main.go

package main

import (
	"log"
	"net/http"
)

func main() {
	links := []string{
		"http://google.com",
		"http://facebook.com",
		"http://stackoverflow.com",
		"http://golang.org",
		"http://amazon.com",
	}

	c := make(chan string)

	for _, link := range links {
		go checkLink(link, c)
	}

	// When the function completes, schedule a new go routine
	// Pass the link into the function.
	for l := range c {
		go checkLink(l, c)
	}
}

func checkLink(link string, c chan string) {
	_, err := http.Get(link)
	if err != nil {
		log.Println(link, "is down!")
		c <- link
		return
	}

	log.Println(link, "is doing fine")
	c <- link

}