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1
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/*
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2
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* Traditional DNS header RCODEs (4-bits) defined by IANA in
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3
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* https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml
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4
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*/
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5
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6
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exports.toString = function (rcode) {
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7
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switch (rcode) {
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8
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case 0: return 'NOERROR'
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9
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case 1: return 'FORMERR'
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10
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case 2: return 'SERVFAIL'
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11
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case 3: return 'NXDOMAIN'
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12
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case 4: return 'NOTIMP'
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13
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case 5: return 'REFUSED'
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14
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case 6: return 'YXDOMAIN'
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15
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case 7: return 'YXRRSET'
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16
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case 8: return 'NXRRSET'
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17
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case 9: return 'NOTAUTH'
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18
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case 10: return 'NOTZONE'
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19
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case 11: return 'RCODE_11'
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20
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case 12: return 'RCODE_12'
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21
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case 13: return 'RCODE_13'
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22
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case 14: return 'RCODE_14'
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23
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case 15: return 'RCODE_15'
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}
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return 'RCODE_' + rcode
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}
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27
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exports.toRcode = function (code) {
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29
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switch (code.toUpperCase()) {
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case 'NOERROR': return 0
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case 'FORMERR': return 1
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32
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case 'SERVFAIL': return 2
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33
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case 'NXDOMAIN': return 3
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34
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case 'NOTIMP': return 4
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35
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case 'REFUSED': return 5
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36
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case 'YXDOMAIN': return 6
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37
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case 'YXRRSET': return 7
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38
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case 'NXRRSET': return 8
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39
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case 'NOTAUTH': return 9
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40
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case 'NOTZONE': return 10
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41
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case 'RCODE_11': return 11
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42
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case 'RCODE_12': return 12
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43
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case 'RCODE_13': return 13
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case 'RCODE_14': return 14
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45
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case 'RCODE_15': return 15
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46
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}
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return 0
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48
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}
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