32 lines
502 B
Go
32 lines
502 B
Go
package dns
|
|
|
|
import (
|
|
"errors"
|
|
"net"
|
|
)
|
|
|
|
var (
|
|
errIPNotFound = errors.New("cannot found ip")
|
|
)
|
|
|
|
// ResolveIP with a host, return ip
|
|
func ResolveIP(host string) (net.IP, error) {
|
|
if DefaultResolver != nil {
|
|
if DefaultResolver.ipv6 {
|
|
return DefaultResolver.ResolveIP(host)
|
|
}
|
|
return DefaultResolver.ResolveIPv4(host)
|
|
}
|
|
|
|
ip := net.ParseIP(host)
|
|
if ip != nil {
|
|
return ip, nil
|
|
}
|
|
|
|
ipAddr, err := net.ResolveIPAddr("ip", host)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return ipAddr.IP, nil
|
|
}
|