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RTCSessionDescription: type property - Web APIs | MDN
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RTCSessionDescription: type property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2017.
The property RTCSessionDescription.type is a read-only
string value which describes the description's type.
Value
The possible values are:
"answer"-
The SDP contained in the
sdpproperty is the definitive choice in the exchange. In other words, this session description describes the agreed-upon configuration, and is being sent to finalize negotiation. "offer"-
The session description object describes the initial proposal in an offer/answer exchange. The session negotiation process begins with an offer being sent from the caller to the callee.
"pranswer"-
The session description object describes a provisional answer; that is, a response to a previous offer that is not the final answer. It is usually employed by legacy hardware.
"rollback"-
This special type with an empty session description is used to roll back to the previous stable state.
Example
js
// The remote description has been set previously on pc, a RTCPeerConnection
alert(pc.remoteDescription.type);
Specifications
| Specification |
|---|
| WebRTC: Real-Time Communication in Browsers # dom-rtcsessiondescription-type |
Browser compatibility
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