2456868764 opened a new issue, #2642:
URL: https://github.com/apache/dubbo-go/issues/2642
### Environment
<!--
- Server: Dubbo-go, master
- Client: Dubbo-go, master
- Protocol: Triple
- Registry: N/A
-->
- Server:
- Client:
- Protocol:
- Registry:
### Issue description
there is dubbo filter demo code which just output attachments :
````
func (f *mtlsFilter) Invoke(ctx context.Context, invoker protocol.Invoker,
invocation protocol.Invocation) protocol.Result {
// get request schema
attachments :=
ctx.Value(constant.AttachmentKey).(map[string]interface{})
for key, attachment := range attachments {
logger.Infof("get triple attachment key %s = %s", key,
attachment.([]string)[0])
}
}
```
and output as follow:
```
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [retries ] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [user-agent grpc-go-triple/0.1.0 (go1.21.6)] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [te trailers] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [content-type application/grpc+proto] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [interface greet.GreetService] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [grpc-accept-encoding gzip] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [timeout ] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [grpc-timeout 2999023u] = %!s(MISSING)
2024-03-22 02:15:34 INFO logger/logging.go:42 get triple
attachment key [accept-encoding identity] = %!s(MISSING)
```
and miss some common http header like scheme ,host etc.
<!-- Here is a brief description about the issue. -->
### Logs
<details><summary>Click me to check logs</summary>
```
Copy logs to here.
```
</details>
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