You can view TCP contents in the mitmproxy UI since a few months (thanks to some excellent community contributions). Minimal example: mitmproxy --mode revers

You can view TCP contents in the mitmproxy UI since a few months (thanks to some excellent community contributions). Minimal example: mitmproxy --mode reverse:http://example.com --tcp-hosts example.com curl http://localhost:8080/ There's still quite a bit we want to improve on (e.g., our protocol detection currently fails for protocols that start with a server-side greeting), but the basic TCP viewing functionality is there. :)