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