# File lib/rack/handler/cgi.rb, line 10
      def self.serve(app)
        app = ContentLength.new(app)

        env = ENV.to_hash
        env.delete "HTTP_CONTENT_LENGTH"

        env["SCRIPT_NAME"] = ""  if env["SCRIPT_NAME"] == "/"

        env.update({"rack.version" => [1,0],
                     "rack.input" => $stdin,
                     "rack.errors" => $stderr,

                     "rack.multithread" => false,
                     "rack.multiprocess" => true,
                     "rack.run_once" => true,

                     "rack.url_scheme" => ["yes", "on", "1"].include?(ENV["HTTPS"]) ? "https" : "http"
                   })

        env["QUERY_STRING"] ||= ""
        env["HTTP_VERSION"] ||= env["SERVER_PROTOCOL"]
        env["REQUEST_PATH"] ||= "/"

        status, headers, body = app.call(env)
        begin
          send_headers status, headers
          send_body body
        ensure
          body.close  if body.respond_to? :close
        end
      end