title: Telnet IAC command answering
body: <p>I'm trying to negotiate a telnet connection with a socket.
  The socket is working,but the server is telling me that thing:</p>
  
  <pre><code>ÿýÿýÿûÿû
  
  login:
  </code></pre>
  
  <p>The <code>ÿýÿýÿûÿû</code> means 255 253 1 255 253 31 255 251 1 255 251 3</p>
  
  <p>I read all the RFC docs but I don't understand what should I respond with to be able to send (string ascii data?) to the server, my wish is to run the login prompt successfully and then send commands to a server like "halt" or something else.</p>
  
  <p>Thanks in advance for your answer.</p>