+ # Ping tick. We don't re-queue a timer there, it is instead queued when :pong is received.
+ # As we hibernate there, reset the count to 0.
+ # If the client misses :pong, Cowboy will automatically timeout the connection after
+ # `@idle_timeout`.
+ def websocket_info(:tick, state) do
+ {:reply, :ping, %{state | timer: nil, count: 0}, :hibernate}
+ end
+
+ # State can be `[]` only in case we terminate before switching to websocket,
+ # we already log errors for these cases in `init/1`, so just do nothing here
+ def terminate(_reason, _req, []), do: :ok
+