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Date: Wed, 13 Jan 2016 12:02:43 +0100
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: getaddrinfo fails with EAI_NODATA for some valid hosts with A records
Message-ID: <20160113110243.GB16198@calimero.vinschen.de>
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References: <loom.20160107T163448-78@post.gmane.org> <20160108111408.GH20447@calimero.vinschen.de> <loom.20160113T042110-649@post.gmane.org>
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On Jan 13 08:14, Brian Inglis wrote:
> Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:
> > On Jan  7 15:39, Brian Inglis wrote:
> >> getaddrinfo fails with err 7 EAI_NODATA for some valid hosts with A re=
cords.=20
> >> Err 7 EAI_NODATA is mapped from WSANO_DATA err 11004 in Windows.
> >> Can anyone reproduce failure with problem host name below?=20
> >=20
> > Yes, I can reproduce it, and it's a total surprise.
>=20
> > I have no idea why Windows' getaddrinfo chokes on leapsecond.utcd.org
> > at all.
>=20
> Especially when after just one getaddrinfo call, the DNS cache is populat=
ed
> with:
>     leapsecond.utcd.org
>     ----------------------------------------
>     Record Name . . . . . : leapsecond.utcd.org
>     Record Type . . . . . : 1
>     Time To Live  . . . . : 600
>     Data Length . . . . . : 4
>     Section . . . . . . . : Answer
>     A (Host) Record . . . : 244.34.36.97
>=20
> so the DNS server is being contacted and responding normally, but it would
> appear Windows GAI is failing to use that info.=20
> Has this been reproduced on W10 so we can report this upstream?=20

I can reproduce this on W10 as well.


Corinna

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

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