Device twin routing demo

This repository contains the code of a simulated device interacting with an Azure IoT Hub.
It has been built for a blog post I have written on IoT Hub message routing for device twin change events.

How to get started with this ?

To run this on your machine follow this steps:

1. Install the .NET 5 SDK if you don't already have it
2. Create an Azure IoT Hub on your subscription in the Free or Standard Tier
3. Create a device in your hub, with SAS authentication, and copy it connection string
4. Clone the repo, go in the src/DeviceClientApp folder and set the connection string with the following command: dotnet user-secrets set "DeviceConnectionString" "<YOUR-DEVICE-CONNECTION-STRING>"
5. You're ready to launch it using the dotnet run command !

What does it do ?

The first time the program is run for a device, it should give the following output:

$ dotnet run
DeviceClient created ! Getting current twin...
First time with this device, let's initialize it !
Done ! Exiting now...

This first run creates two reported properties:

• propertyUsedOnlyOnce which will never be used again 😔
• color set to Red

The next runs of the tool will change the value of the color property to Blue, then back to Red, then back to Blue, and so on...
But why ? Well, it's just for a demo, read the blog post to find out more !