Session Description Protocol (SDP) Offer/Answer Considerations for Datagram Transport Layer Security (DTLS) and Transport Layer Security (TLS)
draft-ietf-mmusic-dtls-sdp-32

Document Type Active Internet-Draft (mmusic WG)
Last updated 2017-11-03 (latest revision 2017-10-29)
Replaces draft-holmberg-mmusic-sdp-dtls
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Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2017 - Using the SDP Offer/... )
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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: May 2, 2018                                    October 29, 2017

   Session Description Protocol (SDP) Offer/Answer Considerations for
 Datagram Transport Layer Security (DTLS) and Transport Layer Security
                                 (TLS)
                   draft-ietf-mmusic-dtls-sdp-32.txt

Abstract

   This document defines the Session Description Protocol (SDP) offer/
   answer procedures for negotiating and establishing a Datagram
   Transport Layer Security (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 Transport Layer Security (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
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 2, 2018.

Holmberg & Shpount         Expires May 2, 2018                  [Page 1]
Internet-DrafSession Description Protocol (SDP) Offer/Answe October 2017

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
   (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
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   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.  Establishing a new DTLS Association . . . . . . . . . . . . .   4
     3.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Change of Local Transport Parameters  . . . . . . . . . .   5
     3.3.  Change of ICE ufrag value . . . . . . . . . . . . . . . .   5
   4.  SDP tls-id Attribute  . . . . . . . . . . . . . . . . . . . .   5
   5.  SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . .   7
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.2.  Generating the Initial SDP Offer  . . . . . . . . . . . .   9
     5.3.  Generating the Answer . . . . . . . . . . . . . . . . . .  10
     5.4.  Offerer Processing of the SDP Answer  . . . . . . . . . .  11
     5.5.  Modifying the Session . . . . . . . . . . . . . . . . . .  11
   6.  ICE Considerations  . . . . . . . . . . . . . . . . . . . . .  12
   7.  TLS Considerations  . . . . . . . . . . . . . . . . . . . . .  12
   8.  SIP Considerations  . . . . . . . . . . . . . . . . . . . . .  14
   9.  RFC Updates . . . . . . . . . . . . . . . . . . . . . . . . .  14
     9.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .  14
     9.2.  Update to RFC 5763  . . . . . . . . . . . . . . . . . . .  14
       9.2.1.  Update to section 1 . . . . . . . . . . . . . . . . .  14
       9.2.2.  Update to section 5 . . . . . . . . . . . . . . . . .  15
       9.2.3.  Update to section 6.6 . . . . . . . . . . . . . . . .  16
       9.2.4.  Update to section 6.7.1 . . . . . . . . . . . . . . .  16
     9.3.  Update to RFC 7345  . . . . . . . . . . . . . . . . . . .  17
       9.3.1.  Update to section 4 . . . . . . . . . . . . . . . . .  17
       9.3.2.  Update to section 5.2.1 . . . . . . . . . . . . . . .  17
       9.3.3.  Update to section 10.1  . . . . . . . . . . . . . . .  18
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