NodeJS通过魔术封包唤醒局域网计算机实例 NodeJS通过魔术封包唤醒局域网

【NodeJS通过魔术封包唤醒局域网计算机实例】今天分享下NodeJS如何通过魔术封包唤醒局域网计算机的代码吧。

/** * 通过魔术封包唤醒局域网计算机 * @author 若海 * @website http://www.rehiy.com * @wiki https://en.wikipedia.org/wiki/Wake-on-LAN * @docs http://support.amd.com/TechDocs/20213.pdf */const net = require('net'); const udp = require('dgram'); /** * 创建魔术封包 * @param {string} mac 网卡MAC地址 * @returns {Buffer} */function createMagicPacket(mac) {mac = mac.replace(/[^0-9a-fA-F]/g, ''); if (mac.length != 12) {throw new Error(`Bad MAC address "${mac}"`); }const bufMac = Buffer.from(mac, 'hex'); let bufRes = Buffer.alloc(6, 0xff); for (let i = 0; i < 16; i++) {bufRes = Buffer.concat([bufRes, bufMac]); }return bufRes; }/** * 通过网络唤醒 * @param {string} mac 网卡MAC地址 * @param {object} options 可选项 * @returns {Promise} */function wakeOnLAN(mac, options) {options = Object.assign({address: '255.255.255.255',port: 7}, options); return new Promise((resolve, reject) => {const packet = createMagicPacket(mac); const socket = udp.createSocket(net.isIPv6(options.address) ? 'udp6' : 'udp4'); socket.on('error', function (err) {socket.close(); reject(err); }); socket.once('listening', function () {socket.setBroadcast(true); }); socket.send(packet,0,packet.length,options.port,options.address,function (err, res) {socket.close(); if (err) {return reject(err); }resolve(res == packet.length); }); }); }

来个例子~