VPN

OPENVPN

https://openvpn.net/

https://stackoverflow.com/questions/32048832/node-js-programmatically-connect-to-a-vpn-or-route-http-requests-via-vpn

VPNBOOK

https://www.youtube.com/watch?v=N1gJcVsGM_g

shadowsocks

https://shadowsocks.org/en/index.html

KCPTUN

https://github.com/xtaci/kcptun

https://www.8dlive.com/post/371.html