Configure reverse proxy on the server

I need reverse proxy to be configured on the server. Expected behavior: 1. When user requests http://servername/tracker URL, the server shoud fetch content from http://servername2/tracker URL. 2. When user requests https://servername/tracker URL, the server should fetch content from https://servername2/tracker URL or http://servername2/tracker URL Please note the https part, it should work also for work acceptance.