| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "log" |
| 6 | "net/http" |
| 7 | "sync" |
| 8 | "time" |
| 9 | ) |
| 10 | |
| 11 | func main() { |
| 12 | when := make(chan time.Time, 2) |
| 13 | var wg sync.WaitGroup |
| 14 | wg.Add(2) |
| 15 | for _, port := range []string{"5001", "8080"} { |
| 16 | go func(port string) { |
| 17 | defer wg.Done() |
| 18 | for { |
| 19 | r, err := http.Get(fmt.Sprintf("http://127.0.0.1:%s", port)) |
| 20 | if err != nil { |
| 21 | continue |
| 22 | } |
| 23 | t := time.Now() |
| 24 | when <- t |
| 25 | log.Println(port, t, r.StatusCode) |
| 26 | break |
| 27 | } |
| 28 | }(port) |
| 29 | } |
| 30 | wg.Wait() |
| 31 | first := <-when |
| 32 | second := <-when |
| 33 | log.Println(second.Sub(first)) |
| 34 | } |