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From "Joshua Slive" <jos...@slive.ca>
Subject Re: [users@httpd] Retry: HostnameLookups timeout?
Date Thu, 23 Mar 2006 15:05:14 GMT
The obvious answer to this problem is to turn off HostnameLookups and
use something like the logresolve program included in apache to
resolve hostnames in your logs.

On 3/23/06, Markus Mayer <mymaillists@gmx.at> wrote:
>
> I looked in the code and the manuals for the system calls.  It seems I have no
> control over this from apache.  I will have to look in the system itself, but
> I doubt I can change anything there.  If I find something I will report back
> to the list because it is certainly useful for other people.
>
> Thanks
> Markus
>
>
> On Wednesday 22 March 2006 16:58, Boyle Owen wrote:
> > > -----Original Message-----
> > > From: Markus Mayer [mailto:mymaillists@gmx.at]
> > > Sent: Mittwoch, 22. März 2006 16:15
> > > To: users@httpd.apache.org
> > > Subject: [users@httpd] Retry: HostnameLookups timeout?
> > >
> > >
> > > Generally reverse lookups work well, but for some IP
> > > addresses the reverse
> > > lookup times out.
> > >
> > > To get around this problem, I wanted to configure how long
> > > apache waits for a
> > > response, however I have not been able to find such an
> > > option.
> >
> > I suspect that this is not apache's problem... In the OSI model, Apache
> > works on the application layer so any requests for services from other
> > machines are passed down to the TCP/IP layer for routing. It is there that
> > the DNS lookup takes place.
> >
> > From apache's POV, all it does is ask the TCP/IP layer to get the hostname
> > for a particular IP - apache doesn't care about the implementation...
> >
> > > I also looked
> > > in the source code, but was not able to find where this
> > > timeout is set.
> >
> > look in server/core.c; apache uses apr_getnameinfo() which in turn uses the
> > system function getnameinfo() (do "man getaddrinfo" for details)
> >
> > Rgds,
> > Owen Boyle
> > Disclaimer: Any disclaimer attached to this message may be ignored.
> >
> > > Either solution is fine for me, however of course a
> > > configuration directive
> > > to set timeouts for HostnameLookups would be much more
> > > preferable.  Does any
> > > one know what directive there is to set, of if there is even
> > > one?  And if
> > > there's no directive, where in the source code do I look to set this?
> > >
> > > All help on this will be greatly appreciated.
> > >
> > > greetings from Austria.
> > > Markus
> > >
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