for (int i = 0; i < 500; i++) {
XmppSession xmppSession = new XmppSession("christihudtsmbp.fritz.box", boshConnectionConfiguration);
System.out.println(i);
try {
xmppSession.connect();
xmppSession.login("admin", "admin", null);
//xmppSession.send(new Presence());
//xmppSession.getRosterManager().requestRoster();
xmppSession.close();
} catch (Exception e) {