Android vpn app using android vpnservice

Question

I want to create a app that connect to vpn server. i have adress, username and passowrd of the the server and i want to use android vpnservice for that. I know there are many question about vpn on this forum but they normally refer to using some open source library called ics-openvpn or use android hidden library.

So i don't want that, i want to implement it by myself but unfortunately i have very less understanding of vpn So please guide me where to start, what steps are there and what android library are there for these steps.

Answer 1

ToyVpn in android sdk's samples is a good place to start. You should know the protocol that server is using, and implements it after you set up a VpnService.