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RTCIceTransport: statechange event

A statechange event occurs when the RTCIceTransport changes state. The state can be used to determine how far through the process of examining, verifying, and selecting a valid candidate pair is prior to successfully connecting the two peers for WebRTC communications.

This event is not cancelable and does not bubble.

Syntax

Use the event name in methods like addEventListener(), or set an event handler property.

js

addEventListener("statechange", (event) => {});

onstatechange = (event) => {};

Event type

A generic Event.

Examples

Given an RTCPeerConnection, pc, the following code creates an event handler that calls a function named handleFailure() if the ICE transport enters a failure state.

js

let iceTransport = pc.getSenders()[0].transport.iceTransport;

iceTransport.addEventListener(
  "statechange",
  (ev) => {
    if (iceTransport.state === "failed") {
      handleFailure(pc);
    }
  },
  false,
);

The same code, using the onstatechange event handler property, looks like this:

js

let iceTransport = pc.getSenders()[0].transport.iceTransport;

iceTransport.onstatechange = (ev) => {
  if (iceTransport.state === "failed") {
    handleFailure(pc);
  }
};

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
statechange_event 75 79 No No 62 15.4 75 75 No 54 15.4 11.0

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/RTCIceTransport/statechange_event