anchor.diff:                     leo_misc:get_value('reading_chunked_obj_len',  HttpConf, 0),
                      leo_misc:get_value('threshold_of_chunk_len',   HttpConf, 0),
                      %% config-3:watchdog
  -                   leo_misc:get_value('cpu_enabled',    WatchdogProps),
  -                   leo_misc:get_value('io_enabled',     WatchdogProps),
  +                   exchange_value(?BOOL_TO_ENABLE,
  +                                  leo_misc:get_value('cpu_enabled', WatchdogProps)),
  +                   exchange_value(?BOOL_TO_ENABLE,
  +                                  leo_misc:get_value('io_enabled',  WatchdogProps)),
                      leo_misc:get_value('watch_interval', WatchdogProps),
                      leo_misc:get_value('rex_max_mem_capacity', WatchdogProps),
                      leo_misc:get_value('cpu_max_cpu_load_avg', WatchdogProps),
  
positive.code:                    ObjContainer,
                     leo_misc:get_value('log', Directories, []),
                     %% Watchdog
                     leo_misc:get_value('cpu_enabled',    WatchdogProps),
                     leo_misc:get_value('io_enabled',     WatchdogProps),
                     leo_misc:get_value('watch_interval', WatchdogProps),
                     leo_misc:get_value('rex_max_mem_capacity', WatchdogProps),
                     leo_misc:get_value('cpu_max_cpu_load_avg', WatchdogProps),
  
negative.code: 
      WatchdogProps = leo_misc:get_value('watchdog', State, []),
  
      io_lib:format(lists:append(["[config-1: basic]\r\n",
                                  "  -- basic --\r\n",
                                  "                      version : ~s\r\n",
                                  "                      log dir : ~s\r\n",
                                  "  -- http-server-related --\r\n",
                                  "          using api [s3|rest] : ~w\r\n",
                                  "               listening port : ~w\r\n",
  