Add support for a WebSocket extension of the given extension_type.
When a WebSocket client requests an extension of extension_type, a new classWebsocketExtension of type extension_type will be created to handle the request.
Note that classWebsocketExtensionDeflate is supported by default, use soup.server.Server.removeWebsocketExtension if you want to disable it.
a #GType
Add support for a WebSocket extension of the given extension_type.
When a WebSocket client requests an extension of extension_type, a new classWebsocketExtension of type extension_type will be created to handle the request.
Note that classWebsocketExtensionDeflate is supported by default, use soup.server.Server.removeWebsocketExtension if you want to disable it.