static void Main(string[] args)
{
int port = int.Parse(Console.ReadLine());
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint destIp = new IPEndPoint(IPAddress.Parse("127.0.0.1"), port);
User user = new User();
user.Connect(socket, destIp);
}
