0 Replies Latest reply on Apr 23, 2003 11:18 AM by Merv Newell

    Remote notification listener

    Merv Newell Newbie

      Hi

      I have been testing functionality of MBeans and have run into a problem that I can't seem to get around.

      I have created an MBean that allows for a variable to be updated and then broadcast a notification that the variable has been updated. I then created one client that calls a method to update the variable. I then created a second client that creates a RemoteMBeanServer and adds a notification listener to capture the notifications.

      This all works fine. The problem occurs if the RemoteListener app is not shut down properly, say the app is terminated, the "removeConnection" method is never called at which point the client app the does the update gets a error everytime the update is called. The error is that it can't connect to the IP of the RemoteListener. Even if I stop and start both the client that does the update and the remotelistener client I still get the same can't connect error.

      It appears that the client will always go back to that instance of the remote listener that it was originally connected too, even though it is no longer valid.

      Hopefully I explained this well enough, its kind of involved trying to explain.

      Does anybody have any ideas?

      Thanks
      Merv

      Error message from client
      IP 10.1.1.101 is where the RemoteListener application was running.

      RuntimeMBeanException: RuntimeException in MBean operation 'updateUserName(,java
      .lang.String)'
      Cause: org.jboss.util.NestedRuntimeException: Connection refused to host: 10.1.1
      .101; nested exception is:
      java.net.ConnectException: Connection refused: connect; - nested throwab
      le: (java.rmi.ConnectException: Connection refused to host: 10.1.1.101; nested e
      xception is:
      java.net.ConnectException: Connection refused: connect)
      at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
      nDispatcher.java:299)
      at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:549)
      at org.jboss.jmx.adaptor.rmi.RMIAdaptorImpl.invoke(RMIAdaptorImpl.java:2
      69)
      at sun.reflect.GeneratedMethodAccessor63.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
      sorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:324)
      at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
      at sun.rmi.transport.Transport$1.run(Transport.java:148)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
      at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:4
      60)
      at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport
      .java:701)
      at java.lang.Thread.run(Thread.java:536)
      at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Stream
      RemoteCall.java:247)
      at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:
      223)
      at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:133)
      at org.jboss.jmx.adaptor.rmi.RMIAdaptorImpl_Stub.invoke(Unknown Source)
      at Client.updateUserName(Client.java:108)
      at Client.doMainLoop(Client.java:58)
      at Client.main(Client.java:38)