getaddrinfo fails with EAI_NODATA for some valid hosts with A records

[Corinna Vinschen]

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 records. 
> >> Err 7 EAI_NODATA is mapped from WSANO_DATA err 11004 in Windows.
> >> Can anyone reproduce failure with problem host name below? 
> > 
> > Yes, I can reproduce it, and it's a total surprise.
> 
> > I have no idea why Windows' getaddrinfo chokes on leapsecond.utcd.org
> > at all.
> 
> Especially when after just one getaddrinfo call, the DNS cache is populated
> 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
> 
> so the DNS server is being contacted and responding normally, but it would
> appear Windows GAI is failing to use that info. 
> Has this been reproduced on W10 so we can report this upstream? 

I can reproduce this on W10 as well.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://cygwin.com/pipermail/cygwin/attachments/20160113/ba70e6ed/attachment.sig>