Using the SDP Offer/Answer Mechanism for DTLS
draft-ietf-mmusic-dtls-sdp-03

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Document Type Active Internet-Draft (mmusic WG)
Last updated 2015-12-08
Replaces draft-holmberg-mmusic-sdp-dtls
Stream IETF
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Network Working Group                                        C. Holmberg
Internet-Draft                                                  Ericsson
Updates: 5763,7315 (if approved)                              R. Shpount
Intended status: Standards Track                             TurboBridge
Expires: June 10, 2016                                  December 8, 2015

             Using the SDP Offer/Answer Mechanism for DTLS
                   draft-ietf-mmusic-dtls-sdp-03.txt

Abstract

   This draft defines the SDP offer/answer procedures for negotiating
   and establishing a DTLS association.  The draft also defines the
   criteria for when a new DTLS association must be established.

   This draft defines a new SDP media-level attribute, 'dtls-
   connection'.

Status of This Memo

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

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   This Internet-Draft will expire on June 10, 2016.

Copyright Notice

   Copyright (c) 2015 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
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Holmberg & Shpount        Expires June 10, 2016                 [Page 1]
Internet-DraftUsing the SDP Offer/Answer Mechanism for DTLSDecember 2015

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Abbreviations . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Establishing a new DTLS Association . . . . . . . . . . . . .   3
     4.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   3
     4.2.  Change of Local Transport Parameters  . . . . . . . . . .   4
     4.3.  Change of ICE ufrag value . . . . . . . . . . . . . . . .   4
     4.4.  Multiple SDP fingerprint attributes . . . . . . . . . . .   4
   5.  SDP dtls-connection Attribute . . . . . . . . . . . . . . . .   4
     5.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   4
     5.2.  ABNF  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
   6.  SDP Offer/Answer Procedures . . . . . . . . . . . . . . . . .   5
     6.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   5
     6.2.  Generating the Initial SDP Offer  . . . . . . . . . . . .   6
     6.3.  Generating the Answer . . . . . . . . . . . . . . . . . .   6
     6.4.  Offerer Processing of the SDP Answer  . . . . . . . . . .   7
     6.5.  Modifying the Session . . . . . . . . . . . . . . . . . .   7
   7.  ICE Considerations  . . . . . . . . . . . . . . . . . . . . .   8
   8.  Transport Protocol Considerations . . . . . . . . . . . . . .   8
     8.1.  Transport Re-Usage  . . . . . . . . . . . . . . . . . . .   8
   9.  SIP Considerations  . . . . . . . . . . . . . . . . . . . . .   8
   10. RFC Updates . . . . . . . . . . . . . . . . . . . . . . . . .   9
     10.1.  General  . . . . . . . . . . . . . . . . . . . . . . . .   9
     10.2.  Update to RFC 5763 . . . . . . . . . . . . . . . . . . .   9
     10.3.  Update to RFC 7345 . . . . . . . . . . . . . . . . . . .  14
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  17
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  17
     12.1.  Registration of New SDP Attribute  . . . . . . . . . . .  17
   13. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  18
   14. Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .  18
   15. Normative References  . . . . . . . . . . . . . . . . . . . .  19
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   [RFC5763] defines SDP Offer/Answer procedures for SRTP-DTLS.  This
   draft defines the SDP Offer/Answer [RFC3264] procedures for
   negotiation DTLS in general, based on the procedures in [RFC5763].
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