示例#1
0
  /**
   * We need to resend our first message with our conn_id
   *
   * @param sender
   * @param seqno Resend the non null messages in the range [lowest .. seqno]
   */
  protected void handleResendingOfFirstMessage(Address sender, long seqno) {
    if (log.isTraceEnabled())
      log.trace(local_addr + " <-- SEND_FIRST_SEQNO(" + sender + "," + seqno + ")");
    SenderEntry entry = send_table.get(sender);
    Table<Message> win = entry != null ? entry.sent_msgs : null;
    if (win == null) {
      if (log.isErrorEnabled())
        log.error(local_addr + ": sender window for " + sender + " not found");
      return;
    }

    boolean first_sent = false;
    for (long i = win.getLow() + 1; i <= seqno; i++) {
      Message rsp = win.get(i);
      if (rsp == null) continue;
      if (first_sent) {
        down_prot.down(new Event(Event.MSG, rsp));
      } else {
        first_sent = true;
        // 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
        // (https://jira.jboss.org/jira/browse/JGRP-965)
        Message copy = rsp.copy();
        Unicast2Header hdr = (Unicast2Header) copy.getHeader(this.id);
        Unicast2Header newhdr = hdr.copy();
        newhdr.first = true;
        copy.putHeader(this.id, newhdr);
        down_prot.down(new Event(Event.MSG, copy));
      }
    }
  }