dotnet protocol_error ai_generated true

Grpc.Core.RpcException: Status(StatusCode="Unimplemented", Detail="方法 service.MethodName 未实现。")

Grpc.Core.RpcException: Status(StatusCode="Unimplemented", Detail="Method service.MethodName is unimplemented.")

ID: dotnet/grpc-unsupported-protocol

其他格式: JSON · Markdown 中文 · English
85%修复率
87%置信度
1证据数
2024-01-10首次发现

版本兼容性

版本状态引入弃用备注
gRPC C# 2.46.0 active — — —
Grpc.AspNetCore 2.57.0 active — — —
Google.Protobuf 3.24.0 active — — —
.NET 6.0 active — — —
.NET 7.0 active — — —
.NET 8.0 active — — —

根因分析

gRPC 客户端调用了服务器没有处理程序的方法，通常是由于服务定义不匹配、缺少方法实现或 proto 文件编译错误导致的。

English

The gRPC client is calling a method that the server does not have a handler for, often due to mismatched service definitions, missing method implementation, or incorrect proto file compilation.

generic

官方文档

https://learn.microsoft.com/en-us/aspnet/core/grpc/troubleshoot?view=aspnetcore-8.0

解决方案

  1. Regenerate both client and server stubs from the same .proto file. Example command: protoc --csharp_out=./Client --grpc_out=./Client --plugin=protoc-gen-grpc=grpc_csharp_plugin service.proto
  2. Verify the server implements all methods defined in the proto file by checking the generated service base class. Ensure no method is missing or commented out.
  3. Ensure the client is using the correct service address and port. Test with grpcurl: grpcurl -plaintext localhost:50051 list

无效尝试

常见但无效的做法:

  1. Restarting the server without updating the proto files or regenerating the client stub. 95% 失败

    The issue is a mismatch between client and server definitions; restarting alone does not synchronize them.

  2. Adding a catch-all method in the server that returns an empty response. 90% 失败

    gRPC relies on strict method contracts; a catch-all violates the protocol and may cause other errors.

  3. Changing the client to use a different HTTP version (e.g., HTTP/1.1). 100% 失败

    gRPC requires HTTP/2; HTTP/1.1 is not supported and will cause a different error.