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Re: HTTP 1.1 Unless header

From: Roy T. Fielding <fielding@liege.ICS.UCI.EDU>
Date: Wed, 06 Dec 1995 18:29:09 -0800
To: Alexei Kosut <akosut@nueva.pvt.k12.ca.us>
Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
Message-Id: <9512061829.aa25402@paris.ics.uci.edu>
> It seems to me that more often then not, browsers will send Unless and 
> If-Modified-Since at the same time, to maintain compatibility with HTTP 
> 1.0 servers. However, the current draft's wording on this is very oblique 
> and hard to interpret. The above is what I think it says, but I have to 
> admit I'm really not sure. Is it possible to get some clarification on 
> this point?

I think this will be cleared up in general by switching to IF instead
of Unless.  The purpose should be straightforward and should indeed
maintain compatibility with HTTP/1.0 behavior -- I probably just messed
up a few words in the wee hours before the deadline.

Received on Wednesday, 6 December 1995 18:40:26 UTC

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