Session Announcement Protocol

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Session Announcement Protocol (SAP) is a protocol for broadcasting multicast session information.

A SAP listening application can listen to the well-known SAP multicast address and construct a guide of all advertised multicast sessions. SAP was published by the IETF as [RFC 2974].

SAP typically uses Session Description Protocol (SDP) as the format of the session descriptions, and the multicast sessions typically use Real-time Transport Protocol (RTP).

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