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why JMS server connection can not recover when the socket, which JMS server uses to delivery messages to client, is broken
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created by <a href="http://community.jboss.org/people/dengyong">yong deng</a> in <i>JBoss Messaging Development</i> - <a href="http://community.jboss.org/message/544953#544953">View the full discussion</a>
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<div class="jive-rendered-content"><p>My environment:</p><div id="_mcePaste">JBoss messaging 1.4.0.SP3-CP05 + JBoss remoting 2.2.2.SP10</div><div id="_mcePaste"> </div><div id="_mcePaste"> </div><div> </div><div>My case is like below:</div><div id="_mcePaste">   I have a JMS client which will subscribe messages from a JMS topic. On the JMS connection, I set an ExceptionListener so that I can detect the connection broken.</div><div id="_mcePaste">   I did following testing and found some situation JMS connection exception listener can not dectect connection broken.</div><div id="_mcePaste">   By default, JMS bisocket will listen on port 4457. For every JMS connection, I can find two TCP connection connecting to the port 4457. Besides that, I can find the other two TCP connection which I guess server will use to delivery messages to the clients.</div><div id="_mcePaste">   1. when I [only] close TCP connection connecting to the port 4457 use some tools, indeed the ExceptionListener can detect the broken connection</div><div id="_mcePaste">   2. but when I [only] close the other two TCP connection, I find:</div><div id="_mcePaste">       1) JMS server will log an exception on ServerInvokerCallbackHandler. After that, it seems will never recover to delivery messages to the clients agains.</div><div id="_mcePaste">       On the same handle, the session will still be live in server side, I find this from MBean [jboss.messaging:service=ServerPeer  showActiveClientsAsHTML] from JMX console.</div><div id="_mcePaste">       2) JMS client then can never get message from server side again and also the JMS ExceptionListener on connection can never detect connection failure</div><div> </div><div> </div><div id="_mcePaste"> </div><div id="_mcePaste"> </div><div id="_mcePaste">Now my questions here is:</div><div id="_mcePaste">   1. for my case 2, should not the JMS server try to recovery from broken sockets to delivery messages to the JMS client again?</div><div id="_mcePaste">   2. for my case 2, if expected behavior can not be implemented, at least JMS connection ExceptionListener should be able to detect failure and reconnect?</div><div> </div></div>
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