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Traversal Using Relays around NAT (TURN) Uniform Resource Identifiers
RFC 7065

Document type: RFC - Proposed Standard (November 2013)
Was draft-petithuguenin-behave-turn-uris (individual in rai area)
Document stream: IETF
Last updated: 2013-11-22
Other versions: plain text, pdf, html

IETF State: (None)
Consensus: Yes
Document shepherd: Dan Wing
Shepherd Write-Up: Last changed 2013-09-16

IESG State: RFC 7065 (Proposed Standard)
IANA Action State: RFC-Ed-Ack
Responsible AD: Gonzalo Camarillo
Send notices to: petithug@acm.org, snandaku@cisco.com, gsalguei@cisco.com, paulej@packetizer.com, draft-petithuguenin-behave-turn-uris@tools.ietf.org

Internet Engineering Task Force (IETF)                 M. Petit-Huguenin
Request for Comments: 7065                            Impedance Mismatch
Category: Standards Track                                  S. Nandakumar
ISSN: 2070-1721                                             G. Salgueiro
                                                                P. Jones
                                                           Cisco Systems
                                                           November 2013

 Traversal Using Relays around NAT (TURN) Uniform Resource Identifiers

Abstract

   This document specifies the syntax of Uniform Resource Identifier
   (URI) schemes for the Traversal Using Relays around NAT (TURN)
   protocol.  It defines two URI schemes to provision the TURN
   Resolution Mechanism (RFC 5928).

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7065.

Copyright Notice

   Copyright (c) 2013 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
   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.

Petit-Huguenin, et al.       Standards Track                    [Page 1]
RFC 7065                        TURN URIs                  November 2013

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Definitions of the "turn" and "turns" URI . . . . . . . . . .   4
     3.1.  URI Scheme Syntax . . . . . . . . . . . . . . . . . . . .   4
     3.2.  URI Scheme Semantics  . . . . . . . . . . . . . . . . . .   4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   5
     5.1.  "turn" URI Registration . . . . . . . . . . . . . . . . .   5
     5.2.  "turns" URI Registration  . . . . . . . . . . . . . . . .   6
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   6
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   7
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   7
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   7
   Appendix A.  Examples . . . . . . . . . . . . . . . . . . . . . .   8
   Appendix B.  Design Notes . . . . . . . . . . . . . . . . . . . .   8

Petit-Huguenin, et al.       Standards Track                    [Page 2]
RFC 7065                        TURN URIs                  November 2013

1.  Introduction

   This document specifies the syntax and semantics of the Uniform
   Resource Identifier (URI) scheme for the Traversal Using Relays
   around NAT (TURN) protocol.

   The TURN protocol is a specification allowing hosts behind NAT to
   control the operation of a relay server.  The relay server allows
   hosts to exchange packets with its peers.  The peers themselves may
   also be behind NATs.  RFC 5766 [RFC5766] defines the specifics of the
   TURN protocol.

   The "turn" and "turns" URI schemes are used to designate a TURN
   server (also known as a relay) on Internet hosts accessible using the
   TURN protocol.  With the advent of standards such as WebRTC [WEBRTC],
   we anticipate a plethora of endpoints and web applications to be able
   to identify and communicate with such a TURN server to carry out the
   TURN protocol.  This implies that endpoints and/or applications must
   be provisioned with the appropriate configuration to identify the
   TURN server.  Having an inconsistent syntax adds ambiguity and can
   result in non-interoperable solutions and implementation limitations.
   The "turn" and "turns" URI schemes help alleviate most of these

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