HubConnection.getConnectionId（）在android中的signalR中返回null

Question

我正在使用signalR java客户端，我正在使用此方法连接主机 但是获得协商异常和connectionid returs null

connection = new HubConnection(host);
        hub = connection.createHubProxy("Chat");
                hub.subscribe(MainActivity.this);

        hub.on("addChatMessage", new SubscriptionHandler() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Log.e("test", "entered in hub.on method");
            }
        });



        // connection.start();
        SignalRFuture<Void> awaitConnection = connection.start();
        try {
            awaitConnection.get();
        } catch (InterruptedException e) {
            Log.e("<<<Exception>>>",  ""+ e.toString() + "<<<>>>"
                    + e.getMessage());
        } catch (ExecutionException e) {
            Log.e("<<<Exception>>>", "" + e.toString() + "<<<>>>"
                    + e.getMessage());
        }
        Log.e("", "connectionId : "+ connection.getConnectionId());

Answer 1

hub = connection.createHubProxy("wallpostChat");
hub.subscribe(MainActivity.this);

hub.on("addChatMessage", new SubscriptionHandler() {

    @Override
    public void run() {
        // TODO Auto-generated method stub
        Log.e("test", "entered in hub.on method");
    }
});