title: Can I use System.Net.Sockets.TcpListener on Windows phone 7.1
body: <p>I am developing a windows phone application and I need to use the <code>"System.Net.Sockets.TcpListener"</code> class but there is no such class when developing for the Windows Phone.</p>
  
  <ul>
  <li>Can someone suggest to me how can I use it?</li>
  <li>do I need to add some reference or it's not possible at all?</li>
  </ul>