if no AAAA, return nil
(domain string)
| 55 | |
| 56 | // if no AAAA, return nil |
| 57 | func (c *DNSClient) AAAA(domain string) (net.IP, error) { |
| 58 | m := &dns.Msg{} |
| 59 | m.SetQuestion(domain+".", dns.TypeAAAA) |
| 60 | m, err := c.Exchange(m) |
| 61 | if err != nil { |
| 62 | return nil, err |
| 63 | } |
| 64 | for _, v := range m.Answer { |
| 65 | if t, ok := v.(*dns.AAAA); ok { |
| 66 | return t.AAAA, nil |
| 67 | } |
| 68 | } |
| 69 | return nil, nil |
| 70 | } |
| 71 | |
| 72 | // if no A, return nil |
| 73 | func (c *DNSClient) A(domain string) (net.IP, error) { |