This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The property RTCSessionDescription.type is a read-only value of type RTCSdpType which describes the description's type.
Syntax
var value = sessionDescription.type; sessionDescription.type = value;
Value
The possible values are defined by an enum of type RTCSdpType.
The allowed values are those of an enum of type RTCSdpType:
"offer", the description is the initial proposal in an offer/answer exchange."answer", the description is the definitive choice in an offer/answer exchange."pranswer", the description is a provisional answer and may be changed when the definitive choice will be given.- "
rollback", the description rolls back to offer/answer state to the last stable state.
Example
// The remote description has been set previously on pc, a RTCPeerconnection alert(pc.remoteDescription.type);
Specifications
| Specification | Status | Comment |
|---|---|---|
| WebRTC 1.0: Real-time Communication Between Browsers The definition of 'RTCSessionDescription.type' in that specification. |
Candidate Recommendation | Initial specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
| Desktop | Mobile | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Android webview | Chrome for Android | Edge Mobile | Firefox for Android | Opera for Android | iOS Safari | Samsung Internet | |
| Basic support | Chrome Full support Yes | Edge Full support 15 | Firefox
Full support
Yes
| IE No support No | Opera ? | Safari ? | WebView Android Full support Yes | Chrome Android Full support Yes | Edge Mobile Full support Yes | Firefox Android ? | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.
- Requires a vendor prefix or different name for use.
- Requires a vendor prefix or different name for use.