(PUSH) Communication problem, Client is dead

Steffen9 · June 15, 2015, 9:50am

Hi,

I have a application which use LONG_POLLING Push:

@PreserveOnRefresh
@Push(value=PushMode.AUTOMATIC, transport=Transport.LONG_POLLING)
public class DocFlowUI extends UI {
  ...
}

Sometimes the communication between Browser and server seems to be broken. If the user click on a button nothing happens. Seems also that on server side the request is not recognized (Can’t debug this yet because this is a problem on a productive server). In front of the Vaadin application is a apache httpd proxy with following configuration:

ProxyPass /VAADIN/ http://127.0.0.1:18080/c-onDocFlowVaadin/VAADIN/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /VAADIN/ http://127.0.0.1:18080/c-onDocFlowVaadin/VAADIN/
ProxyPass /vaadin/ http://127.0.0.1:18080/c-onDocFlowVaadin/vaadin/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /vaadin/ http://127.0.0.1:18080/c-onDocFlowVaadin/vaadin/
ProxyPass /vaadin-pushapp/ http://127.0.0.1:18080/c-onDocFlowVaadin/vaadin-pushapp/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /vaadin-pushapp/ http://127.0.0.1:18080/c-onDocFlowVaadin/vaadin-pushapp/
ProxyPass /APP/ http://127.0.0.1:18080/c-onDocFlowVaadin/APP/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /APP/ http://127.0.0.1:18080/c-onDocFlowVaadin/APP/
ProxyPass /PUSH/ http://127.0.0.1:18080/c-onDocFlowVaadin/PUSH/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /PUSH/ http://127.0.0.1:18080/c-onDocFlowVaadin/PUSH/
ProxyPass /HEARTBEAT/ http://127.0.0.1:18080/c-onDocFlowVaadin/HEARTBEAT/ connectiontimeout=86400 timeout=86400
ProxyPassReverse /HEARTBEAT/ http://127.0.0.1:18080/c-onDocFlowVaadin/HEARTBEAT/
ProxyPass / http://127.0.0.1:18080/c-onDocFlowVaadin/ connectiontimeout=86400 timeout=86400
ProxyPassReverse / http://127.0.0.1:18080/c-onDocFlowVaadin/

ProxyPassReverseCookiePath /c-onDocFlowVaadin /

In the case of the communication problem we get in the apache log tons of following messages of the broken client:

184.137.113.199 - - [15/Jun/2015:09:38:57 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353941352 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:38:57 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353941324 HTTP/1.1" 200 2202 184.137.113.199 - - [15/Jun/2015:09:38:58 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353942012 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:38:57 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353941983 HTTP/1.1" 200 2201 184.137.113.199 - - [15/Jun/2015:09:38:59 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353942747 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:38:59 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353942720 HTTP/1.1" 200 2202 184.137.113.199 - - [15/Jun/2015:09:39:00 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353944079 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:38:59 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353944047 HTTP/1.1" 200 2202 184.137.113.199 - - [15/Jun/2015:09:39:02 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353945085 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:39:02 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353945066 HTTP/1.1" 200 2202 184.137.113.199 - - [15/Jun/2015:09:39:03 +0200] "POST /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&_=1434353946570 HTTP/1.1" 200 - 184.137.113.199 - - [15/Jun/2015:09:39:02 +0200] "GET /PUSH/?v-uiId=0&v-csrfToken=12c868c3-d7d1-40c9-919b-c88ee14e79b3&X-Atmosphere-tracking-id=b17610c4-934a-4475-b2a4-4f6d562a5c54&X-Atmosphere-Framework=2.2.6.vaadin3-jquery&X-Atmosphere-Transport=long-polling&X-Atmosphere-TrackMessageSize=true&Content-Type=application%2Fjson%3B%20charset%3DUTF-8&X-atmo-protocol=true&_=1434353946540 HTTP/1.1" 200 2201Seems that the communication problem started if the user makes for several minutes no actions.

Anybody knows what’s wrong? Any tipps?

Thanks,
Steffen