Trickle ICE: Incremental Provisioning of Candidates for the Interactive Connectivity Establishment (ICE) Protocol
draft-ietf-ice-trickle-21

Document Type Active Internet-Draft (ice WG)
Last updated 2018-05-25 (latest revision 2018-04-15)
Replaces draft-ietf-mmusic-trickle-ice
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Stream WG state Submitted to IESG for Publication (wg milestone: Jan 2017 - Submit Trickle ICE a... )
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Network Working Group                                            E. Ivov
Internet-Draft                                                 Atlassian
Intended status: Standards Track                             E. Rescorla
Expires: October 17, 2018                                     RTFM, Inc.
                                                               J. Uberti
                                                                  Google
                                                          P. Saint-Andre
                                                                 Mozilla
                                                          April 15, 2018

Trickle ICE: Incremental Provisioning of Candidates for the Interactive
               Connectivity Establishment (ICE) Protocol
                       draft-ietf-ice-trickle-21

Abstract

   This document describes "Trickle ICE", an extension to the
   Interactive Connectivity Establishment (ICE) protocol that enables
   ICE agents to begin connectivity checks while they are still
   gathering candidates, by incrementally exchanging candidates over
   time instead of all at once.  This method can considerably accelerate
   the process of establishing a communication session.

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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   This Internet-Draft will expire on October 17, 2018.

Copyright Notice

   Copyright (c) 2018 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

Ivov, et al.            Expires October 17, 2018                [Page 1]
Internet-Draft                 Trickle ICE                    April 2018

   (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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
   3.  Determining Support for Trickle ICE . . . . . . . . . . . . .   6
   4.  Generating the Initial ICE Description  . . . . . . . . . . .   7
   5.  Handling the Initial ICE Description and Generating the
       Initial ICE Response  . . . . . . . . . . . . . . . . . . . .   7
   6.  Handling the Initial ICE Response . . . . . . . . . . . . . .   8
   7.  Forming Check Lists . . . . . . . . . . . . . . . . . . . . .   8
   8.  Performing Connectivity Checks  . . . . . . . . . . . . . . .   8
   9.  Gathering and Conveying Newly Gathered Local Candidates . . .   9
   10. Pairing Newly Gathered Local Candidates . . . . . . . . . . .  10
   11. Receiving Trickled Candidates . . . . . . . . . . . . . . . .  11
   12. Inserting Trickled Candidate Pairs into a Check List  . . . .  12
   13. Generating an End-of-Candidates Indication  . . . . . . . . .  16
   14. Receiving an End-of-Candidates Indication . . . . . . . . . .  17
   15. Subsequent Exchanges and ICE Restarts . . . . . . . . . . . .  18
   16. Half Trickle  . . . . . . . . . . . . . . . . . . . . . . . .  18
   17. Preserving Candidate Order while Trickling  . . . . . . . . .  19
   18. Requirements for Using Protocols  . . . . . . . . . . . . . .  20
   19. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
   20. Security Considerations . . . . . . . . . . . . . . . . . . .  21
   21. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  21
   22. References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     22.1.  Normative References . . . . . . . . . . . . . . . . . .  22
     22.2.  Informative References . . . . . . . . . . . . . . . . .  22
   Appendix A.  Interaction with Regular ICE . . . . . . . . . . . .  23
   Appendix B.  Interaction with ICE Lite  . . . . . . . . . . . . .  25
   Appendix C.  Changes from Earlier Versions  . . . . . . . . . . .  26
     C.1.  Changes from draft-ietf-ice-trickle-20  . . . . . . . . .  26
     C.2.  Changes from draft-ietf-ice-trickle-19  . . . . . . . . .  26
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