public async Task SyncWithTwinAsync(string devicePrimaryConnString)
{
Console.WriteLine("Before reading IoT Hub twin file.");
try
{
// dispose the previous object before creating the new one
deviceClient?.Dispose();
deviceClient = DeviceClient.CreateFromConnectionString(devicePrimaryConnString, TransportType.Mqtt_WebSocket_Only);
var twin = await deviceClient.GetTwinAsync().ConfigureAwait(false);
AvailableDriverSizeInMbThreshold = twin.Properties.Desired[InstrumentNode][AvailableDriverSizeThresholdNode];
Console.WriteLine($"Read value from IoT Hub twin file, AvailableDriverSizeInMbThreshold={AvailableDriverSizeInMbThreshold}.");
}
catch (Exception exception)
{
Console.WriteLine($"Failed to sync with IoT Hub twin, please check the connection string or if there is desired property '{InstrumentNode}/{AvailableDriverSizeThresholdNode}' for the device.");
AvailableDriverSizeInMbThreshold = DefaultAvaialbeDriverSizeThreshold;
}
// register a callback to get the updated value.
if (deviceClient != null)
{
await deviceClient.SetDesiredPropertyUpdateCallbackAsync(OnDesiredPropertyChangedAsync, null).ConfigureAwait(false);
}
}
private async Task DoNotReceiveMessagesSentBeforeSubscriptionAsync(TestDeviceType type, ITransportSettings[] settings)
{
TestDevice testDevice = await TestDevice.GetTestDeviceAsync(Logger, s_devicePrefix, type).ConfigureAwait(false);
DeviceClient deviceClient = testDevice.CreateDeviceClient(settings);
var testDeviceCallbackHandler = new TestDeviceCallbackHandler(deviceClient, testDevice, Logger);
using var serviceClient = ServiceClient.CreateFromConnectionString(Configuration.IoTHub.ConnectionString);
(Message msg, string payload, string p1Value) = ComposeC2dTestMessage(Logger);
// Subscribe to receive C2D messages over the callback.
await testDeviceCallbackHandler.SetMessageReceiveCallbackHandlerAsync().ConfigureAwait(false);
// Now dispose and reinitialize the client instance.
deviceClient.Dispose();
deviceClient = null;
testDeviceCallbackHandler.Dispose();
testDeviceCallbackHandler = null;
deviceClient = testDevice.CreateDeviceClient(settings);
testDeviceCallbackHandler = new TestDeviceCallbackHandler(deviceClient, testDevice, Logger);
// Open the device client - for MQTT, this will connect the device with CleanSession flag set to true.
// This will ensure that messages sent before the device had subscribed to c2d topic are not delivered.
await deviceClient.OpenAsync().ConfigureAwait(false);
// Send the message from service.
Logger.Trace($"Sending C2D message from service, messageId={msg.MessageId}");
await serviceClient.SendAsync(testDevice.Id, msg).ConfigureAwait(false);
// Subscribe to receive C2D messages over the callback.
testDeviceCallbackHandler.ExpectedMessageSentByService = msg;
await testDeviceCallbackHandler.SetMessageReceiveCallbackHandlerAsync().ConfigureAwait(false);
// Wait to ensure that the message was not received.
using var cts = new CancellationTokenSource(s_tenSeconds);
Func <Task> receiveMessageOverCallback = async() =>
{
await testDeviceCallbackHandler.WaitForReceiveMessageCallbackAsync(cts.Token).ConfigureAwait(false);
};
receiveMessageOverCallback.Should().Throw <OperationCanceledException>();
await serviceClient.CloseAsync().ConfigureAwait(false);
deviceClient.Dispose();
testDeviceCallbackHandler.Dispose();
}
private void InitializeClient()
{
// If the client reports Connected status, it is already in operational state.
if (s_connectionStatus != ConnectionStatus.Connected &&
_deviceConnectionStrings.Any())
{
lock (_initLock)
{
_logger.LogDebug($"Attempting to initialize the client instance, current status={s_connectionStatus}");
// If the device client instance has been previously initialized, then dispose it.
