RFC 4976

Relay Extensions for the Message Sessions Relay Protocol (MSRP), September 2007

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Updated by:
RFC 7977, RFC 8553, RFC 8996
C. Jennings
R. Mahy
A. B. Roach
simple (rai)

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DOI:  https://doi.org/10.17487/RFC4976

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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]

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.

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