anchor.diff:                               end,
                                Req),
                       ?reply_partial_content(Headers2, Req2);
  -                {ok, #?METADATA{del = 1}} ->
  -                    ?access_log_get(BucketName, Key, 0, ?HTTP_ST_NOT_FOUND, BeginTime),
  -                    ?reply_not_found_without_body([?SERVER_HEADER], Req);
  -                {error, Cause} ->
  -                    reply_fun({error, Cause}, get, BucketName, Key, 0, Req, BeginTime)
  +                {error, bad_range} ->
  +                    ?access_log_get(BucketName, Key, 0, ?HTTP_ST_BAD_RANGE, BeginTime),
  +                    ?reply_bad_range([?SERVER_HEADER], Key, <<>>, Req);
               end;
  -        {error, bad_range} ->
  -            ?access_log_get(BucketName, Key, 0, ?HTTP_ST_BAD_RANGE, BeginTime),
  -            ?reply_bad_range([?SERVER_HEADER], Key, <<>>, Req);
  +        {ok, #?METADATA{del = 1}} ->
  +            ?access_log_get(BucketName, Key, 0, ?HTTP_ST_NOT_FOUND, BeginTime),
  +            ?reply_not_found_without_body([?SERVER_HEADER], Req);
           {error, Cause} ->
               reply_fun({error, Cause}, get, BucketName, Key, 0, Req, BeginTime)
       end.
  
positive.code:     ?access_log_get(BucketName, Key, 0, ?HTTP_ST_BAD_RANGE, BeginTime),
      ?reply_bad_range([?SERVER_HEADER], Key, <<>>, Req);
  get_range_object(Req, BucketName, Key, {_Unit, Range}, SendChunkLen, BeginTime) when is_list(Range) ->
      case get_body_length(Key, Range) of
          {ok, Length} ->
              case leo_gateway_rpc_handler:head(Key) of
                  {ok, #?METADATA{del = 0,
                                  meta = CMetaBin} = Meta}->
                      Timestamp = leo_http:rfc1123_date(Meta#?METADATA.timestamp),
                      Headers = [?SERVER_HEADER,
                                 {?HTTP_HEAD_RESP_CONTENT_TYPE, leo_mime:guess_mime(Key)},
  
negative.code: 
  
  %% @private
  get_body_length(Key, #?METADATA{dsize = ObjectSize}, Range) ->
      get_body_length_1(Range, ObjectSize, 0).
  
  %% @private
  get_body_length_1([], _ObjectSize, Acc) ->
  