Stephane Bortzmeyer wrote: > On Sun, Sep 23, 2007 at 10:16:26PM -0400, > Keith Moore <[EMAIL PROTECTED]> wrote > a message of 53 lines which said: > > >> I don't want getnameinfo() or any other API that does DNS lookup to >> act differently depending on whether the system seems to have >> external IPv6 connectivity or not (unless the app explicitly asked >> for this), >> > > getaddrinfo() or getnameinfo() are *not* supposed to do DNS lookups, > they are supposed to do name-to-address mapping, using whatever system > they were configured for (may be the DNS, may be LDAP, may be > /etc/hosts). > yeah, I know. and that's *broken*. because if people want apps to use DNS names, then apps need a consistent way to do DNS name lookups from one app to another. why shouldn't the standard name lookup API do this? >> because my app might have a valid reason for wanting to know if >> there's an AAAA record associated with a name even if the system >> doesn't have external IPv6 connectivity. >> > > OK, then it requires a low-level system call, doing only DNS lookups > (this API already exists, BTW). getaddrinfo() is for applications who > want the high-level view. > there's no standard API to do this. and there needs to be. >> More generally, I don't want anything that handles DNS queries - >> > > Then, getaddrinfo() is out of scope, since it was never conceived as a > DNS debugging tool who said anything about debugging? there are a number of apps that are required, as a matter of standards conformance, to do DNS queries if they want to operate correctly.
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