I'm writing some example code to run on a Raspberry Pi (under Mono running on Raspbian) and communicate with an IoT Hub. I'm using DeviceExplorer to monitor the hub and send messages. I'm using HTTPS transport, as I had trouble with AMQPS.
This is my current receive messages code:
public async void ReceiveMessages()
{
var pollRate = 180;
for (;;)
{
Message m = await _deviceClient.ReceiveAsync();
if( m==null)
{
_logger.LogDebug(string.Format(@"No message recieved so sleep for {0} seconds", pollRate));
Thread.Sleep(pollRate*1000);
}
else
{
var contents = Encoding.UTF8.GetString(m.GetBytes());
_logger.LogInfo(string.Format(@"Received message contents {0} {1} {2} {3} {4} {5} {6} {7}", contents, m.EnqueuedTimeUtc, m.ExpiryTimeUtc, m.LockToken, m.MessageId, m.SequenceNumber, m.To, m.UserId));
/*await*/ _deviceClient.CompleteAsync(m);
//_deviceClient.RejectAsync(m);
}
}
}According to DeviceExplorer the messages are being marked as Rejected:
Started monitoring feedback for device rjwpi.
Sent to Device ID: [rjwpi], Message:"{"msg":"hello7"}", message Id: d15454ac-defa-49b1-af4f-623bc1b5f1bc
Message Feedback status: "Rejected", Description: "Message rejected", Original Message Id: d15454ac-defa-49b1-af4f-623bc1b5f1bc
Has anybody else seen this behaviour?