Android Client for WebSocket Message Broker

Question

I need to manage a single WebSocket connection in a Android application. For this I implemented a web application where set up a WebSocket Message Broker using Spring, as its quick start.

The problem is that I could not make a connection in my Android application. I'm using Autobahn Android, but I can not connect to subscribe and publish on topics (like SockJS with STOMP).

Server (Spring):

<websocket:message-broker application-destination-prefix="/app"> <websocket:stomp-endpoint path="/ws"></websocket:stomp-endpoint> <websocket:simple-broker prefix="/topic"/> </websocket:message-broker>

@Controller
public class MessageController {
    @MessageMapping("/ws")
    @SendTo("/topic/poc")
    public MyEntity proofOfConcept(String message) throws Exception {
        return new MyEntity(message);
    }
}

Client (Autobahn Android):

final String wsuri = "ws://" + HOSTNAME + ":" + PORT + "/myapp/ws";
mConnection.connect(wsuri, new Wamp.ConnectionHandler() {
     @Override
     public void onOpen() {
        mConnection.subscribe("/myapp/ws/topic/poc", MyEntity.class, new Wamp.EventHandler() {
            @Override
            public void onEvent(String topicUri, Object event) { }
        });
     }
     @Override
     public void onClose(int code, String reason) {
        // ERROR: Could not connect to /HOSTNAME...
     }
});

I managed to connect using simple handlers of spring instead of message broker, but that limits me to "listen" only one endpoint per connection... Could anyone help me please?

Answer 1

AutobahnAndroid implements WebSocket and WAMP, not STOMP. Different from STOMP, WAMP provides both Publish & Subcribe and Remote Procedure Calls.

For using WAMP, you will need a WAMP Router. You can find client and router implementations for WAMP here.