can we set our ip address to be used in Perl SSLeay request?

Question

I'm modifying CGIProxy to be enable to pass client IP address to remote/target, so remote will identify that the request is from client (not proxy server). Is it possible to do this thing? CGIProxy uses SSLeay for sending request to SSL server. But I need to pass client IP address through all protocol provided (http, https, ftp). I'm not really understand about both of proxy concept and network programming.

Answer 1

Usually a proxy is not source-transparent, e.g. it will have it's own address as the client address in the connection to the target server and not the original client address. This is especially true for a CGI-script working as a proxy like in your case. This behavior is independent from using a TLS or a plain TCP connection.

But some (often misconfigured) servers check for an X-Forwarded-For request header to determine the original client IP. This header can be set from inside the proxy, but again this is independent from using TLS or plain TCP.