTNAME ||
               proxytype == CURLPROXY_SOCKS5 ||
@@ -5133,11 +5202,14 @@ static CURLcode parse_proxy(struct Curl_easy *data,
       conn->port = port;
   }
   else {
-    if(proxyptr[0]=='/')
+    if(proxyptr[0]=='/') {
       /* If the first character in the proxy string is a slash, fail
          immediately. The following code will otherwise clear the string which
          will lead to code running as if no proxy was set! */
+      Curl_safefree(proxyuser);
+      Curl_safefree(proxypasswd);
       return CURLE_COULDNT_RESOLVE_PROXY;
+    }
 
     /* without a port number after the host name, some people seem to use
        a slash so we strip everything from the first slash */
@@ -5280,22 +5352,21 @@ static CURLcode create_conn_helper_init_proxy(struct connectdata *conn)
     }
   }
 
-  no_proxy = curl_getenv("no_proxy");
-  if(!no_proxy)
-    no_proxy = curl_getenv("NO_PROXY");
+  if(!data->set.str[STRING_NOPROXY]) {
+    no_proxy = curl_getenv("no_proxy");
+    if(!no_proxy)
+      no_proxy = curl_getenv("NO_PROXY");
+  }
 
-  if(check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY]) ||
-     (!data->set.str[STRING_NOPROXY] &&
-      check_noproxy(conn->host.name, no_proxy))) {
+  if(check_noproxy(conn->host.name, data->set.str[STRING_NOPROXY] ?
+      data->set.str[STRING_NOPROXY] : no_proxy)) {
     Curl_safefree(proxy);
     Curl_safefree(socksproxy);
   }
-  else if(!proxy && !socksproxy)
 #ifndef CURL_DISABLE_HTTP
+  else if(!proxy && !socksproxy)
     /* if the host is not in the noproxy list, detect proxy. */
     proxy = detect_proxy(conn);
-#else  /* !CURL_DISABLE_HTTP */
-    proxy = NULL;
 #endif /* CURL_DISABLE_HTTP */
 
   Curl_safefree(no_proxy);
@@ -5348,12 +5419,15 @@ static CURLcode create_conn_helper_init_proxy(struct connectdata *conn)
       result = CURLE_UNSUPPORTED_PROTOCOL;
       goto out;
 #else
-      /* force this connection's protocol to become HTTP if not already
-         compatible - if it isn't tunneling through */
-      if(!(conn->handler->protocol & PROTO_FAMILY_HTTP) &&
-         !conn->bits.tunnel_proxy)
-        conn->handler = &Curl_handler_http;
-
+      /* force this connection's protocol to become HTTP if compatible */
+      if(!(conn->handler->protocol & PROTO_FAMILY_HTTP)) {
+        if((conn->handler->flags & PROTOPT_PROXY_AS_HTTP) &&
+           !conn->bits.tunnel_proxy)
+          conn->handler = &Curl_handler_http;
+        else
+          /* if not converting to HTTP over the proxy, enforce tunneling */
+          conn->bits.tunnel_proxy = TRUE;
+      }
       conn->bits.httpproxy = TRUE;
 #endif
     }
@@ -5740,7 +5814,7 @@ static CURLcode parse_remote_port(struct Curl_easy *data,
     char *rest;
     long port;
 
-    port=strtol(portptr+1, &rest, 10);  /* Port number must be decimal */
+    port = strtol(portptr + 1, &rest, 10);  /* Port number must be decimal */
 
     if((port < 0) || (port > 0xffff)) {
       /* Single unix standard says port numbers are 16 bits long */
@@ -6096,7 +6170,7 @@ static CURLcode resolve_server(struct Curl_easy *data,
                                struct connectdata *conn,
                                bool *async)
 {
-  CURLcode result=CURLE_OK;
+  CURLcode result = CURLE_OK;
   time_t timeout_ms = Curl_timeleft(data, NULL, TRUE);
 
   /*************************************************************
@@ -6259,11 +6333,10 @@ static void reuse_conn(struct connectdata *old_conn,
   free_fixed_hostname(&conn->conn_to_host);
   Curl_safefree(conn->host.rawalloc);
   Curl_safefree(conn->conn_to_host.rawalloc);
-  conn->host=old_conn->host;
-  conn->bits.conn_to_host = old_conn->bits.conn_to_host;
+  conn->host = old_conn->host;
   conn->conn_to_host = old_conn->conn_to_host;
-  conn->bits.conn_to_port = old_conn->bits.conn_to_port;
   conn->conn_to_port = old_conn->conn_to_port;
+  conn->remote_port = old_conn->remote_port;
 
   /* persist connection info in session handle */
   Curl_persistconninfo(conn);
@@ -6362,9 +6435,9 @@ static CURLcode create_conn(struct Curl_easy *data,
    * other parts of the code will rely on this fact
    ***********************************************************/
 #define LEAST_PATH_ALLOC 256
-  urllen=strlen(data->change.url);
+  urllen = strlen(data->change.url);
   if(urllen < LEAST_PATH_ALLOC)
-    urllen=LEAST_PATH_ALLOC;
+    urllen = LEAST_PATH_ALLOC;
 
   /*
    * We malloc() the buffers below urllen+2 to make room for 2 possibilities:
@@ -6375,14 +6448,14 @@ static CURLcode create_conn(struct Curl_easy *data,
   Curl_safefree(data->state.pathbuffer);
   data->state.path = NULL;
 
-  data->state.pathbuffer = malloc(urllen+2);
+  data->state.pathbuffer = malloc(urllen + 2);
   if(NULL == data->state.pathbuffer) {
     result = CURLE_OUT_OF_MEMORY; /* really bad error */
     goto out;
   }
   data->state.path = data->state.pathbuffer;
 
-  conn->host.rawalloc = malloc(urllen+2);
+  conn->host.rawalloc = malloc(urllen + 2);
   if(NULL == conn->host.rawalloc) {
     Curl_safefree(data->state.pathbuffer);
     data->state.path = NULL;
@@ -7015,7 +7088,7 @@ CURLcode Curl_init_do(struct Curl_easy *data, struct connectdata *conn)
 
   k->buf = data->state.buffer;
   k->hbufp = data->state.headerbuff;
-  k->ignorebody=FALSE;
+  k->ignorebody = FALSE;
 
   Curl_speedinit(data);
 
diff --git a/lib/urldata.h b/lib/urldata.h
index d4a4a98..66e4596 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -82,75 +82,6 @@
 #include "cookie.h"
 #include "formdata.h"
 
-#ifdef USE_OPENSSL
-#include <openssl/ssl.h>
-#ifdef HAVE_OPENSSL_ENGINE_H
-#include <openssl/engine.h>
-#endif
-#endif /* USE_OPENSSL */
-
-#ifdef USE_GNUTLS
-#include <gnutls/gnutls.h>
-#endif
-
-#ifdef USE_MBEDTLS
-
-#include <mbedtls/ssl.h>
-#include <mbedtls/version.h>
-#include <mbedtls/entropy.h>
-#include <mbedtls/ctr_drbg.h>
-
-#elif defined USE_POLARSSL
-
-#include <polarssl/ssl.h>
-#include <polarssl/version.h>
-#if POLARSSL_VERSION_NUMBER<0x01010000
-#include <polarssl/havege.h>
-#else
-#include <polarssl/entropy.h>
-#include <polarssl/ctr_drbg.h>
-#endif /* POLARSSL_VERSION_NUMBER<0x01010000 */
-
-#endif /* USE_POLARSSL */
-
-#ifdef USE_CYASSL
-#undef OCSP_REQUEST  /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */
-#undef OCSP_RESPONSE /* avoid cyassl/openssl/ssl.h clash with wincrypt.h */
-#include <cyassl/openssl/ssl.h>
-#endif
-
-#ifdef USE_NSS
-#include <nspr.h>
-#include <pk11pub.h>
-#endif
-
-#ifdef USE_GSKIT
-#include <gskssl.h>
-#endif
-
-#ifdef USE_AXTLS
-#include <axTLS/config.h>
-#include <axTLS/ssl.h>
-#undef malloc
-#undef calloc
-#undef realloc
-#endif /* USE_AXTLS */
-
-#if defined(USE_SCHANNEL) || defined(USE_WINDOWS_SSPI)
-#include "curl_sspi.h"
-#endif
-#ifdef USE_SCHANNEL
-#include <schnlsp.h>
-#include <schannel.h>
-#endif
-
-#ifdef USE_DARWINSSL
-#include <Security/Security.h>
-/* For some reason, when building for iOS, the omnibus header above does
- * not include SecureTransport.h as of iOS SDK 5.1. */
-#include <Security/SecureTransport.h>
-#endif
-
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
@@ -172,6 +103,7 @@
 #include "hash.h"
 #include "splay.h"
 
+#include "mime.h"
 #include "imap.h"
 #include "pop3.h"
 #include "smtp.h"
@@ -240,20 +172,6 @@ enum protection_level {
 };
 #endif
 
-#ifdef USE_SCHANNEL
-/* Structs to store Schannel handles */
-struct curl_schannel_cred {
-  CredHandle cred_handle;
-  TimeStamp time_stamp;
-  int refcount;
-};
-
-struct curl_schannel_ctxt {
-  CtxtHandle ctxt_handle;
-  TimeStamp time_stamp;
-};
-#endif
-
 /* enum for the nonblocking SSL connection state machine */
 typedef enum {
   ssl_connect_1,
@@ -270,6 +188,9 @@ typedef enum {
   ssl_connection_complete
 } ssl_connection_state;
 
+/* SSL backend-specific data; declared differently by each SSL backend */
+struct ssl_backend_data;
+
 /* struct for data related to each SSL connection */
 struct ssl_connect_data {
   /* Use ssl encrypted communications TRUE/FALSE, not necessarily using it atm
@@ -278,78 +199,8 @@ struct ssl_connect_data {
   bool use;
   ssl_connection_state state;
   ssl_connect_state connecting_state;
-#if defined(USE_OPENSSL)
-  /* these ones requires specific SSL-types */
-  SSL_CTX* ctx;
-  SSL*     handle;
-  X509*    server_cert;
-#elif defined(USE_GNUTLS)
-  gnutls_session_t session;
-  gnutls_certificate_credentials_t cred;
-#ifdef USE_TLS_SRP
-  gnutls_srp_client_credentials_t srp_client_cred;
-#endif
-#elif defined(USE_MBEDTLS)
-  mbedtls_ctr_drbg_context ctr_drbg;
-  mbedtls_entropy_context entropy;
-  mbedtls_ssl_context ssl;
-  int server_fd;
-  mbedtls_x509_crt cacert;
-  mbedtls_x509_crt clicert;
-  mbedtls_x509_crl crl;
-  mbedtls_pk_context pk;
-  mbedtls_ssl_config config;
-  const char *protocols[3];
-#elif defined(USE_POLARSSL)
-  ctr_drbg_context ctr_drbg;
-  entropy_context entropy;
-  ssl_context ssl;
-  int server_fd;
-  x509_crt cacert;
-  x509_crt clicert;
-  x509_crl crl;
-  rsa_context rsa;
-#elif defined(USE_CYASSL)
-  SSL_CTX* ctx;
-  SSL*     handle;
-#elif defined(USE_NSS)
-  PRFileDesc *handle;
-  char *client_nickname;
-  struct Curl_easy *data;
-  struct curl_llist obj_list;
-  PK11GenericObject *obj_clicert;
-#elif defined(USE_GSKIT)
-  gsk_handle handle;
-  int iocport;
-  int localfd;
-  int remotefd;
-#elif defined(USE_AXTLS)
-  SSL_CTX* ssl_ctx;
-  SSL*     ssl;
-#elif defined(USE_SCHANNEL)
-  struct curl_schannel_cred *cred;
-  struct curl_schannel_ctxt *ctxt;
-  SecPkgContext_StreamSizes stream_sizes;
-  size_t encdata_length, decdata_length;
-  size_t encdata_offset, decdata_offset;
-  unsigned char *encdata_buffer, *decdata_buffer;
-  /* encdata_is_incomplete: if encdata contains only a partial record that
-     can't be decrypted without another Curl_read_plain (that is, status is
-     SEC_E_INCOMPLETE_MESSAGE) then set this true. after Curl_read_plain writes
-     more bytes into encdata then set this back to false. */
-  bool encdata_is_incomplete;
-  unsigned long req_flags, ret_flags;
-  CURLcode recv_unrecoverable_err; /* schannel_recv had an unrecoverable err */
-  bool recv_sspi_close_notify; /* true if connection closed by close_notify */
-  bool recv_connection_closed; /* true if connection closed, regardless how */
-  bool use_alpn; /* true if ALPN is used for this connection */
-#elif defined(USE_DARWINSSL)
-  SSLContextRef ssl_ctx;
-  curl_socket_t ssl_sockfd;
-  bool ssl_direction; /* true if writing, false if reading */
-  size_t ssl_write_buffered_length;
-#elif defined(USE_SSL)
-#error "SSL backend specific information missing from ssl_connect_data"
+#if defined(USE_SSL)
+  struct ssl_backend_data *backend;
 #endif
 };
 
@@ -359,13 +210,13 @@ struct ssl_primary_config {
   bool verifypeer;       /* set TRUE if this is desired */
   bool verifyhost;       /* set TRUE if CN/SAN must match hostname */
   bool verifystatus;     /* set TRUE if certificate status must be checked */
+  bool sessionid;        /* cache session IDs or not */
   char *CApath;          /* certificate dir (doesn't work on windows) */
   char *CAfile;          /* certificate to verify peer against */
   char *clientcert;
   char *random_file;     /* path to file containing "random" data */
   char *egdsocket;       /* path to file containing the EGD daemon socket */
   char *cipher_list;     /* list of ciphers to use */
-  bool sessionid;        /* cache session IDs or not */
 };
 
 struct ssl_config_data {
@@ -411,12 +262,20 @@ struct curl_ssl_session {
   struct ssl_primary_config ssl_config; /* setup for this session */
 };
 
+#ifdef USE_WINDOWS_SSPI
+#include "curl_sspi.h"
+#endif
+
 /* Struct used for Digest challenge-response authentication */
 struct digestdata {
 #if defined(USE_WINDOWS_SSPI)
   BYTE *input_token;
   size_t input_token_len;
   CtxtHandle *http_context;
+  /* copy of user/passwd used to make the identity for http_context.
+     either may be NULL. */
+  char *user;
+  char *passwd;
 #else
   char *nonce;
   char *cnonce;
@@ -438,10 +297,6 @@ typedef enum {
   NTLMSTATE_LAST
 } curlntlm;
 
-#ifdef USE_WINDOWS_SSPI
-#include "curl_sspi.h"
-#endif
-
 #if defined(CURL_DOES_CONVERSIONS) && defined(HAVE_ICONV)
 #include <iconv.h>
 #endif
@@ -678,8 +533,8 @@ struct SingleRequest {
                              100 reply (without a following second response
                              code) result in a CURLE_GOT_NOTHING error code */
 
-  struct timeval start;         /* transfer started at this time */
-  struct timeval now;           /* current time */
+  struct curltime start;         /* transfer started at this time */
+  struct curltime now;           /* current time */
   bool header;                  /* incoming data has HTTP header */
   enum {
     HEADER_NORMAL,              /* no bad header at all */
@@ -701,7 +556,7 @@ struct SingleRequest {
                                    Content-Range: header */
   int httpcode;                 /* error code from the 'HTTP/1.? XXX' or
                                    'RTSP/1.? XXX' line */
-  struct timeval start100;      /* time stamp to wait for the 100 code from */
+  struct curltime start100;      /* time stamp to wait for the 100 code from */
   enum expect100 exp100;        /* expect 100 continue state */
   enum upgrade101 upgr101;      /* 101 upgrade state */
 
@@ -829,6 +684,12 @@ struct Curl_handler {
   CURLcode (*readwrite)(struct Curl_easy *data, struct connectdata *conn,
                         ssize_t *nread, bool *readmore);
 
+  /* This function can perform various checks on the connection. See
+     CONNCHECK_* for more information about the checks that can be performed,
+     and CONNRESULT_* for the results that can be returned. */
+  unsigned int (*connection_check)(struct connectdata *conn,
+                                   unsigned int checks_to_perform);
+
   long defport;           /* Default port. */
   unsigned int protocol;  /* See CURLPROTO_* - this needs to be the single
                              specific protocol bit */
@@ -855,6 +716,15 @@ struct Curl_handler {
 #define PROTOPT_STREAM (1<<9) /* a protocol with individual logical streams */
 #define PROTOPT_URLOPTIONS (1<<10) /* allow options part in the userinfo field
                                       of the URL */
+#define PROTOPT_PROXY_AS_HTTP (1<<11) /* allow this non-HTTP scheme over a
+                                         HTTP proxy as HTTP proxies may know
+                                         this protocol and act as a gateway */
+
+#define CONNCHECK_NONE 0                 /* No checks */
+#define CONNCHECK_ISDEAD (1<<0)          /* Check if the connection is dead. */
+
+#define CONNRESULT_NONE 0                /* No extra information. */
+#define CONNRESULT_DEAD (1<<0)           /* The connection is dead. */
 
 /* return the count of bytes sent, or -1 on error */
 typedef ssize_t (Curl_send)(struct connectdata *conn, /* connection data */
@@ -892,6 +762,24 @@ struct proxy_info {
   char *passwd;  /* proxy password string, allocated */
 };
 
+#define CONNECT_BUFFER_SIZE 16384
+
+/* struct for HTTP CONNECT state data */
+struct http_connect_state {
+  char connect_buffer[CONNECT_BUFFER_SIZE];
+  int perline; /* count bytes per line */
+  int keepon;
+  char *line_start;
+  char *ptr; /* where to store more data */
+  curl_off_t cl; /* size of content to read and ignore */
+  bool chunked_encoding;
+  enum {
+    TUNNEL_INIT,    /* init/default/no tunnel state */
+    TUNNEL_CONNECT, /* CONNECT has been sent off */
+    TUNNEL_COMPLETE /* CONNECT response received completely */
+  } tunnel_state;
+};
+
 /*
  * The connectdata struct contains all fields and variables that should be
  * unique for an entire connection.
@@ -983,8 +871,8 @@ struct connectdata {
   int httpversion;        /* the HTTP version*10 reported by the server */
   int rtspversion;        /* the RTSP version*10 reported by the server */
 
-  struct timeval now;     /* "current" time */
-  struct timeval created; /* creation time */
+  struct curltime now;     /* "current" time */
+  struct curltime created; /* creation time */
   curl_socket_t sock[2]; /* two sockets, the second is used for the data
                             transfer when doing FTP */
   curl_socket_t tempsock[2]; /* temporary sockets for happy eyeballs */
@@ -1007,7 +895,7 @@ struct connectdata {
  /* connecttime: when connect() is called on the current IP address. Used to
     be able to track when to move on to try next IP - but only when the multi
     interface is used. */
-  struct timeval connecttime;
+  struct curltime connecttime;
   /* The two fields below get set in Curl_connecthost */
   int num_addr; /* number of addresses to try to connect to */
   time_t timeoutms_per_addr; /* how long time in milliseconds to spend on
@@ -1134,22 +1022,24 @@ struct connectdata {
   char *localdev;
   unsigned short localport;
   int localportrange;
-
-  /* tunnel as in tunnel through a HTTP proxy with CONNECT */
-  enum {
-    TUNNEL_INIT,    /* init/default/no tunnel state */
-    TUNNEL_CONNECT, /* CONNECT has been sent off */
-    TUNNEL_COMPLETE /* CONNECT response received completely */
-  } tunnel_state[2]; /* two separate ones to allow FTP */
+  struct http_connect_state *connect_state; /* for HTTP CONNECT */
   struct connectbundle *bundle; /* The bundle we are member of */
-
   int negnpn; /* APLN or NPN TLS negotiated protocol, CURL_HTTP_VERSION* */
-  char *connect_buffer; /* for CONNECT business */
 
 #ifdef USE_UNIX_SOCKETS
   char *unix_domain_socket;
   bool abstract_unix_socket;
 #endif
+
+#ifdef USE_SSL
+  /*
+   * To avoid multiple malloc() calls, the ssl_connect_data structures
+   * associated with a connectdata struct are allocated in the same block
+   * as the latter. This field forces alignment to an 8-byte boundary so
+   * that this all works.
+   */
+  long long *align_data__do_not_use;
+#endif
 };
 
 /* The end of connectdata. */
@@ -1213,34 +1103,36 @@ struct Progress {
   int width; /* screen width at download start */
   int flags; /* see progress.h */
 
-  double timespent;
+  time_t timespent;
 
   curl_off_t dlspeed;
   curl_off_t ulspeed;
 
-  double t_nslookup;
-  double t_connect;
-  double t_appconnect;
-  double t_pretransfer;
-  double t_starttransfer;
-  double t_redirect;
+  time_t t_nslookup;
+  time_t t_connect;
+  time_t t_appconnect;
+  time_t t_pretransfer;
+  time_t t_starttransfer;
+  time_t t_redirect;
 
-  struct timeval start;
-  struct timeval t_startsingle;
-  struct timeval t_startop;
-  struct timeval t_acceptdata;
+  struct curltime start;
+  struct curltime t_startsingle;
+  struct curltime t_startop;
+  struct curltime t_acceptdata;
+
+  bool is_t_startransfer_set;
 
   /* upload speed limit */
-  struct timeval ul_limit_start;
+  struct curltime ul_limit_start;
   curl_off_t ul_limit_size;
   /* download speed limit */
-  struct timeval dl_limit_start;
+  struct curltime dl_limit_start;
   curl_off_t dl_limit_size;
 
-#define CURR_TIME (5+1) /* 6 entries for 5 seconds */
+#define CURR_TIME (5 + 1) /* 6 entries for 5 seconds */
 
   curl_off_t speeder[ CURR_TIME ];
-  struct timeval speeder_time[ CURR_TIME ];
+  struct curltime speeder_time[ CURR_TIME ];
   int speeder_c;
 };
 
@@ -1249,8 +1141,10 @@ typedef enum {
   HTTPREQ_GET,
   HTTPREQ_POST,
   HTTPREQ_POST_FORM, /* we make a difference internally */
+  HTTPREQ_POST_MIME, /* we make a difference internally */
   HTTPREQ_PUT,
   HTTPREQ_HEAD,
+  HTTPREQ_OPTIONS,
   HTTPREQ_CUSTOM,
   HTTPREQ_LAST /* last in list */
 } Curl_HttpReq;
@@ -1334,7 +1228,7 @@ typedef enum {
  */
 struct time_node {
   struct curl_llist_element list;
-  struct timeval time;
+  struct curltime time;
   expire_id eid;
 };
 
@@ -1349,7 +1243,7 @@ struct UrlState {
   bool multi_owned_by_easy;
 
   /* buffers to store authentication data in, as parsed from input options */
-  struct timeval keeps_speed; /* for the progress meter really */
+  struct curltime keeps_speed; /* for the progress meter really */
 
   struct connectdata *lastconnect; /* The last connection, NULL if undefined */
 
@@ -1357,7 +1251,7 @@ struct UrlState {
   size_t headersize;   /* size of the allocation */
 
   char *buffer; /* download buffer */
-  char uploadbuffer[UPLOAD_BUFSIZE+1]; /* upload buffer */
+  char uploadbuffer[UPLOAD_BUFSIZE + 1]; /* upload buffer */
   curl_off_t current_speed;  /* the ProgressShow() function sets this,
                                 bytes / second */
   bool this_is_a_follow; /* this is a followed Location: request */
@@ -1401,9 +1295,10 @@ struct UrlState {
                      ares_channel f.e. */
 
 #if defined(USE_OPENSSL) && defined(HAVE_OPENSSL_ENGINE_H)
-  ENGINE *engine;
+  /* void instead of ENGINE to avoid bleeding OpenSSL into this header */
+  void *engine;
 #endif /* USE_OPENSSL */
-  struct timeval expiretime; /* set this with Curl_expire() only */
+  struct curltime expiretime; /* set this with Curl_expire() only */
   struct Curl_tree timenode; /* for the splay stuff */
   struct curl_llist timeoutlist; /* list of pending timeouts */
   struct time_node expires[EXPIRE_LAST]; /* nodes for each expire type */
@@ -1574,7 +1469,7 @@ enum dupstring {
 #ifdef USE_UNIX_SOCKETS
   STRING_UNIX_SOCKET_PATH,      /* path to Unix socket, if used */
 #endif
-
+  STRING_TARGET,                /* CURLOPT_REQUEST_TARGET */
   /* -- end of zero-terminated strings -- */
 
   STRING_LASTZEROTERMINATED,
@@ -1601,6 +1496,7 @@ struct UserDefined {
   long use_port;     /* which port to use (when not using default) */
   unsigned long httpauth;  /* kind of HTTP authentication to use (bitmask) */
   unsigned long proxyauth; /* kind of proxy authentication to use (bitmask) */
+  unsigned long socks5auth;/* kind of SOCKS5 authentication to use (bitmask) */
   long followlocation; /* as in HTTP Location: */
   long maxredirs;    /* maximum no. of http(s) redirects to follow, set to -1
                         for infinity */
@@ -1663,7 +1559,8 @@ struct UserDefined {
   curl_off_t set_resume_from;  /* continue [ftp] transfer from here */
   struct curl_slist *headers; /* linked list of extra headers */
   struct curl_slist *proxyheaders; /* linked list of extra CONNECT headers */
-  struct curl_httppost *httppost;  /* linked list of POST data */
+  struct curl_httppost *httppost;  /* linked list of old POST data */
+  curl_mimepart mimepost;  /* MIME/POST data. */
   bool sep_headers;     /* handle host and proxy headers separately */
   bool cookiesession;   /* new cookie session? */
   bool crlf;            /* convert crlf on ftp upload(?) */
@@ -1685,6 +1582,7 @@ struct UserDefined {
   Curl_HttpReq httpreq;   /* what kind of HTTP request (if any) is this */
   long httpversion; /* when non-zero, a specific HTTP version requested to
                        be used in the library's request(s) */
+  bool strip_path_slash; /* strip off initial slash from path */
   struct ssl_config_data ssl;  /* user defined SSL stuff */
   struct ssl_config_data proxy_ssl;  /* user defined SSL stuff for proxy */
   struct ssl_general_config general_ssl; /* general user defined SSL stuff */
@@ -1708,6 +1606,7 @@ struct UserDefined {
 
   curl_sshkeycallback ssh_keyfunc; /* key matching callback */
   void *ssh_keyfunc_userp;         /* custom pointer to callback */
+  bool ssh_compression;            /* enable SSH compression */
 
 /* Here follows boolean settings that define how to behave during
    this session. They are STATIC, set by libcurl users or at least initially
diff --git a/lib/vauth/digest_sspi.c b/lib/vauth/digest_sspi.c
index 0bd9444..a3f96ed 100644
--- a/lib/vauth/digest_sspi.c
+++ b/lib/vauth/digest_sspi.c
@@ -352,8 +352,8 @@ CURLcode Curl_auth_decode_digest_http_message(const char *chlg,
       if(!Curl_auth_digest_get_pair(p, value, content, &p))
         break;
 
-      if(Curl_strcasecompare(value, "stale")
-         && Curl_strcasecompare(content, "true")) {
+      if(strcasecompare(value, "stale") &&
+         strcasecompare(content, "true")) {
         stale = true;
         break;
       }
@@ -438,6 +438,20 @@ CURLcode Curl_auth_create_digest_http_message(struct Curl_easy *data,
     return CURLE_OUT_OF_MEMORY;
   }
 
+  /* If the user/passwd that was used to make the identity for http_context
+     has changed then delete that context. */
+  if((userp && !digest->user) || (!userp && digest->user) ||
+     (passwdp && !digest->passwd) || (!passwdp && digest->passwd) ||
+     (userp && digest->user && strcmp(userp, digest->user)) ||
+     (passwdp && digest->passwd && strcmp(passwdp, digest->passwd))) {
+    if(digest->http_context) {
+      s_pSecFn->DeleteSecurityContext(digest->http_context);
+      Curl_safefree(digest->http_context);
+    }
+    Curl_safefree(digest->user);
+    Curl_safefree(digest->passwd);
+  }
+
   if(digest->http_context) {
     chlg_desc.ulVersion    = SECBUFFER_VERSION;
     chlg_desc.cBuffers     = 5;
@@ -479,6 +493,10 @@ CURLcode Curl_auth_create_digest_http_message(struct Curl_easy *data,
     TimeStamp expiry; /* For Windows 9x compatibility of SSPI calls */
     TCHAR *spn;
 
+    /* free the copy of user/passwd used to make the previous identity */
+    Curl_safefree(digest->user);
+    Curl_safefree(digest->passwd);
+
     if(userp && *userp) {
       /* Populate our identity structure */
       if(Curl_create_sspi_identity(userp, passwdp, &identity)) {
@@ -500,6 +518,25 @@ CURLcode Curl_auth_create_digest_http_message(struct Curl_easy *data,
       /* Use the current Windows user */
       p_identity = NULL;
 
+    if(userp) {
+      digest->user = strdup(userp);
+
+      if(!digest->user) {
+        free(output_token);
+        return CURLE_OUT_OF_MEMORY;
+      }
+    }
+
+    if(passwdp) {
+      digest->passwd = strdup(passwdp);
+
+      if(!digest->passwd) {
+        free(output_token);
+        Curl_safefree(digest->user);
+        return CURLE_OUT_OF_MEMORY;
+      }
+    }
+
     /* Acquire our credentials handle */
     status = s_pSecFn->AcquireCredentialsHandle(NULL,
                                                 (TCHAR *) TEXT(SP_NAME_DIGEST),
@@ -623,6 +660,10 @@ void Curl_auth_digest_cleanup(struct digestdata *digest)
     s_pSecFn->DeleteSecurityContext(digest->http_context);
     Curl_safefree(digest->http_context);
   }
+
+  /* Free the copy of user/passwd used to make the identity for http_context */
+  Curl_safefree(digest->user);
+  Curl_safefree(digest->passwd);
 }
 
 #endif /* USE_WINDOWS_SSPI && !CURL_DISABLE_CRYPTO_AUTH */
diff --git a/lib/vauth/ntlm.c b/lib/vauth/ntlm.c
index 4219645..50d9222 100644
--- a/lib/vauth/ntlm.c
+++ b/lib/vauth/ntlm.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -44,7 +44,9 @@
 #include "rand.h"
 #include "vtls/vtls.h"
 
-#ifdef USE_NSS
+/* SSL backend-specific #if branches in this file must be kept in the order
+   documented in curl_ntlm_core. */
+#if defined(NTLM_NEEDS_NSS_INIT)
 #include "vtls/nssg.h" /* for Curl_nss_force_init() */
 #endif
 
@@ -272,7 +274,7 @@ CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
   unsigned char *type2 = NULL;
   size_t type2_len = 0;
 
-#if defined(USE_NSS)
+#if defined(NTLM_NEEDS_NSS_INIT)
   /* Make sure the crypto backend is initialized */
   result = Curl_nss_force_init(data);
   if(result)
@@ -350,6 +352,7 @@ static void unicodecpy(unsigned char *dest, const char *src, size_t length)
  *
  * Parameters:
  *
+ * data    [in]     - The session handle.
  * userp   [in]     - The user name in the format User or Domain\User.
  * passdwp [in]     - The user's password.
  * ntlm    [in/out] - The NTLM data struct being used and modified.
@@ -359,7 +362,8 @@ static void unicodecpy(unsigned char *dest, const char *src, size_t length)
  *
  * Returns CURLE_OK on success.
  */
-CURLcode Curl_auth_create_ntlm_type1_message(const char *userp,
+CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
+                                             const char *userp,
                                              const char *passwdp,
                                              struct ntlmdata *ntlm,
                                              char **outptr, size_t *outlen)
@@ -458,7 +462,7 @@ CURLcode Curl_auth_create_ntlm_type1_message(const char *userp,
   });
 
   /* Return with binary blob encoded into base64 */
-  return Curl_base64_encode(NULL, (char *)ntlmbuf, size, outptr, outlen);
+  return Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
 }
 
 /*
@@ -827,7 +831,7 @@ CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
     return CURLE_CONV_FAILED;
 
   /* Return with binary blob encoded into base64 */
-  result = Curl_base64_encode(NULL, (char *)ntlmbuf, size, outptr, outlen);
+  result = Curl_base64_encode(data, (char *)ntlmbuf, size, outptr, outlen);
 
   Curl_auth_ntlm_cleanup(ntlm);
 
diff --git a/lib/vauth/ntlm_sspi.c b/lib/vauth/ntlm_sspi.c
index c330517..e748ce3 100644
--- a/lib/vauth/ntlm_sspi.c
+++ b/lib/vauth/ntlm_sspi.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -29,6 +29,7 @@
 #include "vauth/vauth.h"
 #include "urldata.h"
 #include "curl_base64.h"
+#include "curl_ntlm_core.h"
 #include "warnless.h"
 #include "curl_multibyte.h"
 #include "sendf.h"
@@ -66,6 +67,7 @@ bool Curl_auth_is_ntlm_supported(void)
  *
  * Parameters:
  *
+ * data    [in]     - The session handle.
  * userp   [in]     - The user name in the format User or Domain\User.
  * passdwp [in]     - The user's password.
  * ntlm    [in/out] - The NTLM data struct being used and modified.
@@ -75,7 +77,8 @@ bool Curl_auth_is_ntlm_supported(void)
  *
  * Returns CURLE_OK on success.
  */
-CURLcode Curl_auth_create_ntlm_type1_message(const char *userp,
+CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
+                                             const char *userp,
                                              const char *passwdp,
                                              struct ntlmdata *ntlm,
                                              char **outptr, size_t *outlen)
@@ -166,7 +169,7 @@ CURLcode Curl_auth_create_ntlm_type1_message(const char *userp,
     return CURLE_RECV_ERROR;
 
   /* Base64 encode the response */
-  return Curl_base64_encode(NULL, (char *) ntlm->output_token,
+  return Curl_base64_encode(data, (char *) ntlm->output_token,
                             type_1_buf.cbBuffer, outptr, outlen);
 }
 
diff --git a/lib/vauth/spnego_gssapi.c b/lib/vauth/spnego_gssapi.c
index 8840db8..5196c27 100644
--- a/lib/vauth/spnego_gssapi.c
+++ b/lib/vauth/spnego_gssapi.c
@@ -180,6 +180,10 @@ CURLcode Curl_auth_decode_spnego_message(struct Curl_easy *data,
     return CURLE_OUT_OF_MEMORY;
   }
 
+  /* Free previous token */
+  if(nego->output_token.length && nego->output_token.value)
+    gss_release_buffer(&unused_status, &nego->output_token);
+
   nego->output_token = output_token;
 
   return CURLE_OK;
diff --git a/lib/vauth/vauth.h b/lib/vauth/vauth.h
index 9d61228..dfaf985 100644
--- a/lib/vauth/vauth.h
+++ b/lib/vauth/vauth.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2014 - 2016, Steve Holme, <steve_holme at hotmail.com>.
+ * Copyright (C) 2014 - 2017, Steve Holme, <steve_holme at hotmail.com>.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -119,7 +119,8 @@ void Curl_auth_digest_cleanup(struct digestdata *digest);
 bool Curl_auth_is_ntlm_supported(void);
 
 /* This is used to generate a base64 encoded NTLM type-1 message */
-CURLcode Curl_auth_create_ntlm_type1_message(const char *userp,
+CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
+                                             const char *userp,
                                              const char *passwdp,
                                              struct ntlmdata *ntlm,
                                              char **outptr,
diff --git a/lib/version.c b/lib/version.c
index 3d17768..ebd6006 100644
--- a/lib/version.c
+++ b/lib/version.c
@@ -324,8 +324,8 @@ static curl_version_info_data version_info = {
 #if defined(USE_LIBPSL)
   | CURL_VERSION_PSL
 #endif
-#if defined(HTTPS_PROXY_SUPPORT)
-  | CURL_VERSION_HTTPS_PROXY
+#if defined(CURL_WITH_MULTI_SSL)
+  | CURL_VERSION_MULTI_SSL
 #endif
   ,
   NULL, /* ssl_version */
@@ -355,6 +355,10 @@ curl_version_info_data *curl_version_info(CURLversion stamp)
 #ifdef USE_SSL
   Curl_ssl_version(ssl_buffer, sizeof(ssl_buffer));
   version_info.ssl_version = ssl_buffer;
+  if(Curl_ssl->support_https_proxy)
+    version_info.features |= CURL_VERSION_HTTPS_PROXY;
+  else
+    version_info.features &= ~CURL_VERSION_HTTPS_PROXY;
 #endif
 
 #ifdef HAVE_LIBZ
diff --git a/lib/vtls/axtls.c b/lib/vtls/axtls.c
index f0e3766..6b42708 100644
--- a/lib/vtls/axtls.c
+++ b/lib/vtls/axtls.c
@@ -47,21 +47,12 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
+struct ssl_backend_data {
+  SSL_CTX* ssl_ctx;
+  SSL*     ssl;
+};
 
-/* Global axTLS init, called from Curl_ssl_init() */
-int Curl_axtls_init(void)
-{
-/* axTLS has no global init.  Everything is done through SSL and SSL_CTX
- * structs stored in connectdata structure.  Perhaps can move to axtls.h.
- */
-  return 1;
-}
-
-int Curl_axtls_cleanup(void)
-{
-  /* axTLS has no global cleanup.  Perhaps can move this to axtls.h. */
-  return 1;
-}
+#define BACKEND connssl->backend
 
 static CURLcode map_error_to_curl(int axtls_err)
 {
@@ -120,13 +111,13 @@ static Curl_send axtls_send;
 
 static void free_ssl_structs(struct ssl_connect_data *connssl)
 {
-  if(connssl->ssl) {
-    ssl_free(connssl->ssl);
-    connssl->ssl = NULL;
+  if(BACKEND->ssl) {
+    ssl_free(BACKEND->ssl);
+    BACKEND->ssl = NULL;
   }
-  if(connssl->ssl_ctx) {
-    ssl_ctx_free(connssl->ssl_ctx);
-    connssl->ssl_ctx = NULL;
+  if(BACKEND->ssl_ctx) {
+    ssl_ctx_free(BACKEND->ssl_ctx);
+    BACKEND->ssl_ctx = NULL;
   }
 }
 
@@ -137,6 +128,7 @@ static void free_ssl_structs(struct ssl_connect_data *connssl)
  */
 static CURLcode connect_prep(struct connectdata *conn, int sockindex)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
   SSL_CTX *ssl_ctx;
   SSL *ssl = NULL;
@@ -151,7 +143,7 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
     SSL_SERVER_VERIFY_LATER |
     SSL_CONNECT_IN_PARTS;
 
-  if(conn->ssl[sockindex].state == ssl_connection_complete)
+  if(connssl->state == ssl_connection_complete)
     /* to make us tolerant against being called more than once for the
        same connection */
     return CURLE_OK;
@@ -185,8 +177,8 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  conn->ssl[sockindex].ssl_ctx = ssl_ctx;
-  conn->ssl[sockindex].ssl = NULL;
+  BACKEND->ssl_ctx = ssl_ctx;
+  BACKEND->ssl = NULL;
 
   /* Load the trusted CA cert bundle file */
   if(SSL_CONN_CONFIG(CAfile)) {
@@ -212,7 +204,7 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
 
   /* Load client certificate */
   if(SSL_SET_OPTION(cert)) {
-    i=0;
+    i = 0;
     /* Instead of trying to analyze cert type here, let axTLS try them all. */
     while(cert_types[i] != 0) {
       ssl_fcn_return = ssl_obj_load(ssl_ctx, cert_types[i],
@@ -236,7 +228,7 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
      If a pkcs12 file successfully loaded a cert, then there's nothing to do
      because the key has already been loaded. */
   if(SSL_SET_OPTION(key) && cert_types[i] != SSL_OBJ_PKCS12) {
-    i=0;
+    i = 0;
     /* Instead of trying to analyze key type here, let axTLS try them all. */
     while(key_types[i] != 0) {
       ssl_fcn_return = ssl_obj_load(ssl_ctx, key_types[i],
@@ -281,10 +273,26 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
   if(!ssl)
     ssl = ssl_client_new(ssl_ctx, conn->sock[sockindex], NULL, 0, NULL);
 
-  conn->ssl[sockindex].ssl = ssl;
+  BACKEND->ssl = ssl;
   return CURLE_OK;
 }
 
+static void Curl_axtls_close(struct connectdata *conn, int sockindex)
+{
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+
+  infof(conn->data, "  Curl_axtls_close\n");
+
+    /* line from openssl.c: (void)SSL_shutdown(BACKEND->ssl);
+       axTLS compat layer does nothing for SSL_shutdown */
+
+    /* The following line is from openssl.c.  There seems to be no axTLS
+       equivalent.  ssl_free and ssl_ctx_free close things.
+       SSL_set_connect_state(connssl->handle); */
+
+  free_ssl_structs(connssl);
+}
+
 /*
  * For both blocking and non-blocking connects, this function finalizes the
  * SSL connection.
@@ -292,7 +300,8 @@ static CURLcode connect_prep(struct connectdata *conn, int sockindex)
 static CURLcode connect_finish(struct connectdata *conn, int sockindex)
 {
   struct Curl_easy *data = conn->data;
-  SSL *ssl = conn->ssl[sockindex].ssl;
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  SSL *ssl = BACKEND->ssl;
   const char *peer_CN;
   uint32_t dns_altname_index;
   const char *dns_altname;
@@ -387,7 +396,7 @@ static CURLcode connect_finish(struct connectdata *conn, int sockindex)
   }
 
   /* General housekeeping */
-  conn->ssl[sockindex].state = ssl_connection_complete;
+  connssl->state = ssl_connection_complete;
   conn->recv[sockindex] = axtls_recv;
   conn->send[sockindex] = axtls_send;
 
@@ -409,11 +418,10 @@ static CURLcode connect_finish(struct connectdata *conn, int sockindex)
  * Use axTLS's non-blocking connection feature to open an SSL connection.
  * This is called after a TCP connection is already established.
  */
-CURLcode Curl_axtls_connect_nonblocking(
-    struct connectdata *conn,
-    int sockindex,
-    bool *done)
+static CURLcode Curl_axtls_connect_nonblocking(struct connectdata *conn,
+                                               int sockindex, bool *done)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   CURLcode conn_step;
   int ssl_fcn_return;
   int i;
@@ -421,23 +429,23 @@ CURLcode Curl_axtls_connect_nonblocking(
  *done = FALSE;
   /* connectdata is calloc'd and connecting_state is only changed in this
      function, so this is safe, as the state is effectively initialized. */
-  if(conn->ssl[sockindex].connecting_state == ssl_connect_1) {
+  if(connssl->connecting_state == ssl_connect_1) {
     conn_step = connect_prep(conn, sockindex);
     if(conn_step != CURLE_OK) {
       Curl_axtls_close(conn, sockindex);
       return conn_step;
     }
-    conn->ssl[sockindex].connecting_state = ssl_connect_2;
+    connssl->connecting_state = ssl_connect_2;
   }
 
-  if(conn->ssl[sockindex].connecting_state == ssl_connect_2) {
+  if(connssl->connecting_state == ssl_connect_2) {
     /* Check to make sure handshake was ok. */
-    if(ssl_handshake_status(conn->ssl[sockindex].ssl) != SSL_OK) {
+    if(ssl_handshake_status(BACKEND->ssl) != SSL_OK) {
       /* Loop to perform more work in between sleeps. This is work around the
          fact that axtls does not expose any knowledge about when work needs
          to be performed. This can save ~25% of time on SSL handshakes. */
-      for(i=0; i<5; i++) {
-        ssl_fcn_return = ssl_read(conn->ssl[sockindex].ssl, NULL);
+      for(i = 0; i<5; i++) {
+        ssl_fcn_return = ssl_read(BACKEND->ssl, NULL);
         if(ssl_fcn_return < 0) {
           Curl_axtls_close(conn, sockindex);
           ssl_display_error(ssl_fcn_return); /* goes to stdout. */
@@ -447,10 +455,10 @@ CURLcode Curl_axtls_connect_nonblocking(
       }
     }
     infof(conn->data, "handshake completed successfully\n");
-    conn->ssl[sockindex].connecting_state = ssl_connect_3;
+    connssl->connecting_state = ssl_connect_3;
   }
 
-  if(conn->ssl[sockindex].connecting_state == ssl_connect_3) {
+  if(connssl->connecting_state == ssl_connect_3) {
     conn_step = connect_finish(conn, sockindex);
     if(conn_step != CURLE_OK) {
       Curl_axtls_close(conn, sockindex);
@@ -458,15 +466,15 @@ CURLcode Curl_axtls_connect_nonblocking(
     }
 
     /* Reset connect state */
-    conn->ssl[sockindex].connecting_state = ssl_connect_1;
+    connssl->connecting_state = ssl_connect_1;
 
     *done = TRUE;
     return CURLE_OK;
   }
 
   /* Unrecognized state.  Things are very bad. */
-  conn->ssl[sockindex].state  = ssl_connection_none;
-  conn->ssl[sockindex].connecting_state = ssl_connect_1;
+  connssl->state  = ssl_connection_none;
+  connssl->connecting_state = ssl_connect_1;
   /* Return value perhaps not strictly correct, but distinguishes the issue.*/
   return CURLE_BAD_FUNCTION_ARGUMENT;
 }
@@ -476,15 +484,13 @@ CURLcode Curl_axtls_connect_nonblocking(
  * This function is called after the TCP connect has completed. Setup the TLS
  * layer and do all necessary magic for a blocking connect.
  */
-CURLcode
-Curl_axtls_connect(struct connectdata *conn,
-                  int sockindex)
-
+static CURLcode Curl_axtls_connect(struct connectdata *conn, int sockindex)
 {
   struct Curl_easy *data = conn->data;
   CURLcode conn_step = connect_prep(conn, sockindex);
   int ssl_fcn_return;
-  SSL *ssl = conn->ssl[sockindex].ssl;
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  SSL *ssl = BACKEND->ssl;
   long timeout_ms;
 
   if(conn_step != CURLE_OK) {
@@ -530,8 +536,9 @@ static ssize_t axtls_send(struct connectdata *conn,
                           size_t len,
                           CURLcode *err)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   /* ssl_write() returns 'int' while write() and send() returns 'size_t' */
-  int rc = ssl_write(conn->ssl[sockindex].ssl, mem, (int)len);
+  int rc = ssl_write(BACKEND->ssl, mem, (int)len);
 
   infof(conn->data, "  axtls_send\n");
 
@@ -544,27 +551,11 @@ static ssize_t axtls_send(struct connectdata *conn,
   return rc;
 }
 
-void Curl_axtls_close(struct connectdata *conn, int sockindex)
-{
-  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-
-  infof(conn->data, "  Curl_axtls_close\n");
-
-    /* line from openssl.c: (void)SSL_shutdown(connssl->ssl);
-       axTLS compat layer does nothing for SSL_shutdown */
-
-    /* The following line is from openssl.c.  There seems to be no axTLS
-       equivalent.  ssl_free and ssl_ctx_free close things.
-       SSL_set_connect_state(connssl->handle); */
-
-  free_ssl_structs(connssl);
-}
-
 /*
  * This function is called to shut down the SSL layer but keep the
  * socket open (CCC - Clear Command Channel)
  */
-int Curl_axtls_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_axtls_shutdown(struct connectdata *conn, int sockindex)
 {
   /* Outline taken from openssl.c since functions are in axTLS compat layer.
      axTLS's error set is much smaller, so a lot of error-handling was removed.
@@ -584,17 +575,17 @@ int Curl_axtls_shutdown(struct connectdata *conn, int sockindex)
 
   /* axTLS compat layer does nothing for SSL_shutdown, so we do nothing too
   if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
-      (void)SSL_shutdown(connssl->ssl);
+      (void)SSL_shutdown(BACKEND->ssl);
   */
 
-  if(connssl->ssl) {
+  if(BACKEND->ssl) {
     int what = SOCKET_READABLE(conn->sock[sockindex], SSL_SHUTDOWN_TIMEOUT);
     if(what > 0) {
       /* Something to read, let's do it and hope that it is the close
          notify alert from the server.  buf is managed internally by
          axTLS and will be released upon calling ssl_free via
          free_ssl_structs. */
-      nread = (ssize_t)ssl_read(connssl->ssl, &buf);
+      nread = (ssize_t)ssl_read(BACKEND->ssl, &buf);
 
       if(nread < SSL_OK) {
         failf(data, "close notify alert not received during shutdown");
@@ -630,7 +621,7 @@ static ssize_t axtls_recv(struct connectdata *conn, /* connection data */
 
   *err = CURLE_OK;
   if(connssl) {
-    ret = ssl_read(connssl->ssl, &read_buf);
+    ret = ssl_read(BACKEND->ssl, &read_buf);
     if(ret > SSL_OK) {
       /* ssl_read returns SSL_OK if there is more data to read, so if it is
          larger, then all data has been read already.  */
@@ -663,9 +654,10 @@ static ssize_t axtls_recv(struct connectdata *conn, /* connection data */
  *     0 means the connection has been closed
  *    -1 means the connection status is unknown
  */
-int Curl_axtls_check_cxn(struct connectdata *conn)
+static int Curl_axtls_check_cxn(struct connectdata *conn)
 {
-  /* openssl.c line: rc = SSL_peek(conn->ssl[FIRSTSOCKET].ssl, (void*)&buf, 1);
+  /* openssl.c line:
+     rc = SSL_peek(conn->ssl[FIRSTSOCKET].backend->ssl, (void*)&buf, 1);
      axTLS compat layer always returns the last argument, so connection is
      always alive? */
 
@@ -673,7 +665,7 @@ int Curl_axtls_check_cxn(struct connectdata *conn)
    return 1; /* connection still in place */
 }
 
-void Curl_axtls_session_free(void *ptr)
+static void Curl_axtls_session_free(void *ptr)
 {
   (void)ptr;
   /* free the ID */
@@ -681,14 +673,13 @@ void Curl_axtls_session_free(void *ptr)
      compatibility layer does nothing, so we do nothing too. */
 }
 
-size_t Curl_axtls_version(char *buffer, size_t size)
+static size_t Curl_axtls_version(char *buffer, size_t size)
 {
   return snprintf(buffer, size, "axTLS/%s", ssl_version());
 }
 
-CURLcode Curl_axtls_random(struct Curl_easy *data,
-                           unsigned char *entropy,
-                           size_t length)
+static CURLcode Curl_axtls_random(struct Curl_easy *data,
+                                  unsigned char *entropy, size_t length)
 {
   static bool ssl_seeded = FALSE;
   (void)data;
@@ -703,4 +694,49 @@ CURLcode Curl_axtls_random(struct Curl_easy *data,
   return CURLE_OK;
 }
 
+static void *Curl_axtls_get_internals(struct ssl_connect_data *connssl,
+                                      CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->ssl;
+}
+
+const struct Curl_ssl Curl_ssl_axtls = {
+  { CURLSSLBACKEND_AXTLS, "axtls" }, /* info */
+
+  0, /* have_ca_path */
+  0, /* have_certinfo */
+  0, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  /*
+   * axTLS has no global init.  Everything is done through SSL and SSL_CTX
+   * structs stored in connectdata structure.
+   */
+  Curl_none_init,                 /* init */
+  /* axTLS has no global cleanup. */
+  Curl_none_cleanup,              /* cleanup */
+  Curl_axtls_version,             /* version */
+  Curl_axtls_check_cxn,           /* check_cxn */
+  Curl_axtls_shutdown,            /* shutdown */
+  Curl_none_data_pending,         /* data_pending */
+  Curl_axtls_random,              /* random */
+  Curl_none_cert_status_request,  /* cert_status_request */
+  Curl_axtls_connect,             /* connect */
+  Curl_axtls_connect_nonblocking, /* connect_nonblocking */
+  Curl_axtls_get_internals,       /* get_internals */
+  Curl_axtls_close,               /* close */
+  Curl_none_close_all,            /* close_all */
+  Curl_axtls_session_free,        /* session_free */
+  Curl_none_set_engine,           /* set_engine */
+  Curl_none_set_engine_default,   /* set_engine_default */
+  Curl_none_engines_list,         /* engines_list */
+  Curl_none_false_start,          /* false_start */
+  Curl_none_md5sum,               /* md5sum */
+  NULL                            /* sha256sum */
+};
+
 #endif /* USE_AXTLS */
diff --git a/lib/vtls/axtls.h b/lib/vtls/axtls.h
index 53797ea..3f1e129 100644
--- a/lib/vtls/axtls.h
+++ b/lib/vtls/axtls.h
@@ -27,44 +27,7 @@
 #include "curl/curl.h"
 #include "urldata.h"
 
-int Curl_axtls_init(void);
-int Curl_axtls_cleanup(void);
-CURLcode Curl_axtls_connect(struct connectdata *conn, int sockindex);
-CURLcode Curl_axtls_connect_nonblocking(
-    struct connectdata *conn,
-    int sockindex,
-    bool *done);
-
- /* close a SSL connection */
-void Curl_axtls_close(struct connectdata *conn, int sockindex);
-
-void Curl_axtls_session_free(void *ptr);
-size_t Curl_axtls_version(char *buffer, size_t size);
-int Curl_axtls_shutdown(struct connectdata *conn, int sockindex);
-int Curl_axtls_check_cxn(struct connectdata *conn);
-CURLcode Curl_axtls_random(struct Curl_easy *data,
-                           unsigned char *entropy,
-                           size_t length);
-
-/* Set the API backend definition to axTLS */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_AXTLS
-
-/* API setup for axTLS */
-#define curlssl_init Curl_axtls_init
-#define curlssl_cleanup Curl_axtls_cleanup
-#define curlssl_connect Curl_axtls_connect
-#define curlssl_connect_nonblocking Curl_axtls_connect_nonblocking
-#define curlssl_session_free(x)  Curl_axtls_session_free(x)
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_axtls_close
-#define curlssl_shutdown(x,y) Curl_axtls_shutdown(x,y)
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_axtls_version
-#define curlssl_check_cxn(x) Curl_axtls_check_cxn(x)
-#define curlssl_data_pending(x,y) ((void)x, (void)y, 0)
-#define curlssl_random(x,y,z) Curl_axtls_random(x,y,z)
+extern const struct Curl_ssl Curl_ssl_axtls;
 
