original-url
Reconstruct the original URL used in an HTTP request based on the HTTP request headers
forwarded-for
Abstraction for retrieving ip address information from a Node.js connection. Searches for proxy headers before degrading req.address
x-forwarded-fetch
A middleware for fetch() behind a reverse proxy with X-Forwarded-* headers.
express-public-url
Makes it easy to access correct URL when running behind a proxy or load balancer