Re: Microsoft Server, squid, Microsoft Client

From: Michael Pelletier <>
Date: Tue, 14 Jul 1998 16:29:59 -0400 (EDT)

On Tue, 14 Jul 1998, Marc Haber wrote:

> (1) There seems to be a problem with IE4.01 and squid. When I try
> to access some pages (especially the Microsoft Knowledge Base), IE4
> complains about security settings being incorrect. Disabling http
> 1.1 usually solves the problem most of the time, but I have been
> getting that message even with http 1.1 disabled. When I disable the
> proxy, I get through fine.

Yep. Ran into this with our internal FTP server. What's even
stranger is that the client doesn't send out a single solitary packet
before informing the user that the site is not usable. Upgrading to
4.01 SP1 (4.72.3110.8) solved the problem.

> (2) Microsoft has started to use these funky "Active Server Pages".
> Obviously, squid doesn't cache the page and retrieves it again every
> time. In the case of the Knowledge Base Query page, this is 40 KB
> each that can take quite some time on a saturated transatlantic
> link. Can I tweak squid into caching Active Server Pages?

Just adjust your squid.conf stoplists appropriately. Not sure that
it's a good idea, though. The ASPs are dynamic pages, and if you
cache them you can wind up with incorrect display on the client's

> (3) I have found that squid releases pages from the cache. I don't
> want this to happen since I still have a couple of GB free on my
> cache partition. Why doesn't it keep the pages and issues an
> if-modified-since when a new request comes in weeks later? This
> surely can't be a disk memory issue.

What makes you say that pages are being released from the cache?
Which log entries are you seeing? From what I can tell, Squid should
essentially fill up the cache until the high-water mark is reached
with pages that have not been modified, and check if-modified-since if
they are either older than the "max" field in refresh_pattern or have
expired in accordance with the "Expires:" header.

        -Mike Pelletier.
Received on Tue Jul 14 1998 - 13:31:03 MDT

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