[jboss-jira] [JBoss JIRA] Closed: (JBREM-106) Adding a second push listener in a colocated config breaks both listeners

Wed Sep 26 05:31:06 EDT 2007

     [ http://jira.jboss.com/jira/browse/JBREM-106?page=all ]

David Lloyd closed JBREM-106.
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> Adding a second push listener in a colocated config breaks both listeners
> -------------------------------------------------------------------------
>
>                 Key: JBREM-106
>                 URL: http://jira.jboss.com/jira/browse/JBREM-106
>             Project: JBoss Remoting
>          Issue Type: Bug
>          Components: callbacks
>    Affects Versions: 1.2.0 final
>         Environment: JDK 1.4.2_06
>            Reporter: Ovidiu Feodorov
>         Assigned To: Tom  Elrod
>         Attachments: MultipleListenersCoLocatedBug.java
>
>
> Adding a second push listener to a target server breaks the first listener (actually both of them). The  bug shows up in a colocated environment, where the client, the callback server and the target server are in the same VM. 
> I have attached a class (MultipleListenersColocatedBug.java) that compiled and ran demonstrates the bug. The main() method code and comments are self explanatory. 
> Cause:
> Because of the colocated configuration, the ServerInvokerCallbackHandler corresponding to the first listener (that is correctly registered) uses a LocalClientInvoker to push callbacks to the callback server. 
> When the second listener is registered, Client.addListener(InvokerCallbackHandler, InvokerLocator, Object) creates, connects and *disconnects* a client to ADDCLIENTLISTENER to the callback server. 
> The temporary client uses the *same* LocalClientInvoker as the first ServerInvokerCallbackHandler. When the temporary client is disconnected, the ServerInvokerCallbackHandler's LocalClientInvoker is left dangling, hence the exception:
> Caused by: org.jboss.remoting.HandleCallbackException: Can not handle callback since can not connect to client invoker.
>         at org.jboss.remoting.ServerInvokerCallbackHandler.handleCallback(ServerInvokerCallbackHandler.java:378)

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