How are ioctl() and/or fcntl() used for writing a non-blocking socket?

Question

I am trying to learn how to write a non-blocking socket. Can anyone please explain that what roles do ioctl() and fcntl() play in this (i.e. what are the roles of file descriptors in creating a non-blocking socket. A code snippet as an example with explanation will be much appreciated.

possible duplicate of [NON BLOCKING Socket](http://stackoverflow.com/questions/1525050/non-blocking-socket) — Геннадий Казачёк, Sep 23 '14 at 08:18

score 0 · Accepted Answer · answered Sep 23 '14 at 07:12

0

You use one or the other to set O_NONBLOCK. Surely you already discovered that?

answered Sep 23 '14 at 07:12

user207421

305,947
44
307
483

Thanks for replying, but yeah, I did. What I exactly want to know is the mechanism as to how it works. :) – Mac Sep 23 '14 at 08:34
Meaning what exactly? The mechanism of either is that it puts the socket into non-blocking mode. – user207421 Oct 08 '14 at 11:14
Yeah, ignore that. I got it. Thanks. – Mac Oct 09 '14 at 05:19

How are ioctl() and/or fcntl() used for writing a non-blocking socket?

1 Answers1