1 Reply Latest reply on Apr 10, 2013 3:07 PM by jadtn

[RF 4.3.1.Final]A4j;push NPE in org.richfaces.application.push.impl.RequestImpl.onBroadcast(RequestImpl.java:166

jadtn Apr 7, 2013 7:28 AM

Hi,

I got strange exception sometimes with a4j:push

(AS 6.1 alpha / RF4.3.1 Final)

I try to reproduce the problem systematicaly, but actually i don t found, it s seems to be very occasionaly. May be the stacktrace tells something to anyone?

it's seem getSession() is null in RequestImpl 166., I don't know if it has a rapport with sometimes i m logged and open a popup wich use a4j:push and something logout me (don't know why, it s only with a page with a4j:push) .. I don t know how to reproduce the problem systematicaly, but it seems to appears particulary when i open the popup with a4j:push and the server started.

In the case i m aleatory logout , i have'nt this exception at each time.

Thanks

Adrien

2:53:01,576 SEVERE [org.richfaces.log.Application] (http-/0.0.0.0:80-4) null: java.lang.NullPointerException

at org.richfaces.application.push.impl.RequestImpl.onBroadcast(RequestImpl.java:166) [richfaces-core-impl-4.3.1.Final.jar:4.3.1.Final]

at org.atmosphere.cpr.AtmosphereResourceImpl.onBroadcast(AtmosphereResourceImpl.java:823) [atmosphere-runtime-1.0.10.jar:1.0.10]

at org.atmosphere.cpr.AtmosphereResourceImpl.notifyListeners(AtmosphereResourceImpl.java:770) [atmosphere-runtime-1.0.10.jar:1.0.10]

at org.atmosphere.cpr.AtmosphereResourceImpl.notifyListeners(AtmosphereResourceImpl.java:742) [atmosphere-runtime-1.0.10.jar:1.0.10]

at org.atmosphere.cpr.AsynchronousProcessor.timedout(AsynchronousProcessor.java:471) [atmosphere-runtime-1.0.10.jar:1.0.10]

at org.atmosphere.container.Servlet30CometSupport$CometListener.onTimeout(Servlet30CometSupport.java:218) [atmosphere-runtime-1.0.10.jar:1.0.10]

at org.apache.catalina.core.StandardWrapperValve.async(StandardWrapperValve.java:523) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.core.StandardWrapperValve.event(StandardWrapperValve.java:349) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.core.StandardContextValve.event(StandardContextValve.java:171) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.valves.ValveBase.event(ValveBase.java:185) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.core.StandardHostValve.event(StandardHostValve.java:247) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.valves.ValveBase.event(ValveBase.java:185) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.core.StandardEngineValve.event(StandardEngineValve.java:121) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.catalina.connector.CoyoteAdapter.event(CoyoteAdapter.java:228) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.coyote.http11.Http11Processor.event(Http11Processor.java:740) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.event(Http11Protocol.java:606) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:907) [jbossweb-7.2.0.Final.jar:7.2.0.Final]

at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_38]

1. Re: [RF 4.3.1.Final]A4j;push NPE in org.richfaces.application.push.impl.RequestImpl.onBroadcast(RequestImpl.java:166

jadtn Apr 10, 2013 3:07 PM (in response to jadtn)

Hi
I've found the problem.
The cause was a javascript alert in the browser. this alert 'block' certainly something in the push communication.
I you have 2 frame/tab in the browser: on the first tab you display the alert (in bold) and try to login on the second tab and reuse a4:push -->you are logout.
Alert on a4j:push event seems to be a very bad idea.
Maybe if someone know an asynchronous alert i'm interested :-)
Adrien

<h:form>
<a4j:push onerror="alert('Erreur. Fermer puis relancer le chat');" address="#{ctrlChatPushUser.queueId}"
          ondataavailable=" onNewDataPush(event);">
    <a4j:ajax event="dataavailable" render="#{ctrlChatPushUser.toRerender}" oncomplete="scrollbottom();" />
     <a4j:ajax event="subscribed" render="chatblock" />
</a4j:push>

</h:form>

<h:outputScript target="head">

       function onNewDataPush(event){

              if(event.rf.data == 'logoutchat'){
                       alert('End Chat Session');//this lock page with the alert , then if you try to login by another tab in browser and reinitialise a push for this user your are logout
                       self.close();
                     }
                     if(strStartsWith(event.rf.data,'blacklist:')){
                                  alert(event.rf.data);
                     }
     }

</h:outputScript>
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