 #endif /* USE_AXTLS */
 #endif /* HEADER_CURL_AXTLS_H */
diff --git a/lib/vtls/cyassl.c b/lib/vtls/cyassl.c
index 01bfdab..ba5ee15 100644
--- a/lib/vtls/cyassl.c
+++ b/lib/vtls/cyassl.c
@@ -91,6 +91,7 @@ and that's a problem since options.h hasn't been included yet. */
 #include "x509asn1.h"
 #include "curl_printf.h"
 
+#include <cyassl/openssl/ssl.h>
 #include <cyassl/ssl.h>
 #ifdef HAVE_CYASSL_ERROR_SSL_H
 #include <cyassl/error-ssl.h>
@@ -110,6 +111,25 @@ and that's a problem since options.h hasn't been included yet. */
 #define CYASSL_MAX_ERROR_SZ 80
 #endif
 
+/* KEEP_PEER_CERT is a product of the presence of build time symbol
+   OPENSSL_EXTRA without NO_CERTS, depending on the version. KEEP_PEER_CERT is
+   in wolfSSL's settings.h, and the latter two are build time symbols in
+   options.h. */
+#ifndef KEEP_PEER_CERT
+#if defined(HAVE_CYASSL_GET_PEER_CERTIFICATE) || \
+    defined(HAVE_WOLFSSL_GET_PEER_CERTIFICATE) || \
+    (defined(OPENSSL_EXTRA) && !defined(NO_CERTS))
+#define KEEP_PEER_CERT
+#endif
+#endif
+
+struct ssl_backend_data {
+  SSL_CTX* ctx;
+  SSL*     handle;
+};
+
+#define BACKEND connssl->backend
+
 static Curl_recv cyassl_recv;
 static Curl_send cyassl_send;
 
@@ -136,7 +156,7 @@ cyassl_connect_step1(struct connectdata *conn,
   char error_buffer[CYASSL_MAX_ERROR_SZ];
   char *ciphers;
   struct Curl_easy *data = conn->data;
-  struct ssl_connect_data* conssl = &conn->ssl[sockindex];
+  struct ssl_connect_data* connssl = &conn->ssl[sockindex];
   SSL_METHOD* req_method = NULL;
   curl_socket_t sockfd = conn->sock[sockindex];
 #ifdef HAVE_SNI
@@ -146,7 +166,7 @@ cyassl_connect_step1(struct connectdata *conn,
 #define use_sni(x)  Curl_nop_stmt
 #endif
 
-  if(conssl->state == ssl_connection_complete)
+  if(connssl->state == ssl_connection_complete)
     return CURLE_OK;
 
   if(SSL_CONN_CONFIG(version_max) != CURL_SSLVERSION_MAX_NONE) {
@@ -205,11 +225,11 @@ cyassl_connect_step1(struct connectdata *conn,
     return CURLE_OUT_OF_MEMORY;
   }
 
-  if(conssl->ctx)
-    SSL_CTX_free(conssl->ctx);
-  conssl->ctx = SSL_CTX_new(req_method);
+  if(BACKEND->ctx)
+    SSL_CTX_free(BACKEND->ctx);
+  BACKEND->ctx = SSL_CTX_new(req_method);
 
-  if(!conssl->ctx) {
+  if(!BACKEND->ctx) {
     failf(data, "SSL: couldn't create a context!");
     return CURLE_OUT_OF_MEMORY;
   }
@@ -225,9 +245,9 @@ cyassl_connect_step1(struct connectdata *conn,
     version. We use wolfSSL_CTX_SetMinVersion and not CyaSSL_SetMinVersion
     because only the former will work before the user's CTX callback is called.
     */
-    if((wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1) != 1) &&
-       (wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1_1) != 1) &&
-       (wolfSSL_CTX_SetMinVersion(conssl->ctx, WOLFSSL_TLSV1_2) != 1)) {
+    if((wolfSSL_CTX_SetMinVersion(BACKEND->ctx, WOLFSSL_TLSV1) != 1) &&
+       (wolfSSL_CTX_SetMinVersion(BACKEND->ctx, WOLFSSL_TLSV1_1) != 1) &&
+       (wolfSSL_CTX_SetMinVersion(BACKEND->ctx, WOLFSSL_TLSV1_2) != 1)) {
       failf(data, "SSL: couldn't set the minimum protocol version");
       return CURLE_SSL_CONNECT_ERROR;
     }
@@ -237,7 +257,7 @@ cyassl_connect_step1(struct connectdata *conn,
 
   ciphers = SSL_CONN_CONFIG(cipher_list);
   if(ciphers) {
-    if(!SSL_CTX_set_cipher_list(conssl->ctx, ciphers)) {
+    if(!SSL_CTX_set_cipher_list(BACKEND->ctx, ciphers)) {
       failf(data, "failed setting cipher list: %s", ciphers);
       return CURLE_SSL_CIPHER;
     }
@@ -247,7 +267,7 @@ cyassl_connect_step1(struct connectdata *conn,
 #ifndef NO_FILESYSTEM
   /* load trusted cacert */
   if(SSL_CONN_CONFIG(CAfile)) {
-    if(1 != SSL_CTX_load_verify_locations(conssl->ctx,
+    if(1 != SSL_CTX_load_verify_locations(BACKEND->ctx,
                                       SSL_CONN_CONFIG(CAfile),
                                       SSL_CONN_CONFIG(CApath))) {
       if(SSL_CONN_CONFIG(verifypeer)) {
@@ -284,7 +304,7 @@ cyassl_connect_step1(struct connectdata *conn,
   if(SSL_SET_OPTION(cert) && SSL_SET_OPTION(key)) {
     int file_type = do_file_type(SSL_SET_OPTION(cert_type));
 
-    if(SSL_CTX_use_certificate_file(conssl->ctx, SSL_SET_OPTION(cert),
+    if(SSL_CTX_use_certificate_file(BACKEND->ctx, SSL_SET_OPTION(cert),
                                      file_type) != 1) {
       failf(data, "unable to use client certificate (no key or wrong pass"
             " phrase?)");
@@ -292,7 +312,7 @@ cyassl_connect_step1(struct connectdata *conn,
     }
 
     file_type = do_file_type(SSL_SET_OPTION(key_type));
-    if(SSL_CTX_use_PrivateKey_file(conssl->ctx, SSL_SET_OPTION(key),
+    if(SSL_CTX_use_PrivateKey_file(BACKEND->ctx, SSL_SET_OPTION(key),
                                     file_type) != 1) {
       failf(data, "unable to set private key");
       return CURLE_SSL_CONNECT_ERROR;
@@ -304,7 +324,7 @@ cyassl_connect_step1(struct connectdata *conn,
    * fail to connect if the verification fails, or if it should continue
    * anyway. In the latter case the result of the verification is checked with
    * SSL_get_verify_result() below. */
-  SSL_CTX_set_verify(conssl->ctx,
+  SSL_CTX_set_verify(BACKEND->ctx,
                      SSL_CONN_CONFIG(verifypeer)?SSL_VERIFY_PEER:
                                                  SSL_VERIFY_NONE,
                      NULL);
@@ -323,7 +343,7 @@ cyassl_connect_step1(struct connectdata *conn,
 #ifdef ENABLE_IPV6
        (0 == Curl_inet_pton(AF_INET6, hostname, &addr6)) &&
 #endif
-       (CyaSSL_CTX_UseSNI(conssl->ctx, CYASSL_SNI_HOST_NAME, hostname,
+       (CyaSSL_CTX_UseSNI(BACKEND->ctx, CYASSL_SNI_HOST_NAME, hostname,
                           (unsigned short)hostname_len) != 1)) {
       infof(data, "WARNING: failed to configure server name indication (SNI) "
             "TLS extension\n");
@@ -336,15 +356,15 @@ cyassl_connect_step1(struct connectdata *conn,
      https://github.com/wolfSSL/wolfssl/issues/366
      The supported curves below are those also supported by OpenSSL 1.0.2 and
      in the same order. */
-  CyaSSL_CTX_UseSupportedCurve(conssl->ctx, 0x17); /* secp256r1 */
-  CyaSSL_CTX_UseSupportedCurve(conssl->ctx, 0x19); /* secp521r1 */
-  CyaSSL_CTX_UseSupportedCurve(conssl->ctx, 0x18); /* secp384r1 */
+  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x17); /* secp256r1 */
+  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x19); /* secp521r1 */
+  CyaSSL_CTX_UseSupportedCurve(BACKEND->ctx, 0x18); /* secp384r1 */
 #endif
 
   /* give application a chance to interfere with SSL set up. */
   if(data->set.ssl.fsslctx) {
     CURLcode result = CURLE_OK;
-    result = (*data->set.ssl.fsslctx)(data, conssl->ctx,
+    result = (*data->set.ssl.fsslctx)(data, BACKEND->ctx,
                                       data->set.ssl.fsslctxp);
     if(result) {
       failf(data, "error signaled by ssl ctx callback");
@@ -362,10 +382,10 @@ cyassl_connect_step1(struct connectdata *conn,
 #endif
 
   /* Let's make an SSL structure */
-  if(conssl->handle)
-    SSL_free(conssl->handle);
-  conssl->handle = SSL_new(conssl->ctx);
-  if(!conssl->handle) {
+  if(BACKEND->handle)
+    SSL_free(BACKEND->handle);
+  BACKEND->handle = SSL_new(BACKEND->ctx);
+  if(!BACKEND->handle) {
     failf(data, "SSL: couldn't create a context (handle)!");
     return CURLE_OUT_OF_MEMORY;
   }
@@ -388,7 +408,7 @@ cyassl_connect_step1(struct connectdata *conn,
     strcpy(protocols + strlen(protocols), ALPN_HTTP_1_1);
     infof(data, "ALPN, offering %s\n", ALPN_HTTP_1_1);
 
-    if(wolfSSL_UseALPN(conssl->handle, protocols,
+    if(wolfSSL_UseALPN(BACKEND->handle, protocols,
                        (unsigned)strlen(protocols),
                        WOLFSSL_ALPN_CONTINUE_ON_MISMATCH) != SSL_SUCCESS) {
       failf(data, "SSL: failed setting ALPN protocols");
@@ -404,10 +424,10 @@ cyassl_connect_step1(struct connectdata *conn,
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL, sockindex)) {
       /* we got a session id, use it! */
-      if(!SSL_set_session(conssl->handle, ssl_sessionid)) {
+      if(!SSL_set_session(BACKEND->handle, ssl_sessionid)) {
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "SSL: SSL_set_session failed: %s",
-              ERR_error_string(SSL_get_error(conssl->handle, 0),
+              ERR_error_string(SSL_get_error(BACKEND->handle, 0),
               error_buffer));
         return CURLE_SSL_CONNECT_ERROR;
       }
@@ -418,12 +438,12 @@ cyassl_connect_step1(struct connectdata *conn,
   }
 
   /* pass the raw socket into the SSL layer */
-  if(!SSL_set_fd(conssl->handle, (int)sockfd)) {
+  if(!SSL_set_fd(BACKEND->handle, (int)sockfd)) {
     failf(data, "SSL: SSL_set_fd failed");
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  conssl->connecting_state = ssl_connect_2;
+  connssl->connecting_state = ssl_connect_2;
   return CURLE_OK;
 }
 
@@ -434,7 +454,7 @@ cyassl_connect_step2(struct connectdata *conn,
 {
   int ret = -1;
   struct Curl_easy *data = conn->data;
-  struct ssl_connect_data* conssl = &conn->ssl[sockindex];
+  struct ssl_connect_data* connssl = &conn->ssl[sockindex];
   const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
   const char * const dispname = SSL_IS_PROXY() ?
@@ -448,22 +468,22 @@ cyassl_connect_step2(struct connectdata *conn,
 
   /* Enable RFC2818 checks */
   if(SSL_CONN_CONFIG(verifyhost)) {
-    ret = CyaSSL_check_domain_name(conssl->handle, hostname);
+    ret = CyaSSL_check_domain_name(BACKEND->handle, hostname);
     if(ret == SSL_FAILURE)
       return CURLE_OUT_OF_MEMORY;
   }
 
-  ret = SSL_connect(conssl->handle);
+  ret = SSL_connect(BACKEND->handle);
   if(ret != 1) {
     char error_buffer[CYASSL_MAX_ERROR_SZ];
-    int  detail = SSL_get_error(conssl->handle, ret);
+    int  detail = SSL_get_error(BACKEND->handle, ret);
 
     if(SSL_ERROR_WANT_READ == detail) {
-      conssl->connecting_state = ssl_connect_2_reading;
+      connssl->connecting_state = ssl_connect_2_reading;
       return CURLE_OK;
     }
     else if(SSL_ERROR_WANT_WRITE == detail) {
-      conssl->connecting_state = ssl_connect_2_writing;
+      connssl->connecting_state = ssl_connect_2_writing;
       return CURLE_OK;
     }
     /* There is no easy way to override only the CN matching.
@@ -524,7 +544,7 @@ cyassl_connect_step2(struct connectdata *conn,
     curl_asn1Element *pubkey;
     CURLcode result;
 
-    x509 = SSL_get_peer_certificate(conssl->handle);
+    x509 = SSL_get_peer_certificate(BACKEND->handle);
     if(!x509) {
       failf(data, "SSL: failed retrieving server certificate");
       return CURLE_SSL_PINNEDPUBKEYNOTMATCH;
@@ -566,7 +586,7 @@ cyassl_connect_step2(struct connectdata *conn,
     char *protocol = NULL;
     unsigned short protocol_len = 0;
 
-    rc = wolfSSL_ALPN_GetProtocol(conssl->handle, &protocol, &protocol_len);
+    rc = wolfSSL_ALPN_GetProtocol(BACKEND->handle, &protocol, &protocol_len);
 
     if(rc == SSL_SUCCESS) {
       infof(data, "ALPN, server accepted to use %.*s\n", protocol_len,
@@ -595,11 +615,11 @@ cyassl_connect_step2(struct connectdata *conn,
   }
 #endif /* HAVE_ALPN */
 
-  conssl->connecting_state = ssl_connect_3;
+  connssl->connecting_state = ssl_connect_3;
 #if (LIBCYASSL_VERSION_HEX >= 0x03009010)
   infof(data, "SSL connection using %s / %s\n",
-        wolfSSL_get_version(conssl->handle),
-        wolfSSL_get_cipher_name(conssl->handle));
+        wolfSSL_get_version(BACKEND->handle),
+        wolfSSL_get_cipher_name(BACKEND->handle));
 #else
   infof(data, "SSL connected\n");
 #endif
@@ -623,7 +643,7 @@ cyassl_connect_step3(struct connectdata *conn,
     SSL_SESSION *our_ssl_sessionid;
     void *old_ssl_sessionid = NULL;
 
-    our_ssl_sessionid = SSL_get_session(connssl->handle);
+    our_ssl_sessionid = SSL_get_session(BACKEND->handle);
 
     Curl_ssl_sessionid_lock(conn);
     incache = !(Curl_ssl_getsessionid(conn, &old_ssl_sessionid, NULL,
@@ -660,12 +680,13 @@ static ssize_t cyassl_send(struct connectdata *conn,
                            size_t len,
                            CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   char error_buffer[CYASSL_MAX_ERROR_SZ];
   int  memlen = (len > (size_t)INT_MAX) ? INT_MAX : (int)len;
-  int  rc     = SSL_write(conn->ssl[sockindex].handle, mem, memlen);
+  int  rc     = SSL_write(BACKEND->handle, mem, memlen);
 
   if(rc < 0) {
-    int err = SSL_get_error(conn->ssl[sockindex].handle, rc);
+    int err = SSL_get_error(BACKEND->handle, rc);
 
     switch(err) {
     case SSL_ERROR_WANT_READ:
@@ -684,18 +705,18 @@ static ssize_t cyassl_send(struct connectdata *conn,
   return rc;
 }
 
-void Curl_cyassl_close(struct connectdata *conn, int sockindex)
+static void Curl_cyassl_close(struct connectdata *conn, int sockindex)
 {
-  struct ssl_connect_data *conssl = &conn->ssl[sockindex];
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
-  if(conssl->handle) {
-    (void)SSL_shutdown(conssl->handle);
-    SSL_free(conssl->handle);
-    conssl->handle = NULL;
+  if(BACKEND->handle) {
+    (void)SSL_shutdown(BACKEND->handle);
+    SSL_free(BACKEND->handle);
+    BACKEND->handle = NULL;
   }
-  if(conssl->ctx) {
-    SSL_CTX_free(conssl->ctx);
-    conssl->ctx = NULL;
+  if(BACKEND->ctx) {
+    SSL_CTX_free(BACKEND->ctx);
+    BACKEND->ctx = NULL;
   }
 }
 
@@ -705,12 +726,13 @@ static ssize_t cyassl_recv(struct connectdata *conn,
                            size_t buffersize,
                            CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[num];
   char error_buffer[CYASSL_MAX_ERROR_SZ];
   int  buffsize = (buffersize > (size_t)INT_MAX) ? INT_MAX : (int)buffersize;
-  int  nread    = SSL_read(conn->ssl[num].handle, buf, buffsize);
+  int  nread    = SSL_read(BACKEND->handle, buf, buffsize);
 
   if(nread < 0) {
-    int err = SSL_get_error(conn->ssl[num].handle, nread);
+    int err = SSL_get_error(BACKEND->handle, nread);
 
     switch(err) {
     case SSL_ERROR_ZERO_RETURN: /* no more data */
@@ -732,14 +754,14 @@ static ssize_t cyassl_recv(struct connectdata *conn,
 }
 
 
-void Curl_cyassl_session_free(void *ptr)
+static void Curl_cyassl_session_free(void *ptr)
 {
   (void)ptr;
   /* CyaSSL reuses sessions on own, no free */
 }
 
 
-size_t Curl_cyassl_version(char *buffer, size_t size)
+static size_t Curl_cyassl_version(char *buffer, size_t size)
 {
 #if LIBCYASSL_VERSION_HEX >= 0x03006000
   return snprintf(buffer, size, "wolfSSL/%s", wolfSSL_lib_version());
@@ -753,16 +775,18 @@ size_t Curl_cyassl_version(char *buffer, size_t size)
 }
 
 
-int Curl_cyassl_init(void)
+static int Curl_cyassl_init(void)
 {
   return (CyaSSL_Init() == SSL_SUCCESS);
 }
 
 
-bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex)
+static bool Curl_cyassl_data_pending(const struct connectdata* conn,
+                                     int connindex)
 {
-  if(conn->ssl[connindex].handle)   /* SSL is in use */
-    return (0 != SSL_pending(conn->ssl[connindex].handle)) ? TRUE : FALSE;
+  const struct ssl_connect_data *connssl = &conn->ssl[connindex];
+  if(BACKEND->handle)   /* SSL is in use */
+    return (0 != SSL_pending(BACKEND->handle)) ? TRUE : FALSE;
   else
     return FALSE;
 }
@@ -772,14 +796,14 @@ bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex)
  * This function is called to shut down the SSL layer but keep the
  * socket open (CCC - Clear Command Channel)
  */
-int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex)
 {
   int retval = 0;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
-  if(connssl->handle) {
-    SSL_free(connssl->handle);
-    connssl->handle = NULL;
+  if(BACKEND->handle) {
+    SSL_free(BACKEND->handle);
+    BACKEND->handle = NULL;
   }
   return retval;
 }
@@ -804,7 +828,7 @@ cyassl_connect_common(struct connectdata *conn,
     return CURLE_OK;
   }
 
-  if(ssl_connect_1==connssl->connecting_state) {
+  if(ssl_connect_1 == connssl->connecting_state) {
     /* Find out how much more time we're allowed */
     timeout_ms = Curl_timeleft(data, NULL, TRUE);
 
@@ -836,9 +860,9 @@ cyassl_connect_common(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading
        || connssl->connecting_state == ssl_connect_2_writing) {
 
-      curl_socket_t writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      curl_socket_t readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
@@ -899,18 +923,14 @@ cyassl_connect_common(struct connectdata *conn,
 }
 
 
-CURLcode
-Curl_cyassl_connect_nonblocking(struct connectdata *conn,
-                                int sockindex,
-                                bool *done)
+static CURLcode Curl_cyassl_connect_nonblocking(struct connectdata *conn,
+                                                int sockindex, bool *done)
 {
   return cyassl_connect_common(conn, sockindex, TRUE, done);
 }
 
 
-CURLcode
-Curl_cyassl_connect(struct connectdata *conn,
-                    int sockindex)
+static CURLcode Curl_cyassl_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -924,9 +944,8 @@ Curl_cyassl_connect(struct connectdata *conn,
   return CURLE_OK;
 }
 
-CURLcode Curl_cyassl_random(struct Curl_easy *data,
-                            unsigned char *entropy,
-                            size_t length)
+static CURLcode Curl_cyassl_random(struct Curl_easy *data,
+                                   unsigned char *entropy, size_t length)
 {
   RNG rng;
   (void)data;
@@ -939,10 +958,10 @@ CURLcode Curl_cyassl_random(struct Curl_easy *data,
   return CURLE_OK;
 }
 
-void Curl_cyassl_sha256sum(const unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *sha256sum /* output */,
-                      size_t unused)
+static void Curl_cyassl_sha256sum(const unsigned char *tmp, /* input */
+                                  size_t tmplen,
+                                  unsigned char *sha256sum /* output */,
+                                  size_t unused)
 {
   Sha256 SHA256pw;
   (void)unused;
@@ -951,4 +970,48 @@ void Curl_cyassl_sha256sum(const unsigned char *tmp, /* input */
   Sha256Final(&SHA256pw, sha256sum);
 }
 
+static void *Curl_cyassl_get_internals(struct ssl_connect_data *connssl,
+                                       CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->handle;
+}
+
+const struct Curl_ssl Curl_ssl_cyassl = {
+  { CURLSSLBACKEND_WOLFSSL, "WolfSSL" }, /* info */
+
+  0, /* have_ca_path */
+  0, /* have_certinfo */
+#ifdef KEEP_PEER_CERT
+  1, /* have_pinnedpubkey */
+#else
+  0, /* have_pinnedpubkey */
+#endif
+  1, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_cyassl_init,                /* init */
+  Curl_none_cleanup,               /* cleanup */
+  Curl_cyassl_version,             /* version */
+  Curl_none_check_cxn,             /* check_cxn */
+  Curl_cyassl_shutdown,            /* shutdown */
+  Curl_cyassl_data_pending,        /* data_pending */
+  Curl_cyassl_random,              /* random */
+  Curl_none_cert_status_request,   /* cert_status_request */
+  Curl_cyassl_connect,             /* connect */
+  Curl_cyassl_connect_nonblocking, /* connect_nonblocking */
+  Curl_cyassl_get_internals,       /* get_internals */
+  Curl_cyassl_close,               /* close */
+  Curl_none_close_all,             /* close_all */
+  Curl_cyassl_session_free,        /* session_free */
+  Curl_none_set_engine,            /* set_engine */
+  Curl_none_set_engine_default,    /* set_engine_default */
+  Curl_none_engines_list,          /* engines_list */
+  Curl_none_false_start,           /* false_start */
+  Curl_none_md5sum,                /* md5sum */
+  Curl_cyassl_sha256sum            /* sha256sum */
+};
+
 #endif
diff --git a/lib/vtls/cyassl.h b/lib/vtls/cyassl.h
index f47719e..01e11cc 100644
--- a/lib/vtls/cyassl.h
+++ b/lib/vtls/cyassl.h
@@ -25,68 +25,7 @@
 
 #ifdef USE_CYASSL
 
-/* KEEP_PEER_CERT is a product of the presence of build time symbol
-   OPENSSL_EXTRA without NO_CERTS, depending on the version. KEEP_PEER_CERT is
-   in wolfSSL's settings.h, and the latter two are build time symbols in
-   options.h. */
-#ifndef KEEP_PEER_CERT
-#if defined(HAVE_CYASSL_GET_PEER_CERTIFICATE) || \
-    defined(HAVE_WOLFSSL_GET_PEER_CERTIFICATE) || \
-    (defined(OPENSSL_EXTRA) && !defined(NO_CERTS))
-#define KEEP_PEER_CERT
-#endif
-#endif
-
-CURLcode Curl_cyassl_connect(struct connectdata *conn, int sockindex);
-bool Curl_cyassl_data_pending(const struct connectdata* conn, int connindex);
-int Curl_cyassl_shutdown(struct connectdata* conn, int sockindex);
-
- /* close a SSL connection */
-void Curl_cyassl_close(struct connectdata *conn, int sockindex);
-
-void Curl_cyassl_session_free(void *ptr);
-size_t Curl_cyassl_version(char *buffer, size_t size);
-int Curl_cyassl_shutdown(struct connectdata *conn, int sockindex);
-int Curl_cyassl_init(void);
-CURLcode Curl_cyassl_connect_nonblocking(struct connectdata *conn,
-                                         int sockindex,
-                                         bool *done);
-CURLcode Curl_cyassl_random(struct Curl_easy *data,
-                            unsigned char *entropy,
-                            size_t length);
-void Curl_cyassl_sha256sum(const unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *sha256sum, /* output */
-                     size_t unused);
-
-/* Set the API backend definition to CyaSSL */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_CYASSL
-
-/* this backend supports CURLOPT_SSL_CTX_* */
-#define have_curlssl_ssl_ctx 1
-
-#ifdef KEEP_PEER_CERT
-/* this backend supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-#endif
-
-/* API setup for CyaSSL */
-#define curlssl_init Curl_cyassl_init
-#define curlssl_cleanup() Curl_nop_stmt
-#define curlssl_connect Curl_cyassl_connect
-#define curlssl_connect_nonblocking Curl_cyassl_connect_nonblocking
-#define curlssl_session_free(x)  Curl_cyassl_session_free(x)
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_cyassl_close
-#define curlssl_shutdown(x,y) Curl_cyassl_shutdown(x,y)
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_cyassl_version
-#define curlssl_check_cxn(x) ((void)x, -1)
-#define curlssl_data_pending(x,y) Curl_cyassl_data_pending(x,y)
-#define curlssl_random(x,y,z) Curl_cyassl_random(x,y,z)
-#define curlssl_sha256sum(a,b,c,d) Curl_cyassl_sha256sum(a,b,c,d)
+extern const struct Curl_ssl Curl_ssl_cyassl;
 
 #endif /* USE_CYASSL */
 #endif /* HEADER_CURL_CYASSL_H */
diff --git a/lib/vtls/darwinssl.c b/lib/vtls/darwinssl.c
index 0417665..a98f433 100644
--- a/lib/vtls/darwinssl.c
+++ b/lib/vtls/darwinssl.c
@@ -34,11 +34,18 @@
 
 #ifdef USE_DARWINSSL
 
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-pointer-compare"
+#endif /* __clang__ */
+
 #ifdef HAVE_LIMITS_H
 #include <limits.h>
 #endif
 
 #include <Security/Security.h>
+/* For some reason, when building for iOS, the omnibus header above does
+ * not include SecureTransport.h as of iOS SDK 5.1. */
 #include <Security/SecureTransport.h>
 #include <CoreFoundation/CoreFoundation.h>
 #include <CommonCrypto/CommonDigest.h>
@@ -113,6 +120,33 @@
 #define ioErr -36
 #define paramErr -50
 
+struct ssl_backend_data {
+  SSLContextRef ssl_ctx;
+  curl_socket_t ssl_sockfd;
+  bool ssl_direction; /* true if writing, false if reading */
+  size_t ssl_write_buffered_length;
+};
+
+#define BACKEND connssl->backend
+
+/* pinned public key support tests */
+
+/* version 1 supports macOS 10.12+ and iOS 10+ */
+#if ((TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) || \
+    (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED  >= 101200))
+#define DARWIN_SSL_PINNEDPUBKEY_V1 1
+#endif
+
+/* version 2 supports MacOSX 10.7+ */
+#if (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
+#define DARWIN_SSL_PINNEDPUBKEY_V2 1
+#endif
+
+#if defined(DARWIN_SSL_PINNEDPUBKEY_V1) || defined(DARWIN_SSL_PINNEDPUBKEY_V2)
+/* this backend supports CURLOPT_PINNEDPUBLICKEY */
+#define DARWIN_SSL_PINNEDPUBKEY 1
+#endif /* DARWIN_SSL_PINNEDPUBKEY */
+
 #ifdef DARWIN_SSL_PINNEDPUBKEY
 /* both new and old APIs return rsa keys missing the spki header (not DER) */
 static const unsigned char rsa4096SpkiHeader[] = {
@@ -156,7 +190,7 @@ static OSStatus SocketRead(SSLConnectionRef connection,
   UInt8 *currData = (UInt8 *)data;
   /*int sock = *(int *)connection;*/
   struct ssl_connect_data *connssl = (struct ssl_connect_data *)connection;
-  int sock = connssl->ssl_sockfd;
+  int sock = BACKEND->ssl_sockfd;
   OSStatus rtn = noErr;
   size_t bytesRead;
   ssize_t rrtn;
@@ -185,7 +219,7 @@ static OSStatus SocketRead(SSLConnectionRef connection,
             break;
           case EAGAIN:
             rtn = errSSLWouldBlock;
-            connssl->ssl_direction = false;
+            BACKEND->ssl_direction = false;
             break;
           default:
             rtn = ioErr;
@@ -216,7 +250,7 @@ static OSStatus SocketWrite(SSLConnectionRef connection,
   size_t bytesSent = 0;
   /*int sock = *(int *)connection;*/
   struct ssl_connect_data *connssl = (struct ssl_connect_data *)connection;
-  int sock = connssl->ssl_sockfd;
+  int sock = BACKEND->ssl_sockfd;
   ssize_t length;
   size_t dataLen = *dataLength;
   const UInt8 *dataPtr = (UInt8 *)data;
@@ -236,7 +270,7 @@ static OSStatus SocketWrite(SSLConnectionRef connection,
     theErr = errno;
     if(theErr == EAGAIN) {
       ortn = errSSLWouldBlock;
-      connssl->ssl_direction = true;
+      BACKEND->ssl_direction = true;
     }
     else {
       ortn = ioErr;
@@ -844,7 +878,7 @@ CF_INLINE void GetDarwinVersionNumber(int *major, int *minor)
    into a string. Some aren't available under iOS or newer cats. So here's
    a unified function for getting a string describing the certificate that
    ought to work in all cats starting with Leopard. */
-CF_INLINE CFStringRef CopyCertSubject(SecCertificateRef cert)
+CF_INLINE CFStringRef getsubject(SecCertificateRef cert)
 {
   CFStringRef server_cert_summary = CFSTR("(null)");
 
@@ -871,6 +905,54 @@ CF_INLINE CFStringRef CopyCertSubject(SecCertificateRef cert)
   return server_cert_summary;
 }
 
+static CURLcode CopyCertSubject(struct Curl_easy *data,
+                                SecCertificateRef cert, char **certp)
+{
+  CFStringRef c = getsubject(cert);
+  CURLcode result = CURLE_OK;
+  const char *direct;
+  char *cbuf = NULL;
+  *certp = NULL;
+
+  if(!c) {
+    failf(data, "SSL: invalid CA certificate subject");
+    return CURLE_OUT_OF_MEMORY;
+  }
+
+  /* If the subject is already available as UTF-8 encoded (ie 'direct') then
+     use that, else convert it. */
+  direct = CFStringGetCStringPtr(c, kCFStringEncodingUTF8);
+  if(direct) {
+    *certp = strdup(direct);
+    if(!*certp) {
+      failf(data, "SSL: out of memory");
+      result = CURLE_OUT_OF_MEMORY;
+    }
+  }
+  else {
+    size_t cbuf_size = ((size_t)CFStringGetLength(c) * 4) + 1;
+    cbuf = calloc(cbuf_size, 1);
+    if(cbuf) {
+      if(!CFStringGetCString(c, cbuf, cbuf_size,
+                             kCFStringEncodingUTF8)) {
+        failf(data, "SSL: invalid CA certificate subject");
+        result = CURLE_SSL_CACERT;
+      }
+      else
+        /* pass back the buffer */
+        *certp = cbuf;
+    }
+    else {
+      failf(data, "SSL: couldn't allocate %zu bytes of memory", cbuf_size);
+      result = CURLE_OUT_OF_MEMORY;
+    }
+  }
+  if(result)
+    free(cbuf);
+  CFRelease(c);
+  return result;
+}
+
 #if CURL_SUPPORT_MAC_10_6
 /* The SecKeychainSearch API was deprecated in Lion, and using it will raise
    deprecation warnings, so let's not compile this unless it's necessary: */
@@ -963,7 +1045,7 @@ static OSStatus CopyIdentityWithLabel(char *label,
       keys_list_count = CFArrayGetCount(keys_list);
       *out_cert_and_key = NULL;
       status = 1;
-      for(i=0; i<keys_list_count; i++) {
+      for(i = 0; i<keys_list_count; i++) {
         OSStatus err = noErr;
         SecCertificateRef cert = NULL;
         SecIdentityRef identity =
@@ -1075,7 +1157,8 @@ CF_INLINE bool is_file(const char *filename)
 }
 
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
-static CURLcode darwinssl_version_from_curl(long *darwinver, long ssl_version)
+static CURLcode darwinssl_version_from_curl(SSLProtocol *darwinver,
+                                            long ssl_version)
 {
   switch(ssl_version) {
     case CURL_SSLVERSION_TLSv1_0:
@@ -1136,30 +1219,30 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
       return result;
     }
 
-    (void)SSLSetProtocolVersionMin(connssl->ssl_ctx, darwin_ver_min);
-    (void)SSLSetProtocolVersionMax(connssl->ssl_ctx, darwin_ver_max);
+    (void)SSLSetProtocolVersionMin(BACKEND->ssl_ctx, darwin_ver_min);
+    (void)SSLSetProtocolVersionMax(BACKEND->ssl_ctx, darwin_ver_max);
     return result;
   }
   else {
 #if CURL_SUPPORT_MAC_10_8
     long i = ssl_version;
-    (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+    (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                        kSSLProtocolAll,
                                        false);
     for(; i <= (ssl_version_max >> 16); i++) {
       switch(i) {
         case CURL_SSLVERSION_TLSv1_0:
-          (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+          (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                             kTLSProtocol1,
                                             true);
           break;
         case CURL_SSLVERSION_TLSv1_1:
-          (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+          (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                             kTLSProtocol11,
                                             true);
           break;
         case CURL_SSLVERSION_TLSv1_2:
-          (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+          (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                             kTLSProtocol12,
                                             true);
           break;
@@ -1205,10 +1288,10 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
   if(SSLCreateContext != NULL) {  /* use the newer API if avaialble */
-    if(connssl->ssl_ctx)
-      CFRelease(connssl->ssl_ctx);
-    connssl->ssl_ctx = SSLCreateContext(NULL, kSSLClientSide, kSSLStreamType);
-    if(!connssl->ssl_ctx) {
+    if(BACKEND->ssl_ctx)
+      CFRelease(BACKEND->ssl_ctx);
+    BACKEND->ssl_ctx = SSLCreateContext(NULL, kSSLClientSide, kSSLStreamType);
+    if(!BACKEND->ssl_ctx) {
       failf(data, "SSL: couldn't create a context!");
       return CURLE_OUT_OF_MEMORY;
     }
@@ -1216,9 +1299,9 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   else {
   /* The old ST API does not exist under iOS, so don't compile it: */
 #if CURL_SUPPORT_MAC_10_8
-    if(connssl->ssl_ctx)
-      (void)SSLDisposeContext(connssl->ssl_ctx);
-    err = SSLNewContext(false, &(connssl->ssl_ctx));
+    if(BACKEND->ssl_ctx)
+      (void)SSLDisposeContext(BACKEND->ssl_ctx);
+    err = SSLNewContext(false, &(BACKEND->ssl_ctx));
     if(err != noErr) {
       failf(data, "SSL: couldn't create a context: OSStatus %d", err);
       return CURLE_OUT_OF_MEMORY;
@@ -1226,15 +1309,15 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 #endif /* CURL_SUPPORT_MAC_10_8 */
   }
 #else
-  if(connssl->ssl_ctx)
-    (void)SSLDisposeContext(connssl->ssl_ctx);
-  err = SSLNewContext(false, &(connssl->ssl_ctx));
+  if(BACKEND->ssl_ctx)
+    (void)SSLDisposeContext(BACKEND->ssl_ctx);
+  err = SSLNewContext(false, &(BACKEND->ssl_ctx));
   if(err != noErr) {
     failf(data, "SSL: couldn't create a context: OSStatus %d", err);
     return CURLE_OUT_OF_MEMORY;
   }
 #endif /* CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS */
-  connssl->ssl_write_buffered_length = 0UL; /* reset buffered write length */
+  BACKEND->ssl_write_buffered_length = 0UL; /* reset buffered write length */
 
   /* check to see if we've been told to use an explicit SSL/TLS version */
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
@@ -1242,8 +1325,8 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
     switch(conn->ssl_config.version) {
     case CURL_SSLVERSION_DEFAULT:
     case CURL_SSLVERSION_TLSv1:
-      (void)SSLSetProtocolVersionMin(connssl->ssl_ctx, kTLSProtocol1);
-      (void)SSLSetProtocolVersionMax(connssl->ssl_ctx, kTLSProtocol12);
+      (void)SSLSetProtocolVersionMin(BACKEND->ssl_ctx, kTLSProtocol1);
+      (void)SSLSetProtocolVersionMax(BACKEND->ssl_ctx, kTLSProtocol12);
       break;
     case CURL_SSLVERSION_TLSv1_0:
     case CURL_SSLVERSION_TLSv1_1:
@@ -1256,20 +1339,20 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
         break;
       }
     case CURL_SSLVERSION_SSLv3:
-      err = SSLSetProtocolVersionMin(connssl->ssl_ctx, kSSLProtocol3);
+      err = SSLSetProtocolVersionMin(BACKEND->ssl_ctx, kSSLProtocol3);
       if(err != noErr) {
         failf(data, "Your version of the OS does not support SSLv3");
         return CURLE_SSL_CONNECT_ERROR;
       }
-      (void)SSLSetProtocolVersionMax(connssl->ssl_ctx, kSSLProtocol3);
+      (void)SSLSetProtocolVersionMax(BACKEND->ssl_ctx, kSSLProtocol3);
       break;
     case CURL_SSLVERSION_SSLv2:
-      err = SSLSetProtocolVersionMin(connssl->ssl_ctx, kSSLProtocol2);
+      err = SSLSetProtocolVersionMin(BACKEND->ssl_ctx, kSSLProtocol2);
       if(err != noErr) {
         failf(data, "Your version of the OS does not support SSLv2");
         return CURLE_SSL_CONNECT_ERROR;
       }
-      (void)SSLSetProtocolVersionMax(connssl->ssl_ctx, kSSLProtocol2);
+      (void)SSLSetProtocolVersionMax(BACKEND->ssl_ctx, kSSLProtocol2);
       break;
     default:
       failf(data, "Unrecognized parameter passed via CURLOPT_SSLVERSION");
@@ -1278,19 +1361,19 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   }
   else {
 #if CURL_SUPPORT_MAC_10_8
-    (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+    (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                        kSSLProtocolAll,
                                        false);
     switch(conn->ssl_config.version) {
     case CURL_SSLVERSION_DEFAULT:
     case CURL_SSLVERSION_TLSv1:
-      (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+      (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                          kTLSProtocol1,
                                          true);
-      (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+      (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                          kTLSProtocol11,
                                          true);
-      (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+      (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                          kTLSProtocol12,
                                          true);
       break;
@@ -1305,7 +1388,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
         break;
       }
     case CURL_SSLVERSION_SSLv3:
-      err = SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+      err = SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                          kSSLProtocol3,
                                          true);
       if(err != noErr) {
@@ -1314,7 +1397,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
       }
       break;
     case CURL_SSLVERSION_SSLv2:
-      err = SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+      err = SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                          kSSLProtocol2,
                                          true);
       if(err != noErr) {
@@ -1334,12 +1417,12 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
                 " SSL/TLS version");
     return CURLE_SSL_CONNECT_ERROR;
   }
-  (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx, kSSLProtocolAll, false);
+  (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx, kSSLProtocolAll, false);
   switch(conn->ssl_config.version) {
   case CURL_SSLVERSION_DEFAULT:
   case CURL_SSLVERSION_TLSv1:
   case CURL_SSLVERSION_TLSv1_0:
-    (void)SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+    (void)SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                        kTLSProtocol1,
                                        true);
     break;
@@ -1353,7 +1436,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
     failf(data, "Your version of the OS does not support TLSv1.3");
     return CURLE_SSL_CONNECT_ERROR;
   case CURL_SSLVERSION_SSLv2:
-    err = SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+    err = SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                        kSSLProtocol2,
                                        true);
     if(err != noErr) {
@@ -1362,7 +1445,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
     }
     break;
   case CURL_SSLVERSION_SSLv3:
-    err = SSLSetProtocolVersionEnabled(connssl->ssl_ctx,
+    err = SSLSetProtocolVersionEnabled(BACKEND->ssl_ctx,
                                        kSSLProtocol3,
                                        true);
     if(err != noErr) {
@@ -1412,25 +1495,21 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
       /* If we found one, print it out: */
       err = SecIdentityCopyCertificate(cert_and_key, &cert);
       if(err == noErr) {
-        CFStringRef cert_summary = CopyCertSubject(cert);
-        char cert_summary_c[128];
-
-        if(cert_summary) {
-          memset(cert_summary_c, 0, 128);
-          if(CFStringGetCString(cert_summary,
-                                cert_summary_c,
-                                128,
-                                kCFStringEncodingUTF8)) {
-            infof(data, "Client certificate: %s\n", cert_summary_c);
-          }
-          CFRelease(cert_summary);
-          CFRelease(cert);
+        char *certp;
+        CURLcode result = CopyCertSubject(data, cert, &certp);
+        if(!result) {
+          infof(data, "Client certificate: %s\n", certp);
+          free(certp);
         }
+
+        CFRelease(cert);
+        if(result)
+          return result;
       }
       certs_c[0] = cert_and_key;
       certs = CFArrayCreate(NULL, (const void **)certs_c, 1L,
                             &kCFTypeArrayCallBacks);
-      err = SSLSetCertificate(connssl->ssl_ctx, certs);
+      err = SSLSetCertificate(BACKEND->ssl_ctx, certs);
       if(certs)
         CFRelease(certs);
       if(err != noErr) {
@@ -1493,7 +1572,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   if(SSLSetSessionOption != NULL) {
 #endif /* CURL_BUILD_MAC */
     bool break_on_auth = !conn->ssl_config.verifypeer || ssl_cafile;
-    err = SSLSetSessionOption(connssl->ssl_ctx,
+    err = SSLSetSessionOption(BACKEND->ssl_ctx,
                               kSSLSessionOptionBreakOnServerAuth,
                               break_on_auth);
     if(err != noErr) {
@@ -1503,7 +1582,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   }
   else {
 #if CURL_SUPPORT_MAC_10_8
-    err = SSLSetEnableCertVerify(connssl->ssl_ctx,
+    err = SSLSetEnableCertVerify(BACKEND->ssl_ctx,
                                  conn->ssl_config.verifypeer?true:false);
     if(err != noErr) {
       failf(data, "SSL: SSLSetEnableCertVerify() failed: OSStatus %d", err);
@@ -1512,7 +1591,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
 #endif /* CURL_SUPPORT_MAC_10_8 */
   }
 #else
-  err = SSLSetEnableCertVerify(connssl->ssl_ctx,
+  err = SSLSetEnableCertVerify(BACKEND->ssl_ctx,
                                conn->ssl_config.verifypeer?true:false);
   if(err != noErr) {
     failf(data, "SSL: SSLSetEnableCertVerify() failed: OSStatus %d", err);
@@ -1533,7 +1612,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
    * Both hostname check and SNI require SSLSetPeerDomainName().
    * Also: the verifyhost setting influences SNI usage */
   if(conn->ssl_config.verifyhost) {
-    err = SSLSetPeerDomainName(connssl->ssl_ctx, hostname,
+    err = SSLSetPeerDomainName(BACKEND->ssl_ctx, hostname,
     strlen(hostname));
 
     if(err != noErr) {
@@ -1559,11 +1638,11 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
      higher priority, but it's probably better that we not connect at all than
      to give the user a false sense of security if the server only supports
      insecure ciphers. (Note: We don't care about SSLv2-only ciphers.) */
-  (void)SSLGetNumberSupportedCiphers(connssl->ssl_ctx, &all_ciphers_count);
+  (void)SSLGetNumberSupportedCiphers(BACKEND->ssl_ctx, &all_ciphers_count);
   all_ciphers = malloc(all_ciphers_count*sizeof(SSLCipherSuite));
   allowed_ciphers = malloc(all_ciphers_count*sizeof(SSLCipherSuite));
   if(all_ciphers && allowed_ciphers &&
-     SSLGetSupportedCiphers(connssl->ssl_ctx, all_ciphers,
+     SSLGetSupportedCiphers(BACKEND->ssl_ctx, all_ciphers,
        &all_ciphers_count) == noErr) {
     for(i = 0UL ; i < all_ciphers_count ; i++) {
 #if CURL_BUILD_MAC
@@ -1645,7 +1724,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
           break;
       }
     }
-    err = SSLSetEnabledCiphers(connssl->ssl_ctx, allowed_ciphers,
+    err = SSLSetEnabledCiphers(BACKEND->ssl_ctx, allowed_ciphers,
                                allowed_ciphers_count);
     if(err != noErr) {
       failf(data, "SSL: SSLSetEnabledCiphers() failed: OSStatus %d", err);
@@ -1666,9 +1745,9 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
      specifically doesn't want us doing that: */
   if(SSLSetSessionOption != NULL) {
     /* TODO s/data->set.ssl.enable_beast/SSL_SET_OPTION(enable_beast)/g */
-    SSLSetSessionOption(connssl->ssl_ctx, kSSLSessionOptionSendOneByteRecord,
+    SSLSetSessionOption(BACKEND->ssl_ctx, kSSLSessionOptionSendOneByteRecord,
                       !data->set.ssl.enable_beast);
-    SSLSetSessionOption(connssl->ssl_ctx, kSSLSessionOptionFalseStart,
+    SSLSetSessionOption(BACKEND->ssl_ctx, kSSLSessionOptionFalseStart,
                       data->set.ssl.falsestart); /* false start support */
   }
 #endif /* CURL_BUILD_MAC_10_9 || CURL_BUILD_IOS_7 */
@@ -1682,7 +1761,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
     if(!Curl_ssl_getsessionid(conn, (void **)&ssl_sessionid,
                               &ssl_sessionid_len, sockindex)) {
       /* we got a session id, use it! */
-      err = SSLSetPeerID(connssl->ssl_ctx, ssl_sessionid, ssl_sessionid_len);
+      err = SSLSetPeerID(BACKEND->ssl_ctx, ssl_sessionid, ssl_sessionid_len);
       Curl_ssl_sessionid_unlock(conn);
       if(err != noErr) {
         failf(data, "SSL: SSLSetPeerID() failed: OSStatus %d", err);
@@ -1700,7 +1779,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
                 verifypeer, SSL_CONN_CONFIG(verifyhost), hostname, port);
       ssl_sessionid_len = strlen(ssl_sessionid);
 
-      err = SSLSetPeerID(connssl->ssl_ctx, ssl_sessionid, ssl_sessionid_len);
+      err = SSLSetPeerID(BACKEND->ssl_ctx, ssl_sessionid, ssl_sessionid_len);
       if(err != noErr) {
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "SSL: SSLSetPeerID() failed: OSStatus %d", err);
@@ -1717,7 +1796,7 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
     }
   }
 
-  err = SSLSetIOFuncs(connssl->ssl_ctx, SocketRead, SocketWrite);
+  err = SSLSetIOFuncs(BACKEND->ssl_ctx, SocketRead, SocketWrite);
   if(err != noErr) {
     failf(data, "SSL: SSLSetIOFuncs() failed: OSStatus %d", err);
     return CURLE_SSL_CONNECT_ERROR;
@@ -1727,8 +1806,8 @@ static CURLcode darwinssl_connect_step1(struct connectdata *conn,
   /* We need to store the FD in a constant memory address, because
    * SSLSetConnection() will not copy that address. I've found that
    * conn->sock[sockindex] may change on its own. */
-  connssl->ssl_sockfd = sockfd;
-  err = SSLSetConnection(connssl->ssl_ctx, connssl);
+  BACKEND->ssl_sockfd = sockfd;
+  err = SSLSetConnection(BACKEND->ssl_ctx, connssl);
   if(err != noErr) {
     failf(data, "SSL: SSLSetConnection() failed: %d", err);
     return CURLE_SSL_CONNECT_ERROR;
@@ -1791,7 +1870,7 @@ static int read_cert(const char *file, unsigned char **out, size_t *outlen)
 {
   int fd;
   ssize_t n, len = 0, cap = 512;
-  unsigned char buf[cap], *data;
+  unsigned char buf[512], *data;
 
   fd = open(file, 0);
   if(fd < 0)
@@ -1869,6 +1948,8 @@ static int append_cert_to_array(struct Curl_easy *data,
                                 CFMutableArrayRef array)
 {
     CFDataRef certdata = CFDataCreate(kCFAllocatorDefault, buf, buflen);
+    char *certp;
+    CURLcode result;
     if(!certdata) {
       failf(data, "SSL: failed to allocate array for CA certificate");
       return CURLE_OUT_OF_MEMORY;
@@ -1883,25 +1964,10 @@ static int append_cert_to_array(struct Curl_easy *data,
     }
 
     /* Check if cacert is valid. */
-    CFStringRef subject = CopyCertSubject(cacert);
-    if(subject) {
-      char subject_cbuf[128];
-      memset(subject_cbuf, 0, 128);
-      if(!CFStringGetCString(subject,
-                            subject_cbuf,
-                            128,
-                            kCFStringEncodingUTF8)) {
-        CFRelease(cacert);
-        failf(data, "SSL: invalid CA certificate subject");
-        return CURLE_SSL_CACERT;
-      }
-      CFRelease(subject);
-    }
-    else {
-      CFRelease(cacert);
-      failf(data, "SSL: invalid CA certificate");
-      return CURLE_SSL_CACERT;
-    }
+    result = CopyCertSubject(data, cacert, &certp);
+    if(result)
+      return result;
+    free(certp);
 
     CFArrayAppendValue(array, cacert);
     CFRelease(cacert);
@@ -2027,12 +2093,13 @@ static int verify_cert(const char *cafile, struct Curl_easy *data,
 }
 
 #ifdef DARWIN_SSL_PINNEDPUBKEY
-static CURLcode pkp_pin_peer_pubkey(struct SessionHandle *data,
+static CURLcode pkp_pin_peer_pubkey(struct Curl_easy *data,
                                     SSLContextRef ctx,
                                     const char *pinnedpubkey)
 {  /* Scratch */
   size_t pubkeylen, realpubkeylen, spkiHeaderLength = 24;
-  unsigned char *pubkey = NULL, *realpubkey = NULL, *spkiHeader = NULL;
+  unsigned char *pubkey = NULL, *realpubkey = NULL;
+  const unsigned char *spkiHeader = NULL;
   CFDataRef publicKeyBits = NULL;
 
   /* Result is returned to caller */
@@ -2075,7 +2142,7 @@ static CURLcode pkp_pin_peer_pubkey(struct SessionHandle *data,
 #endif /* DARWIN_SSL_PINNEDPUBKEY_V2 */
 
     pubkeylen = CFDataGetLength(publicKeyBits);
-    pubkey = CFDataGetBytePtr(publicKeyBits);
+    pubkey = (unsigned char *)CFDataGetBytePtr(publicKeyBits);
 
     switch(pubkeylen) {
       case 526:
@@ -2148,12 +2215,12 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
               || ssl_connect_2_writing == connssl->connecting_state);
 
   /* Here goes nothing: */
-  err = SSLHandshake(connssl->ssl_ctx);
+  err = SSLHandshake(BACKEND->ssl_ctx);
 
   if(err != noErr) {
     switch(err) {
       case errSSLWouldBlock:  /* they're not done with us yet */
-        connssl->connecting_state = connssl->ssl_direction ?
+        connssl->connecting_state = BACKEND->ssl_direction ?
             ssl_connect_2_writing : ssl_connect_2_reading;
         return CURLE_OK;
 
@@ -2162,7 +2229,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
       case -9841:
         if(SSL_CONN_CONFIG(CAfile) && SSL_CONN_CONFIG(verifypeer)) {
           int res = verify_cert(SSL_CONN_CONFIG(CAfile), data,
-                                connssl->ssl_ctx);
+                                BACKEND->ssl_ctx);
           if(res != CURLE_OK)
             return res;
         }
@@ -2240,7 +2307,7 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
 
 #ifdef DARWIN_SSL_PINNEDPUBKEY
     if(data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]) {
-      CURLcode result = pkp_pin_peer_pubkey(data, connssl->ssl_ctx,
+      CURLcode result = pkp_pin_peer_pubkey(data, BACKEND->ssl_ctx,
                             data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG]);
       if(result) {
         failf(data, "SSL: public key does not match pinned public key!");
@@ -2250,8 +2317,8 @@ darwinssl_connect_step2(struct connectdata *conn, int sockindex)
 #endif /* DARWIN_SSL_PINNEDPUBKEY */
 
