anchor.diff:      _SendingTime = {sending_time, timer:now_diff(T2, T1)},
       _ReceivingTime = {receiving_time, timer:now_diff(T3, T2)},
       _FullTime = {full_time, timer:now_diff(T3, T1)},
  -%%     ct:print("~p ~p ~p", [_SendingTime, _ReceivingTime, _FullTime]),
  -    ssl:close(Sock).
  +    ct:print("~p ~p ~p", [_SendingTime, _ReceivingTime, _FullTime]),
  +    Transport:close(Sock).
   
   %%%===================================================================
   %%% SetUp and TearDown functions
  
positive.code: -perf_test([
      {repeats, 10},
      {perf_configs, [
          [{packet_size_kilobytes, 1024}, {packet_num, 100}]
      ]},
      {ct_config, [{packet_size_kilobytes, 1024}, {packet_num, 100}]}
  ]).
  bandwidth_test(Config) ->
      % given
      [Worker1 | _] = Workers = ?config(op_worker_nodes, Config),
      PacketSize = ?config(packet_size_kilobytes, Config),
      PacketNum = ?config(packet_num, Config),
      Data = crypto:rand_bytes(PacketSize*1024),
      Packet = #'ClientMessage'{message_body = {data, #'Data'{data = Data}}},
      PacketRaw = client_messages:encode_msg(Packet),
  
negative.code:         end),
  
      % when
      {ok, {Sock, _}} = connect_via_token(Worker1, [{active, true}], Transport),
      T1 = os:timestamp(),
      lists:foreach(fun(_) -> ok = Transport:send(Sock, PacketRaw) end, lists:seq(1, PacketNum)),
      T2 = os:timestamp(),
  
      % then
  