Apache.NMS.ActiveMQ.MessageConsumer.DeliverAcks C# (CSharp) Method

        public void DeliverAcks()
        {
            MessageAck ack = null;

            if(this.deliveringAcks.CompareAndSet(false, true))
            {
                if(this.IsAutoAcknowledgeEach)
                {
                    lock(this.dispatchedMessages)
                    {
                        ack = MakeAckForAllDeliveredMessages(AckType.DeliveredAck);
                        if(ack != null)
                        {
                            Tracer.Debug("Consumer - DeliverAcks clearing the Dispatch list");
                            this.dispatchedMessages.Clear();
                        }
                        else
                        {
                            ack = this.pendingAck;
                            this.pendingAck = null;
                        }
                    }
                }
                else if(pendingAck != null && pendingAck.AckType == (byte) AckType.ConsumedAck)
                {
                    ack = pendingAck;
                    pendingAck = null;
                }

                if(ack != null)
                {
                    MessageAck ackToSend = ack;

                    try
                    {
                        this.session.SendAck(ackToSend);
                    }
                    catch(Exception e)
                    {
                        Tracer.DebugFormat("{0} : Failed to send ack, {1}", this.info.ConsumerId, e);
                    }
                }
                else
                {
                    this.deliveringAcks.Value = false;
                }
            }
        }