Where do the functionalities (/prob, /update_computer, etc.) of PythonController come from?

[yantingxu]

Hi, I am reading through the project code and find that PythonController contains a lot of capabilies via requesting the web interface like /prob, /update_computer, /screenshot, /obs_winagent. I can only see the http server is at http://20.20.20.21:5000 and nothing else. When I login the container, I find these functionalities take effects only when qemu-system-x86_64 is launched and I cannot even see the port 5000 via netstat -nlp. I guess these functionalites are implemented in qemu-system-x86_64, which is directly provided in docker image "windowsarena/winarena". So it is not the original version of qemu but a modified one, am I right? If not, where do these functionalities come from?