# RemoteMediaSessionExtension An app extension that provides remote media sessions. ``` @MainActor protocol RemoteMediaSessionExtension : AppExtension ``` ## Overview Implement this protocol in your app extension to handle remote playback sessions. For more information, see [Publishing remote media sessions](/documentation/NowPlaying/publishing-remote-media-sessions) The following example shows a basic extension implementation: ```swift @main struct MyPlaybackExtension: RemoteMediaSessionExtension { var configuration: RemoteMediaSessionExtensionConfiguration { RemoteMediaSessionExtensionConfiguration(extension: self) } func session(_ attributes: MySessionAttributes) async throws -> MySession { return MySession(attributes: attributes) } } ``` ## Topics ### Associated Types [`associatedtype Attributes`](/documentation/NowPlaying/RemoteMediaSessionExtension/Attributes) The type that represents attributes for your remote sessions. [`associatedtype Session : RemoteMediaSessionRepresentable`](/documentation/NowPlaying/RemoteMediaSessionExtension/Session) The type of session this extension creates. ### Instance Methods [`func session(Self.Attributes) async throws -> Self.Session`](/documentation/NowPlaying/RemoteMediaSessionExtension/session(_:)) Creates a session configured with the specified attributes. ## Relationships ### Inherits From [`AppExtension`](/documentation/ExtensionFoundation/AppExtension) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)