// The s_wasEverConnected variable is required to store if the client ever reported Connected status.
if (s_wasEverConnected && s_connectionStatus == ConnectionStatus.Disconnected)
{
_deviceClient?.Dispose();
s_wasEverConnected = false;
}
_deviceClient = DeviceClient.CreateFromConnectionString(_deviceConnectionStrings.First(), TransportType.Mqtt);
_deviceClient.SetConnectionStatusChangesHandler(ConnectionStatusChangeHandler);
_deviceClient.OperationTimeoutInMilliseconds = (uint)s_operationTimeout.TotalMilliseconds;
}
try
{
// Force connection now
_deviceClient.OpenAsync().GetAwaiter().GetResult();
_logger.LogDebug($"Initialized the client instance.");
}
catch (UnauthorizedException)
{
// Handled by the ConnectionStatusChangeHandler
}
}
}
private static async Task Main(string[] args)
{
Console.WriteLine("Starting Simulated device.");
using IHost host = CreateHostBuilder(args).Build();
// Application code should start here.
// Connect to the IoT hub using the MQTT protocol
_deviceClient = DeviceClient.CreateFromConnectionString(_connectionString, _transportType);
// Set up a condition to quit the sample
Console.WriteLine("Press control-C to exit.");
using var cts = new CancellationTokenSource();
Console.CancelKeyPress += (sender, eventArgs) =>
{
eventArgs.Cancel = true;
cts.Cancel();
Console.WriteLine("Exiting...");
};
// Run the telemetry loop
await SendDeviceToCloudMessagesAsync(cts.Token);
_deviceClient.Dispose();
Console.WriteLine("Device simulator finished.");
await host.RunAsync();
}
private static TimeSpan s_telemetryInterval = TimeSpan.FromSeconds(1); // Seconds
private static async Task Main(string[] args)
{
Console.WriteLine("IoT Hub Quickstarts #1 - Simulated device.");
// This sample accepts the device connection string as a parameter, if present
ValidateConnectionString(args);
// Connect to the IoT hub using the MQTT protocol
s_deviceClient = DeviceClient.CreateFromConnectionString(s_connectionString, s_transportType);
// Create a handler for the direct method call
await s_deviceClient.SetMethodHandlerAsync("SetTelemetryInterval", SetTelemetryInterval, null);
// Set up a condition to quit the sample
Console.WriteLine("Press control-C to exit.");
using var cts = new CancellationTokenSource();
Console.CancelKeyPress += (sender, eventArgs) =>
{
eventArgs.Cancel = true;
cts.Cancel();
Console.WriteLine("Exiting...");
};
// Run the telemetry loop
await SendDeviceToCloudMessagesAsync(cts.Token);
s_deviceClient.Dispose();
Console.WriteLine("Device simulator finished.");
}
static async Task DeviceToCloudMessage(string deviceId, string deviceConnectionString, DeviceClient deviceClient)
{
var currentDataValue = 0;
var messageTemplate = setting.Message;
if (string.IsNullOrEmpty(messageTemplate))
{
messageTemplate = "{\"DeviceData\": %value%,\"DeviceUtcDatetime\": \"%datetime%\"}";
}
var stopWatch = Stopwatch.StartNew();
long lastCheckpoint;
long interval = 60000 / setting.MessagePerMin; // in miliseconds
long expectedNumofMessage = setting.MessagePerMin * setting.DurationInMin;
long count = 0;
Random rnd = new Random();
while (stopWatch.Elapsed.TotalMinutes <= setting.DurationInMin)
{
lastCheckpoint = stopWatch.ElapsedMilliseconds;
currentDataValue = rnd.Next(-20, 20);
string messageString = messageTemplate;
messageString = messageString.Replace("%deviceId%", deviceId);
messageString = messageString.Replace("%value%", currentDataValue.ToString());
messageString = messageString.Replace("%datetime%", DateTime.UtcNow.ToString());
var message = new Microsoft.Azure.Devices.Client.Message(Encoding.UTF8.GetBytes(messageString));
for (int i = 0; i < 10; i++)
{
try
{
await deviceClient.SendEventAsync(message);
}
catch (Exception ex)
{
Console.WriteLine($"{stopWatch.Elapsed}: {deviceId} send message failed: {ex}");
await Task.Delay(1000);
deviceClient.Dispose();
deviceClient = DeviceClient.CreateFromConnectionString(deviceConnectionString, transport);
continue;
}
count++;
break;
}
// add 200ms
var delayTime = interval - (stopWatch.ElapsedMilliseconds - lastCheckpoint) - 200;
if (delayTime > 0)
