A Session Initiation Protocol (SIP) usage for Trickle ICE
draft-ietf-mmusic-trickle-ice-sip-00

The information below is for an old version of the document
Document Type Active Internet-Draft (mmusic WG)
Last updated 2014-07-25
Stream IETF
Intended RFC status (None)
Formats pdf htmlized bibtex
Reviews
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                            E. Ivov
Internet-Draft                                                     Jitsi
Intended status: Standards Track                              E. Marocco
Expires: January 25, 2015                                 Telecom Italia
                                                             C. Holmberg
                                                                Ericsson
                                                           July 24, 2014

       A Session Initiation Protocol (SIP) usage for Trickle ICE
                  draft-ietf-mmusic-trickle-ice-sip-00

Abstract

   The Interactive Connectivity Establishment (ICE) protocol describes a
   Network Address Translator (NAT) traversal mechanism for UDP-based
   multimedia sessions established with the offer/answer model.  The ICE
   extension for Incremental Provisioning of Candidates (Trickle ICE)
   defines a mechanism that allows ICE agents to shorten session
   establishment delays by making the candidate gathering and
   connectivity checking phases of ICE non-blocking and by executing
   them in parallel.

   This document defines usage semantics for Trickle ICE with the
   Session Initiation Protocol (SIP).

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 January 25, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Ivov, et al.            Expires January 25, 2015                [Page 1]
Internet-Draft             Trickle ICE for SIP                 July 2014

   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
   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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Overview . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Rationale. Why INFO . . . . . . . . . . . . . . . . . . .   4
     3.2.  Discovery issues  . . . . . . . . . . . . . . . . . . . .   5
     3.3.  Relationship with the Offer/Answer Model  . . . . . . . .   6
   4.  Incremental signalling of ICE candidates  . . . . . . . . . .   8
     4.1.  Asserting Offer/Answer delivery and dialog state  . . . .   8
     4.2.  Delivering candidates in INFO messages  . . . . . . . . .  12
   5.  Initial discovery of trickle ICE support  . . . . . . . . . .  14
     5.1.  Provisioning support for trickle ICE  . . . . . . . . . .  14
     5.2.  Trickle ICE discovery with GRUU . . . . . . . . . . . . .  15
     5.3.  Trickle ICE discovery through other protocols . . . . . .  16
     5.4.  Fallback to half trickle  . . . . . . . . . . . . . . . .  16
   6.  Info Package  . . . . . . . . . . . . . . . . . . . . . . . .  18
     6.1.  Overall Description . . . . . . . . . . . . . . . . . . .  18
     6.2.  Applicability . . . . . . . . . . . . . . . . . . . . . .  18
     6.3.  Info Package Name . . . . . . . . . . . . . . . . . . . .  18
     6.4.  Info Package Parameters . . . . . . . . . . . . . . . . .  18
     6.5.  SIP Option-Tags . . . . . . . . . . . . . . . . . . . . .  18
     6.6.  Info Message Body Parts . . . . . . . . . . . . . . . . .  19
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  19
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  19
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  19
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   The vanilla specification of the Interactive Connectivity
   Establishment (vanilla ICE) protocol [RFC5245] describes a mechanism
   for NAT traversal that consists of three main phases: a phase where
Show full document text