Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Presence
draft-ietf-stox-7248bis-12

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Document Type Active Internet-Draft (stox WG)
Last updated 2016-10-06 (latest revision 2016-09-14)
Replaces draft-saintandre-stox-7248bis
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IESG note IDNits complains that there are no security considerations. They exist, but Peter combined privacy and security into one section which appears to confuse the tool.
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Network Working Group                                     P. Saint-Andre
Internet-Draft                                                  Filament
Obsoletes: 7248 (if approved)                         September 14, 2016
Intended status: Standards Track
Expires: March 18, 2017

   Interworking between the Session Initiation Protocol (SIP) and the
      Extensible Messaging and Presence Protocol (XMPP): Presence
                       draft-ietf-stox-7248bis-12

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
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   This Internet-Draft will expire on March 18, 2017.

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Saint-Andre              Expires March 18, 2017                 [Page 1]
Internet-Draft       SIP-XMPP Interworking: Presence      September 2016

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Intended Audience . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Architectural Assumptions . . . . . . . . . . . . . . . . . .   5
   5.  Presence Authorizations . . . . . . . . . . . . . . . . . . .   5
     5.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   5
     5.2.  XMPP to SIP . . . . . . . . . . . . . . . . . . . . . . .   6
       5.2.1.  Requesting a Presence Authorization . . . . . . . . .   6
       5.2.2.  Refreshing a Notification Dialog  . . . . . . . . . .  10
       5.2.3.  Cancelling a Presence Authorization . . . . . . . . .  11
     5.3.  SIP to XMPP . . . . . . . . . . . . . . . . . . . . . . .  14
       5.3.1.  Requesting a Presence Authorization . . . . . . . . .  14
       5.3.2.  Refreshing a Notification Dialog  . . . . . . . . . .  18
       5.3.3.  Cancelling a Presence Authorization . . . . . . . . .  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 . . . . . . . . . . . . . . . . . . . . .  27
   9.  Privacy and Security Considerations . . . . . . . . . . . . .  27
     9.1.  Amplification Attacks . . . . . . . . . . . . . . . . . .  28
     9.2.  Presence Leaks  . . . . . . . . . . . . . . . . . . . . .  28
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  29
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  29
     10.2.  Informative References . . . . . . . . . . . . . . . . .  30
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  30
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  30

1.  Introduction

   Presence is information about the availability of an entity (such as
   network availability or availability for communication).  Presence
   features in both SIP and XMPP involve several aspects:

   o  A long-lived authorization for a user to receive notifications
      about a contact's presence across presence and notification
      sessions; such an authorization is formally requested by the user,
      approved (or not) by the contact, and often associated with a
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