Exemple #1
0
  protected void handleAckReceived(Address sender, long seqno, short conn_id) {
    if (log.isTraceEnabled())
      log.trace(
          new StringBuilder()
              .append(local_addr)
              .append(" <-- ACK(")
              .append(sender)
              .append(": #")
              .append(seqno)
              .append(", conn-id=")
              .append(conn_id)
              .append(')'));
    SenderEntry entry = send_table.get(sender);

    if (entry != null && entry.send_conn_id != conn_id) {
      if (log.isTraceEnabled())
        log.trace(
            local_addr
                + ": my conn_id ("
                + entry.send_conn_id
                + ") != received conn_id ("
                + conn_id
                + "); discarding ACK");
      return;
    }

    Table<Message> win = entry != null ? entry.sent_msgs : null;
    if (win != null) {
      win.purge(seqno, true); // removes all messages <= seqno (forced purge)
      num_acks_received++;
    }
  }
Exemple #2
0
  /**
   * 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 hd Highest delivered seqno
   * @param hr Highest received seqno
   */
  protected void stable(Address sender, short conn_id, long hd, long hr) {
    SenderEntry entry = send_table.get(sender);
    Table<Message> 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(hd)
                  .append("-")
                  .append(hr)
                  .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.purge(hd, true);
    long win_hr = win.getHighestReceived();
    if (win_hr > hr) {
      for (long seqno = hr; seqno <= win_hr; 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));
      }
    }
  }