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.
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Petit-Huguenin, et al. Standards Track [Page 1]RFC 7065 TURN URIs November 2013Table 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 20131. 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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