[Paraview] Paraview Web with SSL

Wed Aug 24 13:18:28 EDT 2016

Actually the hostname might be an issue if you have several network card.
Can you try to use the computer IP? Or '0.0.0.0' for the launcher if that
work?

Otherwise I did not spotted any issue in your config.

On Wed, Aug 24, 2016 at 11:14 AM, Daniel Zuidinga <info at seoaachen.de> wrote:

> - apache 2.4.12
> - modules are enabled
> - launcher.py launches without error, resrouces and apps section are in
> the config file as described in the documentation
> are all ports and hostnames right in my configuration files? apache is
> localhost and paraview also
>
>
> Am 24.08.2016 um 16:22 schrieb Sebastien Jourdain:
>
> Hi Daniel,
>
> Which version of Apache are you running?
>
> Did you enabled all the modules?
>
> $ sudo a2enmod vhost_alias
> $ sudo a2enmod proxy
> $ sudo a2enmod proxy_http
> $ sudo a2enmod proxy_wstunnel
> $ sudo a2enmod rewrite
>
>
> For the launcher configuration, do you have a proper "resources" and
> "apps" section?
>
> I'm guessing you are looking at the following documentation pages?
>
> - https://kitware.github.io/paraviewweb/docs/guides/apache_front_end.html
> - https://kitware.github.io/paraviewweb/docs/guides/python_launcher.html
>
> 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.
>
> Seb
>
> On Wed, Aug 24, 2016 at 2:22 AM, Daniel Zuidinga <info at seoaachen.de>
> wrote:
>
>> I tried to run the launcher as described in the docs. But I am still
>> getting errors when running http://localhost/apps/Visualizer/
>>
>> Firefox console:
>>
>> -------------------------------
>>
>> 1. when setting sessionManagerURL in html set to
>> vtkWeb.properties.sessionManagerURL:
>>
>> POST
>> XHR
>> http://localhost/paraview/ [HTTP/1.1 503 Service Unavailable 48ms]
>> Object { error: "The process did not properly start.…" } Visualizer:42:13
>>
>>
>> 2. when setting sessionManagerURL in html to
>> http://localhost:8080/paraview:
>>
>> Firefox can't establish a connection to the server at ws://localhost/ws.
>> autobahn.min.js:114:0
>> null Visualizer:42:13
>> No launcher found.  Attempting to connect using the direct WS url.
>> vtkweb-all.js:4456:19
>> Use of getPreventDefault() is deprecated.  Use defaultPrevented instead.
>> jquery-1.8.3.min.js:2:0
>> Cross-Origin Request Blocked: The Same Origin Policy disallows reading
>> the remote resource at http://localhost:8080/paraview. (Reason: CORS
>> header 'Access-Control-Allow-Origin' missing). <unknown>
>> GET
>> http://localhost/ws [HTTP/1.1 404 Not Found 12ms]
>> null
>>
>>
>> So the launcher can't start the pv webserver? But running
>> http://localhost:8080/paraview/1 in browser works but says: {"error":
>> "No session with id: 1"}
>>
>>
>> My apache config:
>>
>> -----------------------------
>>
>> <VirtualHost *:80>
>>     ServerName localhost
>>     ServerAdmin info at seoaachen.de
>>     DocumentRoot /home/daniel/salome_meca/V2016
>> /prerequisites/Paraview-v501_EDF/share/paraview-5.0/www
>>     ErrorLog "logs/pv-error_log"
>>     CustomLog "logs/pv-access_log" common
>>     ### The following commented lines could be useful when running
>>     ### over https and wss:
>>     # SSLEngine On
>>     # SSLCertificateFile    /etc/apache2/ssl/your_certificate.crt
>>     # SSLCertificateKeyFile /etc/apache2/ssl/your_domain_key.key
>>     # SSLCertificateChainFile /etc/apache2/ssl/DigiCertCA.crt
>>     #
>>     # <Location ${MY-DOCUMENT-ROOT} >
>>     #   SSLRequireSSL On
>>     #   SSLVerifyClient optional
>>     #   SSLVerifyDepth 1
>>     #   SSLOptions +StdEnvVars +StrictRequire
>>     # </Location>
>>     # Have Apache pass these requests to the launcher :9000
>>     ProxyPass /paraview http://localhost:8080/paraview
>>     # Turn on the rewrite engine
>>     RewriteEngine On
>>     # This is the path the mapping file Jetty creates
>>     RewriteMap session-to-port txt:/home/daniel/proxy.txt
