/* Send out a NodeState request message for this electable node. */
MessageExchange me = stateProtocol.new MessageExchange
(repNode.getSocketAddress(),
NodeStateService.SERVICE_NAME,
stateProtocol.new NodeStateRequest(repNode.getName()));
me.run();
ResponseMessage resp = me.getResponseMessage();
if (resp instanceof NodeStateResponse) {
NodeStateResponse response = (NodeStateResponse) resp;
notifyJoin(new JoinGroupEvent(response.getNodeName(),
response.getMasterName(),