[SR-Users] DNS SRV when no NAPTR

Øyvind Kolbu oyvind.kolbu at usit.uio.no
Sun Sep 29 17:55:30 CEST 2013

On 2013-09-27 at 13:42, Øyvind Kolbu wrote:
> On 2013-09-27 at 11:49, Daniel-Constantin Mierla wrote:
> > Haven't got time to get back to it -- hope to happen soon.
> I've taken a small peak and think I at least found some of the problem, but
> also got quite confused.
> What is the relationship between
> dns_cache.c:dns_srv_sip_resolvehost() and
> dns_cache.c:dns_srv_sip_resolve()? They look very much copy and paste, with
> the same error in them. Both will only search for UDP records if *proto is
> not set. They also mangle the *proto value as they both set it to
> PROTO_UDP if it is unset, and the leaves it that way instead of resetting
> it to 0.
> In resolve.c:no_naptr_srv_sip_resolvehost() a proper SRV lookup function is
> defined, but not used at least for the t_relay() case. Perhaps change both
> functions in dns_cache.c to use no_naptr_srv_sip_resolvehost?

The patch attached fixes the no NAPTR and no UDP case, but only when
use_dns_failover is set to off. We usually have it on, but I can't recall

Anyhow the patch is rather trivial, just store *proto before overwriting it
and restore it before calling no_naptr_srv_sip_resolvehost.

Øyvind Kolbu
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