Mail Archives: cygwin/2009/08/06/09:08:26
On Aug 6 20:48, Zhiming Zhou wrote:
> This bug happens on every 1.7.0 beta version.
> I use getnameinfo function with NI_NUMERICHOST flag,
>
> if the "sin_port" of sockaddr is a known port(like 21, 80...)
> in "/etc/services" file, getnameinfo function works ok, and
> service name is correctly fetched(ftp, http...).
>
> however if I fill "sin_port" with an unknown port(like 6400, 6499)
> getnameinfo returns EAI_NODATA, and if i add a 6400 or 6499 service
> entry in "/etc/services" file, getnameinfo works ok again.
>
> So, I move the code to Linux, it works ok either "sin_port" is known
> or unknown, if port is known(like 21), service name is fetched(ftp),
> if not(6400), service name is filled with port number(6400), and it
> works very good :)
>
> Any helps?
On what OS are you running? If that's Windows XP or 2003, then that's
a known shortcoming of the OS which is fixed in Windows Vista and later.
The workaround is to specify NI_NUMERICSERV.
I'll take a stab at fixing this in Cygwin for XP/2003 so that it behaves
as on Vista.
Corinna
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Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
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