`Microsoft.Azure.Functions.Worker.Sdk` crashes azure function with http trigger

[wondertalik]

Package

Sentry.Azure.Functions.Worker

.NET Flavor

.NET Core

.NET Version

8.0.413

OS

macOS

OS Version

No response

Development Environment

Rider 2024 (MacOS)

SDK Version

5.14.1

Self-Hosted Sentry Version

No response

Workload Versions

dotnet workload list

Installed Workload Id Manifest Version Installation Source

Use dotnet workload search to find additional workloads to install.

UseSentry or SentrySdk.Init call

FunctionsApplicationBuilder builder = FunctionsApplication.CreateBuilder(args);
builder.UseSentry(options =>
{
    options.UseOpenTelemetry();
    options.DisableSentryHttpMessageHandler = true;
});
builder.ConfigureFunctionsWebApplication();

Steps to Reproduce

Azure function with http trigger crashes when use Microsoft.Azure.Functions.Worker.Sdk and Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore

In program.cs just comment builder.UseSentry and HttpTest function back to work.

Expected Result

Working function without exception

Actual Result

[2025-08-25T07:53:00.919Z] Function 'test-http', Invocation id '1c40128b-464a-462f-a2f8-c4a7c0d9715e': An exception was thrown by the invocation.
[2025-08-25T07:53:00.919Z] Result: Function 'test-http', Invocation id '1c40128b-464a-462f-a2f8-c4a7c0d9715e': An exception was thrown by the invocation.
[2025-08-25T07:53:00.919Z] Exception: System.UriFormatException: Invalid URI: The URI is empty.
[2025-08-25T07:53:00.919Z]    at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind, UriCreationOptions& creationOptions)
[2025-08-25T07:53:00.919Z]    at System.Uri..ctor(String uriString)
[2025-08-25T07:53:00.919Z]    at Microsoft.Azure.Functions.Worker.GrpcHttpRequestData.get_Url() in D:\a\_work\1\s\src\DotNetWorker.Grpc\Http\GrpcHttpRequestData.cs:line 101
[2025-08-25T07:53:00.919Z]    at Sentry.Azure.Functions.Worker.SentryFunctionsWorkerMiddleware.StartOrContinueTraceAsync(FunctionContext context)
[2025-08-25T07:53:00.919Z]    at Sentry.Azure.Functions.Worker.SentryFunctionsWorkerMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next)
[2025-08-25T07:53:00.919Z]    at Microsoft.Azure.Functions.Worker.FunctionsApplication.InvokeFunctionAsync(FunctionContext context) in D:\a\_work\1\s\src\DotNetWorker.Core\FunctionsApplication.cs:line 96
[2025-08-25T07:53:00.920Z] Stack:    at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind, UriCreationOptions& creationOptions)
[2025-08-25T07:53:00.920Z]    at System.Uri..ctor(String uriString)
[2025-08-25T07:53:00.920Z]    at Microsoft.Azure.Functions.Worker.GrpcHttpRequestData.get_Url() in D:\a\_work\1\s\src\DotNetWorker.Grpc\Http\GrpcHttpRequestData.cs:line 101
[2025-08-25T07:53:00.920Z]    at Sentry.Azure.Functions.Worker.SentryFunctionsWorkerMiddleware.StartOrContinueTraceAsync(FunctionContext context)
[2025-08-25T07:53:00.920Z]    at Sentry.Azure.Functions.Worker.SentryFunctionsWorkerMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next)
[2025-08-25T07:53:00.920Z]    at Microsoft.Azure.Functions.Worker.FunctionsApplication.InvokeFunctionAsync(FunctionContext context) in D:\a\_work\1\s\src\DotNetWorker.Core\FunctionsApplication.cs:line 96.

        <PackageReference Include="Microsoft.ApplicationInsights.WorkerService" Version="2.23.0" /> 
        <PackageReference Include="Microsoft.Azure.Functions.Worker.ApplicationInsights" Version="2.0.0" /> 
        <PackageReference Include="Microsoft.Azure.Functions.Worker" Version="2.0.0" />
        <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore" Version="2.0.2" />
        <PackageReference Include="Microsoft.Azure.Functions.Worker.Extensions.Timer" Version="4.3.1" />
        <PackageReference Include="Microsoft.Azure.Functions.Worker.OpenTelemetry" Version="1.1.0-preview6" />
        <PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="2.0.5" />
        <PackageReference Include="Sentry.Azure.Functions.Worker" Version="5.14.1" />
        <PackageReference Include="Sentry.OpenTelemetry" Version="5.14.1" />

[linear]

NET-425 `Microsoft.Azure.Functions.Worker.Sdk` crashes azure function with http trigger

[Flash0ver]

Thanks for the bug report.

It seems that we throw at

sentry-dotnet/src/Sentry.Azure.Functions.Worker/SentryFunctionsWorkerMiddleware.cs

Lines 117 to 121 in aebd6a2

	transactionName = attribute?.Route is { } route
	// Compose the transaction name from the method and route
	? $"{httpMethod} /{route.TrimStart('/')}"
	// There's no route provided, so use the absolute path of the URL
	: $"{httpMethod} {requestData.Url.AbsolutePath}";

where the Azure implementation uses
https://github.com/Azure/azure-functions-dotnet-worker/blob/2efafa83f9c6e9371a6b6adb2fc366d15c53de23/src/DotNetWorker.Grpc/Http/GrpcHttpRequestData.cs#L100

but not sure yet where the Root Cause of RpcHttp.Url being empty is from:
https://github.com/Azure/azure-functions-dotnet-worker/blob/2efafa83f9c6e9371a6b6adb2fc366d15c53de23/protos/azure-functions-language-worker-protobuf/src/proto/FunctionRpc.proto#L679

[wondertalik]

@Flash0ver thanks,

I hope the fix comes soon. This is blocking my development.

[Flash0ver]

Does it work the other way around, too?
i.e. keeping UseSentry but commenting ConfigureFunctionsWebApplication?

Not sure yet if the issue is in Sentry, Azure, or Rider.
Need to build a minimal reproduction and need to test it on another environment, too. (can test it on Windows / Visual Studio)