anchor.diff:                                      sending_chunked_obj_len = Props#http_options.sending_chunked_obj_len,
                                       reading_chunked_obj_len = Props#http_options.reading_chunked_obj_len,
                                       threshold_of_chunk_len = Props#http_options.threshold_of_chunk_len,
  +                                    range_header = Range,
                                       begin_time = BeginTime},
               handle_2(Req, HTTPMethod, Path, ReqParams, State);
           false when HTTPMethod == ?HTTP_GET ->
  
positive.code: %% @doc RANGE-Query operation on Objects
  -spec(range_object(cowboy_req:req(), binary(), #req_params{}) ->
               {ok, cowboy_req:req()}).
  range_object(Req, Key,_Params) ->
      ?reply_bad_request([?SERVER_HEADER], ?XML_ERROR_CODE_InvalidArgument,
                         ?XML_ERROR_MSG_InvalidArgument, Key, <<>>, Req).
  
  
  %%--------------------------------------------------------------------
  %% Internal Functions
  
negative.code:     BeginTime = leo_date:clock(),
      TokenLen = length(binary:split(Path, [?BIN_SLASH], [global, trim])),
      HTTPMethod = cowboy_req:get(method, Req),
      Range = element(1, cowboy_req:header(?HTTP_HEAD_RANGE, Req)),
  
      case (TokenLen >= NumOfMinLayers) of
          true ->
  