Re: SRV resolver API?

[Paul Vixie <paul@vix.com>]

> It seems like the uptake on SRV has been very slow.  As an application
> developer, on more than one occassion now, I've wanted to use SRV and
> been stymied by the unavailability of resolver implementations.  To my
> knowledge, there are only 2 opensource implementations: RULI and adns
> which are both GPLed. In any case, there isn't one in libc/libresolv
> on any Unix platform that I know of.  The DnsQuery() API in Windows
> appears to handle SRV as of Win2K/XP.

bind8/contrib/srv/ contains arnt gulbrandsen's work in this area, which
while inadequate as the basis for a POSIX API, is adequate for application
work.  it's been in bind8/contrib/ since 1998.

> I'd like to suggest that part of the problem -- at least on the Unix
> side -- is that there isn't a standardized resolver API for SRV.  The
> IPv6 effort came up with getaddrinfo() and friends in rfc2553; its
> gone into POSIX as well.  Why haven't we standardized a resolver API
> for SRV?

more broadly than that, a full dns client-side api is needed.  we drafted
one a couple of years ago but couldn't find the funding for it.  c and c++
programmers should have the same high level access to the dns protocol that
perl programmers have (through the excellent Net::DNS module).

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