public async Task <MqttBasePacket> ReceivePacketAsync(TimeSpan timeout, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
ReceivedMqttPacket receivedMqttPacket;
if (timeout == TimeSpan.Zero)
{
receivedMqttPacket = await ReceiveAsync(cancellationToken).ConfigureAwait(false);
}
else
{
receivedMqttPacket = await MqttTaskTimeout.WaitAsync(ReceiveAsync, timeout, cancellationToken).ConfigureAwait(false);
}
if (receivedMqttPacket == null || cancellationToken.IsCancellationRequested)
{
return(null);
}
Interlocked.Add(ref _bytesSent, receivedMqttPacket.TotalLength);
if (PacketFormatterAdapter.ProtocolVersion == MqttProtocolVersion.Unknown)
{
PacketFormatterAdapter.DetectProtocolVersion(receivedMqttPacket);
}
var packet = PacketFormatterAdapter.Decode(receivedMqttPacket);
if (packet == null)
{
throw new MqttProtocolViolationException("Received malformed packet.");
}
_logger.Verbose("RX ({0} bytes) <<< {1}", receivedMqttPacket.TotalLength, packet);
return(packet);
}
catch (OperationCanceledException)
{
}
catch (ObjectDisposedException)
{
}
catch (Exception exception)
{
if (IsWrappedException(exception))
{
throw;
}
WrapException(exception);
}
return(null);
}
public async Task <MqttBasePacket> ReceivePacketAsync(CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
try
{
_packetInspectorHandler.BeginReceivePacket();
var receivedPacket = await ReceiveAsync(cancellationToken).ConfigureAwait(false);
if (receivedPacket == null || cancellationToken.IsCancellationRequested)
{
return(null);
}
_packetInspectorHandler.EndReceivePacket();
Interlocked.Add(ref _bytesSent, receivedPacket.TotalLength);
if (PacketFormatterAdapter.ProtocolVersion == MqttProtocolVersion.Unknown)
{
PacketFormatterAdapter.DetectProtocolVersion(receivedPacket);
}
var packet = PacketFormatterAdapter.Decode(receivedPacket);
if (packet == null)
{
throw new MqttProtocolViolationException("Received malformed packet.");
}
_logger.Verbose("RX ({0} bytes) <<< {1}", receivedPacket.TotalLength, packet);
return(packet);
}
catch (OperationCanceledException)
{
}
catch (ObjectDisposedException)
{
}
catch (Exception exception)
{
if (IsWrappedException(exception))
{
throw;
}
WrapAndThrowException(exception);
}
return(null);
}