This was on Android, very difficult to implement and then too heavy to use both on speed and battery of the device.

There are technologies that didn't exist at the time like NAT hole punching and WebRTC. With those two features alone is easy to achieve similar results with a simpler approach and far higher bandwidth.

For example, two phones can directly connect with each other no matter in which networks they are, or you can configure multiple jumps when needing to access Internet sites.