| 1 | var dns = require('../dns'),
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| 2 | util = require('util');
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| 3 |
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| 4 | var question = dns.Question({
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| 5 | name: 'www.google.com',
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| 6 | type: dns.consts.NAME_TO_QTYPE.A,
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| 7 | });
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| 8 |
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| 9 | var start = new Date().getTime();
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| 10 |
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| 11 | var req = dns.Request({
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| 12 | question: question,
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| 13 | server: { address: '8.8.8.8', port: 53, type: 'udp' },
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| 14 | timeout: 1000,
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| 15 | });
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| 16 |
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| 17 | req.on('timeout', function () {
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| 18 | console.log('Timeout in making request');
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| 19 | });
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| 20 |
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| 21 | req.on('message', function (err, answer) {
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| 22 | console.log(toDig.call(answer));
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| 23 | });
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| 24 |
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| 25 | req.on('end', function () {
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| 26 | var delta = (new Date().getTime()) - start;
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| 27 | console.log('Finished processing request: ' + delta.toString() + 'ms');
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| 28 | });
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| 29 |
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| 30 | req.send();
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| 31 |
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| 32 | toDig = function() {
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| 33 | var ret = [], tmp, flags = [];
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| 34 |
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| 35 | tmp = ';; ->>HEADER<<- opcode: ';
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| 36 | switch (this.header.opcode) {
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| 37 | case 0:
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| 38 | tmp += 'QUERY';
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| 39 | break;
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| 40 | case 1:
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| 41 | tmp += 'IQUERY';
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| 42 | break;
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| 43 | case 2:
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| 44 | tmp += 'STATUS';
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| 45 | break;
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| 46 | default:
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| 47 | tmp += 'UNKNOWN';
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| 48 | break;
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| 49 | }
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| 50 | tmp += ', status: ' + dns.consts.RCODE_TO_NAME[this.header.rcode];
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| 51 | tmp += ', id: ' + this.header.id;
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| 52 | ret.push(tmp);
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| 53 |
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| 54 | tmp = ';; flags: ';
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| 55 |
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| 56 | if (this.header.qr)
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| 57 | flags.push('qr');
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| 58 | if (this.header.rd)
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| 59 | flags.push('rd');
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| 60 | if (this.header.aa)
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| 61 | flags.push('aa');
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| 62 | if (this.header.tc)
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| 63 | flags.push('tc');
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| 64 | if (this.header.ra)
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| 65 | flags.push('ra');
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| 66 |
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| 67 | tmp += flags.join(' ') + ';';
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| 68 |
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| 69 | tmp += ' QUESTON: ' + this.question.length;
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| 70 | tmp += ', ANSWER: ' + this.answer.length;
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| 71 | tmp += ', AUTHORITY: ' + this.authority.length;
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| 72 | tmp += ', ADDITIONAL: ' + this.additional.length;
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| 73 |
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| 74 | ret.push(tmp);
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| 75 | ret.push('');
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| 76 |
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| 77 | var pushit = function(p) {
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| 78 | ret.push([
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| 79 | p.name,
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| 80 | dns.consts.QCLASS_TO_NAME[p.class],
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| 81 | dns.consts.QTYPE_TO_NAME[p.type],
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| 82 | p.address || p.data || '',
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| 83 | ].join('\t'));
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| 84 | };
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| 85 |
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| 86 | if (this.question.length) {
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| 87 | ret.push(';; QUESTION SECTION:');
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| 88 | this.question.forEach(function(q) {
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| 89 | ret.push('; ' + [q.name,
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| 90 | dns.consts.QCLASS_TO_NAME[q.class],
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| 91 | dns.consts.QTYPE_TO_NAME[q.type]
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| 92 | ].join('\t'));
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| 93 | });
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| 94 | ret.push('');
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| 95 | }
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| 96 |
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| 97 | if (this.answer.length) {
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| 98 | ret.push(';; ANSWER SECTION:');
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| 99 | this.answer.forEach(pushit);
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| 100 | ret.push('');
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| 101 | }
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| 102 |
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| 103 | if (this.authority.length) {
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| 104 | ret.push(';; AUTHORITY SECTION:');
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| 105 | this.authority.forEach(pushit);
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| 106 | ret.push('');
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| 107 | }
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| 108 |
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| 109 | if (this.additional.length) {
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| 110 | if (this.additional[0].type !== dns.consts.NAME_TO_QTYPE.OPT) {
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| 111 | ret.push(';; ADDITIONAL SECTION:');
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| 112 | this.additional.forEach(pushit);
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| 113 | ret.push('');
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| 114 | }
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| 115 | }
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| 116 |
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| 117 | ret.push(';; END');
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| 118 |
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| 119 | return ret.join('\n');
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| 120 | };
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| 121 |
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