MSRP over Data Channels
draft-ietf-mmusic-msrp-usage-data-channel-07

Document Type Active Internet-Draft (mmusic WG)
Last updated 2017-09-10
Replaces draft-ejzak-mmusic-msrp-usage-data-channel
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Stream WG state WG Document (wg milestone: Mar 2018 - Submit MSRP over Dat... )
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MMUSIC                                                     K. Drage, Ed.
Internet-Draft                                              Unaffiliated
Intended status: Standards Track                             M. Makaraju
Expires: March 14, 2018                                            Nokia
                                                     J. Stoetzer-Bradler
                                                                R. Ejzak
                                                               J. Marcon
                                                            Unaffiliated
                                                      September 10, 2017

                        MSRP over Data Channels
              draft-ietf-mmusic-msrp-usage-data-channel-07

Abstract

   This document specifies how the Message Session Relay Protocol (MSRP)
   can be instantiated as a data channel sub-protocol, using the SDP
   offer/answer exchange-based generic data channel negotiation
   framework.  Two network configurations are documented: a WebRTC end-
   to-end configuration (connecting two MSRP over data channel
   endpoints), and a gateway configuration (connecting an MSRP over data
   channel endpoint with an MSRP over TCP endpoint).

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 14, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

Drage, et al.            Expires March 14, 2018                 [Page 1]
Internet-Draft           MSRP over Data Channels          September 2017

   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Principles  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  MSRP Data Channel . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Session Mapping . . . . . . . . . . . . . . . . . . . . .   4
     4.3.  MSRP URI  . . . . . . . . . . . . . . . . . . . . . . . .   5
     4.4.  msrp-scheme . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  End-to-End Configuration  . . . . . . . . . . . . . . . . . .   5
     5.1.  Basic MSRP Support  . . . . . . . . . . . . . . . . . . .   5
       5.1.1.  Session Negotiation . . . . . . . . . . . . . . . . .   5
         5.1.1.1.  Use of the dcmap Attribute  . . . . . . . . . . .   5
         5.1.1.2.  Use of the dcsa Attribute . . . . . . . . . . . .   6
         5.1.1.3.  Use of the setup Attribute  . . . . . . . . . . .   6
         5.1.1.4.  Example SDP Negotiation . . . . . . . . . . . . .   7
       5.1.2.  Session Opening . . . . . . . . . . . . . . . . . . .   8
       5.1.3.  Data Framing  . . . . . . . . . . . . . . . . . . . .   8
       5.1.4.  Data Sending and Reporting  . . . . . . . . . . . . .   9
       5.1.5.  Session Closing . . . . . . . . . . . . . . . . . . .   9
     5.2.  Support for MSRP File Transfer Function . . . . . . . . .   9
   6.  Gateway Configuration . . . . . . . . . . . . . . . . . . . .  10
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     8.1.  Subprotocol Identifier MSRP . . . . . . . . . . . . . . .  11
     8.2.  setup Attribute . . . . . . . . . . . . . . . . . . . . .  11
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   10. CHANGE LOG  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     10.1.  Changes against 'draft-ietf-mmusic-msrp-usage-data-
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