<div dir="ltr">Looking at your system log you may have some hints on what is going wrong. (Still leaning toward file system security issue)<div><br></div><div>The sessionId could still be sent back but if the launcher can not write that file, then apache could not figure out its mapping.</div><div><br></div><div>What linux version are you running it on?<br><div><br></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Aug 24, 2016 at 4:12 PM, Daniel Zuidinga <span dir="ltr"><<a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
yes that file has contents. otherwise the sessionID also wouldn't be
send back?<br>
<br>
any ideas how to fix the ws communication?<div><div class="h5"><br>
<br>
<div>Am 24.08.2016 um 23:44 schrieb
Sebastien Jourdain:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Yes it seems the ws forwarding is not working.
<div><br>
</div>
<div>if you cat that file you should see some content with that
id and a host/port that apache should use to connect to the
server that is running paraview.</div>
<div><br>
</div>
<div>Otherwise the documentation (link that I previously gave)
explain how to use unix group and setup the appropriate rights
to that file so apache can read while the launcher can write.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Aug 24, 2016 at 3:01 PM, Daniel
Zuidinga <span dir="ltr"><<a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> how can I check?<br>
<br>
The sessionID is sent to the client. So as far as I
understand the http requests work, but not the ws?
<div>
<div><br>
<br>
<br>
<div>Am 24.08.2016 um 22:52 schrieb Sebastien
Jourdain:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Are you sure apache has the right to read
the <span style="font-size:12.8px">/home/daniel/proxy.txt
while the launcher is writting it?</span></div>
<div><span style="font-size:12.8px"><br>
</span></div>
<div><span style="font-size:12.8px">Do you see
some content that match your sessionId within
that file?</span></div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Aug 24, 2016 at
1:57 PM, Daniel Zuidinga <span dir="ltr"><<a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> <br>
<div>I changed sessionManagerURL in my html
file to vtkWeb.properties.sessionManag<wbr>erURL
instead of <a href="http://localhost:8080/paraview" target="_blank">http://localhost:8080/paraview</a><wbr>.
Now I get in firefox:<span><br>
<br>
Use of getPreventDefault() is
deprecated. Use defaultPrevented
instead. jquery-1.8.3.min.js:2:0<br>
</span> GET <br>
<a href="http://localhost/proxy" target="_blank">http://localhost/proxy</a>
[HTTP/1.1 400 Bad Request 16ms]<br>
null Visualizer:42:13<br>
Firefox can't establish a connection to
the server at <a>ws://localhost/proxy?sessionId<wbr>=7d12745c-6a34-11e6-a5dc-0016d<wbr>4e2bc28</a>.
autobahn.min.js:114:0<br>
GET <br>
<a href="http://localhost/proxy" target="_blank">http://localhost/proxy</a>
[HTTP/1.1 400 Bad Request 2ms]<br>
null<br>
<br>
...I think one more thing is needed.
<div>
<div><br>
<br>
<br>
Am 24.08.2016 um 21:51 schrieb Daniel
Zuidinga:<br>
</div>
</div>
</div>
<div>
<div>
<blockquote type="cite"> I had wrong
paths in my launcher.config
properties.<br>
Now the request gets through and the
vtk window opens. But I have still the
ws error. Firefox console:<br>
<br>
Firefox can't establish a connection
to the server at <a>ws://localhost/ws</a>.
autobahn.min.js:114:0<br>
null Visualizer:42:13<br>
Use of getPreventDefault() is
deprecated. Use defaultPrevented
instead. jquery-1.8.3.min.js:2:0<br>
No launcher found. Attempting to
connect using the direct WS url.
vtkweb-all.js:4456:19<br>
<br>
--- vtk window opens, then:<br>
<br>
Cross-Origin Request Blocked: The Same
Origin Policy disallows reading the
remote resource at <a href="http://localhost:8080/paraview" target="_blank">http://localhost:8080/paraview</a><wbr>.
(Reason: CORS header
'Access-Control-Allow-Origin'
missing). <unknown><br>
GET <br>
<a href="http://localhost/ws" target="_blank">http://localhost/ws</a>
[HTTP/1.1 404 Not Found 2ms]<br>
null Visualizer:42:13<br>
Firefox can't establish a connection
to the server at <a>ws://localhost/ws</a>.<br>
<br>
<br>
<div>Am 24.08.2016 um 19:18 schrieb
Sebastien Jourdain:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Actually the hostname
might be an issue if you have
several network card.