     /* Informational message */
-    (void)SSLGetNegotiatedCipher(connssl->ssl_ctx, &cipher);
-    (void)SSLGetNegotiatedProtocolVersion(connssl->ssl_ctx, &protocol);
+    (void)SSLGetNegotiatedCipher(BACKEND->ssl_ctx, &cipher);
+    (void)SSLGetNegotiatedProtocolVersion(BACKEND->ssl_ctx, &protocol);
     switch(protocol) {
       case kSSLProtocol2:
         infof(data, "SSL 2.0 connection using %s\n",
@@ -2292,36 +2359,32 @@ show_verbose_server_cert(struct connectdata *conn,
 {
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  CFStringRef server_cert_summary;
-  char server_cert_summary_c[128];
   CFArrayRef server_certs = NULL;
   SecCertificateRef server_cert;
   OSStatus err;
   CFIndex i, count;
   SecTrustRef trust = NULL;
 
-  if(!connssl->ssl_ctx)
+  if(!BACKEND->ssl_ctx)
     return;
 
 #if CURL_BUILD_MAC_10_7 || CURL_BUILD_IOS
 #if CURL_BUILD_IOS
 #pragma unused(server_certs)
-  err = SSLCopyPeerTrust(connssl->ssl_ctx, &trust);
+  err = SSLCopyPeerTrust(BACKEND->ssl_ctx, &trust);
   /* For some reason, SSLCopyPeerTrust() can return noErr and yet return
      a null trust, so be on guard for that: */
   if(err == noErr && trust) {
     count = SecTrustGetCertificateCount(trust);
     for(i = 0L ; i < count ; i++) {
+      CURLcode result;
+      char *certp;
       server_cert = SecTrustGetCertificateAtIndex(trust, i);
-      server_cert_summary = CopyCertSubject(server_cert);
-      memset(server_cert_summary_c, 0, 128);
-      if(CFStringGetCString(server_cert_summary,
-                            server_cert_summary_c,
-                            128,
-                            kCFStringEncodingUTF8)) {
-        infof(data, "Server certificate: %s\n", server_cert_summary_c);
+      result = CopyCertSubject(data, server_cert, &certp);
+      if(!result) {
+        infof(data, "Server certificate: %s\n", certp);
+        free(certp);
       }
-      CFRelease(server_cert_summary);
     }
     CFRelease(trust);
   }
@@ -2334,45 +2397,40 @@ show_verbose_server_cert(struct connectdata *conn,
      Lion or later. */
   if(SecTrustEvaluateAsync != NULL) {
 #pragma unused(server_certs)
-    err = SSLCopyPeerTrust(connssl->ssl_ctx, &trust);
+    err = SSLCopyPeerTrust(BACKEND->ssl_ctx, &trust);
     /* For some reason, SSLCopyPeerTrust() can return noErr and yet return
        a null trust, so be on guard for that: */
     if(err == noErr && trust) {
       count = SecTrustGetCertificateCount(trust);
       for(i = 0L ; i < count ; i++) {
+        char *certp;
+        CURLcode result;
         server_cert = SecTrustGetCertificateAtIndex(trust, i);
-        server_cert_summary = CopyCertSubject(server_cert);
-        memset(server_cert_summary_c, 0, 128);
-        if(CFStringGetCString(server_cert_summary,
-                              server_cert_summary_c,
-                              128,
-                              kCFStringEncodingUTF8)) {
-          infof(data, "Server certificate: %s\n", server_cert_summary_c);
+        result = CopyCertSubject(data, server_cert, &certp);
+        if(!result) {
+          infof(data, "Server certificate: %s\n", certp);
+          free(certp);
         }
-        CFRelease(server_cert_summary);
       }
       CFRelease(trust);
     }
   }
   else {
 #if CURL_SUPPORT_MAC_10_8
-    err = SSLCopyPeerCertificates(connssl->ssl_ctx, &server_certs);
+    err = SSLCopyPeerCertificates(BACKEND->ssl_ctx, &server_certs);
     /* Just in case SSLCopyPeerCertificates() returns null too... */
     if(err == noErr && server_certs) {
       count = CFArrayGetCount(server_certs);
       for(i = 0L ; i < count ; i++) {
+        char *certp;
+        CURLcode result;
         server_cert = (SecCertificateRef)CFArrayGetValueAtIndex(server_certs,
                                                                 i);
-
-        server_cert_summary = CopyCertSubject(server_cert);
-        memset(server_cert_summary_c, 0, 128);
-        if(CFStringGetCString(server_cert_summary,
-                              server_cert_summary_c,
-                              128,
-                              kCFStringEncodingUTF8)) {
-          infof(data, "Server certificate: %s\n", server_cert_summary_c);
+        result = CopyCertSubject(data, server_cert, &certp);
+        if(!result) {
+          infof(data, "Server certificate: %s\n", certp);
+          free(certp);
         }
-        CFRelease(server_cert_summary);
       }
       CFRelease(server_certs);
     }
@@ -2381,20 +2439,18 @@ show_verbose_server_cert(struct connectdata *conn,
 #endif /* CURL_BUILD_IOS */
 #else
 #pragma unused(trust)
-  err = SSLCopyPeerCertificates(connssl->ssl_ctx, &server_certs);
+  err = SSLCopyPeerCertificates(BACKEND->ssl_ctx, &server_certs);
   if(err == noErr) {
     count = CFArrayGetCount(server_certs);
     for(i = 0L ; i < count ; i++) {
+      CURLcode result;
+      char *certp;
       server_cert = (SecCertificateRef)CFArrayGetValueAtIndex(server_certs, i);
-      server_cert_summary = CopyCertSubject(server_cert);
-      memset(server_cert_summary_c, 0, 128);
-      if(CFStringGetCString(server_cert_summary,
-                            server_cert_summary_c,
-                            128,
-                            kCFStringEncodingUTF8)) {
-        infof(data, "Server certificate: %s\n", server_cert_summary_c);
+      result = CopyCertSubject(data, server_cert, &certp);
+      if(!result) {
+        infof(data, "Server certificate: %s\n", certp);
+        free(certp);
       }
-      CFRelease(server_cert_summary);
     }
     CFRelease(server_certs);
   }
@@ -2443,7 +2499,7 @@ darwinssl_connect_common(struct connectdata *conn,
     return CURLE_OK;
   }
 
-  if(ssl_connect_1==connssl->connecting_state) {
+  if(ssl_connect_1 == connssl->connecting_state) {
     /* Find out how much more time we're allowed */
     timeout_ms = Curl_timeleft(data, NULL, TRUE);
 
@@ -2538,17 +2594,13 @@ darwinssl_connect_common(struct connectdata *conn,
   return CURLE_OK;
 }
 
-CURLcode
-Curl_darwinssl_connect_nonblocking(struct connectdata *conn,
-                                   int sockindex,
-                                   bool *done)
+static CURLcode Curl_darwinssl_connect_nonblocking(struct connectdata *conn,
+                                                   int sockindex, bool *done)
 {
   return darwinssl_connect_common(conn, sockindex, TRUE, done);
 }
 
-CURLcode
-Curl_darwinssl_connect(struct connectdata *conn,
-                       int sockindex)
+static CURLcode Curl_darwinssl_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -2563,28 +2615,28 @@ Curl_darwinssl_connect(struct connectdata *conn,
   return CURLE_OK;
 }
 
-void Curl_darwinssl_close(struct connectdata *conn, int sockindex)
+static void Curl_darwinssl_close(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
-  if(connssl->ssl_ctx) {
-    (void)SSLClose(connssl->ssl_ctx);
+  if(BACKEND->ssl_ctx) {
+    (void)SSLClose(BACKEND->ssl_ctx);
 #if CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS
     if(SSLCreateContext != NULL)
-      CFRelease(connssl->ssl_ctx);
+      CFRelease(BACKEND->ssl_ctx);
 #if CURL_SUPPORT_MAC_10_8
     else
-      (void)SSLDisposeContext(connssl->ssl_ctx);
+      (void)SSLDisposeContext(BACKEND->ssl_ctx);
 #endif  /* CURL_SUPPORT_MAC_10_8 */
 #else
-    (void)SSLDisposeContext(connssl->ssl_ctx);
+    (void)SSLDisposeContext(BACKEND->ssl_ctx);
 #endif /* CURL_BUILD_MAC_10_8 || CURL_BUILD_IOS */
-    connssl->ssl_ctx = NULL;
+    BACKEND->ssl_ctx = NULL;
   }
-  connssl->ssl_sockfd = 0;
+  BACKEND->ssl_sockfd = 0;
 }
 
-int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
@@ -2593,7 +2645,7 @@ int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
   int rc;
   char buf[120];
 
-  if(!connssl->ssl_ctx)
+  if(!BACKEND->ssl_ctx)
     return 0;
 
   if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
@@ -2637,7 +2689,7 @@ int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex)
   return rc;
 }
 
-void Curl_darwinssl_session_free(void *ptr)
+static void Curl_darwinssl_session_free(void *ptr)
 {
   /* ST, as of iOS 5 and Mountain Lion, has no public method of deleting a
      cached session ID inside the Security framework. There is a private
@@ -2648,7 +2700,7 @@ void Curl_darwinssl_session_free(void *ptr)
   Curl_safefree(ptr);
 }
 
-size_t Curl_darwinssl_version(char *buffer, size_t size)
+static size_t Curl_darwinssl_version(char *buffer, size_t size)
 {
   return snprintf(buffer, size, "SecureTransport");
 }
@@ -2661,14 +2713,14 @@ size_t Curl_darwinssl_version(char *buffer, size_t size)
  *     0 means the connection has been closed
  *    -1 means the connection status is unknown
  */
-int Curl_darwinssl_check_cxn(struct connectdata *conn)
+static int Curl_darwinssl_check_cxn(struct connectdata *conn)
 {
   struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
   OSStatus err;
   SSLSessionState state;
 
-  if(connssl->ssl_ctx) {
-    err = SSLGetSessionState(connssl->ssl_ctx, &state);
+  if(BACKEND->ssl_ctx) {
+    err = SSLGetSessionState(BACKEND->ssl_ctx, &state);
     if(err == noErr)
       return state == kSSLConnected || state == kSSLHandshake;
     return -1;
@@ -2676,15 +2728,15 @@ int Curl_darwinssl_check_cxn(struct connectdata *conn)
   return 0;
 }
 
-bool Curl_darwinssl_data_pending(const struct connectdata *conn,
-                                 int connindex)
+static bool Curl_darwinssl_data_pending(const struct connectdata *conn,
+                                        int connindex)
 {
   const struct ssl_connect_data *connssl = &conn->ssl[connindex];
   OSStatus err;
   size_t buffer;
 
-  if(connssl->ssl_ctx) {  /* SSL is in use */
-    err = SSLGetBufferedReadSize(connssl->ssl_ctx, &buffer);
+  if(BACKEND->ssl_ctx) {  /* SSL is in use */
+    err = SSLGetBufferedReadSize(BACKEND->ssl_ctx, &buffer);
     if(err == noErr)
       return buffer > 0UL;
     return false;
@@ -2693,14 +2745,16 @@ bool Curl_darwinssl_data_pending(const struct connectdata *conn,
     return false;
 }
 
-CURLcode Curl_darwinssl_random(unsigned char *entropy,
-                               size_t length)
+static CURLcode Curl_darwinssl_random(struct Curl_easy *data UNUSED_PARAM,
+                                      unsigned char *entropy, size_t length)
 {
   /* arc4random_buf() isn't available on cats older than Lion, so let's
      do this manually for the benefit of the older cats. */
   size_t i;
   u_int32_t random_number = 0;
 
+  (void)data;
+
   for(i = 0 ; i < length ; i++) {
     if(i % sizeof(u_int32_t) == 0)
       random_number = arc4random();
@@ -2711,25 +2765,26 @@ CURLcode Curl_darwinssl_random(unsigned char *entropy,
   return CURLE_OK;
 }
 
-void Curl_darwinssl_md5sum(unsigned char *tmp, /* input */
-                           size_t tmplen,
-                           unsigned char *md5sum, /* output */
-                           size_t md5len)
+static CURLcode Curl_darwinssl_md5sum(unsigned char *tmp, /* input */
+                                      size_t tmplen,
+                                      unsigned char *md5sum, /* output */
+                                      size_t md5len)
 {
   (void)md5len;
   (void)CC_MD5(tmp, (CC_LONG)tmplen, md5sum);
+  return CURLE_OK;
 }
 
-void Curl_darwinssl_sha256sum(unsigned char *tmp, /* input */
-                           size_t tmplen,
-                           unsigned char *sha256sum, /* output */
-                           size_t sha256len)
+static void Curl_darwinssl_sha256sum(const unsigned char *tmp, /* input */
+                                     size_t tmplen,
+                                     unsigned char *sha256sum, /* output */
+                                     size_t sha256len)
 {
-  assert(sha256len >= SHA256_DIGEST_LENGTH);
+  assert(sha256len >= CURL_SHA256_DIGEST_LENGTH);
   (void)CC_SHA256(tmp, (CC_LONG)tmplen, sha256sum);
 }
 
-bool Curl_darwinssl_false_start(void)
+static bool Curl_darwinssl_false_start(void)
 {
 #if CURL_BUILD_MAC_10_9 || CURL_BUILD_IOS_7
   if(SSLSetSessionOption != NULL)
@@ -2764,15 +2819,15 @@ static ssize_t darwinssl_send(struct connectdata *conn,
      over again with no new data until it quits returning errSSLWouldBlock. */
 
   /* Do we have buffered data to write from the last time we were called? */
-  if(connssl->ssl_write_buffered_length) {
+  if(BACKEND->ssl_write_buffered_length) {
     /* Write the buffered data: */
-    err = SSLWrite(connssl->ssl_ctx, NULL, 0UL, &processed);
+    err = SSLWrite(BACKEND->ssl_ctx, NULL, 0UL, &processed);
     switch(err) {
       case noErr:
         /* processed is always going to be 0 because we didn't write to
            the buffer, so return how much was written to the socket */
-        processed = connssl->ssl_write_buffered_length;
-        connssl->ssl_write_buffered_length = 0UL;
+        processed = BACKEND->ssl_write_buffered_length;
+        BACKEND->ssl_write_buffered_length = 0UL;
         break;
       case errSSLWouldBlock: /* argh, try again */
         *curlcode = CURLE_AGAIN;
@@ -2785,13 +2840,13 @@ static ssize_t darwinssl_send(struct connectdata *conn,
   }
   else {
     /* We've got new data to write: */
-    err = SSLWrite(connssl->ssl_ctx, mem, len, &processed);
+    err = SSLWrite(BACKEND->ssl_ctx, mem, len, &processed);
     if(err != noErr) {
       switch(err) {
         case errSSLWouldBlock:
           /* Data was buffered but not sent, we have to tell the caller
              to try sending again, and remember how much was buffered */
-          connssl->ssl_write_buffered_length = len;
+          BACKEND->ssl_write_buffered_length = len;
           *curlcode = CURLE_AGAIN;
           return -1L;
         default:
@@ -2813,7 +2868,7 @@ static ssize_t darwinssl_recv(struct connectdata *conn,
   /*struct Curl_easy *data = conn->data;*/
   struct ssl_connect_data *connssl = &conn->ssl[num];
   size_t processed = 0UL;
-  OSStatus err = SSLRead(connssl->ssl_ctx, buf, buffersize, &processed);
+  OSStatus err = SSLRead(BACKEND->ssl_ctx, buf, buffersize, &processed);
 
   if(err != noErr) {
     switch(err) {
@@ -2844,4 +2899,52 @@ static ssize_t darwinssl_recv(struct connectdata *conn,
   return (ssize_t)processed;
 }
 
+static void *Curl_darwinssl_get_internals(struct ssl_connect_data *connssl,
+                                          CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->ssl_ctx;
+}
+
+const struct Curl_ssl Curl_ssl_darwinssl = {
+  { CURLSSLBACKEND_DARWINSSL, "darwinssl" }, /* info */
+
+  0, /* have_ca_path */
+  0, /* have_certinfo */
+#ifdef DARWIN_SSL_PINNEDPUBKEY
+  1, /* have_pinnedpubkey */
+#else
+  0, /* have_pinnedpubkey */
+#endif /* DARWIN_SSL_PINNEDPUBKEY */
+  0, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_none_init,                     /* init */
+  Curl_none_cleanup,                  /* cleanup */
+  Curl_darwinssl_version,             /* version */
+  Curl_darwinssl_check_cxn,           /* check_cxn */
+  Curl_darwinssl_shutdown,            /* shutdown */
+  Curl_darwinssl_data_pending,        /* data_pending */
+  Curl_darwinssl_random,              /* random */
+  Curl_none_cert_status_request,      /* cert_status_request */
+  Curl_darwinssl_connect,             /* connect */
+  Curl_darwinssl_connect_nonblocking, /* connect_nonblocking */
+  Curl_darwinssl_get_internals,       /* get_internals */
+  Curl_darwinssl_close,               /* close */
+  Curl_none_close_all,                /* close_all */
+  Curl_darwinssl_session_free,        /* session_free */
+  Curl_none_set_engine,               /* set_engine */
+  Curl_none_set_engine_default,       /* set_engine_default */
+  Curl_none_engines_list,             /* engines_list */
+  Curl_darwinssl_false_start,         /* false_start */
+  Curl_darwinssl_md5sum,              /* md5sum */
+  Curl_darwinssl_sha256sum            /* sha256sum */
+};
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif
+
 #endif /* USE_DARWINSSL */
diff --git a/lib/vtls/darwinssl.h b/lib/vtls/darwinssl.h
index fd372ff..23c7f70 100644
--- a/lib/vtls/darwinssl.h
+++ b/lib/vtls/darwinssl.h
@@ -26,75 +26,7 @@
 
 #ifdef USE_DARWINSSL
 
-CURLcode Curl_darwinssl_connect(struct connectdata *conn, int sockindex);
-
-CURLcode Curl_darwinssl_connect_nonblocking(struct connectdata *conn,
-                                            int sockindex,
-                                            bool *done);
-
-/* close a SSL connection */
-void Curl_darwinssl_close(struct connectdata *conn, int sockindex);
-
-void Curl_darwinssl_session_free(void *ptr);
-size_t Curl_darwinssl_version(char *buffer, size_t size);
-int Curl_darwinssl_shutdown(struct connectdata *conn, int sockindex);
-int Curl_darwinssl_check_cxn(struct connectdata *conn);
-bool Curl_darwinssl_data_pending(const struct connectdata *conn,
-                                 int connindex);
-
-CURLcode Curl_darwinssl_random(unsigned char *entropy,
-                               size_t length);
-void Curl_darwinssl_md5sum(unsigned char *tmp, /* input */
-                           size_t tmplen,
-                           unsigned char *md5sum, /* output */
-                           size_t md5len);
-void Curl_darwinssl_sha256sum(unsigned char *tmp, /* input */
-                           size_t tmplen,
-                           unsigned char *sha256sum, /* output */
-                           size_t sha256len);
-bool Curl_darwinssl_false_start(void);
-
-/* Set the API backend definition to SecureTransport */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_DARWINSSL
-
-/* pinned public key support tests */
-
-/* version 1 supports macOS 10.12+ and iOS 10+ */
-#if ((TARGET_OS_IPHONE && __IPHONE_OS_VERSION_MIN_REQUIRED >= 100000) || \
-    (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED  >= 101200))
-#define DARWIN_SSL_PINNEDPUBKEY_V1 1
-#endif
-
-/* version 2 supports MacOSX 10.7+ */
-#if (!TARGET_OS_IPHONE && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
-#define DARWIN_SSL_PINNEDPUBKEY_V2 1
-#endif
-
-#if defined(DARWIN_SSL_PINNEDPUBKEY_V1) || defined(DARWIN_SSL_PINNEDPUBKEY_V2)
-/* this backend supports CURLOPT_PINNEDPUBLICKEY */
-#define DARWIN_SSL_PINNEDPUBKEY 1
-#define have_curlssl_pinnedpubkey 1
-#endif /* DARWIN_SSL_PINNEDPUBKEY */
-
-/* API setup for SecureTransport */
-#define curlssl_init() (1)
-#define curlssl_cleanup() Curl_nop_stmt
-#define curlssl_connect Curl_darwinssl_connect
-#define curlssl_connect_nonblocking Curl_darwinssl_connect_nonblocking
-#define curlssl_session_free(x) Curl_darwinssl_session_free(x)
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_darwinssl_close
-#define curlssl_shutdown(x,y) 0
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_darwinssl_version
-#define curlssl_check_cxn Curl_darwinssl_check_cxn
-#define curlssl_data_pending(x,y) Curl_darwinssl_data_pending(x, y)
-#define curlssl_random(x,y,z) ((void)x, Curl_darwinssl_random(y,z))
-#define curlssl_md5sum(a,b,c,d) Curl_darwinssl_md5sum(a,b,c,d)
-#define curlssl_sha256sum(a,b,c,d) Curl_darwinssl_sha256sum(a,b,c,d)
-#define curlssl_false_start() Curl_darwinssl_false_start()
+extern const struct Curl_ssl Curl_ssl_darwinssl;
 
 #endif /* USE_DARWINSSL */
 #endif /* HEADER_CURL_DARWINSSL_H */
diff --git a/lib/vtls/gskit.c b/lib/vtls/gskit.c
index bf75bdd..ba5faef 100644
--- a/lib/vtls/gskit.c
+++ b/lib/vtls/gskit.c
@@ -98,6 +98,14 @@
 #define CURL_GSKPROTO_TLSV12_MASK        (1 << CURL_GSKPROTO_TLSV12)
 #define CURL_GSKPROTO_LAST      5
 
+struct ssl_backend_data {
+  gsk_handle handle;
+  int iocport;
+  int localfd;
+  int remotefd;
+};
+
+#define BACKEND connssl->backend
 
 /* Supported ciphers. */
 typedef struct {
@@ -427,7 +435,7 @@ static CURLcode set_ciphers(struct connectdata *conn,
 }
 
 
-int Curl_gskit_init(void)
+static int Curl_gskit_init(void)
 {
   /* No initialisation needed. */
 
@@ -435,7 +443,7 @@ int Curl_gskit_init(void)
 }
 
 
-void Curl_gskit_cleanup(void)
+static void Curl_gskit_cleanup(void)
 {
   /* Nothing to do. */
 }
@@ -495,14 +503,14 @@ static void cancel_async_handshake(struct connectdata *conn, int sockindex)
   Qso_OverlappedIO_t cstat;
 
   if(QsoCancelOperation(conn->sock[sockindex], 0) > 0)
-    QsoWaitForIOCompletion(connssl->iocport, &cstat, (struct timeval *) NULL);
+    QsoWaitForIOCompletion(BACKEND->iocport, &cstat, (struct timeval *) NULL);
 }
 
 
 static void close_async_handshake(struct ssl_connect_data *connssl)
 {
-  QsoDestroyIOCompletionPort(connssl->iocport);
-  connssl->iocport = -1;
+  QsoDestroyIOCompletionPort(BACKEND->iocport);
+  BACKEND->iocport = -1;
 }
 
 /* SSL over SSL
@@ -620,12 +628,12 @@ static int pipe_ssloverssl(struct connectdata *conn, int sockindex,
   FD_ZERO(&fds_write);
   n = -1;
   if(directions & SOS_READ) {
-    FD_SET(connssl->remotefd, &fds_write);
-    n = connssl->remotefd;
+    FD_SET(BACKEND->remotefd, &fds_write);
+    n = BACKEND->remotefd;
   }
   if(directions & SOS_WRITE) {
-    FD_SET(connssl->remotefd, &fds_read);
-    n = connssl->remotefd;
+    FD_SET(BACKEND->remotefd, &fds_read);
+    n = BACKEND->remotefd;
     FD_SET(conn->sock[sockindex], &fds_write);
     if(n < conn->sock[sockindex])
       n = conn->sock[sockindex];
@@ -634,14 +642,15 @@ static int pipe_ssloverssl(struct connectdata *conn, int sockindex,
   if(i < 0)
     return -1;  /* Select error. */
 
-  if(FD_ISSET(connssl->remotefd, &fds_write)) {
+  if(FD_ISSET(BACKEND->remotefd, &fds_write)) {
     /* Try getting data from HTTPS proxy and pipe it upstream. */
     n = 0;
-    i = gsk_secure_soc_read(connproxyssl->handle, buf, sizeof buf, &n);
+    i = gsk_secure_soc_read(connproxyssl->backend->handle,
+                            buf, sizeof buf, &n);
     switch(i) {
     case GSK_OK:
       if(n) {
-        i = write(connssl->remotefd, buf, n);
+        i = write(BACKEND->remotefd, buf, n);
         if(i < 0)
           return -1;
         ret = 1;
@@ -655,14 +664,14 @@ static int pipe_ssloverssl(struct connectdata *conn, int sockindex,
     }
   }
 
-  if(FD_ISSET(connssl->remotefd, &fds_read) &&
+  if(FD_ISSET(BACKEND->remotefd, &fds_read) &&
      FD_ISSET(conn->sock[sockindex], &fds_write)) {
     /* Pipe data to HTTPS proxy. */
-    n = read(connssl->remotefd, buf, sizeof buf);
+    n = read(BACKEND->remotefd, buf, sizeof buf);
     if(n < 0)
       return -1;
     if(n) {
-      i = gsk_secure_soc_write(connproxyssl->handle, buf, n, &m);
+      i = gsk_secure_soc_write(connproxyssl->backend->handle, buf, n, &m);
       if(i != GSK_OK || n != m)
         return -1;
       ret = 1;
@@ -676,23 +685,23 @@ static int pipe_ssloverssl(struct connectdata *conn, int sockindex,
 static void close_one(struct ssl_connect_data *connssl,
                       struct connectdata *conn, int sockindex)
 {
-  if(connssl->handle) {
-    gskit_status(conn->data, gsk_secure_soc_close(&connssl->handle),
+  if(BACKEND->handle) {
+    gskit_status(conn->data, gsk_secure_soc_close(&BACKEND->handle),
               "gsk_secure_soc_close()", 0);
     /* Last chance to drain output. */
     while(pipe_ssloverssl(conn, sockindex, SOS_WRITE) > 0)
       ;
-    connssl->handle = (gsk_handle) NULL;
-    if(connssl->localfd >= 0) {
-      close(connssl->localfd);
-      connssl->localfd = -1;
+    BACKEND->handle = (gsk_handle) NULL;
+    if(BACKEND->localfd >= 0) {
+      close(BACKEND->localfd);
+      BACKEND->localfd = -1;
     }
-    if(connssl->remotefd >= 0) {
-      close(connssl->remotefd);
-      connssl->remotefd = -1;
+    if(BACKEND->remotefd >= 0) {
+      close(BACKEND->remotefd);
+      BACKEND->remotefd = -1;
     }
   }
-  if(connssl->iocport >= 0)
+  if(BACKEND->iocport >= 0)
     close_async_handshake(connssl);
 }
 
@@ -700,13 +709,14 @@ static void close_one(struct ssl_connect_data *connssl,
 static ssize_t gskit_send(struct connectdata *conn, int sockindex,
                            const void *mem, size_t len, CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
   CURLcode cc = CURLE_SEND_ERROR;
   int written;
 
   if(pipe_ssloverssl(conn, sockindex, SOS_WRITE) >= 0) {
     cc = gskit_status(data,
-                      gsk_secure_soc_write(conn->ssl[sockindex].handle,
+                      gsk_secure_soc_write(BACKEND->handle,
                                            (char *) mem, (int) len, &written),
                       "gsk_secure_soc_write()", CURLE_SEND_ERROR);
     if(cc == CURLE_OK)
@@ -724,6 +734,7 @@ static ssize_t gskit_send(struct connectdata *conn, int sockindex,
 static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
                            size_t buffersize, CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[num];
   struct Curl_easy *data = conn->data;
   int buffsize;
   int nread;
@@ -731,7 +742,7 @@ static ssize_t gskit_recv(struct connectdata *conn, int num, char *buf,
 
   if(pipe_ssloverssl(conn, num, SOS_READ) >= 0) {
     buffsize = buffersize > (size_t) INT_MAX? INT_MAX: (int) buffersize;
-    cc = gskit_status(data, gsk_secure_soc_read(conn->ssl[num].handle,
+    cc = gskit_status(data, gsk_secure_soc_read(BACKEND->handle,
                                                 buf, buffsize, &nread),
                       "gsk_secure_soc_read()", CURLE_RECV_ERROR);
   }
@@ -806,10 +817,10 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
 
   /* Create SSL environment, start (preferably asynchronous) handshake. */
 
-  connssl->handle = (gsk_handle) NULL;
-  connssl->iocport = -1;
-  connssl->localfd = -1;
-  connssl->remotefd = -1;
+  BACKEND->handle = (gsk_handle) NULL;
+  BACKEND->iocport = -1;
+  BACKEND->localfd = -1;
+  BACKEND->remotefd = -1;
 
   /* GSKit supports two ways of specifying an SSL context: either by
    *  application identifier (that should have been defined at the system
@@ -842,7 +853,7 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
   }
 
   /* Create secure session. */
-  result = gskit_status(data, gsk_secure_soc_open(envir, &connssl->handle),
+  result = gskit_status(data, gsk_secure_soc_open(envir, &BACKEND->handle),
                         "gsk_secure_soc_open()", CURLE_SSL_CONNECT_ERROR);
   gsk_environment_close(&envir);
   if(result)
@@ -852,18 +863,18 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
   if(conn->proxy_ssl[sockindex].use) {
     if(inetsocketpair(sockpair))
       return CURLE_SSL_CONNECT_ERROR;
-    connssl->localfd = sockpair[0];
-    connssl->remotefd = sockpair[1];
-    setsockopt(connssl->localfd, SOL_SOCKET, SO_RCVBUF,
+    BACKEND->localfd = sockpair[0];
+    BACKEND->remotefd = sockpair[1];
+    setsockopt(BACKEND->localfd, SOL_SOCKET, SO_RCVBUF,
                (void *) sobufsize, sizeof sobufsize);
-    setsockopt(connssl->remotefd, SOL_SOCKET, SO_RCVBUF,
+    setsockopt(BACKEND->remotefd, SOL_SOCKET, SO_RCVBUF,
                (void *) sobufsize, sizeof sobufsize);
-    setsockopt(connssl->localfd, SOL_SOCKET, SO_SNDBUF,
+    setsockopt(BACKEND->localfd, SOL_SOCKET, SO_SNDBUF,
                (void *) sobufsize, sizeof sobufsize);
-    setsockopt(connssl->remotefd, SOL_SOCKET, SO_SNDBUF,
+    setsockopt(BACKEND->remotefd, SOL_SOCKET, SO_SNDBUF,
                (void *) sobufsize, sizeof sobufsize);
-    curlx_nonblock(connssl->localfd, TRUE);
-    curlx_nonblock(connssl->remotefd, TRUE);
+    curlx_nonblock(BACKEND->localfd, TRUE);
+    curlx_nonblock(BACKEND->remotefd, TRUE);
   }
 
   /* Determine which SSL/TLS version should be enabled. */
@@ -897,7 +908,7 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
 
   /* Process SNI. Ignore if not supported (on OS400 < V7R1). */
   if(sni) {
-    result = set_buffer(data, connssl->handle,
+    result = set_buffer(data, BACKEND->handle,
                         GSK_SSL_EXTN_SERVERNAME_REQUEST, sni, TRUE);
     if(result == CURLE_UNSUPPORTED_PROTOCOL)
       result = CURLE_OK;
@@ -911,34 +922,34 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
     if(timeout < 0)
       result = CURLE_OPERATION_TIMEDOUT;
     else
-      result = set_numeric(data, connssl->handle, GSK_HANDSHAKE_TIMEOUT,
+      result = set_numeric(data, BACKEND->handle, GSK_HANDSHAKE_TIMEOUT,
                            (timeout + 999) / 1000);
   }
   if(!result)
-    result = set_numeric(data, connssl->handle, GSK_OS400_READ_TIMEOUT, 1);
+    result = set_numeric(data, BACKEND->handle, GSK_OS400_READ_TIMEOUT, 1);
   if(!result)
-    result = set_numeric(data, connssl->handle, GSK_FD, connssl->localfd >= 0?
-                         connssl->localfd: conn->sock[sockindex]);
+    result = set_numeric(data, BACKEND->handle, GSK_FD, BACKEND->localfd >= 0?
+                         BACKEND->localfd: conn->sock[sockindex]);
   if(!result)
-    result = set_ciphers(conn, connssl->handle, &protoflags);
+    result = set_ciphers(conn, BACKEND->handle, &protoflags);
   if(!protoflags) {
     failf(data, "No SSL protocol/cipher combination enabled");
     result = CURLE_SSL_CIPHER;
   }
   if(!result)
-    result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV2,
+    result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_SSLV2,
                       (protoflags & CURL_GSKPROTO_SSLV2_MASK)?
                       GSK_PROTOCOL_SSLV2_ON: GSK_PROTOCOL_SSLV2_OFF, FALSE);
   if(!result)
-    result = set_enum(data, connssl->handle, GSK_PROTOCOL_SSLV3,
+    result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_SSLV3,
                       (protoflags & CURL_GSKPROTO_SSLV3_MASK)?
                       GSK_PROTOCOL_SSLV3_ON: GSK_PROTOCOL_SSLV3_OFF, FALSE);
   if(!result)
-    result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV1,
+    result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV1,
                       (protoflags & CURL_GSKPROTO_TLSV10_MASK)?
                       GSK_PROTOCOL_TLSV1_ON: GSK_PROTOCOL_TLSV1_OFF, FALSE);
   if(!result) {
-    result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV11,
+    result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV11,
                       (protoflags & CURL_GSKPROTO_TLSV11_MASK)?
                       GSK_TRUE: GSK_FALSE, TRUE);
     if(result == CURLE_UNSUPPORTED_PROTOCOL) {
@@ -950,7 +961,7 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
     }
   }
   if(!result) {
-    result = set_enum(data, connssl->handle, GSK_PROTOCOL_TLSV12,
+    result = set_enum(data, BACKEND->handle, GSK_PROTOCOL_TLSV12,
                       (protoflags & CURL_GSKPROTO_TLSV12_MASK)?
                       GSK_TRUE: GSK_FALSE, TRUE);
     if(result == CURLE_UNSUPPORTED_PROTOCOL) {
@@ -962,18 +973,18 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
     }
   }
   if(!result)
-    result = set_enum(data, connssl->handle, GSK_SERVER_AUTH_TYPE,
+    result = set_enum(data, BACKEND->handle, GSK_SERVER_AUTH_TYPE,
                       verifypeer? GSK_SERVER_AUTH_FULL:
                       GSK_SERVER_AUTH_PASSTHRU, FALSE);
 
   if(!result) {
     /* Start handshake. Try asynchronous first. */
     memset(&commarea, 0, sizeof commarea);
-    connssl->iocport = QsoCreateIOCompletionPort();
-    if(connssl->iocport != -1) {
+    BACKEND->iocport = QsoCreateIOCompletionPort();
+    if(BACKEND->iocport != -1) {
       result = gskit_status(data,
-                            gsk_secure_soc_startInit(connssl->handle,
-                                                     connssl->iocport,
+                            gsk_secure_soc_startInit(BACKEND->handle,
+                                                     BACKEND->iocport,
                                                      &commarea),
                             "gsk_secure_soc_startInit()",
                             CURLE_SSL_CONNECT_ERROR);
@@ -993,7 +1004,7 @@ static CURLcode gskit_connect_step1(struct connectdata *conn, int sockindex)
     }
     else {
       /* No more completion port available. Use synchronous IO. */
-      result = gskit_status(data, gsk_secure_soc_init(connssl->handle),
+      result = gskit_status(data, gsk_secure_soc_init(BACKEND->handle),
                             "gsk_secure_soc_init()", CURLE_SSL_CONNECT_ERROR);
       if(!result) {
         connssl->connecting_state = ssl_connect_3;
@@ -1026,7 +1037,7 @@ static CURLcode gskit_connect_step2(struct connectdata *conn, int sockindex,
       timeout_ms = 0;
     stmv.tv_sec = timeout_ms / 1000;
     stmv.tv_usec = (timeout_ms - stmv.tv_sec * 1000) * 1000;
-    switch(QsoWaitForIOCompletion(connssl->iocport, &cstat, &stmv)) {
+    switch(QsoWaitForIOCompletion(BACKEND->iocport, &cstat, &stmv)) {
     case 1:             /* Operation complete. */
       break;
     case -1:            /* An error occurred: handshake still in progress. */
@@ -1075,7 +1086,7 @@ static CURLcode gskit_connect_step3(struct connectdata *conn, int sockindex)
 
   /* SSL handshake done: gather certificate info and verify host. */
 
-  if(gskit_status(data, gsk_attribute_get_cert_info(connssl->handle,
+  if(gskit_status(data, gsk_attribute_get_cert_info(BACKEND->handle,
                                                     GSK_PARTNER_CERT_INFO,
                                                     &cdev, &cdec),
                   "gsk_attribute_get_cert_info()", CURLE_SSL_CONNECT_ERROR) ==
@@ -1216,9 +1227,8 @@ static CURLcode gskit_connect_common(struct connectdata *conn, int sockindex,
 }
 
 
-CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
-                                        int sockindex,
-                                        bool *done)
+static CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
+                                               int sockindex, bool *done)
 {
   CURLcode result;
 
@@ -1229,7 +1239,7 @@ CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
 }
 
 
-CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
+static CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done;
@@ -1245,14 +1255,14 @@ CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex)
 }
 
 
-void Curl_gskit_close(struct connectdata *conn, int sockindex)
+static void Curl_gskit_close(struct connectdata *conn, int sockindex)
 {
   close_one(&conn->ssl[sockindex], conn, sockindex);
   close_one(&conn->proxy_ssl[sockindex], conn, sockindex);
 }
 
 
-int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct Curl_easy *data = conn->data;
@@ -1261,7 +1271,7 @@ int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
   int rc;
   char buf[120];
 
-  if(!connssl->handle)
+  if(!BACKEND->handle)
     return 0;
 
   if(data->set.ftp_ccc != CURLFTPSSL_CCC_ACTIVE)
@@ -1306,21 +1316,22 @@ int Curl_gskit_shutdown(struct connectdata *conn, int sockindex)
 }
 
 
-size_t Curl_gskit_version(char *buffer, size_t size)
+static size_t Curl_gskit_version(char *buffer, size_t size)
 {
   strncpy(buffer, "GSKit", size);
   return strlen(buffer);
 }
 
 
-int Curl_gskit_check_cxn(struct connectdata *cxn)
+static int Curl_gskit_check_cxn(struct connectdata *cxn)
 {
+  struct ssl_connect_data *connssl = &cxn->ssl[FIRSTSOCKET];
   int err;
   int errlen;
 
   /* The only thing that can be tested here is at the socket level. */
 
-  if(!cxn->ssl[FIRSTSOCKET].handle)
+  if(!BACKEND->handle)
     return 0; /* connection has been closed */
 
   err = 0;
@@ -1334,4 +1345,46 @@ int Curl_gskit_check_cxn(struct connectdata *cxn)
   return -1;  /* connection status unknown */
 }
 
+static void *Curl_gskit_get_internals(struct ssl_connect_data *connssl,
+                                      CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->handle;
+}
+
+const struct Curl_ssl Curl_ssl_gskit = {
+  { CURLSSLBACKEND_GSKIT, "gskit" }, /* info */
+
+  0, /* have_ca_path */
+  1, /* have_certinfo */
+  0, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  /* TODO: convert to 1 and fix test #1014 (if need) */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_gskit_init,                /* init */
+  Curl_gskit_cleanup,             /* cleanup */
+  Curl_gskit_version,             /* version */
+  Curl_gskit_check_cxn,           /* check_cxn */
+  Curl_gskit_shutdown,            /* shutdown */
+  Curl_none_data_pending,         /* data_pending */
+  Curl_none_random,               /* random */
+  Curl_none_cert_status_request,  /* cert_status_request */
+  Curl_gskit_connect,             /* connect */
+  Curl_gskit_connect_nonblocking, /* connect_nonblocking */
+  Curl_gskit_get_internals,       /* get_internals */
+  Curl_gskit_close,               /* close */
+  Curl_none_close_all,            /* close_all */
+  /* No session handling for GSKit */
+  Curl_none_session_free,         /* session_free */
+  Curl_none_set_engine,           /* set_engine */
+  Curl_none_set_engine_default,   /* set_engine_default */
+  Curl_none_engines_list,         /* engines_list */
+  Curl_none_false_start,          /* false_start */
+  Curl_none_md5sum,               /* md5sum */
+  NULL                            /* sha256sum */
+};
+
 #endif /* USE_GSKIT */
diff --git a/lib/vtls/gskit.h b/lib/vtls/gskit.h
index 2297592..466ee4d 100644
--- a/lib/vtls/gskit.h
+++ b/lib/vtls/gskit.h
@@ -30,44 +30,8 @@
 #include "urldata.h"
 
 #ifdef USE_GSKIT
-int Curl_gskit_init(void);
-void Curl_gskit_cleanup(void);
-CURLcode Curl_gskit_connect(struct connectdata *conn, int sockindex);
-CURLcode Curl_gskit_connect_nonblocking(struct connectdata *conn,
-                                        int sockindex, bool *done);
-void Curl_gskit_close(struct connectdata *conn, int sockindex);
-int Curl_gskit_shutdown(struct connectdata *conn, int sockindex);
 
-size_t Curl_gskit_version(char *buffer, size_t size);
-int Curl_gskit_check_cxn(struct connectdata *cxn);
-
-/* Support HTTPS-proxy */
-/* TODO: add '#define HTTPS_PROXY_SUPPORT 1' and fix test #1014 (if need) */
-
-/* Set the API backend definition to GSKit */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_GSKIT
-
-/* this backend supports CURLOPT_CERTINFO */
-#define have_curlssl_certinfo 1
-
-/* API setup for GSKit */
-#define curlssl_init Curl_gskit_init
-#define curlssl_cleanup Curl_gskit_cleanup
-#define curlssl_connect Curl_gskit_connect
-#define curlssl_connect_nonblocking Curl_gskit_connect_nonblocking
-
-/*  No session handling for GSKit */
-#define curlssl_session_free(x) Curl_nop_stmt
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_gskit_close
-#define curlssl_shutdown(x,y) Curl_gskit_shutdown(x,y)
-#define curlssl_set_engine(x,y) CURLE_NOT_BUILT_IN
-#define curlssl_set_engine_default(x) CURLE_NOT_BUILT_IN
-#define curlssl_engines_list(x) NULL
-#define curlssl_version Curl_gskit_version
-#define curlssl_check_cxn(x) Curl_gskit_check_cxn(x)
-#define curlssl_data_pending(x,y) 0
-#define curlssl_random(x,y,z) (x=x, y=y, z=z, CURLE_NOT_BUILT_IN)
+extern const struct Curl_ssl Curl_ssl_gskit;
 
 #endif /* USE_GSKIT */
 
diff --git a/lib/vtls/gtls.c b/lib/vtls/gtls.c
index 844be2d..a844915 100644
--- a/lib/vtls/gtls.c
+++ b/lib/vtls/gtls.c
@@ -60,15 +60,13 @@
 /* The last #include file should be: */
 #include "memdebug.h"
 
-/*
- Some hackish cast macros based on:
- https://developer.gnome.org/glib/unstable/glib-Type-Conversion-Macros.html
-*/
-#ifndef GNUTLS_POINTER_TO_INT_CAST
-#define GNUTLS_POINTER_TO_INT_CAST(p) ((int) (long) (p))
+#ifndef GNUTLS_POINTER_TO_SOCKET_CAST
+#define GNUTLS_POINTER_TO_SOCKET_CAST(p) \
+  ((curl_socket_t) ((char *)(p) - (char *)NULL))
 #endif
-#ifndef GNUTLS_INT_TO_POINTER_CAST
-#define GNUTLS_INT_TO_POINTER_CAST(i) ((void *) (long) (i))
+#ifndef GNUTLS_SOCKET_TO_POINTER_CAST
+#define GNUTLS_SOCKET_TO_POINTER_CAST(s) \
+  ((void *) ((char *)NULL + (s)))
 #endif
 
 /* Enable GnuTLS debugging by defining GTLSDEBUG */
@@ -109,6 +107,16 @@ static bool gtls_inited = FALSE;
 # include <gnutls/ocsp.h>
 #endif
 
+struct ssl_backend_data {
+  gnutls_session_t session;
+  gnutls_certificate_credentials_t cred;
+#ifdef USE_TLS_SRP
+  gnutls_srp_client_credentials_t srp_client_cred;
+#endif
+};
+
+#define BACKEND connssl->backend
+
 /*
  * Custom push and pull callback functions used by GNU TLS to read and write
  * to the socket.  These functions are simple wrappers to send() and recv()
@@ -153,7 +161,7 @@ static int gtls_mapped_sockerrno(void)
 
 static ssize_t Curl_gtls_push(void *s, const void *buf, size_t len)
 {
-  ssize_t ret = swrite(GNUTLS_POINTER_TO_INT_CAST(s), buf, len);
+  ssize_t ret = swrite(GNUTLS_POINTER_TO_SOCKET_CAST(s), buf, len);
 #if defined(USE_WINSOCK) && !defined(GNUTLS_MAPS_WINSOCK_ERRORS)
   if(ret < 0)
     gnutls_transport_set_global_errno(gtls_mapped_sockerrno());
@@ -163,7 +171,7 @@ static ssize_t Curl_gtls_push(void *s, const void *buf, size_t len)
 
 static ssize_t Curl_gtls_pull(void *s, void *buf, size_t len)
 {
-  ssize_t ret = sread(GNUTLS_POINTER_TO_INT_CAST(s), buf, len);
+  ssize_t ret = sread(GNUTLS_POINTER_TO_SOCKET_CAST(s), buf, len);
 #if defined(USE_WINSOCK) && !defined(GNUTLS_MAPS_WINSOCK_ERRORS)
   if(ret < 0)
     gnutls_transport_set_global_errno(gtls_mapped_sockerrno());
@@ -188,7 +196,7 @@ static ssize_t Curl_gtls_pull_ssl(void *s, void *buf, size_t len)
  * must only be called from within curl_global_init() to keep the thread
  * situation under control!
  */
-int Curl_gtls_init(void)
+static int Curl_gtls_init(void)
 {
   int ret = 1;
   if(!gtls_inited) {
@@ -202,13 +210,12 @@ int Curl_gtls_init(void)
   return ret;
 }
 
-int Curl_gtls_cleanup(void)
+static void Curl_gtls_cleanup(void)
 {
   if(gtls_inited) {
     gnutls_global_deinit();
     gtls_inited = FALSE;
   }
-  return 1;
 }
 
 #ifndef CURL_DISABLE_VERBOSE_STRINGS
@@ -279,7 +286,7 @@ static CURLcode handshake(struct connectdata *conn,
 {
   struct Curl_easy *data = conn->data;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-  gnutls_session_t session = conn->ssl[sockindex].session;
+  gnutls_session_t session = BACKEND->session;
   curl_socket_t sockfd = conn->sock[sockindex];
   time_t timeout_ms;
   int rc;
@@ -299,9 +306,9 @@ static CURLcode handshake(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading
        || connssl->connecting_state == ssl_connect_2_writing) {
 
-      curl_socket_t writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      curl_socket_t readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
@@ -477,6 +484,7 @@ gtls_connect_step1(struct connectdata *conn,
                    int sockindex)
 {
   struct Curl_easy *data = conn->data;
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   unsigned int init_flags;
   gnutls_session_t session;
   int rc;
@@ -512,7 +520,7 @@ gtls_connect_step1(struct connectdata *conn,
   const char * const hostname = SSL_IS_PROXY() ? conn->http_proxy.host.name :
     conn->host.name;
 
-  if(conn->ssl[sockindex].state == ssl_connection_complete)
+  if(connssl->state == ssl_connection_complete)
     /* to make us tolerant against being called more than once for the
        same connection */
     return CURLE_OK;
@@ -528,7 +536,7 @@ gtls_connect_step1(struct connectdata *conn,
     sni = FALSE; /* SSLv3 has no SNI */
 
   /* allocate a cred struct */
-  rc = gnutls_certificate_allocate_credentials(&conn->ssl[sockindex].cred);
+  rc = gnutls_certificate_allocate_credentials(&BACKEND->cred);
   if(rc != GNUTLS_E_SUCCESS) {
     failf(data, "gnutls_cert_all_cred() failed: %s", gnutls_strerror(rc));
     return CURLE_SSL_CONNECT_ERROR;
@@ -539,15 +547,14 @@ gtls_connect_step1(struct connectdata *conn,
     infof(data, "Using TLS-SRP username: %s\n", SSL_SET_OPTION(username));
 
     rc = gnutls_srp_allocate_client_credentials(
-           &conn->ssl[sockindex].srp_client_cred);
+           &BACKEND->srp_client_cred);
     if(rc != GNUTLS_E_SUCCESS) {
       failf(data, "gnutls_srp_allocate_client_cred() failed: %s",
             gnutls_strerror(rc));
       return CURLE_OUT_OF_MEMORY;
     }
 
-    rc = gnutls_srp_set_client_credentials(conn->ssl[sockindex].
-                                           srp_client_cred,
+    rc = gnutls_srp_set_client_credentials(BACKEND->srp_client_cred,
                                            SSL_SET_OPTION(username),
                                            SSL_SET_OPTION(password));
     if(rc != GNUTLS_E_SUCCESS) {
@@ -560,10 +567,10 @@ gtls_connect_step1(struct connectdata *conn,
 
   if(SSL_CONN_CONFIG(CAfile)) {
     /* set the trusted CA cert bundle file */
-    gnutls_certificate_set_verify_flags(conn->ssl[sockindex].cred,
+    gnutls_certificate_set_verify_flags(BACKEND->cred,
                                         GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT);
 
-    rc = gnutls_certificate_set_x509_trust_file(conn->ssl[sockindex].cred,
+    rc = gnutls_certificate_set_x509_trust_file(BACKEND->cred,
                                                 SSL_CONN_CONFIG(CAfile),
                                                 GNUTLS_X509_FMT_PEM);
     if(rc < 0) {
@@ -580,7 +587,7 @@ gtls_connect_step1(struct connectdata *conn,
 #ifdef HAS_CAPATH
   if(SSL_CONN_CONFIG(CApath)) {
     /* set the trusted CA cert directory */
-    rc = gnutls_certificate_set_x509_trust_dir(conn->ssl[sockindex].cred,
+    rc = gnutls_certificate_set_x509_trust_dir(BACKEND->cred,
                                                SSL_CONN_CONFIG(CApath),
                                                GNUTLS_X509_FMT_PEM);
     if(rc < 0) {
@@ -599,13 +606,13 @@ gtls_connect_step1(struct connectdata *conn,
   /* use system ca certificate store as fallback */
   if(SSL_CONN_CONFIG(verifypeer) &&
      !(SSL_CONN_CONFIG(CAfile) || SSL_CONN_CONFIG(CApath))) {
-    gnutls_certificate_set_x509_system_trust(conn->ssl[sockindex].cred);
+    gnutls_certificate_set_x509_system_trust(BACKEND->cred);
   }
 #endif
 
   if(SSL_SET_OPTION(CRLfile)) {
     /* set the CRL list file */
-    rc = gnutls_certificate_set_x509_crl_file(conn->ssl[sockindex].cred,
+    rc = gnutls_certificate_set_x509_crl_file(BACKEND->cred,
                                               SSL_SET_OPTION(CRLfile),
                                               GNUTLS_X509_FMT_PEM);
     if(rc < 0) {
@@ -626,14 +633,14 @@ gtls_connect_step1(struct connectdata *conn,
   init_flags |= GNUTLS_NO_TICKETS;
 #endif
 
-  rc = gnutls_init(&conn->ssl[sockindex].session, init_flags);
+  rc = gnutls_init(&BACKEND->session, init_flags);
   if(rc != GNUTLS_E_SUCCESS) {
     failf(data, "gnutls_init() failed: %d", rc);
     return CURLE_SSL_CONNECT_ERROR;
   }
 
   /* convenient assign */
-  session = conn->ssl[sockindex].session;
+  session = BACKEND->session;
 
   if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
 #ifdef ENABLE_IPV6
@@ -763,7 +770,8 @@ gtls_connect_step1(struct connectdata *conn,
     gnutls_datum_t protocols[2];
 
