Examples of org.jgroups.stack.AckSenderWindow

org.jgroups.stack.AckSenderWindow
ACK-based sliding window for a sender. Messages are added to the window keyed by seqno When an ACK is received, the corresponding message is removed. The Retransmitter continously iterates over the entries in the hashmap, retransmitting messages based on their creation time and an (increasing) timeout. When there are no more messages in the retransmission table left, the thread terminates. It will be re-activated when a new entry is added to the retransmission table. @author Bela Ban

    private void handleAckReceived(Address sender, long seqno) {
        if(log.isTraceEnabled())
            log.trace(new StringBuilder().append(local_addr).append(" <-- ACK(").append(sender).
                    append(": #").append(seqno).append(')'));
        SenderEntry entry=send_table.get(sender);
        AckSenderWindow win=entry != null? entry.sent_msgs : null;
        if(win != null) {
            win.ack(seqno); // removes message from retransmission
            num_acks_received++;
        }
    }

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     */
    private void handleResendingOfFirstMessage(Address sender) {
        if(log.isTraceEnabled())
            log.trace(local_addr + " <-- SEND_FIRST_SEQNO(" + sender + ")");
        SenderEntry entry=send_table.get(sender);
        AckSenderWindow win=entry != null? entry.sent_msgs : null;
        if(win == null) {
            if(log.isErrorEnabled())
                log.error(local_addr + ": sender window for " + sender + " not found");
            return;
        }
        Message rsp=win.getLowestMessage();
        if(rsp == null)
            return;


        // We need to copy the UnicastHeader and put it back into the message because Message.copy() doesn't copy
        // the headers and therefore we'd modify the original message in the sender retransmission window

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        final Lock              lock=new ReentrantLock();


        public SenderEntry(short send_conn_id, AckSenderWindow.RetransmitCommand cmd, long[] timeout,
                           TimeScheduler timer, Address local_addr) {
            this.send_conn_id=send_conn_id;
            sent_msgs=new AckSenderWindow(cmd, new StaticInterval(timeout), timer, local_addr);
        }

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