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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMQ-4807) Chat demo - May cause NPE when disconnecting clients
Date Tue, 15 Oct 2013 15:04:45 GMT
Claus Ibsen created AMQ-4807:
--------------------------------

             Summary: Chat demo - May cause NPE when disconnecting clients
                 Key: AMQ-4807
                 URL: https://issues.apache.org/jira/browse/AMQ-4807
             Project: ActiveMQ
          Issue Type: Bug
    Affects Versions: 5.9.0
            Reporter: Claus Ibsen
            Assignee: Claus Ibsen
            Priority: Minor
             Fix For: 5.10.0


After testing the 5.9 RC I played with the various demos, and the chat demo.

I opened a 2nd browser to login with a 2nd user, and did some chat.
I noticed in my console these WARN logs. Not sure if they happened when I disconnected a client,
or something.

{code}
WARN | /demo/amq
java.lang.NullPointerException
	at org.apache.activemq.web.MessageListenerServlet.doMessages(MessageListenerServlet.java:381)
	at org.apache.activemq.web.MessageListenerServlet.doGet(MessageListenerServlet.java:250)
	at org.apache.activemq.web.AjaxServlet.doGet(AjaxServlet.java:47)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:652)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1320)
	at org.apache.activemq.web.SessionFilter.doFilter(SessionFilter.java:45)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1291)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:443)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:532)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1044)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:372)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:189)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:978)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:532)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
	at org.eclipse.jetty.server.Server.handle(Server.java:367)
	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:486)
	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:640)
	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:724)
{code}



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