<div>Can you try to use the
computer IP? Or '0.0.0.0' for
the launcher if that work?</div>
<div><br>
</div>
<div>Otherwise I did not spotted
any issue in your config.</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed,
Aug 24, 2016 at 11:14 AM, Daniel
Zuidinga <span dir="ltr"><<a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> - apache
2.4.12<br>
- modules are enabled<br>
- launcher.py launches
without error, resrouces and
apps section are in the
config file as described in
the documentation<br>
are all ports and hostnames
right in my configuration
files? apache is localhost
and paraview also
<div>
<div><br>
<br>
Am 24.08.2016 um 16:22
schrieb Sebastien
Jourdain:<br>
<blockquote type="cite">
<div dir="ltr">Hi
Daniel,
<div><br>
</div>
<div>Which version
of Apache are you
running?</div>
<div><br>
</div>
<div>Did you enabled
all the modules?</div>
<div><br>
</div>
<div>
<pre style="margin-top:0px;margin-bottom:0px;padding:0px;border:none;outline:0px;font-family:"Source Code Pro",Monaco,Menlo,Consolas,monospace;font-size:0.95em;vertical-align:baseline;color:rgb(77,77,76);line-height:22px;background:none rgb(238,238,238)"><div style="margin:0px;padding:0px;border:0px;outline:0px;font-weight:inherit;font-style:inherit;font-family:inherit;font-size:14.25px;vertical-align:baseline;min-height:22px">$ sudo a2enmod vhost_alias</div><div style="margin:0px;padding:0px;border:0px;outline:0px;font-weight:inherit;font-style:inherit;font-family:inherit;font-size:14.25px;vertical-align:baseline;min-height:22px">$ sudo a2enmod proxy</div><div style="margin:0px;padding:0px;border:0px;outline:0px;font-weight:inherit;font-style:inherit;font-family:inherit;font-size:14.25px;vertical-align:baseline;min-height:22px">$ sudo a2enmod proxy_http</div><div style="margin:0px;padding:0px;border:0px;outline:0px;font-weight:inherit;font-style:inherit;font-family:inherit;font-size:14.25px;vertical-align:baseline;min-height:22px">$ sudo a2enmod proxy_wstunnel</div><div style="margin:0px;padding:0px;border:0px;outline:0px;font-weight:inherit;font-style:inherit;font-family:inherit;font-size:14.25px;vertical-align:baseline;min-height:22px">$ sudo a2enmod rewrite</div></pre>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">For
the launcher
configuration,
do you have a
proper <span style="color:rgb(77,77,76);font-family:"Source Code Pro",Monaco,Menlo,Consolas,monospace;font-size:14.25px;line-height:22px;white-space:pre-wrap;background-color:rgb(238,238,238)">"resources"</span> and <span style="color:rgb(77,77,76);font-family:"Source Code Pro",Monaco,Menlo,Consolas,monospace;font-size:14.25px;line-height:22px;white-space:pre-wrap;background-color:rgb(238,238,238)">"apps"</span> <wbr>section?</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">I'm
guessing you are
looking at the
following
documentation
pages?</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">-
<a href="https://kitware.github.io/paraviewweb/docs/guides/apache_front_end.html" target="_blank">https://kitware.github.io/para<wbr>viewweb/docs/guides/apache_fro<wbr>nt_end.html</a><br>
</div>
<div class="gmail_quote">-
<a href="https://kitware.github.io/paraviewweb/docs/guides/python_launcher.html" target="_blank">https://kitware.github.io/para<wbr>viewweb/docs/guides/python_lau<wbr>ncher.html</a><br>
</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">Once
you have the
forwarding of
the launcher
request working,
the next part
will be the
forwarding of
the ws. But we
can talk about
it when and if
you run into
issue about it.</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">Seb</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">On
Wed, Aug 24,
2016 at 2:22 AM,
Daniel Zuidinga
<span dir="ltr"><<a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>I tried to
run the
launcher as
described in
the docs. But
I am still
getting errors
when running <a href="http://localhost/apps/Visualizer/" target="_blank">http://localhost/apps/Visualiz<wbr>er/</a></p>
<p>Firefox
console:</p>
<p>------------------------------<wbr>-<br>
</p>
<p>1. when
setting
sessionManagerURL
in html set to
vtkWeb.properties.sessionManag<wbr>erURL:</p>
<p>POST <br>
XHR <br>
<a href="http://localhost/paraview/" target="_blank">http://localhost/paraview/</a>
[HTTP/1.1 503
Service
Unavailable
48ms]<br>
Object {
error: "The
process did
not properly
start.…" }
Visualizer:42:13</p>
<p><br>
</p>
<p>2. when
setting
sessionManagerURL
in html to <a href="http://localhost:8080/paraview" target="_blank">http://localhost:8080/paraview</a><wbr>:</p>
<p>Firefox
can't
establish a
connection to
the server at
<a>ws://localhost/ws</a>.
autobahn.min.js:114:0<br>
null
Visualizer:42:13<br>
No launcher
found.
