public class TCPIP
    {
 
        public static Receiver rc = new Receiver();
 
        public class Receiver
        {
 
            public delegate void ReceivedEventHandler(string ReceivedText, _
              string Sender);
 
            public event ReceivedEventHandler Received;
 
            public void Start()
            {
 
                System.Threading.Thread th = new System.Threading.Thread( _
                  internals);
                th.Start();
            }
 
            private void internals()
            {
 
                TcpListener _listener = new TcpListener(1993);
                _listener.Start();
 
                while (true)
                {
 
                    TcpClient rcclient = _listener.AcceptTcpClient();
                    StreamReader reader = new StreamReader(rcclient.GetStream( _
                      ));
 
                    string msg = "";
 
                    while (reader.Peek() > -1)
                    {
                        msg += Convert.ToChar(reader.Read()).ToString();
                    }
 
                    Received(msg, rcclient.Client.RemoteEndPoint.ToString( _
                      ).Split(Convert.ToChar(":"))[0]);
 
                    // Cleanup
                    rcclient.Close();
                    reader.Close();
 
                }
 
            }
        }
 
    }