Streaming proto can not generate http code

[hoslo]

What happened:

Streaming proto can not generate http code

What you expected to happen:

generate http code

How to reproduce it (as minimally and precisely as possible):

rpc CreateZip (CreateZipRequest) returns (stream CreateZipReply) {
option (google.api.http) = {
post: "/api/util/other/zip",
body: "*"
};
}

Anything else we need to know?:

Environment:

• Kratos version (use kratos -v): v2.2.0
• Go version (use go version): go version go1.18 windows/amd64
• OS (e.g: cat /etc/os-release): centos7
• Others:

[shenqidebaozi]

HTTP definitions cannot be used in streaming

[hoslo]

HTTP definitions cannot be used in streaming

So how to use http streaming in kratos?

[shenqidebaozi]

Not for the time being

[hoslo]

Not for the time being

How to use middleware for this custom HTTP interface?

opts := []http.ServerOption{
		http.Middleware(
			ratelimit.Server(),
			middleware.Recovery(logger),
			tracing.Server(),
			middleware.Server(logger),
			validate.Validator(),
		),
	}
srv := http.NewServer(opts...)
srv.Route("/").POST("/api/util/other/zip", func(ctx http.Context) error {
		var req v1.CreateZipRequest
		if err := ctx.Bind(&req); err != nil {
			return err
		}
		err := us.uc.CreateZipHttp(context.Background(), &req, ctx.Response())
		if err != nil {
			return err
		}
		return nil
	})

and i use ctx.Response() as streaming io.Writer get this error:
http: superfluous response.WriteHeader call from github.com/go-kratos/kratos/v2/transport/http.DefaultErrorEncoder (codec.go:68)

[shenqidebaozi]

You can refer to the usage in the xxxx.http.pb.go file generated by the tool

[tom-lch]

me too，kratos can‘t’ generate stream code in xxx_http.pb.go， 什么时候可以支持kratos生成stream的http客户端呢？

[dosubot]

Hi, @hoslo! I'm Dosu, and I'm helping the kratos team manage their backlog. I wanted to let you know that we are marking this issue as stale.

From what I understand, you were experiencing an issue with the streaming proto not generating the expected HTTP code in Kratos version 2.2.0. It was mentioned that HTTP definitions cannot be used in streaming, and you asked how to use middleware for a custom HTTP interface. Another user suggested referring to the usage in the xxxx.http.pb.go file generated by the tool.

Based on the resolution, it seems that the issue has been resolved. You were informed that HTTP definitions cannot be used in streaming in Kratos, and you were advised to refer to the usage in the xxxx.http.pb.go file generated by the tool for guidance on using middleware for a custom HTTP interface.

Before we close this issue, we wanted to check with you if it is still relevant to the latest version of the kratos repository. If it is, please let us know by commenting on the issue. Otherwise, feel free to close the issue yourself, or it will be automatically closed in 7 days.

Thank you for your understanding and contribution to the kratos repository!