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.defaultIceServers returns an array of objects based on the RTCIceServer dictionary, which indicates what—if any—ICE servers the browser will use by default if none are provided to the RTCPeerConnection in its RTCConfiguration. However, browsers are not required to provide any default ICE servers at all.


 var defaultIceServers = RTCPeerConnection.defaultIceServers;


An array of ICE servers, specified as objects based on RTCIceServer,  which the browser will use if none are specified in the configuration of the RTCPeerConnection. If there are no defaults provided by the browser, the returned array is empty; this property's value is never null.


var pc = new RTCPeerConnection();
var iceServers = pc.defaultIceServers;
if (iceServers.length === 0) {
  // Deal with the lack of default ICE servers, possibly by using our own defaults


Specification Status Comment
WebRTC 1.0: Real-time Communication Between Browsers
The definition of 'RTCPeerConnection.defaultIceServers' in that specification.
Working Draft Initial specification.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support No support No support No support No support
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support No support No support No support No support No support

See also

Document Tags and Contributors

 Contributors to this page: jpmedley, Sheppy
 Last updated by: jpmedley,