urlUtils.addProxyRule({
 urlPrefix: "route.arcgis.com",
 proxyUrl: "http://localhost:88/ArcGIS/PHP/proxy.php"
});
urlUtils.addProxyRule({
  urlPrefix: "traffic.arcgis.com",
  proxyUrl: "http://localhost:88/ArcGIS/PHP/proxy.php"
});

<?xml version="1.0" encoding="utf-8" ?>
<ProxyConfig allowedReferers="*"
         logFile="proxy_log.log"
         mustMatch="true">
<serverUrls>
  <serverUrl url="http://services.arcgisonline.com"
               username="*****"
               password="*****"
               matchAll="true"/>
    <serverUrl url="https://route.arcgis.com/"
               username="*****"
               password="*****"
               matchAll="true"/>
</serverUrls>
</ProxyConfig>

10-10-18 17:06:25 | GET detected
10-10-18 17:06:25 | Resource using ArcGIS Server security