RTCSessionDescription: sdp 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.sdp is a read-only string containing the SDP which describes the session.

Value

The value is a string containing an SDP message like this one:

v=0
o=alice 2890844526 2890844526 IN IP4 host.anywhere.com
s=
c=IN IP4 host.anywhere.com
t=0 0
m=audio 49170 RTP/AVP 0
a=rtpmap:0 PCMU/8000
m=video 51372 RTP/AVP 31
a=rtpmap:31 H261/90000
m=video 53000 RTP/AVP 32
a=rtpmap:32 MPV/90000

Example

js
// The remote description has been set previously on pc, an RTCPeerConnection

alert(pc.remoteDescription.sdp);

Specifications

Specification
WebRTC: Real-Time Communication in Browsers
# dom-rtcsessiondescription-sdp

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
sdp
Chrome – Full support
Chrome 23 (Release date: 2012-11-06)
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

  • WebRTC
  • The standard for using SDP in an offer/answer protocol RFC 3264.