On fre, 2007-08-24 at 02:15 -0700, ToddWilliams wrote: > A subsequent request seems to come from IE6's local cache -- it ignored the > directives. Odd. > Is IE6 ignoring the Cache-Control line because it sees the HTTP/1.0 ? > I guess it is ignoring Pragma, because it's not HTTPS, but what about my > Expires: -1 line? "Expires: -1" is not valid, but specs (even HTTP/1.0) says clients should regard that as uncacheable.. Regarding "Pragma: no-cache". It's only defined as a request header, not a response header. Use of http/https should not matter as both is http. > Microsoft KB article 234067 says "HTTP 1.0 servers cannot use the > Cache-Control header." and "Cache-Control headers are invalid in HTTP 1.0 > responses", and talks about Pragma: no-cache, but warns "Pragma: no-cache > prevents caching only when used over a secure connection" The first part is bullshit. HTTP/1.0 servers is free to use any features from HTTP/1.1 they like, except for transfer encoding. Also clients SHOULD ignore the HTTP version when parsing responses, with only a few explicit exceptions related to the Connection header. Regards Henrik
Attachment:
signature.asc
Description: This is a digitally signed message part
