client can't get attachments which is set from server

[2456868764]

Environment

• Server: Dubbo-go, master
• Client: Dubbo-go, master
• Protocol: Triple
• Registry: N/A

Issue description

server code

func (srv *GreetTripleServer) Greet(ctx context.Context, req *greet.GreetRequest) (*greet.GreetResponse, error) {
	resp := &greet.GreetResponse{Greeting: req.Name}
	ctx = context.WithValue(ctx, constant.AttachmentKey, map[string]interface{}{"server_info": "dubbo httpbin"})
	return resp, nil
}

client code

        ctx := context.Background()
	resp, err := svc.Greet(ctx, &greet.GreetRequest{Name: "hello world"})
	if err != nil {
		c.JSON(http.StatusBadGateway, err.Error())
		return
	}
	attachments := make(map[string]interface{})
	if ctx.Value(constant.AttachmentKey) != nil {
		attachments = ctx.Value(constant.AttachmentKey).(map[string]interface{})
	}

and found that client attachments is nil.
then use curl to simulate as http which return is follow:

(base) ➜  dubbo-go git:(feat-security) ✗ curl -v -H "content-type:application/json" http://127.0.0.1:8000/greet.GreetService/Greet -d '{"name":"hello"}'
*   Trying 127.0.0.1:8000...
* Connected to 127.0.0.1 (127.0.0.1) port 8000 (#0)
> POST /greet.GreetService/Greet HTTP/1.1
> Host: 127.0.0.1:8000
> User-Agent: curl/8.1.2
> Accept: */*
> content-type:application/json
> Content-Length: 16
>
< HTTP/1.1 200 OK
< Accept-Encoding: gzip
< Content-Type: application/json
< Date: Fri, 22 Mar 2024 03:05:43 GMT
< Content-Length: 20
<
* Connection #0 to host 127.0.0.1 left intact
{"greeting":"hello"}%

no attachments return

Logs

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[YarBor]

plz assign to me

[Yan0613]

thx, I will fix it as soon as possible.

[YarBor]

Hi @Yan0613 I was working on this issue and don't think two people need to work on this. : )
I have been discussing this with mentors for some time.
However, if you have a solution ready, please let me know. Thanks!

[Yan0613]

Hi @Yan0613 I was working on this issue and don't think two people need to work on this. : )
I have been discussing this with mentors for some time.
However, if you have a solution ready, please let me know. Thanks!

I see, but I think.that's no problem, I have also received this task😂

[YarBor]

Hi @Yan0613 I was working on this issue and don't think two people need to work on this. : )您好，我正在研究这个问题，并且认为不需要两个人来解决这个问题。 :)
I have been discussing this with mentors for some time.我和导师讨论这个问题已经有一段时间了。
However, if you have a solution ready, please let me know. Thanks! 但是，如果您准备好解决方案，请告诉我。谢谢！

I see, but I think.that's no problem, I have also received this task😂明白了，不过我想，没问题，我也接到这个任务了😂

haha, But I think this appeal is reasonable and worth trying.