pinger_goroutine.go

package main

import (
        "log"
        "net/http"
        "sync"
)

func main() {
        urls := []string{
                "https://github.com",
                "https://api.github.com",
                "https://google.com",
                "https://ngurajeka.com",
                "https://meraxes.id",
                "https://valutac.com",
                "https://teams.microsoft.com",
                "https://facebook.com",
                "https://twitter.com",
        }
        var wg sync.WaitGroup
        for _, url := range urls {
                wg.Add(1)

                go func(v string) {
                        defer wg.Done()
                        resp, err := http.Get(v)
                        if err != nil {
                                log.Printf("%s got err: %s", v, err.Error())
                                return
                        }
                        defer resp.Body.Close()

                        if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusCreated {
                                log.Printf("%s get error code: %d", v, resp.StatusCode)
                                return
                        }
                        log.Printf("%s looks fine", v)
                }(url)
        }
        wg.Wait()
}