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Date:	Sun, 14 Jun 2009 12:00:51 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: [BUG 1.7 getopt_long() and recv()] has problem for tftp-hpa-5.0 on cygwin-1.7/win2003
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On Jun 14 02:00, Christopher Faylor wrote:
> On Sat, Jun 13, 2009 at 07:53:10PM -0700, Xiaoqiang Zheng wrote:
> >to make the 2 BUGs more clear:
> >[...]
> >* recv() returns -1 with error 14 when it read acknolege packet from the socket, the normal return value is 4.
> 
> Chuck's analysis of 1. seems spot on.
> 
> Corinna should have fixed 2.  earlier today.  Her fix should be in the
> latest snapshot at http://cygwin.com/snapshots/

Just FYI, I found that the Winsock function WSARecvFrom has a weird
property.  If the parameter in which the socket name is returned is a
NULL pointer, the namelen pointer must be a NULL pointer as well,
otherwise WSARecvFrom returns a WSAEFAULT error, even if the namelen
pointer points to a valid, writable memory area.  The name and namelen
parameter are ignored entirely with TCP sockets, so WSAEFAULT is only
returned for UDP sockets.  This might explain that we didn't have a bug
report for this so far.

Thanks for the testcase, even though an entire application is quite
bulky as a testcase.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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