 #ifdef USE_NGHTTP2
-    if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
+    if(data->set.httpversion >= CURL_HTTP_VERSION_2 &&
+       (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)) {
       protocols[cur].data = (unsigned char *)NGHTTP2_PROTO_VERSION_ID;
       protocols[cur].size = NGHTTP2_PROTO_VERSION_ID_LEN;
       cur++;
@@ -789,7 +797,7 @@ gtls_connect_step1(struct connectdata *conn,
         GNUTLS_PKCS_USE_PBES2_AES_128 | GNUTLS_PKCS_USE_PBES2_AES_192 |
         GNUTLS_PKCS_USE_PBES2_AES_256;
       rc = gnutls_certificate_set_x509_key_file2(
-           conn->ssl[sockindex].cred,
+           BACKEND->cred,
            SSL_SET_OPTION(cert),
            SSL_SET_OPTION(key) ?
            SSL_SET_OPTION(key) : SSL_SET_OPTION(cert),
@@ -809,7 +817,7 @@ gtls_connect_step1(struct connectdata *conn,
     }
     else {
       if(gnutls_certificate_set_x509_key_file(
-           conn->ssl[sockindex].cred,
+           BACKEND->cred,
            SSL_SET_OPTION(cert),
            SSL_SET_OPTION(key) ?
            SSL_SET_OPTION(key) : SSL_SET_OPTION(cert),
@@ -825,7 +833,7 @@ gtls_connect_step1(struct connectdata *conn,
   /* put the credentials to the current session */
   if(SSL_SET_OPTION(authtype) == CURL_TLSAUTH_SRP) {
     rc = gnutls_credentials_set(session, GNUTLS_CRD_SRP,
-                                conn->ssl[sockindex].srp_client_cred);
+                                BACKEND->srp_client_cred);
     if(rc != GNUTLS_E_SUCCESS) {
       failf(data, "gnutls_credentials_set() failed: %s", gnutls_strerror(rc));
       return CURLE_SSL_CONNECT_ERROR;
@@ -835,7 +843,7 @@ gtls_connect_step1(struct connectdata *conn,
 #endif
   {
     rc = gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE,
-                                conn->ssl[sockindex].cred);
+                                BACKEND->cred);
     if(rc != GNUTLS_E_SUCCESS) {
       failf(data, "gnutls_credentials_set() failed: %s", gnutls_strerror(rc));
       return CURLE_SSL_CONNECT_ERROR;
@@ -843,13 +851,13 @@ gtls_connect_step1(struct connectdata *conn,
   }
 
   if(conn->proxy_ssl[sockindex].use) {
-    transport_ptr = conn->proxy_ssl[sockindex].session;
+    transport_ptr = conn->proxy_ssl[sockindex].backend->session;
     gnutls_transport_push = Curl_gtls_push_ssl;
     gnutls_transport_pull = Curl_gtls_pull_ssl;
   }
   else {
     /* file descriptor for the socket */
-    transport_ptr = GNUTLS_INT_TO_POINTER_CAST(conn->sock[sockindex]);
+    transport_ptr = GNUTLS_SOCKET_TO_POINTER_CAST(conn->sock[sockindex]);
     gnutls_transport_push = Curl_gtls_push;
     gnutls_transport_pull = Curl_gtls_pull;
   }
@@ -968,7 +976,8 @@ gtls_connect_step3(struct connectdata *conn,
   time_t certclock;
   const char *ptr;
   struct Curl_easy *data = conn->data;
-  gnutls_session_t session = conn->ssl[sockindex].session;
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  gnutls_session_t session = BACKEND->session;
   int rc;
 #ifdef HAS_ALPN
   gnutls_datum_t proto;
@@ -1199,7 +1208,7 @@ gtls_connect_step3(struct connectdata *conn,
           SSL_SET_OPTION(issuercert)?SSL_SET_OPTION(issuercert):"none");
   }
 
-  size=sizeof(certbuf);
+  size = sizeof(certbuf);
   rc = gnutls_x509_crt_get_dn_by_oid(x509_cert, GNUTLS_OID_X520_COMMON_NAME,
                                      0, /* the first and only one */
                                      FALSE,
@@ -1239,7 +1248,7 @@ gtls_connect_step3(struct connectdata *conn,
 #endif
 
     if(addrlen) {
-      for(i=0; ; i++) {
+      for(i = 0; ; i++) {
         certaddrlen = sizeof(certaddr);
         ret = gnutls_x509_crt_get_subject_alt_name(x509_cert, i, certaddr,
                                                    &certaddrlen, NULL);
@@ -1472,7 +1481,7 @@ gtls_connect_common(struct connectdata *conn,
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
   /* Initiate the connection, if not already done */
-  if(ssl_connect_1==connssl->connecting_state) {
+  if(ssl_connect_1 == connssl->connecting_state) {
     rc = gtls_connect_step1(conn, sockindex);
     if(rc)
       return rc;
@@ -1484,29 +1493,24 @@ gtls_connect_common(struct connectdata *conn,
     return rc;
 
   /* Finish connecting once the handshake is done */
-  if(ssl_connect_1==connssl->connecting_state) {
+  if(ssl_connect_1 == connssl->connecting_state) {
     rc = gtls_connect_step3(conn, sockindex);
     if(rc)
       return rc;
   }
 
-  *done = ssl_connect_1==connssl->connecting_state;
+  *done = ssl_connect_1 == connssl->connecting_state;
 
   return CURLE_OK;
 }
 
-CURLcode
-Curl_gtls_connect_nonblocking(struct connectdata *conn,
-                              int sockindex,
-                              bool *done)
+static CURLcode Curl_gtls_connect_nonblocking(struct connectdata *conn,
+                                              int sockindex, bool *done)
 {
   return gtls_connect_common(conn, sockindex, TRUE, done);
 }
 
-CURLcode
-Curl_gtls_connect(struct connectdata *conn,
-                  int sockindex)
-
+static CURLcode Curl_gtls_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -1520,15 +1524,18 @@ Curl_gtls_connect(struct connectdata *conn,
   return CURLE_OK;
 }
 
-bool Curl_gtls_data_pending(const struct connectdata *conn, int connindex)
+static bool Curl_gtls_data_pending(const struct connectdata *conn,
+                                   int connindex)
 {
+  const struct ssl_connect_data *connssl = &conn->ssl[connindex];
   bool res = FALSE;
-  if(conn->ssl[connindex].session &&
-     0 != gnutls_record_check_pending(conn->ssl[connindex].session))
+  if(BACKEND->session &&
+     0 != gnutls_record_check_pending(BACKEND->session))
     res = TRUE;
 
-  if(conn->proxy_ssl[connindex].session &&
-     0 != gnutls_record_check_pending(conn->proxy_ssl[connindex].session))
+  connssl = &conn->proxy_ssl[connindex];
+  if(BACKEND->session &&
+     0 != gnutls_record_check_pending(BACKEND->session))
     res = TRUE;
 
   return res;
@@ -1540,7 +1547,8 @@ static ssize_t gtls_send(struct connectdata *conn,
                          size_t len,
                          CURLcode *curlcode)
 {
-  ssize_t rc = gnutls_record_send(conn->ssl[sockindex].session, mem, len);
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  ssize_t rc = gnutls_record_send(BACKEND->session, mem, len);
 
   if(rc < 0) {
     *curlcode = (rc == GNUTLS_E_AGAIN)
@@ -1553,26 +1561,26 @@ static ssize_t gtls_send(struct connectdata *conn,
   return rc;
 }
 
-static void close_one(struct ssl_connect_data *ssl)
+static void close_one(struct ssl_connect_data *connssl)
 {
-  if(ssl->session) {
-    gnutls_bye(ssl->session, GNUTLS_SHUT_RDWR);
-    gnutls_deinit(ssl->session);
-    ssl->session = NULL;
+  if(BACKEND->session) {
+    gnutls_bye(BACKEND->session, GNUTLS_SHUT_RDWR);
+    gnutls_deinit(BACKEND->session);
+    BACKEND->session = NULL;
   }
-  if(ssl->cred) {
-    gnutls_certificate_free_credentials(ssl->cred);
-    ssl->cred = NULL;
+  if(BACKEND->cred) {
+    gnutls_certificate_free_credentials(BACKEND->cred);
+    BACKEND->cred = NULL;
   }
 #ifdef USE_TLS_SRP
-  if(ssl->srp_client_cred) {
-    gnutls_srp_free_client_credentials(ssl->srp_client_cred);
-    ssl->srp_client_cred = NULL;
+  if(BACKEND->srp_client_cred) {
+    gnutls_srp_free_client_credentials(BACKEND->srp_client_cred);
+    BACKEND->srp_client_cred = NULL;
   }
 #endif
 }
 
-void Curl_gtls_close(struct connectdata *conn, int sockindex)
+static void Curl_gtls_close(struct connectdata *conn, int sockindex)
 {
   close_one(&conn->ssl[sockindex]);
   close_one(&conn->proxy_ssl[sockindex]);
@@ -1582,8 +1590,9 @@ void Curl_gtls_close(struct connectdata *conn, int sockindex)
  * This function is called to shut down the SSL layer but keep the
  * socket open (CCC - Clear Command Channel)
  */
-int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   ssize_t result;
   int retval = 0;
   struct Curl_easy *data = conn->data;
@@ -1596,16 +1605,16 @@ int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
      we do not send one. Let's hope other servers do the same... */
 
   if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
-      gnutls_bye(conn->ssl[sockindex].session, GNUTLS_SHUT_WR);
+      gnutls_bye(BACKEND->session, GNUTLS_SHUT_WR);
 
-  if(conn->ssl[sockindex].session) {
+  if(BACKEND->session) {
     while(!done) {
       int what = SOCKET_READABLE(conn->sock[sockindex],
                                  SSL_SHUTDOWN_TIMEOUT);
       if(what > 0) {
         /* Something to read, let's do it and hope that it is the close
            notify alert from the server */
-        result = gnutls_record_recv(conn->ssl[sockindex].session,
+        result = gnutls_record_recv(BACKEND->session,
                                     buf, sizeof(buf));
         switch(result) {
         case 0:
@@ -1636,18 +1645,18 @@ int Curl_gtls_shutdown(struct connectdata *conn, int sockindex)
         done = 1;
       }
     }
-    gnutls_deinit(conn->ssl[sockindex].session);
+    gnutls_deinit(BACKEND->session);
   }
-  gnutls_certificate_free_credentials(conn->ssl[sockindex].cred);
+  gnutls_certificate_free_credentials(BACKEND->cred);
 
 #ifdef USE_TLS_SRP
   if(SSL_SET_OPTION(authtype) == CURL_TLSAUTH_SRP
      && SSL_SET_OPTION(username) != NULL)
-    gnutls_srp_free_client_credentials(conn->ssl[sockindex].srp_client_cred);
+    gnutls_srp_free_client_credentials(BACKEND->srp_client_cred);
 #endif
 
-  conn->ssl[sockindex].cred = NULL;
-  conn->ssl[sockindex].session = NULL;
+  BACKEND->cred = NULL;
+  BACKEND->session = NULL;
 
   return retval;
 }
@@ -1658,9 +1667,10 @@ static ssize_t gtls_recv(struct connectdata *conn, /* connection data */
                          size_t buffersize,        /* max amount to read */
                          CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[num];
   ssize_t ret;
 
-  ret = gnutls_record_recv(conn->ssl[num].session, buf, buffersize);
+  ret = gnutls_record_recv(BACKEND->session, buf, buffersize);
   if((ret == GNUTLS_E_AGAIN) || (ret == GNUTLS_E_INTERRUPTED)) {
     *curlcode = CURLE_AGAIN;
     return -1;
@@ -1680,6 +1690,7 @@ static ssize_t gtls_recv(struct connectdata *conn, /* connection data */
 
   if(ret < 0) {
     failf(conn->data, "GnuTLS recv error (%d): %s",
+
           (int)ret, gnutls_strerror((int)ret));
     *curlcode = CURLE_RECV_ERROR;
     return -1;
@@ -1688,12 +1699,12 @@ static ssize_t gtls_recv(struct connectdata *conn, /* connection data */
   return ret;
 }
 
-void Curl_gtls_session_free(void *ptr)
+static void Curl_gtls_session_free(void *ptr)
 {
   free(ptr);
 }
 
-size_t Curl_gtls_version(char *buffer, size_t size)
+static size_t Curl_gtls_version(char *buffer, size_t size)
 {
   return snprintf(buffer, size, "GnuTLS/%s", gnutls_check_version(NULL));
 }
@@ -1723,9 +1734,8 @@ static int Curl_gtls_seed(struct Curl_easy *data)
 #endif
 
 /* data might be NULL! */
-CURLcode Curl_gtls_random(struct Curl_easy *data,
-                          unsigned char *entropy,
-                          size_t length)
+static CURLcode Curl_gtls_random(struct Curl_easy *data,
+                                 unsigned char *entropy, size_t length)
 {
 #if defined(USE_GNUTLS_NETTLE)
   int rc;
@@ -1740,10 +1750,10 @@ CURLcode Curl_gtls_random(struct Curl_easy *data,
   return CURLE_OK;
 }
 
-void Curl_gtls_md5sum(unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *md5sum, /* output */
-                      size_t md5len)
+static CURLcode Curl_gtls_md5sum(unsigned char *tmp, /* input */
+                                 size_t tmplen,
+                                 unsigned char *md5sum, /* output */
+                                 size_t md5len)
 {
 #if defined(USE_GNUTLS_NETTLE)
   struct md5_ctx MD5pw;
@@ -1757,12 +1767,13 @@ void Curl_gtls_md5sum(unsigned char *tmp, /* input */
   memcpy(md5sum, gcry_md_read(MD5pw, 0), md5len);
   gcry_md_close(MD5pw);
 #endif
+  return CURLE_OK;
 }
 
-void Curl_gtls_sha256sum(const unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *sha256sum, /* output */
-                      size_t sha256len)
+static void Curl_gtls_sha256sum(const unsigned char *tmp, /* input */
+                                size_t tmplen,
+                                unsigned char *sha256sum, /* output */
+                                size_t sha256len)
 {
 #if defined(USE_GNUTLS_NETTLE)
   struct sha256_ctx SHA256pw;
@@ -1778,7 +1789,7 @@ void Curl_gtls_sha256sum(const unsigned char *tmp, /* input */
 #endif
 }
 
-bool Curl_gtls_cert_status_request(void)
+static bool Curl_gtls_cert_status_request(void)
 {
 #ifdef HAS_OCSP
   return TRUE;
@@ -1787,4 +1798,44 @@ bool Curl_gtls_cert_status_request(void)
 #endif
 }
 
+static void *Curl_gtls_get_internals(struct ssl_connect_data *connssl,
+                                     CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->session;
+}
+
+const struct Curl_ssl Curl_ssl_gnutls = {
+  { CURLSSLBACKEND_GNUTLS, "gnutls" }, /* info */
+
+  1, /* have_ca_path */
+  1, /* have_certinfo */
+  1, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  1, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_gtls_init,                /* init */
+  Curl_gtls_cleanup,             /* cleanup */
+  Curl_gtls_version,             /* version */
+  Curl_none_check_cxn,           /* check_cxn */
+  Curl_gtls_shutdown,            /* shutdown */
+  Curl_gtls_data_pending,        /* data_pending */
+  Curl_gtls_random,              /* random */
+  Curl_gtls_cert_status_request, /* cert_status_request */
+  Curl_gtls_connect,             /* connect */
+  Curl_gtls_connect_nonblocking, /* connect_nonblocking */
+  Curl_gtls_get_internals,       /* get_internals */
+  Curl_gtls_close,               /* close */
+  Curl_none_close_all,           /* close_all */
+  Curl_gtls_session_free,        /* session_free */
+  Curl_none_set_engine,          /* set_engine */
+  Curl_none_set_engine_default,  /* set_engine_default */
+  Curl_none_engines_list,        /* engines_list */
+  Curl_none_false_start,         /* false_start */
+  Curl_gtls_md5sum,              /* md5sum */
+  Curl_gtls_sha256sum            /* sha256sum */
+};
+
 #endif /* USE_GNUTLS */
diff --git a/lib/vtls/gtls.h b/lib/vtls/gtls.h
index 462c048..780fc10 100644
--- a/lib/vtls/gtls.h
+++ b/lib/vtls/gtls.h
@@ -28,69 +28,7 @@
 
 #include "urldata.h"
 
-int Curl_gtls_init(void);
-int Curl_gtls_cleanup(void);
-CURLcode Curl_gtls_connect(struct connectdata *conn, int sockindex);
-CURLcode Curl_gtls_connect_nonblocking(struct connectdata *conn,
-                                       int sockindex,
-                                       bool *done);
-bool Curl_gtls_data_pending(const struct connectdata *conn,
-                            int connindex);
-
- /* close a SSL connection */
-void Curl_gtls_close(struct connectdata *conn, int sockindex);
-
-void Curl_gtls_session_free(void *ptr);
-size_t Curl_gtls_version(char *buffer, size_t size);
-int Curl_gtls_shutdown(struct connectdata *conn, int sockindex);
-CURLcode Curl_gtls_random(struct Curl_easy *data,
-                          unsigned char *entropy,
-                          size_t length);
-void Curl_gtls_md5sum(unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *md5sum, /* output */
-                      size_t md5len);
-void Curl_gtls_sha256sum(const unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *sha256sum, /* output */
-                      size_t sha256len);
-
-bool Curl_gtls_cert_status_request(void);
-
-/* Support HTTPS-proxy */
-#define HTTPS_PROXY_SUPPORT 1
-
-/* Set the API backend definition to GnuTLS */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_GNUTLS
-
-/* this backend supports the CAPATH option */
-#define have_curlssl_ca_path 1
-
-/* this backend supports CURLOPT_CERTINFO */
-#define have_curlssl_certinfo 1
-
-/* this backend supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-
-/* API setup for GnuTLS */
-#define curlssl_init Curl_gtls_init
-#define curlssl_cleanup Curl_gtls_cleanup
-#define curlssl_connect Curl_gtls_connect
-#define curlssl_connect_nonblocking Curl_gtls_connect_nonblocking
-#define curlssl_session_free(x)  Curl_gtls_session_free(x)
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_gtls_close
-#define curlssl_shutdown(x,y) Curl_gtls_shutdown(x,y)
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_gtls_version
-#define curlssl_check_cxn(x) ((void)x, -1)
-#define curlssl_data_pending(x,y) Curl_gtls_data_pending(x,y)
-#define curlssl_random(x,y,z) Curl_gtls_random(x,y,z)
-#define curlssl_md5sum(a,b,c,d) Curl_gtls_md5sum(a,b,c,d)
-#define curlssl_sha256sum(a,b,c,d) Curl_gtls_sha256sum(a,b,c,d)
-#define curlssl_cert_status_request() Curl_gtls_cert_status_request()
+extern const struct Curl_ssl Curl_ssl_gnutls;
 
 #endif /* USE_GNUTLS */
 #endif /* HEADER_CURL_GTLS_H */
diff --git a/lib/vtls/mbedtls.c b/lib/vtls/mbedtls.c
index 037babe..ce1f8eb 100644
--- a/lib/vtls/mbedtls.c
+++ b/lib/vtls/mbedtls.c
@@ -61,6 +61,21 @@
 #include "curl_memory.h"
 #include "memdebug.h"
 
+struct ssl_backend_data {
+  mbedtls_ctr_drbg_context ctr_drbg;
+  mbedtls_entropy_context entropy;
+  mbedtls_ssl_context ssl;
+  int server_fd;
+  mbedtls_x509_crt cacert;
+  mbedtls_x509_crt clicert;
+  mbedtls_x509_crl crl;
+  mbedtls_pk_context pk;
+  mbedtls_ssl_config config;
+  const char *protocols[3];
+};
+
+#define BACKEND connssl->backend
+
 /* apply threading? */
 #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
 #define THREADING_SUPPORT
@@ -214,9 +229,9 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
     return result;
   }
 
-  mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+  mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
                                mbedtls_ver_min);
-  mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+  mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
                                mbedtls_ver_max);
 
   return result;
@@ -238,7 +253,7 @@ mbed_connect_step1(struct connectdata *conn,
   const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
   int ret = -1;
   char errorbuf[128];
-  errorbuf[0]=0;
+  errorbuf[0] = 0;
 
   /* mbedTLS only supports SSLv3 and TLSv1 */
   if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
@@ -248,9 +263,9 @@ mbed_connect_step1(struct connectdata *conn,
 
 #ifdef THREADING_SUPPORT
   entropy_init_mutex(&ts_entropy);
-  mbedtls_ctr_drbg_init(&connssl->ctr_drbg);
+  mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
 
-  ret = mbedtls_ctr_drbg_seed(&connssl->ctr_drbg, entropy_func_mutex,
+  ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, entropy_func_mutex,
                               &ts_entropy, NULL, 0);
   if(ret) {
 #ifdef MBEDTLS_ERROR_C
@@ -260,11 +275,11 @@ mbed_connect_step1(struct connectdata *conn,
           -ret, errorbuf);
   }
 #else
-  mbedtls_entropy_init(&connssl->entropy);
-  mbedtls_ctr_drbg_init(&connssl->ctr_drbg);
+  mbedtls_entropy_init(&BACKEND->entropy);
+  mbedtls_ctr_drbg_init(&BACKEND->ctr_drbg);
 
-  ret = mbedtls_ctr_drbg_seed(&connssl->ctr_drbg, mbedtls_entropy_func,
-                              &connssl->entropy, NULL, 0);
+  ret = mbedtls_ctr_drbg_seed(&BACKEND->ctr_drbg, mbedtls_entropy_func,
+                              &BACKEND->entropy, NULL, 0);
   if(ret) {
 #ifdef MBEDTLS_ERROR_C
     mbedtls_strerror(ret, errorbuf, sizeof(errorbuf));
@@ -275,10 +290,10 @@ mbed_connect_step1(struct connectdata *conn,
 #endif /* THREADING_SUPPORT */
 
   /* Load the trusted CA */
-  mbedtls_x509_crt_init(&connssl->cacert);
+  mbedtls_x509_crt_init(&BACKEND->cacert);
 
   if(ssl_cafile) {
-    ret = mbedtls_x509_crt_parse_file(&connssl->cacert, ssl_cafile);
+    ret = mbedtls_x509_crt_parse_file(&BACKEND->cacert, ssl_cafile);
 
     if(ret<0) {
 #ifdef MBEDTLS_ERROR_C
@@ -293,7 +308,7 @@ mbed_connect_step1(struct connectdata *conn,
   }
 
   if(ssl_capath) {
-    ret = mbedtls_x509_crt_parse_path(&connssl->cacert, ssl_capath);
+    ret = mbedtls_x509_crt_parse_path(&BACKEND->cacert, ssl_capath);
 
     if(ret<0) {
 #ifdef MBEDTLS_ERROR_C
@@ -308,10 +323,10 @@ mbed_connect_step1(struct connectdata *conn,
   }
 
   /* Load the client certificate */
-  mbedtls_x509_crt_init(&connssl->clicert);
+  mbedtls_x509_crt_init(&BACKEND->clicert);
 
   if(ssl_cert) {
-    ret = mbedtls_x509_crt_parse_file(&connssl->clicert, ssl_cert);
+    ret = mbedtls_x509_crt_parse_file(&BACKEND->clicert, ssl_cert);
 
     if(ret) {
 #ifdef MBEDTLS_ERROR_C
@@ -325,12 +340,12 @@ mbed_connect_step1(struct connectdata *conn,
   }
 
   /* Load the client private key */
-  mbedtls_pk_init(&connssl->pk);
+  mbedtls_pk_init(&BACKEND->pk);
 
   if(SSL_SET_OPTION(key)) {
-    ret = mbedtls_pk_parse_keyfile(&connssl->pk, SSL_SET_OPTION(key),
+    ret = mbedtls_pk_parse_keyfile(&BACKEND->pk, SSL_SET_OPTION(key),
                                    SSL_SET_OPTION(key_passwd));
-    if(ret == 0 && !mbedtls_pk_can_do(&connssl->pk, MBEDTLS_PK_RSA))
+    if(ret == 0 && !mbedtls_pk_can_do(&BACKEND->pk, MBEDTLS_PK_RSA))
       ret = MBEDTLS_ERR_PK_TYPE_MISMATCH;
 
     if(ret) {
@@ -345,10 +360,10 @@ mbed_connect_step1(struct connectdata *conn,
   }
 
   /* Load the CRL */
-  mbedtls_x509_crl_init(&connssl->crl);
+  mbedtls_x509_crl_init(&BACKEND->crl);
 
   if(ssl_crlfile) {
-    ret = mbedtls_x509_crl_parse_file(&connssl->crl, ssl_crlfile);
+    ret = mbedtls_x509_crl_parse_file(&BACKEND->crl, ssl_crlfile);
 
     if(ret) {
 #ifdef MBEDTLS_ERROR_C
@@ -363,14 +378,14 @@ mbed_connect_step1(struct connectdata *conn,
 
   infof(data, "mbedTLS: Connecting to %s:%d\n", hostname, port);
 
-  mbedtls_ssl_config_init(&connssl->config);
+  mbedtls_ssl_config_init(&BACKEND->config);
 
-  mbedtls_ssl_init(&connssl->ssl);
-  if(mbedtls_ssl_setup(&connssl->ssl, &connssl->config)) {
+  mbedtls_ssl_init(&BACKEND->ssl);
+  if(mbedtls_ssl_setup(&BACKEND->ssl, &BACKEND->config)) {
     failf(data, "mbedTLS: ssl_init failed");
     return CURLE_SSL_CONNECT_ERROR;
   }
-  ret = mbedtls_ssl_config_defaults(&connssl->config,
+  ret = mbedtls_ssl_config_defaults(&BACKEND->config,
                                     MBEDTLS_SSL_IS_CLIENT,
                                     MBEDTLS_SSL_TRANSPORT_STREAM,
                                     MBEDTLS_SSL_PRESET_DEFAULT);
@@ -380,20 +395,20 @@ mbed_connect_step1(struct connectdata *conn,
   }
 
   /* new profile with RSA min key len = 1024 ... */
-  mbedtls_ssl_conf_cert_profile(&connssl->config,
+  mbedtls_ssl_conf_cert_profile(&BACKEND->config,
                                 &mbedtls_x509_crt_profile_fr);
 
   switch(SSL_CONN_CONFIG(version)) {
   case CURL_SSLVERSION_DEFAULT:
   case CURL_SSLVERSION_TLSv1:
-    mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+    mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
                                  MBEDTLS_SSL_MINOR_VERSION_1);
     infof(data, "mbedTLS: Set min SSL version to TLS 1.0\n");
     break;
   case CURL_SSLVERSION_SSLv3:
-    mbedtls_ssl_conf_min_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+    mbedtls_ssl_conf_min_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
                                  MBEDTLS_SSL_MINOR_VERSION_0);
-    mbedtls_ssl_conf_max_version(&connssl->config, MBEDTLS_SSL_MAJOR_VERSION_3,
+    mbedtls_ssl_conf_max_version(&BACKEND->config, MBEDTLS_SSL_MAJOR_VERSION_3,
                                  MBEDTLS_SSL_MINOR_VERSION_0);
     infof(data, "mbedTLS: Set SSL version to SSLv3\n");
     break;
@@ -412,25 +427,25 @@ mbed_connect_step1(struct connectdata *conn,
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  mbedtls_ssl_conf_authmode(&connssl->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
+  mbedtls_ssl_conf_authmode(&BACKEND->config, MBEDTLS_SSL_VERIFY_OPTIONAL);
 
-  mbedtls_ssl_conf_rng(&connssl->config, mbedtls_ctr_drbg_random,
-                       &connssl->ctr_drbg);
-  mbedtls_ssl_set_bio(&connssl->ssl, &conn->sock[sockindex],
+  mbedtls_ssl_conf_rng(&BACKEND->config, mbedtls_ctr_drbg_random,
+                       &BACKEND->ctr_drbg);
+  mbedtls_ssl_set_bio(&BACKEND->ssl, &conn->sock[sockindex],
                       mbedtls_net_send,
                       mbedtls_net_recv,
                       NULL /*  rev_timeout() */);
 
-  mbedtls_ssl_conf_ciphersuites(&connssl->config,
+  mbedtls_ssl_conf_ciphersuites(&BACKEND->config,
                                 mbedtls_ssl_list_ciphersuites());
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-  mbedtls_ssl_conf_renegotiation(&connssl->config,
+  mbedtls_ssl_conf_renegotiation(&BACKEND->config,
                                  MBEDTLS_SSL_RENEGOTIATION_ENABLED);
 #endif
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-  mbedtls_ssl_conf_session_tickets(&connssl->config,
+  mbedtls_ssl_conf_session_tickets(&BACKEND->config,
                                    MBEDTLS_SSL_SESSION_TICKETS_DISABLED);
 #endif
 
@@ -440,7 +455,7 @@ mbed_connect_step1(struct connectdata *conn,
 
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
-      ret = mbedtls_ssl_set_session(&connssl->ssl, old_session);
+      ret = mbedtls_ssl_set_session(&BACKEND->ssl, old_session);
       if(ret) {
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "mbedtls_ssl_set_session returned -0x%x", -ret);
@@ -451,15 +466,15 @@ mbed_connect_step1(struct connectdata *conn,
     Curl_ssl_sessionid_unlock(conn);
   }
 
-  mbedtls_ssl_conf_ca_chain(&connssl->config,
-                            &connssl->cacert,
-                            &connssl->crl);
+  mbedtls_ssl_conf_ca_chain(&BACKEND->config,
+                            &BACKEND->cacert,
+                            &BACKEND->crl);
 
   if(SSL_SET_OPTION(key)) {
-    mbedtls_ssl_conf_own_cert(&connssl->config,
-                              &connssl->clicert, &connssl->pk);
+    mbedtls_ssl_conf_own_cert(&BACKEND->config,
+                              &BACKEND->clicert, &BACKEND->pk);
   }
-  if(mbedtls_ssl_set_hostname(&connssl->ssl, hostname)) {
+  if(mbedtls_ssl_set_hostname(&BACKEND->ssl, hostname)) {
     /* mbedtls_ssl_set_hostname() sets the name to use in CN/SAN checks *and*
        the name to set in the SNI extension. So even if curl connects to a
        host specified as an IP address, this function must be used. */
@@ -469,7 +484,7 @@ mbed_connect_step1(struct connectdata *conn,
 
 #ifdef HAS_ALPN
   if(conn->bits.tls_enable_alpn) {
-    const char **p = &connssl->protocols[0];
+    const char **p = &BACKEND->protocols[0];
 #ifdef USE_NGHTTP2
     if(data->set.httpversion >= CURL_HTTP_VERSION_2)
       *p++ = NGHTTP2_PROTO_VERSION_ID;
@@ -478,19 +493,19 @@ mbed_connect_step1(struct connectdata *conn,
     *p = NULL;
     /* this function doesn't clone the protocols array, which is why we need
        to keep it around */
-    if(mbedtls_ssl_conf_alpn_protocols(&connssl->config,
-                                       &connssl->protocols[0])) {
+    if(mbedtls_ssl_conf_alpn_protocols(&BACKEND->config,
+                                       &BACKEND->protocols[0])) {
       failf(data, "Failed setting ALPN protocols");
       return CURLE_SSL_CONNECT_ERROR;
     }
-    for(p = &connssl->protocols[0]; *p; ++p)
+    for(p = &BACKEND->protocols[0]; *p; ++p)
       infof(data, "ALPN, offering %s\n", *p);
   }
 #endif
 
 #ifdef MBEDTLS_DEBUG
   /* In order to make that work in mbedtls MBEDTLS_DEBUG_C must be defined. */
-  mbedtls_ssl_conf_dbg(&connssl->config, mbed_debug, data);
+  mbedtls_ssl_conf_dbg(&BACKEND->config, mbed_debug, data);
   /* - 0 No debug
    * - 1 Error
    * - 2 State change
@@ -502,7 +517,7 @@ mbed_connect_step1(struct connectdata *conn,
 
   /* give application a chance to interfere with mbedTLS set up. */
   if(data->set.ssl.fsslctx) {
-    ret = (*data->set.ssl.fsslctx)(data, &connssl->config,
+    ret = (*data->set.ssl.fsslctx)(data, &BACKEND->config,
                                    data->set.ssl.fsslctxp);
     if(ret) {
       failf(data, "error signaled by ssl ctx callback");
@@ -537,7 +552,7 @@ mbed_connect_step2(struct connectdata *conn,
   conn->recv[sockindex] = mbed_recv;
   conn->send[sockindex] = mbed_send;
 
-  ret = mbedtls_ssl_handshake(&connssl->ssl);
+  ret = mbedtls_ssl_handshake(&BACKEND->ssl);
 
   if(ret == MBEDTLS_ERR_SSL_WANT_READ) {
     connssl->connecting_state = ssl_connect_2_reading;
@@ -557,10 +572,10 @@ mbed_connect_step2(struct connectdata *conn,
   }
 
   infof(data, "mbedTLS: Handshake complete, cipher is %s\n",
-        mbedtls_ssl_get_ciphersuite(&conn->ssl[sockindex].ssl)
+        mbedtls_ssl_get_ciphersuite(&BACKEND->ssl)
     );
 
-  ret = mbedtls_ssl_get_verify_result(&conn->ssl[sockindex].ssl);
+  ret = mbedtls_ssl_get_verify_result(&BACKEND->ssl);
 
   if(ret && SSL_CONN_CONFIG(verifypeer)) {
     if(ret & MBEDTLS_X509_BADCERT_EXPIRED)
@@ -580,7 +595,7 @@ mbed_connect_step2(struct connectdata *conn,
     return CURLE_PEER_FAILED_VERIFICATION;
   }
 
-  peercert = mbedtls_ssl_get_peer_cert(&connssl->ssl);
+  peercert = mbedtls_ssl_get_peer_cert(&BACKEND->ssl);
 
   if(peercert && data->set.verbose) {
     const size_t bufsize = 16384;
@@ -650,7 +665,7 @@ mbed_connect_step2(struct connectdata *conn,
 
 #ifdef HAS_ALPN
   if(conn->bits.tls_enable_alpn) {
-    next_protocol = mbedtls_ssl_get_alpn_protocol(&connssl->ssl);
+    next_protocol = mbedtls_ssl_get_alpn_protocol(&BACKEND->ssl);
 
     if(next_protocol) {
       infof(data, "ALPN, server accepted to use %s\n", next_protocol);
@@ -700,7 +715,7 @@ mbed_connect_step3(struct connectdata *conn,
 
     mbedtls_ssl_session_init(our_ssl_sessionid);
 
-    ret = mbedtls_ssl_get_session(&connssl->ssl, our_ssl_sessionid);
+    ret = mbedtls_ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
     if(ret) {
       free(our_ssl_sessionid);
       failf(data, "mbedtls_ssl_get_session returned -0x%x", -ret);
@@ -730,9 +745,10 @@ static ssize_t mbed_send(struct connectdata *conn, int sockindex,
                          const void *mem, size_t len,
                          CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   int ret = -1;
 
-  ret = mbedtls_ssl_write(&conn->ssl[sockindex].ssl,
+  ret = mbedtls_ssl_write(&BACKEND->ssl,
                           (unsigned char *)mem, len);
 
   if(ret < 0) {
@@ -744,22 +760,23 @@ static ssize_t mbed_send(struct connectdata *conn, int sockindex,
   return ret;
 }
 
-void Curl_mbedtls_close_all(struct Curl_easy *data)
+static void Curl_mbedtls_close_all(struct Curl_easy *data)
 {
   (void)data;
 }
 
-void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
+static void Curl_mbedtls_close(struct connectdata *conn, int sockindex)
 {
-  mbedtls_pk_free(&conn->ssl[sockindex].pk);
-  mbedtls_x509_crt_free(&conn->ssl[sockindex].clicert);
-  mbedtls_x509_crt_free(&conn->ssl[sockindex].cacert);
-  mbedtls_x509_crl_free(&conn->ssl[sockindex].crl);
-  mbedtls_ssl_config_free(&conn->ssl[sockindex].config);
-  mbedtls_ssl_free(&conn->ssl[sockindex].ssl);
-  mbedtls_ctr_drbg_free(&conn->ssl[sockindex].ctr_drbg);
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  mbedtls_pk_free(&BACKEND->pk);
+  mbedtls_x509_crt_free(&BACKEND->clicert);
+  mbedtls_x509_crt_free(&BACKEND->cacert);
+  mbedtls_x509_crl_free(&BACKEND->crl);
+  mbedtls_ssl_config_free(&BACKEND->config);
+  mbedtls_ssl_free(&BACKEND->ssl);
+  mbedtls_ctr_drbg_free(&BACKEND->ctr_drbg);
 #ifndef THREADING_SUPPORT
-  mbedtls_entropy_free(&conn->ssl[sockindex].entropy);
+  mbedtls_entropy_free(&BACKEND->entropy);
 #endif /* THREADING_SUPPORT */
 }
 
@@ -767,11 +784,12 @@ static ssize_t mbed_recv(struct connectdata *conn, int num,
                          char *buf, size_t buffersize,
                          CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[num];
   int ret = -1;
   ssize_t len = -1;
 
   memset(buf, 0, buffersize);
-  ret = mbedtls_ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf,
+  ret = mbedtls_ssl_read(&BACKEND->ssl, (unsigned char *)buf,
                          buffersize);
 
   if(ret <= 0) {
@@ -788,21 +806,21 @@ static ssize_t mbed_recv(struct connectdata *conn, int num,
   return len;
 }
 
-void Curl_mbedtls_session_free(void *ptr)
+static void Curl_mbedtls_session_free(void *ptr)
 {
   mbedtls_ssl_session_free(ptr);
   free(ptr);
 }
 
-size_t Curl_mbedtls_version(char *buffer, size_t size)
+static size_t Curl_mbedtls_version(char *buffer, size_t size)
 {
   unsigned int version = mbedtls_version_get_number();
   return snprintf(buffer, size, "mbedTLS/%d.%d.%d", version>>24,
                   (version>>16)&0xff, (version>>8)&0xff);
 }
 
-CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy,
-                             size_t length)
+static CURLcode Curl_mbedtls_random(struct Curl_easy *data,
+                                    unsigned char *entropy, size_t length)
 {
 #if defined(MBEDTLS_CTR_DRBG_C)
   int ret = -1;
@@ -811,7 +829,7 @@ CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy,
   mbedtls_ctr_drbg_context ctr_drbg;
   mbedtls_entropy_init(&ctr_entropy);
   mbedtls_ctr_drbg_init(&ctr_drbg);
-  errorbuf[0]=0;
+  errorbuf[0] = 0;
 
   ret = mbedtls_ctr_drbg_seed(&ctr_drbg, mbedtls_entropy_func,
                               &ctr_entropy, NULL, 0);
@@ -869,7 +887,7 @@ mbed_connect_common(struct connectdata *conn,
     return CURLE_OK;
   }
 
-  if(ssl_connect_1==connssl->connecting_state) {
+  if(ssl_connect_1 == connssl->connecting_state) {
     /* Find out how much more time we're allowed */
     timeout_ms = Curl_timeleft(data, NULL, TRUE);
 
@@ -900,9 +918,9 @@ mbed_connect_common(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading
        || connssl->connecting_state == ssl_connect_2_writing) {
 
-      curl_socket_t writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      curl_socket_t readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
@@ -942,13 +960,13 @@ mbed_connect_common(struct connectdata *conn,
 
   } /* repeat step2 until all transactions are done. */
 
-  if(ssl_connect_3==connssl->connecting_state) {
+  if(ssl_connect_3 == connssl->connecting_state) {
     retcode = mbed_connect_step3(conn, sockindex);
     if(retcode)
       return retcode;
   }
 
-  if(ssl_connect_done==connssl->connecting_state) {
+  if(ssl_connect_done == connssl->connecting_state) {
     connssl->state = ssl_connection_complete;
     conn->recv[sockindex] = mbed_recv;
     conn->send[sockindex] = mbed_send;
@@ -963,18 +981,14 @@ mbed_connect_common(struct connectdata *conn,
   return CURLE_OK;
 }
 
-CURLcode
-Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
-                                 int sockindex,
-                                 bool *done)
+static CURLcode Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
+                                                 int sockindex, bool *done)
 {
   return mbed_connect_common(conn, sockindex, TRUE, done);
 }
 
 
-CURLcode
-Curl_mbedtls_connect(struct connectdata *conn,
-                     int sockindex)
+static CURLcode Curl_mbedtls_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode retcode;
   bool done = FALSE;
@@ -992,19 +1006,70 @@ Curl_mbedtls_connect(struct connectdata *conn,
  * return 0 error initializing SSL
  * return 1 SSL initialized successfully
  */
-int Curl_mbedtls_init(void)
+static int Curl_mbedtls_init(void)
 {
   return Curl_polarsslthreadlock_thread_setup();
 }
 
-void Curl_mbedtls_cleanup(void)
+static void Curl_mbedtls_cleanup(void)
 {
   (void)Curl_polarsslthreadlock_thread_cleanup();
 }
 
-int Curl_mbedtls_data_pending(const struct connectdata *conn, int sockindex)
+static bool Curl_mbedtls_data_pending(const struct connectdata *conn,
+                                      int sockindex)
 {
-  return mbedtls_ssl_get_bytes_avail(&conn->ssl[sockindex].ssl) != 0;
+  const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  return mbedtls_ssl_get_bytes_avail(&BACKEND->ssl) != 0;
 }
 
+static void Curl_mbedtls_sha256sum(const unsigned char *input,
+                                    size_t inputlen,
+                                    unsigned char *sha256sum,
+                                    size_t sha256len UNUSED_PARAM)
+{
+  (void)sha256len;
+  mbedtls_sha256(input, inputlen, sha256sum, 0);
+}
+
+static void *Curl_mbedtls_get_internals(struct ssl_connect_data *connssl,
+                                        CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return &BACKEND->ssl;
+}
+
+const struct Curl_ssl Curl_ssl_mbedtls = {
+  { CURLSSLBACKEND_MBEDTLS, "mbedtls" }, /* info */
+
+  1, /* have_ca_path */
+  0, /* have_certinfo */
+  1, /* have_pinnedpubkey */
+  1, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_mbedtls_init,                /* init */
+  Curl_mbedtls_cleanup,             /* cleanup */
+  Curl_mbedtls_version,             /* version */
+  Curl_none_check_cxn,              /* check_cxn */
+  Curl_none_shutdown,               /* shutdown */
+  Curl_mbedtls_data_pending,        /* data_pending */
+  Curl_mbedtls_random,              /* random */
+  Curl_none_cert_status_request,    /* cert_status_request */
+  Curl_mbedtls_connect,             /* connect */
+  Curl_mbedtls_connect_nonblocking, /* connect_nonblocking */
+  Curl_mbedtls_get_internals,       /* get_internals */
+  Curl_mbedtls_close,               /* close */
+  Curl_mbedtls_close_all,           /* close_all */
+  Curl_mbedtls_session_free,        /* session_free */
+  Curl_none_set_engine,             /* set_engine */
+  Curl_none_set_engine_default,     /* set_engine_default */
+  Curl_none_engines_list,           /* engines_list */
+  Curl_none_false_start,            /* false_start */
+  Curl_none_md5sum,                 /* md5sum */
+  Curl_mbedtls_sha256sum            /* sha256sum */
+};
+
 #endif /* USE_MBEDTLS */
diff --git a/lib/vtls/mbedtls.h b/lib/vtls/mbedtls.h
index 71d17a4..4a93860 100644
--- a/lib/vtls/mbedtls.h
+++ b/lib/vtls/mbedtls.h
@@ -26,57 +26,7 @@
 
 #ifdef USE_MBEDTLS
 
-#include <mbedtls/sha256.h>
-
-/* Called on first use mbedTLS, setup threading if supported */
-int  Curl_mbedtls_init(void);
-void Curl_mbedtls_cleanup(void);
-int Curl_mbedtls_data_pending(const struct connectdata *conn, int sockindex);
-
-CURLcode Curl_mbedtls_connect(struct connectdata *conn, int sockindex);
-
-CURLcode Curl_mbedtls_connect_nonblocking(struct connectdata *conn,
-                                           int sockindex,
-                                           bool *done);
-
-/* tell mbedTLS to close down all open information regarding connections (and
-   thus session ID caching etc) */
-void Curl_mbedtls_close_all(struct Curl_easy *data);
-
- /* close a SSL connection */
-void Curl_mbedtls_close(struct connectdata *conn, int sockindex);
-
-void Curl_mbedtls_session_free(void *ptr);
-size_t Curl_mbedtls_version(char *buffer, size_t size);
-int Curl_mbedtls_shutdown(struct connectdata *conn, int sockindex);
-
-CURLcode Curl_mbedtls_random(struct Curl_easy *data, unsigned char *entropy,
-                     size_t length);
-
-/* this backends supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-
-/* this backend supports CURLOPT_SSL_CTX_* */
-#define have_curlssl_ssl_ctx 1
-
-/* API setup for mbedTLS */
-#define curlssl_init() Curl_mbedtls_init()
-#define curlssl_cleanup() Curl_mbedtls_cleanup()
-#define curlssl_connect Curl_mbedtls_connect
-#define curlssl_connect_nonblocking Curl_mbedtls_connect_nonblocking
-#define curlssl_session_free(x)  Curl_mbedtls_session_free(x)
-#define curlssl_close_all Curl_mbedtls_close_all
-#define curlssl_close Curl_mbedtls_close
-#define curlssl_shutdown(x,y) 0
-#define curlssl_set_engine(x,y) (x=x, y=y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) (x=x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) (x=x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_mbedtls_version
-#define curlssl_check_cxn(x) (x=x, -1)
-#define curlssl_data_pending(x,y) Curl_mbedtls_data_pending(x, y)
-#define CURL_SSL_BACKEND CURLSSLBACKEND_MBEDTLS
-#define curlssl_sha256sum(a,b,c,d) mbedtls_sha256(a,b,c,0)
-#define curlssl_random(x,y,z) Curl_mbedtls_random(x, y, z)
+extern const struct Curl_ssl Curl_ssl_mbedtls;
 
 #endif /* USE_MBEDTLS */
 #endif /* HEADER_CURL_MBEDTLS_H */
diff --git a/lib/vtls/nss.c b/lib/vtls/nss.c
index cd01389..c0b7e63 100644
--- a/lib/vtls/nss.c
+++ b/lib/vtls/nss.c
@@ -78,6 +78,16 @@
 /* enough to fit the string "PEM Token #[0|1]" */
 #define SLOTSIZE 13
 
+struct ssl_backend_data {
+  PRFileDesc *handle;
+  char *client_nickname;
+  struct Curl_easy *data;
+  struct curl_llist obj_list;
+  PK11GenericObject *obj_clicert;
+};
+
+#define BACKEND connssl->backend
+
 static PRLock *nss_initlock = NULL;
 static PRLock *nss_crllock = NULL;
 static PRLock *nss_findslot_lock = NULL;
@@ -271,7 +281,7 @@ static SECStatus set_ciphers(struct Curl_easy *data, PRFileDesc * model,
 
     found = PR_FALSE;
 
-    for(i=0; i<NUM_OF_CIPHERS; i++) {
+    for(i = 0; i<NUM_OF_CIPHERS; i++) {
       if(strcasecompare(cipher, cipherlist[i].name)) {
         cipher_state[i] = PR_TRUE;
         found = PR_TRUE;
@@ -290,7 +300,7 @@ static SECStatus set_ciphers(struct Curl_easy *data, PRFileDesc * model,
   }
 
   /* Finally actually enable the selected ciphers */
-  for(i=0; i<NUM_OF_CIPHERS; i++) {
+  for(i = 0; i<NUM_OF_CIPHERS; i++) {
     if(!cipher_state[i])
       continue;
 
@@ -311,7 +321,7 @@ static bool any_cipher_enabled(void)
 {
   unsigned int i;
 
-  for(i=0; i<NUM_OF_CIPHERS; i++) {
+  for(i = 0; i<NUM_OF_CIPHERS; i++) {
     PRInt32 policy = 0;
     SSL_CipherPolicyGet(cipherlist[i].num, &policy);
     if(policy)
@@ -396,7 +406,7 @@ static CURLcode insert_wrapped_ptr(struct curl_llist *list, void *ptr)
 /* Call PK11_CreateGenericObject() with the given obj_class and filename.  If
  * the call succeeds, append the object handle to the list of objects so that
  * the object can be destroyed in Curl_nss_close(). */
-static CURLcode nss_create_object(struct ssl_connect_data *ssl,
+static CURLcode nss_create_object(struct ssl_connect_data *connssl,
                                   CK_OBJECT_CLASS obj_class,
                                   const char *filename, bool cacert)
 {
@@ -435,14 +445,14 @@ static CURLcode nss_create_object(struct ssl_connect_data *ssl,
   if(!obj)
     return result;
 
-  if(insert_wrapped_ptr(&ssl->obj_list, obj) != CURLE_OK) {
+  if(insert_wrapped_ptr(&BACKEND->obj_list, obj) != CURLE_OK) {
     PK11_DestroyGenericObject(obj);
     return CURLE_OUT_OF_MEMORY;
   }
 
   if(!cacert && CKO_CERTIFICATE == obj_class)
     /* store reference to a client certificate */
-    ssl->obj_clicert = obj;
+    BACKEND->obj_clicert = obj;
 
   return CURLE_OK;
 }
@@ -992,7 +1002,7 @@ static SECStatus check_issuer_cert(PRFileDesc *sock,
                                    char *issuer_nickname)
 {
   CERTCertificate *cert, *cert_issuer, *issuer;
-  SECStatus res=SECSuccess;
+  SECStatus res = SECSuccess;
   void *proto_win = NULL;
 
   cert = SSL_PeerCertificate(sock);
@@ -1004,7 +1014,7 @@ static SECStatus check_issuer_cert(PRFileDesc *sock,
   if((!cert_issuer) || (!issuer))
     res = SECFailure;
   else if(SECITEM_CompareItem(&cert_issuer->derCert,
-                              &issuer->derCert)!=SECEqual)
+                              &issuer->derCert) != SECEqual)
     res = SECFailure;
 
   CERT_DestroyCertificate(cert);
@@ -1017,7 +1027,7 @@ static CURLcode cmp_peer_pubkey(struct ssl_connect_data *connssl,
                                 const char *pinnedpubkey)
 {
   CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
-  struct Curl_easy *data = connssl->data;
+  struct Curl_easy *data = BACKEND->data;
   CERTCertificate *cert;
 
   if(!pinnedpubkey)
@@ -1025,7 +1035,7 @@ static CURLcode cmp_peer_pubkey(struct ssl_connect_data *connssl,
     return CURLE_OK;
 
   /* get peer certificate */
-  cert = SSL_PeerCertificate(connssl->handle);
+  cert = SSL_PeerCertificate(BACKEND->handle);
   if(cert) {
     /* extract public key from peer certificate */
     SECKEYPublicKey *pubkey = CERT_ExtractPublicKey(cert);
@@ -1069,11 +1079,11 @@ static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
                                   struct SECKEYPrivateKeyStr **pRetKey)
 {
   struct ssl_connect_data *connssl = (struct ssl_connect_data *)arg;
-  struct Curl_easy *data = connssl->data;
-  const char *nickname = connssl->client_nickname;
+  struct Curl_easy *data = BACKEND->data;
+  const char *nickname = BACKEND->client_nickname;
   static const char pem_slotname[] = "PEM Token #1";
 
-  if(connssl->obj_clicert) {
+  if(BACKEND->obj_clicert) {
     /* use the cert/key provided by PEM reader */
     SECItem cert_der = { 0, NULL, 0 };
     void *proto_win = SSL_RevealPinArg(sock);
@@ -1086,7 +1096,7 @@ static SECStatus SelectClientCert(void *arg, PRFileDesc *sock,
       return SECFailure;
     }
 
-    if(PK11_ReadRawAttribute(PK11_TypeGeneric, connssl->obj_clicert, CKA_VALUE,
+    if(PK11_ReadRawAttribute(PK11_TypeGeneric, BACKEND->obj_clicert, CKA_VALUE,
                              &cert_der) != SECSuccess) {
       failf(data, "NSS: CKA_VALUE not found in PK11 generic object");
       PK11_FreeSlot(slot);
@@ -1351,7 +1361,7 @@ static CURLcode nss_init(struct Curl_easy *data)
  * @retval 0 error initializing SSL
  * @retval 1 SSL initialized successfully
  */
-int Curl_nss_init(void)
+static int Curl_nss_init(void)
 {
   /* curl_global_init() is not thread-safe so this test is ok */
   if(nss_initlock == NULL) {
@@ -1386,7 +1396,7 @@ CURLcode Curl_nss_force_init(struct Curl_easy *data)
 }
 
 /* Global cleanup */
-void Curl_nss_cleanup(void)
+static void Curl_nss_cleanup(void)
 {
   /* This function isn't required to be threadsafe and this is only done
    * as a safety feature.
@@ -1426,14 +1436,14 @@ void Curl_nss_cleanup(void)
  *     0 means the connection has been closed
  *    -1 means the connection status is unknown
  */
-int
-Curl_nss_check_cxn(struct connectdata *conn)
+static int Curl_nss_check_cxn(struct connectdata *conn)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[FIRSTSOCKET];
   int rc;
   char buf;
 
   rc =
-    PR_Recv(conn->ssl[FIRSTSOCKET].handle, (void *)&buf, 1, PR_MSG_PEEK,
+    PR_Recv(BACKEND->handle, (void *)&buf, 1, PR_MSG_PEEK,
             PR_SecondsToInterval(1));
   if(rc > 0)
     return 1; /* connection still in place */
@@ -1447,48 +1457,49 @@ Curl_nss_check_cxn(struct connectdata *conn)
 static void nss_close(struct ssl_connect_data *connssl)
 {
   /* before the cleanup, check whether we are using a client certificate */
-  const bool client_cert = (connssl->client_nickname != NULL)
-    || (connssl->obj_clicert != NULL);
+  const bool client_cert = (BACKEND->client_nickname != NULL)
+    || (BACKEND->obj_clicert != NULL);
 
-  free(connssl->client_nickname);
-  connssl->client_nickname = NULL;
+  free(BACKEND->client_nickname);
+  BACKEND->client_nickname = NULL;
 
   /* destroy all NSS objects in order to avoid failure of NSS shutdown */
-  Curl_llist_destroy(&connssl->obj_list, NULL);
-  connssl->obj_clicert = NULL;
+  Curl_llist_destroy(&BACKEND->obj_list, NULL);
+  BACKEND->obj_clicert = NULL;
 
-  if(connssl->handle) {
+  if(BACKEND->handle) {
     if(client_cert)
       /* A server might require different authentication based on the
        * particular path being requested by the client.  To support this
        * scenario, we must ensure that a connection will never reuse the
        * authentication data from a previous connection. */
-      SSL_InvalidateSession(connssl->handle);
+      SSL_InvalidateSession(BACKEND->handle);
 
-    PR_Close(connssl->handle);
-    connssl->handle = NULL;
+    PR_Close(BACKEND->handle);
+    BACKEND->handle = NULL;
   }
 }
 
 /*
  * This function is called when an SSL connection is closed.
  */
-void Curl_nss_close(struct connectdata *conn, int sockindex)
+static void Curl_nss_close(struct connectdata *conn, int sockindex)
 {
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   struct ssl_connect_data *connssl_proxy = &conn->proxy_ssl[sockindex];
 
