static void Main(string[] args)
{
IPAddress serverip = IPAddress.Parse("140.112.18.202");
int port = 800;
IPEndPoint serverhost = new IPEndPoint(serverip, port);
TcpListener tcpl = new TcpListener(serverhost);
Console.WriteLine("Server started at: " + serverhost.Address.ToString() + " port:" + port);
listener2 lc = new listener2(tcpl);
lc.startup();
}