Re: [squid-users] Forwarding of errors

Hello David,

thank you for pointing me to the problems solution. And thank you for doing it twice as i
didn't believe it the first time!
It was the "never_direct" thing.

It seems squid is trying direct requests in addition to parent requests, if the parent
request gives an HTTP error response code.
If i explicitly block direct requests with "never_direct", squid serves the "error page" to
the client, despite the error. And the client uses it, so everything works.
Thats the solution. I didn't believe this the first time because all other ("non error")
requests worked fine - "internal"-squid only asked his parent.

Many Thanks

Matthias Weigel
ISOnova GmbH

David Beards schrieb:

> Hi Matthias,
>
> The configuration of our servers is the same as yours. The problem I
> found was that the internal cache was configured to go direct on certain
> items. This created what I believe was the same problem you are
> describing.
>
> To overcome this what I did was to set the following two options:
>
> always_direct deny all
> never_direct allow all
>
> The description of what the options do is in the configuration file,
> however I can't recall if they are available in the version you are
> running.
>
> BTW, I tried the URL you provided and I found it works fine in our
> environment. (SQUID 2.5STABLE1 on Solaris 2.6)
>
> David
>
> Matthias Weigel wrote:
> >
> > Hi,
> >
> > the problem is i have to go through the upstream ("external") proxy.
> > And of course:
> > - Why does squid drop the page with errorcode and create a new one with an error that
> > is just not there.
> > - Why does squid do this when fetching from an upstream proxy, but does it not when
> > fetchin directly?
> >
> > Best Regards
> >
> > Matthias Weigel
> > ISOnova GmbH
> >
> > David Beards schrieb:
> >
> > > You do also need to check always_direct to make sure that it is not
> > > being told to go direct for certain things.
> > >
> > > David Beards
> > > CFA
> > > Technical Manager Networks and Systems
> > > 4 Lakeside Drive
> > > Burwood East, Victoria, Australia
> > >
> > > Robert Collins wrote:
> > > >
> > > > On Thu, 2002-10-31 at 02:32, Matthias Weigel wrote:
> > > > > Hi, Robert,
> > > > >
> > > > > unfortunately allways_direct cannot be used, because the "internal" squid can
> > > > > only communicate to the "external" because of firewall restrictions.
> > > >
> > > > Heh. What was I on? I *meant* never_direct. never_direct is what you
> > > > need.
> > > >
> > > > Sorry,
> > > > Rob
> > > >
> > > > ------------------------------------------------------------------------
> > > > Name: signature.asc
> > > > signature.asc Type: application/pgp-signature
> > > > Description: This is a digitally signed message part
Received on Thu Oct 31 2002 - 09:35:10 MST