Simple Node UDP Server and Client

server.js

var PORT = 33333;
var HOST = '0.0.0.0';

var dgram = require('dgram');
var server = dgram.createSocket('udp4');

server.on('listening', function() {
  var address = server.address();
 console.log('UDP Server listening on ' + address.address + ':' + address.port);
});

server.on('message', function(message, remote) {
 console.log(remote.address + ':' + remote.port +' - ' + message);
});

server.bind(PORT, HOST);



var PORT = 33333;
var HOST = '127.0.0.1';

var dgram = require('dgram');
var message = new Buffer('My KungFu is Good!');

var client = dgram.createSocket('udp4');

var efun = function(err, bytes) {
    if (err) throw err;
    console.log('UDP message sent to ' + HOST +':'+ PORT);
    client.close();
  };
client.send(message, 0, message.length, PORT, HOST, efun);