PacketThrottle throttle = pn.getThrottle();
if(throttle == null)
return;
throttle.setRoundTripTime(rt);
if(validAck)
throttle.notifyOfPacketAcknowledged(maxSize);
}
/** Queue an ack.
* @return -1 If the ack was already queued, or the total number queued.
*/