如何从将x-real-ip和x-forward-for添加到报头的负载均衡器获取gRPC中的客户端IP地址？

import (
    "context"
    "net/http"

    "google.golang.org/grpc"
    "google.golang.org/grpc/metadata"
)

func getClientIP(ctx context.Context) (string, error) {
    md, ok := metadata.FromIncomingContext(ctx)
    if !ok {
        return "", errors.New("failed to get metadata from context")
    }

    ipList, ok := md["x-real-ip"]
    if !ok || len(ipList) == 0 {
        return "", errors.New("x-real-ip not found in metadata")
    }

    return ipList[0], nil
}

// gRPC handler function
func MyGrpcHandler(ctx context.Context, req *MyRequest) (*MyResponse, error) {
    clientIP, err := getClientIP(ctx)
    if err != nil {
        // Handle error
    }

    // Rest of the logic

    return &MyResponse{}, nil
}