WebsocketExtensionManager

SoupWebsocketExtensionManager is the [iface@SessionFeature] that handles WebSockets extensions for a [class@Session].

A [class@WebsocketExtensionManager] is added to the session by default, and normally you don't need to worry about it at all. However, if you want to disable WebSocket extensions, you can remove the feature from the session with [method@Session.remove_feature_by_type] or disable it on individual requests with [method@Message.disable_feature].