-  if(connssl->handle || connssl_proxy->handle) {
+  if(BACKEND->handle || connssl_proxy->backend->handle) {
     /* NSS closes the socket we previously handed to it, so we must mark it
        as closed to avoid double close */
     fake_sclose(conn->sock[sockindex]);
     conn->sock[sockindex] = CURL_SOCKET_BAD;
   }
 
-  if(connssl->handle)
-    /* nss_close(connssl) will transitively close also connssl_proxy->handle
-       if both are used. Clear it to avoid a double close leading to crash. */
-    connssl_proxy->handle = NULL;
+  if(BACKEND->handle)
+    /* nss_close(connssl) will transitively close also
+       connssl_proxy->backend->handle if both are used. Clear it to avoid
+       a double close leading to crash. */
+    connssl_proxy->backend->handle = NULL;
 
   nss_close(connssl);
   nss_close(connssl_proxy);
@@ -1732,7 +1743,7 @@ static CURLcode nss_fail_connect(struct ssl_connect_data *connssl,
   }
 
   /* cleanup on connection failure */
-  Curl_llist_destroy(&connssl->obj_list, NULL);
+  Curl_llist_destroy(&BACKEND->obj_list, NULL);
 
   return curlerr;
 }
@@ -1746,7 +1757,7 @@ static CURLcode nss_set_blocking(struct ssl_connect_data *connssl,
   sock_opt.option = PR_SockOpt_Nonblocking;
   sock_opt.value.non_blocking = !blocking;
 
-  if(PR_SetSocketOption(connssl->handle, &sock_opt) != PR_SUCCESS)
+  if(PR_SetSocketOption(BACKEND->handle, &sock_opt) != PR_SUCCESS)
     return nss_fail_connect(connssl, data, CURLE_SSL_CONNECT_ERROR);
 
   return CURLE_OK;
@@ -1770,10 +1781,10 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
     SSL_LIBRARY_VERSION_TLS_1_0   /* max */
   };
 
-  connssl->data = data;
+  BACKEND->data = data;
 
   /* list of all NSS objects we need to destroy in Curl_nss_close() */
-  Curl_llist_init(&connssl->obj_list, nss_destroy_object);
+  Curl_llist_init(&BACKEND->obj_list, nss_destroy_object);
 
   /* FIXME. NSS doesn't support multiple databases open at the same time. */
   PR_Lock(nss_initlock);
@@ -1882,7 +1893,7 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
     char *nickname = dup_nickname(data, SSL_SET_OPTION(cert));
     if(nickname) {
       /* we are not going to use libnsspem.so to read the client cert */
-      connssl->obj_clicert = NULL;
+      BACKEND->obj_clicert = NULL;
     }
     else {
       CURLcode rv = cert_stuff(conn, sockindex, SSL_SET_OPTION(cert),
@@ -1895,10 +1906,10 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
     }
 
     /* store the nickname for SelectClientCert() called during handshake */
-    connssl->client_nickname = nickname;
+    BACKEND->client_nickname = nickname;
   }
   else
-    connssl->client_nickname = NULL;
+    BACKEND->client_nickname = NULL;
 
   if(SSL_GetClientAuthDataHook(model, SelectClientCert,
                                (void *)connssl) != SECSuccess) {
@@ -1908,8 +1919,8 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
 
   if(conn->proxy_ssl[sockindex].use) {
     DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
-    DEBUGASSERT(conn->proxy_ssl[sockindex].handle != NULL);
-    nspr_io = conn->proxy_ssl[sockindex].handle;
+    DEBUGASSERT(conn->proxy_ssl[sockindex].backend->handle != NULL);
+    nspr_io = conn->proxy_ssl[sockindex].backend->handle;
     second_layer = TRUE;
   }
   else {
@@ -1939,8 +1950,8 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
   }
 
   /* import our model socket onto the current I/O stack */
-  connssl->handle = SSL_ImportFD(model, nspr_io);
-  if(!connssl->handle) {
+  BACKEND->handle = SSL_ImportFD(model, nspr_io);
+  if(!BACKEND->handle) {
     if(!second_layer)
       PR_Close(nspr_io);
     goto error;
@@ -1951,36 +1962,36 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
 
   /* This is the password associated with the cert that we're using */
   if(SSL_SET_OPTION(key_passwd)) {
-    SSL_SetPKCS11PinArg(connssl->handle, SSL_SET_OPTION(key_passwd));
+    SSL_SetPKCS11PinArg(BACKEND->handle, SSL_SET_OPTION(key_passwd));
   }
 
 #ifdef SSL_ENABLE_OCSP_STAPLING
   if(SSL_CONN_CONFIG(verifystatus)) {
-    if(SSL_OptionSet(connssl->handle, SSL_ENABLE_OCSP_STAPLING, PR_TRUE)
+    if(SSL_OptionSet(BACKEND->handle, SSL_ENABLE_OCSP_STAPLING, PR_TRUE)
         != SECSuccess)
       goto error;
   }
 #endif
 
 #ifdef SSL_ENABLE_NPN
-  if(SSL_OptionSet(connssl->handle, SSL_ENABLE_NPN, conn->bits.tls_enable_npn
+  if(SSL_OptionSet(BACKEND->handle, SSL_ENABLE_NPN, conn->bits.tls_enable_npn
                    ? PR_TRUE : PR_FALSE) != SECSuccess)
     goto error;
 #endif
 
 #ifdef SSL_ENABLE_ALPN
-  if(SSL_OptionSet(connssl->handle, SSL_ENABLE_ALPN, conn->bits.tls_enable_alpn
+  if(SSL_OptionSet(BACKEND->handle, SSL_ENABLE_ALPN, conn->bits.tls_enable_alpn
                    ? PR_TRUE : PR_FALSE) != SECSuccess)
     goto error;
 #endif
 
 #if NSSVERNUM >= 0x030f04 /* 3.15.4 */
   if(data->set.ssl.falsestart) {
-    if(SSL_OptionSet(connssl->handle, SSL_ENABLE_FALSE_START, PR_TRUE)
+    if(SSL_OptionSet(BACKEND->handle, SSL_ENABLE_FALSE_START, PR_TRUE)
         != SECSuccess)
       goto error;
 
-    if(SSL_SetCanFalseStartCallback(connssl->handle, CanFalseStartCallback,
+    if(SSL_SetCanFalseStartCallback(BACKEND->handle, CanFalseStartCallback,
         conn) != SECSuccess)
       goto error;
   }
@@ -1992,7 +2003,8 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
     unsigned char protocols[128];
 
 #ifdef USE_NGHTTP2
-    if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
+    if(data->set.httpversion >= CURL_HTTP_VERSION_2 &&
+       (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)) {
       protocols[cur++] = NGHTTP2_PROTO_VERSION_ID_LEN;
       memcpy(&protocols[cur], NGHTTP2_PROTO_VERSION_ID,
           NGHTTP2_PROTO_VERSION_ID_LEN);
@@ -2003,24 +2015,24 @@ static CURLcode nss_setup_connect(struct connectdata *conn, int sockindex)
     memcpy(&protocols[cur], ALPN_HTTP_1_1, ALPN_HTTP_1_1_LENGTH);
     cur += ALPN_HTTP_1_1_LENGTH;
 
-    if(SSL_SetNextProtoNego(connssl->handle, protocols, cur) != SECSuccess)
+    if(SSL_SetNextProtoNego(BACKEND->handle, protocols, cur) != SECSuccess)
       goto error;
   }
 #endif
 
 
   /* Force handshake on next I/O */
-  if(SSL_ResetHandshake(connssl->handle, /* asServer */ PR_FALSE)
+  if(SSL_ResetHandshake(BACKEND->handle, /* asServer */ PR_FALSE)
       != SECSuccess)
     goto error;
 
   /* propagate hostname to the TLS layer */
-  if(SSL_SetURL(connssl->handle, SSL_IS_PROXY() ? conn->http_proxy.host.name :
+  if(SSL_SetURL(BACKEND->handle, SSL_IS_PROXY() ? conn->http_proxy.host.name :
                 conn->host.name) != SECSuccess)
     goto error;
 
   /* prevent NSS from re-using the session for a different hostname */
-  if(SSL_SetSockPeerID(connssl->handle, SSL_IS_PROXY() ?
+  if(SSL_SetSockPeerID(BACKEND->handle, SSL_IS_PROXY() ?
                        conn->http_proxy.host.name : conn->host.name)
      != SECSuccess)
     goto error;
@@ -2057,7 +2069,7 @@ static CURLcode nss_do_connect(struct connectdata *conn, int sockindex)
 
   /* Force the handshake now */
   timeout = PR_MillisecondsToInterval((PRUint32) time_left);
-  if(SSL_ForceHandshakeWithTimeout(connssl->handle, timeout) != SECSuccess) {
+  if(SSL_ForceHandshakeWithTimeout(BACKEND->handle, timeout) != SECSuccess) {
     if(PR_GetError() == PR_WOULD_BLOCK_ERROR)
       /* blocking direction is updated by nss_update_connecting_state() */
       return CURLE_AGAIN;
@@ -2068,7 +2080,7 @@ static CURLcode nss_do_connect(struct connectdata *conn, int sockindex)
     goto error;
   }
 
-  result = display_conn_info(conn, connssl->handle);
+  result = display_conn_info(conn, BACKEND->handle);
   if(result)
     goto error;
 
@@ -2077,7 +2089,7 @@ static CURLcode nss_do_connect(struct connectdata *conn, int sockindex)
     char *nickname = dup_nickname(data, SSL_SET_OPTION(issuercert));
     if(nickname) {
       /* we support only nicknames in case of issuercert for now */
-      ret = check_issuer_cert(connssl->handle, nickname);
+      ret = check_issuer_cert(BACKEND->handle, nickname);
       free(nickname);
     }
 
@@ -2163,13 +2175,13 @@ static CURLcode nss_connect_common(struct connectdata *conn, int sockindex,
   return CURLE_OK;
 }
 
-CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
+static CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex)
 {
   return nss_connect_common(conn, sockindex, /* blocking */ NULL);
 }
 
-CURLcode Curl_nss_connect_nonblocking(struct connectdata *conn,
-                                      int sockindex, bool *done)
+static CURLcode Curl_nss_connect_nonblocking(struct connectdata *conn,
+                                             int sockindex, bool *done)
 {
   return nss_connect_common(conn, sockindex, done);
 }
@@ -2180,8 +2192,14 @@ static ssize_t nss_send(struct connectdata *conn,  /* connection data */
                         size_t len,                /* amount to write */
                         CURLcode *curlcode)
 {
-  ssize_t rc = PR_Send(conn->ssl[sockindex].handle, mem, (int)len, 0,
-                       PR_INTERVAL_NO_WAIT);
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  ssize_t rc;
+
+  /* The SelectClientCert() hook uses this for infof() and failf() but the
+     handle stored in nss_setup_connect() could have already been freed. */
+  BACKEND->data = conn->data;
+
+  rc = PR_Send(BACKEND->handle, mem, (int)len, 0, PR_INTERVAL_NO_WAIT);
   if(rc < 0) {
     PRInt32 err = PR_GetError();
     if(err == PR_WOULD_BLOCK_ERROR)
@@ -2205,14 +2223,21 @@ static ssize_t nss_send(struct connectdata *conn,  /* connection data */
   return rc; /* number of bytes */
 }
 
-static ssize_t nss_recv(struct connectdata * conn, /* connection data */
-                        int num,                   /* socketindex */
+static ssize_t nss_recv(struct connectdata *conn,  /* connection data */
+                        int sockindex,             /* socketindex */
                         char *buf,                 /* store read data here */
                         size_t buffersize,         /* max amount to read */
                         CURLcode *curlcode)
 {
-  ssize_t nread = PR_Recv(conn->ssl[num].handle, buf, (int)buffersize, 0,
-                          PR_INTERVAL_NO_WAIT);
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  ssize_t nread;
+
+  /* The SelectClientCert() hook uses this for infof() and failf() but the
+     handle stored in nss_setup_connect() could have already been freed. */
+  BACKEND->data = conn->data;
+
+  nread = PR_Recv(BACKEND->handle, buf, (int)buffersize, 0,
+                  PR_INTERVAL_NO_WAIT);
   if(nread < 0) {
     /* failed SSL read */
     PRInt32 err = PR_GetError();
@@ -2238,22 +2263,22 @@ static ssize_t nss_recv(struct connectdata * conn, /* connection data */
   return nread;
 }
 
-size_t Curl_nss_version(char *buffer, size_t size)
+static size_t Curl_nss_version(char *buffer, size_t size)
 {
   return snprintf(buffer, size, "NSS/%s", NSS_VERSION);
 }
 
 /* data might be NULL */
-int Curl_nss_seed(struct Curl_easy *data)
+static int Curl_nss_seed(struct Curl_easy *data)
 {
   /* make sure that NSS is initialized */
   return !!Curl_nss_force_init(data);
 }
 
 /* data might be NULL */
-CURLcode Curl_nss_random(struct Curl_easy *data,
-                         unsigned char *entropy,
-                         size_t length)
+static CURLcode Curl_nss_random(struct Curl_easy *data,
+                                unsigned char *entropy,
+                                size_t length)
 {
   Curl_nss_seed(data);  /* Initiate the seed if not already done */
 
@@ -2264,10 +2289,10 @@ CURLcode Curl_nss_random(struct Curl_easy *data,
   return CURLE_OK;
 }
 
-void Curl_nss_md5sum(unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *md5sum, /* output */
-                     size_t md5len)
+static CURLcode Curl_nss_md5sum(unsigned char *tmp, /* input */
+                                size_t tmplen,
+                                unsigned char *md5sum, /* output */
+                                size_t md5len)
 {
   PK11Context *MD5pw = PK11_CreateDigestContext(SEC_OID_MD5);
   unsigned int MD5out;
@@ -2275,12 +2300,14 @@ void Curl_nss_md5sum(unsigned char *tmp, /* input */
   PK11_DigestOp(MD5pw, tmp, curlx_uztoui(tmplen));
   PK11_DigestFinal(MD5pw, md5sum, &MD5out, curlx_uztoui(md5len));
   PK11_DestroyContext(MD5pw, PR_TRUE);
+
+  return CURLE_OK;
 }
 
-void Curl_nss_sha256sum(const unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *sha256sum, /* output */
-                     size_t sha256len)
+static void Curl_nss_sha256sum(const unsigned char *tmp, /* input */
+                               size_t tmplen,
+                               unsigned char *sha256sum, /* output */
+                               size_t sha256len)
 {
   PK11Context *SHA256pw = PK11_CreateDigestContext(SEC_OID_SHA256);
   unsigned int SHA256out;
@@ -2290,7 +2317,7 @@ void Curl_nss_sha256sum(const unsigned char *tmp, /* input */
   PK11_DestroyContext(SHA256pw, PR_TRUE);
 }
 
-bool Curl_nss_cert_status_request(void)
+static bool Curl_nss_cert_status_request(void)
 {
 #ifdef SSL_ENABLE_OCSP_STAPLING
   return TRUE;
@@ -2299,7 +2326,7 @@ bool Curl_nss_cert_status_request(void)
 #endif
 }
 
-bool Curl_nss_false_start(void)
+static bool Curl_nss_false_start(void)
 {
 #if NSSVERNUM >= 0x030f04 /* 3.15.4 */
   return TRUE;
@@ -2308,4 +2335,46 @@ bool Curl_nss_false_start(void)
 #endif
 }
 
+static void *Curl_nss_get_internals(struct ssl_connect_data *connssl,
+                                    CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return BACKEND->handle;
+}
+
+const struct Curl_ssl Curl_ssl_nss = {
+  { CURLSSLBACKEND_NSS, "nss" }, /* info */
+
+  1, /* have_ca_path */
+  1, /* have_certinfo */
+  1, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  1, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_nss_init,                /* init */
+  Curl_nss_cleanup,             /* cleanup */
+  Curl_nss_version,             /* version */
+  Curl_nss_check_cxn,           /* check_cxn */
+  /* NSS has no shutdown function provided and thus always fail */
+  Curl_none_shutdown,           /* shutdown */
+  Curl_none_data_pending,       /* data_pending */
+  Curl_nss_random,              /* random */
+  Curl_nss_cert_status_request, /* cert_status_request */
+  Curl_nss_connect,             /* connect */
+  Curl_nss_connect_nonblocking, /* connect_nonblocking */
+  Curl_nss_get_internals,       /* get_internals */
+  Curl_nss_close,               /* close */
+  Curl_none_close_all,          /* close_all */
+  /* NSS has its own session ID cache */
+  Curl_none_session_free,       /* session_free */
+  Curl_none_set_engine,         /* set_engine */
+  Curl_none_set_engine_default, /* set_engine_default */
+  Curl_none_engines_list,       /* engines_list */
+  Curl_nss_false_start,         /* false_start */
+  Curl_nss_md5sum,              /* md5sum */
+  Curl_nss_sha256sum            /* sha256sum */
+};
+
 #endif /* USE_NSS */
diff --git a/lib/vtls/nssg.h b/lib/vtls/nssg.h
index 8c46929..41e51b0 100644
--- a/lib/vtls/nssg.h
+++ b/lib/vtls/nssg.h
@@ -30,79 +30,10 @@
 
 #include "urldata.h"
 
-CURLcode Curl_nss_connect(struct connectdata *conn, int sockindex);
-CURLcode Curl_nss_connect_nonblocking(struct connectdata *conn,
-                                      int sockindex,
-                                      bool *done);
-/* close a SSL connection */
-void Curl_nss_close(struct connectdata *conn, int sockindex);
-
-int Curl_nss_init(void);
-void Curl_nss_cleanup(void);
-
-size_t Curl_nss_version(char *buffer, size_t size);
-int Curl_nss_check_cxn(struct connectdata *cxn);
-int Curl_nss_seed(struct Curl_easy *data);
-
 /* initialize NSS library if not already */
 CURLcode Curl_nss_force_init(struct Curl_easy *data);
 
-CURLcode Curl_nss_random(struct Curl_easy *data,
-                         unsigned char *entropy,
-                         size_t length);
-
-void Curl_nss_md5sum(unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *md5sum, /* output */
-                     size_t md5len);
-
-void Curl_nss_sha256sum(const unsigned char *tmp, /* input */
-                     size_t tmplen,
-                     unsigned char *sha256sum, /* output */
-                     size_t sha256len);
-
-bool Curl_nss_cert_status_request(void);
-
-bool Curl_nss_false_start(void);
-
-/* Support HTTPS-proxy */
-#define HTTPS_PROXY_SUPPORT 1
-
-/* Set the API backend definition to NSS */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_NSS
-
-/* this backend supports the CAPATH option */
-#define have_curlssl_ca_path 1
-
-/* this backend supports CURLOPT_CERTINFO */
-#define have_curlssl_certinfo 1
-
-/* this backends supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-
-/* API setup for NSS */
-#define curlssl_init Curl_nss_init
-#define curlssl_cleanup Curl_nss_cleanup
-#define curlssl_connect Curl_nss_connect
-#define curlssl_connect_nonblocking Curl_nss_connect_nonblocking
-
-/* NSS has its own session ID cache */
-#define curlssl_session_free(x) Curl_nop_stmt
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_nss_close
-/* NSS has no shutdown function provided and thus always fail */
-#define curlssl_shutdown(x,y) ((void)x, (void)y, 1)
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_nss_version
-#define curlssl_check_cxn(x) Curl_nss_check_cxn(x)
-#define curlssl_data_pending(x,y) ((void)x, (void)y, 0)
-#define curlssl_random(x,y,z) Curl_nss_random(x,y,z)
-#define curlssl_md5sum(a,b,c,d) Curl_nss_md5sum(a,b,c,d)
-#define curlssl_sha256sum(a,b,c,d) Curl_nss_sha256sum(a,b,c,d)
-#define curlssl_cert_status_request() Curl_nss_cert_status_request()
-#define curlssl_false_start() Curl_nss_false_start()
+extern const struct Curl_ssl Curl_ssl_nss;
 
 #endif /* USE_NSS */
 #endif /* HEADER_CURL_NSSG_H */
diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c
index dbee369..4253160 100644
--- a/lib/vtls/openssl.c
+++ b/lib/vtls/openssl.c
@@ -51,8 +51,10 @@
 #include "strcase.h"
 #include "hostcheck.h"
 #include "curl_printf.h"
-
 #include <openssl/ssl.h>
+#ifdef HAVE_OPENSSL_ENGINE_H
+#include <openssl/engine.h>
+#endif
 #include <openssl/rand.h>
 #include <openssl/x509v3.h>
 #ifndef OPENSSL_NO_DSA
@@ -64,6 +66,8 @@
 #include <openssl/conf.h>
 #include <openssl/bn.h>
 #include <openssl/rsa.h>
+#include <openssl/bio.h>
+#include <openssl/buffer.h>
 
 #ifdef HAVE_OPENSSL_PKCS12_H
 #include <openssl/pkcs12.h>
@@ -111,7 +115,6 @@
 #define HAVE_OPAQUE_EVP_PKEY 1 /* since 1.1.0 -pre3 */
 #define HAVE_OPAQUE_RSA_DSA_DH 1 /* since 1.1.0 -pre5 */
 #define CONST_EXTS const
-#define CONST_ASN1_BIT_STRING const
 #define HAVE_ERR_REMOVE_THREAD_STATE_DEPRECATED 1
 #else
 /* For OpenSSL before 1.1.0 */
@@ -119,7 +122,6 @@
 #define X509_get0_notBefore(x) X509_get_notBefore(x)
 #define X509_get0_notAfter(x) X509_get_notAfter(x)
 #define CONST_EXTS /* nope */
-#define CONST_ASN1_BIT_STRING /* nope */
 #ifdef LIBRESSL_VERSION_NUMBER
 static unsigned long OpenSSL_version_num(void)
 {
@@ -146,6 +148,20 @@ static unsigned long OpenSSL_version_num(void)
 #define OPENSSL_load_builtin_modules(x)
 #endif
 
+/*
+ * Whether SSL_CTX_set_keylog_callback is available.
+ * OpenSSL: supported since 1.1.1 https://github.com/openssl/openssl/pull/2287
+ * BoringSSL: supported since d28f59c27bac (committed 2015-11-19), the
+ *            BORINGSSL_201512 macro from 2016-01-21 should be close enough.
+ * LibreSSL: unsupported in at least 2.5.1 (explicitly check for it since it
+ *           lies and pretends to be OpenSSL 2.0.0).
+ */
+#if (OPENSSL_VERSION_NUMBER >= 0x10101000L && \
+     !defined(LIBRESSL_VERSION_NUMBER)) || \
+    defined(BORINGSSL_201512)
+#define HAVE_KEYLOG_CALLBACK
+#endif
+
 #if defined(LIBRESSL_VERSION_NUMBER)
 #define OSSL_PACKAGE "LibreSSL"
 #elif defined(OPENSSL_IS_BORINGSSL)
@@ -154,6 +170,38 @@ static unsigned long OpenSSL_version_num(void)
 #define OSSL_PACKAGE "OpenSSL"
 #endif
 
+#if (OPENSSL_VERSION_NUMBER >= 0x10100000L)
+/* up2date versions of OpenSSL maintain the default reasonably secure without
+ * breaking compatibility, so it is better not to override the default by curl
+ */
+#define DEFAULT_CIPHER_SELECTION NULL
+#else
+/* ... but it is not the case with old versions of OpenSSL */
+#define DEFAULT_CIPHER_SELECTION \
+  "ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH"
+#endif
+
+#ifdef ENABLE_SSLKEYLOGFILE
+typedef struct ssl_tap_state {
+  int master_key_length;
+  unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
+  unsigned char client_random[SSL3_RANDOM_SIZE];
+} ssl_tap_state_t;
+#endif /* ENABLE_SSLKEYLOGFILE */
+
+struct ssl_backend_data {
+  /* these ones requires specific SSL-types */
+  SSL_CTX* ctx;
+  SSL*     handle;
+  X509*    server_cert;
+#ifdef ENABLE_SSLKEYLOGFILE
+  /* tap_state holds the last seen master key if we're logging them */
+  ssl_tap_state_t tap_state;
+#endif
+};
+
+#define BACKEND connssl->backend
+
 /*
  * Number of bytes to read from the random number seed file. This must be
  * a finite value (because some entropy "files" like /dev/urandom have
@@ -162,6 +210,112 @@ static unsigned long OpenSSL_version_num(void)
  */
 #define RAND_LOAD_LENGTH 1024
 
+#ifdef ENABLE_SSLKEYLOGFILE
+/* The fp for the open SSLKEYLOGFILE, or NULL if not open */
+static FILE *keylog_file_fp;
+
+#ifdef HAVE_KEYLOG_CALLBACK
+static void ossl_keylog_callback(const SSL *ssl, const char *line)
+{
+  (void)ssl;
+
+  /* Using fputs here instead of fprintf since libcurl's fprintf replacement
+     may not be thread-safe. */
+  if(keylog_file_fp && line && *line) {
+    char stackbuf[256];
+    char *buf;
+    size_t linelen = strlen(line);
+
+    if(linelen <= sizeof(stackbuf) - 2)
+      buf = stackbuf;
+    else {
+      buf = malloc(linelen + 2);
+      if(!buf)
+        return;
+    }
+    strncpy(buf, line, linelen);
+    buf[linelen] = '\n';
+    buf[linelen + 1] = '\0';
+
+    fputs(buf, keylog_file_fp);
+    if(buf != stackbuf)
+      free(buf);
+  }
+}
+#else
+#define KEYLOG_PREFIX      "CLIENT_RANDOM "
+#define KEYLOG_PREFIX_LEN  (sizeof(KEYLOG_PREFIX) - 1)
+/*
+ * tap_ssl_key is called by libcurl to make the CLIENT_RANDOMs if the OpenSSL
+ * being used doesn't have native support for doing that.
+ */
+static void tap_ssl_key(const SSL *ssl, ssl_tap_state_t *state)
+{
+  const char *hex = "0123456789ABCDEF";
+  int pos, i;
+  char line[KEYLOG_PREFIX_LEN + 2 * SSL3_RANDOM_SIZE + 1 +
+            2 * SSL_MAX_MASTER_KEY_LENGTH + 1 + 1];
+  const SSL_SESSION *session = SSL_get_session(ssl);
+  unsigned char client_random[SSL3_RANDOM_SIZE];
+  unsigned char master_key[SSL_MAX_MASTER_KEY_LENGTH];
+  int master_key_length = 0;
+
+  if(!session || !keylog_file_fp)
+    return;
+
+#if OPENSSL_VERSION_NUMBER >= 0x10100000L
+  /* ssl->s3 is not checked in openssl 1.1.0-pre6, but let's assume that
+   * we have a valid SSL context if we have a non-NULL session. */
+  SSL_get_client_random(ssl, client_random, SSL3_RANDOM_SIZE);
+  master_key_length =
+    SSL_SESSION_get_master_key(session, master_key, SSL_MAX_MASTER_KEY_LENGTH);
+#else
+  if(ssl->s3 && session->master_key_length > 0) {
+    master_key_length = session->master_key_length;
+    memcpy(master_key, session->master_key, session->master_key_length);
+    memcpy(client_random, ssl->s3->client_random, SSL3_RANDOM_SIZE);
+  }
+#endif
+
+  if(master_key_length <= 0)
+    return;
+
+  /* Skip writing keys if there is no key or it did not change. */
+  if(state->master_key_length == master_key_length &&
+     !memcmp(state->master_key, master_key, master_key_length) &&
+     !memcmp(state->client_random, client_random, SSL3_RANDOM_SIZE)) {
+    return;
+  }
+
+  state->master_key_length = master_key_length;
+  memcpy(state->master_key, master_key, master_key_length);
+  memcpy(state->client_random, client_random, SSL3_RANDOM_SIZE);
+
+  memcpy(line, KEYLOG_PREFIX, KEYLOG_PREFIX_LEN);
+  pos = KEYLOG_PREFIX_LEN;
+
+  /* Client Random for SSLv3/TLS */
+  for(i = 0; i < SSL3_RANDOM_SIZE; i++) {
+    line[pos++] = hex[client_random[i] >> 4];
+    line[pos++] = hex[client_random[i] & 0xF];
+  }
+  line[pos++] = ' ';
+
+  /* Master Secret (size is at most SSL_MAX_MASTER_KEY_LENGTH) */
+  for(i = 0; i < master_key_length; i++) {
+    line[pos++] = hex[master_key[i] >> 4];
+    line[pos++] = hex[master_key[i] & 0xF];
+  }
+  line[pos++] = '\n';
+  line[pos] = '\0';
+
+  /* Using fputs here instead of fprintf since libcurl's fprintf replacement
+     may not be thread-safe. */
+  fputs(line, keylog_file_fp);
+}
+#endif /* !HAVE_KEYLOG_CALLBACK */
+#endif /* ENABLE_SSLKEYLOGFILE */
+
 static const char *SSL_ERROR_to_str(int err)
 {
   switch(err) {
@@ -216,7 +370,7 @@ static int passwd_callback(char *buf, int num, int encrypting,
   if(!encrypting) {
     int klen = curlx_uztosi(strlen((char *)global_passwd));
     if(num > klen) {
-      memcpy(buf, global_passwd, klen+1);
+      memcpy(buf, global_passwd, klen + 1);
       return klen;
     }
   }
@@ -236,7 +390,6 @@ static CURLcode Curl_ossl_seed(struct Curl_easy *data)
   /* we have the "SSL is seeded" boolean static to prevent multiple
      time-consuming seedings in vain */
   static bool ssl_seeded = FALSE;
-  int nread=0;
   char fname[256];
 
   if(ssl_seeded)
@@ -256,12 +409,12 @@ static CURLcode Curl_ossl_seed(struct Curl_easy *data)
 #endif
   {
     /* let the option override the define */
-    nread += RAND_load_file((data->set.str[STRING_SSL_RANDOM_FILE]?
-                             data->set.str[STRING_SSL_RANDOM_FILE]:
-                             RANDOM_FILE),
-                            RAND_LOAD_LENGTH);
+    RAND_load_file((data->set.str[STRING_SSL_RANDOM_FILE]?
+                    data->set.str[STRING_SSL_RANDOM_FILE]:
+                    RANDOM_FILE),
+                   RAND_LOAD_LENGTH);
     if(rand_enough())
-      return nread;
+      return CURLE_OK;
   }
 
 #if defined(HAVE_RAND_EGD)
@@ -279,35 +432,47 @@ static CURLcode Curl_ossl_seed(struct Curl_easy *data)
     int ret = RAND_egd(data->set.str[STRING_SSL_EGDSOCKET]?
                        data->set.str[STRING_SSL_EGDSOCKET]:EGD_SOCKET);
     if(-1 != ret) {
-      nread += ret;
       if(rand_enough())
-        return nread;
+        return CURLE_OK;
     }
   }
 #endif
 
-  /* If we get here, it means we need to seed the PRNG using a "silly"
-     approach! */
+  /* fallback to a custom seeding of the PRNG using a hash based on a current
+     time */
   do {
     unsigned char randb[64];
-    int len = sizeof(randb);
-    if(!RAND_bytes(randb, len))
-      break;
-    RAND_add(randb, len, (len >> 1));
+    size_t len = sizeof(randb);
+    size_t i, i_max;
+    for(i = 0, i_max = len / sizeof(struct curltime); i < i_max; ++i) {
+      struct curltime tv = curlx_tvnow();
+      Curl_wait_ms(1);
+      tv.tv_sec *= i + 1;
+      tv.tv_usec *= (unsigned int)i + 2;
+      tv.tv_sec ^= ((curlx_tvnow().tv_sec + curlx_tvnow().tv_usec) *
+                    (i + 3)) << 8;
+      tv.tv_usec ^= (unsigned int) ((curlx_tvnow().tv_sec +
+                                     curlx_tvnow().tv_usec) *
+                                    (i + 4)) << 16;
+      memcpy(&randb[i * sizeof(struct curltime)], &tv,
+             sizeof(struct curltime));
+    }
+    RAND_add(randb, (int)len, (double)len/2);
   } while(!rand_enough());
 
   /* generates a default path for the random seed file */
-  fname[0]=0; /* blank it first */
+  fname[0] = 0; /* blank it first */
   RAND_file_name(fname, sizeof(fname));
   if(fname[0]) {
     /* we got a file name to try */
-    nread += RAND_load_file(fname, RAND_LOAD_LENGTH);
+    RAND_load_file(fname, RAND_LOAD_LENGTH);
     if(rand_enough())
-      return nread;
+      return CURLE_OK;
   }
 
   infof(data, "libcurl is now using a weak random seed!\n");
-  return CURLE_SSL_CONNECT_ERROR; /* confusing error code */
+  return (rand_enough() ? CURLE_OK :
+    CURLE_SSL_CONNECT_ERROR /* confusing error code */);
 }
 
 #ifndef SSL_FILETYPE_ENGINE
@@ -384,6 +549,7 @@ int cert_stuff(struct connectdata *conn,
 {
   struct Curl_easy *data = conn->data;
   char error_buffer[256];
+  bool check_privkey = TRUE;
 
   int file_type = do_file_type(cert_type);
 
@@ -592,7 +758,7 @@ int cert_stuff(struct connectdata *conn,
         break;
       if(!key_file)
         /* cert & key can only be in PEM case in the same file */
-        key_file=cert_file;
+        key_file = cert_file;
       /* FALLTHROUGH */
     case SSL_FILETYPE_ASN1:
       if(SSL_CTX_use_PrivateKey_file(ctx, key_file, file_type) != 1) {
@@ -655,13 +821,13 @@ int cert_stuff(struct connectdata *conn,
       return 0;
     }
 
-    ssl=SSL_new(ctx);
+    ssl = SSL_new(ctx);
     if(!ssl) {
       failf(data, "unable to create an SSL structure");
       return 0;
     }
 
-    x509=SSL_get_certificate(ssl);
+    x509 = SSL_get_certificate(ssl);
 
     /* This version was provided by Evan Jordan and is supposed to not
        leak memory as the previous version: */
@@ -671,17 +837,32 @@ int cert_stuff(struct connectdata *conn,
       EVP_PKEY_free(pktmp);
     }
 
+#ifndef OPENSSL_NO_RSA
+    {
+      /* If RSA is used, don't check the private key if its flags indicate
+       * it doesn't support it. */
+      EVP_PKEY *priv_key = SSL_get_privatekey(ssl);
+      if(EVP_PKEY_id(priv_key) == EVP_PKEY_RSA) {
+        RSA *rsa = EVP_PKEY_get1_RSA(priv_key);
+        if(RSA_flags(rsa) & RSA_METHOD_FLAG_NO_CHECK)
+          check_privkey = FALSE;
+        RSA_free(rsa); /* Decrement reference count */
+      }
+    }
+#endif
+
     SSL_free(ssl);
 
     /* If we are using DSA, we can copy the parameters from
      * the private key */
 
-
-    /* Now we know that a key and cert have been set against
-     * the SSL context */
-    if(!SSL_CTX_check_private_key(ctx)) {
-      failf(data, "Private key does not match the certificate public key");
-      return 0;
+    if(check_privkey == TRUE) {
+      /* Now we know that a key and cert have been set against
+       * the SSL context */
+      if(!SSL_CTX_check_private_key(ctx)) {
+        failf(data, "Private key does not match the certificate public key");
+        return 0;
+      }
     }
   }
   return 1;
@@ -709,7 +890,7 @@ static int x509_name_oneline(X509_NAME *a, char *buf, size_t size)
     size--; /* don't overwrite the buffer end */
 
   memcpy(buf, biomem->data, size);
-  buf[size]=0;
+  buf[size] = 0;
 
   BIO_free(bio_out);
 
@@ -723,8 +904,12 @@ static int x509_name_oneline(X509_NAME *a, char *buf, size_t size)
  * @retval 0 error initializing SSL
  * @retval 1 SSL initialized successfully
  */
-int Curl_ossl_init(void)
+static int Curl_ossl_init(void)
 {
+#ifdef ENABLE_SSLKEYLOGFILE
+  const char *keylog_file_name;
+#endif
+
   OPENSSL_load_builtin_modules();
 
 #ifdef HAVE_ENGINE_LOAD_BUILTIN_ENGINES
@@ -761,11 +946,24 @@ int Curl_ossl_init(void)
   OpenSSL_add_all_algorithms();
 #endif
 
+#ifdef ENABLE_SSLKEYLOGFILE
+  keylog_file_name = curl_getenv("SSLKEYLOGFILE");
+  if(keylog_file_name && !keylog_file_fp) {
+    keylog_file_fp = fopen(keylog_file_name, FOPEN_APPENDTEXT);
+    if(keylog_file_fp) {
+      if(setvbuf(keylog_file_fp, NULL, _IOLBF, 4096)) {
+        fclose(keylog_file_fp);
+        keylog_file_fp = NULL;
+      }
+    }
+  }
+#endif
+
   return 1;
 }
 
 /* Global cleanup */
-void Curl_ossl_cleanup(void)
+static void Curl_ossl_cleanup(void)
 {
 #if (OPENSSL_VERSION_NUMBER >= 0x10100000L) && \
     !defined(LIBRESSL_VERSION_NUMBER)
@@ -797,6 +995,13 @@ void Curl_ossl_cleanup(void)
   SSL_COMP_free_compression_methods();
 #endif
 #endif
+
+#ifdef ENABLE_SSLKEYLOGFILE
+  if(keylog_file_fp) {
+    fclose(keylog_file_fp);
+    keylog_file_fp = NULL;
+  }
+#endif
 }
 
 /*
@@ -807,7 +1012,7 @@ void Curl_ossl_cleanup(void)
  *     0 means the connection has been closed
  *    -1 means the connection status is unknown
  */
-int Curl_ossl_check_cxn(struct connectdata *conn)
+static int Curl_ossl_check_cxn(struct connectdata *conn)
 {
   /* SSL_peek takes data out of the raw recv buffer without peeking so we use
      recv MSG_PEEK instead. Bug #795 */
@@ -853,7 +1058,8 @@ int Curl_ossl_check_cxn(struct connectdata *conn)
 
 /* Selects an OpenSSL crypto engine
  */
-CURLcode Curl_ossl_set_engine(struct Curl_easy *data, const char *engine)
+static CURLcode Curl_ossl_set_engine(struct Curl_easy *data,
+                                     const char *engine)
 {
 #if defined(USE_OPENSSL) && defined(HAVE_OPENSSL_ENGINE_H)
   ENGINE *e;
@@ -898,7 +1104,7 @@ CURLcode Curl_ossl_set_engine(struct Curl_easy *data, const char *engine)
 
 /* Sets engine as default for all SSL operations
  */
-CURLcode Curl_ossl_set_engine_default(struct Curl_easy *data)
+static CURLcode Curl_ossl_set_engine_default(struct Curl_easy *data)
 {
 #ifdef HAVE_OPENSSL_ENGINE_H
   if(data->state.engine) {
@@ -920,7 +1126,7 @@ CURLcode Curl_ossl_set_engine_default(struct Curl_easy *data)
 
 /* Return list of OpenSSL crypto engine names.
  */
-struct curl_slist *Curl_ossl_engines_list(struct Curl_easy *data)
+static struct curl_slist *Curl_ossl_engines_list(struct Curl_easy *data)
 {
   struct curl_slist *list = NULL;
 #if defined(USE_OPENSSL) && defined(HAVE_OPENSSL_ENGINE_H)
@@ -943,23 +1149,23 @@ struct curl_slist *Curl_ossl_engines_list(struct Curl_easy *data)
 
 static void ossl_close(struct ssl_connect_data *connssl)
 {
-  if(connssl->handle) {
-    (void)SSL_shutdown(connssl->handle);
-    SSL_set_connect_state(connssl->handle);
+  if(BACKEND->handle) {
+    (void)SSL_shutdown(BACKEND->handle);
+    SSL_set_connect_state(BACKEND->handle);
 
-    SSL_free(connssl->handle);
-    connssl->handle = NULL;
+    SSL_free(BACKEND->handle);
+    BACKEND->handle = NULL;
   }
-  if(connssl->ctx) {
-    SSL_CTX_free(connssl->ctx);
-    connssl->ctx = NULL;
+  if(BACKEND->ctx) {
+    SSL_CTX_free(BACKEND->ctx);
+    BACKEND->ctx = NULL;
   }
 }
 
 /*
  * This function is called when an SSL connection is closed.
  */
-void Curl_ossl_close(struct connectdata *conn, int sockindex)
+static void Curl_ossl_close(struct connectdata *conn, int sockindex)
 {
   ossl_close(&conn->ssl[sockindex]);
   ossl_close(&conn->proxy_ssl[sockindex]);
@@ -969,7 +1175,7 @@ void Curl_ossl_close(struct connectdata *conn, int sockindex)
  * This function is called to shut down the SSL layer but keep the
  * socket open (CCC - Clear Command Channel)
  */
-int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
+static int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
 {
   int retval = 0;
   struct ssl_connect_data *connssl = &conn->ssl[sockindex];
@@ -988,9 +1194,9 @@ int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
      we do not send one. Let's hope other servers do the same... */
 
   if(data->set.ftp_ccc == CURLFTPSSL_CCC_ACTIVE)
-      (void)SSL_shutdown(connssl->handle);
+      (void)SSL_shutdown(BACKEND->handle);
 
-  if(connssl->handle) {
+  if(BACKEND->handle) {
     buffsize = (int)sizeof(buf);
     while(!done) {
       int what = SOCKET_READABLE(conn->sock[sockindex],
@@ -1000,9 +1206,8 @@ int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
 
         /* Something to read, let's do it and hope that it is the close
            notify alert from the server */
-        nread = (ssize_t)SSL_read(conn->ssl[sockindex].handle, buf,
-                                  buffsize);
-        err = SSL_get_error(conn->ssl[sockindex].handle, (int)nread);
+        nread = (ssize_t)SSL_read(BACKEND->handle, buf, buffsize);
+        err = SSL_get_error(BACKEND->handle, (int)nread);
 
         switch(err) {
         case SSL_ERROR_NONE: /* this is not an error */
@@ -1047,7 +1252,7 @@ int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
 
     if(data->set.verbose) {
 #ifdef HAVE_SSL_GET_SHUTDOWN
-      switch(SSL_get_shutdown(connssl->handle)) {
+      switch(SSL_get_shutdown(BACKEND->handle)) {
       case SSL_SENT_SHUTDOWN:
         infof(data, "SSL_get_shutdown() returned SSL_SENT_SHUTDOWN\n");
         break;
@@ -1062,13 +1267,13 @@ int Curl_ossl_shutdown(struct connectdata *conn, int sockindex)
 #endif
     }
 
-    SSL_free(connssl->handle);
-    connssl->handle = NULL;
+    SSL_free(BACKEND->handle);
+    BACKEND->handle = NULL;
   }
   return retval;
 }
 
-void Curl_ossl_session_free(void *ptr)
+static void Curl_ossl_session_free(void *ptr)
 {
   /* free the ID */
   SSL_SESSION_free(ptr);
@@ -1078,7 +1283,7 @@ void Curl_ossl_session_free(void *ptr)
  * This function is called when the 'data' struct is going away. Close
  * down everything and free all resources!
  */
-void Curl_ossl_close_all(struct Curl_easy *data)
+static void Curl_ossl_close_all(struct Curl_easy *data)
 {
 #ifdef HAVE_OPENSSL_ENGINE_H
   if(data->state.engine) {
@@ -1170,7 +1375,7 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert)
     numalts = sk_GENERAL_NAME_num(altnames);
 
     /* loop through all alternatives - until a dnsmatch */
-    for(i=0; (i < numalts) && !dnsmatched; i++) {
+    for(i = 0; (i < numalts) && !dnsmatched; i++) {
       /* get a handle to alternative name number i */
       const GENERAL_NAME *check = sk_GENERAL_NAME_value(altnames, i);
 
@@ -1239,7 +1444,7 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert)
   else {
     /* we have to look to the last occurrence of a commonName in the
        distinguished one to get the most significant one. */
-    int j, i=-1;
+    int j, i = -1;
 
     /* The following is done because of a bug in 0.9.6b */
 
@@ -1248,14 +1453,14 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert)
 
     X509_NAME *name = X509_get_subject_name(server_cert);
     if(name)
-      while((j = X509_NAME_get_index_by_NID(name, NID_commonName, i))>=0)
-        i=j;
+      while((j = X509_NAME_get_index_by_NID(name, NID_commonName, i)) >= 0)
+        i = j;
 
     /* we have the name entry and we will now convert this to a string
        that we can use for comparison. Doing this we support BMPstring,
        UTF8 etc. */
 
-    if(i>=0) {
+    if(i >= 0) {
       ASN1_STRING *tmp =
         X509_NAME_ENTRY_get_data(X509_NAME_get_entry(name, i));
 
@@ -1268,7 +1473,7 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert)
         if(ASN1_STRING_type(tmp) == V_ASN1_UTF8STRING) {
           j = ASN1_STRING_length(tmp);
           if(j >= 0) {
-            peer_CN = OPENSSL_malloc(j+1);
+            peer_CN = OPENSSL_malloc(j + 1);
             if(peer_CN) {
               memcpy(peer_CN, ASN1_STRING_get0_data(tmp), j);
               peer_CN[j] = '\0';
@@ -1291,7 +1496,8 @@ static CURLcode verifyhost(struct connectdata *conn, X509 *server_cert)
        peer_CN = NULL;
     else {
       /* convert peer_CN from UTF8 */
-      CURLcode rc = Curl_convert_from_utf8(data, peer_CN, strlen(peer_CN));
+      CURLcode rc = Curl_convert_from_utf8(data, (char *)peer_CN,
+                                           strlen((char *)peer_CN));
       /* Curl_convert_from_utf8 calls failf if unsuccessful */
       if(rc) {
         OPENSSL_free(peer_CN);
@@ -1337,7 +1543,7 @@ static CURLcode verifystatus(struct connectdata *conn,
   X509_STORE     *st = NULL;
   STACK_OF(X509) *ch = NULL;
 
-  long len = SSL_get_tlsext_status_ocsp_resp(connssl->handle, &p);
+  long len = SSL_get_tlsext_status_ocsp_resp(BACKEND->handle, &p);
 
   if(!p) {
     failf(data, "No OCSP response received");
@@ -1367,8 +1573,8 @@ static CURLcode verifystatus(struct connectdata *conn,
     goto end;
   }
 
-  ch = SSL_get_peer_cert_chain(connssl->handle);
-  st = SSL_CTX_get_cert_store(connssl->ctx);
+  ch = SSL_get_peer_cert_chain(BACKEND->handle);
+  st = SSL_CTX_get_cert_store(BACKEND->ctx);
 
 #if ((OPENSSL_VERSION_NUMBER <= 0x1000201fL) /* Fixed after 1.0.2a */ || \
      (defined(LIBRESSL_VERSION_NUMBER) &&                               \
@@ -1759,7 +1965,7 @@ set_ssl_version_min_max(long *ctx_options, struct connectdata *conn,
 #ifdef TLS1_3_VERSION
     {
       struct ssl_connect_data *connssl = &conn->ssl[sockindex];
-      SSL_CTX_set_max_proto_version(connssl->ctx, TLS1_3_VERSION);
+      SSL_CTX_set_max_proto_version(BACKEND->ctx, TLS1_3_VERSION);
       *ctx_options |= SSL_OP_NO_TLSv1_2;
     }
 #else
@@ -1767,6 +1973,7 @@ set_ssl_version_min_max(long *ctx_options, struct connectdata *conn,
       failf(data, OSSL_PACKAGE " was built without TLS 1.3 support");
       return CURLE_NOT_BUILT_IN;
 #endif
+      /* FALLTHROUGH */
     case CURL_SSLVERSION_TLSv1_2:
 #if OPENSSL_VERSION_NUMBER >= 0x1000100FL
       *ctx_options |= SSL_OP_NO_TLSv1_1;
@@ -1909,25 +2116,25 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  if(connssl->ctx)
-    SSL_CTX_free(connssl->ctx);
-  connssl->ctx = SSL_CTX_new(req_method);
+  if(BACKEND->ctx)
+    SSL_CTX_free(BACKEND->ctx);
+  BACKEND->ctx = SSL_CTX_new(req_method);
 
-  if(!connssl->ctx) {
+  if(!BACKEND->ctx) {
     failf(data, "SSL: couldn't create a context: %s",
           ossl_strerror(ERR_peek_error(), error_buffer, sizeof(error_buffer)));
     return CURLE_OUT_OF_MEMORY;
   }
 
 #ifdef SSL_MODE_RELEASE_BUFFERS
-  SSL_CTX_set_mode(connssl->ctx, SSL_MODE_RELEASE_BUFFERS);
+  SSL_CTX_set_mode(BACKEND->ctx, SSL_MODE_RELEASE_BUFFERS);
 #endif
 
 #ifdef SSL_CTRL_SET_MSG_CALLBACK
   if(data->set.fdebug && data->set.verbose) {
     /* the SSL trace callback is only used for verbose logging */
-    SSL_CTX_set_msg_callback(connssl->ctx, ssl_tls_trace);
-    SSL_CTX_set_msg_callback_arg(connssl->ctx, conn);
+    SSL_CTX_set_msg_callback(BACKEND->ctx, ssl_tls_trace);
+    SSL_CTX_set_msg_callback_arg(BACKEND->ctx, conn);
   }
 #endif
 
@@ -2044,11 +2251,11 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  SSL_CTX_set_options(connssl->ctx, ctx_options);
+  SSL_CTX_set_options(BACKEND->ctx, ctx_options);
 
 #ifdef HAS_NPN
   if(conn->bits.tls_enable_npn)
-    SSL_CTX_set_next_proto_select_cb(connssl->ctx, select_next_proto_cb, conn);
+    SSL_CTX_set_next_proto_select_cb(BACKEND->ctx, select_next_proto_cb, conn);
 #endif
 
 #ifdef HAS_ALPN
@@ -2057,7 +2264,8 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     unsigned char protocols[128];
 
 #ifdef USE_NGHTTP2
-    if(data->set.httpversion >= CURL_HTTP_VERSION_2) {
+    if(data->set.httpversion >= CURL_HTTP_VERSION_2 &&
+       (!SSL_IS_PROXY() || !conn->bits.tunnel_proxy)) {
       protocols[cur++] = NGHTTP2_PROTO_VERSION_ID_LEN;
 
       memcpy(&protocols[cur], NGHTTP2_PROTO_VERSION_ID,
@@ -2075,12 +2283,12 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     /* expects length prefixed preference ordered list of protocols in wire
      * format
      */
-    SSL_CTX_set_alpn_protos(connssl->ctx, protocols, cur);
+    SSL_CTX_set_alpn_protos(BACKEND->ctx, protocols, cur);
   }
 #endif
 
   if(ssl_cert || ssl_cert_type) {
-    if(!cert_stuff(conn, connssl->ctx, ssl_cert, ssl_cert_type,
+    if(!cert_stuff(conn, BACKEND->ctx, ssl_cert, ssl_cert_type,
                    SSL_SET_OPTION(key), SSL_SET_OPTION(key_type),
                    SSL_SET_OPTION(key_passwd))) {
       /* failf() is already done in cert_stuff() */
@@ -2091,11 +2299,13 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   ciphers = SSL_CONN_CONFIG(cipher_list);
   if(!ciphers)
     ciphers = (char *)DEFAULT_CIPHER_SELECTION;
-  if(!SSL_CTX_set_cipher_list(connssl->ctx, ciphers)) {
-    failf(data, "failed setting cipher list: %s", ciphers);
-    return CURLE_SSL_CIPHER;
+  if(ciphers) {
+    if(!SSL_CTX_set_cipher_list(BACKEND->ctx, ciphers)) {
+      failf(data, "failed setting cipher list: %s", ciphers);
+      return CURLE_SSL_CIPHER;
+    }
+    infof(data, "Cipher selection: %s\n", ciphers);
   }
-  infof(data, "Cipher selection: %s\n", ciphers);
 
 #ifdef USE_TLS_SRP
   if(ssl_authtype == CURL_TLSAUTH_SRP) {
@@ -2103,18 +2313,18 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
 
     infof(data, "Using TLS-SRP username: %s\n", ssl_username);
 
-    if(!SSL_CTX_set_srp_username(connssl->ctx, ssl_username)) {
+    if(!SSL_CTX_set_srp_username(BACKEND->ctx, ssl_username)) {
       failf(data, "Unable to set SRP user name");
       return CURLE_BAD_FUNCTION_ARGUMENT;
     }
-    if(!SSL_CTX_set_srp_password(connssl->ctx, SSL_SET_OPTION(password))) {
+    if(!SSL_CTX_set_srp_password(BACKEND->ctx, SSL_SET_OPTION(password))) {
       failf(data, "failed setting SRP password");
       return CURLE_BAD_FUNCTION_ARGUMENT;
     }
     if(!SSL_CONN_CONFIG(cipher_list)) {
       infof(data, "Setting cipher list SRP\n");
 
