using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Threading;
using System.Net;
using System.Net.Sockets;
using System.IO;

namespace TCPserverTutorial
{
    public partial class Form1 : Form
    {

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void bStartServer_Click(object sender, EventArgs e)
        {
            Thread tcpServerRunThread = new Thread(new ThreadStart(TCPServerRun));
            tcpServerRunThread.Start();
        }

        private void TCPServerRun()
        {
            TcpListener tcpListener = new TcpListener(IPAddress.Any, 2016);
            tcpListener.Start();
            updateUI("Listening");
            while (true)
            {

                TcpClient client = tcpListener.AcceptTcpClient();
                updateUI("Connected");
                Thread tcpHandlerThread = new Thread(new ParameterizedThreadStart(tcpHandler));
                tcpHandlerThread.Start(client);
            }
        }

        private void tcpHandler(object client)
        {
            TcpListener tcpListener = new TcpListener(IPAddress.Any, 5004);
            TcpClient mClient = (TcpClient)client;
            NetworkStream stream =  mClient.GetStream();
            byte[] message = new byte[1024];
            stream.Read(message,0, message.Length);
            updateUI("New message = " + Encoding.ASCII.GetString(message));
            //stream.Close();
            //mClient.Close();
       }
        private void updateUI(string s)
        {
            Func<int> del = delegate ()
            {
                textBox1.AppendText(s + System.Environment.NewLine);
                return 0;
            };
            Invoke(del);
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }
    }
}