using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Threading;


namespace ConsoleApp5
{
    class Program
    {

        static void Main(string[] args)
        {
            //zad1

            Console.WriteLine("Hello World!");
            ThreadPool.QueueUserWorkItem(ThreadProcSrv, new object[] { 1500 });
            ThreadPool.QueueUserWorkItem(ThreadProcClientOne, new object[] { 2000 });
            //Thread.Sleep(2800);




        }


        static void ThreadProcSrv(Object stateInfo)
        {
            TcpListener server = new TcpListener(IPAddress.Any, 2048);
            server.Start();

            while (true)
            {
                TcpClient client = server.AcceptTcpClient();
                byte[] buffer = new byte[1024];
                client.GetStream().Read(buffer, 0, buffer.Length);
                client.GetStream().Write(buffer, 0, buffer.Length);
            }

        }

        static void ThreadProcClientOne(Object stateInfo)
        {
            TcpClient client = new TcpClient();
            client.Connect("127.0.0.1", 2048);
            NetworkStream stream = client.GetStream();
            byte[] message = new byte[1024];
            char[] a = "A".ToCharArray();
            message[0] = (byte)a[0];
            stream.Write(message, 0, message.Length);

        }

        //static void ThreadProcClientTwo(Object stateInfo)
        //{


        //}

    }

}