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Subject: Re: IPv6 servers redux

Re: IPv6 servers redux

From: Gregor Jasny <>
Date: Tue, 3 Feb 2009 18:45:44 +0100


I've found some time to look at the IPv6 servers patch.

On Wed, Jan 14, 2009 at 02:23:01PM +0100, Daniel Stenberg wrote:
> On Thu, 18 Dec 2008, Gregor Jasny wrote:
> It struck me that the API for ares_get_servers() is not really solid. How
> would a user free the list of servers again? We can't assume that free() is
> fine on memory returned from c-ares.
> Would it perhaps make sense to fill in a given buffer instead of doing a
> malloc, and then do a 'too small buffer' return code if the buffer isn't
> large
> enough to hold the full list? The other solution is of course to make a more
> generic ares_free() function that would free the given resource. It could
> then
> be made somewhat genericly so that it can be used for future returned data
> as well...

I've created ares_free(), a simple wrapper around free(). I think that
will do it for now.

I've tested DNS lookup as usual via adig with IPv4 and IPv6.


Received on 2009-02-03