{
await Task.Delay(TimeSpan.FromMilliseconds(delayTime));
}
}
Console.WriteLine($"{stopWatch.Elapsed}: {deviceId} - Finish sending {count} message (expected: {expectedNumofMessage})");
}
void Setup()
{
try
{
if (!IsConnected)
{
if (s_deviceClient != null)
{
s_deviceClient.Dispose();
}
// Connect to the IoT hub using the MQTT protocol
s_deviceClient = DeviceClient.CreateFromConnectionString(s_connectionString, TransportType.Mqtt);
s_deviceClient.SetMethodHandlerAsync("DoAction", DoAction, null).Wait();
//SendDeviceToCloudMessagesAsync();
display.SetBacklightRgb(0, 200, 100);
display.SetText("Device is Ready");
IsConnected = true;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message + "_" + ex.StackTrace);
}
}
private static async Task SendDeviceToCloudMessagesAsync(DeviceConfiguration device, CancellationToken ct)
{
DeviceClient deviceClient = null;
if (!string.IsNullOrWhiteSpace(device.ConnectionString))
{
var cs = IotHubConnectionStringBuilder.Create(device.ConnectionString);
deviceClient = DeviceClient.CreateFromConnectionString(cs.ToString(), TransportType.Mqtt);
}
var temperatureGenerator = TelemetryGeneratorFactory.Create(device.TemperatureGenerator);
var humidityGenerator = TelemetryGeneratorFactory.Create(device.HumidityGenerator);
var startupDelay = rand.Next(0, 10000);
await Task.Delay(startupDelay, ct);
while (!ct.IsCancellationRequested)
{
var telemetry = new DeviceTelemetry()
{
DeviceId = device.Id,
DeviceName = device.Name,
Timestamp = DateTimeOffset.Now,
Data = new DeviceData()
{
Humidity = await humidityGenerator.GenerateNextValueAsync(ct),
Temperature = await temperatureGenerator.GenerateNextValueAsync(ct)
}
};
string messageBody = JsonSerializer.Serialize(telemetry);
using var message = new Message(Encoding.ASCII.GetBytes(messageBody))
{
ContentType = "application/json",
ContentEncoding = "utf-8",
};
// Send the telemetry message (if the connectionstring for device is configured)
if (deviceClient != null)
{
await deviceClient.SendEventAsync(message);
}
Console.WriteLine($"{DateTime.Now} > Sending message: {messageBody}");
try
{
await Task.Delay(device.PollingIntervalInSec * 1000, ct);
}
catch (TaskCanceledException)
{
break;
}
}
if (deviceClient != null)
{
deviceClient.Dispose();
}
}
public void Dispose()
{
if (deviceClient != null)
{
try { deviceClient.Dispose(); } catch (Exception ex) { Console.WriteLine($"Device Client disposing error: {ex.Message}"); }
}
}
public void Dispose()
{
if (udpClient != null)
{
if (udpClient.Client != null && udpClient.Client.Connected)
{
try { udpClient.Client.Disconnect(false); } catch (Exception ex) { Console.WriteLine($"Udp Client socket disconnecting error: {ex.Message}"); }
try { udpClient.Client.Close(); } catch (Exception ex) { Console.WriteLine($"Udp Client socket closing error: {ex.Message}"); }
try { udpClient.Client.Dispose(); } catch (Exception ex) { Console.WriteLine($"Udp Client socket disposing error: {ex.Message}"); }
}
try { udpClient.Close(); } catch (Exception ex) { Console.WriteLine($"Udp Client closing error: {ex.Message}"); }
try { udpClient.Dispose(); } catch (Exception ex) { Console.WriteLine($"Udp Client disposing error: {ex.Message}"); }
}
if (ioTHubModuleClient != null)
{
try { ioTHubModuleClient.CloseAsync().Wait(); } catch (Exception ex) { Console.WriteLine($"IoTHub Module Client closing error: {ex.Message}"); }
try { ioTHubModuleClient.Dispose(); } catch (Exception ex) { Console.WriteLine($"IoTHub Module Client disposing error: {ex.Message}"); }
}
if (messageProcessor != null)
{
try { messageProcessor.Dispose(); } catch (Exception ex) { Console.WriteLine($"Message Processor disposing error: {ex.Message}"); }
}
}
public Task <bool> Stop()
{
bool returnValue = false;
try
{
// ***
// *** Unsubscribe from the events
// ***
if (_temperatureChangedEventToken != null)
{
this.EventAggregator.GetEvent <Events.TemperatureChangedEvent>().Unsubscribe(_temperatureChangedEventToken);
_temperatureChangedEventToken.Dispose();
_temperatureChangedEventToken = null;
}
// ***
// *** Dispose the device client instance.
