📝SDP Offer/Answer model

Is the model of using SDP defined in RFC 3264.

Two roles are: Offerer and Answerer.

  1. Offerer sends an SDP offer (what it want to receive)
  2. Answerer replies with SDP Answer (what it will send)

To reject a media stream, answerer sets its port to 0.

SDP Offer/Answer model is used by SIP and WebRTC.

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