Fwd: [squid-users] Ignore "If-Modified-Since"

Sorry - meant to include the list on this...

Kurt

---------- Forwarded message ----------
From: Kurt Buff <kurt.buff@gmail.com>
Date: Fri, Mar 28, 2008 at 5:18 PM
Subject: Re: [squid-users] Ignore "If-Modified-Since"
To: Henrik Nordstrom <henrik@henriknordstrom.net>

On Fri, Mar 28, 2008 at 12:08 PM, Henrik Nordstrom
 <henrik@henriknordstrom.net> wrote:
> On Fri, 2008-03-28 at 10:16 -0700, Kurt Buff wrote:
> > I know one good reason why - my firewall blocks the request, based on
> > that header.
>
> That would be a pretty odd firewall, blocking one of the more common
> HTTP requests send by clients..

 It's a Sidewinder, by Secure Computing. The denial has so far been
 noted in conjunction with loading PDFs in a web page, though there may
 have been some other instances. The header seems to be generated
 randomly - I haven't figured out a pattern for it yet, but if you stop
 requesting the URL for some undetermined period of time, the browser
 doesn't issue that header again for that URL, and the page/document
 then loads. It's very strange.

 The firewall is relatively new to us, but I actually like it a lot. I
 have not talked with their tech support about this issue, though I
 might later if I have some time.

>
> > My users get a message that the page is denied by
> > security policy. If I could get squid to ignore the header, or rather
> > filter it out, I'd be much happier.
>
> That's easy:
> request_header_access If-Modified-Since deny all
>
> But it's not so easy to get Squid to ignore received If-Modified-Since
> headers..

 I'll take a look at this. Thanks!

 Kurt
Received on Fri Mar 28 2008 - 18:18:52 MDT