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HTTP version number

From: Roy T. Fielding <fielding@avron.ICS.UCI.EDU>
Date: Fri, 01 Mar 1996 15:32:35 -0800
To: Koen Holtman <koen@win.tue.nl>
Cc: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
Message-Id: <9603011532.aa28440@paris.ics.uci.edu>
Koen writes:
> draft-kristol-http-state-mgmt-00 is not orthogonal to the HTTP version
> number: see section 10.  Servers need the version number to know
> whether they should send an old Netscape format Set-Cookie header or a
> new HTTP/1.1 Set-Cookie header.

This won't work.  For example

     1.0 UA ---------> 1.1 Proxy ---------> 1.0 Origin Server

will result in a 1.1 cookie being sent to a 1.0 user agent.

The only features of HTTP that can depend on a minor version number
change are those that are interpreted by neighbors in the communication.
Other feature changes require changes to the content, such as a 
different header field name.


 ...Roy T. Fielding
    Department of Information & Computer Science    (fielding@ics.uci.edu)
    University of California, Irvine, CA 92717-3425    fax:+1(714)824-4056
    http://www.ics.uci.edu/~fielding/
Received on Friday, 1 March 1996 16:01:43 EST

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