public async Task EnableEventReceiveAsync(TimeSpan timeout)
{
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(EnableEventReceiveAsync)}");
}
try
{
Debug.Assert(_eventReceivingLink == null);
_eventReceivingLink = await _amqpIoTSession.OpenEventsReceiverLinkAsync(
_deviceIdentity,
timeout
).ConfigureAwait(false);
_eventReceivingLink.RegisterEventListener(OnEventsReceived);
_eventReceivingLink.Closed += OnLinkDisconnected;
if (Logging.IsEnabled)
{
Logging.Associate(this, this, _eventReceivingLink, $"{nameof(EnableEventReceiveAsync)}");
}
}
finally
{
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(EnableEventReceiveAsync)}");
}
}
}
public async Task EnableEventReceiveAsync(TimeSpan timeout)
{
if (_closed)
{
throw new IotHubException("Device is now offline.", false);
}
if (Logging.IsEnabled)
{
Logging.Enter(this, timeout, $"{nameof(EnableEventReceiveAsync)}");
}
AmqpIoTSession amqpIoTSession = await EnsureSessionAsync(timeout).ConfigureAwait(false);
bool gain = await _eventReceivingLinkLock.WaitAsync(timeout).ConfigureAwait(false);
if (!gain)
{
throw new TimeoutException();
}
try
{
if (_eventReceivingLink == null || _eventReceivingLink.IsClosing())
{
_eventReceivingLink?.SafeClose();
_eventReceivingLink = await amqpIoTSession.OpenEventsReceiverLinkAsync(_deviceIdentity, timeout).ConfigureAwait(false);
_eventReceivingLink.Closed += (obj, arg) =>
{
amqpIoTSession.SafeClose();
};
_eventReceivingLink.RegisterEventListener(OnEventsReceived);
if (Logging.IsEnabled)
{
Logging.Associate(this, this, _eventReceivingLink, $"{nameof(EnableEventReceiveAsync)}");
}
}
}
finally
{
_eventReceivingLinkLock.Release();
if (Logging.IsEnabled)
{
Logging.Exit(this, timeout, $"{nameof(EnableEventReceiveAsync)}");
}
}
}
public async Task EnableEventReceiveAsync(TimeSpan timeout)
{
if (_closed)
{
throw new IotHubException("Device is now offline.", false);
}
Logging.Enter(this, timeout, nameof(EnableEventReceiveAsync));
AmqpIoTSession amqpIoTSession = await EnsureSessionIsOpenAsync(timeout).ConfigureAwait(false);
bool enteredSemaphore = await _eventReceivingLinkSemaphore.WaitAsync(timeout).ConfigureAwait(false);
if (!enteredSemaphore)
{
throw new TimeoutException("Failed to enter the semaphore required for ensuring that AMQP event receiver links are open.");
}
try
{
if (_eventReceivingLink == null || _eventReceivingLink.IsClosing())
{
_eventReceivingLink?.SafeClose();
_eventReceivingLink = await amqpIoTSession.OpenEventsReceiverLinkAsync(_deviceIdentity, timeout).ConfigureAwait(false);
_eventReceivingLink.Closed += (obj, arg) =>
{
amqpIoTSession.SafeClose();
};
_eventReceivingLink.RegisterEventListener(OnEventsReceived);
Logging.Associate(this, this, _eventReceivingLink, nameof(EnableEventReceiveAsync));
}
}
finally
{
_eventReceivingLinkSemaphore.Release();
Logging.Exit(this, timeout, nameof(EnableEventReceiveAsync));
}
}
