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  1. JGroups
  2. JGRP-515

UDP.java requires the multicast address in the multicastsocket constructor to fix crosstalk on certain operating systems

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    • Icon: Patch Patch
    • Resolution: Won't Do
    • Icon: Major Major
    • 2.5
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      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:

        1. mcreceive.c
          4 kB
          Bela Ban
        2. mcsend.c
          3 kB
          Bela Ban
        3. UDP.java
          37 kB
          ggimler

              rhn-engineering-bban Bela Ban
              ggimler_jira ggimler (Inactive)
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                Created:
                Updated:
                Resolved: