# File lib/action_controller/request.rb, line 95 def remote_ip return env['HTTP_CLIENT_IP'] if env.include? 'HTTP_CLIENT_IP' if env.include? 'HTTP_X_FORWARDED_FOR' then remote_ips = env['HTTP_X_FORWARDED_FOR'].split(',').reject do |ip| ip =~ /^unknown$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./i end return remote_ips.first.strip unless remote_ips.empty? end env['REMOTE_ADDR'] end