>>     # This is the rewrite condition. Look for anything with a sessionId=
>> in the query part of the URL and capture the value to use below.
>>     RewriteCond %{QUERY_STRING}     ^sessionId=(.*)$ [NC]
>>     # This does the rewrite using the mapping file and the sessionId
>>     RewriteRule    ^/proxy.*$  ws://${session-to-port:%1}/ws  [P]
>>     <Directory "/home/daniel/salome_meca/V201
>> 6/prerequisites/Paraview-v501_EDF/share/paraview-5.0/www">
>>         Options Indexes FollowSymLinks
>>         Order allow,deny
>>         Allow from all
>>         AllowOverride None
>>         Require all granted
>>     </Directory>
>> </VirtualHost>
>>
>>
>>
>> my launcher.json
>>
>> ----------------------------
>>
>>  "configuration": {
>>             "host" : "localhost",
>>
>>             "port" : 8080,
>>             "endpoint": "paraview",
>>             "content": "/.../www",
>>             "proxy_file" : "/home/daniel/proxy.txt",
>>                "sessionURL": "ws://localhost/proxy?sessionId=${id}",
>>
>>             "timeout" : 25,
>>             "log_dir" : "/home/daniel",
>>             "upload_dir" : "/home/daniel",
>>             "fields" : ["file", "host", "port", "updir"]
>>         },
>>
>>
>> What am I doing wrong?
>>
>>
>> Daniel Zuidinga
>> Dipl.-Ing.
>>
>> SEO Aachen
>> Passstr. 5
>> 52070 Aachen
>>
>> Tel   : 0241 / 450 912 67
>> E-Mail: info at seoaachen.de
>> Web   : http://www.seoaachen.de (nur zum Teil aktuell)
>> Xing  : https://www.xing.com/profile/Daniel_Zuidinga
>>
>> Bald online: Software Tools für Konstrukteure und Bauteilherstellerhttp://www.engineeringonline.de
>>
>> Am 22.08.2016 um 22:32 schrieb Sebastien Jourdain:
>>
>> Hi Daniel,
>>
>>> 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?
>>
>> 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.
>>
>>
>>> 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?
>>
>> 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.
>> 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.
>>
>>
>>> Concerning: https://kitware.github.io/visualizer/docs/ The web
>>> visuailzer should work via npm installation? It does not work for me:
>>> C:\Users\danie\AppData\Roaming\npm\node_modules\pvw-visualiz
>>> er\bin\pvw-visualizer-cli.js:41 var pvPythonExecs =
>>> find(paraview).filter(function(file) { return file.match(/pvpython$/)
>>> || file.match(/pvpython.exe$/); });                                    ^
>>> TypeError: find(...).filter is not a function     at Object.<anonymous>
>>> (C:\Users\danie\AppData\Roaming\npm\node_modules\pvw-visuali
>>> zer\bin\pvw-visualizer-cli.js: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
>>
>> Well, I guess I haven't tried to run the new Visualizer server on a
>> Windows machine.
>> 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.
>> 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.
>> Here is an example of what you should see in a working environment:
>> $ Visualizer -d ~/Downloads/
>> ============================================================
>> ===================
>> | Execute:
>> | $ /Applications/paraview.app/Contents/bin/pvpython
>> |   -dr
>> |   /Users/seb/Documents/code/Web2/visualizer/server/pvw-visualizer.py
>> |   --content
>> |   /Users/seb/Documents/code/Web2/visualizer/dist
>> |   --port
>> |   8080
>> |   --data
>> |   /Users/seb/Downloads/
>> ============================================================
>> ===================
>> [...]
>> -- Daniel Zuidinga Dipl.-Ing. SEO Aachen Passstr. 5 52070 Aachen Tel   :
>> 0241 / 450 912 67 E-Mail: info at seoaachen.de Web   :
>> http://www.seoaachen.de (nur zum Teil aktuell) Xing  :
>> https://www.xing.com/profile/Daniel_Zuidinga Bald online: Software Tools
>> für Konstrukteure und Bauteilhersteller http://www.engineeringonline.de
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