# File lib/rack/handler/fastcgi.rb, line 21
      def self.run(app, options={})
        if options[:File]
          STDIN.reopen(UNIXServer.new(options[:File]))
        elsif options[:Port]
          STDIN.reopen(TCPServer.new(options[:Host], options[:Port]))
        end
        FCGI.each { |request|
          serve request, app
        }
      end