In message <[email protected]>, Florian Weimer writes:
> * Olafur Gudmundsson:
>
> > That is the lamest justification I have seen in a long time.
> > Translation: We use crap API to lookup A records that does not give
> > us TTL values, which we want to use. Asking for ANY on the other
> > hand gives us TTL
> >
> > #1 it is not hard to write a better DNS API, if all you care about
> > is DNS addresses
>
> The final part is the problem. Name resolution has to include other
> information source besides DNS, and it's difficult to merge this data
> with your own DNS resolver (whether you wrote it yourself, or it's
> some library you got from somewhere).
getaddrinfo was designed to extended. It wouldn't be hard to add ttl
information to getaddrinfo, just add a ai_ttl to the structure at the
end and define a flag to say whether it is valid.
#ifdef AI_TTLOK
if (res->ai_flags & AI_TTLOK) {
ttl = res->ai_ttl;
ttlok = 1;
} else {
ttl = 0;
ttlok = 0;
}
#else
fallback code;
#endif
The hardest part is getting the OS developers to do it.
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Mark Andrews, ISC
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