first commit

dns_test

@@ -0,0 +1,25 @@
+'use strict';
+
+var dgram = require('dgram');
+var dnsjs = require('dns-js');
+
+// SO_REUSEADDR and SO_REUSEPORT are set because
+// the system mDNS Responder may already be listening on this port
+
+var socket = dgram.createSocket({
+  type: 'udp4'
+, reuseAddr: true
+});
+
+var broadcast = '224.0.0.251'; // mdns
+var port = 5353;               // mdns
+
+socket.bind(port, function () {
+  console.log('bound on', port);
+
+  // mDNS must listen on the broadcast membership group address
+  socket.setBroadcast(true);
+  socket.addMembership(broadcast);
+
+  // ... more stuff
+});