HornetQ core bridge does not failover from live to backup. I wrote this test during trying to verify bz#900764. But this appears to be a little different scenario.

Test scenario:
1. Start two EAP 6.1.0.ER6 servers - HornetQ live/backup pair with deployed OutQueue
2. Start third EAP 6.1.0.ER6 which has deployed HQ core bridge and InQueue:
                <bridges>
                    <bridge name="myBridge">
                        <queue-name>jms.queue.InQueue</queue-name>
                        <forwarding-address>jms.queue.OutQueue</forwarding-address>
                        <ha>true</ha>
                        <reconnect-attempts>-1</reconnect-attempts>
                        <use-duplicate-detection>true</use-duplicate-detection>
                           <discovery-group-ref discovery-group-name="dg-group1"/>
                    </bridge>
                </bridges>
3. Start producer which sends messages to InQueue to third server
4. Start consumer which reads messages from OutQueue from first live server
5. Kill first live server
6. Check whether consumer from step 4. is still receiving messages from OutQueue. This will verify that HQ core bridge and consumer failovered to backup.

Result:
After step 6. consumer failovered to backup but can't read any more messages. HQ core bridge did not failover.

Console log from third server:
20:38:47,765 INFO  [org.hornetq.core.server] (Thread-2 (HornetQ-server-HornetQServerImpl::serverUUID=918186ea-b5b1-11e2-81e1-77319a9992e3-2075307577)) HQ221027: Bridge BridgeImpl@1a349871 [name=myBridge, queue=QueueImpl[name=jms.queue.InQueue, postOffice=PostOfficeImpl [server=HornetQServerImpl::serverUUID=918186ea-b5b1-11e2-81e1-77319a9992e3]]@73043027 targetConnector=ServerLocatorImpl [initialConnectors=[TransportConfiguration(name=netty, factory=org-hornetq-core-remoting-impl-netty-NettyConnectorFactory) ?port=5445&host=192-168-40-1], discoveryGroupConfiguration=DiscoveryGroupConfiguration{name='dg-group1', refreshTimeout=10000, discoveryInitialWaitTimeout=10000}]] is connected
20:39:29,976 WARN  [org.hornetq.core.server] (Thread-1 (HornetQ-client-global-threads-824748279)) HQ222095: Connection failed with failedOver=false: HornetQException[errorType=INTERNAL_ERROR message=HQ119005: Exception in Netty transport]
	at org.hornetq.core.remoting.impl.netty.HornetQChannelHandler.exceptionCaught(HornetQChannelHandler.java:107) [hornetq-core-client-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.jboss.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:130) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:787) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.exceptionCaught(SimpleChannelUpstreamHandler.java:153) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:112) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:560) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:555) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.Channels.fireExceptionCaught(Channels.java:525) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.socket.oio.AbstractOioWorker.run(AbstractOioWorker.java:77) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.socket.oio.OioWorker.run(OioWorker.java:51) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.util.VirtualExecutorService$ChildExecutorRunnable.run(VirtualExecutorService.java:175) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_15]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_15]
	at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_15]
Caused by: java.net.SocketException: Connection reset
	at java.net.SocketInputStream.read(SocketInputStream.java:189) [rt.jar:1.7.0_15]
	at java.net.SocketInputStream.read(SocketInputStream.java:121) [rt.jar:1.7.0_15]
	at java.net.SocketInputStream.read(SocketInputStream.java:203) [rt.jar:1.7.0_15]
	at java.io.FilterInputStream.read(FilterInputStream.java:83) [rt.jar:1.7.0_15]
	at java.io.PushbackInputStream.read(PushbackInputStream.java:139) [rt.jar:1.7.0_15]
	at org.jboss.netty.channel.socket.oio.OioWorker.process(OioWorker.java:64) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.socket.oio.AbstractOioWorker.run(AbstractOioWorker.java:73) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	at org.jboss.netty.channel.socket.oio.OioWorker.run(OioWorker.java:51) [netty-3.6.2.Final-redhat-1.jar:3.6.2.Final-redhat-1]
	... 4 more

20:39:29,985 WARN  [org.hornetq.jms.server] (Thread-3 (HornetQ-client-global-threads-824748279)) Notified of connection failure in xa discovery, we will retry on the next recovery: HornetQException[errorType=NOT_CONNECTED message=HQ119006: Channel disconnected]
	at org.hornetq.core.client.impl.ClientSessionFactoryImpl.connectionDestroyed(ClientSessionFactoryImpl.java:418) [hornetq-core-client-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.hornetq.core.remoting.impl.netty.NettyConnector$Listener$1.run(NettyConnector.java:882) [hornetq-core-client-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at org.hornetq.utils.OrderedExecutorFactory$OrderedExecutor$1.run(OrderedExecutorFactory.java:106) [hornetq-core-client-2.3.0.Final-redhat-1.jar:2.3.0.Final-redhat-1]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_15]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_15]
	at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_15]