dd

      TcpListener listener = new TcpListener("localHost", 10000); //1st is an ip address, 2nd is post number
      listener.Start();

      while (!bStopServer)
      {
        try
        {
          if (listener.Pending())
          {
            using (TcpClient client = listener.AcceptTcpClient())
            {
              using (NetworkStream ns = client.GetStream())
              {
                 // Check to see if this NetworkStream is readable.
                if (ns.CanRead)
                {
                  byte[] buffer = new byte[1024];
                  int allBytesRead = 0;

                  // Incoming message may be larger than the buffer size:
                  do
                  {
                    allBytesRead = ns.Read(buffer, 0, buffer.Length);
                    if (allBytesRead == 0)
                    {
                      //client has left!
                    }
                  }
                  while (ns.DataAvailable);
                }
              }
            }
          }
        }
        catch (Exception ex)
        {
          MessageBox.Show(ex.Message);
        }
      }