Attempting to
connect using
the direct WS
url.
vtkweb-all.js:4456:19<br>
Use of
getPreventDefault()
is
deprecated.
Use
defaultPrevented
instead.
jquery-1.8.3.min.js:2:0<br>
Cross-Origin
Request
Blocked: The
Same Origin
Policy
disallows
reading the
remote
resource at <a href="http://localhost:8080/paraview" target="_blank">http://localhost:8080/paraview</a><wbr>.
(Reason: CORS
header
'Access-Control-Allow-Origin'
missing).
<unknown><br>
GET <br>
<a href="http://localhost/ws" target="_blank">http://localhost/ws</a>
[HTTP/1.1 404
Not Found
12ms]<br>
null</p>
<p><br>
</p>
<p>So the
launcher can't
start the pv
webserver? But
running <a href="http://localhost:8080/paraview/1" target="_blank">http://localhost:8080/paraview<wbr>/1</a>
in browser
works but
says:
{"error": "No
session with
id: 1"}<br>
</p>
<p><br>
</p>
<p>My apache
config:</p>
<p>-----------------------------<br>
</p>
<p><VirtualHost
*:80><br>
ServerName
localhost<br>
ServerAdmin <a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a><br>
DocumentRoot
/home/daniel/salome_meca/V2016<wbr>/prerequisites/Paraview-v501_E<wbr>DF/share/paraview-5.0/www<br>
ErrorLog
"logs/pv-error_log"<br>
CustomLog
"logs/pv-access_log" common<br>
### The
following
commented
lines could be
useful when
running<br>
### over
https and wss:<br>
#
SSLEngine On<br>
#
SSLCertificateFile
/etc/apache2/ssl/your_certific<wbr>ate.crt<br>
#
SSLCertificateKeyFile
/etc/apache2/ssl/your_domain_k<wbr>ey.key<br>
#
SSLCertificateChainFile
/etc/apache2/ssl/DigiCertCA.cr<wbr>t<br>
#<br>
#
<Location
${MY-DOCUMENT-ROOT}
><br>
#
SSLRequireSSL
On<br>
#
SSLVerifyClient
optional<br>
#
SSLVerifyDepth
1<br>
#
SSLOptions
+StdEnvVars
+StrictRequire<br>
#
</Location><br>
# Have
Apache pass
these requests
to the
launcher :9000<br>
ProxyPass
/paraview <a href="http://localhost:8080/paraview" target="_blank">http://localhost:8080/paraview</a><br>
# Turn on
the rewrite
engine<br>
RewriteEngine
On<br>
# This is
the path the
mapping file
Jetty creates<br>
RewriteMap
session-to-port txt:/home/daniel/proxy.txt<br>
# This is
the rewrite
condition.
Look for
anything with
a sessionId=
in the query
part of the
URL and
capture the
value to use
below.<br>
RewriteCond
%{QUERY_STRING}
^sessionId=(.*)$ [NC]<br>
# This
does the
rewrite using
the mapping
file and the
sessionId<br>
RewriteRule
^/proxy.*$ <a>ws://$</a>{session-to-port:%1}/ws [P]<br>
<Directory
"/home/daniel/salome_meca/V201<wbr>6/prerequisites/Paraview-v501_<wbr>EDF/share/paraview-5.0/www"><br>
Options
Indexes
FollowSymLinks<br>
Order
allow,deny<br>
Allow
from all<br>
AllowOverride
None<br>
Require all
granted<br>
</Directory><br>
</VirtualHost></p>
<p><br>
</p>
<p><br>
</p>
<p>my
launcher.json</p>
<p>----------------------------<br>
</p>
<p> "configuration":
{<br>
"host" :
"localhost",<br>
<br>
"port" : 8080,<br>
"endpoint":
"paraview", <br>
"content":
"/.../www",
<br>
"proxy_file" :
"/home/daniel/proxy.txt", <br>
"sessionURL":
<a>"ws://localhost/proxy?sessionI<wbr>d=${id}"</a>,<br>
<br>
"timeout" :
25, <br>
"log_dir" :
"/home/daniel", <br>
"upload_dir" :
"/home/daniel", <br>
"fields" :
["file",
"host",
"port",
"updir"]
<br>
},<br>
</p>
<p><br>
</p>
<p>What am I
doing wrong?</p>
<span>
<p><br>
</p>
<pre cols="72">Daniel Zuidinga
Dipl.-Ing.
