Mailing-List:	contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT sourceware DOT cygnus DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT sourceware DOT cygnus DOT com>
List-Archive:	<http://sourceware.cygnus.com/ml/cygwin/>
List-Post:	<mailto:cygwin AT sourceware DOT cygnus DOT com>
List-Help:	<mailto:cygwin-help AT sourceware DOT cygnus DOT com>, <http://sourceware.cygnus.com/ml/#faqs>
Sender:	cygwin-owner AT sourceware DOT cygnus DOT com
Delivered-To:	mailing list cygwin AT sourceware DOT cygnus DOT com
Message-ID:	<38235657.48928E88@sls.lcs.mit.edu>
Date:	Fri, 05 Nov 1999 16:12:39 -0600
From:	Nikko Strom <nikko AT sls DOT lcs DOT mit DOT edu>
Organization:	MIT Lab for Computer Science
X-Mailer:	Mozilla 4.6 [en] (WinNT; U)
X-Accept-Language:	en
MIME-Version:	1.0
To:	cygwin AT sourceware DOT cygnus DOT com
CC:	nikko AT sls DOT lcs DOT mit DOT edu
Subject:	B20.1: socket functions always blocking?

--------------D49EDB122BE7E9757D06BAC1
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

In the attached example, I expected recv to be non-blocking.
In fact, it seems like all socket functions always block!

Help, please...

I'm running cygwin Beta 20.1 on Win NT 4.0.

Please respond by e-mail in addition to posting on the list if possible.

Regards,
Nikko Strom

--------------D49EDB122BE7E9757D06BAC1
Content-Type: application/x-unknown-content-type-cfile;
 name="cygsockettest.c"
Content-Transfer-Encoding: base64
Content-Disposition: inline;
 filename="cygsockettest.c"
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--------------D49EDB122BE7E9757D06BAC1
Content-Type: text/plain; charset=us-ascii

--
Want to unsubscribe from this list?
Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com
--------------D49EDB122BE7E9757D06BAC1--

- Raw text -