conditionalhttp problems with IE 6

Thursday June 23, 2005, Will Kahn-Greene | share this (mastodon)

Note: This is an old post in a blog with a lot of posts over a long span of time. The world has changed, technologies have changed, and I've changed. It's likely this is out of date, the code doesn't work, the ideas haven't aged well, or the ideas were terrible to begin with. Let me know if you think this is something that needs updating.

Joseph pointed out a problem where IE 6 won't display a cached page when it gets a 304 from the conditionalhttp plugin. (The issue is at the bottom of the email.)

I did some poking around and discovered on Wednesday that this happens on his blog as well as on my blog with IE 6 on Windows XP. On Thursday, I was no longer able to reproduce the problem on my site, but Joseph's was still broken. I don't know off hand what changed with my site, though I did do an apt-get update Wednesday night.

Anyhow, the 304 response from my site (which seems to work fine now) is (note the server line is wrapped):

HTTP/1.1 304 Not Modified
Date: Thu, 23 Jun 2005 14:32:26 GMT
Server: Apache/1.3.33 (Debian GNU/Linux) mod_python/2.7.10 Python/2.3.4 PHP/4.3.10-15 mod_ssl/2.8.22 OpenSSL/0.9.7d DAV/1.0.3
ETag: "1119536230.43"
Last-Modified: Thu, 23 Jun 2005 14:17:10 GMT
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=iso-8859-1

And from Joseph's site (which is still not working):

HTTP/1.1 304 Not Modified
Date: Thu, 23 Jun 2005 14:37:15 GMT
Server: Apache/2.0.46 (Red Hat)
Connection: Keep-Alive
Keep-Alive: timeout=5, max=100
ETag: "1118428239.0"
Vary: Accept-Encoding,User-Agent

=bunch of funky non-printable characters here=

Looking at responses from other requests to Joseph's server leads me to believe that pages are gzipped. I'm not sure if that's part of the issue or not.

My site: /~willkg/blog/

Joseph's site: http://reagle.org/joseph/blog/

I'm running PyBlosxom 1.2.1 with the contributed plugins pack 1.2.2 with conditionalhttp. I think Joseph is as well. I have no idea if this is affecting anyone else--no one else has complained on the mailing lists or anywhere else that I've checked.

Anyone have any ideas as to what might be happening?

Want to comment? Send an email to willkg at bluesock dot org. Include the url for the blog entry in your comment so I have some context as to what you're talking about.