test

test lookup

# tested with:
# sudo firewall-cmd --direct --add-rule ipv4 filter OUTPUT 0 -d <IP> -j DROP

package main

import (
	"fmt"
	"net"
	"time"
)

func main() {
	for i := 0; i < 30; i++ {
		time.Sleep(1 * time.Second)
		go func(count int) {
			t := time.Now()
			conn, err := net.DialTimeout("tcp", "google.com:80", 1*time.Second)
			duration := time.Now().Sub(t)
			fmt.Printf("%v: Duration=%v, conn=%v, err=%v\n", count, duration, conn, err)
		}(i)
	}
}