Re: [Uri-review] [xmpp] XMPP jabber: URI scheme not registered?

Bjoern Hoehrmann <derhoermi@gmx.net> Thu, 29 November 2012 04:37 UTC

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From: Bjoern Hoehrmann <derhoermi@gmx.net>
To: Peter Saint-Andre <stpeter@stpeter.im>
Date: Thu, 29 Nov 2012 05:37:33 +0100
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Cc: "uri-review@ietf.org" <uri-review@ietf.org>, Graham Klyne <GK@ninebynine.org>, "xmpp@ietf.org" <xmpp@ietf.org>
Subject: Re: [Uri-review] [xmpp] XMPP jabber: URI scheme not registered?
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* Peter Saint-Andre wrote:
>On 11/28/12 8:28 PM, Bjoern Hoehrmann wrote:
>> * Peter Saint-Andre wrote:
>>>   URI scheme syntax.
>>>      The only allowable strings are:
>>>      - jabber:client
>>> [...]
>> 
>> I would prefer if this used some wording that avoids speculation whether
>> "JABBER:client" or "jabber:%63lient" are actually prohibited by this and
>> whether it is okay for individual schemes to specify such constraints.
>> Simply saying, for example, these strings are used as XML namespace
>> names and the scheme should not be used for other purposes would do.
>
>I thought that was clear from the section on semantics:

The problem are the conformance requirements implied by "allowable". If
you develop a URI Validator and add support for the 'jabber' scheme, it
is not clear whether strings like "JABBER:client" or "jabber:%63lient", 
or even "jabber:client#" should be rejected. These strings are not on
the list of "allowable" strings, so some will argue they ought to be re-
jected, while others will argue per RFC 3986 they ought to be accepted.
-- 
Björn Höhrmann · mailto:bjoern@hoehrmann.de · http://bjoern.hoehrmann.de
Am Badedeich 7 · Telefon: +49(0)160/4415681 · http://www.bjoernsworld.de
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