// ***
if (_deviceClient != null)
{
_deviceClient.Dispose();
_deviceClient = null;
}
returnValue = true;
}
catch (Exception ex)
{
this.EventAggregator.GetEvent <Events.DebugEvent>().Publish(new DebugEventArgs(ex));
returnValue = false;
}
return(Task <bool> .FromResult(returnValue));
}
public static async Task DisconnectFromIoTHub()
{
// Azure IoT Hub connection
await _deviceClient.CloseAsync().ConfigureAwait(true);
_deviceClient.Dispose();
}
private async Task ReuseAuthenticationMethod_SingleDevice(Client.TransportType transport)
{
TestDevice testDevice = await TestDevice.GetTestDeviceAsync(Logger, _devicePrefix).ConfigureAwait(false);
var authenticationMethod = new DeviceAuthenticationSasToken(testDevice.ConnectionString, disposeWithClient: false);
// Create an instance of the device client, send a test message and then close and dispose it.
DeviceClient deviceClient = DeviceClient.Create(testDevice.IoTHubHostName, authenticationMethod, transport);
using var message1 = new Client.Message();
await deviceClient.SendEventAsync(message1).ConfigureAwait(false);
await deviceClient.CloseAsync();
deviceClient.Dispose();
Logger.Trace("Test with instance 1 completed");
// Perform the same steps again, reusing the previously created authentication method instance to ensure
// that the sdk did not dispose the user supplied authentication method instance.
DeviceClient deviceClient2 = DeviceClient.Create(testDevice.IoTHubHostName, authenticationMethod, transport);
using var message2 = new Client.Message();
await deviceClient2.SendEventAsync(message2).ConfigureAwait(false);
await deviceClient2.CloseAsync();
deviceClient2.Dispose();
Logger.Trace("Test with instance 2 completed, reused the previously created authentication method instance for the device client.");
authenticationMethod.Dispose();
}
private async Task AuthenticationMethodDisposesTokenRefresher(Client.TransportType transport)
{
TestDevice testDevice = await TestDevice.GetTestDeviceAsync(Logger, _devicePrefix).ConfigureAwait(false);
var authenticationMethod = new DeviceAuthenticationSasToken(testDevice.ConnectionString, disposeWithClient: true);
// Create an instance of the device client, send a test message and then close and dispose it.
DeviceClient deviceClient = DeviceClient.Create(testDevice.IoTHubHostName, authenticationMethod, transport);
using var message1 = new Client.Message();
await deviceClient.SendEventAsync(message1).ConfigureAwait(false);
await deviceClient.CloseAsync();
deviceClient.Dispose();
Logger.Trace("Test with instance 1 completed");
// Perform the same steps again, reusing the previously created authentication method instance.
// Since the default behavior is to dispose AuthenticationWithTokenRefresh authentication method on DeviceClient disposal,
// this should now throw an ObjectDisposedException.
