C# TcpListener for communication with Processing...

using System;
using System.Net;
using System.Net.Sockets;
using System.Threading;     //
using UnityEngine;          // Using Unity 2017.1.0f3
                            //

//Called when the application started
void Start()
{

        //Create another thread for the networking (I don't want to block the main thread in C# too)
        thisServer = new TcpListener(IPAddress.Any, PORT);
        serverThreadStart = new ThreadStart(ServerThread);
        serverThread = new Thread(serverThreadStart);

        //Start the TcpServer
        serverThread.Start();

}

//The server thread
void ServerThread() {

        //The reading buffer and the data
        Byte[] bytes = new Byte[1024];
        String data = null;

        //Wait for the client here after he is disconnected too
        while (true) {

            //Try to accept the incoming client
            connectedClient = thisServer.AcceptTcpClient();

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

            //The data size
            int i;

            //Try to receive data from client while its connected to the server(this)
            while (connectedClient.Connected) {

                //Dont try with data encoding id its null
                if ((i = stream.Read(bytes, 0, bytes.Length)) != 0) {

                    //Get the track data and decode it / encode to ASCII
                    data = System.Text.Encoding.ASCII.GetString(bytes, 0, i);

                    Debug.Log(data /*The message from processing*/);

                }

            }

        }

    }