Relay Extensions for the Message Sessions Relay Protocol
RFC 4976, “Relay Extensions for the Message Sessions Relay Protocol”, is a Proposed Standard document published in September 2007 by C. Jennings, R. Mahy, A. B. Roach. It has since been updated by RFC 7977, RFC 8553, RFC 8996. The canonical text is published by the RFC Editor.
Abstract
Two separate models for conveying instant messages have been defined. Page-mode messages stand alone and are not part of a Session Initiation Protocol (SIP) session, whereas session-mode messages are set up as part of a session using SIP. The Message Session Relay Protocol (MSRP) is a protocol for near real-time, peer-to-peer exchanges of binary content without intermediaries, which is designed to be signaled using a separate rendezvous protocol such as SIP. This document introduces the notion of message relay intermediaries to MSRP and describes the extensions necessary to use them. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 4976 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 4975 The Message Session Relay Protocol
- RFC 4977 Problem Statement: Dual Stack Mobility
- RFC 4974 Generalized MPLS RSVP-TE Signaling Extensions in Support of Calls
- RFC 4978 The IMAP COMPRESS Extension
- RFC 4973 OSPF-xTE: Experimental Extension to OSPF for Traffic Engineering
- RFC 4979 IANA Registration for Enumservice 'XMPP'
- RFC 4972 Routing Extensions for Discovery of Multiprotocol Label Switch Router Traffic Engineering Mesh Membership
- RFC 4980 Analysis of Multihoming in Network Mobility Support