[Bug Report] ModuleClient.CreateFromEnvironmentAsync throws an error running inside a .Net 5 ASP.NET Core app

[shaeussler]

Context

• OS, version, SKU and CPU architecture used: Windows 10 1809 Desktop x64
• Application's .NET Target Framework : net5.0
• Device: Azure Win10 1809 VM
• SDK version used: Microsoft.Azure.Devices.Client" Version 1.35.0

Description of the issue

Running a ASP.NET Core app inside Azure IoT Edge:
ModuleClient.CreateFromEnvironmentAsync throws an error running inside a .Net 5 ASP.NET Core app

Code sample exhibiting the issue

   public class Program
   {
      public static async Task Main(string[] args)
      {
         var host = CreateHostBuilder(args).Build();
         var transportSetting = new MqttTransportSettings(TransportType.Mqtt_Tcp_Only);

         ITransportSettings[] ts = { transportSetting };
         var client = await ModuleClient.CreateFromEnvironmentAsync();

         var twin = client.GetTwinAsync().GetAwaiter().GetResult();

         Console.WriteLine($"Twin.Properties.Desired.ToJson : {twin.Properties.Desired.ToJson()}");

         await host.RunAsync();
      }

      public static IHostBuilder CreateHostBuilder(string[] args) =>
          Host.CreateDefaultBuilder(args)
              .ConfigureWebHostDefaults(webBuilder =>
              {
                 webBuilder.UseStartup<Startup>();
              });
   }

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net5.0</TargetFramework>
    <UserSecretsId>ed801301-1e44-4b8f-b1af-149350b5f235</UserSecretsId>
    <DockerDefaultTargetOS>Windows</DockerDefaultTargetOS>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Azure.Devices.Client" Version="1.35.0" />
    <PackageReference Include="Microsoft.VisualStudio.Azure.Containers.Tools.Targets" Version="1.10.9" />
    <PackageReference Include="Swashbuckle.AspNetCore" Version="6.0.7" />
  </ItemGroup>

</Project>

Console log of the issue

Unhandled exception. System.Net.Sockets.SocketException (10014): The system detected an invalid pointer address in attempting to use a pointer argument in a call.
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.CreateException(SocketError error, Boolean forAsyncThrow)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ConnectAsync(Socket socket)
at System.Net.Sockets.Socket.ConnectAsync(EndPoint remoteEP, CancellationToken cancellationToken)
at System.Net.Sockets.Socket.ConnectAsync(EndPoint remoteEP)
at System.Net.Sockets.SocketTaskExtensions.ConnectAsync(Socket socket, EndPoint remoteEP)
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.GetConnectedSocketAsync()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.GetConnectedSocketAsync()
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SendAsync(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationToken cancellationToken)
at Microsoft.Azure.Devices.Client.HsmAuthentication.GeneratedCode.HttpHsmClient.TrustBundleAsync(String api_version, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.HsmAuthentication.GeneratedCode.HttpHsmClient.TrustBundleAsync(String api_version, CancellationToken cancellationToken)
at Microsoft.Azure.Devices.Client.HsmAuthentication.GeneratedCode.HttpHsmClient.TrustBundleAsync(String api_version)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.<>c__DisplayClass3_0.b__0()
at Microsoft.Azure.Devices.Client.TransientFaultHandling.AsyncExecution1.ExecuteAsyncImpl(Task ignore) at Microsoft.Azure.Devices.Client.TransientFaultHandling.AsyncExecution1.ExecuteAsync()
at Microsoft.Azure.Devices.Client.TransientFaultHandling.RetryPolicy.ExecuteAsync[TResult](Func1 taskFunc, CancellationToken cancellationToken) at Microsoft.Azure.Devices.Client.TransientFaultHandling.RetryPolicy.ExecuteAsync[TResult](Func1 taskFunc)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleWithRetryAsync(HttpHsmClient hsmHttpClient, String apiVersion)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleWithRetryAsync(HttpHsmClient hsmHttpClient, String apiVersion)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleAsync(Uri providerUri, String apiVersion)
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleAsync(Uri providerUri, String apiVersion)
at Microsoft.Azure.Devices.Client.Edge.EdgeModuleClientFactory.CreateInternalClientFromEnvironmentAsync()
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at Microsoft.Azure.Devices.Client.Edge.EdgeModuleClientFactory.CreateInternalClientFromEnvironmentAsync()
at Microsoft.Azure.Devices.Client.Edge.EdgeModuleClientFactory.CreateAsync()
at Microsoft.Azure.Devices.Client.ModuleClient.CreateFromEnvironmentAsync(ITransportSettings[] transportSettings, ClientOptions options)
at Microsoft.Azure.Devices.Client.ModuleClient.CreateFromEnvironmentAsync(TransportType transportType, ClientOptions options)
at Microsoft.Azure.Devices.Client.ModuleClient.CreateFromEnvironmentAsync(ClientOptions options)
at WebApplication4.Program.Main(String[] args) in C:\src\WebApplication4\Program.cs:line 24
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine)
at WebApplication4.Program.Main(String[] args)
at WebApplication4.Program.

(String[] args)
--- End of stack trace from previous location ---
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.GetConnectedSocketAsync()
at Microsoft.Azure.Devices.Client.HsmAuthentication.Transport.HttpUdsMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)
at Microsoft.Azure.Devices.Client.HsmAuthentication.GeneratedCode.HttpHsmClient.TrustBundleAsync(String api_version, CancellationToken cancellationToken)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleWithRetryAsync(HttpHsmClient hsmHttpClient, String apiVersion)
at Microsoft.Azure.Devices.Client.Edge.TrustBundleProvider.GetTrustBundleAsync(Uri providerUri, String apiVersion)
at Microsoft.Azure.Devices.Client.Edge.EdgeModuleClientFactory.CreateInternalClientFromEnvironmentAsync()
at WebApplication4.Program.Main(String[] args) in C:\src\WebApplication4\Program.cs:line 24
at WebApplication4.Program.(String[] args)

[barustum]

Hi @shaeussler

While I take a closer look at the issue, can you let me know if you can reproduce the problem with .NET Core 3.1? Trying to identify whether it's a .NET 5.0 specific issue, or whether it happens on different target frameworks.

[shaeussler]

Hi @barustum
I moved a ASP.NET Core project from netcoreapp3.1 to net5.0. The project uses ModuleClient.CreateFromEnvironmentAsync.
With netcoreapp3.1 there is no error. I run the netcoreapp3.1 ASP.NET Core project under Windows 10 1809 and Linux Ubuntu 18.04. Also running the net5.0 ASP.NET Core project under Linux Ubuntu 18.04 shows no error.