build

# File actionpack/lib/action_dispatch/middleware/cookies.rb, line 219
      def self.build(request)
        env = request.env
        key_generator = env[GENERATOR_KEY]
        options = options_for_env env

        host = request.host
        secure = request.ssl?

        new(key_generator, host, secure, options).tap do |hash|
          hash.update(request.cookies)
        end
      end