I did some digging using TCPView and found https://en.wikipedia.org/wiki/WS-Discovery https://en.wikipedia.org/wiki/WS-Discovery Web Services Dynamic Discovery

I did some digging using TCPView and found https://en.wikipedia.org/wiki/WS-Discovery https://en.wikipedia.org/wiki/WS-Discovery Web Services Dynamic Discovery (WS-Discovery Inside windows this listens on UDP 3702 and is hosted by dasHost.exe / Device Association Services. Here are microsoft's Developer docs for the WSDAPI https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src/WsdApi/overview-of-the-wsdapi-interfaces.md https://github.com/MicrosoftDocs/win32/blob/docs/desktop-src... I didn't see any linux or android implementation but it could be out there with some more digging.