Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): One-to-One Text Chat
draft-ietf-stox-chat-00

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Document Type Active Internet-Draft (stox WG)
Last updated 2013-07-01
Replaces draft-saintandre-sip-xmpp-chat
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Network Working Group                                     P. Saint-Andre
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Standards Track                               S. Loreto
Expires: January 2, 2014                                       E. Gavita
                                                              N. Hossain
                                                                Ericsson
                                                            July 1, 2013

   Interworking between the Session Initiation Protocol (SIP) and the
Extensible Messaging and Presence Protocol (XMPP): One-to-One Text Chat
                        draft-ietf-stox-chat-00

Abstract

   This document defines a bidirectional protocol mapping for the
   exchange of instant messages in the context of a one-to-one chat
   session between a user of the Session Initiation Protocol (SIP) and a
   user of the Extensible Messaging and Presence Protocol (XMPP).
   Specifically for SIP text chat, this document specifies a mapping to
   the Message Session Relay Protocol (MSRP).

Status of this Memo

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   This Internet-Draft will expire on January 2, 2014.

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   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   publication of this document.  Please review these documents

Saint-Andre, et al.      Expires January 2, 2014                [Page 1]
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   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  XMPP to MSRP . . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  MSRP to XMPP . . . . . . . . . . . . . . . . . . . . . . . . .  7
   5.  Security Considerations  . . . . . . . . . . . . . . . . . . . 10
   6.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 11
   7.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     7.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     7.2.  Informative References . . . . . . . . . . . . . . . . . . 12
   Appendix A.  Acknowledgements  . . . . . . . . . . . . . . . . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

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1.  Introduction

   Both the Session Initiation Protocol [RFC3261] and the Extensible
   Messaging and Presence Protocol [RFC6120] can be used for the purpose
   of one-to-one text chat over the Internet.  To ensure interworking
   between these technologies, it is important to define bidirectional
   protocol mappings.

   The architectural assumptions underlying such protocol mappings are
   provided in [I-D.ietf-stox-core], including mapping of addresses and
   error conditions.  This document specifies mappings for one-to-one
   text chat sessions (sometimes called "session-mode" messaging); in
   particular, this document specifies mappings between XMPP messages of
   type "chat" and the Message Session Relay Protocol [RFC4975].
   Mappings for single instant messages and groupchat are provided in
   separate documents.

   The approach taken here is to directly map syntax and semantics from
   one protocol to another.  The mapping described herein depends on the
   protocols defined in the following specifications:

   o  XMPP chat sessions using message stanzas of type "chat" are
      specified in [RFC6121].
   o  SIP-based chat sessions using the SIP INVITE and SEND request
      types are specified in [RFC4975].

   In SIMPLE, a chat session is formally negotiated just as any other
   session type is using SIP.  By contrast, a one-to-one chat "session"
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