# File lib/omniauth/strategies/cas3.rb, line 114
      def cas_url
        extract_url if options['url']
        validate_cas_setup
        @cas_url ||= begin
          uri = Addressable::URI.new
          uri.host = options.host
          uri.scheme = options.ssl ? 'https' : 'http'
          uri.port = options.port
          uri.path = options.path
          uri.to_s
        end
      end