public void OnReceiveDisposition()

in src/AmqpSession.cs [778:845]
60 lines of code
11 McCabe index (conditional complexity)

            public void OnReceiveDisposition(Disposition disposition)
            {
                SequenceNumber first = disposition.First.Value;
                SequenceNumber last = disposition.Last ?? first;
                if (last < first)
                {
                    // Should be a protocol error
                    return;
                }

                List<Delivery> disposedDeliveries = new List<Delivery>();
                int settledCount = 0;
                lock (this.syncRoot)
                {
                    if (first >= this.nextDeliveryId)
                    {
                        return;
                    }

                    if (last > this.nextDeliveryId)
                    {
                        last = this.nextDeliveryId;
                    }

                    bool settled = disposition.Settled();
                    Delivery current = this.firstUnsettled;
                    while (current != null)
                    {
                        SequenceNumber sn = current.DeliveryId.Value;
                        if (sn < first)
                        {
                            current = current.Next;
                        }
                        else if (sn > last)
                        {
                            break;
                        }
                        else
                        {
                            Delivery delivery = current;
                            current = current.Next;

                            delivery.Settled = settled;
                            delivery.State = disposition.State;
                            if (settled)
                            {
                                ++settledCount;
                                Delivery.Remove(ref this.firstUnsettled, ref this.lastUnsettled, delivery);
                            }

                            disposedDeliveries.Add(delivery);
                        }
                    }
                }

                if (disposedDeliveries.Count > 0)
                {
                    foreach (Delivery delivery in disposedDeliveries)
                    {
                        delivery.Link.OnDisposeDelivery(delivery);
                    }

                    if (settledCount > 0)
                    {
                        this.OnWindowMoved(settledCount);
                    }
                }
            }