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Re: De Re If-Modified-Since

From: John Franks <john@math.nwu.edu>
Date: Thu, 17 Aug 1995 10:31:56 -0500 (CDT)
Message-Id: <199508171531.KAA07890@hopf.math.nwu.edu>
To: Brian Behlendorf <brian@organic.com>
Cc: montulli@mozilla.com, http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
According to Brian Behlendorf:
> I remember you (and/or Rob McCool) proposed just doing a straight string
> compare of the LM and IMS (LM = IMS), which is *different* than LM < IMS <
> CURRTIME.  If you implemented the latter in the Netsite, the Apache group
> will put it in Apache, I bet Chuck would put it in Webstar and Henrik would
> put it in CERN and Brandon would put it in NCSA.  Deal?  I honestly think we
> would address the most serious aspects of the incorrect-time problem without
> forcing a change to the HTTP protocol by doing this. 

I think this *is* forcing a change in the HTTP protocol.  On the other
hand I agree it is a good idea and it will go a long way toward solving
the problems discussed here.

It might be even better if the "date" of the IMS is an opaque string
so it could be "<date>;length=<number>" or "<date>;md5=<md5digest>" or
whatever.  The only limitation is that it can't be recreated by the
client, but I think that is unrealistic anyway.

John Franks
Received on Thursday, 17 August 1995 08:37:23 UTC

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