- From: Daniel DuBois <dan@spyglass.com>
- Date: Thu, 28 Nov 1996 13:10:29 -0800
- To: Larry Masinter <masinter@parc.xerox.com>
- Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
>Thus, I'd like to ask that if ANYONE ELSE in the WHOLE WORKING GROUP
>agrees with Roy that the proposal for calculation of Age in the
>HTTP/1.1 specification is incorrect, would you please at least send me
>(if not the whole group) a message indicating that you think this is
>something that should be addressed.
FWIW, I think the age calculation is conservative to a fault and would
prefer to see it change, but I don't share Roy's passion.
I consider the issue of whether or not to add an Age: header (with any
value) to a response that was NOT served from cache to be a different issue
entirely, and feel more strongly that a proxy should not add an Age: to a
fresh response.
If a client makes a must-revalidate request to a proxy and sees the Age:
header (worse - one miscaluclated with a time larger than the initial
resposne time minus request time) how can it distinguish between whether 1)
it got a fresh response, or 2) that the proxy ignored it's wishes and gave
it a stale copy from a few seconds prior?
Now that I reference the spec again, I'm confused in the ascertation made on
this list that all proxies must add an Age: header.
In 14.6: "HTTP/1.1 caches MUST send an Age header in every response."
That's caches -- not proxies.... ?
-----
Daniel DuBois, Traveling Coderman www.spyglass.com/~ddubois
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Received on Thursday, 28 November 1996 13:15:50 UTC