private boolean use_mcast_xmit=true;
private boolean xmit_from_random_member=false;
private boolean discard_delivered_msgs=false;
private int max_xmit_buf_size=0;
private final ConcurrentMap<Address,NakReceiverWindow> received_msgs=new ConcurrentHashMap<Address,NakReceiverWindow>(11);
<BUG>private final TreeMap sent_msgs=new TreeMap();
</BUG>
private boolean leaving=false;
private boolean started=false;
private TimeScheduler timer=null;

private boolean use_mcast_xmit=true;
private boolean xmit_from_random_member=false;
private boolean discard_delivered_msgs=false;
private int max_xmit_buf_size=0;
private final ConcurrentMap<Address,NakReceiverWindow> received_msgs=new ConcurrentHashMap<Address,NakReceiverWindow>(11);
private final TreeMap<Long,Message> sent_msgs=new TreeMap<Long,Message>();
private boolean leaving=false;
private boolean started=false;
private TimeScheduler timer=null;
