unset_nonblock
unset_nonblock(fd);
unset_nonblock(fd);
unset_nonblock(sockfd);
unset_nonblock(sockfd);
int unset_nonblock(int);
unset_nonblock(fd);
unset_nonblock(remout);
unset_nonblock(remin);
if (unset_nonblock(*newsock) == -1) {