How i can run the graphhopper on https?
GrapHopper uses an embedded Jetty, so probably something like this would work.
Or put a reverse proxy like nginx in front of it.
How i can put the reverse proxy server in front of graphhopper?
You can use any method you like. Different servers, same server with different ports, etc. There are tons of tutorials out there that explain how to setup nginx, Apache, or any web server you fancy.