From: Claus Färber (list-ietf-wg-apps-usefor@faerber.muc.de)
Date: Fri Apr 27 2001 - 10:49:00 CDT
Henry Spencer <henry@spsystems.net> schrieb/wrote:
> On 24 Apr 2001, Florian Weimer wrote:
>> Xref is part of the NNTP protocol. Defining its semantics in the
>> USEFOR context isn't a good idea, I think.
> Uh, no, Xref was originally invented for use by reader software. It has
> turned out to have considerable utility for server and transport software
> as well. It's not just an NNTP thing, unfortunately.
Which protocols is the Xref header actually used for? NNTP (or
NNRP) and the "/var/spool/news protocol", I presume.
It might actually make sense to define it for these protocols
only (this means only for NNTP, I doubt there is a formal spec for
"/var/spool/news").
To define Xref, you actually need the concept of a "same server"
and of "message numbers", which only exist in the context of these
protocols, not in the context of the message format.
Claus
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