Listener methods
This is the collection of listener methods within the WsServer interface. There are only three listener methods, addClientIdsListener, addPathIdsListener, and delListener.
addClientIdsListener
The addClientIdsListener method registers a listener function with the WsServer that will be called whenever there is a change in the clients connected to a path that a WsServer is handling.
addPathIdsListener
The addPathIdsListener method registers a listener function with the WsServer that will be called whenever there is a change in the active paths that a WsServer is handling.
delListener
The delListener method removes a listener that was previously added to the WsServer.