anchor.diff:    end;
   
   process(_, Req) -> end_with_failure(405, "Method not allowed.", Req).
  -
  -handle_query({file_info, _OUkey, _FileKey}, Req) -> {info, [], Req};
  -
  -handle_query({file_upload, _OUkey}, Req) -> {info, [], Req}.
   
   echo(Status, Echo, Req) ->
     cowboy_req:reply(Status, [
  
positive.code:   {ok, Req, State}.
  
  process(<<"GET">>, Req) ->
    case handle_query({file_info, "OUkey", "FileKey"}, Req) of
      {info, FileInfo, Req1} -> echo(200, jiffy:encode({FileInfo}), Req1);
      _ -> end_with_failure(404, "Resource not found", Req)
    end;
  
  process(<<"POST">>, Req) ->
  
negative.code:     undefined -> end_with_failure(400, "No Valid Arguments", Req2);
      OUkeyBin ->
        OUkey = binary:bin_to_list(OUkeyBin),
  
        case user_server:match_ouKey(OUkey) of
          {ok, Ukey} ->
            case cowboy_req:parse_header(<<"content-type">>, Req2) of
  