[Paraview] WebSocket Connection lost in ParaviewWeb
Arya Mazaheri
aryanet at gmail.com
Sat Jan 25 09:09:11 EST 2014
I tried that.
I switched to 'daemon' user as the apache is set to work with. I could cat
the mapping.txt file without any problem.
I'm suspicious on mod_rewrite module. I think it may now working properly.
Do you have any idea that I could check it's functionality?
Do you have any clue that what would be the cause of this problem?
Thanks for your helps,
On Thu, Jan 23, 2014 at 5:31 PM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:
> Does the apache "user" can read that file?
> Are all the directories above that file "executable" for that user?
>
> Try by switching to that user and check if you can "cat" that file.
>
> Seb
>
>
> On Thu, Jan 23, 2014 at 4:36 AM, Arya Mazaheri <aryanet at gmail.com> wrote:
>
>> Yes, I checked that. There are some entries with the following pattern:
>> 97b94394-7edb-4b9b-b26a-4d76aee49925 pvwserver:9099
>>
>> Just to let you know, I didn’t create the special group like mentioned in
>> Amazon EC2 tutorial. I made this file’s permission to 777. I hope this
>> wouldn’t be the cause of the problem.
>>
>> On Wednesday ۲ November ۱۳۹۲ BC at ۷:۱۶ بعدازظهر, Sebastien Jourdain
>> wrote:
>>
>> That patch was integrated into the master branch of Apache a while ago,
>> but I was not aware that it made it to the 2.4.7 release.
>> So, if you have Apache 2.4.7, you SHOULD NOT patch it.
>>
>> The version that you had was correct and should have worked.
>> The remaining question is regarding the
>> file: /opt/apache-2.4.7/pv-mapping-file/mapping.txt
>>
>> Is that file properly created? Does the content reflect the session id,
>> host and port as expected?
>>
>> Seb
>>
>>
>> On Wed, Jan 22, 2014 at 1:36 AM, Arya Mazaheri <aryanet at gmail.com> wrote:
>>
>> Thanks for mentioning that. I've got stuck in running PW, trying every
>> solution and wondering why it doesn't work!!
>>
>> Anyway, since I didn't have any other choice I decided to patch my Apache
>> 2.4.7 source and then recompile it. Now, when I try to run the 'make' it
>> throws the following error:
>> mod_rewrite.c: In function ‘is_absolute_uri’:
>> mod_rewrite.c:600: error: duplicate case value
>> mod_rewrite.c:589: error: previously used here
>> mod_rewrite.c:601: error: duplicate case value
>> mod_rewrite.c:590: error: previously used here
>> make[4]: *** [mod_rewrite.slo] Error 1
>> make[4]: Leaving directory
>> `/root/apacheInstall/apache-src/httpd-2.4.7/modules/mappers'
>> make[3]: *** [shared-build-recursive] Error 1
>> make[3]: Leaving directory
>> `/root/apacheInstall/apache-src/httpd-2.4.7/modules/mappers'
>> make[2]: *** [shared-build-recursive] Error 1
>> make[2]: Leaving directory
>> `/root/apacheInstall/apache-src/httpd-2.4.7/modules'
>> make[1]: *** [shared-build-recursive] Error 1
>> make[1]: Leaving directory `/root/apacheInstall/apache-src/httpd-2.4.7'
>> make: *** [all-recursive] Error 1
>>
>>
>> Shouldn't I patch my source??
>>
>>
>> On Tue, Jan 21, 2014 at 8:12 PM, Scott Wittenburg <
>> scott.wittenburg at kitware.com> wrote:
>>
>> Just wanted to jump in here. The patch instructions are, strangely,
>> missing from that Amazon EC2 setup documentation. That's my fault, since I
>> wrote it. I'll update the documenation with the steps below, which should
>> have been in there all along. However, I just checked, and the version
>> you're using (2.4.7) already has the patch included, so these steps really
>> only apply to versions 2.4.6 and earlier. Sorry for the oversight.
