@router.websocket("/subscribe/some/data/changes")
async def subscribe_connectors_status(
    websocket: WebSocket,
) -> None:
    async def send_some_data() -> None:
        last_data = await get_data()
        await websocket.send_json({"data": last_data})
        while True:
            await asyncio.sleep(1)
            new_data = await get_data()
            if new_data != last_data:
                # This happens very rarely that's why I would like to close all of these unused tasks.
                last_data = new_data
                await websocket.send_json({"foo": last_data})

    async def watch_status() -> None:
        while websocket.client_state == WebSocketState.CONNECTED:
            # We are not expecting any data, but this will change to the client state if the connection will be closed.
            await websocket.receive()

        tg.cancel_scope.cancel()

    await websocket.accept()
    async with create_task_group() as tg:
        tg.start_soon(watch_status)
        tg.start_soon(send_some_data)