Hi all,
i'm implementing a system with many clients (JDK's 1.4) and a server (JBoss 2.4.2). 
This clients receives messages throught JMS.

I'm trying that if I disconnect the net cable and after a while i reconnect the cable i was able to receipt the messages.
I have a Thread that checks the connection state and reconnects the subscribers.
The problem its that the socket beetween the server and my client itīs yet stablished now, when i want to re-establish the
connection, jboss tells me that this client its allready connected to the server:

[INFO,UILServerILService] Client request resulted in a server exception: 
javax.jms.JMSSecurityException: The login id has an assigned client id. That client id is already connected to the server!
at org.jboss.mq.server.StateManager.checkUser(StateManager.java:195)
at org.jboss.mq.server.JMSServer.checkUser(JMSServer.java:540)
at org.jboss.mq.il.uil.UILServerILService.run(UILServerILService.java:286)
at java.lang.Thread.run(Thread.java:479)

In the client side, the log is:

An exception(JMSException) occured: org.jboss.mq.SpyJMSException: Cannot get a client ID
org.jboss.mq.SpyJMSException: Cannot get a client ID
at org.jboss.mq.Connection.askForAnID(Connection.java:488)
at org.jboss.mq.Connection.<init>(Connection.java:118)
at org.jboss.mq.SpyConnection.<init>(SpyConnection.java:47)
at org.jboss.mq.SpyConnectionFactory.createTopicConnection(SpyConnectionFactory.java:76)
at com.ips.mainoutlet.messages.LocalACKMessageSubscriber.<init>(LocalACKMessageSubscriber.java:92)
at com.ips.mainoutlet.messages.DataBaseUpdater.start(DataBaseUpdater.java:77)
at com.ips.mainoutlet.tpv.application.proto_main_outlet.Frame1.setConnected(Frame1.java:2098)
at com.ips.mainoutlet.bbdd_api.threadConexion.run(threadConexion.java:79)
linked exception is:
javax.jms.JMSSecurityException: The login id has an assigned client id. That client id is already connected to the server!
linked exception is:
javax.jms.JMSSecurityException: The login id has an assigned client id. That client id is already connected to the server!

   this exception occurs in the line:
   topicConnection=topicFactory.createTopicConnection(strIdTienda,strIdTienda);
   when i'm trying to reconnect.


In other case, if i close my application, the sockets were closed, and if after an hour i want to reconnect, the messages are well
receipt.

How can I disconnect a subscriber?
How can i break manually break the socket ?

Any idea will be wellcomed.

thanks a lot, and sorry for my English, Sergio.