Re: [squid-users] Squid returns old Expires: header

Thanks for your assistance. I'm using 2.6.STABLE4, btw. I've been
aware reload-into-ims violates HTTP (and love using it nonetheless),
but I hadn't anticipated this behavior to be a side effect
of reload-into-ims.

I will follow your advice. however...

> - upgrade to the latest squid release to get the latest fix for this
> - bypass the reload-to-ims for these images
> - purge the current items from your cache.

if your first suggestion is a fix, why do I need to do the other two?
(Is there some way I can continue to use reload-into-ims? I suppose I
could always go the route of having Apache strip off no-cache
headers.)

Thanks again,
Ed

On Tue, Mar 25, 2008 at 5:28 PM, Amos Jeffries <squid3@treenet.co.nz> wrote:
>
> Ed Eddington wrote:
> > I'm having a problem where Squid is returning the cached Expires:
> > header with a cached image. (These images are specified in CSS, so
> > mouse roll-over is causing lots of re-requests for the images by the
> > browser!) I have reload-into-ims turned on, so a browser reload turns
> > into an If-Modified-Since request, which works as expected. The IMS
> > response indicates 304 Not Modified and includes a new Expires: header
> > in the future (and also includes a Last-Modified: header). However,
> > Squid never updates the cached image with the newer Expires: date/time
> > and always returns the one from the cached object (which is now months
> > old). Any suggestions how I can get Squid to update the cached copy
> > and return the newer Expires: date/time? Here's my refresh pattern:
> >
> > refresh_pattern . 60 0% 60 reload-into-ims
> >
>
> Well, you fail to mention your version of squid. But this is an old
> problem with workarounds.
>
> If you encounter problems with proxies configured to violate HTTP.
> Expect to be told to unconfigure the violation.
>
> So:
> - upgrade to the latest squid release to get the latest fix for this
> - bypass the reload-to-ims for these images
> - purge the current items from your cache.
>
> Amos
> --
> Please use Squid 2.6STABLE17+ or 3.0STABLE1+
> There are serious security advisories out on all earlier releases.
>
>
Received on Tue Mar 25 2008 - 18:11:25 MDT