Hi, Yesterday, I discovered that our attempted fix for https://issues.apache.org/jira/browse/WICKET-6944 didn't work. Application destroy listeners are still registered for every new Websocket connection and never cleared.
I can see two options to fix this: 1. Keep the current listeners and try to find a solution based on static fields and careful registering and unregistering of application listeners. 2. Add an AtomicBoolean Application#destroyed field that is set during Application#destroy and can be queried via Application#isAlive or Application#isDestroyed. This would allow us to replace the current listener based approach with something much simpler. WDYT? Best, Thomas
