Re: [sixpac] SIP AOR/GRUU discovery for offline XMPP contacts.

Emil Ivov <emcho@sip-communicator.org> Thu, 17 March 2011 20:05 UTC

Return-Path: <emcho@sip-communicator.org>
X-Original-To: sixpac@core3.amsl.com
Delivered-To: sixpac@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id 3B6743A6A2E for <sixpac@core3.amsl.com>; Thu, 17 Mar 2011 13:05:46 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.599
X-Spam-Level:
X-Spam-Status: No, score=-3.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, RCVD_IN_DNSWL_LOW=-1]
Received: from mail.ietf.org ([64.170.98.32]) by localhost (core3.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uznKshthQYlP for <sixpac@core3.amsl.com>; Thu, 17 Mar 2011 13:05:45 -0700 (PDT)
Received: from mail-ww0-f44.google.com (mail-ww0-f44.google.com [74.125.82.44]) by core3.amsl.com (Postfix) with ESMTP id CBB183A69C7 for <sixpac@ietf.org>; Thu, 17 Mar 2011 13:05:44 -0700 (PDT)
Received: by wwa36 with SMTP id 36so2702322wwa.13 for <sixpac@ietf.org>; Thu, 17 Mar 2011 13:07:12 -0700 (PDT)
Received: by 10.216.46.193 with SMTP id r43mr1342389web.20.1300392431433; Thu, 17 Mar 2011 13:07:11 -0700 (PDT)
Received: from porcinet.local (shm67-5-88-165-90-188.fbx.proxad.net [88.165.90.188]) by mx.google.com with ESMTPS id t5sm1260484wes.33.2011.03.17.13.07.09 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 17 Mar 2011 13:07:09 -0700 (PDT)
Message-ID: <4D8269EC.6020209@sip-communicator.org>
Date: Thu, 17 Mar 2011 21:07:08 +0100
From: Emil Ivov <emcho@sip-communicator.org>
Organization: SIP Communicator
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; bg; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9
MIME-Version: 1.0
To: Peter Saint-Andre <stpeter@stpeter.im>
References: <4D792A10.4030506@sip-communicator.org> <F9E2FDAF48D4544F874A56A3A8BD68B1010AF1F1@008-AM1MPN1-002.mgdnok.nokia.com> <4D79E104.1030207@sip-communicator.org> <4D825BE8.3060301@stpeter.im>
In-Reply-To: <4D825BE8.3060301@stpeter.im>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Cc: sixpac@ietf.org
Subject: Re: [sixpac] SIP AOR/GRUU discovery for offline XMPP contacts.
X-BeenThere: sixpac@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: "The SIXPAC \(SIP Interworking with XMPP in Presence Aware Clients\) list is dedicated to discussion of dual-stack SIP/XMPP user agents." <sixpac.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/sixpac>, <mailto:sixpac-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/sixpac>
List-Post: <mailto:sixpac@ietf.org>
List-Help: <mailto:sixpac-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/sixpac>, <mailto:sixpac-request@ietf.org?subject=subscribe>
X-List-Received-Date: Thu, 17 Mar 2011 20:05:46 -0000

На 17.03.11 20:07, Peter Saint-Andre написа:
> On 3/11/11 1:44 AM, Emil Ivov wrote:
>> Hey Simo,
>>
>> На 11.03.11 08:43, Simo.Veikkolainen@nokia.com написа:
>>>> Would it make sense to also allow uploading and retrieving that
>>>> kind of information within a vCard? Of course, if available,
>>>> information in a presence or a message stanza should always take
>>>> precedence.
>>>
>>> This approach might be most straightforward. See
>>> http://xmpp.org/extensions/xep-0054.html which I believe will be
>>> superseded by http://xmpp.org/extensions/xep-0292.html
>>
>>
>> Right, I was also thinking about them and I guess all that we need to do
>> is indicate the elements where the AOR/GRUU would need to be stored and
>> retrieved from.
> 
> Would we use the vCard4 IMPP property for this?

Syntax-wise it looks right. Semantically RFC 4770 seems to be declaring
it as an IM or a presence address only.

So I am wondering if this could be source of confusion for non-sixpac
clients.

An example on page 2 seems to explicitly point that a SIP uri would be
used for SIMPLE chats and presence, and it is my understanding that most
sixpac clients would be unreachable this way.

Cheers,
Emil