77 lines
1.6 KiB
JavaScript
77 lines
1.6 KiB
JavaScript
'use strict';
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var dgram = require('dgram');
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var socket = dgram.createSocket({
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type: 'udp4'
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, reuseAddr: true
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});
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var dns = require('dns-js');
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//var DNSPacket = dns.DNSPacket;
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var broadcast = '224.0.0.251'; // mdns
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var port = 5353; // mdns
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// ex: pad('11111', 8, '0')
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function pad(str, len, ch) {
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while (str.length < len) {
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str = ch + str;
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}
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return str;
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}
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function binaryAgent(str) {
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var binString = '';
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str.split(' ').map(function(bin) {
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binString += String.fromCharCode(parseInt(bin, 2));
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});
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return binString;
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}
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socket.on('message', function (message, rinfo) {
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console.log('Received %d bytes from %s:%d\n',
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message.length, rinfo.address, rinfo.port);
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//console.log(msg.toString('utf8'));
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message.forEach(function(byte){
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console.log(pad(byte.toString(2), 8,'0'));
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});
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// console.log(message.toString('hex'));
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// console.log(message.toString('ascii'));
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var packets;
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try {
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packets = dns.DNSPacket.parse(message);
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}
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catch (er) {
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//partial, skip it
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console.error(er);
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return;
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}
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if (!Array.isArray(packets)) { packets = [packets]; }
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require('./cloud-respond.js').respond(socket, packets, rinfo);
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// console.log(packets);
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// console.log('\n');
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});
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socket.bind(port, function () {
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console.log('***********************************')
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console.log('bound on', port);
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console.log('***********************************')
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console.log('bound on', this.address());
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socket.setBroadcast(true);
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socket.addMembership(broadcast);
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// buf.forEach parseInt(byte.toString('hex'), 16).toString(2);
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});
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