Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP)
RFC 5122
| Document | Type |
RFC - Proposed Standard
(February 2008; No errata)
Obsoletes RFC 4622
Was draft-saintandre-rfc4622bis (individual in app area)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5122 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Lisa Dusseault | ||
| Send notices to | (None) | ||
Network Working Group P. Saint-Andre
Request for Comments: 5122 XSF
Obsoletes: 4622 February 2008
Category: Standards Track
Internationalized Resource Identifiers (IRIs) and
Uniform Resource Identifiers (URIs) for
the Extensible Messaging and Presence Protocol (XMPP)
Status of This Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Abstract
This document defines the use of Internationalized Resource
Identifiers (IRIs) and Uniform Resource Identifiers (URIs) in
identifying or interacting with entities that can communicate via the
Extensible Messaging and Presence Protocol (XMPP).
This document obsoletes RFC 4622.
Saint-Andre Standards Track [Page 1]
RFC 5122 XMPP IRIs/URIs February 2008
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
2. Use of XMPP IRIs and URIs . . . . . . . . . . . . . . . . . . 4
2.1. Rationale . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2. Form . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3. Authority Component . . . . . . . . . . . . . . . . . . . 6
2.4. Path Component . . . . . . . . . . . . . . . . . . . . . . 7
2.5. Query Component . . . . . . . . . . . . . . . . . . . . . 8
2.6. Fragment Identifier Component . . . . . . . . . . . . . . 9
2.7. Generation of XMPP IRIs/URIs . . . . . . . . . . . . . . . 10
2.8. Processing of XMPP IRIs/URIs . . . . . . . . . . . . . . . 13
2.9. Internationalization . . . . . . . . . . . . . . . . . . . 16
3. IANA Registration of xmpp URI Scheme . . . . . . . . . . . . . 16
3.1. URI Scheme Name . . . . . . . . . . . . . . . . . . . . . 16
3.2. Status . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3. URI Scheme Syntax . . . . . . . . . . . . . . . . . . . . 17
3.4. URI Scheme Semantics . . . . . . . . . . . . . . . . . . . 17
3.5. Encoding Considerations . . . . . . . . . . . . . . . . . 17
3.6. Applications/Protocols That Use This URI Scheme Name . . . 18
3.7. Interoperability Considerations . . . . . . . . . . . . . 18
3.8. Security Considerations . . . . . . . . . . . . . . . . . 18
3.9. Contact . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.10. Author/Change Controller . . . . . . . . . . . . . . . . . 18
3.11. References . . . . . . . . . . . . . . . . . . . . . . . . 18
4. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
5. Security Considerations . . . . . . . . . . . . . . . . . . . 19
5.1. Reliability and Consistency . . . . . . . . . . . . . . . 19
5.2. Malicious Construction . . . . . . . . . . . . . . . . . . 20
5.3. Back-End Transcoding . . . . . . . . . . . . . . . . . . . 20
5.4. Sensitive Information . . . . . . . . . . . . . . . . . . 20
5.5. Semantic Attacks . . . . . . . . . . . . . . . . . . . . . 21
5.6. Spoofing . . . . . . . . . . . . . . . . . . . . . . . . . 21
6. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 21
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.1. Normative References . . . . . . . . . . . . . . . . . . . 21
7.2. Informative References . . . . . . . . . . . . . . . . . . 22
Appendix A. Differences from RFC 4622 . . . . . . . . . . . . . . 25
Appendix B. Copying Conditions . . . . . . . . . . . . . . . . . 25
Saint-Andre Standards Track [Page 2]
RFC 5122 XMPP IRIs/URIs February 2008
1. Introduction
The Extensible Messaging and Presence Protocol (XMPP) is a streaming
XML technology that enables any two entities on a network to exchange
well-defined but extensible XML elements (called "XML stanzas") at a
rate close to real time.
As specified in [XMPP-CORE], entity addresses as used in
communications over an XMPP network must not be prepended with a
Uniform Resource Identifier (URI) scheme (as specified in [URI]).
However, applications external to an XMPP network may need to
identify XMPP entities either as URIs or, in a more modern fashion,
as Internationalized Resource Identifiers (IRIs; see [IRI]).
Examples of such external applications include databases that need to
store XMPP addresses and non-native user agents such as web browsers
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