server.js

var bodyParser = require('body-parser');
var cookieParser = require('cookie-parser');
var debug = require('debug')('redmine-charts:server');
var express = require('express');
var favicon = require('serve-favicon');
var http = require('http');
var logger = require('morgan');
var path = require('path');
require('coffee-script/register');

var routes = require('./routes/index');

var app = express();

// view engine setup
app.set('views', __dirname);

// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

app.use('/', routes);
app.use(express.static(path.join(__dirname, 'public')));

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

app.use(function(err, req, res, next) {
  if (!err instanceof Error) {
    return next(err);
  }
  res.status(err.status);
  res.json({message: err.message});
  next();
});

/**
 * Get port from environment and store in Express.
 */

var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

/**
 * Create HTTP server.
 */

var server = http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
  var port = parseInt(val, 10);

  if (isNaN(port)) {
  // named pipe
  return val;
  }

  if (port >= 0) {
  // port number
  return port;
  }

  return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
  if (error.syscall !== 'listen') {
  throw error;
  }

  var bind = typeof port === 'string' ?
    'Pipe ' + port :
    'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
  case 'EACCES':
    console.error(bind + ' requires elevated privileges');
    process.exit(1);
    break;
  case 'EADDRINUSE':
    console.error(bind + ' is already in use');
    process.exit(1);
    break;
  default:
    throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  var addr = server.address();
  var bind = typeof addr === 'string' ?
    'pipe ' + addr :
    'port ' + addr.port;
  debug('Listening on ' + bind);
}