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“How to set TCPListener to always listen and when new connection discard current” Code Answer

How to set TCPListener to always listen and when new connection discard current

csharp by Andy79

on Dec 11 2020 Comment

private static void Listener()
{
       TcpListener server = null;
        try
        {
                // Set the TcpListener on carPort.
                var port = 5001;
                var ipAddress = IPAddress.Parse("192.168.0.1");
                // TcpListener server = new TcpListener(port);
                server = new TcpListener(ipAddress, port);

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

                // Buffer for reading data
                var bytes = new byte[256];

                // Enter the listening loop.
           	while (true)
           	{
                    Console.Write("Waiting for a connection... \n");

                    // Perform a blocking call to accept requests.
                    var client = server.AcceptTcpClient();

                  if (client.Connected)
                  {
                        Console.WriteLine("Connected!");

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

                   	while (true)
                   	{

                          if (stream.DataAvailable)
                          {
                                // Loop to receive all the data sent by the client.
                                var i = stream.Read(bytes, 0, bytes.Length);
                                var data = Encoding.ASCII.GetString(bytes, 0, i);

                                Console.WriteLine("Received: {0}", data);

                                var ba  = Encoding.ASCII.GetBytes("\nData Received\n");
                                stream.Write(ba, 0, ba.Length);
                           }
                           else
                           {
                                if (!server.Pending()) continue;
                                Console.WriteLine("found new client");
                                break;
                           }


                       }

                        Console.WriteLine("Client close");
                        // Shutdown and end connection
                        client.Close();
                  }
                    Thread.Sleep(100);
             }
       }
       catch (SocketException e)
       {
            Console.WriteLine("SocketException: {0}", e);
       }
       finally
       {
                    // Stop listening for new clients.
            Console.WriteLine("Stop listening for new clients.");
            server?.Stop();
       }

 }
// see original on the page -> https://stackoverflow.com/questions/35322605/how-to-set-tcplistener-to-always-listen-and-when-new-connection-discard-current

Source: stackoverflow.com

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