queston about the tester-streams

[Johndoe297]

Hello sir I am trying to build a quic stream system model. And I planned to revise the quic-tester-stream.cc file at first. However, when i trace this file in wireshark, I found that the packts are sent from the client to the server and the ack packet from server to client side is not available

Because I did not really change this default file, so I was thinking whether it is because my ns 3 set up or some nodes setting up problem in this file? sincerely