ioctlsocket
return ioctlsocket(sock, FIONBIO, (const void *)&one);
if (ioctlsocket(fd, FIONBIO, (const void *) &one))
#define ioctl ioctlsocket
ioctlsocket(sockfd, FIONBIO, &nonblock);
ioctlsocket(sockfd, FIONBIO, &block);
err = ioctlsocket( s, FIONBIO, &iostatus );