title: Socket.io try get wrong url
body: <p>I'm trying to connect my reveal.js client and master presentations together using socket.io server.</p>
  
  <p>I did all stuff, that Hakim Se describes on his github page, but socket.io still produces an error, while trying to connect to server.</p>
  
  <pre><code>GET http://0.0.7.156:8080/socket.io/1/?t=1393864538446 net::ERR_ADDRESS_UNREACHABLE 
  </code></pre>
  
  <p>If change 0.0.7.156 to my local machine name, query succeds.</p>
  
  <p>I think I has wrong settings of presentations, but could not understand how to fix them.</p>
  
  <p>Client:</p>
  
  <pre><code>multiplex: {
               secret: null, 
               id: 'a9e10bc1b02efafe',
               url: 'localname:1948' 
      },
  </code></pre>
  
  <p>Master:</p>
  
  <pre><code>multiplex: {
               secret: '13938623264068002486', 
               id: 'a9e10bc1b02efafe', 
               url: 'localname:1948'
      },
  </code></pre>