Created attachment 709544 [details]
rhq-server.properties

Description of problem:
I have successfully configured the RHQ server on IPv6 but the agent is not able to poll the server so the registration process fails and the agent gets stuck on "The agent will now wait until it has registered with the server..."

Version-Release number of selected component (if applicable):
Version: 4.7.0-SNAPSHOT
Build Number: 2174d4c

How reproducible:
Always

Steps to Reproduce:
1. configure the server to use IPv6:
  a) change the rhq-server.sh to use following java opts -Djava.net.preferIPv4Stack=false -Djava.net.preferIPv6Addresses=true for starting the server
  b) use previous java opts for the rhq-installer.sh as well
  c) prepare the rhq-server.properties (look at attached example)
  d) change the rhq-server.sh - line 471 should look like this:
export RHQ_SERVER_HOME; ${RHQ_SERVER_HOME}/bin/rhq-installer.sh --reconfig --host=::1 &
(i'm not sure if this is necessary)
  e) run the server - ./rhq-server.sh start
  f) run the installer - ./rhq-installer.sh --host=::1       

2. configure the agent to use IPv6:
  a)change the rhq-agent.sh to use following java opts -Djava.net.preferIPv4Stack=false -Djava.net.preferIPv6Addresses=true
  b) enable debug mode
  c) run the agent with a clean config - ./rhq-agent.sh -L
  d) use IPv6  

  
Actual results:
the agent gets stuck on "The agent will now wait until it has registered with the server..."
And the agent log ends with:
2013-03-13 06:21:53,358 DEBUG [RHQ Server Polling Thread] (jboss.remoting.transport.http.HTTPClientInvoker)- Unable to retrieve response message
java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
        at java.net.Socket.connect(Socket.java:546)
        at sun.net.NetworkClient.doConnect(NetworkClient.java:173)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:409)
        at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
        at sun.net.www.http.HttpClient.<init>(HttpClient.java:240)
        at sun.net.www.http.HttpClient.New(HttpClient.java:321)
        at sun.net.www.http.HttpClient.New(HttpClient.java:338)
        at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:935)
        at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:876)
        at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:801)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1139)
        at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:397)
        at java.net.HttpURLConnection.getResponseMessage(HttpURLConnection.java:463)
        at org.jboss.remoting.transport.http.HTTPClientInvoker.useHttpURLConnection(HTTPClientInvoker.java:340)
        at org.jboss.remoting.transport.http.HTTPClientInvoker.transport(HTTPClientInvoker.java:137)
        at org.jboss.remoting.MicroRemoteClientInvoker.invoke(MicroRemoteClientInvoker.java:122)
        at org.jboss.remoting.Client.invoke(Client.java:1634)
        at org.jboss.remoting.Client.invoke(Client.java:548)
        at org.rhq.enterprise.communications.command.client.JBossRemotingRemoteCommunicator.rawSend(JBossRemotingRemoteCommunicator.java:514)
        at org.rhq.enterprise.communications.command.client.JBossRemotingRemoteCommunicator.sendWithoutCallbacks(JBossRemotingRemoteCommunicator.java:456)
        at org.rhq.enterprise.communications.command.client.JBossRemotingRemoteCommunicator.sendWithoutInitializeCallback(JBossRemotingRemoteCommunicator.java:475)
        at org.rhq.enterprise.communications.command.client.JBossRemotingRemoteCommunicator.send(JBossRemotingRemoteCommunicator.java:496)
        at org.rhq.enterprise.communications.command.client.AbstractCommandClient.invoke(AbstractCommandClient.java:143)
        at org.rhq.enterprise.communications.command.client.ClientCommandSender.send(ClientCommandSender.java:1091)
        at org.rhq.enterprise.communications.command.client.ServerPollingThread.run(ServerPollingThread.java:115)
2013-03-13 06:21:53,363 DEBUG [RHQ Server Polling Thread] (enterprise.communications.command.client.ServerPollingThread)- {ServerPollingThread.server-poll-failure}Failed to successfully poll the server. This is normally due to the server not being up yet. You can usually ignore this message since it will be tried again later, however, you should ensure this failure was not really caused by a misconfiguration. Cause: org.jboss.remoting.CannotConnectException:Can not connect http client invoker. Connection refused. -> java.net.ConnectException:Connection refused



Expected results:
Agent is registered with the server.




Additional info:
The cause could be that rhq-agent/lib/jboss-remoting-2.2.2.SP8.jar doesn't support the IPv6 (this should be confirmed by someone)

I noticed in the agent's log following:
2013-03-13 06:21:53,229 DEBUG [main] (org.rhq.enterprise.communications.ServiceContainer)- {ServiceContainer.connector-uri}Connector is using locator URI of [InvokerLocator [socket://10.16.23.190/?backlog=200&clientMaxPoolSize=304&enableTcpNoDelay=true&maxPoolSize=303&numAcceptThreads=1&rhq.communications.connector.rhqtype=agent&socketTimeout=60000]]

there is a IPv4 (10.16.23.190) but ~/.java/.userPrefs/rhq-agent/default/prefs.xml contains only IPv6. We suspect that jboss-remoting library changed IPv6 to IPv4