MediaKeySession: message event

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2019.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The message event of the MediaKeySession interface fires when a message is generated by the content decryption module.

Syntax

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

js
addEventListener("message", (event) => {});

onmessage = (event) => {};

Event type

Event properties

MediaKeyMessageEvent.message Read only

Returns an ArrayBuffer with a message from the content decryption module. Messages vary by key system.

MediaKeyMessageEvent.messageType Read only

Indicates the type of message. May be one of license-request, license-renewal, license-release, or individualization-request.

Specifications

Specification
Encrypted Media Extensions
# dom-mediakeysession-onmessage

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
message event

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
Partial support
Partial support
Has more compatibility info.