'use strict'; const common = require('../common'); const dnstools = require('../common/dns'); const dns = require('dns'); const assert = require('assert'); const dgram = require('dgram'); const dnsPromises = dns.promises; const answers = [ { type: 'A', address: '1.2.3.4', ttl: 123 }, { type: 'AAAA', address: '::42', ttl: 123 }, { type: 'MX', priority: 42, exchange: 'foobar.com', ttl: 124 }, { type: 'NS', value: 'foobar.org', ttl: 457 }, { type: 'TXT', entries: [ 'v=spf1 ~all', 'xyz\0foo' ] }, { type: 'PTR', value: 'baz.org', ttl: 987 }, { type: 'SOA', nsname: 'ns1.example.com', hostmaster: 'admin.example.com', serial: 156696742, refresh: 900, retry: 900, expire: 1800, minttl: 60 }, { type: 'CAA', critical: 128, issue: 'platynum.ch' }, ]; const server = dgram.createSocket('udp4'); server.on('message', common.mustCall((msg, { address, port }) => { const parsed = dnstools.parseDNSPacket(msg); const domain = parsed.questions[0].domain; assert.strictEqual(domain, 'example.org'); server.send(dnstools.writeDNSPacket({ id: parsed.id, questions: parsed.questions, answers: answers.map((answer) => Object.assign({ domain }, answer)), }), port, address); }, 2)); server.bind(0, common.mustCall(async () => { const address = server.address(); dns.setServers([`127.0.0.1:${address.port}`]); validateResults(await dnsPromises.resolveAny('example.org')); dns.resolveAny('example.org', common.mustSucceed((res) => { validateResults(res); server.close(); })); })); function validateResults(res) { // TTL values are only provided for A and AAAA entries. assert.deepStrictEqual(res.map(maybeRedactTTL), answers.map(maybeRedactTTL)); } function maybeRedactTTL(r) { const ret = { ...r }; if (!['A', 'AAAA'].includes(r.type)) delete ret.ttl; return ret; }