Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage-data-channel-16
Christer Holmberg <christer.holmberg@ericsson.com> Wed, 13 May 2020 17:18 UTC
Return-Path: <christer.holmberg@ericsson.com>
X-Original-To: mmusic@ietfa.amsl.com
Delivered-To: mmusic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1108C3A0807 for <mmusic@ietfa.amsl.com>; Wed, 13 May 2020 10:18:16 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.274
X-Spam-Level:
X-Spam-Status: No, score=-2.274 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.173, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=ericsson.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5SjF8xi9qaHN for <mmusic@ietfa.amsl.com>; Wed, 13 May 2020 10:18:14 -0700 (PDT)
Received: from EUR04-VI1-obe.outbound.protection.outlook.com (mail-eopbgr80052.outbound.protection.outlook.com [40.107.8.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id AFCD53A0FB4 for <mmusic@ietf.org>; Wed, 13 May 2020 10:18:01 -0700 (PDT)
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=DCRXyLO3+AzxbDrj+2EPSlttoGdG4VsuQ88MZjejJUjzH88xkpusamnCUokkNfazp+gHgdcS5CAc3SNvQkXVxcZoTYw5+mojRNxki7gUvx36AmNLEG3Vw//tjH4uKRQ6Tu0fwtexTbi7mLTS3D5eGP87A5Qffy48zaj8G+AWYiz16I+e5/nnjGX0yt8mhjroCTUOXY+1PCBW/PhERSmvpKr2zQp25XVTgmuuUYAo8s1x9G4RUANxnrThqV43JWFnRxPc79QqsTD2Ko2bx47rKwWIghsWRzbcFvWU4o9wc4VQU54D49IPtaQA4ZlN5xcLHIepEbvEnD6QTAjqspZJqw==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=yrp0ADAkbLHkPTzTv1YhgnNpLwp4hrJT3kD6jH2UkGE=; b=P70vqGnjFdSMr+ZGzVF31GyBiQgCl5LH/oNEtMzRhbw+JqkQhDJnYmHzgcAoOM8Jz0HvUu44Z5ISTQv1qCbkuGkS8dQSmI/Ok1cJWYd7+tUOAvp5zV6lpaygO4CT56dLZo+P8l06Vh2EEYON/NtW8umA02pcq5HUKleG/Cyo8GpN6ElDuTJjERtLQZUl0uEGBBz9dRa04Hfvnl6QAjfit7u6m+4Sx8R7ziR3fn1Ii1fDz8tBObjvXBWrFEruxJrH9vX+t8KIT6oTsJ9fyO+ZUqYliijK24dojxY2rnGSk29lI+/SzjP6ySJrJ6XqUPHBU/u7uFqENjpqu/qnuIeDdg==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=ericsson.com; dmarc=pass action=none header.from=ericsson.com; dkim=pass header.d=ericsson.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericsson.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=yrp0ADAkbLHkPTzTv1YhgnNpLwp4hrJT3kD6jH2UkGE=; b=hSIVyyDPZRUyTrjA1mvTVDwmM5XlglzikE9fap1V+yN2Fjc8xE9v6n0yp6Vb+JDbZFLY59pPJfZvXEuRoln5AjR3lALEaWg+Sj5fafBNPVXr/XU6rFlHp1UIl6dGh4yQR9cHVb4IjaX/hnu53Et0JVLuLG6A8i1JaFU8gKcTmsI=
Received: from AM7PR07MB7012.eurprd07.prod.outlook.com (2603:10a6:20b:1bc::19) by AM7PR07MB6500.eurprd07.prod.outlook.com (2603:10a6:20b:1ac::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3000.15; Wed, 13 May 2020 17:17:58 +0000
Received: from AM7PR07MB7012.eurprd07.prod.outlook.com ([fe80::7529:b51f:5fb4:62b9]) by AM7PR07MB7012.eurprd07.prod.outlook.com ([fe80::7529:b51f:5fb4:62b9%5]) with mapi id 15.20.3000.016; Wed, 13 May 2020 17:17:58 +0000
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage-data-channel-16
Thread-Index: AdYjuWxe8jgvP3HuS5indZrl5qmwswAz05MAAA2vHYAAdPeWgAAO04paAFkhMQAABDvDgAALmfMA///gZACAADfPgIABZyqAgABi04A=
Date: Wed, 13 May 2020 17:17:58 +0000
Message-ID: <E3EB3037-335E-4121-AA72-230B7353CEDF@ericsson.com>
References: <HE1PR07MB4426ADA1E4B1D696A48BA9A98DA40@HE1PR07MB4426.eurprd07.prod.outlook.com> <66bc33b6-8a66-1da3-93c0-e7ddc31cc605@alum.mit.edu> <2F549E6E-1250-426F-8602-99CB44C84365@ericsson.com> <ef5b4ef8-4063-e38e-d300-185a933cc3dc@ch3m4.com> <AM7PR07MB7012D222A4AF5FD13FCC8C3793A00@AM7PR07MB7012.eurprd07.prod.outlook.com> <a3210a85-e69d-2bfc-a802-7649c70a6534@ch3m4.com> <60ab60db-f81a-904a-0481-935fa3156a9e@ch3m4.com> <80F9E944-16A1-4D14-8691-181A6089B4D1@ericsson.com> <822e1c54-77fd-bf15-1139-94a8e08442aa@alum.mit.edu> <F8C86ECB-9489-40AD-8BA0-CF89EC370CF2@ericsson.com> <308616ac-cd24-341e-be31-4b348d803889@alum.mit.edu>
In-Reply-To: <308616ac-cd24-341e-be31-4b348d803889@alum.mit.edu>
Accept-Language: en-US
Content-Language: en-GB
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/16.36.20041300
authentication-results: alum.mit.edu; dkim=none (message not signed) header.d=none;alum.mit.edu; dmarc=none action=none header.from=ericsson.com;
x-originating-ip: [188.127.223.154]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 5fc74c55-35d2-4184-2b0f-08d7f7619519
x-ms-traffictypediagnostic: AM7PR07MB6500:
x-microsoft-antispam-prvs: <AM7PR07MB6500CFF9DC56700FAA57EE7193BF0@AM7PR07MB6500.eurprd07.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:5797;
x-forefront-prvs: 0402872DA1
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: 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
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:AM7PR07MB7012.eurprd07.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(366004)(39860400002)(136003)(396003)(376002)(346002)(33430700001)(478600001)(6486002)(33656002)(66446008)(64756008)(66476007)(66946007)(86362001)(76116006)(44832011)(66556008)(110136005)(5660300002)(8676002)(91956017)(2616005)(71200400001)(6512007)(6506007)(26005)(316002)(36756003)(2906002)(186003)(33440700001)(8936002); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata: 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
