Issue behind Nginx reverse proxy

[suineg]

Unsure as to what settings need to be in the config for an Nginx reverse proxy.

server_name books.DOMAIN.org; location / { proxy_pass http://127.0.0.1:3030; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; }
Works for most everything else so curious as to what proxy_set are necessary to reach it. Straight IP works of course.