Re: Date in If-modified-since header

• From: Roy T. Fielding <fielding@liege.ICS.UCI.EDU>
• Date: Tue, 15 Oct 1996 16:01:07 -0700
• To: http-wg mailing list <http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com>
• Message-Id: <9610151601.aa26918@paris.ics.uci.edu>

> However, as an "advice to implementors" kind of thing, I would
> suggest that an HTTP client ought to act as if the If-Modified-Since
> headers that it sends *for cache validation* are going to be
> interpreted as "If-Modification-date-does-not-match-exactly".
> In other words, an HTTP client ought to be careful to preserve
> all of the accuracy in the Last-Modified date, rather than (perhaps)
> playing games based on the official semantics of If-Modified-Since.

Yep.

......Roy

Received on Tuesday, 15 October 1996 16:07:43 UTC