An independently reverse engineered C++20 AirPlay 2 sender

I ended up reverse engineering Apple's AirPlay 2 realtime audio sender path and writing it in C++20, and thought the C++ side might be interesting here. it's lifted out of a shipping product and runs daily against a real Apple TV 4K and a MacBook, but it's not yet a turnkey library. The sender still does its networking via Qt, and the roadmap is to move that behind a small transport interface so it builds without Qt. The crypto and wire format core already builds standalone. Corrections very welcome, especially on the security scoping (receiver identity auth is currently log and continue, which I document). https://github.com/akustikrausch/airplay2-sender-cpp

https://redd.it/1ucf7fr
@r_cpp