X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; q=dns; s=
	default; b=AN5usYo0TyjiYPVFOA1kAjflK8ooiHJpHBG5IfJ43K9hD6TyFkGig
	tgyQqCT0cTs6QjimizyM4KrQvB7dlRJPzYo4ZlnWuPyBcopPAhwuJ1znbdHbZYg2
	cPhL0SV1UsoWNLiNzwxJJPZW/TsfBL+O+e3BWcnlh0RrXfvAEz4O5A=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:reply-to
	:references:mime-version:content-type:in-reply-to; s=default;
	bh=FUh7B01OZd2hcPydmc3yj+lWkTg=; b=HX13wT1VKvaJRAgQwHnDMM5wdBXM
	JrNZaA0YJ79KRE5snAQ1KWZxoDAcY5QBxIIM13L9NHaTRjN3JfD1VDkopY6mxwIJ
	T3FAaHFXzHaGQpo8JkvXcsTea3h2wExD4IGEnRkXEtq3R42RrHFPQ72s4qm2yuo6
	b5szKSLxj16E1qk=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=-101.9 required=5.0 tests=AWL,BAYES_50,KAM_LAZY_DOMAIN_SECURITY,KHOP_DYNAMIC,RCVD_IN_PBL,RDNS_DYNAMIC,USER_IN_WHITELIST autolearn=no version=3.3.2 spammy=Maintainer, DOT, 0x80000, inglis
X-HELO:	calimero.vinschen.de
Date:	Fri, 8 Jan 2016 12:14:08 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: getaddrinfo fails with EAI_NODATA for some valid hosts with A records
Message-ID:	<20160108111408.GH20447@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<loom DOT 20160107T163448-78 AT post DOT gmane DOT org>
MIME-Version:	1.0
In-Reply-To:	<loom.20160107T163448-78@post.gmane.org>
User-Agent:	Mutt/1.5.24 (2015-08-30)

--CNfT9TXqV7nd4cfk
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Hi Brian,

On Jan  7 15:39, Brian Inglis wrote:
> getaddrinfo fails with err 7 EAI_NODATA for some valid hosts with A recor=
ds.=20
> Err 7 EAI_NODATA is mapped from WSANO_DATA err 11004 in Windows.
> Can anyone reproduce failure with problem host name below?=20

Yes, I can reproduce it, and it's a total surprise.

In fact, this is *not* a Cygwin problem.  I created an STC, a simple
mingw application, very certainly not using Cygwin at all:

$ cat gai.c
#define _WIN32_WINNT 0x0a00
#include <ws2tcpip.h>
#include <windows.h>
#include <stdio.h>

#ifndef AI_DISABLE_IDN_ENCODING
#define AI_DISABLE_IDN_ENCODING 0x80000
#endif

int
main (int argc, char **argv)
{
  WSADATA wsadata;
  struct addrinfo hint, *res;
  int ret;

  WSAStartup (MAKEWORD(2,2), &wsadata);

  memset (&hint, 0, sizeof hint);
  hint.ai_flags =3D 0;//AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME | AI_DIS=
ABLE_IDN_ENCODING;
  hint.ai_family =3D 0;//AF_INET;
  ret =3D getaddrinfo (argv[1], NULL, &hint, &res);
  printf ("ret =3D %d\n", ret);
}
$ x86_64-w64-mingw32-gcc -g -o gai gai.c -lws2_32
$ ./gai cygwin.org
ret =3D 0
$ ./gai www.sun.de
ret =3D 0
$ ./gai leapsecond.utcd.org
ret =3D 11004

I have no idea why Windows' getaddrinfo chokes on leapsecond.utcd.org
at all.


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

--CNfT9TXqV7nd4cfk
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=2GRZ
-----END PGP SIGNATURE-----

--CNfT9TXqV7nd4cfk--

- Raw text -