DeviceClient deviceClient2 = DeviceClient.Create(testDevice.IoTHubHostName, authenticationMethod, transport);
using var message2 = new Client.Message();
Func <Task> act = async() => await deviceClient2.SendEventAsync(message2).ConfigureAwait(false);
await act.Should().ThrowAsync <ObjectDisposedException>();
}
static void Setup()
{
try
{
if (!IsConnected)
{
if (s_deviceClient != null)
{
s_deviceClient.Dispose();
}
var ConStr = ConfigurationManager.AppSettings["DeviceConStr"];
// Connect to the IoT hub using the MQTT protocol
s_deviceClient = DeviceClient.CreateFromConnectionString(ConStr, Microsoft.Azure.Devices.Client.TransportType.Mqtt);
s_deviceClient.SetMethodHandlerAsync("DoAction", DoAction, null).Wait();
//SendDeviceToCloudMessagesAsync();
IsConnected = true;
}
}
catch
{
}
}
private static async Task Main(string[] args)
{
Console.WriteLine("IoT Hub Quickstarts #1 - Simulated device.");
// This sample accepts the device connection string as a parameter, if present
ValidateConnectionString(args);
// Connect to the IoT hub using the MQTT protocol
s_deviceClient = DeviceClient.CreateFromConnectionString(s_connectionString, s_transportType);
// Set up a condition to quit the sample
Console.WriteLine("Press control-C to exit.");
using var cts = new CancellationTokenSource();
Console.CancelKeyPress += (sender, eventArgs) =>
{
eventArgs.Cancel = true;
cts.Cancel();
Console.WriteLine("Exiting...");
};
// Run the telemetry loop
await SendDeviceToCloudMessagesAsync(cts.Token);
// SendDeviceToCloudMessagesAsync is designed to run until cancellation has been explicitly requested by Console.CancelKeyPress.
// As a result, by the time the control reaches the call to close the device client, the cancellation token source would
// have already had cancellation requested.
// Hence, if you want to pass a cancellation token to any subsequent calls, a new token needs to be generated.
// For device client APIs, you can also call them without a cancellation token, which will set a default
// cancellation timeout of 4 minutes: https://github.com/Azure/azure-iot-sdk-csharp/blob/64f6e9f24371bc40ab3ec7a8b8accbfb537f0fe1/iothub/device/src/InternalClient.cs#L1922
await s_deviceClient.CloseAsync();
s_deviceClient.Dispose();
Console.WriteLine("Device simulator finished.");
}
private async Task InitializeAndSetupClientAsync(CancellationToken cancellationToken)
{
if (ShouldClientBeInitialized(s_connectionStatus))
{
// Allow a single thread to dispose and initialize the client instance.
await _initSemaphore.WaitAsync(cancellationToken);
try
{
if (ShouldClientBeInitialized(s_connectionStatus))
{
_logger.LogDebug($"Attempting to initialize the client instance, current status={s_connectionStatus}");
// If the device client instance has been previously initialized, close and dispose it.
if (s_deviceClient != null)
{
try
{
await s_deviceClient.CloseAsync(cancellationToken);
}
catch (UnauthorizedException) { } // if the previous token is now invalid, this call may fail
s_deviceClient.Dispose();
}
s_deviceClient = DeviceClient.CreateFromConnectionString(_deviceConnectionStrings.First(), _transportType, _clientOptions);
s_deviceClient.SetConnectionStatusChangesHandler(ConnectionStatusChangeHandler);
_logger.LogDebug("Initialized the client instance.");
}
}
finally
{
_initSemaphore.Release();
}
// Force connection now.
// We have set the "shouldExecuteOperation" function to always try to open the connection.
// OpenAsync() is an idempotent call, it has the same effect if called once or multiple times on the same client.
await RetryOperationHelper.RetryTransientExceptionsAsync(
operationName : "OpenConnection",
asyncOperation : async() => await s_deviceClient.OpenAsync(cancellationToken),
shouldExecuteOperation : () => true,
logger : _logger,
exceptionsToBeIgnored : _exceptionsToBeIgnored,
cancellationToken : cancellationToken);
_logger.LogDebug($"The client instance has been opened.");
// You will need to subscribe to the client callbacks any time the client is initialized.
