How to get data from OpenVPN host?

Question

Nginx

I have a Rasberry Pi connected to an OpenVPN server. Nginx also lives on the server, on which a small static site is spinning. If you access the RPi over the Web, it will return the response in the form of JSON. How can I get data from the VPN client on the site?

Answer 1

Request data from the client on the server.

Answer 2

nginx + lua