-      if(!SSL_CTX_set_cipher_list(connssl->ctx, "SRP")) {
+      if(!SSL_CTX_set_cipher_list(BACKEND->ctx, "SRP")) {
         failf(data, "failed setting SRP cipher list");
         return CURLE_SSL_CIPHER;
       }
@@ -2125,7 +2335,7 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   if(ssl_cafile || ssl_capath) {
     /* tell SSL where to find CA certificates that are used to verify
        the servers certificate. */
-    if(!SSL_CTX_load_verify_locations(connssl->ctx, ssl_cafile, ssl_capath)) {
+    if(!SSL_CTX_load_verify_locations(BACKEND->ctx, ssl_cafile, ssl_capath)) {
       if(verifypeer) {
         /* Fail if we insist on successfully verifying the server. */
         failf(data, "error setting certificate verify locations:\n"
@@ -2153,14 +2363,14 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   else if(verifypeer) {
     /* verfying the peer without any CA certificates won't
        work so use openssl's built in default as fallback */
-    SSL_CTX_set_default_verify_paths(connssl->ctx);
+    SSL_CTX_set_default_verify_paths(BACKEND->ctx);
   }
 #endif
 
   if(ssl_crlfile) {
     /* tell SSL where to find CRL file that is used to check certificate
      * revocation */
-    lookup=X509_STORE_add_lookup(SSL_CTX_get_cert_store(connssl->ctx),
+    lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(BACKEND->ctx),
                                  X509_LOOKUP_file());
     if(!lookup ||
        (!X509_load_crl_file(lookup, ssl_crlfile, X509_FILETYPE_PEM)) ) {
@@ -2169,7 +2379,7 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     }
     /* Everything is fine. */
     infof(data, "successfully load CRL file:\n");
-    X509_STORE_set_flags(SSL_CTX_get_cert_store(connssl->ctx),
+    X509_STORE_set_flags(SSL_CTX_get_cert_store(BACKEND->ctx),
                          X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL);
 
     infof(data, "  CRLfile: %s\n", ssl_crlfile);
@@ -2184,7 +2394,7 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   */
 #if defined(X509_V_FLAG_TRUSTED_FIRST) && !defined(X509_V_FLAG_NO_ALT_CHAINS)
   if(verifypeer) {
-    X509_STORE_set_flags(SSL_CTX_get_cert_store(connssl->ctx),
+    X509_STORE_set_flags(SSL_CTX_get_cert_store(BACKEND->ctx),
                          X509_V_FLAG_TRUSTED_FIRST);
   }
 #endif
@@ -2193,12 +2403,19 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
    * fail to connect if the verification fails, or if it should continue
    * anyway. In the latter case the result of the verification is checked with
    * SSL_get_verify_result() below. */
-  SSL_CTX_set_verify(connssl->ctx,
+  SSL_CTX_set_verify(BACKEND->ctx,
                      verifypeer ? SSL_VERIFY_PEER : SSL_VERIFY_NONE, NULL);
 
+  /* Enable logging of secrets to the file specified in env SSLKEYLOGFILE. */
+#if defined(ENABLE_SSLKEYLOGFILE) && defined(HAVE_KEYLOG_CALLBACK)
+  if(keylog_file) {
+    SSL_CTX_set_keylog_callback(connssl->ctx, ossl_keylog_callback);
+  }
+#endif
+
   /* give application a chance to interfere with SSL set up. */
   if(data->set.ssl.fsslctx) {
-    result = (*data->set.ssl.fsslctx)(data, connssl->ctx,
+    result = (*data->set.ssl.fsslctx)(data, BACKEND->ctx,
                                       data->set.ssl.fsslctxp);
     if(result) {
       failf(data, "error signaled by ssl ctx callback");
@@ -2207,10 +2424,10 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
   }
 
   /* Lets make an SSL structure */
-  if(connssl->handle)
-    SSL_free(connssl->handle);
-  connssl->handle = SSL_new(connssl->ctx);
-  if(!connssl->handle) {
+  if(BACKEND->handle)
+    SSL_free(BACKEND->handle);
+  BACKEND->handle = SSL_new(BACKEND->ctx);
+  if(!BACKEND->handle) {
     failf(data, "SSL: couldn't create a context (handle)!");
     return CURLE_OUT_OF_MEMORY;
   }
@@ -2218,19 +2435,19 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
 #if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
     !defined(OPENSSL_NO_OCSP)
   if(SSL_CONN_CONFIG(verifystatus))
-    SSL_set_tlsext_status_type(connssl->handle, TLSEXT_STATUSTYPE_ocsp);
+    SSL_set_tlsext_status_type(BACKEND->handle, TLSEXT_STATUSTYPE_ocsp);
 #endif
 
-  SSL_set_connect_state(connssl->handle);
+  SSL_set_connect_state(BACKEND->handle);
 
-  connssl->server_cert = 0x0;
+  BACKEND->server_cert = 0x0;
 #ifdef SSL_CTRL_SET_TLSEXT_HOSTNAME
   if((0 == Curl_inet_pton(AF_INET, hostname, &addr)) &&
 #ifdef ENABLE_IPV6
      (0 == Curl_inet_pton(AF_INET6, hostname, &addr)) &&
 #endif
      sni &&
-     !SSL_set_tlsext_host_name(connssl->handle, hostname))
+     !SSL_set_tlsext_host_name(BACKEND->handle, hostname))
     infof(data, "WARNING: failed to configure server name indication (SNI) "
           "TLS extension\n");
 #endif
@@ -2242,7 +2459,7 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, &ssl_sessionid, NULL, sockindex)) {
       /* we got a session id, use it! */
-      if(!SSL_set_session(connssl->handle, ssl_sessionid)) {
+      if(!SSL_set_session(BACKEND->handle, ssl_sessionid)) {
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "SSL: SSL_set_session failed: %s",
               ossl_strerror(ERR_get_error(), error_buffer,
@@ -2257,13 +2474,14 @@ static CURLcode ossl_connect_step1(struct connectdata *conn, int sockindex)
 
   if(conn->proxy_ssl[sockindex].use) {
     BIO *const bio = BIO_new(BIO_f_ssl());
+    SSL *handle = conn->proxy_ssl[sockindex].backend->handle;
     DEBUGASSERT(ssl_connection_complete == conn->proxy_ssl[sockindex].state);
-    DEBUGASSERT(conn->proxy_ssl[sockindex].handle != NULL);
+    DEBUGASSERT(handle != NULL);
     DEBUGASSERT(bio != NULL);
-    BIO_set_ssl(bio, conn->proxy_ssl[sockindex].handle, FALSE);
-    SSL_set_bio(connssl->handle, bio, bio);
+    BIO_set_ssl(bio, handle, FALSE);
+    SSL_set_bio(BACKEND->handle, bio, bio);
   }
-  else if(!SSL_set_fd(connssl->handle, (int)sockfd)) {
+  else if(!SSL_set_fd(BACKEND->handle, (int)sockfd)) {
     /* pass the raw socket into the SSL layers */
     failf(data, "SSL: SSL_set_fd failed: %s",
           ossl_strerror(ERR_get_error(), error_buffer, sizeof(error_buffer)));
@@ -2288,13 +2506,18 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
 
   ERR_clear_error();
 
-  err = SSL_connect(connssl->handle);
+  err = SSL_connect(BACKEND->handle);
+  /* If keylogging is enabled but the keylog callback is not supported then log
+     secrets here, immediately after SSL_connect by using tap_ssl_key. */
+#if defined(ENABLE_SSLKEYLOGFILE) && !defined(HAVE_KEYLOG_CALLBACK)
+  tap_ssl_key(BACKEND->handle, &BACKEND->tap_state);
+#endif
 
   /* 1  is fine
      0  is "not successful but was shut down controlled"
      <0 is "handshake was not successful, because a fatal error occurred" */
   if(1 != err) {
-    int detail = SSL_get_error(connssl->handle, err);
+    int detail = SSL_get_error(BACKEND->handle, err);
 
     if(SSL_ERROR_WANT_READ == detail) {
       connssl->connecting_state = ssl_connect_2_reading;
@@ -2328,7 +2551,7 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
          (reason == SSL_R_CERTIFICATE_VERIFY_FAILED)) {
         result = CURLE_SSL_CACERT;
 
-        lerr = SSL_get_verify_result(connssl->handle);
+        lerr = SSL_get_verify_result(BACKEND->handle);
         if(lerr != X509_V_OK) {
           *certverifyresult = lerr;
           snprintf(error_buffer, sizeof(error_buffer),
@@ -2372,8 +2595,8 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
 
     /* Informational message */
     infof(data, "SSL connection using %s / %s\n",
-          get_ssl_version_txt(connssl->handle),
-          SSL_get_cipher(connssl->handle));
+          get_ssl_version_txt(BACKEND->handle),
+          SSL_get_cipher(BACKEND->handle));
 
 #ifdef HAS_ALPN
     /* Sets data and len to negotiated protocol, len is 0 if no protocol was
@@ -2382,7 +2605,7 @@ static CURLcode ossl_connect_step2(struct connectdata *conn, int sockindex)
     if(conn->bits.tls_enable_alpn) {
       const unsigned char *neg_protocol;
       unsigned int len;
-      SSL_get0_alpn_selected(connssl->handle, &neg_protocol, &len);
+      SSL_get0_alpn_selected(BACKEND->handle, &neg_protocol, &len);
       if(len != 0) {
         infof(data, "ALPN, server accepted to use %.*s\n", len, neg_protocol);
 
@@ -2427,7 +2650,7 @@ static int asn1_object_dump(ASN1_OBJECT *a, char *buf, size_t len)
 do {                              \
   long info_len = BIO_get_mem_data(mem, &ptr); \
   Curl_ssl_push_certinfo_len(data, _num, _label, ptr, info_len); \
-  if(1!=BIO_reset(mem))                                          \
+  if(1 != BIO_reset(mem))                                        \
     break;                                                       \
 } WHILE_FALSE
 
@@ -2475,12 +2698,12 @@ static int X509V3_ext(struct Curl_easy *data,
     /* no extensions, bail out */
     return 1;
 
-  for(i=0; i < (int)sk_X509_EXTENSION_num(exts); i++) {
+  for(i = 0; i < (int)sk_X509_EXTENSION_num(exts); i++) {
     ASN1_OBJECT *obj;
     X509_EXTENSION *ext = sk_X509_EXTENSION_value(exts, i);
     BUF_MEM *biomem;
     char buf[512];
-    char *ptr=buf;
+    char *ptr = buf;
     char namebuf[128];
     BIO *bio_out = BIO_new(BIO_s_mem());
 
@@ -2497,16 +2720,16 @@ static int X509V3_ext(struct Curl_easy *data,
     BIO_get_mem_ptr(bio_out, &biomem);
 
     for(j = 0; j < (size_t)biomem->length; j++) {
-      const char *sep="";
+      const char *sep = "";
       if(biomem->data[j] == '\n') {
-        sep=", ";
+        sep = ", ";
         j++; /* skip the newline */
       };
       while((j<(size_t)biomem->length) && (biomem->data[j] == ' '))
         j++;
       if(j<(size_t)biomem->length)
-        ptr+=snprintf(ptr, sizeof(buf)-(ptr-buf), "%s%c", sep,
-                      biomem->data[j]);
+        ptr += snprintf(ptr, sizeof(buf)-(ptr-buf), "%s%c", sep,
+                        biomem->data[j]);
     }
 
     Curl_ssl_push_certinfo(data, certnum, namebuf, buf);
@@ -2528,7 +2751,7 @@ static CURLcode get_cert_chain(struct connectdata *conn,
   int numcerts;
   BIO *mem;
 
-  sk = SSL_get_peer_cert_chain(connssl->handle);
+  sk = SSL_get_peer_cert_chain(BACKEND->handle);
   if(!sk) {
     return CURLE_OUT_OF_MEMORY;
   }
@@ -2545,10 +2768,10 @@ static CURLcode get_cert_chain(struct connectdata *conn,
   for(i = 0; i < numcerts; i++) {
     ASN1_INTEGER *num;
     X509 *x = sk_X509_value(sk, i);
-    EVP_PKEY *pubkey=NULL;
+    EVP_PKEY *pubkey = NULL;
     int j;
     char *ptr;
-    CONST_ASN1_BIT_STRING ASN1_BIT_STRING *psig = NULL;
+    const ASN1_BIT_STRING *psig = NULL;
 
     X509_NAME_print_ex(mem, X509_get_subject_name(x), 0, XN_FLAG_ONELINE);
     push_certinfo("Subject", i);
@@ -2818,8 +3041,8 @@ static CURLcode servercert(struct connectdata *conn,
     /* we've been asked to gather certificate info! */
     (void)get_cert_chain(conn, connssl);
 
-  connssl->server_cert = SSL_get_peer_certificate(connssl->handle);
-  if(!connssl->server_cert) {
+  BACKEND->server_cert = SSL_get_peer_certificate(BACKEND->handle);
+  if(!BACKEND->server_cert) {
     BIO_free(mem);
     if(!strict)
       return CURLE_OK;
@@ -2830,16 +3053,16 @@ static CURLcode servercert(struct connectdata *conn,
 
   infof(data, "%s certificate:\n", SSL_IS_PROXY() ? "Proxy" : "Server");
 
-  rc = x509_name_oneline(X509_get_subject_name(connssl->server_cert),
+  rc = x509_name_oneline(X509_get_subject_name(BACKEND->server_cert),
                          buffer, sizeof(buffer));
   infof(data, " subject: %s\n", rc?"[NONE]":buffer);
 
-  ASN1_TIME_print(mem, X509_get0_notBefore(connssl->server_cert));
+  ASN1_TIME_print(mem, X509_get0_notBefore(BACKEND->server_cert));
   len = BIO_get_mem_data(mem, (char **) &ptr);
   infof(data, " start date: %.*s\n", len, ptr);
   rc = BIO_reset(mem);
 
-  ASN1_TIME_print(mem, X509_get0_notAfter(connssl->server_cert));
+  ASN1_TIME_print(mem, X509_get0_notAfter(BACKEND->server_cert));
   len = BIO_get_mem_data(mem, (char **) &ptr);
   infof(data, " expire date: %.*s\n", len, ptr);
   rc = BIO_reset(mem);
@@ -2847,15 +3070,15 @@ static CURLcode servercert(struct connectdata *conn,
   BIO_free(mem);
 
   if(SSL_CONN_CONFIG(verifyhost)) {
-    result = verifyhost(conn, connssl->server_cert);
+    result = verifyhost(conn, BACKEND->server_cert);
     if(result) {
-      X509_free(connssl->server_cert);
-      connssl->server_cert = NULL;
+      X509_free(BACKEND->server_cert);
+      BACKEND->server_cert = NULL;
       return result;
     }
   }
 
-  rc = x509_name_oneline(X509_get_issuer_name(connssl->server_cert),
+  rc = x509_name_oneline(X509_get_issuer_name(BACKEND->server_cert),
                          buffer, sizeof(buffer));
   if(rc) {
     if(strict)
@@ -2875,8 +3098,8 @@ static CURLcode servercert(struct connectdata *conn,
         if(strict)
           failf(data, "SSL: Unable to open issuer cert (%s)",
                 SSL_SET_OPTION(issuercert));
-        X509_free(connssl->server_cert);
-        connssl->server_cert = NULL;
+        X509_free(BACKEND->server_cert);
+        BACKEND->server_cert = NULL;
         return CURLE_SSL_ISSUER_ERROR;
       }
 
@@ -2885,7 +3108,7 @@ static CURLcode servercert(struct connectdata *conn,
         if(strict)
           failf(data, "SSL: Unable to read issuer cert (%s)",
                 SSL_SET_OPTION(issuercert));
-        X509_free(connssl->server_cert);
+        X509_free(BACKEND->server_cert);
         X509_free(issuer);
         fclose(fp);
         return CURLE_SSL_ISSUER_ERROR;
@@ -2893,13 +3116,13 @@ static CURLcode servercert(struct connectdata *conn,
 
       fclose(fp);
 
-      if(X509_check_issued(issuer, connssl->server_cert) != X509_V_OK) {
+      if(X509_check_issued(issuer, BACKEND->server_cert) != X509_V_OK) {
         if(strict)
           failf(data, "SSL: Certificate issuer check failed (%s)",
                 SSL_SET_OPTION(issuercert));
-        X509_free(connssl->server_cert);
+        X509_free(BACKEND->server_cert);
         X509_free(issuer);
-        connssl->server_cert = NULL;
+        BACKEND->server_cert = NULL;
         return CURLE_SSL_ISSUER_ERROR;
       }
 
@@ -2908,7 +3131,7 @@ static CURLcode servercert(struct connectdata *conn,
       X509_free(issuer);
     }
 
-    lerr = *certverifyresult = SSL_get_verify_result(connssl->handle);
+    lerr = *certverifyresult = SSL_get_verify_result(BACKEND->handle);
 
     if(*certverifyresult != X509_V_OK) {
       if(SSL_CONN_CONFIG(verifypeer)) {
@@ -2933,8 +3156,8 @@ static CURLcode servercert(struct connectdata *conn,
   if(SSL_CONN_CONFIG(verifystatus)) {
     result = verifystatus(conn, connssl);
     if(result) {
-      X509_free(connssl->server_cert);
-      connssl->server_cert = NULL;
+      X509_free(BACKEND->server_cert);
+      BACKEND->server_cert = NULL;
       return result;
     }
   }
@@ -2947,13 +3170,13 @@ static CURLcode servercert(struct connectdata *conn,
   ptr = SSL_IS_PROXY() ? data->set.str[STRING_SSL_PINNEDPUBLICKEY_PROXY] :
                          data->set.str[STRING_SSL_PINNEDPUBLICKEY_ORIG];
   if(!result && ptr) {
-    result = pkp_pin_peer_pubkey(data, connssl->server_cert, ptr);
+    result = pkp_pin_peer_pubkey(data, BACKEND->server_cert, ptr);
     if(result)
       failf(data, "SSL: public key does not match pinned public key!");
   }
 
-  X509_free(connssl->server_cert);
-  connssl->server_cert = NULL;
+  X509_free(BACKEND->server_cert);
+  BACKEND->server_cert = NULL;
   connssl->connecting_state = ssl_connect_done;
 
   return result;
@@ -2972,7 +3195,7 @@ static CURLcode ossl_connect_step3(struct connectdata *conn, int sockindex)
     SSL_SESSION *our_ssl_sessionid;
     void *old_ssl_sessionid = NULL;
 
-    our_ssl_sessionid = SSL_get1_session(connssl->handle);
+    our_ssl_sessionid = SSL_get1_session(BACKEND->handle);
 
     /* SSL_get1_session() will increment the reference count and the session
         will stay in memory until explicitly freed with SSL_SESSION_free(3),
@@ -3077,9 +3300,9 @@ static CURLcode ossl_connect_common(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading ||
        connssl->connecting_state == ssl_connect_2_writing) {
 
-      curl_socket_t writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      curl_socket_t readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
@@ -3137,14 +3360,14 @@ static CURLcode ossl_connect_common(struct connectdata *conn,
   return CURLE_OK;
 }
 
-CURLcode Curl_ossl_connect_nonblocking(struct connectdata *conn,
-                                       int sockindex,
-                                       bool *done)
+static CURLcode Curl_ossl_connect_nonblocking(struct connectdata *conn,
+                                              int sockindex,
+                                              bool *done)
 {
   return ossl_connect_common(conn, sockindex, TRUE, done);
 }
 
-CURLcode Curl_ossl_connect(struct connectdata *conn, int sockindex)
+static CURLcode Curl_ossl_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -3158,17 +3381,22 @@ CURLcode Curl_ossl_connect(struct connectdata *conn, int sockindex)
   return CURLE_OK;
 }
 
-bool Curl_ossl_data_pending(const struct connectdata *conn, int connindex)
+static bool Curl_ossl_data_pending(const struct connectdata *conn,
+                                   int connindex)
 {
-  if(conn->ssl[connindex].handle)
+  const struct ssl_connect_data *connssl = &conn->ssl[connindex];
+  const struct ssl_connect_data *proxyssl = &conn->proxy_ssl[connindex];
+  if(BACKEND->handle)
     /* SSL is in use */
-    return (0 != SSL_pending(conn->ssl[connindex].handle) ||
-           (conn->proxy_ssl[connindex].handle &&
-            0 != SSL_pending(conn->proxy_ssl[connindex].handle))) ?
+    return (0 != SSL_pending(BACKEND->handle) ||
+           (proxyssl->backend->handle &&
+            0 != SSL_pending(proxyssl->backend->handle))) ?
            TRUE : FALSE;
   return FALSE;
 }
 
+static size_t Curl_ossl_version(char *buffer, size_t size);
+
 static ssize_t ossl_send(struct connectdata *conn,
                          int sockindex,
                          const void *mem,
@@ -3182,14 +3410,15 @@ static ssize_t ossl_send(struct connectdata *conn,
   unsigned long sslerror;
   int memlen;
   int rc;
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
   ERR_clear_error();
 
   memlen = (len > (size_t)INT_MAX) ? INT_MAX : (int)len;
-  rc = SSL_write(conn->ssl[sockindex].handle, mem, memlen);
+  rc = SSL_write(BACKEND->handle, mem, memlen);
 
   if(rc <= 0) {
-    err = SSL_get_error(conn->ssl[sockindex].handle, rc);
+    err = SSL_get_error(BACKEND->handle, rc);
 
     switch(err) {
     case SSL_ERROR_WANT_READ:
@@ -3243,14 +3472,15 @@ static ssize_t ossl_recv(struct connectdata *conn, /* connection data */
   unsigned long sslerror;
   ssize_t nread;
   int buffsize;
+  struct ssl_connect_data *connssl = &conn->ssl[num];
 
   ERR_clear_error();
 
   buffsize = (buffersize > (size_t)INT_MAX) ? INT_MAX : (int)buffersize;
-  nread = (ssize_t)SSL_read(conn->ssl[num].handle, buf, buffsize);
+  nread = (ssize_t)SSL_read(BACKEND->handle, buf, buffsize);
   if(nread <= 0) {
     /* failed SSL_read */
-    int err = SSL_get_error(conn->ssl[num].handle, (int)nread);
+    int err = SSL_get_error(BACKEND->handle, (int)nread);
 
     switch(err) {
     case SSL_ERROR_NONE: /* this is not an error */
@@ -3282,7 +3512,7 @@ static ssize_t ossl_recv(struct connectdata *conn, /* connection data */
   return nread;
 }
 
-size_t Curl_ossl_version(char *buffer, size_t size)
+static size_t Curl_ossl_version(char *buffer, size_t size)
 {
 #ifdef OPENSSL_IS_BORINGSSL
   return snprintf(buffer, size, OSSL_PACKAGE);
@@ -3291,9 +3521,9 @@ size_t Curl_ossl_version(char *buffer, size_t size)
   unsigned long ssleay_value;
   sub[2]='\0';
   sub[1]='\0';
-  ssleay_value=OpenSSL_version_num();
+  ssleay_value = OpenSSL_version_num();
   if(ssleay_value < 0x906000) {
-    ssleay_value=SSLEAY_VERSION_NUMBER;
+    ssleay_value = SSLEAY_VERSION_NUMBER;
     sub[0]='\0';
   }
   else {
@@ -3322,8 +3552,8 @@ size_t Curl_ossl_version(char *buffer, size_t size)
 }
 
 /* can be called with data == NULL */
-CURLcode Curl_ossl_random(struct Curl_easy *data, unsigned char *entropy,
-                          size_t length)
+static CURLcode Curl_ossl_random(struct Curl_easy *data,
+                                 unsigned char *entropy, size_t length)
 {
   int rc;
   if(data) {
@@ -3339,23 +3569,24 @@ CURLcode Curl_ossl_random(struct Curl_easy *data, unsigned char *entropy,
   return (rc == 1 ? CURLE_OK : CURLE_FAILED_INIT);
 }
 
-void Curl_ossl_md5sum(unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *md5sum /* output */,
-                      size_t unused)
+static CURLcode Curl_ossl_md5sum(unsigned char *tmp, /* input */
+                                 size_t tmplen,
+                                 unsigned char *md5sum /* output */,
+                                 size_t unused)
 {
   MD5_CTX MD5pw;
   (void)unused;
   MD5_Init(&MD5pw);
   MD5_Update(&MD5pw, tmp, tmplen);
   MD5_Final(md5sum, &MD5pw);
+  return CURLE_OK;
 }
 
 #if (OPENSSL_VERSION_NUMBER >= 0x0090800fL) && !defined(OPENSSL_NO_SHA256)
-void Curl_ossl_sha256sum(const unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *sha256sum /* output */,
-                      size_t unused)
+static void Curl_ossl_sha256sum(const unsigned char *tmp, /* input */
+                                size_t tmplen,
+                                unsigned char *sha256sum /* output */,
+                                size_t unused)
 {
   SHA256_CTX SHA256pw;
   (void)unused;
@@ -3365,7 +3596,7 @@ void Curl_ossl_sha256sum(const unsigned char *tmp, /* input */
 }
 #endif
 
-bool Curl_ossl_cert_status_request(void)
+static bool Curl_ossl_cert_status_request(void)
 {
 #if (OPENSSL_VERSION_NUMBER >= 0x0090808fL) && !defined(OPENSSL_NO_TLSEXT) && \
     !defined(OPENSSL_NO_OCSP)
@@ -3374,4 +3605,50 @@ bool Curl_ossl_cert_status_request(void)
   return FALSE;
 #endif
 }
+
+static void *Curl_ossl_get_internals(struct ssl_connect_data *connssl,
+                                     CURLINFO info)
+{
+  /* Legacy: CURLINFO_TLS_SESSION must return an SSL_CTX pointer. */
+  return info == CURLINFO_TLS_SESSION ?
+         (void *)BACKEND->ctx : (void *)BACKEND->handle;
+}
+
+const struct Curl_ssl Curl_ssl_openssl = {
+  { CURLSSLBACKEND_OPENSSL, "openssl" }, /* info */
+
+  1, /* have_ca_path */
+  1, /* have_certinfo */
+  1, /* have_pinnedpubkey */
+  1, /* have_ssl_ctx */
+  1, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_ossl_init,                /* init */
+  Curl_ossl_cleanup,             /* cleanup */
+  Curl_ossl_version,             /* version */
+  Curl_ossl_check_cxn,           /* check_cxn */
+  Curl_ossl_shutdown,            /* shutdown */
+  Curl_ossl_data_pending,        /* data_pending */
+  Curl_ossl_random,              /* random */
+  Curl_ossl_cert_status_request, /* cert_status_request */
+  Curl_ossl_connect,             /* connect */
+  Curl_ossl_connect_nonblocking, /* connect_nonblocking */
+  Curl_ossl_get_internals,       /* get_internals */
+  Curl_ossl_close,               /* close */
+  Curl_ossl_close_all,           /* close_all */
+  Curl_ossl_session_free,        /* session_free */
+  Curl_ossl_set_engine,          /* set_engine */
+  Curl_ossl_set_engine_default,  /* set_engine_default */
+  Curl_ossl_engines_list,        /* engines_list */
+  Curl_none_false_start,         /* false_start */
+  Curl_ossl_md5sum,              /* md5sum */
+#if (OPENSSL_VERSION_NUMBER >= 0x0090800fL) && !defined(OPENSSL_NO_SHA256)
+  Curl_ossl_sha256sum            /* sha256sum */
+#else
+  NULL                           /* sha256sum */
+#endif
+};
+
 #endif /* USE_OPENSSL */
diff --git a/lib/vtls/openssl.h b/lib/vtls/openssl.h
index b9648d5..114dc4b 100644
--- a/lib/vtls/openssl.h
+++ b/lib/vtls/openssl.h
@@ -31,96 +31,7 @@
 
 #include "urldata.h"
 
-CURLcode Curl_ossl_connect(struct connectdata *conn, int sockindex);
-CURLcode Curl_ossl_connect_nonblocking(struct connectdata *conn,
-                                       int sockindex,
-                                       bool *done);
-
-/* close a SSL connection */
-void Curl_ossl_close(struct connectdata *conn, int sockindex);
-
-/* tell OpenSSL to close down all open information regarding connections (and
-   thus session ID caching etc) */
-void Curl_ossl_close_all(struct Curl_easy *data);
-
-/* Sets an OpenSSL engine */
-CURLcode Curl_ossl_set_engine(struct Curl_easy *data, const char *engine);
-
-/* function provided for the generic SSL-layer, called when a session id
-   should be freed */
-void Curl_ossl_session_free(void *ptr);
-
-/* Sets engine as default for all SSL operations */
-CURLcode Curl_ossl_set_engine_default(struct Curl_easy *data);
-
-/* Build list of OpenSSL engines */
-struct curl_slist *Curl_ossl_engines_list(struct Curl_easy *data);
-
-int Curl_ossl_init(void);
-void Curl_ossl_cleanup(void);
-
-size_t Curl_ossl_version(char *buffer, size_t size);
-int Curl_ossl_check_cxn(struct connectdata *cxn);
-int Curl_ossl_shutdown(struct connectdata *conn, int sockindex);
-bool Curl_ossl_data_pending(const struct connectdata *conn,
-                            int connindex);
-
-/* return 0 if a find random is filled in */
-CURLcode Curl_ossl_random(struct Curl_easy *data, unsigned char *entropy,
-                          size_t length);
-void Curl_ossl_md5sum(unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *md5sum /* output */,
-                      size_t unused);
-void Curl_ossl_sha256sum(const unsigned char *tmp, /* input */
-                      size_t tmplen,
-                      unsigned char *sha256sum /* output */,
-                      size_t unused);
-
-bool Curl_ossl_cert_status_request(void);
-
-/* Support HTTPS-proxy */
-#define HTTPS_PROXY_SUPPORT 1
-
-/* Set the API backend definition to OpenSSL */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_OPENSSL
-
-/* this backend supports the CAPATH option */
-#define have_curlssl_ca_path 1
-
-/* this backend supports CURLOPT_CERTINFO */
-#define have_curlssl_certinfo 1
-
-/* this backend supports CURLOPT_SSL_CTX_* */
-#define have_curlssl_ssl_ctx 1
-
-/* this backend supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-
-/* API setup for OpenSSL */
-#define curlssl_init Curl_ossl_init
-#define curlssl_cleanup Curl_ossl_cleanup
-#define curlssl_connect Curl_ossl_connect
-#define curlssl_connect_nonblocking Curl_ossl_connect_nonblocking
-#define curlssl_session_free(x) Curl_ossl_session_free(x)
-#define curlssl_close_all Curl_ossl_close_all
-#define curlssl_close Curl_ossl_close
-#define curlssl_shutdown(x,y) Curl_ossl_shutdown(x,y)
-#define curlssl_set_engine(x,y) Curl_ossl_set_engine(x,y)
-#define curlssl_set_engine_default(x) Curl_ossl_set_engine_default(x)
-#define curlssl_engines_list(x) Curl_ossl_engines_list(x)
-#define curlssl_version Curl_ossl_version
-#define curlssl_check_cxn Curl_ossl_check_cxn
-#define curlssl_data_pending(x,y) Curl_ossl_data_pending(x,y)
-#define curlssl_random(x,y,z) Curl_ossl_random(x,y,z)
-#define curlssl_md5sum(a,b,c,d) Curl_ossl_md5sum(a,b,c,d)
-#if (OPENSSL_VERSION_NUMBER >= 0x0090800fL) && !defined(OPENSSL_NO_SHA256)
-#define curlssl_sha256sum(a,b,c,d) Curl_ossl_sha256sum(a,b,c,d)
-#endif
-#define curlssl_cert_status_request() Curl_ossl_cert_status_request()
-
-#define DEFAULT_CIPHER_SELECTION \
-  "ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH"
+extern const struct Curl_ssl Curl_ssl_openssl;
 
 #endif /* USE_OPENSSL */
 #endif /* HEADER_CURL_SSLUSE_H */
diff --git a/lib/vtls/polarssl.c b/lib/vtls/polarssl.c
index 669091c..fc0644f 100644
--- a/lib/vtls/polarssl.c
+++ b/lib/vtls/polarssl.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2012 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2012 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  * Copyright (C) 2010 - 2011, Hoi-Ho Chan, <hoiho.chan at gmail.com>
  *
  * This software is licensed as described in the file COPYING, which
@@ -30,7 +30,6 @@
 #include "curl_setup.h"
 
 #ifdef USE_POLARSSL
-
 #include <polarssl/net.h>
 #include <polarssl/ssl.h>
 #include <polarssl/certs.h>
@@ -70,6 +69,19 @@
 #define PUB_DER_MAX_BYTES   (RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
                              RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES)
 
+struct ssl_backend_data {
+  ctr_drbg_context ctr_drbg;
+  entropy_context entropy;
+  ssl_context ssl;
+  int server_fd;
+  x509_crt cacert;
+  x509_crt clicert;
+  x509_crl crl;
+  rsa_context rsa;
+};
+
+#define BACKEND connssl->backend
+
 /* apply threading? */
 #if defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
 #define THREADING_SUPPORT
@@ -197,8 +209,8 @@ set_ssl_version_min_max(struct connectdata *conn, int sockindex)
     return result;
   }
 
-  ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3, ssl_min_ver);
-  ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3, ssl_max_ver);
+  ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3, ssl_min_ver);
+  ssl_set_max_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3, ssl_max_ver);
 
   return result;
 }
@@ -215,7 +227,7 @@ polarssl_connect_step1(struct connectdata *conn,
   const long int port = SSL_IS_PROXY() ? conn->port : conn->remote_port;
   int ret = -1;
   char errorbuf[128];
-  errorbuf[0]=0;
+  errorbuf[0] = 0;
 
   /* PolarSSL only supports SSLv3 and TLSv1 */
   if(SSL_CONN_CONFIG(version) == CURL_SSLVERSION_SSLv2) {
@@ -226,16 +238,16 @@ polarssl_connect_step1(struct connectdata *conn,
 #ifdef THREADING_SUPPORT
   entropy_init_mutex(&entropy);
 
-  if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func_mutex, &entropy,
+  if((ret = ctr_drbg_init(&BACKEND->ctr_drbg, entropy_func_mutex, &entropy,
                           NULL, 0)) != 0) {
     error_strerror(ret, errorbuf, sizeof(errorbuf));
     failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
           -ret, errorbuf);
   }
 #else
-  entropy_init(&connssl->entropy);
+  entropy_init(&BACKEND->entropy);
 
-  if((ret = ctr_drbg_init(&connssl->ctr_drbg, entropy_func, &connssl->entropy,
+  if((ret = ctr_drbg_init(&BACKEND->ctr_drbg, entropy_func, &BACKEND->entropy,
                           NULL, 0)) != 0) {
     error_strerror(ret, errorbuf, sizeof(errorbuf));
     failf(data, "Failed - PolarSSL: ctr_drbg_init returned (-0x%04X) %s\n",
@@ -244,10 +256,10 @@ polarssl_connect_step1(struct connectdata *conn,
 #endif /* THREADING_SUPPORT */
 
   /* Load the trusted CA */
-  memset(&connssl->cacert, 0, sizeof(x509_crt));
+  memset(&BACKEND->cacert, 0, sizeof(x509_crt));
 
   if(SSL_CONN_CONFIG(CAfile)) {
-    ret = x509_crt_parse_file(&connssl->cacert,
+    ret = x509_crt_parse_file(&BACKEND->cacert,
                               SSL_CONN_CONFIG(CAfile));
 
     if(ret<0) {
@@ -261,7 +273,7 @@ polarssl_connect_step1(struct connectdata *conn,
   }
 
   if(capath) {
-    ret = x509_crt_parse_path(&connssl->cacert, capath);
+    ret = x509_crt_parse_path(&BACKEND->cacert, capath);
 
     if(ret<0) {
       error_strerror(ret, errorbuf, sizeof(errorbuf));
@@ -274,10 +286,10 @@ polarssl_connect_step1(struct connectdata *conn,
   }
 
   /* Load the client certificate */
-  memset(&connssl->clicert, 0, sizeof(x509_crt));
+  memset(&BACKEND->clicert, 0, sizeof(x509_crt));
 
   if(SSL_SET_OPTION(cert)) {
-    ret = x509_crt_parse_file(&connssl->clicert,
+    ret = x509_crt_parse_file(&BACKEND->clicert,
                               SSL_SET_OPTION(cert));
 
     if(ret) {
@@ -298,9 +310,9 @@ polarssl_connect_step1(struct connectdata *conn,
     if(ret == 0 && !pk_can_do(&pk, POLARSSL_PK_RSA))
       ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
     if(ret == 0)
-      rsa_copy(&connssl->rsa, pk_rsa(pk));
+      rsa_copy(&BACKEND->rsa, pk_rsa(pk));
     else
-      rsa_free(&connssl->rsa);
+      rsa_free(&BACKEND->rsa);
     pk_free(&pk);
 
     if(ret) {
@@ -313,10 +325,10 @@ polarssl_connect_step1(struct connectdata *conn,
   }
 
   /* Load the CRL */
-  memset(&connssl->crl, 0, sizeof(x509_crl));
+  memset(&BACKEND->crl, 0, sizeof(x509_crl));
 
   if(SSL_SET_OPTION(CRLfile)) {
-    ret = x509_crl_parse_file(&connssl->crl,
+    ret = x509_crl_parse_file(&BACKEND->crl,
                               SSL_SET_OPTION(CRLfile));
 
     if(ret) {
@@ -330,7 +342,7 @@ polarssl_connect_step1(struct connectdata *conn,
 
   infof(data, "PolarSSL: Connecting to %s:%d\n", hostname, port);
 
-  if(ssl_init(&connssl->ssl)) {
+  if(ssl_init(&BACKEND->ssl)) {
     failf(data, "PolarSSL: ssl_init failed");
     return CURLE_SSL_CONNECT_ERROR;
   }
@@ -338,13 +350,13 @@ polarssl_connect_step1(struct connectdata *conn,
   switch(SSL_CONN_CONFIG(version)) {
   case CURL_SSLVERSION_DEFAULT:
   case CURL_SSLVERSION_TLSv1:
-    ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+    ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
                         SSL_MINOR_VERSION_1);
     break;
   case CURL_SSLVERSION_SSLv3:
-    ssl_set_min_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+    ssl_set_min_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
                         SSL_MINOR_VERSION_0);
-    ssl_set_max_version(&connssl->ssl, SSL_MAJOR_VERSION_3,
+    ssl_set_max_version(&BACKEND->ssl, SSL_MAJOR_VERSION_3,
                         SSL_MINOR_VERSION_0);
     infof(data, "PolarSSL: Forced min. SSL Version to be SSLv3\n");
     break;
@@ -363,16 +375,16 @@ polarssl_connect_step1(struct connectdata *conn,
     return CURLE_SSL_CONNECT_ERROR;
   }
 
-  ssl_set_endpoint(&connssl->ssl, SSL_IS_CLIENT);
-  ssl_set_authmode(&connssl->ssl, SSL_VERIFY_OPTIONAL);
+  ssl_set_endpoint(&BACKEND->ssl, SSL_IS_CLIENT);
+  ssl_set_authmode(&BACKEND->ssl, SSL_VERIFY_OPTIONAL);
 
-  ssl_set_rng(&connssl->ssl, ctr_drbg_random,
-              &connssl->ctr_drbg);
-  ssl_set_bio(&connssl->ssl,
+  ssl_set_rng(&BACKEND->ssl, ctr_drbg_random,
+              &BACKEND->ctr_drbg);
+  ssl_set_bio(&BACKEND->ssl,
               net_recv, &conn->sock[sockindex],
               net_send, &conn->sock[sockindex]);
 
-  ssl_set_ciphersuites(&connssl->ssl, ssl_list_ciphersuites());
+  ssl_set_ciphersuites(&BACKEND->ssl, ssl_list_ciphersuites());
 
   /* Check if there's a cached ID we can/should use here! */
   if(SSL_SET_OPTION(primary.sessionid)) {
@@ -380,7 +392,7 @@ polarssl_connect_step1(struct connectdata *conn,
 
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, &old_session, NULL, sockindex)) {
-      ret = ssl_set_session(&connssl->ssl, old_session);
+      ret = ssl_set_session(&BACKEND->ssl, old_session);
       if(ret) {
         Curl_ssl_sessionid_unlock(conn);
         failf(data, "ssl_set_session returned -0x%x", -ret);
@@ -391,15 +403,15 @@ polarssl_connect_step1(struct connectdata *conn,
     Curl_ssl_sessionid_unlock(conn);
   }
 
-  ssl_set_ca_chain(&connssl->ssl,
-                   &connssl->cacert,
-                   &connssl->crl,
+  ssl_set_ca_chain(&BACKEND->ssl,
+                   &BACKEND->cacert,
+                   &BACKEND->crl,
                    hostname);
 
-  ssl_set_own_cert_rsa(&connssl->ssl,
-                       &connssl->clicert, &connssl->rsa);
+  ssl_set_own_cert_rsa(&BACKEND->ssl,
+                       &BACKEND->clicert, &BACKEND->rsa);
 
-  if(ssl_set_hostname(&connssl->ssl, hostname)) {
+  if(ssl_set_hostname(&BACKEND->ssl, hostname)) {
     /* ssl_set_hostname() sets the name to use in CN/SAN checks *and* the name
        to set in the SNI extension. So even if curl connects to a host
        specified as an IP address, this function must be used. */
@@ -424,12 +436,12 @@ polarssl_connect_step1(struct connectdata *conn,
 
     protocols[cur] = NULL;
 
-    ssl_set_alpn_protocols(&connssl->ssl, protocols);
+    ssl_set_alpn_protocols(&BACKEND->ssl, protocols);
   }
 #endif
 
 #ifdef POLARSSL_DEBUG
-  ssl_set_dbg(&connssl->ssl, polarssl_debug, data);
+  ssl_set_dbg(&BACKEND->ssl, polarssl_debug, data);
 #endif
 
   connssl->connecting_state = ssl_connect_2;
@@ -456,7 +468,7 @@ polarssl_connect_step2(struct connectdata *conn,
   conn->recv[sockindex] = polarssl_recv;
   conn->send[sockindex] = polarssl_send;
 
-  ret = ssl_handshake(&connssl->ssl);
+  ret = ssl_handshake(&BACKEND->ssl);
 
   switch(ret) {
   case 0:
@@ -478,9 +490,9 @@ polarssl_connect_step2(struct connectdata *conn,
   }
 
   infof(data, "PolarSSL: Handshake complete, cipher is %s\n",
-        ssl_get_ciphersuite(&conn->ssl[sockindex].ssl) );
+        ssl_get_ciphersuite(&BACKEND->ssl) );
 
-  ret = ssl_get_verify_result(&conn->ssl[sockindex].ssl);
+  ret = ssl_get_verify_result(&BACKEND->ssl);
 
   if(ret && SSL_CONN_CONFIG(verifypeer)) {
     if(ret & BADCERT_EXPIRED)
@@ -500,12 +512,12 @@ polarssl_connect_step2(struct connectdata *conn,
     return CURLE_PEER_FAILED_VERIFICATION;
   }
 
-  if(ssl_get_peer_cert(&(connssl->ssl))) {
+  if(ssl_get_peer_cert(&(BACKEND->ssl))) {
     /* If the session was resumed, there will be no peer certs */
     memset(buffer, 0, sizeof(buffer));
 
     if(x509_crt_info(buffer, sizeof(buffer), (char *)"* ",
-                     ssl_get_peer_cert(&(connssl->ssl))) != -1)
+                     ssl_get_peer_cert(&(BACKEND->ssl))) != -1)
       infof(data, "Dumping cert info:\n%s\n", buffer);
   }
 
@@ -517,7 +529,7 @@ polarssl_connect_step2(struct connectdata *conn,
     unsigned char pubkey[PUB_DER_MAX_BYTES];
     const x509_crt *peercert;
 
-    peercert = ssl_get_peer_cert(&connssl->ssl);
+    peercert = ssl_get_peer_cert(&BACKEND->ssl);
 
     if(!peercert || !peercert->raw.p || !peercert->raw.len) {
       failf(data, "Failed due to missing peer certificate");
@@ -566,7 +578,7 @@ polarssl_connect_step2(struct connectdata *conn,
 
 #ifdef HAS_ALPN
   if(conn->bits.tls_enable_alpn) {
-    const char *next_protocol = ssl_get_alpn_protocol(&connssl->ssl);
+    const char *next_protocol = ssl_get_alpn_protocol(&BACKEND->ssl);
 
     if(next_protocol != NULL) {
       infof(data, "ALPN, server accepted to use %s\n", next_protocol);
@@ -614,7 +626,7 @@ polarssl_connect_step3(struct connectdata *conn,
 
     memset(our_ssl_sessionid, 0, sizeof(ssl_session));
 
-    ret = ssl_get_session(&connssl->ssl, our_ssl_sessionid);
+    ret = ssl_get_session(&BACKEND->ssl, our_ssl_sessionid);
     if(ret) {
       failf(data, "ssl_get_session returned -0x%x", -ret);
       return CURLE_SSL_CONNECT_ERROR;
@@ -645,9 +657,10 @@ static ssize_t polarssl_send(struct connectdata *conn,
                              size_t len,
                              CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
   int ret = -1;
 
-  ret = ssl_write(&conn->ssl[sockindex].ssl,
+  ret = ssl_write(&BACKEND->ssl,
                   (unsigned char *)mem, len);
 
   if(ret < 0) {
@@ -659,13 +672,14 @@ static ssize_t polarssl_send(struct connectdata *conn,
   return ret;
 }
 
-void Curl_polarssl_close(struct connectdata *conn, int sockindex)
+static void Curl_polarssl_close(struct connectdata *conn, int sockindex)
 {
-  rsa_free(&conn->ssl[sockindex].rsa);
-  x509_crt_free(&conn->ssl[sockindex].clicert);
-  x509_crt_free(&conn->ssl[sockindex].cacert);
-  x509_crl_free(&conn->ssl[sockindex].crl);
-  ssl_free(&conn->ssl[sockindex].ssl);
+  struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  rsa_free(&BACKEND->rsa);
+  x509_crt_free(&BACKEND->clicert);
+  x509_crt_free(&BACKEND->cacert);
+  x509_crl_free(&BACKEND->crl);
+  ssl_free(&BACKEND->ssl);
 }
 
 static ssize_t polarssl_recv(struct connectdata *conn,
@@ -674,11 +688,12 @@ static ssize_t polarssl_recv(struct connectdata *conn,
                              size_t buffersize,
                              CURLcode *curlcode)
 {
+  struct ssl_connect_data *connssl = &conn->ssl[num];
   int ret = -1;
   ssize_t len = -1;
 
   memset(buf, 0, buffersize);
-  ret = ssl_read(&conn->ssl[num].ssl, (unsigned char *)buf, buffersize);
+  ret = ssl_read(&BACKEND->ssl, (unsigned char *)buf, buffersize);
 
   if(ret <= 0) {
     if(ret == POLARSSL_ERR_SSL_PEER_CLOSE_NOTIFY)
@@ -694,7 +709,7 @@ static ssize_t polarssl_recv(struct connectdata *conn,
   return len;
 }
 
-void Curl_polarssl_session_free(void *ptr)
+static void Curl_polarssl_session_free(void *ptr)
 {
   ssl_session_free(ptr);
   free(ptr);
@@ -703,7 +718,7 @@ void Curl_polarssl_session_free(void *ptr)
 /* 1.3.10 was the first rebranded version. All new releases (in 1.3 branch and
    higher) will be mbed TLS branded.. */
 
-size_t Curl_polarssl_version(char *buffer, size_t size)
+static size_t Curl_polarssl_version(char *buffer, size_t size)
 {
   unsigned int version = version_get_number();
   return snprintf(buffer, size, "%s/%d.%d.%d",
@@ -762,9 +777,9 @@ polarssl_connect_common(struct connectdata *conn,
     if(connssl->connecting_state == ssl_connect_2_reading ||
        connssl->connecting_state == ssl_connect_2_writing) {
 
-      curl_socket_t writefd = ssl_connect_2_writing==
+      curl_socket_t writefd = ssl_connect_2_writing ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
-      curl_socket_t readfd = ssl_connect_2_reading==
+      curl_socket_t readfd = ssl_connect_2_reading ==
         connssl->connecting_state?sockfd:CURL_SOCKET_BAD;
 
       what = Curl_socket_check(readfd, CURL_SOCKET_BAD, writefd,
@@ -825,18 +840,14 @@ polarssl_connect_common(struct connectdata *conn,
   return CURLE_OK;
 }
 
-CURLcode
-Curl_polarssl_connect_nonblocking(struct connectdata *conn,
-                                  int sockindex,
-                                  bool *done)
+static CURLcode Curl_polarssl_connect_nonblocking(struct connectdata *conn,
+                                                  int sockindex, bool *done)
 {
   return polarssl_connect_common(conn, sockindex, TRUE, done);
 }
 
 
-CURLcode
-Curl_polarssl_connect(struct connectdata *conn,
-                      int sockindex)
+static CURLcode Curl_polarssl_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -854,20 +865,73 @@ Curl_polarssl_connect(struct connectdata *conn,
  * return 0 error initializing SSL
  * return 1 SSL initialized successfully
  */
-int Curl_polarssl_init(void)
+static int Curl_polarssl_init(void)
 {
   return Curl_polarsslthreadlock_thread_setup();
 }
 
-void Curl_polarssl_cleanup(void)
+static void Curl_polarssl_cleanup(void)
 {
   (void)Curl_polarsslthreadlock_thread_cleanup();
 }
 
+static bool Curl_polarssl_data_pending(const struct connectdata *conn,
+                                       int sockindex)
+{
+  const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
+  return ssl_get_bytes_avail(&BACKEND->ssl) != 0;
+}
+
+static void Curl_polarssl_sha256sum(const unsigned char *input,
+                                    size_t inputlen,
+                                    unsigned char *sha256sum,
+                                    size_t sha256len UNUSED_PARAM)
+{
+  (void)sha256len;
+  sha256(input, inputlen, sha256sum, 0);
+}
 
-int Curl_polarssl_data_pending(const struct connectdata *conn, int sockindex)
+static void *Curl_polarssl_get_internals(struct ssl_connect_data *connssl,
+                                         CURLINFO info UNUSED_PARAM)
 {
-  return ssl_get_bytes_avail(&conn->ssl[sockindex].ssl) != 0;
+  (void)info;
+  return &BACKEND->ssl;
 }
 
+const struct Curl_ssl Curl_ssl_polarssl = {
+  { CURLSSLBACKEND_POLARSSL, "polarssl" }, /* info */
+
+  1, /* have_ca_path */
+  0, /* have_certinfo */
+  1, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_polarssl_init,                /* init */
+  Curl_polarssl_cleanup,             /* cleanup */
+  Curl_polarssl_version,             /* version */
+  Curl_none_check_cxn,               /* check_cxn */
+  Curl_none_shutdown,                /* shutdown */
+  Curl_polarssl_data_pending,        /* data_pending */
+  /* This might cause libcurl to use a weeker random!
+   * TODO: use Polarssl's CTR-DRBG or HMAC-DRBG
+  */
+  Curl_none_random,                  /* random */
+  Curl_none_cert_status_request,     /* cert_status_request */
+  Curl_polarssl_connect,             /* connect */
+  Curl_polarssl_connect_nonblocking, /* connect_nonblocking */
+  Curl_polarssl_get_internals,       /* get_internals */
+  Curl_polarssl_close,               /* close */
+  Curl_none_close_all,               /* close_all */
+  Curl_polarssl_session_free,        /* session_free */
+  Curl_none_set_engine,              /* set_engine */
+  Curl_none_set_engine_default,      /* set_engine_default */
+  Curl_none_engines_list,            /* engines_list */
+  Curl_none_false_start,             /* false_start */
+  Curl_none_md5sum,                  /* md5sum */
+  Curl_polarssl_sha256sum            /* sha256sum */
+};
+
 #endif /* USE_POLARSSL */
diff --git a/lib/vtls/polarssl.h b/lib/vtls/polarssl.h
index 47af7b4..23c3636 100644
--- a/lib/vtls/polarssl.h
+++ b/lib/vtls/polarssl.h
@@ -26,57 +26,7 @@
 
 #ifdef USE_POLARSSL
 
-#include <polarssl/sha256.h>
-
-/* Called on first use PolarSSL, setup threading if supported */
-int  Curl_polarssl_init(void);
-void Curl_polarssl_cleanup(void);
-int Curl_polarssl_data_pending(const struct connectdata *conn, int sockindex);
-
-
-CURLcode Curl_polarssl_connect(struct connectdata *conn, int sockindex);
-
-CURLcode Curl_polarssl_connect_nonblocking(struct connectdata *conn,
-                                           int sockindex,
-                                           bool *done);
-
- /* close a SSL connection */
-void Curl_polarssl_close(struct connectdata *conn, int sockindex);
-
-void Curl_polarssl_session_free(void *ptr);
-size_t Curl_polarssl_version(char *buffer, size_t size);
-int Curl_polarssl_shutdown(struct connectdata *conn, int sockindex);
-
-/* Set the API backend definition to PolarSSL */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_POLARSSL
-
-/* this backend supports the CAPATH option */
-#define have_curlssl_ca_path 1
-
-/* this backends supports CURLOPT_PINNEDPUBLICKEY */
-#define have_curlssl_pinnedpubkey 1
-
-/* API setup for PolarSSL */
-#define curlssl_init() Curl_polarssl_init()
-#define curlssl_cleanup() Curl_polarssl_cleanup()
-#define curlssl_connect Curl_polarssl_connect
-#define curlssl_connect_nonblocking Curl_polarssl_connect_nonblocking
-#define curlssl_session_free(x)  Curl_polarssl_session_free(x)
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_polarssl_close
-#define curlssl_shutdown(x,y) 0
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_polarssl_version
-#define curlssl_check_cxn(x) ((void)x, -1)
-#define curlssl_data_pending(x,y) Curl_polarssl_data_pending(x, y)
-#define curlssl_sha256sum(a,b,c,d) sha256(a,b,c,0)
-
-/* This might cause libcurl to use a weeker random!
-   TODO: implement proper use of Polarssl's CTR-DRBG or HMAC-DRBG and use that
-*/
-#define curlssl_random(x,y,z) ((void)x, (void)y, (void)z, CURLE_NOT_BUILT_IN)
+extern const struct Curl_ssl Curl_ssl_polarssl;
 
