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Stream Control Transmission Protocol (SCTP)-Based Media Transport in the Session Description Protocol (SDP)
draft-ietf-mmusic-sctp-sdp-11

Document type: Active Internet-Draft (mmusic WG)
Document stream: IETF
Last updated: 2014-12-19
Intended RFC status: Unknown
Other versions: plain text, xml, pdf, html

IETF State: WG Document Jan 2015
Document shepherd: Flemming Andreasen

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

MMUSIC                                                       C. Holmberg
Internet-Draft                                                 S. Loreto
Intended status: Standards Track                            G. Camarillo
Expires: June 22, 2015                                          Ericsson
                                                       December 19, 2014

Stream Control Transmission Protocol (SCTP)-Based Media Transport in the
                   Session Description Protocol (SDP)
                     draft-ietf-mmusic-sctp-sdp-11

Abstract

   SCTP (Stream Control Transmission Protocol) is a transport protocol
   used to establish associations between two endpoints.

   This specification describes how to describe SCTP associations using
   the Session Description Protocol (SDP), and defines the following new
   SDP Media Description protocol identifiers (proto values):'SCTP',
   'SCTP/DTLS', 'UDP/DTLS/SCTP' and 'TCP/DTLS/SCTP'.

   The specification also describes how to use the new proto values
   together with the SDP Offer/Answer mechanism in order to negotiate
   and establish SCTP associations, and how to indicate the SCTP
   application usage.

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 http://datatracker.ietf.org/drafts/current/.

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   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 June 22, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Holmberg, et al.          Expires June 22, 2015                 [Page 1]
Internet-Draft    The SCTP protocol identifier for SDP     December 2014

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  SCTP Terminology  . . . . . . . . . . . . . . . . . . . . . .   4
   4.  SDP Media Descriptions  . . . . . . . . . . . . . . . . . . .   4
     4.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.2.  Protocol Identifiers  . . . . . . . . . . . . . . . . . .   5
     4.3.  Media Format Management . . . . . . . . . . . . . . . . .   5
     4.4.  Syntax  . . . . . . . . . . . . . . . . . . . . . . . . .   6
     4.5.  Example . . . . . . . . . . . . . . . . . . . . . . . . .   6
   5.  SDP 'sctp-port' Attribute . . . . . . . . . . . . . . . . . .   6
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.2.  Syntax  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  SDP 'max-message-size' Attribute  . . . . . . . . . . . . . .   7
     6.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   7
     6.2.  Syntax  . . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  SDP 'fmtp' Attribute  . . . . . . . . . . . . . . . . . . . .   7
   8.  UDP/DTLS/SCTP Transport Realization . . . . . . . . . . . . .   7
   9.  TCP/DTLS/SCTP Transport Realization . . . . . . . . . . . . .   8
   10. SCTP Association Management . . . . . . . . . . . . . . . . .   8
     10.1.  General  . . . . . . . . . . . . . . . . . . . . . . . .   8
     10.2.  SDP sendrecv/sendonly/sendrecv/inactive Attribute  . . .   8
     10.3.  SDP setup Attribute  . . . . . . . . . . . . . . . . . .   8
       10.3.1.  General  . . . . . . . . . . . . . . . . . . . . . .   8
       10.3.2.  SCTP Association Initiation  . . . . . . . . . . . .   9
       10.3.3.  TLS Role Determination . . . . . . . . . . . . . . .   9
     10.4.  SDP connection Attribute . . . . . . . . . . . . . . . .   9
   11. SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . .  10
     11.1.  General  . . . . . . . . . . . . . . . . . . . . . . . .  10

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