I have developed a ios chat application in Objective C, which communicates to Openfire as XMPP server. I would like to implement push notification in my app so that if the user closed/killed my application, still he could get the messages from other users (like whatsapp). By analyzing several tutorials from google, I have managed to implement push notification codes in my app and using some application like smart push, I could able to send the push notification. But still, this functionality should be implemented in the Openfire server. I have installed the below plugins in the Openfire server. But I have no idea how to access those plugins. Can someone guide me with this?