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Re: about dns round robin

From: Daniel Stenberg <>
Date: Wed, 28 Oct 2015 10:44:34 +0100 (CET)

On Wed, 28 Oct 2015, Peng Terry Wang wrote:

> For a web server has multiple DNS name(DNS round robin),I found
> c-ares-1.10/libcurl7.39 doesn't cache the server dns in a same session, the
> round robin still works in the session, look like it always query dns server
> for the web server fqdn instead of use dns cache. The
> libcurl7.32/c-ares1.9.1 doesn't has the issue, could you please comment if
> there are the DNS query related changes around the area between the two
> c-ares/libcurl version? Thanks!

I can't recall any decision or active change that we've made on purpose to not
have the DNS cache used (in either of these projects). Sounds like a potential
bug to me.

Can you provide a receipe for how to reproduce against a public URL/name?

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Received on 2015-10-28