| 24 | ) |
| 25 | |
| 26 | func Socks5Test(s, u, p, domain, a, ds string) error { |
| 27 | s5c, err := socks5.NewClient(s, u, p, 0, 60) |
| 28 | if err != nil { |
| 29 | return err |
| 30 | } |
| 31 | |
| 32 | fmt.Println("Testing TCP: query " + domain + " A on " + ds) |
| 33 | c := &dns.Client{Net: "tcp"} |
| 34 | tc, err := s5c.Dial("tcp", ds) |
| 35 | if err != nil { |
| 36 | return err |
| 37 | } |
| 38 | defer tc.Close() |
| 39 | m := &dns.Msg{} |
| 40 | m.RecursionDesired = true |
| 41 | m.SetQuestion(domain+".", dns.TypeA) |
| 42 | m, _, err = c.ExchangeWithConn(m, &dns.Conn{Conn: tc}) |
| 43 | if err != nil { |
| 44 | return err |
| 45 | } |
| 46 | if len(m.Answer) == 0 { |
| 47 | return errors.New("no answer") |
| 48 | } |
| 49 | v, ok := m.Answer[0].(*dns.A) |
| 50 | if !ok { |
| 51 | return errors.New("invalid answer") |
| 52 | } |
| 53 | if v.A.String() != a { |
| 54 | fmt.Println("Expect", a, "but got", v.A.String()) |
| 55 | } |
| 56 | if v.A.String() == a { |
| 57 | fmt.Println("TCP: OK") |
| 58 | } |
| 59 | |
| 60 | fmt.Println("Testing UDP: query " + domain + " A on " + ds) |
| 61 | uc, err := s5c.Dial("udp", ds) |
| 62 | if err != nil { |
| 63 | return err |
| 64 | } |
| 65 | defer uc.Close() |
| 66 | m = &dns.Msg{} |
| 67 | m.RecursionDesired = true |
| 68 | m.SetQuestion(domain+".", dns.TypeA) |
| 69 | b, err := m.Pack() |
| 70 | if err != nil { |
| 71 | return err |
| 72 | } |
| 73 | if _, err := uc.Write(b); err != nil { |
| 74 | return err |
| 75 | } |
| 76 | log.Printf("Sent Datagram. %#v\n", b) |
| 77 | b = make([]byte, 512) |
| 78 | i, err := uc.Read(b) |
| 79 | if err != nil { |
| 80 | return err |
| 81 | } |
| 82 | if err := m.Unpack(b[:i]); err != nil { |
| 83 | return err |