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Azure IoT SDK Developer Documentation

1. Dev machine prerequisites

Before starting development on the Azure IoT SDK for C# you will need to install a few frameworks and tools. Please follow the instructions within devbox_setup.

2. Coding style

Please read and apply our coding style when proposing PRs against the Azure repository.

3. Cloning the repository

git clone https://github.com/Azure/azure-iot-sdk-csharp.git

4. Building the repository

Building the main repository

  • Windows: build.cmd
  • Linux: ./build.sh

For more information on running more complex scenarios (like e2e or stress testing) please add the -h argument to the build command.

Building a single project

During development you can use Visual Studio by loading the azureiot.sln solution. If you are using a different editor, you can use the dotnet CLI to build (in Windows, Linux or OSX). Here are a few commands. For a complete list see the .NET Core CLI tools

  • Build a library csproj: dotnet build
  • Run tests from a test csproj: dotnet test
  • Run an application from a csproj (e.g. a sample): dotnet run

ARM32 builds

Our NuGet-packaged SDK can be used certain ARM32-based devices. Since the .NET SDKs are not available on this platform, you will need to cross-compile your application.

Instructions are available here: https://github.com/dotnet/core/blob/master/samples/RaspberryPiInstructions.md

Xamarin, UWP, Windows IoT

Please follow the devbox-setup "Optional Setup" for Xamarin before trying to build. To build and test, run the following Jenkins script from the root of the repository:

jenkins\windows_csharp_xamarin.cmd

.NET Micro Framework

Please follow the [devbox-setup][devbox_setup.md] "Optional Setup" for .NET Micro Framework before trying to build. To build and test, run the following Jenkins script from the root of the repository:

jenkins\windows_csharp_mf.cmd

5. Testing

Testing using binaries

Before being able to run our tests, please make sure you read, modify if necessary and run the scripts within the /test/prerequisites folders. (e.g. e2e/test/prerequisites and iothub/service/test/prerequisites).

The CI system will run the jenkins scripts from the root folder. (e.g. jenkins\windows_csharp.cmd).

Testing requires an Azure subscription and IoT Hub and Provisioning services.

Testing NuGet packages

The build command will always try to produce packages and place them within bin\pkg. Please see build -h for instructions on how to set up a local NuGet source and run the e2e tests against the packages instead of the .dll binaries.

6. SDK folder structure

/doc

Contains development instructions for building and changing the Azure IoT SDK for C#.

If you would like to develop an application using the Azure IoT SDK for C# (using pre-built binaries), please follow the dev-guide here: https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-sdks

/iothub/device

Contains the IoT Hub Device SDK source, unit-tests and samples. This produces the Microsoft.Azure.Devices.Client NuGet package.

The src.NetMF folder contains the .NET Microframework port.

/iothub/service

Contains the IoT Hub Service SDK source, unit-tests and samples. This produces the Microsoft.Azure.Devices NuGet package.

/provisioning/device

Contains the Provisioning Device SDK source, unit-tests and samples. This produces the Microsoft.Azure.Devices.Provisioning.Client NuGet package.

/provisioning/device/transport

Contains the Provisioning Device SDK transport libraries source and unit-tests. /http produces the Microsoft.Azure.Devices.Provisioning.Transport.Http NuGet package. /amqp produces the Microsoft.Azure.Devices.Provisioning.Transport.Amqp NuGet package. /mqtt produces the Microsoft.Azure.Devices.Provisioning.Transport.Mqtt NuGet package.

/provisioning/service

Contains the Provisioning Service SDK source, unit-tests and samples. This produces the Microsoft.Azure.Devices.Provisioning.Service NuGet package.

/security

Contains the SecurityProvider components for Hardware Security Modules. /tpm produces the Microsoft.Azure.Devices.Provisioning.Security.Tpm NuGet package.

/shared

This contains public API shared across the SDK components. This produces the Microsoft.Azure.Devices.Shared NuGet package.

/common

Contains common code shared between multiple components. This doesn't generate a separate library and instead may get built-in more than one library.

/e2e

/test contains end-to-end tests run before each PR integration by our internal CI system. /stress contains SDK stress-test applications.

/jenkins

Contains scripts used by our internal Continuous Integration system (Jenkins).

/tools

/DeviceExplorer contains the source code for the Azure IoT Device Explorer tool. Please see further dev documentation within this folder on how to build and debug.

/CaptureLogs contains scripts for capturing SDK traces.