Node.js中DNS模块学习总结(2)

const dns = require('dns'); let url = 'www.qq.com'; dns.resolve(url, 'A', (err, addresses) => { console.log(addresses); // IPv4地址 [ '103.7.30.123' ] }); dns.resolve(url, 'AAAA', (err, addresses) => { console.log(addresses); // IPv6地址 [ '240e:e1:8100:28::2:16' ] }); dns.resolveMx('qq.com', (err, addresses) => { console.log(addresses); // 邮件交换服务器记录 // [ { exchange: 'mx2.qq.com', priority: 20 }, // { exchange: 'mx1.qq.com', priority: 30 }, // { exchange: 'mx3.qq.com', priority: 10 } ] }); dns.resolveTxt('qq.com', (err, addresses) => { console.log(addresses); // 域名附加的描述记录 // [ [ 'v=spf1 include:spf.mail.qq.com -all' ] ] }); dns.resolveSrv('www.baidu.com', (err, addresses) => { console.log(addresses); // 服务记录 // [] }); dns.resolveNs('www.github.com', (err, addresses) => { console.log(addresses); // 域名服务器记录 // [ 'ns-421.awsdns-52.com', // 'ns-520.awsdns-01.net', // 'ns1.p16.dynect.net', // 'ns2.p16.dynect.net', // 'ns3.p16.dynect.net', // 'ns4.p16.dynect.net', // 'ns-1283.awsdns-32.org', // 'ns-1707.awsdns-21.co.uk' ] }); dns.resolveCname('www.163.com', (err, addresses) => { console.log(addresses); // 获取别名记录 // [ 'www.163.com.lxdns.com' ] }); dns.lookup('google.com', 4, (err, address, family) => { // 查询IP地址 // address，查询到的地址 // family，IPv4或IPv6 console.log(address);// 172.217.27.142 console.log(family);// 4 }); dns.lookup('google.com', 6, (err, address, family) => { console.log(address);// 2404:6800:4008:803::200e console.log(family);// 6 }); dns.reverse('203.188.200.67', (err, domain) => { // 反向解析IP地址 console.log(domain); // [ 'media-router-fp1.prod.media.vip.tp2.yahoo.com' ] });

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