RTCPeerConnection: remoteDescription 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 remoteDescription read-only property of the RTCPeerConnection interface returns a RTCSessionDescription describing the session (which includes configuration and media information) for the remote end of the connection. If this hasn't been set yet, this is null.

The returned value typically reflects a remote description which has been received over the signaling server (as either an offer or an answer) and then put into effect by your code calling RTCPeerConnection.setRemoteDescription() in response.

Value

On a more fundamental level, the returned value is the value of RTCPeerConnection.pendingRemoteDescription if that property isn't null; otherwise, the value of RTCPeerConnection.currentRemoteDescription is returned. See Pending and current descriptions in the WebRTC Connectivity page for details on this algorithm and why it's used.

Example

This example looks at the remoteDescription and displays an alert containing the RTCSessionDescription object's type and sdp fields.

js
const pc = new RTCPeerConnection();
// …
const sd = pc.remoteDescription;
if (sd) {
  alert(`Remote session: type='${sd.type}'; sdp description='${sd.sdp}'`);
} else {
  alert("No remote session yet.");
}

Specifications

Specification
WebRTC: Real-Time Communication in Browsers
# dom-peerconnection-remotedescription

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
remoteDescription
Chrome – Full support
Chrome 24 (Release date: 2013-01-10)
footnote Full support
Edge – Full support
Edge 15 (Release date: 2017-04-05)
footnote Full support
Firefox – Full support
Firefox 22 (Release date: 2013-06-25)
footnote Full support
Opera – Full support
Opera 15 (Release date: 2013-07-02)
footnote Full support
Safari – Full support
Safari 11 (Release date: 2017-09-19)
footnote Full support
Chrome Android – Full support
Chrome Android 25 (Release date: 2013-02-27)
footnote Full support
Firefox for Android – Full support
Firefox for Android 24 (Release date: 2013-09-17)
footnote Full support
Opera Android – Full support
Opera Android 14 (Release date: 2013-05-21)
footnote Full support
Safari on iOS – Full support
Safari on iOS 11 (Release date: 2017-09-19)
footnote Full support
Samsung Internet – Full support
Samsung Internet 1.5 (Release date: 2013-09-25)
footnote Full support
WebView Android – Full support
WebView Android 4.4 (Release date: 2013-12-09)
footnote Full support
WebView on iOS – Full support
WebView on iOS 11 (Release date: 2017-09-19)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also