[BUG] micro-service use gRPC-Gateway, the client send http request to grpc, the request resolve status is unknown

[Fancyki1]

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• I had searched in the issues and found no similar feature requirement.

DeepFlow Component

Agent

What you expected to happen

背景： k8s环境中，有部分微服务使用了gRPC-Gateway发送http内部转grpc请求
结论： deepflow可以采集到http的请求内容，但是无法采集和解析grpc请求，响应状态为unknown
使用组件： https://github.com/grpc-ecosystem/grpc-gateway
组件原理：

请求拓扑：

代码实现：
定义一个grpc接口文件

syntax = "proto3";

option go_package=".;sys_time";

package sys_time;

import "google/api/annotations.proto";

message GetCurrSysTimeReq {

}

message GetCurrSysTimeRsp {
    message Data {
        int64 timeStamp = 1;
    }
    uint32 code = 1;
    string msg = 2;
    Data data = 3;
}

service SysTime {
    // 获取当前系统时间
    rpc GetCurrSysTime(GetCurrSysTimeReq) returns (GetCurrSysTimeRsp) {
	option (google.api.http) = {
            get: "/api/v1/currSysTime",
        };
    }
}

golang代码实现

// ...
func (sysTimeServer *SysTimeServer) GetCurrSysTime(ctx context.Context,req *sys_time.GetCurrSysTimeReq) (*sys_time.GetCurrSysTimeRsp, error) {
	currentTime := time.Now()
	milliSeconds := currentTime.UnixMilli()

	return &sys_time.GetCurrSysTimeRsp{
		Code: APISuccess.HttpCode,
		Msg:  APISuccess.Code,
		Data: &sys_time.GetCurrSysTimeRsp_Data{
			TimeStamp: milliSeconds,
		},
	}, nil
}
// ...

deepflow可观测结果

前端gateway->micro-service：http请求采集正常
micro-service->grpc gateway->grpc server: grpc请求采集异常
经过grpc gateway采集的grpc请求状态都为unknown无法解析

经过测试： 重启服务后，采集的一段时间内，请求结果是成功了，之后又全部unknown了

另外： 采用开启uprobe后，请求的状态获取正常，但是uprobe配合extra-log-fields自定义头采集，开启后短暂时间内可以采集到自定义头部，明显unknown大量减少，但是过了30秒后自定义头部就采集不到了，我们尝试在agent rust源代码处理的位置打了log，重新编译agent部署测试，过了大概30秒后，发现ebpf内核采集的数据到了rust用户态处理的阶段自定义header数据就没了，这个会有另一个issue去记录。

@sharang @yinjiping

How to reproduce

No response

DeepFlow version

kubectl exec -it -n deepflow deploy/deepflow-server -- deepflow-server -v

Name: deepflow-server community edition
Branch: v6.5
CommitID: 9cefc731a5577fdbf67ec1196cef037b28abbe88
RevCount: 10866
Compiler: go version go1.21.13 linux/amd64
CompileTime: 2024-08-30 09:40:53

kubectl exec -it -n deepflow ds/deepflow-agent -- deepflow-agent -v

Defaulted container "deepflow-agent" out of: deepflow-agent, configure-sysctl (init)
10841-e0a10484155463453b61b20bd5fcd6222d59f829
Name: deepflow-agent community edition
Branch: v6.5
CommitId: e0a10484155463453b61b20bd5fcd6222d59f829
RevCount: 10841
Compiler: rustc 1.77.1 (7cf61ebde 2024-03-27)
CompileTime: 2024-08-18 14:17:18

DeepFlow agent list

No response

Kubernetes CNI

No response

Operation-System/Kernel version

4.18.0-372.32.1.90.po1.x86_64

Anything else

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct