Re: libpq should not look up all host addresses at once

Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr> writes:
> Patch compiles, global "make check" ok, although I'm unsure whether the
> feature is actually tested somewhere. I think not:-(

Yeah, it's hard to test this stuff without either opening up security
hazards or making unwarranted assumptions about the local network setup.
I think that the standard regression tests only use Unix-socket
communication (except on Windows) for exactly that reason, and that makes
it hard to do anything much about regression-testing this feature.

> As you noted in another message, a small doc update should be needed.

Check. Proposed doc patch attached. (Only the last hunk is actually
specific to this patch, the rest is cleanup that I noticed while looking
around for possibly-relevant text.)

> I'd consider wrapping some of the logic. I'd check the port first, then
> move the host resolution stuff into a function.

Don't really see the value of either ...

regards, tom lane