private async Task RunSvcAsync()
{
string errorMsg = "";
string updateMsg = "";
using (cancellationTokenSourceManual = new CancellationTokenSource())
{
ClientWebSocket stream = null;
try
{
DeviceStreamRequest deviceStreamRequest = new DeviceStreamRequest(
streamName: "TestStream"
);
updateMsg = "Starting Svc TestStream";
UpdateStatus(updateMsg);
cancellationTokenSourceManual.Token.Register(() =>
{
_serviceClient?.CloseAsync();
_serviceClient?.Dispose();
});
DeviceStreamResponse result = await _serviceClient.CreateStreamAsync(_deviceId, deviceStreamRequest).ConfigureAwait(false);
updateMsg = string.Format("Svc Stream response received: Name={0} IsAccepted={1}", deviceStreamRequest.StreamName, result.IsAccepted);
UpdateStatus(updateMsg);
if (result.IsAccepted)
{
using (cancellationTokenSourceTimeout = new CancellationTokenSource(DeviceStreamingCommon.DeviceTimeout))
{
try
{
using (stream = await DeviceStreamingCommon.GetStreamingClientAsync(result.Url, result.AuthorizationToken, cancellationTokenSourceTimeout.Token).ConfigureAwait(false))
{
updateMsg = "Stream is open.";
UpdateStatus(updateMsg);
bool keepAlive = false;
MsgOutWaitHandle = new AutoResetEvent(true);
do
{
//Nb: Not waited on first entry as waiting for msgOut, which we already have.
updateMsg = "Stream is open. Waiting for msg to send.";
UpdateStatus(updateMsg);
MsgOutWaitHandle.WaitOne();
updateMsg = "Sending msg.";
UpdateStatus(updateMsg);
bool caught = false;
try
{
MsgOut = SvcCurrentSettings.ProcessMsgOut(MsgOut, SvcCurrentSettings.KeepAlive, SvcCurrentSettings.ResponseExpected, DevKeepListening , DevAutoStart );
} catch (NotImplementedException )
{
errorMsg += "DeviceCurrentSettings not properly implemented";
keepAlive = false;
caught = true;
}
if (!caught)
{
await SendMsg(stream, MsgOut, cancellationTokenSourceTimeout);
updateMsg = "Sent msg.";
UpdateStatus(updateMsg);
if (this.SvcCurrentSettings.ResponseExpected)
{
byte[] receiveBuffer = new byte[1024];
System.ArraySegment<byte> ReceiveBuffer = new ArraySegment<byte>(receiveBuffer);
var receiveResult = await stream.ReceiveAsync(ReceiveBuffer, cancellationTokenSourceTimeout.Token).ConfigureAwait(false);
MsgIn = Encoding.UTF8.GetString(receiveBuffer, 0, receiveResult.Count);
string subStrn = Azure_IoTHub_DeviceStreaming.DeviceStreamingCommon.DeviceInSimuatedDeviceModeStrn;
int subStrnLen = subStrn.Length;
string subStrn2 = Azure_IoTHub_Sensors.TelemetryDataPoint.Prefix;
int subStrnLen2 = subStrn2.Length;
if (MsgIn.Length>= subStrnLen)
if (MsgIn.Substring(0,subStrnLen) == subStrn)
{
MsgIn = MsgIn.Substring(subStrnLen);
Azure_IoTHub_Telemetry.SyntheticIoTMessage iotHubMessage = Azure_IoTHub_Telemetry.SyntheticIoTMessage.Deserialize(MsgIn);
Microsoft.Azure.Devices.Client.Message message = iotHubMessage.ToMessage();
Microsoft.Azure.EventHubs.EventData eventData = Azure_IoTHub_Telemetry.SyntheticIoTMessage.ToEventData(message);
MsgIn = Azure_IoTHub_Telemetry.SyntheticIoTMessage.EventData_ToString(eventData);
}
else if (MsgIn.Length >= subStrnLen2)
if (MsgIn.Substring(0, subStrnLen2) == subStrn2)
{
MsgIn = MsgIn.Substring(subStrnLen2);
Azure_IoTHub_Sensors.TelemetryDataPoint telemetry = Azure_IoTHub_Sensors.TelemetryDataPoint.Deserialize(MsgIn);
MsgIn = telemetry.ToString();
//Microsoft.Azure.Devices.Client.Message message = iotHubMessage.ToMessage();
//Microsoft.Azure.EventHubs.EventData eventData = Azure_IoTHub_Telemetry.SyntheticIoTMessage.ToEventData(message);
//MsgIn = Azure_IoTHub_Telemetry.SyntheticIoTMessage.EventData_ToString(eventData);
}
keepAlive = false;
if (SvcCurrentSettings != null)
keepAlive = this.SvcCurrentSettings.KeepAlive;
try
{
if (OnRecvdTextD != null)
OnRecvdTextD(MsgIn);
}
catch (Exception exx)
{
errorMsg += "OnRecvdTextD not properly implemented: " + exx.Message;
keepAlive = false;
}
updateMsg = string.Format("Svc Received stream data: {0}", MsgIn);
UpdateStatus(updateMsg);
}
MsgOutWaitHandle.Reset();
}
} while (keepAlive) ;
MsgOutWaitHandle = null;
updateMsg = "Closing Svc Socket";
UpdateStatus(updateMsg);
await stream.CloseAsync(WebSocketCloseStatus.NormalClosure, String.Empty, cancellationTokenSourceTimeout.Token).ConfigureAwait(false);
stream = null;
}
}
catch (Microsoft.Azure.Devices.Client.Exceptions.IotHubCommunicationException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Hub connection failure");
errorMsg = "Hub connection failure";
}
