# File lib/rack/handler/scgi.rb, line 11
      def self.run(app, options=nil)
        options[:Socket] = UNIXServer.new(options[:File]) if options[:File]
        new(options.merge(:app=>app,
                          :host=>options[:Host],
                          :port=>options[:Port],
                          :socket=>options[:Socket])).listen
      end