Using the SDP Offer/Answer Mechanism for DTLS
draft-ietf-mmusic-dtls-sdp-28

Document Type Active Internet-Draft (mmusic WG)
Last updated 2017-08-14 (latest revision 2017-08-05)
Replaces draft-holmberg-mmusic-sdp-dtls
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2017 - Using the SDP Offer/... )
Document shepherd Flemming Andreasen
Shepherd write-up Show (last changed 2017-02-15)
IESG IESG state IESG Evaluation
Consensus Boilerplate Yes
Telechat date On agenda of 2017-08-17 IESG telechat
Has 3 DISCUSSes. Needs 6 more YES or NO OBJECTION positions to pass.
Responsible AD Ben Campbell
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Network Working Group                                        C. Holmberg
Internet-Draft                                                  Ericsson
Updates: 5763,7345 (if approved)                              R. Shpount
Intended status: Standards Track                             TurboBridge
Expires: February 6, 2018                                 August 5, 2017

             Using the SDP Offer/Answer Mechanism for DTLS
                   draft-ietf-mmusic-dtls-sdp-28.txt

Abstract

   This document defines the SDP offer/answer procedures for negotiating
   and establishing a DTLS association.  The document also defines the
   criteria for when a new DTLS association must be established.  The
   document updates RFC 5763 and RFC 7345, by replacing common SDP
   offer/answer procedures with a reference to this specification.

   This document defines a new SDP media-level attribute, 'tls-id'.

   This document also defines how the 'tls-id' attribute can be used for
   negotiating and establishing a TLS connection, in conjunction with
   the procedures in RFC 4145 and RFC 8122.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://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 February 6, 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

Holmberg & Shpount      Expires February 6, 2018                [Page 1]
Internet-DraftUsing the SDP Offer/Answer Mechanism for DTLS  August 2017

   (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
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Establishing a new DTLS Association . . . . . . . . . . . . .   4
     3.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Change of Local Transport Parameters  . . . . . . . . . .   4
     3.3.  Change of ICE ufrag value . . . . . . . . . . . . . . . .   5
   4.  SDP tls-id Attribute  . . . . . . . . . . . . . . . . . . . .   5
   5.  SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . .   6
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.2.  Generating the Initial SDP Offer  . . . . . . . . . . . .   8
     5.3.  Generating the Answer . . . . . . . . . . . . . . . . . .   9
     5.4.  Offerer Processing of the SDP Answer  . . . . . . . . . .  10
     5.5.  Modifying the Session . . . . . . . . . . . . . . . . . .  10
   6.  ICE Considerations  . . . . . . . . . . . . . . . . . . . . .  11
   7.  Transport Protocol Considerations . . . . . . . . . . . . . .  11
     7.1.  Transport Re-Usage  . . . . . . . . . . . . . . . . . . .  11
   8.  TLS Considerations  . . . . . . . . . . . . . . . . . . . . .  12
   9.  SIP Considerations  . . . . . . . . . . . . . . . . . . . . .  13
   10. RFC Updates . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  General  . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.2.  Update to RFC 5763 . . . . . . . . . . . . . . . . . . .  14
       10.2.1.  Update to section 1  . . . . . . . . . . . . . . . .  14
       10.2.2.  Update to section 5  . . . . . . . . . . . . . . . .  14
       10.2.3.  Update to section 6.6  . . . . . . . . . . . . . . .  15
       10.2.4.  Update to section 6.7.1  . . . . . . . . . . . . . .  16
     10.3.  Update to RFC 7345 . . . . . . . . . . . . . . . . . . .  16
       10.3.1.  Update to section 4  . . . . . . . . . . . . . . . .  16
       10.3.2.  Update to section 5.2.1  . . . . . . . . . . . . . .  16
       10.3.3.  Update to section 10.1 . . . . . . . . . . . . . . .  17
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  17
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