x-forwarded-port not being set correctly... maybe

Created by: trvsdnn

My understanding is that x-forwarded-port should be set to the server port that the request came in on: 80, 443, etc.

If that's the case, it's not happening. req.connection.remotePort is the requesting client's remote port. I didn't see an obvious way to get the server from the request, but it seems easy enough to determine it from the host header/protocol.

Assuming I'm understanding x-forwarded-port correctly, I've got a branch that fixes the issue here:

https://github.com/blahed/node-http-proxy/compare/x-forwarded-port