title: How to listen to a TCP port which is already being listened by another app
body: <p>I've a plugin which always listening to the port 6002, and i have an ASP.net application which sending messages to the same port and receiving the reply from the plugin on the same port,
  Sending is working fine, and the plugin sends a reply on the same port but i don't know how to  catch this reply, when i try to listen to the same port using <a href="http://msdn.microsoft.com/en-us/library/system.net.sockets.tcplistener.aspx" rel="nofollow">Tcplistener</a> the start method throws this exception : Only one usage of each socket address (protocol/network address/port) is normally permitted,</p>
  
  <p>is there any way to catch the received message
  Thanks</p>