private void sendRequestForFirstSeqno(Address dest, long seqno_received) { Message msg = new Message(dest); msg.setFlag(Message.OOB); Unicast2Header hdr = Unicast2Header.createSendFirstSeqnoHeader(seqno_received); msg.putHeader(this.id, hdr); if (log.isTraceEnabled()) log.trace(local_addr + " --> SEND_FIRST_SEQNO(" + dest + "," + seqno_received + ")"); down_prot.down(new Event(Event.MSG, msg)); }