public void broadCastToRoster(Message message) {
        Roster roster = con.getRoster();
        RosterEntry entry=null;
        for (Iterator i=roster.getEntries(); i.hasNext(); ) {
            entry=(RosterEntry) i.next();
            if (roster.getPresence(entry.getUser()) != null) {
                logger.info("Sending packet to "+ entry.getUser());
                Chat ch = con.createChat(entry.getUser());
                try {
                    ch.sendMessage(message);
                    logger.info("packet successfully dropped.");
                } catch (XMPPException e) {
                    logger.warn("Sending of packet failed.", e);
                }
            } else {
                logger.debug("User "+entry.getUser()+" is offline.");
            }
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                logger.warn("Interrupted during roster broadcast.");
            }
        }
    }