- From: Henrik Nordström <henrik@henriknordstrom.net>
- Date: Fri, 14 May 2010 10:37:02 +0200
- To: Nicolas Alvarez <nicolas.alvarez@gmail.com>
- Cc: ietf-http-wg@w3.org
ons 2009-11-11 klockan 16:31 -0300 skrev Nicolas Alvarez:
> Quote RFC3229 section 5.5:
Would be interesting to know what scenario this refers to:
Warning to origin server implementors: it does not suffice to send
Vary: If-None-Match, A-IM
in status-226 responses. We have discovered at least one scenario
where this does not prevent a proxy cache that does not implement IM
and A-IM from incorrectly "validating" a cached 226 response.
A guess is that this is related to their idea that using Expires is not
a good method for telling HTTP/1.0 caches that this response is
incompatible with HTTP/1.0 cache rules even when HTTP/1.1 clearly states
that using Expires is the preferred method for indicating this to any
HTTP/1.0 implementations along the response path.
Any RFC3229 Delta Encoding in HTTP authors around on this list that care
to comment?
Regards
Henrik
Received on Friday, 14 May 2010 08:37:59 UTC