title: Really simple TCP client
body: <p>I want with my app to enter in the url of my server e.g. <code>http://192.168.1.8/</code> and the port e.g. <code>1234</code>.
  When my server receives the TCP Request message, it sends back a file (the server is already implemented).</p>
  
  <p>I think that I don't need something complicated like an AsyncTask, as I do not want to keep the connection. Receiving the answer from the server, my connection must be closed.</p>
  
  <p>Any indication for a way forward or a tip is highly appreciated.</p>