sdk-csharp | CSharp SDK for CloudEvents | SDK library

Describe the bug

DeviceClient SetMethodDefaultHandlerAsync handler is not triggered on internet disconnection instantly. It triggers after 15 to 20 minutes. Below are the logs

IoT Hub connection status Changed Status: Connected Reason: Connection_Ok Time: 3:09:15 PM +02 IoT Hub connection status Changed Status: Disconnected_Retrying Reason: Communication_Error Time: 3:26:29 PM +02

I disconnected the internet at 3:10:00 PM +02 and communication error was thrown after 16 minutes. I have created a sample code which reproduces the issue

Steps to reproduce

We want to use yandex disk api. Users can upload and delete files using the yandex disk.

I think getting a token from a login page. I tried a lot of sdk but I couldn't find the sample code working properly.

Could you help? i use https://github.com/yandex-disk/yandex-disk-sdk-csharp sdk

but sdk is WPF i use winform

I have a MQTT client which publish data (topic) to "AWS IOT" and "Azure IOT HUB".

To see the data into "Azure IOT HUB", I am using "DeviceExplorer": https://github.com/Azure/azure-iot-sdk-csharp/tree/master/tools/DeviceExplorer

I want to know?

I am using preview version (v1.27.0-preview-003) of Azure IoT SDK. It supports establishing parent child relationship between IoT edge and IoT leaf device. The device object has Scope property. If Scope value of edge device is assigned to leaf device, it becomes the child of edge device. Here's the test case for that.

I am using the Azure Device SDK for .NET Core in order to connect my devices to Azure IoT Hub. From time to time the server rejects some messages (like twin updates or telemetry messages) from the devices and responds with status code 400. As a result there are exceptions thrown on client side but due to its asynchronous nature they are swallowed somewhere inside the Azure SDK and never thrown at my code.

How can I actually be notified about these errors so I can handle and display them?

I can also see from the Azure Device SDK code that it uses some kind of logging (EventSource) but this is never enabled in the code:

Microsoft has its own SDK for interacting with IoT Hub (Microsoft.Azure.Devices) It features a client called ServiceClient that as I understand it is client you are supposed to use when sending messages from your backend to a device through IoT hub.

When initializing the ServiceClient like below the only supported TransportTypes are Amqp and Amqp_websockets_only. My devices only support MQTT. How should I go about that?

public async Task SendMessage() { var serviceClient = ServiceClient.CreateFromConnectionString("", TransportType.Amqp); var commandMessage = new Message(Encoding.ASCII.GetBytes("Cloud to device message.")); await serviceClient.SendAsync("myFirstDevice", commandMessage); }

According to the c2d guidelines "all protocols" are supported.

I have read through this documentation, but it only documents device to cloud, not cloud to device.

Looking at the SDK documentation it only lists AMQP for key features under device-to-cloud

I have a Web API that's hosted in Azure, and I have continuous deployment set up from a GitHub repository.

There's some functionality I need to implement that relies on a third-party DLL, so I added it as a reference to my project. Everything works fine locally, but when I commit my changes with the new DLL, the deployment fails in Azure with this message:

error CS0246: The type or namespace name 'MyReference' could not be found (are you missing a using directive or an assembly reference?)

If I open my .csproj file, this is how the reference is added, so maybe there's an issue there:

I submitted UpdateReportedPropertiesAsync doesn't update the Device Twin timestamps in azure-iot-sdk-csharp's github, but I wonder if maybe I just don't know something and I decided to ask here as well.

Is there documentation explaining when IoT Hub Device Twin's statusUpdateTime, connectionState, and lastActivityTime are updated?

My problem:

I have a device that periodically updates reported properties using DeviceClient's UpdateReportedPropertiesAsync but the timestamps stay empty:

I am trying to generate a valid SAS token (shared access signatures) to connect to the Azure IoT Hub, but I keep getting the error Connection refused: Not authorized when using the token.

I know the way I am connecting is working because when using a SAS token generated with the Microsoft Device Explorer (https://github.com/Azure/azure-iot-sdk-csharp/tree/master/tools/DeviceExplorer) it works as expected.

To write the Javascript code I started from this documentation https://docs.microsoft.com/en-us/azure/storage/common/storage-dotnet-shared-access-signature-part-1 comparing with some working implementations:

• in Python: https://github.com/Azure/azure-sdk-for-python/blob/master/azure-servicebus/azure/servicebus/servicebusservice.py
• in Go/Golang: https://github.com/openenergi/go-event-hub/blob/master/msauth/sasl.go

What am I doing wrong in the following Javascript implementation? I think it may be related to the SHA256 signature combined with URL escaping the string but I am not sure how to test/verify this.