 #endif /* USE_POLARSSL */
 #endif /* HEADER_CURL_POLARSSL_H */
diff --git a/lib/vtls/polarssl_threadlock.c b/lib/vtls/polarssl_threadlock.c
index b1eb7b7..dd5fbd7 100644
--- a/lib/vtls/polarssl_threadlock.c
+++ b/lib/vtls/polarssl_threadlock.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 2013-2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 2013-2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  * Copyright (C) 2010, 2011, Hoi-Ho Chan, <hoiho.chan at gmail.com>
  *
  * This software is licensed as described in the file COPYING, which
@@ -114,7 +114,7 @@ int Curl_polarsslthreadlock_lock_function(int n)
   }
 #elif defined(HAVE_PROCESS_H)
   if(n < NUMT) {
-    ret = (WaitForSingleObject(mutex_buf[n], INFINITE)==WAIT_FAILED?1:0);
+    ret = (WaitForSingleObject(mutex_buf[n], INFINITE) == WAIT_FAILED?1:0);
     if(ret) {
       DEBUGF(fprintf(stderr,
                      "Error: polarsslthreadlock_lock_function failed\n"));
diff --git a/lib/vtls/schannel.c b/lib/vtls/schannel.c
index 9460301..9ca1431 100644
--- a/lib/vtls/schannel.c
+++ b/lib/vtls/schannel.c
@@ -46,6 +46,8 @@
 #  error "Can't compile SCHANNEL support without SSPI."
 #endif
 
+#include <schnlsp.h>
+#include <schannel.h>
 #include "curl_sspi.h"
 #include "schannel.h"
 #include "vtls.h"
@@ -74,11 +76,92 @@
 #  define HAS_ALPN 1
 #endif
 
+#ifndef UNISP_NAME_A
+#define UNISP_NAME_A "Microsoft Unified Security Protocol Provider"
+#endif
+
+#ifndef UNISP_NAME_W
+#define UNISP_NAME_W L"Microsoft Unified Security Protocol Provider"
+#endif
+
+#ifndef UNISP_NAME
+#ifdef UNICODE
+#define UNISP_NAME  UNISP_NAME_W
+#else
+#define UNISP_NAME  UNISP_NAME_A
+#endif
+#endif
+
+#ifndef SP_PROT_SSL2_CLIENT
+#define SP_PROT_SSL2_CLIENT             0x00000008
+#endif
+
+#ifndef SP_PROT_SSL3_CLIENT
+#define SP_PROT_SSL3_CLIENT             0x00000008
+#endif
+
+#ifndef SP_PROT_TLS1_CLIENT
+#define SP_PROT_TLS1_CLIENT             0x00000080
+#endif
+
+#ifndef SP_PROT_TLS1_0_CLIENT
+#define SP_PROT_TLS1_0_CLIENT           SP_PROT_TLS1_CLIENT
+#endif
+
+#ifndef SP_PROT_TLS1_1_CLIENT
+#define SP_PROT_TLS1_1_CLIENT           0x00000200
+#endif
+
+#ifndef SP_PROT_TLS1_2_CLIENT
+#define SP_PROT_TLS1_2_CLIENT           0x00000800
+#endif
+
+#ifndef SECBUFFER_ALERT
+#define SECBUFFER_ALERT                 17
+#endif
+
+/* Both schannel buffer sizes must be > 0 */
+#define CURL_SCHANNEL_BUFFER_INIT_SIZE   4096
+#define CURL_SCHANNEL_BUFFER_FREE_SIZE   1024
+
 /* Uncomment to force verbose output
  * #define infof(x, y, ...) printf(y, __VA_ARGS__)
  * #define failf(x, y, ...) printf(y, __VA_ARGS__)
  */
 
+/* Structs to store Schannel handles */
+struct curl_schannel_cred {
+  CredHandle cred_handle;
+  TimeStamp time_stamp;
+  int refcount;
+};
+
+struct curl_schannel_ctxt {
+  CtxtHandle ctxt_handle;
+  TimeStamp time_stamp;
+};
+
+struct ssl_backend_data {
+  struct curl_schannel_cred *cred;
+  struct curl_schannel_ctxt *ctxt;
+  SecPkgContext_StreamSizes stream_sizes;
+  size_t encdata_length, decdata_length;
+  size_t encdata_offset, decdata_offset;
+  unsigned char *encdata_buffer, *decdata_buffer;
+  /* encdata_is_incomplete: if encdata contains only a partial record that
+     can't be decrypted without another Curl_read_plain (that is, status is
+     SEC_E_INCOMPLETE_MESSAGE) then set this true. after Curl_read_plain writes
+     more bytes into encdata then set this back to false. */
+  bool encdata_is_incomplete;
+  unsigned long req_flags, ret_flags;
+  CURLcode recv_unrecoverable_err; /* schannel_recv had an unrecoverable err */
+  bool recv_sspi_close_notify; /* true if connection closed by close_notify */
+  bool recv_connection_closed; /* true if connection closed, regardless how */
+  bool use_alpn; /* true if ALPN is used for this connection */
+};
+
+#define BACKEND connssl->backend
+
 static Curl_recv schannel_recv;
 static Curl_send schannel_send;
 
@@ -176,33 +259,33 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
 #ifdef HAS_ALPN
   /* ALPN is only supported on Windows 8.1 / Server 2012 R2 and above.
      Also it doesn't seem to be supported for Wine, see curl bug #983. */
-  connssl->use_alpn = conn->bits.tls_enable_alpn &&
+  BACKEND->use_alpn = conn->bits.tls_enable_alpn &&
                       !GetProcAddress(GetModuleHandleA("ntdll"),
                                       "wine_get_version") &&
                       Curl_verify_windows_version(6, 3, PLATFORM_WINNT,
                                                   VERSION_GREATER_THAN_EQUAL);
 #else
-  connssl->use_alpn = false;
+  BACKEND->use_alpn = false;
 #endif
 
-  connssl->cred = NULL;
+  BACKEND->cred = NULL;
 
   /* check for an existing re-usable credential handle */
   if(SSL_SET_OPTION(primary.sessionid)) {
     Curl_ssl_sessionid_lock(conn);
     if(!Curl_ssl_getsessionid(conn, (void **)&old_cred, NULL, sockindex)) {
-      connssl->cred = old_cred;
+      BACKEND->cred = old_cred;
       infof(data, "schannel: re-using existing credential handle\n");
 
       /* increment the reference counter of the credential/session handle */
-      connssl->cred->refcount++;
+      BACKEND->cred->refcount++;
       infof(data, "schannel: incremented credential handle refcount = %d\n",
-            connssl->cred->refcount);
+            BACKEND->cred->refcount);
     }
     Curl_ssl_sessionid_unlock(conn);
   }
 
-  if(!connssl->cred) {
+  if(!BACKEND->cred) {
     /* setup Schannel API options */
     memset(&schannel_cred, 0, sizeof(schannel_cred));
     schannel_cred.dwVersion = SCHANNEL_CRED_VERSION;
@@ -272,14 +355,14 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
     }
 
     /* allocate memory for the re-usable credential handle */
-    connssl->cred = (struct curl_schannel_cred *)
+    BACKEND->cred = (struct curl_schannel_cred *)
       malloc(sizeof(struct curl_schannel_cred));
-    if(!connssl->cred) {
+    if(!BACKEND->cred) {
       failf(data, "schannel: unable to allocate memory");
       return CURLE_OUT_OF_MEMORY;
     }
-    memset(connssl->cred, 0, sizeof(struct curl_schannel_cred));
-    connssl->cred->refcount = 1;
+    memset(BACKEND->cred, 0, sizeof(struct curl_schannel_cred));
+    BACKEND->cred->refcount = 1;
 
     /* https://msdn.microsoft.com/en-us/library/windows/desktop/aa374716.aspx
        */
@@ -287,8 +370,8 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
       s_pSecFn->AcquireCredentialsHandle(NULL, (TCHAR *)UNISP_NAME,
                                          SECPKG_CRED_OUTBOUND, NULL,
                                          &schannel_cred, NULL, NULL,
-                                         &connssl->cred->cred_handle,
-                                         &connssl->cred->time_stamp);
+                                         &BACKEND->cred->cred_handle,
+                                         &BACKEND->cred->time_stamp);
 
     if(sspi_status != SEC_E_OK) {
       if(sspi_status == SEC_E_WRONG_PRINCIPAL)
@@ -297,7 +380,7 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
       else
         failf(data, "schannel: AcquireCredentialsHandle failed: %s",
               Curl_sspi_strerror(conn, sspi_status));
-      Curl_safefree(connssl->cred);
+      Curl_safefree(BACKEND->cred);
       return CURLE_SSL_CONNECT_ERROR;
     }
   }
@@ -312,7 +395,7 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
   }
 
 #ifdef HAS_ALPN
-  if(connssl->use_alpn) {
+  if(BACKEND->use_alpn) {
     int cur = 0;
     int list_start_index = 0;
     unsigned int *extension_len = NULL;
@@ -370,18 +453,18 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
   InitSecBufferDesc(&outbuf_desc, &outbuf, 1);
 
   /* setup request flags */
-  connssl->req_flags = ISC_REQ_SEQUENCE_DETECT | ISC_REQ_REPLAY_DETECT |
+  BACKEND->req_flags = ISC_REQ_SEQUENCE_DETECT | ISC_REQ_REPLAY_DETECT |
     ISC_REQ_CONFIDENTIALITY | ISC_REQ_ALLOCATE_MEMORY |
     ISC_REQ_STREAM;
 
   /* allocate memory for the security context handle */
-  connssl->ctxt = (struct curl_schannel_ctxt *)
+  BACKEND->ctxt = (struct curl_schannel_ctxt *)
     malloc(sizeof(struct curl_schannel_ctxt));
-  if(!connssl->ctxt) {
+  if(!BACKEND->ctxt) {
     failf(data, "schannel: unable to allocate memory");
     return CURLE_OUT_OF_MEMORY;
   }
-  memset(connssl->ctxt, 0, sizeof(struct curl_schannel_ctxt));
+  memset(BACKEND->ctxt, 0, sizeof(struct curl_schannel_ctxt));
 
   host_name = Curl_convert_UTF8_to_tchar(hostname);
   if(!host_name)
@@ -395,10 +478,10 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
      us problems with inbuf regardless. https://github.com/curl/curl/issues/983
   */
   sspi_status = s_pSecFn->InitializeSecurityContext(
-    &connssl->cred->cred_handle, NULL, host_name, connssl->req_flags, 0, 0,
-    (connssl->use_alpn ? &inbuf_desc : NULL),
-    0, &connssl->ctxt->ctxt_handle,
-    &outbuf_desc, &connssl->ret_flags, &connssl->ctxt->time_stamp);
+    &BACKEND->cred->cred_handle, NULL, host_name, BACKEND->req_flags, 0, 0,
+    (BACKEND->use_alpn ? &inbuf_desc : NULL),
+    0, &BACKEND->ctxt->ctxt_handle,
+    &outbuf_desc, &BACKEND->ret_flags, &BACKEND->ctxt->time_stamp);
 
   Curl_unicodefree(host_name);
 
@@ -409,7 +492,7 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
     else
       failf(data, "schannel: initial InitializeSecurityContext failed: %s",
             Curl_sspi_strerror(conn, sspi_status));
-    Curl_safefree(connssl->ctxt);
+    Curl_safefree(BACKEND->ctxt);
     return CURLE_SSL_CONNECT_ERROR;
   }
 
@@ -429,10 +512,10 @@ schannel_connect_step1(struct connectdata *conn, int sockindex)
   infof(data, "schannel: sent initial handshake data: "
         "sent %zd bytes\n", written);
 
-  connssl->recv_unrecoverable_err = CURLE_OK;
-  connssl->recv_sspi_close_notify = false;
-  connssl->recv_connection_closed = false;
-  connssl->encdata_is_incomplete = false;
+  BACKEND->recv_unrecoverable_err = CURLE_OK;
+  BACKEND->recv_sspi_close_notify = false;
+  BACKEND->recv_connection_closed = false;
+  BACKEND->encdata_is_incomplete = false;
 
   /* continue to second handshake step */
   connssl->connecting_state = ssl_connect_2;
@@ -465,39 +548,39 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
   infof(data, "schannel: SSL/TLS connection with %s port %hu (step 2/3)\n",
         hostname, conn->remote_port);
 
-  if(!connssl->cred || !connssl->ctxt)
+  if(!BACKEND->cred || !BACKEND->ctxt)
     return CURLE_SSL_CONNECT_ERROR;
 
   /* buffer to store previously received and decrypted data */
-  if(connssl->decdata_buffer == NULL) {
-    connssl->decdata_offset = 0;
-    connssl->decdata_length = CURL_SCHANNEL_BUFFER_INIT_SIZE;
-    connssl->decdata_buffer = malloc(connssl->decdata_length);
-    if(connssl->decdata_buffer == NULL) {
+  if(BACKEND->decdata_buffer == NULL) {
+    BACKEND->decdata_offset = 0;
+    BACKEND->decdata_length = CURL_SCHANNEL_BUFFER_INIT_SIZE;
+    BACKEND->decdata_buffer = malloc(BACKEND->decdata_length);
+    if(BACKEND->decdata_buffer == NULL) {
       failf(data, "schannel: unable to allocate memory");
       return CURLE_OUT_OF_MEMORY;
     }
   }
 
   /* buffer to store previously received and encrypted data */
-  if(connssl->encdata_buffer == NULL) {
-    connssl->encdata_is_incomplete = false;
-    connssl->encdata_offset = 0;
-    connssl->encdata_length = CURL_SCHANNEL_BUFFER_INIT_SIZE;
-    connssl->encdata_buffer = malloc(connssl->encdata_length);
-    if(connssl->encdata_buffer == NULL) {
+  if(BACKEND->encdata_buffer == NULL) {
+    BACKEND->encdata_is_incomplete = false;
+    BACKEND->encdata_offset = 0;
+    BACKEND->encdata_length = CURL_SCHANNEL_BUFFER_INIT_SIZE;
+    BACKEND->encdata_buffer = malloc(BACKEND->encdata_length);
+    if(BACKEND->encdata_buffer == NULL) {
       failf(data, "schannel: unable to allocate memory");
       return CURLE_OUT_OF_MEMORY;
     }
   }
 
   /* if we need a bigger buffer to read a full message, increase buffer now */
-  if(connssl->encdata_length - connssl->encdata_offset <
+  if(BACKEND->encdata_length - BACKEND->encdata_offset <
      CURL_SCHANNEL_BUFFER_FREE_SIZE) {
     /* increase internal encrypted data buffer */
-    reallocated_length = connssl->encdata_offset +
+    reallocated_length = BACKEND->encdata_offset +
       CURL_SCHANNEL_BUFFER_FREE_SIZE;
-    reallocated_buffer = realloc(connssl->encdata_buffer,
+    reallocated_buffer = realloc(BACKEND->encdata_buffer,
                                  reallocated_length);
 
     if(reallocated_buffer == NULL) {
@@ -505,8 +588,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       return CURLE_OUT_OF_MEMORY;
     }
     else {
-      connssl->encdata_buffer = reallocated_buffer;
-      connssl->encdata_length = reallocated_length;
+      BACKEND->encdata_buffer = reallocated_buffer;
+      BACKEND->encdata_length = reallocated_length;
     }
   }
 
@@ -514,10 +597,10 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
     if(doread) {
       /* read encrypted handshake data from socket */
       result = Curl_read_plain(conn->sock[sockindex],
-                               (char *) (connssl->encdata_buffer +
-                                         connssl->encdata_offset),
-                               connssl->encdata_length -
-                               connssl->encdata_offset,
+                               (char *) (BACKEND->encdata_buffer +
+                                         BACKEND->encdata_offset),
+                               BACKEND->encdata_length -
+                               BACKEND->encdata_offset,
                                &nread);
       if(result == CURLE_AGAIN) {
         if(connssl->connecting_state != ssl_connect_2_writing)
@@ -533,17 +616,17 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       }
 
       /* increase encrypted data buffer offset */
-      connssl->encdata_offset += nread;
-      connssl->encdata_is_incomplete = false;
+      BACKEND->encdata_offset += nread;
+      BACKEND->encdata_is_incomplete = false;
       infof(data, "schannel: encrypted data got %zd\n", nread);
     }
 
     infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-          connssl->encdata_offset, connssl->encdata_length);
+          BACKEND->encdata_offset, BACKEND->encdata_length);
 
     /* setup input buffers */
-    InitSecBuffer(&inbuf[0], SECBUFFER_TOKEN, malloc(connssl->encdata_offset),
-                  curlx_uztoul(connssl->encdata_offset));
+    InitSecBuffer(&inbuf[0], SECBUFFER_TOKEN, malloc(BACKEND->encdata_offset),
+                  curlx_uztoul(BACKEND->encdata_offset));
     InitSecBuffer(&inbuf[1], SECBUFFER_EMPTY, NULL, 0);
     InitSecBufferDesc(&inbuf_desc, inbuf, 2);
 
@@ -559,8 +642,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
     }
 
     /* copy received handshake data into input buffer */
-    memcpy(inbuf[0].pvBuffer, connssl->encdata_buffer,
-           connssl->encdata_offset);
+    memcpy(inbuf[0].pvBuffer, BACKEND->encdata_buffer,
+           BACKEND->encdata_offset);
 
     host_name = Curl_convert_UTF8_to_tchar(hostname);
     if(!host_name)
@@ -569,9 +652,9 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
     /* https://msdn.microsoft.com/en-us/library/windows/desktop/aa375924.aspx
        */
     sspi_status = s_pSecFn->InitializeSecurityContext(
-      &connssl->cred->cred_handle, &connssl->ctxt->ctxt_handle,
-      host_name, connssl->req_flags, 0, 0, &inbuf_desc, 0, NULL,
-      &outbuf_desc, &connssl->ret_flags, &connssl->ctxt->time_stamp);
+      &BACKEND->cred->cred_handle, &BACKEND->ctxt->ctxt_handle,
+      host_name, BACKEND->req_flags, 0, 0, &inbuf_desc, 0, NULL,
+      &outbuf_desc, &BACKEND->ret_flags, &BACKEND->ctxt->time_stamp);
 
     Curl_unicodefree(host_name);
 
@@ -580,7 +663,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
 
     /* check if the handshake was incomplete */
     if(sspi_status == SEC_E_INCOMPLETE_MESSAGE) {
-      connssl->encdata_is_incomplete = true;
+      BACKEND->encdata_is_incomplete = true;
       connssl->connecting_state = ssl_connect_2_reading;
       infof(data, "schannel: received incomplete message, need more data\n");
       return CURLE_OK;
@@ -590,8 +673,8 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
        the handshake without one. This will allow connections to servers which
        request a client certificate but do not require it. */
     if(sspi_status == SEC_I_INCOMPLETE_CREDENTIALS &&
-       !(connssl->req_flags & ISC_REQ_USE_SUPPLIED_CREDS)) {
-      connssl->req_flags |= ISC_REQ_USE_SUPPLIED_CREDS;
+       !(BACKEND->req_flags & ISC_REQ_USE_SUPPLIED_CREDS)) {
+      BACKEND->req_flags |= ISC_REQ_USE_SUPPLIED_CREDS;
       connssl->connecting_state = ssl_connect_2_writing;
       infof(data, "schannel: a client certificate has been requested\n");
       return CURLE_OK;
@@ -631,7 +714,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
         failf(data, "schannel: next InitializeSecurityContext failed: %s",
               Curl_sspi_strerror(conn, sspi_status));
       return sspi_status == SEC_E_UNTRUSTED_ROOT ?
-          CURLE_SSL_CACERT_BADFILE : CURLE_SSL_CONNECT_ERROR;
+          CURLE_SSL_CACERT : CURLE_SSL_CONNECT_ERROR;
     }
 
     /* check if there was additional remaining encrypted data */
@@ -649,11 +732,11 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       */
       /* check if the remaining data is less than the total amount
          and therefore begins after the already processed data */
-      if(connssl->encdata_offset > inbuf[1].cbBuffer) {
-        memmove(connssl->encdata_buffer,
-                (connssl->encdata_buffer + connssl->encdata_offset) -
+      if(BACKEND->encdata_offset > inbuf[1].cbBuffer) {
+        memmove(BACKEND->encdata_buffer,
+                (BACKEND->encdata_buffer + BACKEND->encdata_offset) -
                 inbuf[1].cbBuffer, inbuf[1].cbBuffer);
-        connssl->encdata_offset = inbuf[1].cbBuffer;
+        BACKEND->encdata_offset = inbuf[1].cbBuffer;
         if(sspi_status == SEC_I_CONTINUE_NEEDED) {
           doread = FALSE;
           continue;
@@ -661,7 +744,7 @@ schannel_connect_step2(struct connectdata *conn, int sockindex)
       }
     }
     else {
-      connssl->encdata_offset = 0;
+      BACKEND->encdata_offset = 0;
     }
     break;
   }
@@ -709,27 +792,27 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
   infof(data, "schannel: SSL/TLS connection with %s port %hu (step 3/3)\n",
         hostname, conn->remote_port);
 
-  if(!connssl->cred)
+  if(!BACKEND->cred)
     return CURLE_SSL_CONNECT_ERROR;
 
   /* check if the required context attributes are met */
-  if(connssl->ret_flags != connssl->req_flags) {
-    if(!(connssl->ret_flags & ISC_RET_SEQUENCE_DETECT))
+  if(BACKEND->ret_flags != BACKEND->req_flags) {
+    if(!(BACKEND->ret_flags & ISC_RET_SEQUENCE_DETECT))
       failf(data, "schannel: failed to setup sequence detection");
-    if(!(connssl->ret_flags & ISC_RET_REPLAY_DETECT))
+    if(!(BACKEND->ret_flags & ISC_RET_REPLAY_DETECT))
       failf(data, "schannel: failed to setup replay detection");
-    if(!(connssl->ret_flags & ISC_RET_CONFIDENTIALITY))
+    if(!(BACKEND->ret_flags & ISC_RET_CONFIDENTIALITY))
       failf(data, "schannel: failed to setup confidentiality");
-    if(!(connssl->ret_flags & ISC_RET_ALLOCATED_MEMORY))
+    if(!(BACKEND->ret_flags & ISC_RET_ALLOCATED_MEMORY))
       failf(data, "schannel: failed to setup memory allocation");
-    if(!(connssl->ret_flags & ISC_RET_STREAM))
+    if(!(BACKEND->ret_flags & ISC_RET_STREAM))
       failf(data, "schannel: failed to setup stream orientation");
     return CURLE_SSL_CONNECT_ERROR;
   }
 
 #ifdef HAS_ALPN
-  if(connssl->use_alpn) {
-    sspi_status = s_pSecFn->QueryContextAttributes(&connssl->ctxt->ctxt_handle,
+  if(BACKEND->use_alpn) {
+    sspi_status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
       SECPKG_ATTR_APPLICATION_PROTOCOL, &alpn_result);
 
     if(sspi_status != SEC_E_OK) {
@@ -771,7 +854,7 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
     incache = !(Curl_ssl_getsessionid(conn, (void **)&old_cred, NULL,
                                       sockindex));
     if(incache) {
-      if(old_cred != connssl->cred) {
+      if(old_cred != BACKEND->cred) {
         infof(data, "schannel: old credential handle is stale, removing\n");
         /* we're not taking old_cred ownership here, no refcount++ is needed */
         Curl_ssl_delsessionid(conn, (void *)old_cred);
@@ -779,7 +862,7 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
       }
     }
     if(!incache) {
-      result = Curl_ssl_addsessionid(conn, (void *)connssl->cred,
+      result = Curl_ssl_addsessionid(conn, (void *)BACKEND->cred,
                                      sizeof(struct curl_schannel_cred),
                                      sockindex);
       if(result) {
@@ -789,7 +872,7 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
       }
       else {
         /* this cred session is now also referenced by sessionid cache */
-        connssl->cred->refcount++;
+        BACKEND->cred->refcount++;
         infof(data, "schannel: stored credential handle in session cache\n");
       }
     }
@@ -797,7 +880,7 @@ schannel_connect_step3(struct connectdata *conn, int sockindex)
   }
 
   if(data->set.ssl.certinfo) {
-    sspi_status = s_pSecFn->QueryContextAttributes(&connssl->ctxt->ctxt_handle,
+    sspi_status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
       SECPKG_ATTR_REMOTE_CERT_CONTEXT, &ccert_context);
 
     if((sspi_status != SEC_E_OK) || (ccert_context == NULL)) {
@@ -951,11 +1034,11 @@ schannel_send(struct connectdata *conn, int sockindex,
   CURLcode result;
 
   /* check if the maximum stream sizes were queried */
-  if(connssl->stream_sizes.cbMaximumMessage == 0) {
+  if(BACKEND->stream_sizes.cbMaximumMessage == 0) {
     sspi_status = s_pSecFn->QueryContextAttributes(
-      &connssl->ctxt->ctxt_handle,
+      &BACKEND->ctxt->ctxt_handle,
       SECPKG_ATTR_STREAM_SIZES,
-      &connssl->stream_sizes);
+      &BACKEND->stream_sizes);
     if(sspi_status != SEC_E_OK) {
       *err = CURLE_SEND_ERROR;
       return -1;
@@ -963,14 +1046,13 @@ schannel_send(struct connectdata *conn, int sockindex,
   }
 
   /* check if the buffer is longer than the maximum message length */
-  if(len > connssl->stream_sizes.cbMaximumMessage) {
-    *err = CURLE_SEND_ERROR;
-    return -1;
+  if(len > BACKEND->stream_sizes.cbMaximumMessage) {
+    len = BACKEND->stream_sizes.cbMaximumMessage;
   }
 
   /* calculate the complete message length and allocate a buffer for it */
-  data_len = connssl->stream_sizes.cbHeader + len +
-    connssl->stream_sizes.cbTrailer;
+  data_len = BACKEND->stream_sizes.cbHeader + len +
+    BACKEND->stream_sizes.cbTrailer;
   data = (unsigned char *) malloc(data_len);
   if(data == NULL) {
     *err = CURLE_OUT_OF_MEMORY;
@@ -979,12 +1061,12 @@ schannel_send(struct connectdata *conn, int sockindex,
 
   /* setup output buffers (header, data, trailer, empty) */
   InitSecBuffer(&outbuf[0], SECBUFFER_STREAM_HEADER,
-                data, connssl->stream_sizes.cbHeader);
+                data, BACKEND->stream_sizes.cbHeader);
   InitSecBuffer(&outbuf[1], SECBUFFER_DATA,
-                data + connssl->stream_sizes.cbHeader, curlx_uztoul(len));
+                data + BACKEND->stream_sizes.cbHeader, curlx_uztoul(len));
   InitSecBuffer(&outbuf[2], SECBUFFER_STREAM_TRAILER,
-                data + connssl->stream_sizes.cbHeader + len,
-                connssl->stream_sizes.cbTrailer);
+                data + BACKEND->stream_sizes.cbHeader + len,
+                BACKEND->stream_sizes.cbTrailer);
   InitSecBuffer(&outbuf[3], SECBUFFER_EMPTY, NULL, 0);
   InitSecBufferDesc(&outbuf_desc, outbuf, 4);
 
@@ -992,7 +1074,7 @@ schannel_send(struct connectdata *conn, int sockindex,
   memcpy(outbuf[1].pvBuffer, buf, len);
 
   /* https://msdn.microsoft.com/en-us/library/windows/desktop/aa375390.aspx */
-  sspi_status = s_pSecFn->EncryptMessage(&connssl->ctxt->ctxt_handle, 0,
+  sspi_status = s_pSecFn->EncryptMessage(&BACKEND->ctxt->ctxt_handle, 0,
                                          &outbuf_desc, 0);
 
   /* check if the message was encrypted */
@@ -1102,7 +1184,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
   size_t min_encdata_length = len + CURL_SCHANNEL_BUFFER_FREE_SIZE;
 
   /****************************************************************************
-   * Don't return or set connssl->recv_unrecoverable_err unless in the cleanup.
+   * Don't return or set BACKEND->recv_unrecoverable_err unless in the cleanup.
    * The pattern for return error is set *err, optional infof, goto cleanup.
    *
    * Our priority is to always return as much decrypted data to the caller as
@@ -1114,16 +1196,16 @@ schannel_recv(struct connectdata *conn, int sockindex,
   infof(data, "schannel: client wants to read %zu bytes\n", len);
   *err = CURLE_OK;
 
-  if(len && len <= connssl->decdata_offset) {
+  if(len && len <= BACKEND->decdata_offset) {
     infof(data, "schannel: enough decrypted data is already available\n");
     goto cleanup;
   }
-  else if(connssl->recv_unrecoverable_err) {
-    *err = connssl->recv_unrecoverable_err;
+  else if(BACKEND->recv_unrecoverable_err) {
+    *err = BACKEND->recv_unrecoverable_err;
     infof(data, "schannel: an unrecoverable error occurred in a prior call\n");
     goto cleanup;
   }
-  else if(connssl->recv_sspi_close_notify) {
+  else if(BACKEND->recv_sspi_close_notify) {
     /* once a server has indicated shutdown there is no more encrypted data */
     infof(data, "schannel: server indicated shutdown in a prior call\n");
     goto cleanup;
@@ -1135,17 +1217,17 @@ schannel_recv(struct connectdata *conn, int sockindex,
     */
     ; /* do nothing */
   }
-  else if(!connssl->recv_connection_closed) {
+  else if(!BACKEND->recv_connection_closed) {
     /* increase enc buffer in order to fit the requested amount of data */
-    size = connssl->encdata_length - connssl->encdata_offset;
+    size = BACKEND->encdata_length - BACKEND->encdata_offset;
     if(size < CURL_SCHANNEL_BUFFER_FREE_SIZE ||
-       connssl->encdata_length < min_encdata_length) {
-      reallocated_length = connssl->encdata_offset +
+       BACKEND->encdata_length < min_encdata_length) {
+      reallocated_length = BACKEND->encdata_offset +
                            CURL_SCHANNEL_BUFFER_FREE_SIZE;
       if(reallocated_length < min_encdata_length) {
         reallocated_length = min_encdata_length;
       }
-      reallocated_buffer = realloc(connssl->encdata_buffer,
+      reallocated_buffer = realloc(BACKEND->encdata_buffer,
                                    reallocated_length);
       if(reallocated_buffer == NULL) {
         *err = CURLE_OUT_OF_MEMORY;
@@ -1153,20 +1235,20 @@ schannel_recv(struct connectdata *conn, int sockindex,
         goto cleanup;
       }
 
-      connssl->encdata_buffer = reallocated_buffer;
-      connssl->encdata_length = reallocated_length;
-      size = connssl->encdata_length - connssl->encdata_offset;
+      BACKEND->encdata_buffer = reallocated_buffer;
+      BACKEND->encdata_length = reallocated_length;
+      size = BACKEND->encdata_length - BACKEND->encdata_offset;
       infof(data, "schannel: encdata_buffer resized %zu\n",
-            connssl->encdata_length);
+            BACKEND->encdata_length);
     }
 
     infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-          connssl->encdata_offset, connssl->encdata_length);
+          BACKEND->encdata_offset, BACKEND->encdata_length);
 
     /* read encrypted data from socket */
     *err = Curl_read_plain(conn->sock[sockindex],
-                           (char *)(connssl->encdata_buffer +
-                                    connssl->encdata_offset),
+                           (char *)(BACKEND->encdata_buffer +
+                                    BACKEND->encdata_offset),
                            size, &nread);
     if(*err) {
       nread = -1;
@@ -1178,26 +1260,26 @@ schannel_recv(struct connectdata *conn, int sockindex,
         infof(data, "schannel: Curl_read_plain returned error %d\n", *err);
     }
     else if(nread == 0) {
-      connssl->recv_connection_closed = true;
+      BACKEND->recv_connection_closed = true;
       infof(data, "schannel: server closed the connection\n");
     }
     else if(nread > 0) {
-      connssl->encdata_offset += (size_t)nread;
-      connssl->encdata_is_incomplete = false;
+      BACKEND->encdata_offset += (size_t)nread;
+      BACKEND->encdata_is_incomplete = false;
       infof(data, "schannel: encrypted data got %zd\n", nread);
     }
   }
 
   infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-        connssl->encdata_offset, connssl->encdata_length);
+        BACKEND->encdata_offset, BACKEND->encdata_length);
 
   /* decrypt loop */
-  while(connssl->encdata_offset > 0 && sspi_status == SEC_E_OK &&
-        (!len || connssl->decdata_offset < len ||
-         connssl->recv_connection_closed)) {
+  while(BACKEND->encdata_offset > 0 && sspi_status == SEC_E_OK &&
+        (!len || BACKEND->decdata_offset < len ||
+         BACKEND->recv_connection_closed)) {
     /* prepare data buffer for DecryptMessage call */
-    InitSecBuffer(&inbuf[0], SECBUFFER_DATA, connssl->encdata_buffer,
-                  curlx_uztoul(connssl->encdata_offset));
+    InitSecBuffer(&inbuf[0], SECBUFFER_DATA, BACKEND->encdata_buffer,
+                  curlx_uztoul(BACKEND->encdata_offset));
 
     /* we need 3 more empty input buffers for possible output */
     InitSecBuffer(&inbuf[1], SECBUFFER_EMPTY, NULL, 0);
@@ -1207,7 +1289,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
 
     /* https://msdn.microsoft.com/en-us/library/windows/desktop/aa375348.aspx
        */
-    sspi_status = s_pSecFn->DecryptMessage(&connssl->ctxt->ctxt_handle,
+    sspi_status = s_pSecFn->DecryptMessage(&BACKEND->ctxt->ctxt_handle,
                                            &inbuf_desc, 0, NULL);
 
     /* check if everything went fine (server may want to renegotiate
@@ -1223,36 +1305,36 @@ schannel_recv(struct connectdata *conn, int sockindex,
         /* increase buffer in order to fit the received amount of data */
         size = inbuf[1].cbBuffer > CURL_SCHANNEL_BUFFER_FREE_SIZE ?
                inbuf[1].cbBuffer : CURL_SCHANNEL_BUFFER_FREE_SIZE;
-        if(connssl->decdata_length - connssl->decdata_offset < size ||
-           connssl->decdata_length < len) {
+        if(BACKEND->decdata_length - BACKEND->decdata_offset < size ||
+           BACKEND->decdata_length < len) {
           /* increase internal decrypted data buffer */
-          reallocated_length = connssl->decdata_offset + size;
+          reallocated_length = BACKEND->decdata_offset + size;
           /* make sure that the requested amount of data fits */
           if(reallocated_length < len) {
             reallocated_length = len;
           }
-          reallocated_buffer = realloc(connssl->decdata_buffer,
+          reallocated_buffer = realloc(BACKEND->decdata_buffer,
                                        reallocated_length);
           if(reallocated_buffer == NULL) {
             *err = CURLE_OUT_OF_MEMORY;
             failf(data, "schannel: unable to re-allocate memory");
             goto cleanup;
           }
-          connssl->decdata_buffer = reallocated_buffer;
-          connssl->decdata_length = reallocated_length;
+          BACKEND->decdata_buffer = reallocated_buffer;
+          BACKEND->decdata_length = reallocated_length;
         }
 
         /* copy decrypted data to internal buffer */
         size = inbuf[1].cbBuffer;
         if(size) {
-          memcpy(connssl->decdata_buffer + connssl->decdata_offset,
+          memcpy(BACKEND->decdata_buffer + BACKEND->decdata_offset,
                  inbuf[1].pvBuffer, size);
-          connssl->decdata_offset += size;
+          BACKEND->decdata_offset += size;
         }
 
         infof(data, "schannel: decrypted data added: %zu\n", size);
         infof(data, "schannel: decrypted data cached: offset %zu length %zu\n",
-              connssl->decdata_offset, connssl->decdata_length);
+              BACKEND->decdata_offset, BACKEND->decdata_length);
       }
 
       /* check for remaining encrypted data */
@@ -1263,21 +1345,21 @@ schannel_recv(struct connectdata *conn, int sockindex,
         /* check if the remaining data is less than the total amount
          * and therefore begins after the already processed data
          */
-        if(connssl->encdata_offset > inbuf[3].cbBuffer) {
+        if(BACKEND->encdata_offset > inbuf[3].cbBuffer) {
           /* move remaining encrypted data forward to the beginning of
              buffer */
-          memmove(connssl->encdata_buffer,
-                  (connssl->encdata_buffer + connssl->encdata_offset) -
+          memmove(BACKEND->encdata_buffer,
+                  (BACKEND->encdata_buffer + BACKEND->encdata_offset) -
                   inbuf[3].cbBuffer, inbuf[3].cbBuffer);
-          connssl->encdata_offset = inbuf[3].cbBuffer;
+          BACKEND->encdata_offset = inbuf[3].cbBuffer;
         }
 
         infof(data, "schannel: encrypted data cached: offset %zu length %zu\n",
-              connssl->encdata_offset, connssl->encdata_length);
+              BACKEND->encdata_offset, BACKEND->encdata_length);
       }
       else {
         /* reset encrypted buffer offset, because there is no data remaining */
-        connssl->encdata_offset = 0;
+        BACKEND->encdata_offset = 0;
       }
 
       /* check if server wants to renegotiate the connection context */
@@ -1287,7 +1369,7 @@ schannel_recv(struct connectdata *conn, int sockindex,
           infof(data, "schannel: can't renogotiate, an error is pending\n");
           goto cleanup;
         }
-        if(connssl->encdata_offset) {
+        if(BACKEND->encdata_offset) {
           *err = CURLE_RECV_ERROR;
           infof(data, "schannel: can't renogotiate, "
                       "encrypted data available\n");
@@ -1311,16 +1393,16 @@ schannel_recv(struct connectdata *conn, int sockindex,
       else if(sspi_status == SEC_I_CONTEXT_EXPIRED) {
         /* In Windows 2000 SEC_I_CONTEXT_EXPIRED (close_notify) is not
            returned so we have to work around that in cleanup. */
-        connssl->recv_sspi_close_notify = true;
-        if(!connssl->recv_connection_closed) {
-          connssl->recv_connection_closed = true;
+        BACKEND->recv_sspi_close_notify = true;
+        if(!BACKEND->recv_connection_closed) {
+          BACKEND->recv_connection_closed = true;
           infof(data, "schannel: server closed the connection\n");
         }
         goto cleanup;
       }
     }
     else if(sspi_status == SEC_E_INCOMPLETE_MESSAGE) {
-      connssl->encdata_is_incomplete = true;
+      BACKEND->encdata_is_incomplete = true;
       if(!*err)
         *err = CURLE_AGAIN;
       infof(data, "schannel: failed to decrypt data, need more data\n");
@@ -1335,10 +1417,10 @@ schannel_recv(struct connectdata *conn, int sockindex,
   }
 
   infof(data, "schannel: encrypted data buffer: offset %zu length %zu\n",
-        connssl->encdata_offset, connssl->encdata_length);
+        BACKEND->encdata_offset, BACKEND->encdata_length);
 
   infof(data, "schannel: decrypted data buffer: offset %zu length %zu\n",
-        connssl->decdata_offset, connssl->decdata_length);
+        BACKEND->decdata_offset, BACKEND->decdata_length);
 
 cleanup:
   /* Warning- there is no guarantee the encdata state is valid at this point */
@@ -1352,13 +1434,13 @@ cleanup:
   return close_notify. In that case if the connection was closed we assume it
   was graceful (close_notify) since there doesn't seem to be a way to tell.
   */
-  if(len && !connssl->decdata_offset && connssl->recv_connection_closed &&
-     !connssl->recv_sspi_close_notify) {
+  if(len && !BACKEND->decdata_offset && BACKEND->recv_connection_closed &&
+     !BACKEND->recv_sspi_close_notify) {
     bool isWin2k = Curl_verify_windows_version(5, 0, PLATFORM_WINNT,
                                                VERSION_EQUAL);
 
     if(isWin2k && sspi_status == SEC_E_OK)
-      connssl->recv_sspi_close_notify = true;
+      BACKEND->recv_sspi_close_notify = true;
     else {
       *err = CURLE_RECV_ERROR;
       infof(data, "schannel: server closed abruptly (missing close_notify)\n");
@@ -1367,23 +1449,23 @@ cleanup:
 
   /* Any error other than CURLE_AGAIN is an unrecoverable error. */
   if(*err && *err != CURLE_AGAIN)
-      connssl->recv_unrecoverable_err = *err;
+      BACKEND->recv_unrecoverable_err = *err;
 
-  size = len < connssl->decdata_offset ? len : connssl->decdata_offset;
+  size = len < BACKEND->decdata_offset ? len : BACKEND->decdata_offset;
   if(size) {
-    memcpy(buf, connssl->decdata_buffer, size);
-    memmove(connssl->decdata_buffer, connssl->decdata_buffer + size,
-            connssl->decdata_offset - size);
-    connssl->decdata_offset -= size;
+    memcpy(buf, BACKEND->decdata_buffer, size);
+    memmove(BACKEND->decdata_buffer, BACKEND->decdata_buffer + size,
+            BACKEND->decdata_offset - size);
+    BACKEND->decdata_offset -= size;
 
     infof(data, "schannel: decrypted data returned %zu\n", size);
     infof(data, "schannel: decrypted data buffer: offset %zu length %zu\n",
-          connssl->decdata_offset, connssl->decdata_length);
+          BACKEND->decdata_offset, BACKEND->decdata_length);
     *err = CURLE_OK;
     return (ssize_t)size;
   }
 
-  if(!*err && !connssl->recv_connection_closed)
+  if(!*err && !BACKEND->recv_connection_closed)
       *err = CURLE_AGAIN;
 
   /* It's debatable what to return when !len. We could return whatever error we
@@ -1395,15 +1477,13 @@ cleanup:
   return *err ? -1 : 0;
 }
 
-CURLcode
-Curl_schannel_connect_nonblocking(struct connectdata *conn, int sockindex,
-                                  bool *done)
+static CURLcode Curl_schannel_connect_nonblocking(struct connectdata *conn,
+                                                  int sockindex, bool *done)
 {
   return schannel_connect_common(conn, sockindex, TRUE, done);
 }
 
-CURLcode
-Curl_schannel_connect(struct connectdata *conn, int sockindex)
+static CURLcode Curl_schannel_connect(struct connectdata *conn, int sockindex)
 {
   CURLcode result;
   bool done = FALSE;
@@ -1417,25 +1497,38 @@ Curl_schannel_connect(struct connectdata *conn, int sockindex)
   return CURLE_OK;
 }
 
-bool Curl_schannel_data_pending(const struct connectdata *conn, int sockindex)
+static bool Curl_schannel_data_pending(const struct connectdata *conn,
+                                       int sockindex)
 {
   const struct ssl_connect_data *connssl = &conn->ssl[sockindex];
 
   if(connssl->use) /* SSL/TLS is in use */
-    return (connssl->decdata_offset > 0 ||
-            (connssl->encdata_offset > 0 && !connssl->encdata_is_incomplete));
+    return (BACKEND->decdata_offset > 0 ||
+            (BACKEND->encdata_offset > 0 && !BACKEND->encdata_is_incomplete));
   else
     return FALSE;
 }
 
-void Curl_schannel_close(struct connectdata *conn, int sockindex)
+static void Curl_schannel_close(struct connectdata *conn, int sockindex)
 {
   if(conn->ssl[sockindex].use)
     /* if the SSL/TLS channel hasn't been shut down yet, do that now. */
     Curl_ssl_shutdown(conn, sockindex);
 }
 
-int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
+static void Curl_schannel_session_free(void *ptr)
+{
+  /* this is expected to be called under sessionid lock */
+  struct curl_schannel_cred *cred = ptr;
+
+  cred->refcount--;
+  if(cred->refcount == 0) {
+    s_pSecFn->FreeCredentialsHandle(&cred->cred_handle);
+    Curl_safefree(cred);
+  }
+}
+
+static int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
 {
   /* See https://msdn.microsoft.com/en-us/library/windows/desktop/aa380138.aspx
    * Shutting Down an Schannel Connection
@@ -1448,7 +1541,7 @@ int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
   infof(data, "schannel: shutting down SSL/TLS connection with %s port %hu\n",
         hostname, conn->remote_port);
 
-  if(connssl->cred && connssl->ctxt) {
+  if(BACKEND->cred && BACKEND->ctxt) {
     SecBufferDesc BuffDesc;
     SecBuffer Buffer;
     SECURITY_STATUS sspi_status;
@@ -1461,7 +1554,7 @@ int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
     InitSecBuffer(&Buffer, SECBUFFER_TOKEN, &dwshut, sizeof(dwshut));
     InitSecBufferDesc(&BuffDesc, &Buffer, 1);
 
-    sspi_status = s_pSecFn->ApplyControlToken(&connssl->ctxt->ctxt_handle,
+    sspi_status = s_pSecFn->ApplyControlToken(&BACKEND->ctxt->ctxt_handle,
                                               &BuffDesc);
 
     if(sspi_status != SEC_E_OK)
@@ -1477,18 +1570,18 @@ int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
     InitSecBufferDesc(&outbuf_desc, &outbuf, 1);
 
     sspi_status = s_pSecFn->InitializeSecurityContext(
-      &connssl->cred->cred_handle,
-      &connssl->ctxt->ctxt_handle,
+      &BACKEND->cred->cred_handle,
+      &BACKEND->ctxt->ctxt_handle,
       host_name,
-      connssl->req_flags,
+      BACKEND->req_flags,
       0,
       0,
       NULL,
       0,
-      &connssl->ctxt->ctxt_handle,
+      &BACKEND->ctxt->ctxt_handle,
       &outbuf_desc,
-      &connssl->ret_flags,
-      &connssl->ctxt->time_stamp);
+      &BACKEND->ret_flags,
+      &BACKEND->ctxt->time_stamp);
 
     Curl_unicodefree(host_name);
 
@@ -1507,71 +1600,62 @@ int Curl_schannel_shutdown(struct connectdata *conn, int sockindex)
   }
 
   /* free SSPI Schannel API security context handle */
-  if(connssl->ctxt) {
+  if(BACKEND->ctxt) {
     infof(data, "schannel: clear security context handle\n");
-    s_pSecFn->DeleteSecurityContext(&connssl->ctxt->ctxt_handle);
-    Curl_safefree(connssl->ctxt);
+    s_pSecFn->DeleteSecurityContext(&BACKEND->ctxt->ctxt_handle);
+    Curl_safefree(BACKEND->ctxt);
   }
 
   /* free SSPI Schannel API credential handle */
-  if(connssl->cred) {
+  if(BACKEND->cred) {
     Curl_ssl_sessionid_lock(conn);
-    Curl_schannel_session_free(connssl->cred);
+    Curl_schannel_session_free(BACKEND->cred);
     Curl_ssl_sessionid_unlock(conn);
-    connssl->cred = NULL;
+    BACKEND->cred = NULL;
   }
 
   /* free internal buffer for received encrypted data */
-  if(connssl->encdata_buffer != NULL) {
-    Curl_safefree(connssl->encdata_buffer);
-    connssl->encdata_length = 0;
-    connssl->encdata_offset = 0;
-    connssl->encdata_is_incomplete = false;
+  if(BACKEND->encdata_buffer != NULL) {
+    Curl_safefree(BACKEND->encdata_buffer);
+    BACKEND->encdata_length = 0;
+    BACKEND->encdata_offset = 0;
+    BACKEND->encdata_is_incomplete = false;
   }
 
   /* free internal buffer for received decrypted data */
-  if(connssl->decdata_buffer != NULL) {
-    Curl_safefree(connssl->decdata_buffer);
-    connssl->decdata_length = 0;
-    connssl->decdata_offset = 0;
+  if(BACKEND->decdata_buffer != NULL) {
+    Curl_safefree(BACKEND->decdata_buffer);
+    BACKEND->decdata_length = 0;
+    BACKEND->decdata_offset = 0;
   }
 
   return CURLE_OK;
 }
 
-void Curl_schannel_session_free(void *ptr)
-{
-  /* this is expected to be called under sessionid lock */
-  struct curl_schannel_cred *cred = ptr;
-
-  cred->refcount--;
-  if(cred->refcount == 0) {
-    s_pSecFn->FreeCredentialsHandle(&cred->cred_handle);
-    Curl_safefree(cred);
-  }
-}
-
-int Curl_schannel_init(void)
+static int Curl_schannel_init(void)
 {
   return (Curl_sspi_global_init() == CURLE_OK ? 1 : 0);
 }
 
-void Curl_schannel_cleanup(void)
+static void Curl_schannel_cleanup(void)
 {
   Curl_sspi_global_cleanup();
 }
 
-size_t Curl_schannel_version(char *buffer, size_t size)
+static size_t Curl_schannel_version(char *buffer, size_t size)
 {
   size = snprintf(buffer, size, "WinSSL");
 
   return size;
 }
 
-CURLcode Curl_schannel_random(unsigned char *entropy, size_t length)
+static CURLcode Curl_schannel_random(struct Curl_easy *data UNUSED_PARAM,
+                                     unsigned char *entropy, size_t length)
 {
   HCRYPTPROV hCryptProv = 0;
 
+  (void)data;
+
   if(!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL,
                           CRYPT_VERIFYCONTEXT | CRYPT_SILENT))
     return CURLE_FAILED_INIT;
@@ -1598,7 +1682,7 @@ static CURLcode verify_certificate(struct connectdata *conn, int sockindex)
     conn->http_proxy.host.name :
     conn->host.name;
 
-  status = s_pSecFn->QueryContextAttributes(&connssl->ctxt->ctxt_handle,
+  status = s_pSecFn->QueryContextAttributes(&BACKEND->ctxt->ctxt_handle,
                                             SECPKG_ATTR_REMOTE_CERT_CONTEXT,
                                             &pCertContextServer);
 
@@ -1725,4 +1809,44 @@ static CURLcode verify_certificate(struct connectdata *conn, int sockindex)
 }
 #endif /* _WIN32_WCE */
 
+static void *Curl_schannel_get_internals(struct ssl_connect_data *connssl,
+                                         CURLINFO info UNUSED_PARAM)
+{
+  (void)info;
+  return &BACKEND->ctxt->ctxt_handle;
+}
+
+const struct Curl_ssl Curl_ssl_schannel = {
+  { CURLSSLBACKEND_SCHANNEL, "schannel" }, /* info */
+
+  0, /* have_ca_path */
+  1, /* have_certinfo */
+  0, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  sizeof(struct ssl_backend_data),
+
+  Curl_schannel_init,                /* init */
+  Curl_schannel_cleanup,             /* cleanup */
+  Curl_schannel_version,             /* version */
+  Curl_none_check_cxn,               /* check_cxn */
+  Curl_schannel_shutdown,            /* shutdown */
+  Curl_schannel_data_pending,        /* data_pending */
+  Curl_schannel_random,              /* random */
+  Curl_none_cert_status_request,     /* cert_status_request */
+  Curl_schannel_connect,             /* connect */
+  Curl_schannel_connect_nonblocking, /* connect_nonblocking */
+  Curl_schannel_get_internals,       /* get_internals */
+  Curl_schannel_close,               /* close */
+  Curl_none_close_all,               /* close_all */
+  Curl_schannel_session_free,        /* session_free */
+  Curl_none_set_engine,              /* set_engine */
+  Curl_none_set_engine_default,      /* set_engine_default */
+  Curl_none_engines_list,            /* engines_list */
+  Curl_none_false_start,             /* false_start */
+  Curl_none_md5sum,                  /* md5sum */
+  NULL                               /* sha256sum */
+};
+
 #endif /* USE_SCHANNEL */
diff --git a/lib/vtls/schannel.h b/lib/vtls/schannel.h
index 8627c63..932103d 100644
--- a/lib/vtls/schannel.h
+++ b/lib/vtls/schannel.h
@@ -28,94 +28,7 @@
 
 #include "urldata.h"
 
-#ifndef UNISP_NAME_A
-#define UNISP_NAME_A "Microsoft Unified Security Protocol Provider"
-#endif
-
-#ifndef UNISP_NAME_W
-#define UNISP_NAME_W L"Microsoft Unified Security Protocol Provider"
-#endif
-
-#ifndef UNISP_NAME
-#ifdef UNICODE
-#define UNISP_NAME  UNISP_NAME_W
-#else
-#define UNISP_NAME  UNISP_NAME_A
-#endif
-#endif
-
-#ifndef SP_PROT_SSL2_CLIENT
-#define SP_PROT_SSL2_CLIENT             0x00000008
-#endif
-
-#ifndef SP_PROT_SSL3_CLIENT
-#define SP_PROT_SSL3_CLIENT             0x00000008
-#endif
-
-#ifndef SP_PROT_TLS1_CLIENT
-#define SP_PROT_TLS1_CLIENT             0x00000080
-#endif
-
-#ifndef SP_PROT_TLS1_0_CLIENT
-#define SP_PROT_TLS1_0_CLIENT           SP_PROT_TLS1_CLIENT
-#endif
-
-#ifndef SP_PROT_TLS1_1_CLIENT
-#define SP_PROT_TLS1_1_CLIENT           0x00000200
-#endif
-
-#ifndef SP_PROT_TLS1_2_CLIENT
-#define SP_PROT_TLS1_2_CLIENT           0x00000800
-#endif
-
-#ifndef SECBUFFER_ALERT
-#define SECBUFFER_ALERT                 17
-#endif
-
-/* Both schannel buffer sizes must be > 0 */
-#define CURL_SCHANNEL_BUFFER_INIT_SIZE   4096
-#define CURL_SCHANNEL_BUFFER_FREE_SIZE   1024
-
-
-CURLcode Curl_schannel_connect(struct connectdata *conn, int sockindex);
-
-CURLcode Curl_schannel_connect_nonblocking(struct connectdata *conn,
-                                           int sockindex,
-                                           bool *done);
-
-bool Curl_schannel_data_pending(const struct connectdata *conn, int sockindex);
-void Curl_schannel_close(struct connectdata *conn, int sockindex);
-int Curl_schannel_shutdown(struct connectdata *conn, int sockindex);
-void Curl_schannel_session_free(void *ptr);
-
-int Curl_schannel_init(void);
-void Curl_schannel_cleanup(void);
-size_t Curl_schannel_version(char *buffer, size_t size);
-
-CURLcode Curl_schannel_random(unsigned char *entropy, size_t length);
-
-/* Set the API backend definition to Schannel */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_SCHANNEL
-
-/* this backend supports CURLOPT_CERTINFO */
-#define have_curlssl_certinfo 1
-
-/* API setup for Schannel */
-#define curlssl_init Curl_schannel_init
-#define curlssl_cleanup Curl_schannel_cleanup
-#define curlssl_connect Curl_schannel_connect
-#define curlssl_connect_nonblocking Curl_schannel_connect_nonblocking
-#define curlssl_session_free Curl_schannel_session_free
-#define curlssl_close_all(x) ((void)x)
-#define curlssl_close Curl_schannel_close
-#define curlssl_shutdown Curl_schannel_shutdown
-#define curlssl_set_engine(x,y) ((void)x, (void)y, CURLE_NOT_BUILT_IN)
-#define curlssl_set_engine_default(x) ((void)x, CURLE_NOT_BUILT_IN)
-#define curlssl_engines_list(x) ((void)x, (struct curl_slist *)NULL)
-#define curlssl_version Curl_schannel_version
-#define curlssl_check_cxn(x) ((void)x, -1)
-#define curlssl_data_pending Curl_schannel_data_pending
-#define curlssl_random(x,y,z) ((void)x, Curl_schannel_random(y,z))
+extern const struct Curl_ssl Curl_ssl_schannel;
 
 #endif /* USE_SCHANNEL */
 #endif /* HEADER_CURL_SCHANNEL_H */
diff --git a/lib/vtls/vtls.c b/lib/vtls/vtls.c
index d5d0971..bb8fda4 100644
--- a/lib/vtls/vtls.c
+++ b/lib/vtls/vtls.c
@@ -28,17 +28,9 @@
    to any specific SSL-layer.
 