>>
>> 1) Download the patch:
>>
>> wget -O patch.txt
>> https://issues.apache.org/bugzilla/attachment.cgi?id=30886&action=diff&context=patch&collapsed=&headers=1&format=raw
>>
>> 2) Change to the root of the httpd source tree and patch the source:
>>
>> patch -u -p1 < path-to-patch/patch.txt
>>
>>
>>
>>
>> On Tue, Jan 21, 2014 at 4:24 AM, Arya Mazaheri <aryanet at gmail.com> wrote:
>>
>> Thanks for your reply.
>> Previously, I was following the old model approach using apache 2.2. Now,
>> I upgraded to Apache 2.4.7. And followed the Amazon EC2 tutorial. However,
>> now I get the following message in the firebug which the rickshaw.min.js
>> file generated that:
>> Firefox can't establish a connection to the server at
>> ws://pvwserver/proxy?sessionId=9521c7c5-d2c6-4e9d-980e-5c7ea9f7dfd4.
>>
>> Is it related to the rewriting module? Maybe it's not working! Any idea?
>> I've attached my 'pw-config.properties' and 'httpd-vhosts.conf' files
>> to this thread.
>>
>> Regards,
>>
>>
>> On Mon, Jan 20, 2014 at 10:26 PM, Sebastien Jourdain <
>> sebastien.jourdain at kitware.com> wrote:
>>
>> The web socket forwarding should be handle by Apache at that point and it
>> seems to be done by Jetty?
>> In your jetty configuration, the session URL might not be valid when
>> using Apache as a front-end.
>>
>> Moreover, which Apache setup did you used? 2.4+ like for the EC2 Amazon
>> documentation or the old one with the Python module?
>>
>> Seb
>>
>>
>> On Mon, Jan 20, 2014 at 9:24 AM, Arya Mazaheri <aryanet at gmail.com>wrote:
>>
>> Hi there,
>> I've installed ParaviewWeb from source and configured apache to work with
>> jetty. I think I've done every configuration according to the tutorials.
>> But everytime I try to open DataProber application I face with the
>> following error in Jetty console output:
>>
>> Jan 20, 2014 7:50:18 PM com.kitware.paraview
>> web.websocket.WebSocketForwarder onOpen
>> INFO: null
>> java.util.concurrent.ExecutionException: java.net.ConnectException:
>> Connection refused
>> at
>> org.eclipse.jetty.websocket.WebSocketClient$WebSocketFuture.get(WebSocketClient.java:569)
>> at
>> org.eclipse.jetty.websocket.WebSocketClient$WebSocketFuture.get(WebSocketClient.java:372)
>> at com.kitware.paraviewweb.websocket.WebSocketForwarder.onOpen
>> (WebSocketForwarder.java:54)
>> at
>> org.eclipse.jetty.websocket.WebSocketConnectionRFC6455.onWebSocketOpen(WebSocketConnectionRFC6455.java:425)
>> at
>> org.eclipse.jetty.websocket.WebSocketServletConnectionRFC6455.handshake(WebSocketServletConnectionRFC6455.java:60)
>> at
>> org.eclipse.jetty.websocket.WebSocketFactory.upgrade(WebSocketFactory.java:309)
>> at
>> org.eclipse.jetty.websocket.WebSocketFactory.acceptWebSocket(WebSocketFactory.java:382)
>> at
>> org.eclipse.jetty.websocket.WebSocketHandler.handle(WebSocketHandler.java:43)
>> at
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
>> at org.eclipse.jetty.server.Server.handle(Server.java:365)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:485)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:926)
>> at
>> org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:988)
>> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:635)
>> at
>> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
>> at
>> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
>> at
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:628)
>> at
>> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
>> at
>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
>> at java.lang.Thread.run(Thread.java:701)
>> Caused by: java.net.ConnectException: Connection refused
>> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>> at
>> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:597)
>> at
>> org.eclipse.jetty.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:628)
>> at
>> org.eclipse.jetty.io.nio.SelectorManager$1.run(SelectorManager.java:290)
>> ... 3 more
>>
>>
>> In the firebug, I see the following error:
>> Connection lost - retrying (1) ..
>>
>> Any ideas?
>>
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