- From: Jeffrey Mogul <mogul@pa.dec.com>
- Date: Mon, 04 Mar 96 17:33:39 PST
- To: Henrik Frystyk Nielsen <frystyk@w3.org>
- Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
Henrik Frystyk Nielsen writes:
John Franks writes:
> What about the date header being part of the data digested for the
> message-digest. Is it unsafe to assume that proxies will not mangle
> the origin-server Date: header?
Caching proxies will do so.
Huh? Do you mean mean "existing caches do so" or "the HTTP/1.1 spec
allows them to do so?" The latter is probably false (although not
explicitly so).
Our discussions (in the caching subgroup) have assumed that Date:
is set when the response is generated by the origin server, and
we have used this assumption to define the meaning of Expires:.
If proxies rewrite Date: response headers, we are in some trouble.
-Jeff
P.S.: We're OK if the rewriting results in semantically equivalent
dates (i.e., only a format change), but not if the "mangling" is
more general.
Received on Monday, 4 March 1996 17:52:38 UTC