    Curl_ssl_ - prefix for generic ones
-   Curl_ossl_ - prefix for OpenSSL ones
-   Curl_gtls_ - prefix for GnuTLS ones
-   Curl_nss_ - prefix for NSS ones
-   Curl_gskit_ - prefix for GSKit ones
-   Curl_polarssl_ - prefix for PolarSSL ones
-   Curl_cyassl_ - prefix for CyaSSL ones
-   Curl_schannel_ - prefix for Schannel SSPI ones
-   Curl_darwinssl_ - prefix for SecureTransport (Darwin) ones
-
-   Note that this source code uses curlssl_* functions, and they are all
-   defines/macros #defined by the lib-specific header files.
+
+   Note that this source code uses the functions of the configured SSL
+   backend via the global Curl_ssl instance.
 
    "SSL/TLS Strong Encryption: An Introduction"
    https://httpd.apache.org/docs/2.0/ssl/ssl_intro.html
@@ -98,9 +90,12 @@ Curl_ssl_config_matches(struct ssl_primary_config* data,
      (data->version_max == needle->version_max) &&
      (data->verifypeer == needle->verifypeer) &&
      (data->verifyhost == needle->verifyhost) &&
+     (data->verifystatus == needle->verifystatus) &&
      Curl_safe_strcasecompare(data->CApath, needle->CApath) &&
      Curl_safe_strcasecompare(data->CAfile, needle->CAfile) &&
      Curl_safe_strcasecompare(data->clientcert, needle->clientcert) &&
+     Curl_safe_strcasecompare(data->random_file, needle->random_file) &&
+     Curl_safe_strcasecompare(data->egdsocket, needle->egdsocket) &&
      Curl_safe_strcasecompare(data->cipher_list, needle->cipher_list))
     return TRUE;
 
@@ -111,42 +106,51 @@ bool
 Curl_clone_primary_ssl_config(struct ssl_primary_config *source,
                               struct ssl_primary_config *dest)
 {
-  dest->verifyhost = source->verifyhost;
-  dest->verifypeer = source->verifypeer;
   dest->version = source->version;
   dest->version_max = source->version_max;
+  dest->verifypeer = source->verifypeer;
+  dest->verifyhost = source->verifyhost;
+  dest->verifystatus = source->verifystatus;
+  dest->sessionid = source->sessionid;
 
-  CLONE_STRING(CAfile);
   CLONE_STRING(CApath);
-  CLONE_STRING(cipher_list);
-  CLONE_STRING(egdsocket);
-  CLONE_STRING(random_file);
+  CLONE_STRING(CAfile);
   CLONE_STRING(clientcert);
+  CLONE_STRING(random_file);
+  CLONE_STRING(egdsocket);
+  CLONE_STRING(cipher_list);
 
-  /* Disable dest sessionid cache if a client cert is used, CVE-2016-5419. */
-  dest->sessionid = (dest->clientcert ? false : source->sessionid);
   return TRUE;
 }
 
 void Curl_free_primary_ssl_config(struct ssl_primary_config* sslc)
 {
-  Curl_safefree(sslc->CAfile);
   Curl_safefree(sslc->CApath);
-  Curl_safefree(sslc->cipher_list);
-  Curl_safefree(sslc->egdsocket);
-  Curl_safefree(sslc->random_file);
+  Curl_safefree(sslc->CAfile);
   Curl_safefree(sslc->clientcert);
+  Curl_safefree(sslc->random_file);
+  Curl_safefree(sslc->egdsocket);
+  Curl_safefree(sslc->cipher_list);
 }
 
+#ifdef USE_SSL
+static int multissl_init(const struct Curl_ssl *backend);
+#endif
+
 int Curl_ssl_backend(void)
 {
-  return (int)CURL_SSL_BACKEND;
+#ifdef USE_SSL
+  multissl_init(NULL);
+  return Curl_ssl->info.id;
+#else
+  return (int)CURLSSLBACKEND_NONE;
+#endif
 }
 
 #ifdef USE_SSL
 
 /* "global" init done? */
-static bool init_ssl=FALSE;
+static bool init_ssl = FALSE;
 
 /**
  * Global SSL init
@@ -161,7 +165,7 @@ int Curl_ssl_init(void)
     return 1;
   init_ssl = TRUE; /* never again */
 
-  return curlssl_init();
+  return Curl_ssl->init();
 }
 
 
@@ -170,7 +174,7 @@ void Curl_ssl_cleanup(void)
 {
   if(init_ssl) {
     /* only cleanup if we did a previous init */
-    curlssl_cleanup();
+    Curl_ssl->cleanup();
     init_ssl = FALSE;
   }
 }
@@ -205,12 +209,20 @@ ssl_connect_init_proxy(struct connectdata *conn, int sockindex)
   DEBUGASSERT(conn->bits.proxy_ssl_connected[sockindex]);
   if(ssl_connection_complete == conn->ssl[sockindex].state &&
      !conn->proxy_ssl[sockindex].use) {
-#if defined(HTTPS_PROXY_SUPPORT)
+    struct ssl_backend_data *pbdata;
+
+    if(!Curl_ssl->support_https_proxy)
+      return CURLE_NOT_BUILT_IN;
+
+    /* The pointers to the ssl backend data, which is opaque here, are swapped
+       rather than move the contents. */
+    pbdata = conn->proxy_ssl[sockindex].backend;
     conn->proxy_ssl[sockindex] = conn->ssl[sockindex];
+
     memset(&conn->ssl[sockindex], 0, sizeof(conn->ssl[sockindex]));
-#else
-    return CURLE_NOT_BUILT_IN;
-#endif
+    memset(pbdata, 0, Curl_ssl->sizeof_ssl_backend_data);
+
+    conn->ssl[sockindex].backend = pbdata;
   }
   return CURLE_OK;
 }
@@ -233,7 +245,7 @@ Curl_ssl_connect(struct connectdata *conn, int sockindex)
   conn->ssl[sockindex].use = TRUE;
   conn->ssl[sockindex].state = ssl_connection_negotiating;
 
-  result = curlssl_connect(conn, sockindex);
+  result = Curl_ssl->connect(conn, sockindex);
 
   if(!result)
     Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
@@ -257,12 +269,7 @@ Curl_ssl_connect_nonblocking(struct connectdata *conn, int sockindex,
 
   /* mark this is being ssl requested from here on. */
   conn->ssl[sockindex].use = TRUE;
-#ifdef curlssl_connect_nonblocking
-  result = curlssl_connect_nonblocking(conn, sockindex, done);
-#else
-  *done = TRUE; /* fallback to BLOCKING */
-  result = curlssl_connect(conn, sockindex);
-#endif /* non-blocking connect support */
+  result = Curl_ssl->connect_nonblocking(conn, sockindex, done);
   if(!result && *done)
     Curl_pgrsTime(conn->data, TIMER_APPCONNECT); /* SSL is connected */
   return result;
@@ -361,7 +368,7 @@ void Curl_ssl_kill_session(struct curl_ssl_session *session)
     /* defensive check */
 
     /* free the ID the SSL-layer specific way */
-    curlssl_session_free(session->sessionid);
+    Curl_ssl->session_free(session->sessionid);
 
     session->sessionid = NULL;
     session->age = 0; /* fresh */
@@ -379,7 +386,7 @@ void Curl_ssl_kill_session(struct curl_ssl_session *session)
 void Curl_ssl_delsessionid(struct connectdata *conn, void *ssl_sessionid)
 {
   size_t i;
-  struct Curl_easy *data=conn->data;
+  struct Curl_easy *data = conn->data;
 
   for(i = 0; i < data->set.general_ssl.max_ssl_sessions; i++) {
     struct curl_ssl_session *check = &data->state.session[i];
@@ -403,9 +410,9 @@ CURLcode Curl_ssl_addsessionid(struct connectdata *conn,
                                int sockindex)
 {
   size_t i;
-  struct Curl_easy *data=conn->data; /* the mother of all structs */
+  struct Curl_easy *data = conn->data; /* the mother of all structs */
   struct curl_ssl_session *store = &data->state.session[0];
-  long oldest_age=data->state.session[0].age; /* zero if unused */
+  long oldest_age = data->state.session[0].age; /* zero if unused */
   char *clone_host;
   char *clone_conn_to_host;
   int conn_to_port;
@@ -499,7 +506,7 @@ void Curl_ssl_close_all(struct Curl_easy *data)
     Curl_safefree(data->state.session);
   }
 
-  curlssl_close_all(data);
+  Curl_ssl->close_all(data);
 }
 
 #if defined(USE_OPENSSL) || defined(USE_GNUTLS) || defined(USE_SCHANNEL) || \
@@ -542,12 +549,12 @@ int Curl_ssl_getsock(struct connectdata *conn,
 void Curl_ssl_close(struct connectdata *conn, int sockindex)
 {
   DEBUGASSERT((sockindex <= 1) && (sockindex >= -1));
-  curlssl_close(conn, sockindex);
+  Curl_ssl->close(conn, sockindex);
 }
 
 CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
 {
-  if(curlssl_shutdown(conn, sockindex))
+  if(Curl_ssl->shutdown(conn, sockindex))
     return CURLE_SSL_SHUTDOWN_FAILED;
 
   conn->ssl[sockindex].use = FALSE; /* get back to ordinary socket usage */
@@ -563,20 +570,20 @@ CURLcode Curl_ssl_shutdown(struct connectdata *conn, int sockindex)
  */
 CURLcode Curl_ssl_set_engine(struct Curl_easy *data, const char *engine)
 {
-  return curlssl_set_engine(data, engine);
+  return Curl_ssl->set_engine(data, engine);
 }
 
 /* Selects the default SSL crypto engine
  */
 CURLcode Curl_ssl_set_engine_default(struct Curl_easy *data)
 {
-  return curlssl_set_engine_default(data);
+  return Curl_ssl->set_engine_default(data);
 }
 
 /* Return list of OpenSSL crypto engine names. */
 struct curl_slist *Curl_ssl_engines_list(struct Curl_easy *data)
 {
-  return curlssl_engines_list(data);
+  return Curl_ssl->engines_list(data);
 }
 
 /*
@@ -602,9 +609,15 @@ CURLcode Curl_ssl_initsessions(struct Curl_easy *data, size_t amount)
   return CURLE_OK;
 }
 
+static size_t Curl_multissl_version(char *buffer, size_t size);
+
 size_t Curl_ssl_version(char *buffer, size_t size)
 {
-  return curlssl_version(buffer, size);
+#ifdef CURL_WITH_MULTI_SSL
+  return Curl_multissl_version(buffer, size);
+#else
+  return Curl_ssl->version(buffer, size);
+#endif
 }
 
 /*
@@ -617,13 +630,13 @@ size_t Curl_ssl_version(char *buffer, size_t size)
  */
 int Curl_ssl_check_cxn(struct connectdata *conn)
 {
-  return curlssl_check_cxn(conn);
+  return Curl_ssl->check_cxn(conn);
 }
 
 bool Curl_ssl_data_pending(const struct connectdata *conn,
                            int connindex)
 {
-  return curlssl_data_pending(conn, connindex);
+  return Curl_ssl->data_pending(conn, connindex);
 }
 
 void Curl_ssl_free_certinfo(struct Curl_easy *data)
@@ -633,7 +646,7 @@ void Curl_ssl_free_certinfo(struct Curl_easy *data)
 
   if(ci->num_of_certs) {
     /* free all individual lists used */
-    for(i=0; i<ci->num_of_certs; i++) {
+    for(i = 0; i<ci->num_of_certs; i++) {
       curl_slist_free_all(ci->certinfo[i]);
       ci->certinfo[i] = NULL;
     }
@@ -687,7 +700,7 @@ CURLcode Curl_ssl_push_certinfo_len(struct Curl_easy *data,
   snprintf(output, outlen, "%s:", label);
 
   /* memcpy the value (it might not be zero terminated) */
-  memcpy(&output[labellen+1], value, valuelen);
+  memcpy(&output[labellen + 1], value, valuelen);
 
   /* zero terminate the output */
   output[labellen + 1 + valuelen] = 0;
@@ -721,7 +734,7 @@ CURLcode Curl_ssl_random(struct Curl_easy *data,
                          unsigned char *entropy,
                          size_t length)
 {
-  return curlssl_random(data, entropy, length);
+  return Curl_ssl->random(data, entropy, length);
 }
 
 /*
@@ -796,12 +809,10 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
   size_t size, pem_len;
   CURLcode pem_read;
   CURLcode result = CURLE_SSL_PINNEDPUBKEYNOTMATCH;
-#ifdef curlssl_sha256sum
   CURLcode encode;
   size_t encodedlen, pinkeylen;
   char *encoded, *pinkeycopy, *begin_pos, *end_pos;
   unsigned char *sha256sumdigest = NULL;
-#endif
 
   /* if a path wasn't specified, don't pin */
   if(!pinnedpubkey)
@@ -811,15 +822,20 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
 
   /* only do this if pinnedpubkey starts with "sha256//", length 8 */
   if(strncmp(pinnedpubkey, "sha256//", 8) == 0) {
-#ifdef curlssl_sha256sum
+    if(!Curl_ssl->sha256sum) {
+      /* without sha256 support, this cannot match */
+      return result;
+    }
+
     /* compute sha256sum of public key */
-    sha256sumdigest = malloc(SHA256_DIGEST_LENGTH);
+    sha256sumdigest = malloc(CURL_SHA256_DIGEST_LENGTH);
     if(!sha256sumdigest)
       return CURLE_OUT_OF_MEMORY;
-    curlssl_sha256sum(pubkey, pubkeylen,
-                      sha256sumdigest, SHA256_DIGEST_LENGTH);
+    Curl_ssl->sha256sum(pubkey, pubkeylen,
+                        sha256sumdigest, CURL_SHA256_DIGEST_LENGTH);
     encode = Curl_base64_encode(data, (char *)sha256sumdigest,
-                                SHA256_DIGEST_LENGTH, &encoded, &encodedlen);
+                                CURL_SHA256_DIGEST_LENGTH, &encoded,
+                                &encodedlen);
     Curl_safefree(sha256sumdigest);
 
     if(encode)
@@ -864,10 +880,6 @@ CURLcode Curl_pin_peer_pubkey(struct Curl_easy *data,
     } while(end_pos && begin_pos);
     Curl_safefree(encoded);
     Curl_safefree(pinkeycopy);
-#else
-    /* without sha256 support, this cannot match */
-    (void)data;
-#endif
     return result;
   }
 
@@ -943,20 +955,7 @@ CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
                          unsigned char *md5sum, /* output */
                          size_t md5len)
 {
-#ifdef curlssl_md5sum
-  curlssl_md5sum(tmp, tmplen, md5sum, md5len);
-#else
-  MD5_context *MD5pw;
-
-  (void) md5len;
-
-  MD5pw = Curl_MD5_init(Curl_DIGEST_MD5);
-  if(!MD5pw)
-    return CURLE_OUT_OF_MEMORY;
-  Curl_MD5_update(MD5pw, tmp, curlx_uztoui(tmplen));
-  Curl_MD5_final(MD5pw, md5sum);
-#endif
-  return CURLE_OK;
+  return Curl_ssl->md5sum(tmp, tmplen, md5sum, md5len);
 }
 #endif
 
@@ -965,11 +964,7 @@ CURLcode Curl_ssl_md5sum(unsigned char *tmp, /* input */
  */
 bool Curl_ssl_cert_status_request(void)
 {
-#ifdef curlssl_cert_status_request
-  return curlssl_cert_status_request();
-#else
-  return FALSE;
-#endif
+  return Curl_ssl->cert_status_request();
 }
 
 /*
@@ -977,11 +972,341 @@ bool Curl_ssl_cert_status_request(void)
  */
 bool Curl_ssl_false_start(void)
 {
-#ifdef curlssl_false_start
-  return curlssl_false_start();
-#else
+  return Curl_ssl->false_start();
+}
+
+/*
+ * Default implementations for unsupported functions.
+ */
+
+int Curl_none_init(void)
+{
+  return 1;
+}
+
+void Curl_none_cleanup(void)
+{ }
+
+int Curl_none_shutdown(struct connectdata *conn UNUSED_PARAM,
+                       int sockindex UNUSED_PARAM)
+{
+  (void)conn;
+  (void)sockindex;
+  return 0;
+}
+
+int Curl_none_check_cxn(struct connectdata *conn UNUSED_PARAM)
+{
+  (void)conn;
+  return -1;
+}
+
+CURLcode Curl_none_random(struct Curl_easy *data UNUSED_PARAM,
+                          unsigned char *entropy UNUSED_PARAM,
+                          size_t length UNUSED_PARAM)
+{
+  (void)data;
+  (void)entropy;
+  (void)length;
+  return CURLE_NOT_BUILT_IN;
+}
+
+void Curl_none_close_all(struct Curl_easy *data UNUSED_PARAM)
+{
+  (void)data;
+}
+
+void Curl_none_session_free(void *ptr UNUSED_PARAM)
+{
+  (void)ptr;
+}
+
+bool Curl_none_data_pending(const struct connectdata *conn UNUSED_PARAM,
+                            int connindex UNUSED_PARAM)
+{
+  (void)conn;
+  (void)connindex;
+  return 0;
+}
+
+bool Curl_none_cert_status_request(void)
+{
   return FALSE;
+}
+
+CURLcode Curl_none_set_engine(struct Curl_easy *data UNUSED_PARAM,
+                              const char *engine UNUSED_PARAM)
+{
+  (void)data;
+  (void)engine;
+  return CURLE_NOT_BUILT_IN;
+}
+
+CURLcode Curl_none_set_engine_default(struct Curl_easy *data UNUSED_PARAM)
+{
+  (void)data;
+  return CURLE_NOT_BUILT_IN;
+}
+
+struct curl_slist *Curl_none_engines_list(struct Curl_easy *data UNUSED_PARAM)
+{
+  (void)data;
+  return (struct curl_slist *)NULL;
+}
+
+bool Curl_none_false_start(void)
+{
+  return FALSE;
+}
+
+CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
+                          unsigned char *md5sum, size_t md5len UNUSED_PARAM)
+{
+  MD5_context *MD5pw;
+
+  (void)md5len;
+
+  MD5pw = Curl_MD5_init(Curl_DIGEST_MD5);
+  if(!MD5pw)
+    return CURLE_OUT_OF_MEMORY;
+  Curl_MD5_update(MD5pw, input, curlx_uztoui(inputlen));
+  Curl_MD5_final(MD5pw, md5sum);
+  return CURLE_OK;
+}
+
+static int Curl_multissl_init(void)
+{
+  if(multissl_init(NULL))
+    return 1;
+  return Curl_ssl->init();
+}
+
+static CURLcode Curl_multissl_connect(struct connectdata *conn, int sockindex)
+{
+  if(multissl_init(NULL))
+    return CURLE_FAILED_INIT;
+  return Curl_ssl->connect(conn, sockindex);
+}
+
+static CURLcode Curl_multissl_connect_nonblocking(struct connectdata *conn,
+                                                  int sockindex, bool *done)
+{
+  if(multissl_init(NULL))
+    return CURLE_FAILED_INIT;
+  return Curl_ssl->connect_nonblocking(conn, sockindex, done);
+}
+
+static void *Curl_multissl_get_internals(struct ssl_connect_data *connssl,
+                                         CURLINFO info)
+{
+  if(multissl_init(NULL))
+    return NULL;
+  return Curl_ssl->get_internals(connssl, info);
+}
+
+static void Curl_multissl_close(struct connectdata *conn, int sockindex)
+{
+  if(multissl_init(NULL))
+    return;
+  Curl_ssl->close(conn, sockindex);
+}
+
+static const struct Curl_ssl Curl_ssl_multi = {
+  { CURLSSLBACKEND_NONE, "multi" },  /* info */
+
+  0, /* have_ca_path */
+  0, /* have_certinfo */
+  0, /* have_pinnedpubkey */
+  0, /* have_ssl_ctx */
+  0, /* support_https_proxy */
+
+  (size_t)-1, /* something insanely large to be on the safe side */
+
+  Curl_multissl_init,                /* init */
+  Curl_none_cleanup,                 /* cleanup */
+  Curl_multissl_version,             /* version */
+  Curl_none_check_cxn,               /* check_cxn */
+  Curl_none_shutdown,                /* shutdown */
+  Curl_none_data_pending,            /* data_pending */
+  Curl_none_random,                  /* random */
+  Curl_none_cert_status_request,     /* cert_status_request */
+  Curl_multissl_connect,             /* connect */
+  Curl_multissl_connect_nonblocking, /* connect_nonblocking */
+  Curl_multissl_get_internals,       /* get_internals */
+  Curl_multissl_close,               /* close */
+  Curl_none_close_all,               /* close_all */
+  Curl_none_session_free,            /* session_free */
+  Curl_none_set_engine,              /* set_engine */
+  Curl_none_set_engine_default,      /* set_engine_default */
+  Curl_none_engines_list,            /* engines_list */
+  Curl_none_false_start,             /* false_start */
+  Curl_none_md5sum,                  /* md5sum */
+  NULL                               /* sha256sum */
+};
+
+const struct Curl_ssl *Curl_ssl =
+#if defined(CURL_WITH_MULTI_SSL)
+  &Curl_ssl_multi;
+#elif defined(USE_AXTLS)
+  &Curl_ssl_axtls;
+#elif defined(USE_CYASSL)
+  &Curl_ssl_cyassl;
+#elif defined(USE_DARWINSSL)
+  &Curl_ssl_darwinssl;
+#elif defined(USE_GNUTLS)
+  &Curl_ssl_gnutls;
+#elif defined(USE_GSKIT)
+  &Curl_ssl_gskit;
+#elif defined(USE_MBEDTLS)
+  &Curl_ssl_mbedtls;
+#elif defined(USE_NSS)
+  &Curl_ssl_nss;
+#elif defined(USE_OPENSSL)
+  &Curl_ssl_openssl;
+#elif defined(USE_POLARSSL)
+  &Curl_ssl_polarssl;
+#elif defined(USE_SCHANNEL)
+  &Curl_ssl_schannel;
+#else
+#error "Missing struct Curl_ssl for selected SSL backend"
+#endif
+
+static const struct Curl_ssl *available_backends[] = {
+#if defined(USE_AXTLS)
+  &Curl_ssl_axtls,
+#endif
+#if defined(USE_CYASSL)
+  &Curl_ssl_cyassl,
 #endif
+#if defined(USE_DARWINSSL)
+  &Curl_ssl_darwinssl,
+#endif
+#if defined(USE_GNUTLS)
+  &Curl_ssl_gnutls,
+#endif
+#if defined(USE_GSKIT)
+  &Curl_ssl_gskit,
+#endif
+#if defined(USE_MBEDTLS)
+  &Curl_ssl_mbedtls,
+#endif
+#if defined(USE_NSS)
+  &Curl_ssl_nss,
+#endif
+#if defined(USE_OPENSSL)
+  &Curl_ssl_openssl,
+#endif
+#if defined(USE_POLARSSL)
+  &Curl_ssl_polarssl,
+#endif
+#if defined(USE_SCHANNEL)
+  &Curl_ssl_schannel,
+#endif
+  NULL
+};
+
+static size_t Curl_multissl_version(char *buffer, size_t size)
+{
+  static const struct Curl_ssl *selected;
+  static char backends[200];
+  static size_t total;
+  const struct Curl_ssl *current;
+
+  current = Curl_ssl == &Curl_ssl_multi ? available_backends[0] : Curl_ssl;
+
+  if(current != selected) {
+    char *p = backends;
+    int i;
+
+    selected = current;
+
+    for(i = 0; available_backends[i]; i++) {
+      if(i)
+        *(p++) = ' ';
+      if(selected != available_backends[i])
+        *(p++) = '(';
+      p += available_backends[i]->version(p, backends + sizeof(backends) - p);
+      if(selected != available_backends[i])
+        *(p++) = ')';
+    }
+    *p = '\0';
+    total = p - backends;
+  }
+
+  if(size < total)
+    memcpy(buffer, backends, total + 1);
+  else {
+    memcpy(buffer, backends, size - 1);
+    buffer[size - 1] = '\0';
+  }
+
+  return total;
+}
+
+static int multissl_init(const struct Curl_ssl *backend)
+{
+  const char *env;
+  int i;
+
+  if(Curl_ssl != &Curl_ssl_multi)
+    return 1;
+
+  if(backend) {
+    Curl_ssl = backend;
+    return 0;
+  }
+
+  if(!available_backends[0])
+    return 1;
+
+  env = getenv("CURL_SSL_BACKEND");
+#ifdef CURL_DEFAULT_SSL_BACKEND
+  if(!env)
+    env = CURL_DEFAULT_SSL_BACKEND;
+#endif
+  if(env) {
+    for(i = 0; available_backends[i]; i++) {
+      if(strcasecompare(env, available_backends[i]->info.name)) {
+        Curl_ssl = available_backends[i];
+        return 0;
+      }
+    }
+  }
+
+  /* Fall back to first available backend */
+  Curl_ssl = available_backends[0];
+  return 0;
+}
+
+CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
+                              const curl_ssl_backend ***avail)
+{
+  int i;
+
+  if(Curl_ssl != &Curl_ssl_multi)
+    return id == Curl_ssl->info.id ? CURLSSLSET_OK : CURLSSLSET_TOO_LATE;
+
+  for(i = 0; available_backends[i]; i++) {
+    if(available_backends[i]->info.id == id ||
+       (name && strcasecompare(available_backends[i]->info.name, name))) {
+      multissl_init(available_backends[i]);
+      return CURLSSLSET_OK;
+    }
+  }
+
+  if(avail)
+    *avail = (const curl_ssl_backend **)&available_backends;
+  return CURLSSLSET_UNKNOWN_BACKEND;
+}
+
+#else /* USE_SSL */
+CURLsslset curl_global_sslset(curl_sslbackend id, const char *name,
+                              const curl_ssl_backend ***avail)
+{
+  (void)id;
+  (void)name;
+  (void)avail;
+  return CURLSSLSET_NO_BACKENDS;
 }
 
-#endif /* USE_SSL */
+#endif /* !USE_SSL */
diff --git a/lib/vtls/vtls.h b/lib/vtls/vtls.h
index 2aabeda..f1a11ea 100644
--- a/lib/vtls/vtls.h
+++ b/lib/vtls/vtls.h
@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -23,6 +23,80 @@
  ***************************************************************************/
 #include "curl_setup.h"
 
+struct connectdata;
+struct ssl_connect_data;
+
+struct Curl_ssl {
+  /*
+   * This *must* be the first entry to allow returning the list of available
+   * backends in curl_global_sslset().
+   */
+  curl_ssl_backend info;
+
+  unsigned have_ca_path:1;      /* supports CAPATH */
+  unsigned have_certinfo:1;     /* supports CURLOPT_CERTINFO */
+  unsigned have_pinnedpubkey:1; /* supports CURLOPT_PINNEDPUBLICKEY */
+  unsigned have_ssl_ctx:1;      /* supports CURLOPT_SSL_CTX_* */
+
+  unsigned support_https_proxy:1; /* supports access via HTTPS proxies */
+
+  size_t sizeof_ssl_backend_data;
+
+  int (*init)(void);
+  void (*cleanup)(void);
+
+  size_t (*version)(char *buffer, size_t size);
+  int (*check_cxn)(struct connectdata *cxn);
+  int (*shutdown)(struct connectdata *conn, int sockindex);
+  bool (*data_pending)(const struct connectdata *conn,
+                       int connindex);
+
+  /* return 0 if a find random is filled in */
+  CURLcode (*random)(struct Curl_easy *data, unsigned char *entropy,
+                     size_t length);
+  bool (*cert_status_request)(void);
+
+  CURLcode (*connect)(struct connectdata *conn, int sockindex);
+  CURLcode (*connect_nonblocking)(struct connectdata *conn, int sockindex,
+                                  bool *done);
+  void *(*get_internals)(struct ssl_connect_data *connssl, CURLINFO info);
+  void (*close)(struct connectdata *conn, int sockindex);
+  void (*close_all)(struct Curl_easy *data);
+  void (*session_free)(void *ptr);
+
+  CURLcode (*set_engine)(struct Curl_easy *data, const char *engine);
+  CURLcode (*set_engine_default)(struct Curl_easy *data);
+  struct curl_slist *(*engines_list)(struct Curl_easy *data);
+
+  bool (*false_start)(void);
+
+  CURLcode (*md5sum)(unsigned char *input, size_t inputlen,
+                     unsigned char *md5sum, size_t md5sumlen);
+  void (*sha256sum)(const unsigned char *input, size_t inputlen,
+                    unsigned char *sha256sum, size_t sha256sumlen);
+};
+
+#ifdef USE_SSL
+extern const struct Curl_ssl *Curl_ssl;
+#endif
+
+int Curl_none_init(void);
+void Curl_none_cleanup(void);
+int Curl_none_shutdown(struct connectdata *conn, int sockindex);
+int Curl_none_check_cxn(struct connectdata *conn);
+CURLcode Curl_none_random(struct Curl_easy *data, unsigned char *entropy,
+                          size_t length);
+void Curl_none_close_all(struct Curl_easy *data);
+void Curl_none_session_free(void *ptr);
+bool Curl_none_data_pending(const struct connectdata *conn, int connindex);
+bool Curl_none_cert_status_request(void);
+CURLcode Curl_none_set_engine(struct Curl_easy *data, const char *engine);
+CURLcode Curl_none_set_engine_default(struct Curl_easy *data);
+struct curl_slist *Curl_none_engines_list(struct Curl_easy *data);
+bool Curl_none_false_start(void);
+CURLcode Curl_none_md5sum(unsigned char *input, size_t inputlen,
+                          unsigned char *md5sum, size_t md5len);
+
 #include "openssl.h"        /* OpenSSL versions */
 #include "gtls.h"           /* GnuTLS versions */
 #include "nssg.h"           /* NSS versions */
@@ -42,8 +116,8 @@
 #define MD5_DIGEST_LENGTH 16 /* fixed size */
 #endif
 
-#ifndef SHA256_DIGEST_LENGTH
-#define SHA256_DIGEST_LENGTH 32 /* fixed size */
+#ifndef CURL_SHA256_DIGEST_LENGTH
+#define CURL_SHA256_DIGEST_LENGTH 32 /* fixed size */
 #endif
 
 /* see https://tools.ietf.org/html/draft-ietf-tls-applayerprotoneg-04 */
@@ -172,8 +246,6 @@ bool Curl_ssl_false_start(void);
 #define SSL_SHUTDOWN_TIMEOUT 10000 /* ms */
 
 #else
-/* Set the API backend definition to none */
-#define CURL_SSL_BACKEND CURLSSLBACKEND_NONE
 
 /* When SSL support is not present, just define away these function calls */
 #define Curl_ssl_init() 1
diff --git a/lib/warnless.c b/lib/warnless.c
index fb085c8..05d9038 100644
--- a/lib/warnless.c
+++ b/lib/warnless.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel at haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel at haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -69,36 +69,36 @@
 #  error "SIZEOF_INT not defined"
 #endif
 
-#if (CURL_SIZEOF_LONG == 2)
+#if (SIZEOF_LONG == 2)
 #  define CURL_MASK_SLONG  0x7FFFL
 #  define CURL_MASK_ULONG  0xFFFFUL
-#elif (CURL_SIZEOF_LONG == 4)
+#elif (SIZEOF_LONG == 4)
 #  define CURL_MASK_SLONG  0x7FFFFFFFL
 #  define CURL_MASK_ULONG  0xFFFFFFFFUL
-#elif (CURL_SIZEOF_LONG == 8)
+#elif (SIZEOF_LONG == 8)
 #  define CURL_MASK_SLONG  0x7FFFFFFFFFFFFFFFL
 #  define CURL_MASK_ULONG  0xFFFFFFFFFFFFFFFFUL
-#elif (CURL_SIZEOF_LONG == 16)
+#elif (SIZEOF_LONG == 16)
 #  define CURL_MASK_SLONG  0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFL
 #  define CURL_MASK_ULONG  0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFUL
 #else
-#  error "CURL_SIZEOF_LONG not defined"
+#  error "SIZEOF_LONG not defined"
 #endif
 
-#if (CURL_SIZEOF_CURL_OFF_T == 2)
+#if (SIZEOF_CURL_OFF_T == 2)
 #  define CURL_MASK_SCOFFT  CURL_OFF_T_C(0x7FFF)
 #  define CURL_MASK_UCOFFT  CURL_OFF_TU_C(0xFFFF)
-#elif (CURL_SIZEOF_CURL_OFF_T == 4)
+#elif (SIZEOF_CURL_OFF_T == 4)
 #  define CURL_MASK_SCOFFT  CURL_OFF_T_C(0x7FFFFFFF)
 #  define CURL_MASK_UCOFFT  CURL_OFF_TU_C(0xFFFFFFFF)
-#elif (CURL_SIZEOF_CURL_OFF_T == 8)
+#elif (SIZEOF_CURL_OFF_T == 8)
 #  define CURL_MASK_SCOFFT  CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
 #  define CURL_MASK_UCOFFT  CURL_OFF_TU_C(0xFFFFFFFFFFFFFFFF)
-#elif (CURL_SIZEOF_CURL_OFF_T == 16)
+#elif (SIZEOF_CURL_OFF_T == 16)
 #  define CURL_MASK_SCOFFT  CURL_OFF_T_C(0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
 #  define CURL_MASK_UCOFFT  CURL_OFF_TU_C(0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
 #else
-#  error "CURL_SIZEOF_CURL_OFF_T not defined"
+#  error "SIZEOF_CURL_OFF_T not defined"
 #endif
 
 #if (SIZEOF_SIZE_T == SIZEOF_SHORT)
@@ -107,10 +107,10 @@
 #elif (SIZEOF_SIZE_T == SIZEOF_INT)
 #  define CURL_MASK_SSIZE_T  CURL_MASK_SINT
 #  define CURL_MASK_USIZE_T  CURL_MASK_UINT
-#elif (SIZEOF_SIZE_T == CURL_SIZEOF_LONG)
+#elif (SIZEOF_SIZE_T == SIZEOF_LONG)
 #  define CURL_MASK_SSIZE_T  CURL_MASK_SLONG
 #  define CURL_MASK_USIZE_T  CURL_MASK_ULONG
-#elif (SIZEOF_SIZE_T == CURL_SIZEOF_CURL_OFF_T)
+#elif (SIZEOF_SIZE_T == SIZEOF_CURL_OFF_T)
 #  define CURL_MASK_SSIZE_T  CURL_MASK_SCOFFT
 #  define CURL_MASK_USIZE_T  CURL_MASK_UCOFFT
 #else
@@ -226,7 +226,7 @@ unsigned long curlx_uztoul(size_t uznum)
 # pragma warning(disable:810) /* conversion may lose significant bits */
 #endif
 
-#if (CURL_SIZEOF_LONG < SIZEOF_SIZE_T)
+#if (SIZEOF_LONG < SIZEOF_SIZE_T)
   DEBUGASSERT(uznum <= (size_t) CURL_MASK_ULONG);
 #endif
   return (unsigned long)(uznum & (size_t) CURL_MASK_ULONG);
@@ -269,7 +269,7 @@ int curlx_sltosi(long slnum)
 #endif
 
   DEBUGASSERT(slnum >= 0);
-#if (SIZEOF_INT < CURL_SIZEOF_LONG)
+#if (SIZEOF_INT < SIZEOF_LONG)
   DEBUGASSERT((unsigned long) slnum <= (unsigned long) CURL_MASK_SINT);
 #endif
   return (int)(slnum & (long) CURL_MASK_SINT);
@@ -291,7 +291,7 @@ unsigned int curlx_sltoui(long slnum)
 #endif
 
   DEBUGASSERT(slnum >= 0);
-#if (SIZEOF_INT < CURL_SIZEOF_LONG)
+#if (SIZEOF_INT < SIZEOF_LONG)
   DEBUGASSERT((unsigned long) slnum <= (unsigned long) CURL_MASK_UINT);
 #endif
   return (unsigned int)(slnum & (long) CURL_MASK_UINT);

https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=2fad0e20b6b2b4c3cfc177267cf9689658f50c23
commit 2fad0e20b6b2b4c3cfc177267cf9689658f50c23
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Wed Oct 4 07:11:43 2017 -0400
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 11:14:42 2017 -0400

    curl: Update script to get curl 7.56.0

diff --git a/Utilities/Scripts/update-curl.bash b/Utilities/Scripts/update-curl.bash
index 465841a..b244827 100755
--- a/Utilities/Scripts/update-curl.bash
+++ b/Utilities/Scripts/update-curl.bash
@@ -8,14 +8,13 @@ readonly name="curl"
 readonly ownership="Curl Upstream <curl-library at cool.haxx.se>"
 readonly subtree="Utilities/cmcurl"
 readonly repo="https://github.com/curl/curl.git"
-readonly tag="curl-7_54_1"
+readonly tag="curl-7_56_0"
 readonly shortlog=false
 readonly paths="
   CMake/*
   CMakeLists.txt
   COPYING
   include/curl/*.h
-  include/curl/curlbuild.h.cmake
   lib/*.c
   lib/*.h
   lib/CMakeLists.txt
@@ -32,6 +31,15 @@ extract_source () {
     git_archive
     pushd "${extractdir}/${name}-reduced"
     rm lib/config-*.h
+    chmod a-x lib/connect.c
+    for f in \
+      lib/cookie.c \
+      lib/krb5.c \
+      lib/security.c \
+      ; do
+        iconv -f LATIN1 -t UTF8 $f -o $f.utf-8
+        mv $f.utf-8 $f
+    done
     echo "* -whitespace" > .gitattributes
     popd
 }

https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=0be7d61abf970186b3a83cc6a2aebd3b208b0618
commit 0be7d61abf970186b3a83cc6a2aebd3b208b0618
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Tue Oct 10 09:37:08 2017 -0400
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 09:37:49 2017 -0400

    Tests: Teach RunCMake to ignore clang unused sanitizer flag warnings
    
    These can show up in Release builds of CMake because some tests still
    build Debug.

diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index f54ef69..4fd816e 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -103,6 +103,7 @@ function(run_cmake test)
     "(^|\n)((==[0-9]+=="
     "|BullseyeCoverage"
     "|[a-z]+\\([0-9]+\\) malloc:"
+    "|clang[^:]*: warning: the object size sanitizer has no effect at -O0, but is explicitly enabled:"
     "|Error kstat returned"
     "|Hit xcodebuild bug"
     "|[^\n]*is a member of multiple groups"

https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=3f567a98470ffa812783a749f052ee1e6ae1d202
commit 3f567a98470ffa812783a749f052ee1e6ae1d202
Author:     Brad King <brad.king at kitware.com>
AuthorDate: Tue Oct 10 09:35:31 2017 -0400
Commit:     Brad King <brad.king at kitware.com>
CommitDate: Tue Oct 10 09:35:31 2017 -0400

    Tests: Refactor RunCMake output line ignore regex construction
    
    Avoid one giant line.

diff --git a/Tests/RunCMake/RunCMake.cmake b/Tests/RunCMake/RunCMake.cmake
index 26312c4..f54ef69 100644
--- a/Tests/RunCMake/RunCMake.cmake
+++ b/Tests/RunCMake/RunCMake.cmake
@@ -99,9 +99,20 @@ function(run_cmake test)
   if(NOT "${actual_result}" MATCHES "${expect_result}")
     string(APPEND msg "Result is [${actual_result}], not [${expect_result}].\n")
   endif()
+  string(CONCAT ignore_line_regex
+    "(^|\n)((==[0-9]+=="
+    "|BullseyeCoverage"
+    "|[a-z]+\\([0-9]+\\) malloc:"
+    "|Error kstat returned"
+    "|Hit xcodebuild bug"
+    "|[^\n]*is a member of multiple groups"
+    "|[^\n]*from Time Machine by path"
+    "|[^\n]*Bullseye Testing Technology"
+    ")[^\n]*\n)+"
+    )
   foreach(o out err)
     string(REGEX REPLACE "\r\n" "\n" actual_std${o} "${actual_std${o}}")
-    string(REGEX REPLACE "(^|\n)((==[0-9]+==|BullseyeCoverage|[a-z]+\\([0-9]+\\) malloc:|Error kstat returned|Hit xcodebuild bug|[^\n]*is a member of multiple groups|[^\n]*from Time Machine by path|[^\n]*Bullseye Testing Technology)[^\n]*\n)+" "\\1" actual_std${o} "${actual_std${o}}")
+    string(REGEX REPLACE "${ignore_line_regex}" "\\1" actual_std${o} "${actual_std${o}}")
     string(REGEX REPLACE "\n+$" "" actual_std${o} "${actual_std${o}}")
     set(expect_${o} "")
     if(DEFINED expect_std${o})

-----------------------------------------------------------------------

Summary of changes:
 Tests/RunCMake/RunCMake.cmake                   |   14 +-
 Utilities/Scripts/update-curl.bash              |   12 +-
 Utilities/cmcurl/CMake/Macros.cmake             |   29 +
 Utilities/cmcurl/CMake/OtherTests.cmake         |   12 +-
 Utilities/cmcurl/CMake/cmake_uninstall.cmake.in |   26 +
 Utilities/cmcurl/CMakeLists.txt                 |  189 ++-
 Utilities/cmcurl/include/curl/curl.h            |  247 ++-
 Utilities/cmcurl/include/curl/curlbuild.h.cmake |  218 ---
 Utilities/cmcurl/include/curl/curlrules.h       |  239 ---
 Utilities/cmcurl/include/curl/curlver.h         |    8 +-
 Utilities/cmcurl/include/curl/multi.h           |    2 +-
 Utilities/cmcurl/include/curl/system.h          |  615 ++++----
 Utilities/cmcurl/include/curl/typecheck-gcc.h   |   21 +-
 Utilities/cmcurl/lib/CMakeLists.txt             |   11 +-
 Utilities/cmcurl/lib/Makefile.inc               |    5 +-
 Utilities/cmcurl/lib/asyn-ares.c                |    8 +-
 Utilities/cmcurl/lib/asyn-thread.c              |   55 +-
 Utilities/cmcurl/lib/conncache.h                |    2 +-
 Utilities/cmcurl/lib/connect.c                  |   82 +-
 Utilities/cmcurl/lib/connect.h                  |    4 +-
 Utilities/cmcurl/lib/content_encoding.c         |    6 +-
 Utilities/cmcurl/lib/cookie.c                   |  146 +-
 Utilities/cmcurl/lib/cookie.h                   |   11 +-
 Utilities/cmcurl/lib/curl_addrinfo.c            |    6 +-
 Utilities/cmcurl/lib/curl_config.h.cmake        |   12 +-
 Utilities/cmcurl/lib/curl_fnmatch.c             |   12 +-
 Utilities/cmcurl/lib/curl_ntlm_core.c           |   92 +-
 Utilities/cmcurl/lib/curl_ntlm_core.h           |   14 +-
 Utilities/cmcurl/lib/curl_ntlm_wb.c             |   26 +-
 Utilities/cmcurl/lib/curl_rtmp.c                |    8 +-
 Utilities/cmcurl/lib/curl_sasl.c                |    6 +-
 Utilities/cmcurl/lib/curl_setup.h               |   42 +-
 Utilities/cmcurl/lib/curl_setup_once.h          |   14 -
 Utilities/cmcurl/lib/curl_threads.c             |   15 +-
 Utilities/cmcurl/lib/dict.c                     |   15 +-
 Utilities/cmcurl/lib/dotdot.c                   |   30 +-
 Utilities/cmcurl/lib/easy.c                     |   26 +-
 Utilities/cmcurl/lib/escape.c                   |   26 +-
 Utilities/cmcurl/lib/file.c                     |   42 +-
 Utilities/cmcurl/lib/formdata.c                 |  887 ++---------
 Utilities/cmcurl/lib/formdata.h                 |   54 +-
 Utilities/cmcurl/lib/ftp.c                      |  278 ++--
 Utilities/cmcurl/lib/ftp.h                      |    4 +-
 Utilities/cmcurl/lib/ftplistparser.c            |   38 +-
 Utilities/cmcurl/lib/getinfo.c                  |   87 +-
 Utilities/cmcurl/lib/gopher.c                   |   11 +-
 Utilities/cmcurl/lib/hash.c                     |    4 +-
 Utilities/cmcurl/lib/hostcheck.c                |   14 +-
 Utilities/cmcurl/lib/hostip.c                   |   12 +-
 Utilities/cmcurl/lib/hostip4.c                  |    4 +-
 Utilities/cmcurl/lib/hostip6.c                  |    4 +-
 Utilities/cmcurl/lib/http.c                     |  444 +++---
 Utilities/cmcurl/lib/http.h                     |   17 +-
 Utilities/cmcurl/lib/http2.c                    |   65 +-
 Utilities/cmcurl/lib/http2.h                    |    7 +-
 Utilities/cmcurl/lib/http_chunks.c              |   26 +-
 Utilities/cmcurl/lib/http_ntlm.c                |   13 +-
 Utilities/cmcurl/lib/http_proxy.c               |  278 ++--
 Utilities/cmcurl/lib/http_proxy.h               |   10 +
 Utilities/cmcurl/lib/if2ip.c                    |   16 +-
 Utilities/cmcurl/lib/if2ip.h                    |    5 +-
 Utilities/cmcurl/lib/imap.c                     |  195 +--
 Utilities/cmcurl/lib/imap.h                     |    3 +-
 Utilities/cmcurl/lib/inet_ntop.c                |   14 +-
 Utilities/cmcurl/lib/inet_pton.c                |    6 +-
 Utilities/cmcurl/lib/inet_pton.h                |    5 +-
 Utilities/cmcurl/lib/krb5.c                     |    2 +-
 Utilities/cmcurl/lib/ldap.c                     |    9 +-
 Utilities/cmcurl/lib/memdebug.c                 |   23 +-
 Utilities/cmcurl/lib/mime.c                     | 1860 +++++++++++++++++++++++
 Utilities/cmcurl/lib/mime.h                     |  135 ++
 Utilities/cmcurl/lib/mprintf.c                  |   38 +-
 Utilities/cmcurl/lib/multi.c                    |  139 +-
 Utilities/cmcurl/lib/multihandle.h              |    2 +-
 Utilities/cmcurl/lib/netrc.c                    |   44 +-
 Utilities/cmcurl/lib/non-ascii.c                |  104 +-
 Utilities/cmcurl/lib/non-ascii.h                |    4 +-
 Utilities/cmcurl/lib/openldap.c                 |   14 +-
 Utilities/cmcurl/lib/parsedate.c                |   74 +-
 Utilities/cmcurl/lib/pingpong.c                 |   28 +-
 Utilities/cmcurl/lib/pingpong.h                 |    2 +-
 Utilities/cmcurl/lib/pipeline.c                 |   37 +-
 Utilities/cmcurl/lib/pop3.c                     |   79 +-
 Utilities/cmcurl/lib/progress.c                 |  132 +-
 Utilities/cmcurl/lib/progress.h                 |    8 +-
 Utilities/cmcurl/lib/rand.c                     |    2 +-
 Utilities/cmcurl/lib/rtsp.c                     |   43 +-
 Utilities/cmcurl/lib/rtsp.h                     |    2 -
 Utilities/cmcurl/lib/security.c                 |    4 +-
 Utilities/cmcurl/lib/select.c                   |   10 +-
 Utilities/cmcurl/lib/select.h                   |    5 +-
 Utilities/cmcurl/lib/sendf.c                    |   20 +-
 Utilities/cmcurl/lib/smb.c                      |   31 +-
 Utilities/cmcurl/lib/smtp.c                     |  118 +-
 Utilities/cmcurl/lib/socks.c                    |   88 +-
 Utilities/cmcurl/lib/socks_gssapi.c             |   59 +-
 Utilities/cmcurl/lib/socks_sspi.c               |   24 +-
 Utilities/cmcurl/lib/speedcheck.c               |    4 +-
 Utilities/cmcurl/lib/speedcheck.h               |    4 +-
 Utilities/cmcurl/lib/splay.c                    |   26 +-
 Utilities/cmcurl/lib/splay.h                    |   17 +-
 Utilities/cmcurl/lib/ssh.c                      |   58 +-
 Utilities/cmcurl/lib/strcase.c                  |   11 +-
 Utilities/cmcurl/lib/strdup.c                   |    6 +-
 Utilities/cmcurl/lib/strerror.c                 |   57 +-
 Utilities/cmcurl/lib/strtoofft.c                |   67 +-
 Utilities/cmcurl/lib/strtoofft.h                |   37 +-
 Utilities/cmcurl/lib/telnet.c                   |   48 +-
 Utilities/cmcurl/lib/tftp.c                     |   69 +-
 Utilities/cmcurl/lib/timeval.c                  |   71 +-
 Utilities/cmcurl/lib/timeval.h                  |   19 +-
 Utilities/cmcurl/lib/transfer.c                 |  215 ++-
 Utilities/cmcurl/lib/transfer.h                 |    5 +-
 Utilities/cmcurl/lib/url.c                      |  339 +++--
 Utilities/cmcurl/lib/urldata.h                  |  293 ++--
 Utilities/cmcurl/lib/vauth/digest_sspi.c        |   45 +-
 Utilities/cmcurl/lib/vauth/ntlm.c               |   16 +-
 Utilities/cmcurl/lib/vauth/ntlm_sspi.c          |    9 +-
 Utilities/cmcurl/lib/vauth/spnego_gssapi.c      |    4 +
 Utilities/cmcurl/lib/vauth/vauth.h              |    5 +-
 Utilities/cmcurl/lib/version.c                  |    8 +-
 Utilities/cmcurl/lib/vtls/axtls.c               |  190 ++-
 Utilities/cmcurl/lib/vtls/axtls.h               |   39 +-
 Utilities/cmcurl/lib/vtls/cyassl.c              |  223 ++-
 Utilities/cmcurl/lib/vtls/cyassl.h              |   63 +-
 Utilities/cmcurl/lib/vtls/darwinssl.c           |  469 +++---
 Utilities/cmcurl/lib/vtls/darwinssl.h           |   70 +-
 Utilities/cmcurl/lib/vtls/gskit.c               |  191 ++-
 Utilities/cmcurl/lib/vtls/gskit.h               |   38 +-
 Utilities/cmcurl/lib/vtls/gtls.c                |  233 +--
 Utilities/cmcurl/lib/vtls/gtls.h                |   64 +-
 Utilities/cmcurl/lib/vtls/mbedtls.c             |  237 +--
 Utilities/cmcurl/lib/vtls/mbedtls.h             |   52 +-
 Utilities/cmcurl/lib/vtls/nss.c                 |  237 ++-
 Utilities/cmcurl/lib/vtls/nssg.h                |   71 +-
 Utilities/cmcurl/lib/vtls/openssl.c             |  627 +++++---
 Utilities/cmcurl/lib/vtls/openssl.h             |   91 +-
 Utilities/cmcurl/lib/vtls/polarssl.c            |  198 ++-
 Utilities/cmcurl/lib/vtls/polarssl.h            |   52 +-
 Utilities/cmcurl/lib/vtls/polarssl_threadlock.c |    4 +-
 Utilities/cmcurl/lib/vtls/schannel.c            |  532 ++++---
 Utilities/cmcurl/lib/vtls/schannel.h            |   89 +-
 Utilities/cmcurl/lib/vtls/vtls.c                |  501 ++++--
 Utilities/cmcurl/lib/vtls/vtls.h                |   82 +-
 Utilities/cmcurl/lib/warnless.c                 |   32 +-
 145 files changed, 8011 insertions(+), 5796 deletions(-)
 create mode 100644 Utilities/cmcurl/CMake/cmake_uninstall.cmake.in
 delete mode 100644 Utilities/cmcurl/include/curl/curlbuild.h.cmake
 delete mode 100644 Utilities/cmcurl/include/curl/curlrules.h
 create mode 100644 Utilities/cmcurl/lib/mime.c
 create mode 100644 Utilities/cmcurl/lib/mime.h


hooks/post-receive
-- 
CMake


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