public static extern int WSAStartup(ushort wVersionRequested, ref WSAData lpWSAData);
public static extern int WSAStartup(ushort wVersionRequested, ref WSAData lpWSAData);
public static extern int WSAStartup(ushort wVersionRequested, ref WSAData lpWSAData);
public static extern int WSAStartup(ushort wVersionRequested, ref WSAData lpWSAData);