Re: [Gaim-devel] Resolving IP addresses in Gaim

[Mark D. <ma...@ki...>]

On Mon, 21 Aug 2006 00:35:11 -0500, Gary Kramlich wrote
> Mark Doliner wrote:
> 
> <snip>
> 
> >> Why do we need a thread?  Can't we use a watcher or listener in our main
> >> loop?
> > 
> > We use either getaddrinfo() or gethostbyname(), and they are both blocking.
> > 
> > -Mark
> 
> I haven't looked at the changes, but I hope, now that it's threaded that
> we're using gethostbyname_r or gethostbyname2_r, since the man page says:
> 
>       The  functions  gethostbyname()  and gethostbyaddr() may return
> pointers to static data, which
>        may be overwritten by later calls. Copying the struct hostent
> does not suffice, since it  con‐
>        tains pointers; a deep copy is required.
> 
> This of course, is implementation specific.

I'm working on that right now, actually.  Unfortunately gethostbyname_r() is a
GNU extension, which means we shouldn't use it.  Which means that we'll have
to use gethostbyname() in a blocking manner on systems without addrinfo. 
Fortunately this should be a relatively small number of systems.

-Mark