IETF Logo Mail Archive

Re: [MMUSIC] SDPNEG: How to disable DCEP

Christer Holmberg <christer.holmberg@ericsson.com> Fri, 26 April 2019 09:37 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 86F901202F0 for <mmusic@ietfa.amsl.com>; Fri, 26 Apr 2019 02:37:45 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.001
X-Spam-Level:
X-Spam-Status: No, score=-2.001 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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 rLap-OLu3yFs for <mmusic@ietfa.amsl.com>; Fri, 26 Apr 2019 02:37:42 -0700 (PDT)
Received: from EUR01-DB5-obe.outbound.protection.outlook.com (mail-eopbgr150057.outbound.protection.outlook.com [40.107.15.57]) (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 6E966120075 for <mmusic@ietf.org>; Fri, 26 Apr 2019 02:37:42 -0700 (PDT)
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=c3BKKk5rUg5HmJjP1ry8vX/TVs9rwOyhJRyPEYlLndQ=; b=WkI3cVreqwGGEqyXTudjqQCXxRS8zArBunso+pMTdeh8jWrwDaIvEZfk+KzvVA4tfrpEKKB0onXmROxwQIIFARfsbEyHHdGNSsj3kE6GUkk1EcNn+ehf4szPfbQNaV6RTVoQk48KINv4w5XmS7vdTXdDSO0APvJG7Nc5xgtRTjI=
Received: from VI1PR07MB3167.eurprd07.prod.outlook.com (10.175.243.17) by VI1PR07MB5966.eurprd07.prod.outlook.com (20.178.81.154) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1856.5; Fri, 26 Apr 2019 09:37:39 +0000
Received: from VI1PR07MB3167.eurprd07.prod.outlook.com ([fe80::d925:d8b5:d1df:4706]) by VI1PR07MB3167.eurprd07.prod.outlook.com ([fe80::d925:d8b5:d1df:4706%4]) with mapi id 15.20.1856.004; Fri, 26 Apr 2019 09:37:39 +0000
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Paul Kyzivat <pkyzivat@alum.mit.edu>, "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: [MMUSIC] SDPNEG: How to disable DCEP
Thread-Index: AQHU+njrOtTA5N+Kv0Ox965sWihq+KZL5CwAgAKAjYA=
Date: Fri, 26 Apr 2019 09:37:39 +0000
Message-ID: <81169C37-95F2-418A-A221-CCC623392CD2@ericsson.com>
References: <8A9AAAC7-FB2D-4884-BAC6-268B98C7A0F0@ericsson.com> <eba7d468-a2a3-8c5f-c2b0-fa515fb2e55c@alum.mit.edu>
In-Reply-To: <eba7d468-a2a3-8c5f-c2b0-fa515fb2e55c@alum.mit.edu>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/10.18.0.190414
authentication-results: spf=none (sender IP is ) smtp.mailfrom=christer.holmberg@ericsson.com;
x-originating-ip: [89.166.49.243]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: c85851d3-7f13-45fd-5862-08d6ca2ad324
x-microsoft-antispam: BCL:0; PCL:0; RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(2017052603328)(7193020); SRVR:VI1PR07MB5966;
x-ms-traffictypediagnostic: VI1PR07MB5966:
x-ms-exchange-purlcount: 1
x-microsoft-antispam-prvs: <VI1PR07MB5966BFA0217620E49321B535933E0@VI1PR07MB5966.eurprd07.prod.outlook.com>
x-forefront-prvs: 001968DD50
x-forefront-antispam-report: SFV:NSPM; SFS:(10009020)(136003)(376002)(39860400002)(346002)(396003)(366004)(189003)(199004)(76116006)(2501003)(2171002)(66556008)(478600001)(66946007)(229853002)(64756008)(66446008)(73956011)(91956017)(66476007)(7736002)(68736007)(256004)(6512007)(8676002)(966005)(76176011)(53936002)(305945005)(186003)(2906002)(14454004)(3846002)(53546011)(5660300002)(6506007)(6116002)(26005)(6246003)(97736004)(33656002)(102836004)(81166006)(81156014)(8936002)(110136005)(58126008)(486006)(71200400001)(71190400001)(44832011)(316002)(83716004)(66066001)(446003)(11346002)(25786009)(86362001)(82746002)(2616005)(36756003)(6306002)(6486002)(6436002)(99286004)(476003); DIR:OUT; SFP:1101; SCL:1; SRVR:VI1PR07MB5966; H:VI1PR07MB3167.eurprd07.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1;
received-spf: None (protection.outlook.com: ericsson.com does not designate permitted sender hosts)
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam-message-info: YZQU3fdvh7NZWwmb+uy5Jy2V81Z54FV2KKsPopUBSLeSlfuXzNGM+jtuYiMuxM98qcAuorLL05UMrviTdTDFnG0UOFHsQv2CgY2Rb4VlbspDgvyFFYrABopmWTR78iFuepNqn//0NFxZfYfx6qc4ibgH5SKMolYygdqZgV9YwiZVziebC7+cOCIY3uqBELtapOg9Vk8a/55NNfY8TAlypvL7In+J9NSKViWdpM4gqNKdY1GjhsC0Il+MSxcN3U9s1CILQ1qz3k3v5cxwIbxH8AK2KKtlFsXiz/W6E7OkwLSFvUPCcLCDD+Bn6d8602StfHdWAjYhchsPzViZ5K4q7XctF8LCOuRiXA6pzgOPZGo8D7syddETz1QVRvPedieSvFH2JJnVgc9PctQ3aHSu1W64MF9CLBBKLiXAm7u5sdg=
Content-Type: text/plain; charset="utf-8"
Content-ID: <5C80FEC2344E6046895C236BD21E9CB0@eurprd07.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: ericsson.com
X-MS-Exchange-CrossTenant-Network-Message-Id: c85851d3-7f13-45fd-5862-08d6ca2ad324
X-MS-Exchange-CrossTenant-originalarrivaltime: 26 Apr 2019 09:37:39.8496 (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-Transport-CrossTenantHeadersStamped: VI1PR07MB5966
Archived-At: <https://mailarchive.ietf.org/arch/msg/mmusic/EGlJjiznsNQVG5bKA_7kDaaRsLw>
Subject: Re: [MMUSIC] SDPNEG: How to disable DCEP
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: Fri, 26 Apr 2019 09:37:45 -0000

