go get github.com/lixiangzhong/dnsutil//Normal
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
var dig dnsutil.Dig
dig.SetDNS("8.8.8.8") //or ns.xxx.com
a, err := dig.A("google.com") // dig google.com @8.8.8.8
fmt.Println(a, err)
}//msg
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
"github.com/miekg/dns"
)
func main() {
var dig dnsutil.Dig
dig.SetDNS("1.1.1.1")
msg, err := dig.GetMsg(dns.TypeA, "google.com")
if err != nil {
fmt.Println(err)
return
}
// fmt.Println(msg)
// or
fmt.Println(msg.Question) //question section
fmt.Println(msg.Answer) //answer section.
fmt.Println(msg.Ns) //authority section.
fmt.Println(msg.Extra) //additional section.
}//EDNS0ClientSubnet
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
var dig dnsutil.Dig
dig.SetDNS("8.8.8.8") //or ns.xxx.com
dig.SetEDNS0ClientSubnet("123.123.123.123") //support edns0clientsubnet
a, err := dig.A("google.com") // dig google.com @8.8.8.8 +client=123.123.123.123
fmt.Println(a, err)
}//Retry
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
var dig dnsutil.Dig
dig.Retry=3 //retry when write or read message return error . defualt 1
dig.SetDNS("8.8.8.8") //or ns.xxx.com
a, err := dig.A("google.com") // dig google.com @8.8.8.8
fmt.Println(a, err)
}//dig +trace
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
domain := "google.com"
var dig dnsutil.Dig
rsps, err := dig.Trace(domain) //dig +trace google.com
if err != nil {
fmt.Println(err)
return
}
for _, rsp := range rsps {
if rsp.Msg.Authoritative {
for _, answer := range rsp.Msg.Answer {
fmt.Println(answer)
}
}
for _, ns := range rsp.Msg.Ns {
fmt.Println(ns)
}
fmt.Println("\tReceived from", rsp.Server, rsp.ServerIP)
}
}//检查是否被污染
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
polluted, err := dnsutil.IsPolluted("facebook.com")
if err != nil {
fmt.Println(err)
return
}
if polluted {
fmt.Println("被污染,你懂的")
} else {
fmt.Println("正常")
}
}//SetBackupDNS
//同时向设置的2个DNS发起请求,返回最快响应的那个结果
//Initiate requests to two DNS settings at the same time, returning the fastest response result
package main
import (
"fmt"
"github.com/lixiangzhong/dnsutil"
)
func main() {
var dig dnsutil.Dig
dig.SetDNS("1.1.1.1")
dig.SetBackupDNS("8.8.8.8")
a, err := dig.A("google.com")
if err != nil {
fmt.Println(err)
return
}
fmt.Println(a)
}