rosjava subscriber unreliable

edit

I have a python node that publishes a latched topic, and a rosjava subscriber running on an android device. If I start the publisher first, the subscriber receives the latched message just fine. If I start the subscriber first, it doesn't receive any messages when I start the publisher.

This could be a problem in one of at least three places:

1. My code
2. IP selection in ros.android.util.MasterChooser, although I think I've corrected this. See: https://kforge.ros.org/appmanandroid/trac/ticket/26 for more details.
3. The publisherUpdate XMR-RPC callback mechanism

I suspect #3, but I'm having a hard time tracing through the rosjava codebase to find the problem.

My subscriber code:

protected void onNodeCreate(Node node) {
   super.onNodeCreate();
   client_sub = node.newSubscriber("pr2_wifi/client_status", 
         "pr2_network_management/WifiStatus", new MessageListener<WifiStatus>() {
            public void onNewMessage(WifiStatus arg0) {
               Log.i("PR2WifiActivity", "Got client state. SSID: " + arg0.ssid);
               Handler.sendMessage(mHandler.obtainMessage(CLIENT_MSG, arg0));
            }
         }
   );
}