Re: Win IE 5 Problems (Really Urgent)

WebTen 3.0.3 / MacOS 9.0.4 / Single Stack

I am having some unusual behaviour with Windows IE 5.5 and WebTen.  Like so
many sites, this one has a navigation bar with rollover images.  On Win
IE5.5 when you rollover the navbar IE does a download of the image even
though the images have been pre-loaded via javascript.  No matter how many
times you rollover the image each time you do a rollover (or rollout) IE
does a download.

This behaviour does not happen with images coming from any of my other
servers which all run Apache.

Ahh, but do those servers have Squid caching also?

 In fact the same page with images loaded from
any other server does not cause IE 5.5 to re-load the images.

I have verified in the log files that both WebTen and my Unix Apache servers
return the same code, 304 (unmodified) so it does not appear to be a problem
of return codes.

This problem does not happen with Mac versions of IE; the Mac version
behaves normally and does not re-load the images but I imagine this has to
do with differences in the codebase.

The problem seems to be somehow tied to the fact that WebTen returns
requests on port 81 even though the request came in on port 80.  Why I don't
know but it seems to cause problems with Windows IE 5.5.

Can someone at WebTen tell me why we are returning on port 81

When you run Squid, it listens on port 80. Any request that it can't fulfill, such as when the file isn't cached or it's dynamic content, ends up being passed to Apache which is on port 81.

and/or why
Windows version of IE wants to re-load images already in cache when served
from a WebTen server?

IE seems to have lots of strange behavior with regard to caching.

Does anyone have a fix for this problem?

Turning off Squid caching. Depending on your site, this might have a significant adverse effect on performance, or not. If a large portion of what you serve is dynamically generated, it probably won't cause much degradation in performance. -- Stephanie J. Wright

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