package cdns

import (
	"time"

	"github.com/miekg/dns"
)

// DNS check configuration constants.
const (
	// Timeout is the DNS query timeout in seconds.
	Timeout        float64 = float64(1.5)
	MaxTrials      uint    = 3
	MaxNameservers uint    = 20
	MaxAddresses   uint    = 10
	EdnsbufferSize uint16  = 4096
)

var (
	conf           *dns.ClientConfig
	debug          = false
	maxTrials      = 3
	v4only         = true
	v6only         = false
	bufsize        = EdnsbufferSize
	timeout        = time.Duration(float64(Timeout) * float64(time.Second))
	noedns         = false
	recursion      = false
	tcp            = false
	noauthrequired = false
	nodnssec       = false
)

func init() {
	conf = &dns.ClientConfig{
		Servers: []string{"8.8.8.8", "1.1.1.1", "77.88.8.8"},
		Port:    "53",
	}
}