GetSourceIP retrieves the IP from the request headers and falls back to r.RemoteAddr when necessary.

GetSourceIPFromHeaders retrieves the IP from the X-Forwarded-For, X-Real-IP and RFC7239 Forwarded headers (in that order).

GetSourceScheme retrieves the scheme from the X-Forwarded-Proto and RFC7239 Forwarded headers (in that order).

NewForwarder creates an instance of Forwarder based on the provided list of configuration options.

Forwarder forwards all incoming HTTP requests to configured transport.