SEO Aachen
Passstr. 5
52070 Aachen
Tel : 0241 / 450 912 67
E-Mail: <a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>
Web : <a href="http://www.seoaachen.de" target="_blank">http://www.seoaachen.de</a> (nur zum Teil aktuell)
Xing : <a href="https://www.xing.com/profile/Daniel_Zuidinga" target="_blank">https://www.xing.com/profile/D<wbr>aniel_Zuidinga</a>
Bald online: Software Tools für Konstrukteure und Bauteilhersteller
<a href="http://www.engineeringonline.de" target="_blank">http://www.engineeringonline.d<wbr>e</a></pre>
</span><div><div><div>Am 22.08.2016 um 22:32 schrieb
Sebastien Jourdain:
</div>
<blockquote type="cite">
<div dir="ltr">Hi Daniel,
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I
want to use paraview web with SSL. As far as I understand
I need apache as a proxy server for that? Or is it
possible with pvpython?
</blockquote>
<div>
</div>
<div>It might be possible with pvpython, but I've never done
it, I've always used apache to rely on a single opened
port and handle the encryption. </div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I
have my own launcher which opens pvpython with a different
port for each user. Is this the right way? Will this work
with ssl?
</blockquote>
<div>
</div>
<div>If pvpython directly support the wss connection, you
can be good. Usually the setup, that I do is that I have
Apache serving only the port 443 (https) for both the
static content and the (wss) websocket endpoint. And I use
a mapping file between the Websocket endpoint that get
returned by my launcher and the host/port I should connect
to on the backend to establish the link between the client
and the actual ParaViewWeb server instance.</div>
<div>
</div>
<div>But that does not mean, that's the only way to do it
and if you don't mind having several port open, I don't
see why it could not work.</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Concerning:
<a href="https://kitware.github.io/visualizer/docs/" rel="noreferrer" target="_blank">https://kitware.github.io/visu<wbr>alizer/docs/</a>
The web visuailzer should work via npm installation? It
does not work for me:
C:\Users\danie\AppData\Roaming<wbr>\npm\node_modules\pvw-visualiz<wbr>er\bin\pvw-visualizer-cli.js:4<wbr>1
var pvPythonExecs = find(paraview).filter(function<wbr>(file)
{ return file.match(/pvpython$/) ||
file.match(/pvpython.exe$/); });
^
TypeError: find(...).filter is not a function
at Object.<anonymous>
(C:\Users\danie\AppData\Roamin<wbr>g\npm\node_modules\pvw-visuali<wbr>zer\bin\pvw-visualizer-cli.js:<wbr>41:36)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:968:3
</blockquote>
<div>
</div>
<div>Well, I guess I haven't tried to run the new Visualizer
server on a Windows machine. </div>
<div>But with ParaView 5.2 (yet to be released), we should
have a ParaViewWeb back in the binaries. So we should make
sure our Visualizer command line tool work on that
platform as well.</div>
<div>Although, the command line is more for beginners than
anything else as it only simplify the demo usage. In real
word deployment, with a launcher, the true pvpython
command line should be used instead.</div>
<div>
</div>
<div>Here is an example of what you should see in a working
environment:</div>
<div>
</div>
<div>
<div>$ Visualizer -d ~/Downloads/</div>
<div>
</div>
<div>==============================<wbr>==============================<wbr>===================</div>
<div>| Execute:</div>
<div>| $ /Applications/paraview.app/Con<wbr>tents/bin/pvpython</div>
<div>| -dr</div>
<div>|
/Users/seb/Documents/code/Web2<wbr>/visualizer/server/pvw-visuali<wbr>zer.py</div>
<div>| --content</div>
<div>| /Users/seb/Documents/code/Web2<wbr>/visualizer/dist</div>
<div>| --port</div>
<div>| 8080</div>
<div>| --data</div>
<div>| /Users/seb/Downloads/</div>
<div>==============================<wbr>==============================<wbr>===================</div>
<div>
</div>
<div>[...]</div>
<div>
</div>
--
Daniel Zuidinga
Dipl.-Ing.
SEO Aachen
Passstr. 5
52070 Aachen
Tel : 0241 / 450 912 67
E-Mail: <a href="mailto:info@seoaachen.de" target="_blank">info@seoaachen.de</a>
Web : <a href="http://www.seoaachen.de" rel="noreferrer" target="_blank">http://www.seoaachen.de</a> (nur zum
Teil aktuell)
Xing : <a href="https://www.xing.com/profile/Daniel_Zuidinga" rel="noreferrer" target="_blank">https://www.xing.com/profile/D<wbr>aniel_Zuidinga</a>
Bald online: Software Tools für Konstrukteure und
Bauteilhersteller
<a href="http://www.engineeringonline.de" rel="noreferrer" target="_blank">http://www.engineeringonline.d<wbr>e</a>
______________________________<wbr>_________________
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</div>
</div>
</div>
</blockquote>
</div></div></div>
</blockquote></div>
</div></div>
</blockquote>
</div></div></div></blockquote></div>
</div>
</blockquote>
<fieldset></fieldset>
<pre>______________________________<wbr>_________________
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</blockquote><p>
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