ObjFW  Diff

	if (fcntl(_socket, F_SETFL, flags) == -1)
		@throw [OFSetOptionFailedException exceptionWithObject: self
								 errNo: errno];

	_canBlock = canBlock;
#elif defined(OF_WINDOWS)
	u_long v = canBlock;
	u_long v = !canBlock;

	if (ioctlsocket(_socket, FIONBIO, &v) == SOCKET_ERROR)
		@throw [OFSetOptionFailedException
		    exceptionWithObject: self
				  errNo: OFSocketErrNo()];

	_canBlock = canBlock;