[jboss-jira] [JBoss JIRA] Created: (JGRP-1332) MuxRpcDispatcher: use of topics disturbs invocations

[Benoit Leblanc (JIRA)]

MuxRpcDispatcher: use of topics disturbs invocations
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                 Key: JGRP-1332
                 URL: https://issues.jboss.org/browse/JGRP-1332
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 2.12.1
            Reporter: Benoit Leblanc
            Assignee: Bela Ban


Scenario 1 : Let's A and B be 2 jgroups members connected to the same channels "rpc". Member A uses an
 MuxRpcDispatcher with topic id 1 and Member B uses an MuxRpcDispatcher with different topic id, 2 for example. Channel configuration file is « udp.xml ».

When Member A sends a multicast rpc call (mode = GET_ALL) with no filter (null), I observed that server object on member B was invoked although it doesn't have the same topic as caller from member A.

To better observe invocations, I deployed the attached sample program (Launcher.java) on different machine (member A hosted by 192.168.46.36 and member B hosted by 192.168.46.38) and disable local invocation on channel ( channel.setOpt(Channel.LOCAL, false);). I also use a kind of jgroups sniffer (on host of member B) that logs members exchange. See enclosed file RpcTopic-1ToTopic_2_NoMuxUpHandler.log). Note that topic should be different, so you need to modify sample code before execution on member A or B.

Scenario 2: roughly, the same as the previous one. Just set an UpHandler to the channel :


channel.setUpHandler(new MuxUpHandler());

I observed that:
- Object server on member B wasn't invoked (expected behavior).
- Member B didn't respond at all. May be it should send back an ack. See RpcTopic-1ToTopic_2_WithMuxUpHandler.log file.
- The invoker (or caller) runs until the timeout kicks in. Or block for ever if timeout = 0. Execution shouldn't runs out "immediately" ?

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