August 2017
Intermediate to advanced
254 pages
6h 10m
English
Content preview from Azure IoT Development Cookbook
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How to do it...
The following steps will be taken to perform a direct method with an IoT device connected with IoT Hub:
- Invoke this method from the application:
public async Task<CloudToDeviceMethodResult> InvokeDirectMethodOnDevice(string deviceId, ServiceClient serviceClient) { var methodInvocation = new CloudToDeviceMethod("WriteToMessage") { ResponseTimeout = TimeSpan.FromSeconds(300) }; methodInvocation.SetPayloadJson("'1234567890'"); var response = await serviceClient.InvokeDeviceMethodAsync(deviceId, methodInvocation); return response; }
- Direct method execution on the IoT device:
deviceClient = DeviceClient.CreateFromConnectionString("", TransportType.Mqtt); deviceClient.SetMethodHandlerAsync("WriteToMessage", new DeviceSimulator().WriteToMessage, ...