class ActionDispatch::Integration::Session

def url_options
  @url_options ||= default_url_options.dup.tap do |url_options|
    url_options.reverse_merge!(controller.url_options) if controller
    if @app.respond_to?(:routes)
      url_options.reverse_merge!(@app.routes.default_url_options)
    end
    url_options.reverse_merge!(:host => host, :protocol => https? ? "https" : "http")
  end
end