title: socketio namespace client "CONNECTION REFUSED"
body: <p>I have a problem with a weird socketio behavior, I don't want to post the whole context and problem. When I write:
  Server side :</p>
  
  <pre><code>this.io.on('connection....
  </code></pre>
  
  <p>Client side:
      intance = io();</p>
  
  <p>I have not connection problem everything is working. When I write
  server side:</p>
  
  <pre><code>this.io.of('/data).on('connection....
  </code></pre>
  
  <p>client side:</p>
  
  <pre><code>instance = io('/data);
  </code></pre>
  
  <p>Everything goes work the client is popping "CONNECTION REFUSED". So I really don't understand. If anyone have an idea, out of context, of what it could be... </p>