MissingMethodException System.Net.Http.SocketsHttpHandler.get_MeterFactory() with 2.1.0-beta2 on .NET 8.0

[kaspermarstal]

Service

OpenAI

Describe the bug

The explicit dependency on System.Diagnostic.DiagnosticSource results in System.Diagnostic.DiagnosticSource.dll being copied to build directory. When the program is started, two such dlls are loaded on my machine, one from build directory and one from system directory, and I get a MissingMethodException:

'EXCEL.EXE' (CoreCLR: clr_libhost): Loaded 'C:\Users\kaspe\source\repos\cellm\src\Cellm\bin\Debug\net8.0-windows\System.Diagnostics.DiagnosticSource.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'EXCEL.EXE' (CoreCLR: clr_libhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Diagnostics.DiagnosticSource.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
ExcelDna.Integration Error: 1 : DnaLibrary AutoOpen Invoke Error : MissingMethodException - Method not found: 'System.Diagnostics.Metrics.IMeterFactory System.Net.Http.SocketsHttpHandler.get_MeterFactory()'.

A workaround is to explicitly exclude this dependency from being copied to the build directory in my own csproj file:

    <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="9.0.0" >
      <ExcludeAssets>runtime</ExcludeAssets>
    </PackageReference>

This results in only the C:\Program Files\dotnet\shared\Microsoft.NETCore.App\9.0.0\System.Diagnostics.DiagnosticSource.dll being loaded and the program works fine.

Steps to reproduce

1. Create a project
2. Set net8.0-windows
3. Add will depends on OpenAI 2.1.0-beta2
4. Build and run

Code snippets

No response

OS

win

.NET version

8.0

Library version

2.1.0-beta2

[kbiasci-centrix]

I have the same issue with .Net 8 when trying to run
HttpClient CreateClient(this IHttpClientFactory factory);
Result is:
Method not found: 'System.Diagnostics.Metrics.IMeterFactory System.Net.Http.HttpClientHandler.get_MeterFactory()'
But it's NOT only related to openAI, it's linked to .Net

[edmd]

@kbiasci-centrix i've been experiencing this same issue with this exact method in a .net 8 lambda. How have you worked around this?

[kbiasci-centrix]

@kbiasci-centrix i've been experiencing this same issue with this exact method in a .net 8 lambda. How have you worked around this?

It is also related to a Lambda function project who suddenly started to fail locally on my side.
I tried to create a new HTTPClient via:

var client = httpClientFactory.CreateClient();

and the error I had was:

Method not found: 'System.Diagnostics.Metrics.IMeterFactory System.Net.Http.HttpClientHandler.get_MeterFactory()

To fix it, I used the workaround suggested above, I have modified the project file and added the "System.Diagnostics.DiagnosticSource" nuget package:

<PackageReference Include="System.Diagnostics.DiagnosticSource" Version="9.0.0" >
      <ExcludeAssets>runtime</ExcludeAssets>
    </PackageReference>

[maanlegaspi]

I had the same issue with .net 8 lambda, my workaround is to downgrade System.Diagnostics.DiagnosticSource to version 8.0.1 for now.

[remixed2]

None of the solutions I found on the internet did the trick for me. The only thing that worked, after debugging the source code of .Net Core was to remove MetricsFactoryHttpMessageHandlerFilter from the DI services and given that this is an internal class the only way to find it in the list of services was by name.

services
    .AddSingleton<....>
    ....................................
    .AddHttpClient();

var metricsFilterDescriptor = services.FirstOrDefault(descriptor =>
            descriptor.ImplementationType?.ToString() == "Microsoft.Extensions.Http.MetricsFactoryHttpMessageHandlerFilter");

services.Remove(metricsFilterDescriptor);