I am using Openfire as an XMPP server and strophe as an XMPP client. If a chatroom c1 is created by a user a and participants are b,c,d. But b and c are online and they have an active connection with XMPP server(Openfire) So, how b and c users can join the room by getting the notification on creating of the chatroom. Is there any option available as a feature of XMPP or in Openfire like event management?