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
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