await RetryOperationHelper.RetryTransientExceptionsAsync(
operationName : "SubscribeTwinUpdates",
asyncOperation : async() => await s_deviceClient.SetDesiredPropertyUpdateCallbackAsync(HandleTwinUpdateNotificationsAsync, cancellationToken),
shouldExecuteOperation : () => IsDeviceConnected,
logger : _logger,
exceptionsToBeIgnored : _exceptionsToBeIgnored,
cancellationToken : cancellationToken);
_logger.LogDebug("The client has subscribed to desired property update notifications.");
}
}
public void Disconnect()
{
stopPublishData();
s_deviceClient.Dispose();
view.ConnectStatusLabel = "Disconnected";
view.PublishMessageText = "Azure IoT Hub Disconnected";
s_deviceClient = null;
}
private void DeviceSimulatorForm_FormClosing(object sender, FormClosingEventArgs e)
{
if (deviceClient != null)
{
deviceClient.Dispose();
deviceClient = null;
}
}
public async void stop()
{
((MainWindow)System.Windows.Application.Current.MainWindow).list.IsEnabled = true;
kill = true;
worker.Dispose();
await deviceClient.CloseAsync();
deviceClient.Dispose();
}
public async Task DisconnectAsync()
{
switch (Model.DefaultTransport.Value)
{
/*case TransportTypes.AMQP:
* ConnectButtonVisible = true;
* break;*/
case TransportTypes.AzureIoTHub:
#if IOTHUB
if (_azureIoTHubClient != null)
{
await _azureIoTHubClient.CloseAsync();
_azureIoTHubClient.Dispose();
_azureIoTHubClient = null;
}
#endif
ConnectButtonVisible = true;
break;
case TransportTypes.MQTT:
if (_mqttClient != null)
{
_mqttClient.Disconnect();
_mqttClient = null;
}
ConnectButtonVisible = true;
break;
case TransportTypes.TCP:
if (_tcpClient != null)
{
await _tcpClient.DisconnectAsync();
_tcpClient.Dispose();
}
ConnectButtonVisible = true;
break;
case TransportTypes.UDP:
if (_udpClient != null)
{
await _udpClient.DisconnectAsync();
_udpClient.Dispose();
}
ConnectButtonVisible = true;
break;
}
SetDisconnectedState();;
RightMenuIcon = Client.Core.ViewModels.RightMenuIcon.None;
}
public async Task Dispose()
{
if (client != null)
{
await client.CloseAsync();
client?.Dispose();
}
}
public void Dispose()
{
if (_deviceClient != null)
{
_deviceClient.Dispose();
_deviceClient = null;
Connected = false;
}
}
private async Task ReceiveMessagesSentBeforeSubscriptionAsync(TestDeviceType type, Client.TransportType transport)
{
TestDevice testDevice = await TestDevice.GetTestDeviceAsync(Logger, s_devicePrefix, type).ConfigureAwait(false);
DeviceClient deviceClient = testDevice.CreateDeviceClient(transport);
var testDeviceCallbackHandler = new TestDeviceCallbackHandler(deviceClient, testDevice, Logger);
using var serviceClient = ServiceClient.CreateFromConnectionString(Configuration.IoTHub.ConnectionString);
(Message msg, string payload, string p1Value) = ComposeC2dTestMessage(Logger);
// Subscribe to receive C2D messages over the callback.
await testDeviceCallbackHandler.SetMessageReceiveCallbackHandlerAsync().ConfigureAwait(false);
// Now dispose and reinitialize the client instance.
deviceClient.Dispose();
deviceClient = null;
testDeviceCallbackHandler.Dispose();
testDeviceCallbackHandler = null;
deviceClient = testDevice.CreateDeviceClient(transport);
testDeviceCallbackHandler = new TestDeviceCallbackHandler(deviceClient, testDevice, Logger);
// Open the device client - for MQTT, this will connect the device with CleanSession flag set to false.
await deviceClient.OpenAsync().ConfigureAwait(false);
// Send the message from service.
