Создание чата между двумя компьютерами через интернет

// Отправка сообщения messageText 
void Send(){
 int myPort = 3000;
 string myIP = "46.75.64.89"; // мой ip
 string receiverIP = "46.45.65.84"; // ip получателя
 string messageText =  "Hello, World!";
 
 IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(receiverIP), myPort); 
 Socket sendSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 sendSocket.Connect(endPoint);
 
 Byte[] sendBytes = Encoding.Default.GetBytes(messageText);
 sendSocket.Send(sendBytes);
 sendSocket.Close();
}
 
// Получение сообщения receivedMessage
void Receive(){
 int myPort = 3000;
 
 Socket listen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse("0.0.0.0"), myPort);
 listen.Bind(endPoint);
 listen.Listen(10);
 
 Socket receiveSocket;
 
 while (true)
 {
  //Пришло сообщение
  receiveSocket = listen.Accept();
  Byte[] receive = new Byte[256];
 
  using (MemoryStream messager = new MemoryStream())
  {
   Int32 receivedBytes;
 
   do{
    receivedBytes = receiveSocket.Receive(receive, receive.Length, 0);
    messager.Write(receive, 0, receivedBytes);
   } while (receiveSocket.Available > 0);
 
   // Пришедшее сообщение
   string receivedMessage = Encoding.Default.GetString(messager.ToArray());
  }
 }
}