WebRTC Data Channel Establishment Protocol
draft-ietf-rtcweb-data-protocol-09

Document Type Active Internet-Draft (rtcweb WG)
Last updated 2015-10-14 (latest revision 2015-01-04)
Replaces draft-jesup-rtcweb-data-protocol
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication May 2014
Document shepherd Ted Hardie
Shepherd write-up Show (last changed 2014-10-09)
IESG IESG state RFC Ed Queue
Consensus Boilerplate Yes
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Responsible AD Alissa Cooper
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IANA IANA review state Version Changed - Review Needed
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RFC Editor RFC Editor state MISSREF
Network Working Group                                           R. Jesup
Internet-Draft                                                   Mozilla
Intended status: Standards Track                               S. Loreto
Expires: July 8, 2015                                           Ericsson
                                                               M. Tuexen
                                        Muenster Univ. of Appl. Sciences
                                                         January 4, 2015

               WebRTC Data Channel Establishment Protocol
                 draft-ietf-rtcweb-data-protocol-09.txt

Abstract

   The WebRTC framework specifies protocol support for direct
   interactive rich communication using audio, video, and data between
   two peers' web-browsers.  This document specifies a simple protocol
   for establishing symmetric Data Channels between the peers.  It uses
   a two way handshake and allows sending of user data without waiting
   for the handshake to complete.

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 July 8, 2015.

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
   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

Jesup, et al.             Expires July 8, 2015                  [Page 1]
Internet-Draft WebRTC Data Channel Establishment Protocol   January 2015

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   2
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
   5.  Message Formats . . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  DATA_CHANNEL_OPEN Message . . . . . . . . . . . . . . . .   4
     5.2.  DATA_CHANNEL_ACK Message  . . . . . . . . . . . . . . . .   7
   6.  Procedures  . . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  SCTP Payload Protocol Identifier  . . . . . . . . . . . .   9
     8.2.  New Standalone Registry for the DCEP  . . . . . . . . . .   9
       8.2.1.  New Message Type Registry . . . . . . . . . . . . . .   9
       8.2.2.  New Channel Type Registry . . . . . . . . . . . . . .  10
   9.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  11
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  11
     10.2.  Informational References . . . . . . . . . . . . . . . .  12
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  12

1.  Introduction

   The Data Channel Establishment Protocol (DCEP) is designed to
   provide, in the WebRTC Data Channel context
   [I-D.ietf-rtcweb-data-channel], a simple in-band method to open
   symmetric Data Channels.  As discussed in
   [I-D.ietf-rtcweb-data-channel], the protocol uses the Stream Control
   Transmission Protocol (SCTP) [RFC4960] encapsulated in the Datagram
   Transport Layer Security (DTLS) as described in
   [I-D.ietf-tsvwg-sctp-dtls-encaps] to benefit from their already
   standardized transport and security features.  DTLS 1.0 is defined in
   [RFC4347] and the present latest version, DTLS 1.2, is defined in
   [RFC6347].

2.  Conventions

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
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