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From: brian@radio.UUCP
Newsgroups: comp.unix.wizards
Subject: Non-blocking accept(2) calls
Message-ID: <479@radio.toronto.edu>
Date: Wed, 2-Sep-87 01:11:04 EDT
Article-I.D.: radio.479
Posted: Wed Sep  2 01:11:04 1987
Date-Received: Fri, 4-Sep-87 06:38:12 EDT
Reply-To: brian@radio.toronto.edu.UUCP (Brian Glendenning)
Organization: Radio Astronomy, Dept. of Astronomy, U. of Toronto, Canada.
Lines: 19
Keywords: socket non-blocking BSD

The following is probably very simple, but darned if I can find it in the 
manuals :-(

I am writing a graphics "server" on our Sun (3/180, SunOs 3.4=BSD 4.2), which
I am implementing through socket i/o. When the server is not connected I would
like to poll accept(2) periodically looking for new connections. It should be
non-blocking so that it doesn't adversely affect screen activity.

So my question is - how do I make accept non-blocking? I know it can be done.
I'm quite happy with read/write being blocking, although if they must also be
non-blocking that probably wouldn't be a hardship, although my preference
would be to leave them blocking. If it matters I'm writing the application
under the SunView windowing system.

Thanks.

-- 
Brian Glendenning         UUCP   - {allegra,decvax,pyramid}!utgpu!radio!brian 
+1 (416) 978-5558         BITNET - glendenn@utorphys.bitnet