IETF Logo Mail Archive

Re: [rtcweb] draft-ietf-rtcweb-rtp-usage-12 Client-to-Mixer Audio Level

"Matthew Kaufman (SKYPE)" <matthew.kaufman@skype.net> Wed, 05 March 2014 16:35 UTC

Return-Path: <matthew.kaufman@skype.net>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B7CB61A01BF for <rtcweb@ietfa.amsl.com>; Wed, 5 Mar 2014 08:35:16 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.901
X-Spam-Level:
X-Spam-Status: No, score=-1.901 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_PASS=-0.001] autolearn=ham
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 uHDQ8XO_t4f1 for <rtcweb@ietfa.amsl.com>; Wed, 5 Mar 2014 08:35:14 -0800 (PST)
Received: from na01-bn1-obe.outbound.protection.outlook.com (mail-bn1lp0144.outbound.protection.outlook.com [207.46.163.144]) by ietfa.amsl.com (Postfix) with ESMTP id CE6FE1A00E9 for <rtcweb@ietf.org>; Wed, 5 Mar 2014 08:35:13 -0800 (PST)
Received: from BY2PR03CA052.namprd03.prod.outlook.com (10.141.249.25) by BY2PR03MB012.namprd03.prod.outlook.com (10.255.240.38) with Microsoft SMTP Server (TLS) id 15.0.898.11; Wed, 5 Mar 2014 16:35:08 +0000
Received: from BY2FFO11FD063.protection.gbl (2a01:111:f400:7c0c::125) by BY2PR03CA052.outlook.office365.com (2a01:111:e400:2c5d::25) with Microsoft SMTP Server (TLS) id 15.0.888.9 via Frontend Transport; Wed, 5 Mar 2014 16:35:08 +0000
Received: from mail.microsoft.com (131.107.125.37) by BY2FFO11FD063.mail.protection.outlook.com (10.1.15.197) with Microsoft SMTP Server (TLS) id 15.0.888.9 via Frontend Transport; Wed, 5 Mar 2014 16:35:08 +0000
Received: from TK5EX14MBXC296.redmond.corp.microsoft.com ([169.254.2.186]) by TK5EX14HUBC107.redmond.corp.microsoft.com ([157.54.80.67]) with mapi id 14.03.0174.002; Wed, 5 Mar 2014 16:34:32 +0000
From: "Matthew Kaufman (SKYPE)" <matthew.kaufman@skype.net>
To: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>
Thread-Topic: [rtcweb] draft-ietf-rtcweb-rtp-usage-12 Client-to-Mixer Audio Level
Thread-Index: AQHPOG7/fizbxTQF/UyT77go6S8SfprShUWAgAAB54CAAAWJAIAAFmgAgAAKZoCAAAMxBA==
Date: Wed, 05 Mar 2014 16:34:32 +0000
Message-ID: <212442C8-F66F-4D7A-B64D-C37629B1F710@skype.net>
References: <1BC59A5D-D1C9-4E3F-ABFB-C1D664CD7ACF@cisco.com> <EEF5B1D0-7782-4EB8-90DF-F1D56B2D2ADC@phonefromhere.com> <0526965B-6AC9-42F4-9E62-CF3BF29872D3@cisco.com> <CAOJ7v-3JAKZDHtrx9J2v=hqksQ9xdz7XW_1HbqioEzWMqUrn7A@mail.gmail.com> <E7C174FB-B137-4E6D-81AC-06C8C2B30FE1@vidyo.com>, <53174F6B.2030706@gmail.com>
In-Reply-To: <53174F6B.2030706@gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Content-Type: text/plain; charset="Windows-1252"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-EOPAttributedMessage: 0
X-Forefront-Antispam-Report: CIP:131.107.125.37; CTRY:US; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10009001)(6009001)(438001)(51704005)(24454002)(189002)(199002)(479174003)(377454003)(52034003)(94946001)(84676001)(74502001)(69226001)(93136001)(31966008)(81816001)(56816005)(85306002)(47446002)(95416001)(82746002)(15975445006)(20776003)(87936001)(81686001)(86362001)(63696002)(83716003)(23746002)(53806001)(93516002)(54356001)(77982001)(59766001)(47776003)(6806004)(81342001)(81542001)(36756003)(74706001)(4396001)(44976005)(92566001)(76786001)(79102001)(76796001)(92726001)(51856001)(46102001)(19580405001)(77096001)(83322001)(50986001)(76482001)(54316002)(80022001)(87266001)(95666003)(33656001)(19580395003)(90146001)(83072002)(85852003)(47736001)(49866001)(47976001)(80976001)(2656002)(94316002)(65816001)(74876001)(74366001); DIR:OUT; SFP:1101; SCL:1; SRVR:BY2PR03MB012; H:mail.microsoft.com; FPR:F4DAF53D.ACD88BDB.3DD8954B.42E3DBC1.20274; MLV:sfv; PTR:InfoDomainNonexistent; MX:1; A:1; LANG:en;
X-O365ENT-EOP-Header: Message processed by - O365_ENT: Allow from ranges (Engineering ONLY)
X-Forefront-PRVS: 01415BB535
Received-SPF: Pass (: domain of skype.net designates 131.107.125.37 as permitted sender) receiver=; client-ip=131.107.125.37; helo=mail.microsoft.com;
X-OriginatorOrg: skype.net
Archived-At: http://mailarchive.ietf.org/arch/msg/rtcweb/tV5FrA8Q-IPZLwQgwq4FPJIZ-K8
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] draft-ietf-rtcweb-rtp-usage-12 Client-to-Mixer Audio Level
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb/>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 05 Mar 2014 16:35:16 -0000

EKT is one possible answer to this concern.

By the way: If and when we specify EKT for RTCWEB, there is a simple rule we should establish: A "browser" must not initiate the use of EKT. That way, browser to browser sessions would be unable to force a known key... That could only happen when talking to non-browser endpoints (likely mixers)

Matthew Kaufman

Sent from my iPad

> On Mar 5, 2014, at 8:23 AM, "Sergio Garcia Murillo" <sergio.garcia.murillo@gmail.com> wrote:
> 
> El 05/03/2014 16:45, Jonathan Lennox escribió:
>> 
>> That said, I’m not sure I believe in Cullen’s use case — there’s too much other information that this unauthorized conference mixer wouldn’t be able to do.  (e.g., request I-frames, or detect them, for switching; or generate proper RTCP reports for sometimes-on streams). 
> 
> I have deeper doubts, I don't really know how a RTP router/mixer would be able to work without acting as DTLS endpoint and decripting/encripting the RTP data.  Or is there a way to setup/share a DTLS session between more than two peers so the same DTLS/SRTP packet is decriptable by more than one receiver?
> 
> Best regards
> Sergio
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb

v2.23.0 | Report a Bug | By Email