/// <summary>
/// 获取扩展函数指针
/// </summary>
/// <param name="guid">扩展函数标识</param>
/// <param name="type">函数类型</param>
/// <param name="socket">socket 指针</param>
/// <returns>函数指针</returns>
public static Delegate SioGetExtensionFunctionPointer(Guid guid, Type type, IntPtr socket)
{
IntPtr funPointer = IntPtr.Zero;
int byteTransfered = 0;
SocketError nErrorCode = UnsafeNativeMethods.WSAIoctl(socket, NativeMethods.SIO_GET_EXTENSION_FUNCTION_POINTER, ref guid, Marshal.SizeOf(guid), ref funPointer, IntPtr.Size, out byteTransfered, NativeMethods.NULL, NativeMethods.NULL);
if (nErrorCode != SocketError.Success)
{
throw new SocketException((int)nErrorCode);
}
return(Marshal.GetDelegateForFunctionPointer(funPointer, type));
}
