protected override async Task <IList <BrokeredMessage> > OnReceiveAsync(int maxMessageCount, TimeSpan serverWaitTime)
{
ReceivingAmqpLink receiveLink = null;
try
{
TimeoutHelper timeoutHelper = new TimeoutHelper(serverWaitTime, true);
receiveLink = await this.ReceiveLinkManager.GetOrCreateAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false);
IEnumerable <AmqpMessage> amqpMessages = null;
bool hasMessages = await Task.Factory.FromAsync(
(c, s) => receiveLink.BeginReceiveRemoteMessages(maxMessageCount, AmqpMessageReceiver.DefaultBatchFlushInterval, timeoutHelper.RemainingTime(), c, s),
a => receiveLink.EndReceiveMessages(a, out amqpMessages),
this).ConfigureAwait(false);
if (receiveLink.TerminalException != null)
{
throw receiveLink.TerminalException;
}
if (hasMessages && amqpMessages != null)
{
IList <BrokeredMessage> brokeredMessages = null;
foreach (var amqpMessage in amqpMessages)
{
if (brokeredMessages == null)
{
brokeredMessages = new List <BrokeredMessage>();
}
if (this.ReceiveMode == ReceiveMode.ReceiveAndDelete)
{
receiveLink.DisposeDelivery(amqpMessage, true, AmqpConstants.AcceptedOutcome);
}
BrokeredMessage brokeredMessage = AmqpMessageConverter.ClientGetMessage(amqpMessage);
brokeredMessage.Receiver = this; // Associate the Message with this Receiver.
brokeredMessages.Add(brokeredMessage);
}
return(brokeredMessages);
}
return(null);
}
catch (Exception exception)
{
throw AmqpExceptionHelper.GetClientException(exception, receiveLink?.GetTrackingId());
}
}