public static Map<Integer, Integer> getConnected() {
        Map<Integer, Integer> ret = new HashMap<>();
        int total = 0;
        for (ChannelServer cs : ChannelServer.getAllInstances()) {
            int curConnected = cs.getConnectedClients();
            ret.put(cs.getChannel(), curConnected);
            total += curConnected;
        }
        ret.put(0, total);
        return ret;
    }