catch (Microsoft.Azure.Devices.Common.Exceptions.DeviceNotFoundException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Device not found");
errorMsg = "Device not found";
}
catch (TaskCanceledException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Task cancelled");
errorMsg = "Task cancelled";
}
catch (OperationCanceledException)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Operation cancelled");
errorMsg = "Operation cancelled";
}
catch (Exception ex)
{
if ((bool)cancellationTokenSourceManual?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Cancelled.");
errorMsg = "Cancelled";
}
else if ((bool)cancellationTokenSourceTimeout?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): Timed Out.");
errorMsg = "Timed Out";
}
else if (!ex.Message.Contains("Timed out"))
{
System.Diagnostics.Debug.WriteLine("1 Error RunSvcAsync(): " + ex.Message);
errorMsg = ex.Message;
}
else
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed out");
errorMsg = "Timed Out";
}
}
}
}
}
catch (Microsoft.Azure.Devices.Client.Exceptions.IotHubCommunicationException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Hub connection failure");
errorMsg += " Hub connection failure";
}
catch (Microsoft.Azure.Devices.Common.Exceptions.DeviceNotFoundException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Device not found");
errorMsg += " Device not found";
}
catch (TaskCanceledException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Task cancelled");
errorMsg += " Task cancelled";
}
catch (OperationCanceledException)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Operation cancelled");
errorMsg += " Operation cancelled";
}
catch (Exception ex)
{ if ((bool)cancellationTokenSourceManual?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Cancelled.");
errorMsg += " Cancelled";
}
else if ((bool)cancellationTokenSourceTimeout?.IsCancellationRequested)
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed Out.");
errorMsg += " Timed Out";
}
else if (!ex.Message.Contains("Timed out"))
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): " + ex.Message);
errorMsg += " " + ex.Message;
}
else
{
System.Diagnostics.Debug.WriteLine("2 Error RunSvcAsync(): Timed out");
errorMsg += " Timed Out";
}
};
if (stream != null)
{
if (stream.CloseStatus != WebSocketCloseStatus.NormalClosure)
{
updateMsg= "Aborting Svc Socket as is errant or cancelled: " + errorMsg;
UpdateStatus(updateMsg);
stream.Abort();
updateMsg = "Aborted Svc Socket as was errant or cancelled:" + errorMsg;
UpdateStatus(updateMsg);
}
else
{
updateMsg = "Socket closed normally: " + errorMsg;
UpdateStatus(updateMsg);
}
stream = null;
}
else
{
updateMsg = "Socket closed Normally: " + errorMsg;
UpdateStatus(updateMsg);
}
deviceStream_Svc = null;
MsgOutWaitHandle = null;
cancellationTokenSourceTimeout = null;
}
}
public static string EventData_ToString(EventData eventData)
{
string response = "";
if (eventData == null)
{
response = "Null";
}
else
{
string data = "";
if (eventData.Body != null)
{
data = Encoding.UTF8.GetString(eventData.Body.Array);
}
response += string.Format("Message received on partition {0}:\r\n", 0);
//response += string.Format("\r\n {0}:", data);
Azure_IoTHub_Sensors.TelemetryDataPoint telemetryDataPoint =
Azure_IoTHub_Sensors.TelemetryDataPoint.Deserialize(data);
if (telemetryDataPoint == null)
{
return(response);
}
if (!string.IsNullOrEmpty(telemetryDataPoint.city))
{
response += string.Format("City: {0}", telemetryDataPoint.city);
}
if (telemetryDataPoint.temperature != -123456)
{
response += string.Format("\r\nTemperature: {0} C", telemetryDataPoint.temperature);
}
if (!(telemetryDataPoint.humidity < 0))
{
response += string.Format("\r\nHumidity: {0}%", telemetryDataPoint.humidity);
}
if (!(telemetryDataPoint.pressure < 0))
{
response += string.Format("\r\nPressure: {0}", telemetryDataPoint.pressure);
}
if (eventData.Properties != null)
{
if (eventData.Properties.Count != 0)
{
response += string.Format("\r\nApplication properties (set by device):");
foreach (var prop in eventData.Properties)
{
response += string.Format("\r\n {0}: {1}", prop.Key, prop.Value);
}
}
}
if (eventData.SystemProperties != null)
{
if (eventData.SystemProperties.Count != 0)
{
response += string.Format("\r\nSystem properties (set by IoT Hub):");
foreach (var prop in eventData.SystemProperties)
{
response += string.Format("\r\n {0}: {1}", prop.Key, prop.Value);
}
}
}
}
return(response);
}
