demonstration program for the Nativescript bug NativeScript/NativeScript#3996
the master branch is working programs on Nativescript 2.5; the ns_3 branch is ported to NS 3.0 from master following the Nativescript 3.0 announcement instructions.
This program is a browser of the network printers available on the network, discovered via the native zeroconf networking APIs on both Android (NSD) and iOS (Bonjour). The typescript code accessing the native APIs is in
app/pages/discovery/zeroconf.android.ts
app/pages/discovery/zeroconf.ios.ts