An Alternative Connection Model for the Message Session Relay Protocol (MSRP)

Document Type Replaced Internet-Draft (individual)
Last updated 2009-03-10 (latest revision 2008-10-17)
Replaced by draft-ietf-simple-msrp-acm
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an alternative connection model for MSRP UAs. The model differs from the standard MSRP model, as defined in RFC4975 and RFC4976 in the following ways: it uses COMEDIA for TCP connection establishment, and it allows the usage of SDP in a more conventional way for conveying endpoint address information. Because of this, the model also allows for the usage of generic mainstream mechanisms for NAT traversal, instead of using MSRP relays.


Staffan Blau (
Christer Holmberg (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)