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Michael Morrison 2013-07-10 05:02:48 -05:00
commit 8552d0674f
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index.js Normal file
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var dgram = require('dgram'),
EventEmitter = require('events').EventEmitter,
util = require('util'),
dns = require('dns');
var activeQueries = [];
var udpSocket = dgram.createSocket('udp4');
udpSocket.unref();
udpSocket.bind(21943);
udpSocket.on('message', function(buffer, rinfo) {
for(var i = 0; i < activeQueries.length; i++) {
var query = activeQueries[i];
if(query.address != rinfo.address) continue;
if(query.port != rinfo.port) continue;
query._udpResponse(buffer);
break;
}
});
module.exports = {
query: function(options) {
var type = (options.type || '').replace(/\W/g,'');
var protocol = require('./protocols/'+type);
var query = new protocol();
query.udpSocket = udpSocket;
query.type = type;
query.options = options;
activeQueries.push(query);
query.on('finished', function() {
var i = activeQueries.indexOf(query);
if(i >= 0) activeQueries.splice(i, 1);
});
process.nextTick(function() {
query.start();
});
return query;
}
};