Made a comment up above, but that's tdpServer and tmpServer (sometimes tdpd and tmpd) and it's what I use in my python implementation of tmpcli, the (somewhat broken) client binary on some TP-Link devices.
You're correct, it gives you access to everything the Tether app can do.
You're correct, it gives you access to everything the Tether app can do.
https://github.com/ropbear/tmpcli