TheMediaKeySession interface of theEncrypted Media Extensions API represents a context for message exchange with a content decryption module (CDM).

Instance properties

MediaKeySession.closedRead only

Returns aPromise signaling when aMediaKeySession closes. This promise can only be fulfilled and is never rejected. Closing a session means that licenses and keys associated with it are no longer valid for decrypting media data.

MediaKeySession.expirationRead only

The time after which the keys in the current session can no longer be used to decrypt media data, orNaN if no such time exists. This value is determined by the CDM and measured in milliseconds since January 1, 1970, UTC. This value may change during a session lifetime, such as when an action triggers the start of a window.

MediaKeySession.keyStatusesRead only

Contains a reference to a read-onlyMediaKeyStatusMap of the current session's keys and their statuses.

MediaKeySession.sessionIdRead only

Contains a unique string generated by the CDM for the current media object and its associated keys or licenses.

Events

keystatuseschange

Fires when there has been a change in the keys in a session or their statuses.

message

Fires when the content decryption module has generated a message for the session.

Instance methods

MediaKeySession.close()

Returns aPromise after notifying the current media session is no longer needed and that the CDM should release any resources associated with this object and close it.

MediaKeySession.generateRequest()

Returns aPromise after generating a license request based on initialization data.

MediaKeySession.load()

Returns aPromise that resolves to a boolean value after loading data for a specified session object.

MediaKeySession.remove()

Returns aPromise after removing any session data associated with the current object.

MediaKeySession.update()

Returns aPromise after loading messages and licenses to the CDM.

Examples

// TBD

Specifications

Browser compatibility