How to get remote hostname from behind mongrel cluster in rails?

Rails
1

Using request.env[‘REMOTE_HOST’] worked with WEBrick, but returns
blank when running behind mongrel cluster.
For IP Address, I am able to use request.remote_ip.
Thank you.

2

I haven’t done this specifically, but I think you would need to
specifically
forward certain header(s) from your front end proxy — maybe something
like
X-Forwarded-Server.

3

Thanks. Does anyone know how I can do this?