protected void OnReceiveFirstTransfer(Transfer transfer)
{
Fx.Assert(transfer.DeliveryId.HasValue, "The first transfer must have a delivery id.");
this.nextDeliveryId = transfer.DeliveryId.Value;
}
public bool TrySendTransfer(Delivery delivery, Transfer transfer, ArraySegment<byte>[] payload)
{
lock (this.SyncRoot)
{
if (this.outgoingWindow == 0)
{
AmqpTrace.Provider.AmqpSessionWindowClosed(this, (int)this.nextOutgoingId.Value);
return false;
}
this.nextOutgoingId.Increment();
if (this.outgoingWindow < uint.MaxValue)
{
this.outgoingWindow--;
}
if (delivery != null)
{
this.AddDelivery(delivery);
transfer.DeliveryId = delivery.DeliveryId.Value;
}
this.Session.SendCommand(transfer, payload);
}
return true;
}
public bool OnAcceptTransfer(Delivery delivery, Transfer transfer, bool newDelivery)
{
try
{
this.incomingChannel.OnAcceptTransfer(delivery, transfer, newDelivery);
return true;
}
catch (AmqpException exception)
{
this.SafeClose(exception);
return false;
}
}
// delivery MUST be null for continued transfer fragments
public bool TrySendTransfer(Delivery delivery, Transfer transfer, ArraySegment<byte>[] payload)
{
return this.outgoingChannel.TrySendTransfer(delivery, transfer, payload);
}
protected override void OnProcessTransfer(Delivery delivery, Transfer transfer, Frame rawFrame)
{
throw new NotImplementedException();
}
public override bool CreateDelivery(Transfer transfer, out Delivery delivery)
{
throw new NotImplementedException();
}
public void OnAcceptTransfer(Delivery delivery, Transfer transfer, bool newDelivery)
{
if (!this.transferEverReceived)
{
this.OnReceiveFirstTransfer(transfer);
this.transferEverReceived = true;
}
bool canAccept = false;
lock (this.SyncRoot)
{
if (this.incomingWindow > 0)
{
canAccept = true;
if (newDelivery)
{
this.AddDelivery(delivery);
}
this.nextIncomingId.Increment();
if (this.incomingWindow < uint.MaxValue)
{
this.incomingWindow--;
}
}
}
if (!canAccept)
{
AmqpTrace.Provider.AmqpSessionWindowClosed(this, (int)this.nextIncomingId.Value);
throw new AmqpException(AmqpErrorCode.WindowViolation, null);
}
if (!newDelivery)
{
// continued transfer for existing delivery: move window forward
this.OnWindowMoved(1);
}
}
