3.1 Signaling Model

3.1 Signaling Model

JSEP does not specify a particular signaling model or state machine, other than the generic need to exchange session descriptions in the fashion described by [RFC3264] (offer/answer) in order for both sides of the session to know how to conduct the session. JSEP provides mechanisms to create offers and answers, as well as to apply them to a session. However, the JSEP implementation is totally decoupled from the actual mechanism by which these offers and answers are communicated to the remote side, including addressing, retransmission, forking, and glare handling. These issues are left entirely up to the application; the application has complete control over which offers and answers get handed to the implementation, and when.

      +-----------+                               +-----------+
      |  Web App  |<--- App-Specific Signaling -->|  Web App  |
      +-----------+                               +-----------+
            ^                                            ^
            |  SDP                                       |  SDP
            V                                            V
      +-----------+                                +-----------+
      |   JSEP    |<----------- Media ------------>|   JSEP    |
      |   Impl.   |                                |   Impl.   |
      +-----------+                                +-----------+

                    Figure 1: JSEP Signaling Model