NLNet foundation funds AG Projects initiative for the development of the first Open Source MSRP suite. Message Session Relay Protocol (MSRP) is a protocol for transmitting a series of related Instant Messages in the context of a session, which may be negotiated using the Session Initiation Protocol (SIP).
A series of related instant messages between two or more parties can be viewed as part of a "message session", that is, a conversational exchange of messages with a definite beginning and end. This is in contrast to individual messages each sent independently. Messaging schemes that track only individual messages can be described as "page-mode" messaging, whereas messaging that is part of a "session" with a definite start and end is called "session-mode" messaging.
Page-mode messaging is enabled in SIP via the SIP MESSAGE method, as defined in RFC 3428. Session-mode messaging has a number of benefits over page-mode messaging, however, such as explicit rendezvous, tighter integration with other media-types, direct client-to-client operation, and brokered privacy and security.
Message Session Relay Protocol (MSRP) is 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 (SIP).
MSRP Sessions are defined in RFC 4975.
This project shall implement in Python language an Open Source MSRP suite including a relay, a multi-party chat server and a stand-alone client.
This project is funded by NLNet foundation. For more information and initiatives funded by NLNet foundation see: