[jboss-jira] [JBoss JIRA] Created: (JGRP-1263) org.jgroups.protocols.UDP - failed sending message to null

[Adrian Tarau (JIRA)]

org.jgroups.protocols.UDP - failed sending message to null
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                 Key: JGRP-1263
                 URL: https://issues.jboss.org/browse/JGRP-1263
             Project: JGroups
          Issue Type: Bug
    Affects Versions: 2.10
         Environment: Linux, Java 1.6.18 32bit
            Reporter: Adrian Tarau
            Assignee: Bela Ban


This occurs random and affect the notification mechanism built in our application. 

Looking in TP

// Don't send if destination is local address. Instead, switch dst and src and send it up the stack.
        // If multicast message, loopback a copy directly to us (but still multicast). Once we receive this,
        // we will discard our own multicast message
        Address dest=msg.getDest();
        if(dest instanceof PhysicalAddress) {
            // We can modify the message because it won't get retransmitted. The only time we have a physical address
            // as dest is when TCPPING sends the initial discovery requests to initial_hosts: this is below UNICAST,
            // so no retransmission
            msg.setDest(null);
        }

        final boolean multicast=dest == null || dest.isMulticastAddress();
        if(loopback && (multicast || dest.equals(msg.getSrc()))) {
              .....
        }

you can notice that it will fail if dest == null when doing the equal. 

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