The Message Session Relay Protocol (MSRP)
RFC 4975
| Document | Type |
RFC - Proposed Standard
(September 2007; Errata)
Updated by RFC 7977
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 4975 (Proposed Standard) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Jon Peterson | ||
| Send notices to | hisham.khartabil@nokia.com, adam@estacado.net | ||
Network Working Group B. Campbell, Ed.
Request for Comments: 4975 Estacado Systems
Category: Standards Track R. Mahy, Ed.
Plantronics
C. Jennings, Ed.
Cisco Systems, Inc.
September 2007
The Message Session Relay Protocol (MSRP)
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 describes the Message Session Relay Protocol, a
protocol for transmitting a series of related instant messages in the
context of a session. Message sessions are treated like any other
media stream when set up via a rendezvous or session creation
protocol such as the Session Initiation Protocol.
Campbell, et al. Standards Track [Page 1]
RFC 4975 MSRP September 2007
Table of Contents
1. Introduction ....................................................4
2. Conventions .....................................................5
3. Applicability of MSRP ...........................................5
4. Protocol Overview ...............................................6
5. Key Concepts ....................................................9
5.1. MSRP Framing and Message Chunking ..........................9
5.2. MSRP Addressing ...........................................10
5.3. MSRP Transaction and Report Model .........................11
5.4. MSRP Connection Model .....................................12
6. MSRP URIs ......................................................14
6.1. MSRP URI Comparison .......................................15
6.2. Resolving MSRP Host Device ................................16
7. Method-Specific Behavior .......................................17
7.1. Constructing Requests .....................................17
7.1.1. Sending SEND Requests ..............................18
7.1.2. Sending REPORT Requests ............................21
7.1.3. Generating Success Reports .........................22
7.1.4. Generating Failure Reports .........................23
7.2. Constructing Responses ....................................24
7.3. Receiving Requests ........................................25
7.3.1. Receiving SEND Requests ............................25
7.3.2. Receiving REPORT Requests ..........................27
8. Using MSRP with SIP and SDP ....................................27
8.1. SDP Connection and Media-Lines ............................28
8.2. URI Negotiations ..........................................29
8.3. Path Attributes with Multiple URIs ........................30
8.4. Updated SDP Offers ........................................31
8.5. Connection Negotiation ....................................31
8.6. Content Type Negotiation ..................................32
8.7. Example SDP Exchange ......................................34
8.8. MSRP User Experience with SIP .............................35
8.9. SDP Direction Attribute and MSRP ..........................35
9. Formal Syntax ..................................................36
10. Response Code Descriptions ....................................38
10.1. 200 ......................................................38
10.2. 400 ......................................................38
10.3. 403 ......................................................38
10.4. 408 ......................................................39
10.5. 413 ......................................................39
10.6. 415 ......................................................39
10.7. 423 ......................................................39
10.8. 481 ......................................................39
10.9. 501 ......................................................39
10.10. 506 .....................................................40
Campbell, et al. Standards Track [Page 2]
RFC 4975 MSRP September 2007
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