[jboss-jira] [JBoss JIRA] Created: (JGRP-515) UDP.java requires the multicast address in the multicastsocket constructor to fix crosstalk on certain operating systems

[ggimler (JIRA)]

UDP.java requires the multicast address in the multicastsocket constructor to fix crosstalk on certain operating systems
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                 Key: JGRP-515
                 URL: http://jira.jboss.com/jira/browse/JGRP-515
             Project: JGroups
          Issue Type: Patch
         Environment: Tested on Fedora Core 6, JDK 1.5.0_10
            Reporter: ggimler
         Assigned To: Bela Ban


I'm submitting a patch for a crosstalk issue described below.


I'm trying to debug a problem I'm seeing when running JGroups on the
same network/machine as another application that is sending/receiving
data via regular multicast (not through JGroups).  I'm using version
2.4.1-SP3.  My scenario is as follows...

JGroups send on 228.0.0.1:50000
JGroups receive on 228.0.0.1:50000

This works fine.  When I start up another application that does

Sends regular multicast on 228.0.0.2:50000
Receives regular multicast on 228.0.0.2:50000

Then the JVM with the JGroups sender/receiver complains with:

May 15, 2007 4:47:59 PM org.jgroups.protocols.TP handleIncomingPacket
WARNING: packet from 192.168.101.133:36594 has different version
(26725) from ours (2.4.1). Packet is discarded

The patch is in UDP.java:







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