Android client for SignalR does not receive but JS does <p>The Question is very simple. It is as a hello world app but i can't find the solution. I have googled it very much but nothing!</p> <p>This is the code on the client:</p> <pre><code>public class MainActivity extends ActionBarActivity { HubProxy proxy; EditText messageText; TextView resultText; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Platform.loadPlatformComponent(new AndroidPlatformComponent()); //Setup connection String server = "http://10.0.2.2:8081/"; HubConnection connection = new HubConnection(server); proxy = connection.createHubProxy("chatHub"); Toast.makeText(getApplicationContext(),proxy.toString(),Toast.LENGTH_SHORT).show(); resultText = (TextView) findViewById(R.id.resultText); //Start connection SignalRFuture&lt;Void&gt; awaitConnection = connection.start(); //--HERE IS WHERE I AM NOT SURE HOW TO SET IT UP TO RECEIVE A NOTIFICATION--- //Setup to receive broadcast message proxy.on("SimpleMessage", new SubscriptionHandler1&lt;String&gt;() { @Override public void run(String s) { resultText.setText(resultText.getText()+"\n"+s.toString()); Toast.makeText(getApplicationContext(), "message recieved: "+s.toString(), Toast.LENGTH_LONG).show(); } } , String.class); proxy.on("Alert", new SubscriptionHandler() { @Override public void run() { Toast.makeText(getApplicationContext(), "Alert Recieved!!!", Toast.LENGTH_LONG).show(); //resultText.setText(resultText.getText()+"\nAlert Recieved!!!"); } }); //--------------------------------------------------------------------------- proxy.subscribe(this); try { awaitConnection.get(); Toast.makeText(getApplicationContext(), "success", Toast.LENGTH_LONG).show(); } catch (InterruptedException e) { Toast.makeText(getApplicationContext(), "un success", Toast.LENGTH_LONG).show(); } catch (ExecutionException e) { Toast.makeText(getApplicationContext(), "in success: " + e.getMessage().toString(), Toast.LENGTH_LONG).show(); } messageText = (EditText) findViewById(R.id.messageText); Button sendBTN = (Button) findViewById(R.id.sendBTN); sendBTN.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { try { String textToSend = messageText.getText().toString(); proxy.invoke("Send", "Android", textToSend ).get(); } catch (InterruptedException e) { // Handle ... } catch (ExecutionException e) { // Handle ... } } }); } public void Alert(){ Toast.makeText(getApplicationContext(), "Alert Recieved!!!", Toast.LENGTH_LONG).show(); //resultText.setText(resultText.getText()+"\nAlert Recieved!!!"); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } } </code></pre> <p>I think the mistake is in this code and therefore i do not append the code of the server and the JS client. So please tell me any thing may help me!</p> <p>Thanks in advance.</p>