Hi Paul,

So, what is your suggestion? __

Regards,

Christer

On 25/04/2019, 1.25, "mmusic on behalf of Paul Kyzivat" <mmusic-bounces@ietf.org on behalf of pkyzivat@alum.mit.edu> wrote:

    On 4/24/19 4:37 AM, Christer Holmberg wrote:
    > Hi,
    > 
    > I had an off-line discussion with Bo regarding how to know whether to 
    > use SDPNEG or DCEP for a Data Channel.
    > 
    > Section 5 says:
    > 
    >     ”This section defines two new SDP media-level attributes that can be
    > 
    >     used together with the SDP Offer/Answer mechanism to negotiate data
    > 
    >     channel-specific and subprotocol-specific parameters without the
    > 
    >     usage of DCEP [I-D.ietf-rtcweb-data-protocol].”
    > 
    > Do we consider this clear enough that the presence of those attributes 
    > (well, only dcmap, since dcsa is optional) will “disable” usage of DCEP, 
    > or do we want to be more clear?
    
    The distribution of specs across multiple documents makes it really 
    fuzzy what is normative for what.
    
    Perhaps something should be said about the validity of using a 
    webrtc-datachannel media stream for establishing data channels via SDP 
    with dcmap and/or DCEP. I don't think this is said anywhere else.
    
    	Thanks,
    	Paul
    
    _______________________________________________
    mmusic mailing list
    mmusic@ietf.org
    https://www.ietf.org/mailman/listinfo/mmusic

v2.23.0 | Report a Bug | By Email