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48 lines
1.3 KiB
48 lines
1.3 KiB
/* |
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* Traditional DNS header OPCODEs (4-bits) defined by IANA in |
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* https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml#dns-parameters-5 |
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*/ |
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exports.toString = function (opcode) { |
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switch (opcode) { |
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case 0: return 'QUERY' |
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case 1: return 'IQUERY' |
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case 2: return 'STATUS' |
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case 3: return 'OPCODE_3' |
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case 4: return 'NOTIFY' |
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case 5: return 'UPDATE' |
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case 6: return 'OPCODE_6' |
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case 7: return 'OPCODE_7' |
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case 8: return 'OPCODE_8' |
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case 9: return 'OPCODE_9' |
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case 10: return 'OPCODE_10' |
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case 11: return 'OPCODE_11' |
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case 12: return 'OPCODE_12' |
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case 13: return 'OPCODE_13' |
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case 14: return 'OPCODE_14' |
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case 15: return 'OPCODE_15' |
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} |
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return 'OPCODE_' + opcode |
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} |
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exports.toOpcode = function (code) { |
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switch (code.toUpperCase()) { |
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case 'QUERY': return 0 |
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case 'IQUERY': return 1 |
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case 'STATUS': return 2 |
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case 'OPCODE_3': return 3 |
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case 'NOTIFY': return 4 |
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case 'UPDATE': return 5 |
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case 'OPCODE_6': return 6 |
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case 'OPCODE_7': return 7 |
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case 'OPCODE_8': return 8 |
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case 'OPCODE_9': return 9 |
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case 'OPCODE_10': return 10 |
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case 'OPCODE_11': return 11 |
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case 'OPCODE_12': return 12 |
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case 'OPCODE_13': return 13 |
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case 'OPCODE_14': return 14 |
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case 'OPCODE_15': return 15 |
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} |
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return 0 |
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}
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