Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Presence
draft-ietf-stox-7248bis-07

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Last updated 2016-03-20
Replaces draft-saintandre-stox-7248bis
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Network Working Group                                     P. Saint-Andre
Internet-Draft                                                  Filament
Obsoletes: 7248 (if approved)                             March 20, 2016
Intended status: Standards Track
Expires: September 21, 2016

   Interworking between the Session Initiation Protocol (SIP) and the
      Extensible Messaging and Presence Protocol (XMPP): Presence
                       draft-ietf-stox-7248bis-07

Abstract

   This document defines a bidirectional protocol mapping for the
   exchange of presence information between the Session Initiation
   Protocol (SIP) and the Extensible Messaging and Presence Protocol
   (XMPP).  This document obsoletes RFC 7248.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 21, 2016.

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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Internet-Draft       SIP-XMPP Interworking: Presence          March 2016

   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
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Intended Audience . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Architectural Assumptions . . . . . . . . . . . . . . . . . .   4
   5.  Subscriptions to Presence Information . . . . . . . . . . . .   5
     5.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  XMPP to SIP . . . . . . . . . . . . . . . . . . . . . . .   6
       5.2.1.  Establishing a Presence Subscription  . . . . . . . .   6
       5.2.2.  Refreshing a Presence Subscription  . . . . . . . . .  10
       5.2.3.  Cancelling a Presence Subscription  . . . . . . . . .  10
     5.3.  SIP to XMPP . . . . . . . . . . . . . . . . . . . . . . .  13
       5.3.1.  Establishing a Presence Subscription  . . . . . . . .  13
       5.3.2.  Refreshing a Presence Subscription  . . . . . . . . .  16
       5.3.3.  Cancelling a Presence Subscription  . . . . . . . . .  18
   6.  Notifications of Presence Information . . . . . . . . . . . .  19
     6.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .  19
     6.2.  XMPP to SIP . . . . . . . . . . . . . . . . . . . . . . .  20
     6.3.  SIP to XMPP . . . . . . . . . . . . . . . . . . . . . . .  24
   7.  Polling for Presence Information  . . . . . . . . . . . . . .  26
     7.1.  XMPP to SIP . . . . . . . . . . . . . . . . . . . . . . .  26
     7.2.  SIP to XMPP . . . . . . . . . . . . . . . . . . . . . . .  27
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  28
   9.  Privacy and Security Considerations . . . . . . . . . . . . .  28
     9.1.  Amplification Attacks . . . . . . . . . . . . . . . . . .  28
     9.2.  Presence Leaks  . . . . . . . . . . . . . . . . . . . . .  29
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  29
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  29
     10.2.  Informative References . . . . . . . . . . . . . . . . .  30
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  30
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  31

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1.  Introduction

   In order to help ensure interworking between presence systems that
   conform to the instant message / presence requirements [RFC2779], it
   is important to clearly define protocol mappings between such
   systems.  Within the IETF, work has proceeded on two presence
   technologies:

   o  Various extensions to the Session Initiation Protocol ([RFC3261])
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