Logger.Trace($"Sending C2D message from service, messageId={msg.MessageId}");
await serviceClient.SendAsync(testDevice.Id, msg).ConfigureAwait(false);
// Subscribe to receive C2D messages over the callback.
testDeviceCallbackHandler.ExpectedMessageSentByService = msg;
await testDeviceCallbackHandler.SetMessageReceiveCallbackHandlerAsync().ConfigureAwait(false);
// Wait to ensure that the message was received.
using var cts = new CancellationTokenSource(s_tenSeconds);
await testDeviceCallbackHandler.WaitForReceiveMessageCallbackAsync(cts.Token).ConfigureAwait(false);
await serviceClient.CloseAsync().ConfigureAwait(false);
deviceClient.Dispose();
testDeviceCallbackHandler.Dispose();
}
public async void SendTelemetry()
{
bool run = true;
while (run)
{
try
{
litersInTank = litersInTank < 0.5 ? 15.0 : litersInTank - 0.1;
var vehicleData = new VehicleData()
{
LitersInTank = litersInTank,
AvgSpeed = random.NextDouble() + 15 * 2,
Timestamp = DateTime.Now.ToString()
};
var jsonPayload = JsonConvert.SerializeObject(vehicleData);
var message = new Message(Encoding.UTF8.GetBytes(jsonPayload));
await deviceClient.SendEventAsync(message);
Console.WriteLine("Send: " + jsonPayload);
}
catch (System.Exception ex)
{
try
{
await deviceClient.CloseAsync();
deviceClient.Dispose();
}
catch (System.Exception deviceException)
{
Console.WriteLine(deviceException.Message);
}
await InitDevice();
run = false;
Console.WriteLine(ex.Message);
}
await Task.Delay(10000);
}
}
public async Task Dispose()
{
cancelationTokenSource.Cancel();
if (client != null)
{
await client.CloseAsync();
client?.Dispose();
deviceSemaphore?.Dispose();
}
}
private void DeviceSimulatorForm_FormClosing(object sender, FormClosingEventArgs e)
{
sendLoopChecked = false;
receiveLoopChecked = false;
Thread.Sleep(500);
if (deviceClient != null)
{
deviceClient.Dispose();
deviceClient = null;
}
}
/// <summary>
/// Dispose method.
/// </summary>
public void Dispose()
{
// Dispose the connection with Azure IoT Hub.
_deviceClient?.Dispose();
_deviceClient = null;
// Dispose the Raspberry Pi controller.
_gpioController?.Dispose();
_gpioController = null;
// Dispose temperature sensor.
_temperatureSensor?.Dispose();
_temperatureSensor = null;
}
public async Task <bool> DisconnectAsync()
{
if (_deviceClient != null)
{
await _deviceClient.CloseAsync();
_deviceClient.Dispose();
_deviceClient = null;
}
return(true);
}
public async Task Method_ServiceInvokeDeviceMethodWithNullPayload_DoesNotThrow()
{
// arrange
DeviceClient deviceClient = null;
TestDevice testDevice = await TestDevice.GetTestDeviceAsync(Logger, "NullMethodPayloadTest").ConfigureAwait(false);
try
{
const string commandName = "Reboot";
bool deviceMethodCalledSuccessfully = false;
deviceClient = testDevice.CreateDeviceClient(Client.TransportType.Mqtt);
await deviceClient.OpenAsync().ConfigureAwait(false);
await deviceClient
.SetMethodDefaultHandlerAsync(
(methodRequest, userContext) =>
{
methodRequest.Name.Should().Be(commandName);
deviceMethodCalledSuccessfully = true;
return(Task.FromResult(new MethodResponse(200)));
},
null)
.ConfigureAwait(false);
using var serviceClient = ServiceClient.CreateFromConnectionString(TestConfiguration.IoTHub.ConnectionString);
CloudToDeviceMethod c2dMethod = new CloudToDeviceMethod(commandName, TimeSpan.FromMinutes(1), TimeSpan.FromMinutes(1)).SetPayloadJson(null);
// act
CloudToDeviceMethodResult result = await serviceClient.InvokeDeviceMethodAsync(testDevice.Id, c2dMethod).ConfigureAwait(false);
// assert
deviceMethodCalledSuccessfully.Should().BeTrue();
}
finally
{
// clean up
await deviceClient.SetMethodDefaultHandlerAsync(null, null).ConfigureAwait(false);
await deviceClient.CloseAsync().ConfigureAwait(false);
deviceClient.Dispose();
await testDevice.RemoveDeviceAsync().ConfigureAwait(false);
}
}