Re: [xmpp] 3921bis: probe + unavailable

Joe Hildebrand <joe.hildebrand@webex.com> Wed, 10 February 2010 20:59 UTC

Return-Path: <Joe.Hildebrand@webex.com>
X-Original-To: xmpp@core3.amsl.com
Delivered-To: xmpp@core3.amsl.com
Received: from localhost (localhost [127.0.0.1]) by core3.amsl.com (Postfix) with ESMTP id E808A3A682A for <xmpp@core3.amsl.com>; Wed, 10 Feb 2010 12:59:09 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -103.932
X-Spam-Level:
X-Spam-Status: No, score=-103.932 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, J_CHICKENPOX_24=0.6, RCVD_IN_DNSWL_MED=-4, RCVD_NUMERIC_HELO=2.067, USER_IN_WHITELIST=-100]
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 EglzRdWy+Deo for <xmpp@core3.amsl.com>; Wed, 10 Feb 2010 12:59:09 -0800 (PST)
Received: from gw1.webex.com (gw1.webex.com [64.68.122.208]) by core3.amsl.com (Postfix) with SMTP id 4EB7E3A757F for <xmpp@ietf.org>; Wed, 10 Feb 2010 12:59:09 -0800 (PST)
Received: from SRV-EXSC03.webex.local ([192.168.252.198]) by gw1.webex.com with Microsoft SMTPSVC(6.0.3790.3959); Wed, 10 Feb 2010 13:00:20 -0800
Received: from 64.101.74.200 ([64.101.74.200]) by SRV-EXSC03.webex.local ([192.168.252.200]) with Microsoft Exchange Server HTTP-DAV ; Wed, 10 Feb 2010 20:59:41 +0000
User-Agent: Microsoft-Entourage/12.20.0.090605
Date: Wed, 10 Feb 2010 13:59:41 -0700
From: Joe Hildebrand <joe.hildebrand@webex.com>
To: Peter Saint-Andre <stpeter@stpeter.im>, xmpp@ietf.org
Message-ID: <C7986C4D.1D784%joe.hildebrand@webex.com>
Thread-Topic: [xmpp] 3921bis: probe + unavailable
Thread-Index: Acqqk/a99M8j1Lhp3E2OQ4HHgXsCmA==
In-Reply-To: <4B6A1644.4000208@stpeter.im>
IM-ID: xmpp:jhildebrand@corp.jabber.com
Presence-ID: xmpp:jhildebrand@corp.jabber.com
Jabber-ID: jhildebrand@corp.jabber.com
Mime-version: 1.0
Content-type: text/plain; charset="US-ASCII"
Content-transfer-encoding: 7bit
X-OriginalArrivalTime: 10 Feb 2010 21:00:20.0586 (UTC) FILETIME=[0E55B4A0:01CAAA94]
Subject: Re: [xmpp] 3921bis: probe + unavailable
X-BeenThere: xmpp@ietf.org
X-Mailman-Version: 2.1.9
Precedence: list
List-Id: XMPP Working Group <xmpp.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/listinfo/xmpp>, <mailto:xmpp-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/xmpp>
List-Post: <mailto:xmpp@ietf.org>
List-Help: <mailto:xmpp-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/xmpp>, <mailto:xmpp-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 10 Feb 2010 20:59:10 -0000

On 2/4/10 1:35 AM, "Peter Saint-Andre" <stpeter@stpeter.im> wrote:

> On 2/1/10 6:03 PM, Justin Karneges wrote:
>> A large benefit is to prevent a jabber:iq:last storm.  We don't want there to
>> be any reason for a client to poll its entire roster.
> 
> I completely agree with that sentiment!

As do I, however without a timestamp in the unavailable presence (which in
itself is a presence leak), I see many clients still doing iq:last scans --
which are themselves a presence leak, but an unplugged one in many servers.

-- 
Joe Hildebrand