IETF Logo Mail Archive

Re: [Stox] Media Sessions (draft-ietf-stox-media-01) and forking

Christer Holmberg <christer.holmberg@ericsson.com> Sun, 04 August 2013 16:55 UTC

Return-Path: <christer.holmberg@ericsson.com>
X-Original-To: stox@ietfa.amsl.com
Delivered-To: stox@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 33AA021F9BEB for <stox@ietfa.amsl.com>; Sun, 4 Aug 2013 09:55:24 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.42
X-Spam-Level:
X-Spam-Status: No, score=-5.42 tagged_above=-999 required=5 tests=[AWL=-0.042, BAYES_00=-2.599, HELO_EQ_SE=0.35, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-4, SARE_MLH_Stock1=0.87]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id M-ZtgM+xgLWX for <stox@ietfa.amsl.com>; Sun, 4 Aug 2013 09:55:19 -0700 (PDT)
Received: from mailgw7.ericsson.se (mailgw7.ericsson.se [193.180.251.48]) by ietfa.amsl.com (Postfix) with ESMTP id 5B34221F9BD1 for <stox@ietf.org>; Sun, 4 Aug 2013 09:55:17 -0700 (PDT)
X-AuditID: c1b4fb30-b7ef76d000004bbc-e2-51fe877470e7
Received: from ESESSHC024.ericsson.se (Unknown_Domain [153.88.253.125]) by mailgw7.ericsson.se (Symantec Mail Security) with SMTP id DA.C6.19388.4778EF15; Sun, 4 Aug 2013 18:55:16 +0200 (CEST)
Received: from ESESSMB209.ericsson.se ([169.254.9.135]) by ESESSHC024.ericsson.se ([153.88.183.90]) with mapi id 14.02.0328.009; Sun, 4 Aug 2013 18:55:16 +0200
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Adrian Georgescu <ag@ag-projects.com>
Thread-Topic: [Stox] Media Sessions (draft-ietf-stox-media-01) and forking
Thread-Index: Ac6PaRwphn/mcGjdScuZ2ITH5v377///4akA///dspCAACTvAP/8UCBA
Date: Sun, 04 Aug 2013 16:55:15 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B1C41C17E@ESESSMB209.ericsson.se>
References: <7594FB04B1934943A5C02806D1A2204B1C418E51@ESESSMB209.ericsson.se> <8C703C0F-181C-4E36-8A59-727B45C0A1B5@ag-projects.com> <7594FB04B1934943A5C02806D1A2204B1C418FAC@ESESSMB209.ericsson.se> <B7CBEFB1-2A23-4337-90DD-D8157123A1AD@ag-projects.com>
In-Reply-To: <B7CBEFB1-2A23-4337-90DD-D8157123A1AD@ag-projects.com>
Accept-Language: en-US
Content-Language: fi-FI
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [153.88.183.146]
Content-Type: multipart/alternative; boundary="_000_7594FB04B1934943A5C02806D1A2204B1C41C17EESESSMB209erics_"
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrELMWRmVeSWpSXmKPExsUyM+JvrW5J+79Ag4b5xhZb7+Vb/N/RxOrA 5NHSP4nFY8mSn0wBTFFcNimpOZllqUX6dglcGQv2XWYvuF9Ycej+a8YGxu0pXYwcHBICJhKn FgV3MXICmWISF+6tZ+ti5OIQEjjMKPHhZCMLhLOYUeL1sk1MIA1sAhYS3f+0QRpEBDQlWhZN ZgEJMwsoSxyaIgsSFhbwlNi86wM7RImXxLZbD6FsN4n9K1Yzg9gsAioSu+/uZAOxeQV8Jfrn vGGFWNXMJPFq91QWkASngLPE2uWvmUBsRqDjvp9aA2YzC4hLfDh4nRniaAGJJXvOQ9miEi8f /2OFsJUkfmy4xAJRny+x/tlMdohlghInZz5hmcAoOgvJqFlIymYhKYOI60ncmDqFDcLWlli2 8DVUva7EjH+HWJDFFzCyr2Jkz03MzEkvN9/ECIyng1t+G+xg3HRf7BCjNAeLkjjvZr0zgUIC 6YklqdmpqQWpRfFFpTmpxYcYmTg4pRoYJ4bNn1Dy/OyzBfufhq69Fh+UpXHmf8ynhUefakzI +Hwm95pbXtHJKzPD41XtImu0nOSPiZQdPP3+w4xVd9zzdC3FGdIlenXXJic/PJ9ncf1x5L39 D15Hmjz5/3prbLy9an3cc86dn/zrW36dfPHxX4vje6fC9tdb+hUnrpJ+7CzwujHzJ3P3UiWW 4oxEQy3mouJEACZPBKZ1AgAA
Cc: "stox@ietf.org" <stox@ietf.org>
Subject: Re: [Stox] Media Sessions (draft-ietf-stox-media-01) and forking
X-BeenThere: stox@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: SIP-TO-XMPP Working Group discussion list <stox.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/stox>, <mailto:stox-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/stox>
List-Post: <mailto:stox@ietf.org>
List-Help: <mailto:stox-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/stox>, <mailto:stox-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sun, 04 Aug 2013 16:55:24 -0000

Hi,

There for sure may be a SIP server (a proxy, B2BUA and/or the remote UAS) in the network, but how can you guarantee that it will handle forking? A forking proxy will simply forward 18x responses forming the early dialogs towards the gateway, which then will have to handle them.

Regards,

Christer

Lähettäjä: Adrian Georgescu [mailto:ag@ag-projects.com]
Lähetetty: 2. elokuuta 2013 13:36
Vastaanottaja: Christer Holmberg
Kopio: stox@ietf.org
Aihe: Re: [Stox] Media Sessions (draft-ietf-stox-media-01) and forking


On Aug 2, 2013, at 12:30 PM, Christer Holmberg <christer.holmberg@ericsson.com<mailto:christer.holmberg@ericsson.com>> wrote:


Hi Adrian,

>I would suggest that best practice is for the SIP traffic to be routed to the SIP Proxy/Registrar/Presence Agent of the given domain behind the gateway. That element has more proper capabilities for handling forking or any other SIP features.

Ok, but how are you going to ensure that such element exists?

The gateway knows, it queries the DNS for the domain SIP service records. If no proper records exist, the call flow will stop as there is nothing to rote the calls flows to.

Such gateway, its very existence, implies that there is both a SIP Server and and XMPP server for each domain. It is a cross protocol federation, the domain must exists otherwise there is nothing to gateway to and there is no reason to deploy it.

Adrian


Regards,

Christer





Otherwise you will move all SIP functionality into the XMPP gateway and must document that whole SIP universe as running inside that gateway, which makes little sense.

Regards,
Adrian

On Aug 2, 2013, at 12:16 PM, Christer Holmberg <christer.holmberg@ericsson.com<mailto:christer.holmberg@ericsson.com>> wrote:



Hi,

As I indicated at the STOX session (and was later repeated by Jonathan Lennox), the draft need to have a story on SIP forking, e.g. if what happens if the INVITE sent from the interworking node gets forked, and multiple early dialogs are created.

Regards,

Christer

_______________________________________________
stox mailing list
stox@ietf.org<mailto:stox@ietf.org>
https://www.ietf.org/mailman/listinfo/stox

_______________________________________________
stox mailing list
stox@ietf.org<mailto:stox@ietf.org>
https://www.ietf.org/mailman/listinfo/stox

v2.23.0 | Report a Bug | By Email