Node.js Re-connecting Socket

client-socket-reconnect.js

//
// Simple example of using net.Socket but here we capture the
// right events and attempt to re-establish the connection when
// is is closed either because of an error establishing a
// connection or when the server closes the connection.
//

// Requires
var net = require('net');

// Create socket
var port = 55555;
var host = 'localhost';
var timeout = 1000;
var retrying = false;

// Functions to handle socket events
function makeConnection () {
    socket.connect(port, host);
}
function connectEventHandler() {
    console.log('connected');
    retrying = false;
}
function dataEventHandler() {
    console.log('data');
}
function endEventHandler() {
    // console.log('end');
}
function timeoutEventHandler() {
    // console.log('timeout');
}
function drainEventHandler() {
    // console.log('drain');
}
function errorEventHandler() {
    // console.log('error');
}
function closeEventHandler () {
    // console.log('close');
    if (!retrying) {
        retrying = true;
        console.log('Reconnecting...');
    }
    setTimeout(makeConnection, timeout);
}

// Create socket and bind callbacks
var socket = new net.Socket();
socket.on('connect', connectEventHandler);
socket.on('data',    dataEventHandler);
socket.on('end',     endEventHandler);
socket.on('timeout', timeoutEventHandler);
socket.on('drain',   drainEventHandler);
socket.on('error',   errorEventHandler);
socket.on('close',   closeEventHandler);

// Connect
console.log('Connecting to ' + host + ':' + port + '...');
makeConnection();