hxr.timeout = 1000; //ms
hxr.ontimeout = function(){ hxr.abort();
// No root needed, timer is cleaned up at the same time as XHR object.

//Sub optimal: 
// 1. I need a "root" object, 
// 2. I need to cleanup the dynamically allocated timer. 
var timer = Qt.createQmlObject("import QtQuick 2.3; Timer {interval: 1000; repeat: false; running: true;}",root,"MyTimer");
                timer.triggered.connect(function(){ hxr.abort(); });