RTCIceTransport: selectedcandidatepairchange event
A selectedcandidatepairchange
event is sent to an RTCIceTransport
when the ICE agent selects a new pair of candidates that describe the endpoints of a viable connection.
The pair of candidates is in turn described by an RTCIceCandidatePair
object which contains one RTCIceCandidate
representing the local end of the connection, and another representing the remote end of the connection.
Together, the candidates can be used to establish a connection to be used by the RTCIceTransport
, and, by extension, by an RTCPeerConnection
.
This event is not cancelable and does not bubble.
Syntax
Use the event name in methods like addEventListener()
, or set an event handler property.
addEventListener('selectedcandidatepairchange', event => { });
onselectedcandidatepairchange = event => { };
Event type
A generic Event
.
Examples
This example creates an event handler for selectedcandidatepairchange
that updates a display providing the user information about the progress of the ICE negotiation for an RTCPeerConnection
called pc
.
let iceTransport = pc.getSenders[0].transport.iceTransport;
let localProtoElem = document.getElementById("local-protocol");
let remoteProtoElem = document.getElementById("remote-protocol");
iceTransport.addEventListener("selectedcandidatepairchange", ev => {
let pair = iceTransport.getSelectedCandidatePair();
localProtoElem.innerText = pair.local.protocol.toUpperCase();
remoteProtoElem.innerText = pair.remote.protocol.toUpperCase();
}, false)
This can also be done by setting the onselectedcandidatepairchange
event handler property directly.
let iceTransport = pc.getSenders[0].transport.iceTransport;
let localProtoElem = document.getElementById("local-protocol");
let remoteProtoElem = document.getElementById("remote-protocol");
iceTransport.onselectedcandidatepairchange = ev => {
let pair = iceTransport.getSelectedCandidatePair();
localProtoElem.innerText = pair.local.protocol.toUpperCase();
remoteProtoElem.innerText = pair.remote.protocol.toUpperCase();
}
Specifications
Specification |
---|
WebRTC 1.0: Real-Time Communication Between Browsers # event-icetransport-selectedcandidatepairchange |
Browser compatibility
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