Ruby on Rails

I have to change all headers in Ruby on rails response message. This
must be done because my application should read another www-page from
the other server and then send it to the client such as it comes from
the original web server.

I thought first that it is easy to change headers in class
ApplicationController < ActionController::Base by creating after
filter following way:

class ApplicationController < ActionController::Base
after_filter :customheaders

private

def customheaders
response.headers["Test header title"]="Test header value"
end
end

However, my application sends always just default headers. I know that
the after filter works because if I change body content in
customheaders -function, it works (response.body = "New body
content").

The application renders web page normally in a view-component. Rails
version is 3.0.3.

Would anyone know how I could change all headers of the response
message in application controller?

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