MediaKeySession: message event

{{APIRef("Encrypted Media Extensions")}}{{SecureContext_Header}}

The message event of the {{domxref("MediaKeySession")}} interface fires when a message is generated by the content decryption module.

Syntax

Use the event name in methods like {{domxref("EventTarget.addEventListener", "addEventListener()")}}, or set an event handler property.

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

onmessage = (event) => { }

Event type

A {{domxref("MediaKeyMessageEvent")}}. Inherits from {{domxref("Event")}}.

{{InheritanceDiagram("MediaKeyMessageEvent")}}

Event properties

• {{domxref("MediaKeyMessageEvent.message")}} {{ReadOnlyInline}}
  • : Returns an {{jsxref("ArrayBuffer")}} with a message from the content decryption module. Messages vary by key system.
• {{domxref("MediaKeyMessageEvent.messageType")}} {{ReadOnlyInline}}
  • : Indicates the type of message. May be one of license-request, license-renewal, license-release, or individualization-request.

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}