/// <summary>
/// Invokes a method on the device.
/// </summary>
/// <param name="deviceId">Unique identifier of the device to be updated.</param>
public async Task InvokeMethodOnDeviceAsync(string deviceId)
{
SampleLogger.PrintHeader("INVOKE REBOOT METHOD ON A DEVICE");
try
{
#region Snippet:IotInvokeMethodOnDevice
var request = new CloudToDeviceMethodRequest
{
MethodName = "reboot",
};
CloudToDeviceMethodResponse response = (await IoTHubServiceClient.Devices
.InvokeMethodAsync(deviceId, request)
.ConfigureAwait(false))
.Value;
SampleLogger.PrintSuccess($"\t- Method 'REBOOT' invoked on device {deviceId}");
SampleLogger.PrintHeader($"Status of method invocation is: {response.Status}");
#endregion Snippet:IotInvokeMethodOnDevice
}
catch (Exception ex)
{
// Try to cleanup before exiting with fatal error.
await CleanupHelper.DeleteAllDevicesInHubAsync(IoTHubServiceClient);
SampleLogger.FatalError($"Failed to invoke method on device due to:\n{ex.Message}");
throw;
}
}
public async Task <Response <CloudToDeviceMethodResponse> > InvokeDeviceMethodAsync(string deviceId, CloudToDeviceMethodRequest directMethodRequest, CancellationToken cancellationToken = default)
{
if (deviceId == null)
{
throw new ArgumentNullException(nameof(deviceId));
}
if (directMethodRequest == null)
{
throw new ArgumentNullException(nameof(directMethodRequest));
}
using var message = CreateInvokeDeviceMethodRequest(deviceId, directMethodRequest);
await _pipeline.SendAsync(message, cancellationToken).ConfigureAwait(false);
switch (message.Response.Status)
{
case 200:
{
CloudToDeviceMethodResponse value = default;
using var document = await JsonDocument.ParseAsync(message.Response.ContentStream, default, cancellationToken).ConfigureAwait(false);
if (document.RootElement.ValueKind == JsonValueKind.Null)
{
value = null;
}
else
{
value = CloudToDeviceMethodResponse.DeserializeCloudToDeviceMethodResponse(document.RootElement);
}
return(Response.FromValue(value, message.Response));
}
