About socket programming

Is this the same code as in your Problem at second connection attempt?

My all codes are below;

server

public void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
            thread_dinleyici = new Thread(new ThreadStart(dinle));
            thread_dinleyici.Start();
        }

        public void dinle()
        {
            tcp_listener = new TcpListener(IPAddress.Any,4444);
            tcp_listener.Start();
            istemcisoketi = tcp_listener.AcceptSocket();
            karsi_ip = ((IPEndPoint)istemcisoketi.RemoteEndPoint).Address.ToString();
            while (istemcisoketi.Connected)
            {
                ag_akimi = new NetworkStream(istemcisoketi);
                akim_okuyucu = new StreamReader(ag_akimi);
                akim_yazici = new StreamWriter(ag_akimi);
                try
                {
                    gelen_veri = akim_okuyucu.ReadLine();
                    if (gelen_veri.EndsWith("??"))
                    {
                        yaz_gonder(gelen_veri);
                        istemcisoketi.Close();
                    }
                }
                catch
                {
                    return;
                }
            }
        }
********************************************
client

private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;

            thread_dinle = new Thread(new ThreadStart(dinle));
            thread_dinle.Start();
          
        }

        public void dinle()
        {
            tcp_listener = new TcpListener(IPAddress.Any, 3333);
            tcp_listener.Start();
            istemcisoketi = tcp_listener.AcceptSocket();

           while(istemcisoketi.Connected)
           {
                    ag_akimi = new NetworkStream(istemcisoketi);
                    akim_okuyucu = new StreamReader(ag_akimi);
                    try
                    {
                        gelen_veri += akim_okuyucu.ReadLine();
                        textBox1.Text = gelen_veri;
                    }
                    catch
                    {
                        return;
                    }
           }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBox1.Text = "";
            TcpClient gonder = new TcpClient("192.168.1.222", 4444);
            NetworkStream ag_akimi = gonder.GetStream();
            akim_yazici = new StreamWriter(ag_akimi);

            akim_yazici.WriteLine(textBox2.Text+"??");
            akim_yazici.Flush();
            ag_akimi.Close();
            akim_yazici.Close();
        }