Comment by ssl-3

Seems to work well, at least between my Linux desktop and my wifi-connected Android phone; both showed up without any hassle, and sending files each way was boring in the best of ways.

It also supports something it calls "Private Room," which doesn't require the endpoints to be on the same LAN. This also works well, at least with my phone on 5G and the Linux box ultimately connected with DOCSIS.

No idea how many intermediaries, if any, are involved with any of this, and for my normal purposes I don't care at all.