x-ms-exchange-transport-forked: True
Content-Type: text/plain; charset="utf-8"
Content-ID: <2B4E98869C46314D93E9AE9D8F421645@eurprd07.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: ericsson.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 5fc74c55-35d2-4184-2b0f-08d7f7619519
X-MS-Exchange-CrossTenant-originalarrivaltime: 13 May 2020 17:17:58.0432 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 92e84ceb-fbfd-47ab-be52-080c6b87953f
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: /sjtal5lMpKndYHrCxgZjkpCxWhWM5YHbgRhJLs7nM/x7LyOxkZbYtnjlGrnzyz/X6odwFAqYtjEUBPENNuxXK4gu9pY0YSRAWYXRfivzzA=
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR07MB6500
Archived-At: <https://mailarchive.ietf.org/arch/msg/mmusic/Yt-8b7jmVwH-2FJMvq-Dug0wJ-E>
Subject: Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage-data-channel-16
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Multiparty Multimedia Session Control Working Group <mmusic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mmusic>, <mailto:mmusic-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mmusic/>
List-Post: <mailto:mmusic@ietf.org>
List-Help: <mailto:mmusic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mmusic>, <mailto:mmusic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 13 May 2020 17:18:16 -0000
Hi, >>>>>- Added text to make more clear the scope of path and MSRP URI: >>>> >>>>>Data channels are negotiated independently of the value of the "path" >>>> attribute. This means that when MSRP messages are transported on a data >>>> channel, the "path" attribute >>>> >>>>>is not used for transport negotiation or routing of the messages. MSRP >>>> endpoints using data channels can set the value of the "path" attribute, >>>> including the MSRP URI, and use it as described in RFC4975 >>>> >>>> I think we need to be a little more explicit, so I suggest something like: >>>> >>>> "When MSRP messages are transported on a data channel, the "path" >>>> attribute is not used for routing of the messages. The MSRP data channel >>>> is established using the SDP offer/answer procedures defined in >>>> [I-D.ietf-rtcweb-data-channel], and the MSRP messages are then >>>> transported on that data channel. Because of that an MSRP endpoint can >>>> set the MSRP-URI authority value of the "path" attribute at its own >>>> discretion, following the syntax and rules in [RFC4975]." >>> >>> I'm concerned that this might imply that an msrp(s) URI is not >>> sufficient information to establish communication. (That some additional >>> information, received out-of-band, might be a prerequisite.) >>> >>> Do you intend that to be a possible situation? >>> >>> I would hope that it is not - that an msrp(s) URI is sufficient. In that >>> case, both the transport setup and the path attribute would be derived >>> from the same source. >> >> I am not sure I understand.... >> >> The MSRP URI is *not* enough to establish the SCTP association and the data channel. The procedures >> for establishing a data channel are defined in [I-D.ietf-rtcweb-data-channel], and then each usage have some specific attribute values etc. >> >> We are not modifying the procedures how to establish a data channel - we are defining how to send MSRP messages over a data channel. > > [I-D.ietf-rtcweb-data-channel] defines *procedures* for establishing a > data channel, just as SIP provides procedures for establishing a sip > session. In both cases, those procedures must be parameterized. In the > case of SIP a sip URI is generally sufficient. (In some environments you > might need some extra environmental information, such as how to get > yourself registered first and the need to use an access proxy.) > > In this case, the msrp(s) uri should provide all the parameterizing > information I need to send msrp messages to this destination, over and > above info about my environment and basic standards. The "dc" parameter > in the URI tells me that I need use a data channel. > > I shouldn't need to supply any extra information *about the destination*. You know that you are going to send the MSRP message on the data channel - that's all you need to know. Regards, Christer
- [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage-dat… Bo Burman
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Bo Burman
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Keith Drage
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Gunnar Hellström
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Paul Kyzivat
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Jose M Recio
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Bo Burman
- Re: [MMUSIC] WGLC on draft-ietf-mmusic-msrp-usage… Christer Holmberg