Create VPN on Android programmatically

Question

I know this has been asked before, but most of them are 3 to 4 years ago with no definite answers. I would like to know if this is already possible as of 2015.

Answer 1

API is one for OpenVPN:

http://code.google.com/p/ics-openvpn/

This provides one potential VPN solution that you are fully in control of (the server is open-source also), but it is not PPTP or IPSec. If you understand the PPTP protocol, it should be possible to use this as a model to implement such a VPN client.

I think u find more information here:

How to programmatically create a new VPN interface with Android 4.0?