package main

import (
	"flag"
	"fmt"
	"os"
	"os/signal"
	"time"
	"github.com/sparrc/go-ping"
)

var usage = `
Usage:
    ping [-c count] [-i interval] [-t timeout] [--privileged] host
Examples:
    # ping google continuously
    ping www.google.com
    # ping google 5 times
    ping -c 5 www.google.com
    # ping google 5 times at 500ms intervals
    ping -c 5 -i 500ms www.google.com
    # ping google for 10 seconds
    ping -t 10s www.google.com
    # Send a privileged raw ICMP ping
    sudo ping --privileged www.google.com
`
var(
	timeout = flag.Duration("t", time.Second*100000, "")
    interval = flag.Duration("i", time.Second, "")
	count = flag.Int("c", -1, "")
	privileged = flag.Bool("privileged", true, "")
)

func main() {
	flag.Usage = func() {
		fmt.Printf(usage)
	}
	flag.Parse()

	if flag.NArg() == 0 {
		flag.Usage()
		return
	}

	host := flag.Arg(0)

	//makePinger(host)
	for i:=0;i<100;i++{
		fmt.Println(i)
		go makePinger(host)
		//fmt.Println("/")
		//fmt.Println(host)
	}
	var input string
	fmt.Scanln(&input)

}

func makePinger(host string){
	pinger, err := ping.NewPinger(host)
	fmt.Println("Pinger created!")
	if err != nil {
		fmt.Printf("ERROR: %s\n", err.Error())
		return
	}
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	go func() {
		for _ = range c {
			pinger.Stop()
		}
	}()
	pinger.OnRecv = func(pkt *ping.Packet) {
		fmt.Printf("%d bytes from %s: icmp_seq=%d time=%v ttl=%v\n",
			pkt.Nbytes, pkt.IPAddr, pkt.Seq, pkt.Rtt, pkt.Ttl)
	}
	pinger.OnFinish = func(stats *ping.Statistics) {
		fmt.Printf("\n--- %s ping statistics ---\n", stats.Addr)
		fmt.Printf("%d packets transmitted, %d packets received, %v%% packet loss\n",
			stats.PacketsSent, stats.PacketsRecv, stats.PacketLoss)
		fmt.Printf("round-trip min/avg/max/stddev = %v/%v/%v/%v\n",
			stats.MinRtt, stats.AvgRtt, stats.MaxRtt, stats.StdDevRtt)
	}
	pinger.Count = *count
	pinger.Interval = *interval
	pinger.Timeout = *timeout
	pinger.SetPrivileged(*privileged)
	fmt.Printf("PING %s (%s):\n", pinger.Addr(), pinger.IPAddr())
	pinger.Run()
}