private static void message_listener(Socket sock)
        {
            byte[] m_buffer = new byte[5000];
            sock.BeginReceive(m_buffer, 0, m_buffer.Length, SocketFlags.None, ar => { int dat=sock.EndReceive(ar); processdata(m_buffer, dat); }, null);
         }

        private static void processdata(byte[] r_buffer,int dat)
        {
            Console.Write("Data Received: " + dat);
        }