25 lines
1.7 KiB
JavaScript
25 lines
1.7 KiB
JavaScript
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"use strict";
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var dnsPacket = _interopRequireWildcard(require("@leichtgewicht/dns-packet"), true);
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var _dgram = require("dgram");
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function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
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function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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const socket = _dgram.createSocket('udp4');
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function getRandomInt(min, max) {
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return Math.floor(Math.random() * (max - min + 1)) + min;
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}
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const buf = dnsPacket.encode({
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type: 'query',
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id: getRandomInt(1, 65534),
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flags: dnsPacket.RECURSION_DESIRED,
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questions: [{
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type: 'A',
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name: 'google.com'
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}]
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});
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socket.on('message', function (message, rinfo) {
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console.log(rinfo);
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console.log(dnsPacket.decode(message)); // prints out a response from google dns
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socket.close();
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});
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socket.send(buf, 0, buf.length, 53, '8.8.8.8');
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