The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)
draft-ietf-sipcore-sip-websocket-06

The information below is for an old version of the document
Document Type Active Internet-Draft (sipcore WG)
Last updated 2012-11-27 (latest revision 2012-11-06)
Replaces draft-ibc-sipcore-sip-websocket
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Document Apr 2013
Document shepherd None
IESG IESG state AD Evaluation::Revised I-D Needed
Telechat date
Responsible AD Robert Sparks
IESG note Paul Kyzivat (pkyzivat@alum.mit.edu) is the document shepherd.
Send notices to sipcore-chairs@tools.ietf.org, draft-ietf-sipcore-sip-websocket@tools.ietf.org
SIPCORE Working Group                                    I. Baz Castillo
Internet-Draft                                        J. Millan Villegas
Updates: 3261 (if approved)                                    Versatica
Intended status: Standards Track                              V. Pascual
Expires: May 10, 2013                                        Acme Packet
                                                        November 6, 2012

    The WebSocket Protocol as a Transport for the Session Initiation
                             Protocol (SIP)
                  draft-ietf-sipcore-sip-websocket-06

Abstract

   The WebSocket protocol enables two-way realtime communication between
   clients and servers.  This document specifies a new WebSocket sub-
   protocol as a reliable transport mechanism between SIP (Session
   Initiation Protocol) entities to enable usage of SIP in new
   scenarios.  This document normatively updates RFC 3261.

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
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   Internet-Drafts are draft documents valid for a maximum of six months
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   This Internet-Draft will expire on May 10, 2013.

Copyright Notice

   Copyright (c) 2012 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
   to this document.  Code Components extracted from this document must

Baz Castillo, et al.      Expires May 10, 2013                  [Page 1]
Internet-Draft      WebSocket as a Transport for SIP       November 2012

   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  . . . . . . . . . . . . . . . . . . . . . . . . .  3
     2.1.  Definitions  . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  The WebSocket Protocol . . . . . . . . . . . . . . . . . . . .  4
   4.  The WebSocket SIP Sub-Protocol . . . . . . . . . . . . . . . .  4
     4.1.  Handshake  . . . . . . . . . . . . . . . . . . . . . . . .  5
     4.2.  SIP encoding . . . . . . . . . . . . . . . . . . . . . . .  5
   5.  SIP WebSocket Transport  . . . . . . . . . . . . . . . . . . .  5
     5.1.  General  . . . . . . . . . . . . . . . . . . . . . . . . .  6
     5.2.  Updates to RFC 3261  . . . . . . . . . . . . . . . . . . .  6
       5.2.1.  Via Transport Parameter  . . . . . . . . . . . . . . .  6
       5.2.2.  SIP URI Transport Parameter  . . . . . . . . . . . . .  6
       5.2.3.  Via received parameter . . . . . . . . . . . . . . . .  7
       5.2.4.  SIP transport implementation requirements  . . . . . .  7
     5.3.  Locating a SIP Server  . . . . . . . . . . . . . . . . . .  8
   6.  Connection Keep Alive  . . . . . . . . . . . . . . . . . . . .  8
   7.  Authentication . . . . . . . . . . . . . . . . . . . . . . . .  9
   8.  Examples . . . . . . . . . . . . . . . . . . . . . . . . . . .  9
     8.1.  Registration . . . . . . . . . . . . . . . . . . . . . . .  9
     8.2.  INVITE dialog through a proxy  . . . . . . . . . . . . . . 11
   9.  Security Considerations  . . . . . . . . . . . . . . . . . . . 15
     9.1.  Secure WebSocket Connection  . . . . . . . . . . . . . . . 15
     9.2.  Usage of SIPS Scheme . . . . . . . . . . . . . . . . . . . 16
   10. IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 16
     10.1. Registration of the WebSocket SIP Sub-Protocol . . . . . . 16
     10.2. Registration of new NAPTR service field values . . . . . . 16
     10.3. SIP/SIPS URI Parameters Sub-Registry . . . . . . . . . . . 16
     10.4. Header Fields Sub-Registry . . . . . . . . . . . . . . . . 17
     10.5. Header Field Parameters and Parameter Values
           Sub-Registry . . . . . . . . . . . . . . . . . . . . . . . 17
   11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 17
   12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 17
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