RTCSessionDescription: RTCSessionDescription() constructor

Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

The RTCSessionDescription() constructor creates a new RTCSessionDescription with its properties initialized as described in the specified object.

Note: This constructor has been deprecated because RTCPeerConnection.setLocalDescription() and other methods which take SDP as input now directly accept an object containing the type and sdp properties, so you don't have to instantiate an RTCSessionDescription yourself.

Syntax

new RTCSessionDescription(options)

Values

options

An object providing the default values for the session description. It should contain the following properties:

type: Required. A string which is used to set the type property of the new RTCSessionDescription object. Must be one of the valid RTCSessionDescription.type values.
sdp Optional: A string containing a SDP message describing the session. This value is an empty string ("") by default and may not be null.

Example

This example uses the constructor to convert an SDP offer into an RTCSessionDescription object.

Note: This is no longer necessary, however; RTCPeerConnection.setLocalDescription() and other methods which take SDP as input now directly accept plain objects, so you don't have to instantiate an RTCSessionDescription yourself.

navigator.getUserMedia({ video: true }, (stream) => {
  pc.onaddstream({ stream });
  // Adding a local stream won't trigger the onaddstream callback
  pc.addStream(stream);

  pc.createOffer((offer) => {
    pc.setLocalDescription(
      new RTCSessionDescription(offer),
      () => {
        // send the offer to a server to be forwarded to the friend you're calling.
      },
      error,
    );
  }, error);
});