[DllImport("ws2_32.dll", SetLastError = true)]
public static extern int WSAIoctl(
IntPtr s,
uint dwIoControlCode,
IntPtr lpvInBuffer,
uint cbInBuffer,
IntPtr lpvOutBuffer,
uint cbOutBuffer,
ref uint lpcbBytesReturned,
IntPtr lpOverlapped,
IntPtr lpCompletionRoutine
);