Code Forums - View Single Post - how do I know if a server (on the box) is running?

kyoryu · 04-28-2006, 07:27 AM

You want to tell if you've successfully connected or not, correct?

1) connect() will return < 0 if it fails.
2) if you select on a socket, and it returns readable but has no data, it is closed. It helps to think of select not as determining "do I have data available", but "will I block if I do this?" A closed socket won't block, so it will always return as readable and writable.

04-28-2006, 07:27 AM	#5 (permalink)
kyoryu Registered User Join Date: Apr 2003 Posts: 34	You want to tell if you've successfully connected or not, correct? 1) connect() will return < 0 if it fails. 2) if you select on a socket, and it returns readable but has no data, it is closed. It helps to think of select not as determining "do I have data available", but "will I block if I do this?" A closed socket won't block, so it will always return as readable and writable.