Nginx reverse proxy IP forwarding

Does anyone know how do i forward the IP address of my visitors with nginx reverse proxy because i am getting the IP of my droplet :(. This is what i have for it:

        proxy_set_header X-Real-IP  $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_set_header Host $host;
        proxy_pass http://127.0.0.1:8080;

I am using ubuntu 15.10