# File lib/ramaze/helper/send_file.rb, line 20
      def send_file(filename, content_type = nil, content_disposition = nil)
        content_type ||= Rack::Mime.mime_type(::File.extname(filename))
        content_disposition ||= File.basename(filename)

        response.body = ::File.open(filename, 'rb')
        response['Content-Length'] = ::File.size(filename).to_s
        response['Content-Type'] = content_type
        response['Content-Disposition'] = content_disposition
        response.status = 200

        throw(:respond, response)
      end