Trickle ICE: Incremental Provisioning of Candidates for the Interactive Connectivity Establishment (ICE) Protocol
draft-ietf-ice-trickle-16

The information below is for an old version of the document
Document Type Active Internet-Draft (ice WG)
Last updated 2018-02-22 (latest revision 2018-02-02)
Replaces draft-ietf-mmusic-trickle-ice
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Nils Ohlmeier
Shepherd write-up Show (last changed 2018-01-24)
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Send notices to Nils Ohlmeier <nohlmeier@mozilla.com>
IANA IANA review state IANA - Not OK
Network Working Group                                            E. Ivov
Internet-Draft                                                 Atlassian
Intended status: Standards Track                             E. Rescorla
Expires: August 6, 2018                                       RTFM, Inc.
                                                               J. Uberti
                                                                  Google
                                                          P. Saint-Andre
                                                                 Mozilla
                                                        February 2, 2018

Trickle ICE: Incremental Provisioning of Candidates for the Interactive
               Connectivity Establishment (ICE) Protocol
                       draft-ietf-ice-trickle-16

Abstract

   This document describes "Trickle ICE", an extension to the
   Interactive Connectivity Establishment (ICE) protocol that enables
   ICE agents to send and receive candidates incrementally rather than
   exchanging complete lists.  With such incremental provisioning, ICE
   agents can begin connectivity checks while they are still gathering
   candidates and considerably shorten the time necessary for ICE
   processing 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
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
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   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 August 6, 2018.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Ivov, et al.             Expires August 6, 2018                 [Page 1]
Internet-Draft                 Trickle ICE                 February 2018

   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
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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.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Determining Support for Trickle ICE . . . . . . . . . . . . .   5
   4.  Conveying the Initial ICE Description . . . . . . . . . . . .   6
   5.  Responder Procedures  . . . . . . . . . . . . . . . . . . . .   7
     5.1.  Conveying the Initial Response  . . . . . . . . . . . . .   7
     5.2.  Forming Check Lists and Beginning Connectivity
           Checks  . . . . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Initiator Procedures  . . . . . . . . . . . . . . . . . . . .   8
   7.  Performing Connectivity Checks  . . . . . . . . . . . . . . .   8
     7.1.  Scheduling Checks . . . . . . . . . . . . . . . . . . . .   9
     7.2.  Check List and Timer State Updates  . . . . . . . . . . .   9
   8.  Discovering and Conveying Additional Local Candidates . . . .  10
     8.1.  Pairing Newly Learned Candidates and Updating
           Check Lists . . . . . . . . . . . . . . . . . . . . . . .  11
       8.1.1.  Inserting a New Pair in a Check List  . . . . . . . .  12
     8.2.  Announcing End of Candidates  . . . . . . . . . . . . . .  15
   9.  Receiving Additional Remote Candidates  . . . . . . . . . . .  17
   10. Receiving an End-Of-Candidates Indication . . . . . . . . . .  17
   11. Trickle ICE and Peer Reflexive Candidates . . . . . . . . . .  17
   12. Concluding ICE Processing . . . . . . . . . . . . . . . . . .  18
   13. Subsequent Exchanges  . . . . . . . . . . . . . . . . . . . .  18
   14. Unilateral Use of Trickle ICE (Half Trickle)  . . . . . . . .  18
   15. Requirements for Signaling Protocols  . . . . . . . . . . . .  19
   16. Preserving Candidate Order while Trickling  . . . . . . . . .  20
   17. Example Flow  . . . . . . . . . . . . . . . . . . . . . . . .  21
   18. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
   19. Security Considerations . . . . . . . . . . . . . . . . . . .  22
   20. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  22
   21. References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
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