I'm developing an Android app to establish a PPTP VPN connection to a server.
I've read some code samples and guides like this and also I've found that there are some classes like ToyVpn which implemented android VpnService. I think this samples are based on non-PPTP connection, but I need a guide which shows me the way of establishing a PPTP connection and set username and password for this connection.
Thanks in advace.