Join discovery/broadcast groups from client.

[ebmmaxis2007]

Can the the discovery groups and broadcast groups specified in the hornet xml configuration be joined by an external client?

The provided standalone-full-ha.xml file has the following:

              <broadcast-groups>

                    <broadcast-group name="bg-group1">

                        <socket-binding>messaging-group</socket-binding>

                        <broadcast-period>5000</broadcast-period>

                        <connector-ref>

                            netty

                        </connector-ref>

                    </broadcast-group>

                </broadcast-groups>

                <discovery-groups>

                    <discovery-group name="dg-group1">

                        <socket-binding>messaging-group</socket-binding>

                        <refresh-timeout>10000</refresh-timeout>

                    </discovery-group>

                </discovery-groups>

I have tried to connect to these two groups with a separate application.  I've created a 'udp.xml' with the binding address and port identical to the 'messaging-group' socket-binding element in the standalone-full-ha.xml.

It appears to work at first, but I consistently get the following message:

Aug 19, 2014 2:41:30 PM org.jgroups.logging.JDKLogImpl warn

WARNING: JGRP000010: packet from xxx.xxx.xxx.xxx:xxxxx has different version (0.0.0) than ours (3.4.4); packet is discarded.  Is it impossible to connect to them externally?

[jbertram]

Are you talking about leveraging UDP discovery from a HornetQ client?  If so, we ship examples of this (e.g. "symmetric-cluster").  If not, please elaborate on what you're trying to accomplish.