W3C home > Mailing lists > Public > ietf-http-wg-old@w3.org > May to August 1995

Re: Improving If-Modified-Since

From: Lou Montulli <montulli@mozilla.com>
Date: Tue, 15 Aug 95 13:11:51 -0700
Message-Id: <3030FF87.2781@mozilla.com>
To: Chuck Shotton <cshotton@biap.com>
Cc: Lou Montulli <montulli@mozilla.com>, http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
> >I have tested this change against the Netscape, NCSA, CERN and Apache
> >servers and all of them ignore the addition of size=SIZE, so we
> >can add this addition without fear of backwards compatibility concerns.
> This will break MacHTTP and WebSTAR. According to the last published
> "standard", the if-modified-since header field's argument (the date) is
> terminated with an end of line sequence. This is how it's currently parsed
> in both of those servers. Given the large installed base of these servers,
> it'd be nice to find an alternate solution.

Are you sure it will break MacHTTP and WebSTAR, or do you just assume it
will?  If it does, these servers are not following the spec.  HTTP
headers are MIME headers, and MIME headers can always be followed by
a semi-colon and additional attributes.  If they do break with the
new header then we will need to figure out how many are out there and
weather there are enough to make a significant difference in the

Lou Montulli                 http://www.mcom.com/people/montulli/
       Netscape Communications Corp.
Received on Tuesday, 15 August 1995 13:13:34 UTC

This archive was generated by hypermail 2.3.1 : Wednesday, 7 January 2015 14:40:14 UTC