libMSRP is an open source MSRP (Message Session Relay Protocol) library written in C, based on the specifications in the latest internet drafts:
- endpoint-to-endpoint (TCP only, no TLS yet) MSRP sessions are supported (draft-ietf-simple-message-sessions-19);
- MSRP conference rooms are supported (draft-boulton-xcon-msrp-conferencing-04);
- relaying is not supported yet (draft-ietf-simple-msrp-relays-10), but soon will.
We wrote this library in order to provide MSRP chat support in CONFIANCE. The library is used in CONFIANCE by exploiting the MSRP conference room functionality on the server side, while exploiting basic MSRP endpoint connections on the client side.
The library can be downloaded on the Sourceforge project age:

