Dear all,
in latest server version some ports were changed.
Admin port : 7443 -> 9443 (merged with HTTPS API); Since 0.23.1.
Plain WebSockets port : 8082 -> 8080 (merged with HTTP API); Since 0.23.0.
SSL WebSockets port : 8081 -> 9443 (merged with HTTPS API); Since 0.23.0.