mdns-discovery

###mnds Multicast DNS

####Some Examples:

Find all Amazon Fire TV devices on the local network:

var Mdns = require('mdns-discovery');

var mdns = new Mdns({ timeout: 5, name: '_amzn-wplay._tcp.local', find: 'amzn.dmgr:'});
mdns.run (function(res) {
    res.forEach(enry) {
       console.log(entry);
    }
});

List all mdns questions and answers for 10 seconds:

var Mdns = require('mdns-discovery');

var mdns = new Mdns({ timeout: 10 });
mdns.on('packet', function (packets, rinfo) {
    if (packets.answers) packets.answers.forEach(function(packet, i) {
        console.log(`A: ${rinfo.address} - packet[${i}]=${packet.name}, type=${packet.type}, class=${packet.class}, ttl=${packet.ttl}}`);
    });
    if (packets.questions) packets.questions.forEach(function(packet, i) {
        console.log(`Q: ${rinfo.address} - packet[${i}]=${packet.name}, type=${packet.type}, class=${packet.class}, ttl=${packet.ttl}}`);
    });
});
mdns.run ();

Presence:

var mdns = require('mdns-discovery')();

mdns.onIP('192.168.1.31', function (packet, rinfo) {
    if (packet.answers.length) {
        console.log(rinfo.address + ' is present');
    }
}).run ();