CoCalc provides the best real-time collaborative environment for Jupyter Notebooks, LaTeX documents, and SageMath, scalable from individual users to large groups and classes!

1
# -*- coding: binary -*-
2
##
3
#
4
# dns.rb
5
#
6
# $id$
7
#
8
##
9

10
module Net # :nodoc:
11
  module DNS
12
    
13
    # Version of the library
14
    VERSION = "0.4"
15
  
16
    # Packet size in bytes
17
    PACKETSZ = 512
18
    
19
    # Size of the header 
20
    HFIXEDSZ = 12
21
    
22
    # Size of the question portion (type and class)
23
    QFIXEDSZ = 4
24
    
25
    # Size of an RR portion (type,class,length and ttl)
26
    RRFIXEDSZ = 10
27
    
28
    # Size of an int 32 bit
29
    INT32SZ = 4
30
    
31
    # Size of a short int
32
    INT16SZ = 2
33

34
    module QueryTypes
35
    
36
      SIGZERO   = 0
37
      A         = 1
38
      NS        = 2
39
      MD        = 3
40
      MF        = 4
41
      CNAME     = 5
42
      SOA       = 6
43
      MB        = 7
44
      MG        = 8
45
      MR        = 9
46
      NULL      = 10
47
      WKS       = 11
48
      PTR       = 12
49
      HINFO     = 13
50
      MINFO     = 14
51
      MX        = 15
52
      TXT       = 16
53
      RP        = 17
54
      AFSDB     = 18
55
      X25       = 19
56
      ISDN      = 20
57
      RT        = 21
58
      NSAP      = 22
59
      NSAPPTR   = 23
60
      SIG       = 24
61
      KEY       = 25
62
      PX        = 26
63
      GPOS      = 27
64
      AAAA      = 28
65
      LOC       = 29
66
      NXT       = 30
67
      EID       = 31
68
      NIMLOC    = 32
69
      SRV       = 33
70
      ATMA      = 34
71
      NAPTR     = 35
72
      KX        = 36
73
      CERT      = 37
74
      DNAME     = 39
75
      OPT       = 41
76
      DS        = 43
77
      SSHFP     = 44
78
      RRSIG     = 46
79
      NSEC      = 47
80
      DNSKEY    = 48
81
      UINFO     = 100
82
      UID       = 101
83
      GID       = 102
84
      UNSPEC    = 103
85
      TKEY      = 249
86
      TSIG      = 250
87
      IXFR      = 251
88
      AXFR      = 252
89
      MAILB     = 253
90
      MAILA     = 254
91
      ANY       = 255
92

93
    end
94
    
95
    module QueryClasses
96
    
97
      # Internet class
98
      IN        = 1
99
      
100
      # Chaos class
101
      CH        = 3
102
    
103
      # Hesiod class
104
      HS        = 4
105
      
106
      # None class
107
      NONE      = 254
108
      
109
      # Any class
110
      ANY       = 255
111
      
112
    end
113
    
114
    include QueryTypes
115
    include QueryClasses
116

117
  end # module DNS
118
end # module Net
119

120