Multiple-Recipient MESSAGE Requests in the Session Initiation Protocol (SIP)
RFC 5365
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RFC - Proposed Standard
(October 2008; No errata)
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2015-10-14
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draft-ietf-sipping-uri-list-message
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IETF
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plain text
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bibtex
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IESG state |
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RFC 5365 (Proposed Standard)
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Consensus Boilerplate |
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Unknown
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Responsible AD |
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Cullen Jennings
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Network Working Group M. Garcia-Martin
Request for Comments: 5365 G. Camarillo
Category: Standards Track Ericsson
October 2008
Multiple-Recipient MESSAGE Requests in
the Session Initiation Protocol (SIP)
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 specifies a mechanism that allows a SIP User Agent
Client (UAC) to send a SIP MESSAGE request to a set of destinations,
by using a SIP URI-list (Uniform Resource Identifier list) service.
The UAC sends a SIP MESSAGE request that includes the payload along
with the URI list to the MESSAGE URI-list service, which sends a
MESSAGE request including the payload to each of the URIs included in
the list.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. URI-List Document . . . . . . . . . . . . . . . . . . . . . . 5
5. Option-Tag . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6. Procedures at the User Agent Client . . . . . . . . . . . . . 6
7. Procedures at the MESSAGE URI-List Service . . . . . . . . . . 7
7.1. Determining the Intended Recipient . . . . . . . . . . . . 8
7.2. Creating an Outgoing MESSAGE Request . . . . . . . . . . . 8
7.3. Composing Bodies in the Outgoing MESSAGE Request . . . . . 10
8. Procedures at the UAS . . . . . . . . . . . . . . . . . . . . 11
9. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
10. Security Considerations . . . . . . . . . . . . . . . . . . . 15
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
12. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 15
13. References . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.1. Normative References . . . . . . . . . . . . . . . . . . . 16
13.2. Informative References . . . . . . . . . . . . . . . . . . 17
Garcia-Martin & Camarillo Standards Track [Page 1]
RFC 5365 SIP Multiple-Recipient MESSAGE Requests October 2008
1. Introduction
RFC 3261 (SIP) [RFC3261] is extended by RFC 3248 [RFC3428] to carry
instant messages in MESSAGE requests. SIP-based messaging, as
described in RFC 3428 [RFC3428], does not provide a mechanism to send
the same request to multiple recipients or replying to all recipients
of a SIP MESSAGE request. This memo addresses these functions.
A first requirement can be expressed as:
REQ-1: It must be possible for a user to send an instant message
request to an ad hoc group, where the identities of the recipients
are carried in the message itself.
One possibility to fulfill the above requirement is to establish a
session of instant messages with an instant messaging conference
server, and exchange the messages, for example, using MSRP (Message
Session Relay Protocol) [RFC4975]. While this option seems to be
reasonable in many cases, in other situations the sending user just
wants to send a small pager-mode instant message to an ad hoc group
without the burden of setting up a session. This document focuses on
sending a pager-mode instant message to a number of intended
recipients.
To meet the requirement with a pager-mode instant message, we allow
SIP MESSAGE requests carry recipient-list bodies, i.e., URI lists in
body parts whose Content-Disposition (RFC 2183) [RFC2183] is
'recipient-list', as specified in RFC 5363 [RFC5363]. A SIP MESSAGE
URI-list service, which is a specialized application service,
receives the request and sends a MESSAGE request including the
received payload to each of the URIs in the list. Each of these
MESSAGE requests contains a copy of the body included in the original
MESSAGE request.
A second requirement addresses the "Reply-To-All" functionality:
REQ-2: It MUST be possible for the recipient of a group instant
message to send a message to all other participants that received
the same group instant message (i.e., Reply-To-All).
To meet this requirement, we provide a mechanism whereby the MESSAGE
URI-list service also includes a URI list in body parts whose
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