namespace tcplistener_console
{
    class Program
    {
        static int Main(string[] args)
        {
            Console.Write(“tcplistener by hvivani – 20110225 – para el negro: \r\n”);
            if (args.Length == 0)
            {
                System.Console.WriteLine(“Parametros: Puerto IP   \r\n”);
                System.Console.WriteLine(“Ejemplo: tcplistener 2525 127.0.0.1  \r\n”);
                System.Console.WriteLine(“si tenes mas de una interfaz de red, usa la ip de dicha interfaz.  \r\n”);
                return 1;
            }

            TcpListener server = null;
            // Set the TcpListener on port.
            Int32 port = int.Parse(args[0]);
            IPAddress localAddr = IPAddress.Parse(args[1]);

            // TcpListener server = new TcpListener(port);
            server = new TcpListener(localAddr, port);

            // Start listening for client requests.
            server.Start();

            // Buffer for reading data
            Byte[] bytes = new Byte[256];
            String data = null;

            // Enter the listening loop.
            while (true)
            {
                Console.Write(“Waiting for a connection… “);

                // Perform a blocking call to accept requests.
                // You could also user server.AcceptSocket() here.
                TcpClient client = server.AcceptTcpClient();
                Console.WriteLine(“Connected!”);

                data = null;

                // Get a stream object for reading and writing
                NetworkStream stream = client.GetStream();

                int i;

                // Loop to receive all the data sent by the client.
                while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
                {
                    // Translate data bytes to a ASCII string.
                    data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);
                    Console.WriteLine(“Received: {0}”, data);

                    // Process the data sent by the client.
                    data = data.ToUpper();

                    byte[] msg = System.Text.Encoding.ASCII.GetBytes(data);

                    // Send back a response.
                    //stream.Write(msg, 0, msg.Length);
                    //Console.WriteLine(“Sent: {0}”, data);
                }

                // Shutdown and end connection
                client.Close();
                }