(function(scope){ 'use strict'; imprint.registerTest("publicIp", function(){ return new Promise(function(resolve) { var xmlHttp = new XMLHttpRequest(); xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4 && xmlHttp.status == 200) resolve(xmlHttp.responseText); } xmlHttp.open("GET", "https://api.ipify.org", true); // true for asynchronous xmlHttp.send(null); }); }); })(window);