mdns-discovery

###mdns Multicast DNS



####Some Examples:

Find all Amazon Fire TV devices on the local network:
``js

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

var mdns = new Mdns({
timeout: 4,
returnOnFirstFound: true,
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:
`js
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:
`js
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 ();
`

Filter:
`js
var mdns = require('mdns-discovery')();

var mdns = Mdns({
timeout: 3,
name: '_amzn-wplay._tcp.local',
find: 'amzn.dmgr:'
});

var allreadyUsed = [ {ip: '192.168.1.94'}, {ip: '192.168.1.91'} ];

mdns.setFilter('ip', allreadyUsed).run (function(res) {
res.forEach(function(v) {
console.log(v);
});
});
``