grpc/grpc-dotnet

Endpoint 'gRPC - Unimplemented service'

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#1,679 创建于 2022年4月8日

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help wantedquestion

描述

I have a service that is not behaving as it should. While troubleshooting it, I noticed this debug output:

Endpoint 'gRPC - Unimplemented service' with route pattern '{unimplementedService}/{unimplementedMethod}' is valid for the request path ... (the path of the non-working service).

What does this mean? I register my Grpc-service using endpoints.MapGrpcService<InforARIService>();

The actual issue I was troubleshooting is that the Grpc-service is invoked, does it's work correctly and returns a class with two string properties. However, on the wire the response is empty (so the client gets a serialization error):

HTTP/1.1 200 OK
Content-Length: 0
Content-Type: application/grpc-web
Date: Fri, 08 Apr 2022 09:23:39 GMT
Server: Kestrel
Request-Context: appId=cid-v1:87cb2164-3464-497d-a7b4-80e9471bf6c3
Grpc-Status: 0
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000

贡献者指南

技术栈
csharpgrpc
领域
backendapi
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
needs investigation
前置要求
basic knowledge of gRPCC#/.NET development
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
20
研究方向
The issue involves a gRPC Web endpoint returning an empty response despite the service working correctly. Investigate the gRPC Web middleware implementation in grpc dotnet, particularly the response serialization and header handling. Check if the service method's return type is properly serialized by the Protobuf serializer. Look at existing tests for gRPC Web (e.g., in test/Grpc.AspNetCore.Server.Tests/) to understand expected behavior. Also review comments on the issue for any additional context provided by maintainers.
Endpoint 'gRPC - Unimplemented service' · grpc/grpc-dotnet#1679 | Good First Issue