Control the non-blocking state of the given file descriptor, according to nonblock. On most systems this uses O_NONBLOCK, but on some older ones may use O_NDELAY.
A file descriptor
If true, set the descriptor to be non-blocking
true if successful
Control the non-blocking state of the given file descriptor, according to nonblock. On most systems this uses O_NONBLOCK, but on some older ones may use O_NDELAY.