require 'rubygems' require 'rack' require 'rack/geoip' class BasicRackApp def call(env) [200, {'Content-Type' => 'text/plain'}, 'Your request did not hit the geoip lookup'] end end use Rack::Geoip, :path => '/lookup', :db => 'data/GeoLiteCity.dat' run BasicRackApp.new