getting the location of the server

actionpack/lib/action_controller/base.rb

@@ -44,10 +44,10 @@ module ActionController
   # The full request object is available via the request accessor and is primarily used to query for HTTP headers:
   #
   #   def server_ip
-  #     location = request.env["SERVER_ADDR"]
+  #     location = request.env["REMOTE_ADDR"]
   #     render plain: "This server hosted at #{location}"
   #   end
-  #
+  # 
   # == Parameters
   #
   # All request parameters, whether they come from a GET or POST request, or from the URL, are available through the params method