/** * Purge all messages in window for local_addr, which are <= low. Check if the window's highest * received message is > high: if true, retransmit all messages from high - win.high to sender * * @param sender * @param highest_delivered * @param highest_seen */ protected void stable(Address sender, short conn_id, long highest_delivered, long highest_seen) { SenderEntry entry = send_table.get(sender); AckSenderWindow win = entry != null ? entry.sent_msgs : null; if (win == null) return; if (log.isTraceEnabled()) log.trace( new StringBuilder() .append(local_addr) .append(" <-- STABLE(") .append(sender) .append(": ") .append(highest_delivered) .append("-") .append(highest_seen) .append(", conn_id=" + conn_id) + ")"); if (entry.send_conn_id != conn_id) { log.warn( local_addr + ": my conn_id (" + entry.send_conn_id + ") != received conn_id (" + conn_id + "); discarding STABLE message !"); return; } win.ack(highest_delivered); long win_high = win.getHighest(); if (win_high > highest_seen) { for (long seqno = highest_seen; seqno <= win_high; seqno++) { Message msg = win.get( seqno); // destination is still the same (the member which sent the STABLE message) if (msg != null) down_prot.down(new Event(Event.MSG, msg)); } } }