Azure-iot-sdk-csharp: Running Microsoft.Azure.Devices in Azure Function

[jsturtevant]

When setting up and Azure Function (C#) for Register Devices with IoT Hub I get the following error when running:

RegistryManager manager = RegistryManager.CreateFromConnectionString(connectionString);

Exception while executing function: Functions.registerdevice. Microsoft.Azure.Devices: Could not load file or assembly 'Microsoft.Azure.Amqp, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

project.json:

{
    "frameworks": {
        "net46": {
            "dependencies": {
                "Microsoft.Azure.Devices": "1.2.3"
            }
        }
    }
}

[olivierbloch]

Hi @jsturtevant
That sounds like an issue with Functions...
I have tried the below on an older instance of Functions that I had deployed some time ago and had similar issues when running, error saying that it couldn't find Microsoft.Azure.Devices.Shared.
I created a brand new Function service instance and created a new csharp function and didn't have the issue anymore.
I have used the exactly same project.json as yours.
The code in my function looks like this:

    var connectionString = "HostName=XXX.azure-devices.net;SharedAccessKeyName=iothubowner;SharedAccessKey=XXX=";

    try {
        RegistryManager registryManager = RegistryManager.CreateFromConnectionString(connectionString);
        registryManager.AddDeviceAsync(new Device("new_device"));
    } catch (Exception e)
    {
        log.Info($"Exception thrown: {e.Message}");
    }

Hope this helps

[jsturtevant]

I believe it was Functions. I re-ran my function today with no changes and it worked. Thanks for the help.

[programmersommer]

Hi!
I have same issue. And previously it was helped to me adding new dependency:

{
  "frameworks": {
  "net46":{
    "dependencies": {
      "Microsoft.Azure.Devices": "1.4.1",
      "Microsoft.Azure.Amqp":"2.0.0.0"
      }
    }
  }
}

But now everything works without Amqp in dependencies

[CIPop]

Thanks for adding this @programmersommer !
I thought I've fixed the nuspec dependencies for the service SDK. Is the Amqp reference required?

[programmersommer]

@CIPop, Seems not anymore. Thank you for fixing