RTCPeerConnection.localDescription
This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.
The read-only property RTCPeerConnection.localDescription
returns an RTCSessionDescription
describing the session for the local end of the connection. If it has not yet been set, this is null
.
Syntax
var sessionDescription = peerConnection.localDescription;
On a more fundamental level, the returned value is the value of RTCPeerConnection.pendingLocalDescription
if that property isn't null
; otherwise, the value of RTCPeerConnection.currentLocalDescription
is returned. See "Pending and current descriptions" in WebRTC connectivity for details on this algorithm and why it's used.
Example
This example looks at the localDescription
and displays an alert containing the RTCSessionDescription
object's type
and sdp
fields.
var pc = new RTCPeerConnection(); … var sd = pc.localDescription; if (sd) { alert("Local session: type='" + sd.type + "'; sdp description='" + sd.sdp + "'"); } else { alert("No local session yet."); }
Specifications
Specification | Status | Comment |
---|---|---|
WebRTC 1.0: Real-time Communication Between Browser The definition of 'RTCPeerConnection.localDescription' in that specification. |
Working Draft | Initial specification. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) [1] | 22 (22) [1] | No support | (Yes) | ? |
Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|
Basic support | ? | ? | 22.0 (22) | No support | ? | ? |
[1] Though this property is not prefixed, the interface it belongs to is, until Firefox 44.
See also
RTCPeerConnection.setLocalDescription()
,RTCPeerConnection.pendingLocalDescription
,RTCPeerConnection.currentLocalDescription
RTCPeerConnection.setRemoteDescription()
,RTCPeerConnection.remoteDescription
,RTCPeerConnection.pendingRemoteDescription
,RTCPeerConnection.currentRemoteDescription
- WebRTC
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/rtcpeerconnection/localdescription