SkyeYoung commented on issue #12202:
URL: https://github.com/apache/apisix/issues/12202#issuecomment-3144037729
Hi, First of all, thank you very much for providing such a good minimal
reproduction environment.
I spent a lot of time using `gdb` to trace functions in nginx, but to no
avail.
But @bzp2010 prompts me that nginx may not parse correctly without Header
`Trailer`.
So I tried change your minimal example:
```go
// cmd/main.go
func (s *server) SayHello(req *example.HelloRequest, stream
grpc.ServerStreamingServer[example.HelloReply]) error {
+ trailerMD := metadata.Pairs(
+ "Trailer", "grpc-message, grpc-status",
+ )
+
+ stream.SendHeader(trailerMD)
return status.Errorf(codes.Internal, "this error is expected")
}
```
**It works.**
<img width="1234" height="142" alt="Image"
src="https://github.com/user-attachments/assets/1fb19359-c2f2-4a47-b865-7d771bf3912d";
/>
---
I'm not familiar with the standards of grpc, but ChatGPT told me that it
seems to be normal for gRPC (only works with http/2) to not have this Header
`Trailer`.
I'm not quite sure yet; this requires discussion.
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