code: @Override
      public void destroy() {
          synchronized (channels) {
              isCurrentlyShutingDown = true;
              for (final SynchronizeFXTomcatChannel server : channels.values()) {
                  server.shutdown();
              }
              servers.clear();
              channels.clear();
              isCurrentlyShutingDown = false;
  
          }
      }
docs: Disconnect all clients an clear the connections when the handler is destroyed by CDI.