udp_server

var dgram = require('dgram');
var port = 3000;
var defaultSize = 65;

function Server()
{
    var clients = [];
    var socket = dgram.createSocket('udp4');

    socket.on('message', function (msg, rinfo) {
        var clientId, message;

        message = msg.toString('ascii');
        console.log(message);

        clientId = rinfo.address + ':' + rinfo.port;
        if(message.match('<JOIN>')) {
            console.log('Client connected: ', clientId);

            if ( !clients[clientId] ) {
                clients[clientId] = rinfo;
            }
            return;
        }

        if ( message.match('<EXIT>') ) {
            console.log('Client disconnected: ', clientId);
            if ( clients[clientId] ) {
                delete clients[clientId];
            }
            return;
        }

        for ( var client in clients ) {
            if ( client !== clientId) {
                client = clients[client];

                socket.send(new Buffer(message, 'ascii'), 0, Buffer.byteLength(message, 'ascii'), client.port, client.address, function ( err, bytes ) {
                    if ( err ) console.error(err);
                    console.log('Client sent: ', bytes);
                });
            }
        }

        /* ТОВА ТРЯБВА ДА ГО ИМА ЗА ДА ОСЪЩЕСТВЯ ВРЪЗКА И ДА МОГА ДА ПОЛЗВАМ СОКЕТА */
        //socket.send(msg, 0, msg.length, rinfo.port, rinfo.address, function ( err, bytes ) {
        //  if ( err ) throw err;
        //});
    });

    socket.on('listening', function () {
        console.log('Server ready: ', socket.address());
    });

    socket.on('close', function () {
        console.log('Socket closed');
    });

    socket.on('error', function ( err ) {
        console.error('Server ERROR: ', err);
        socket.close();
    });

    socket.bind(port, '127.0.0.1');
}