title: Bypass the proxy using TcpClient
body: <p>I'm trying to write a local proxy application. I know how proxy applications work in theory. 
  I've done everything related to handle incoming connections. But the problem is how should I send request which client requested to specified Url. When I try to create a connection with <code>TcpClient</code> to specified Url and port, it throws following exception :</p>
  
  <blockquote>
    <p>No such host is known</p>
  </blockquote>
  
  <p><strong>Edit :</strong> I think I should bypass the proxy something like FireFox is doing even system proxy set.</p>
  
  <p>Any idea will be helpful.
  Thanks in advance.</p>