app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');

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

var options = {
  db: { native_parser: true },
  server: { poolSize: 5 },
  replset: { rs_name: 'tweeter' }
};
mongoose.connect('mongodb://localhost/fileupload', options, function(err, c) {
  console.log(err, "error");
});


var app = express();

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

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(session({ resave: false, saveUninitialized: true, secret: 'blablablabla', cookie: { maxAge: 86400 } }));
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/users', users);
app.use('/blogs', blogs);

// 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

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;

log

> [email protected] start /home/crotona/dev/javascript/nodejz/loadtest
> nodemon ./bin/www

27 Oct 12:50:43 - [nodemon] v1.3.7
27 Oct 12:50:43 - [nodemon] to restart at any time, enter `rs`
27 Oct 12:50:43 - [nodemon] watching: *.*
27 Oct 12:50:43 - [nodemon] starting `node ./bin/www`
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3000' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3001' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3001' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3002' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3002' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3002' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3003' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3003' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3003' } } }
my spawn
{ '0': 'node',
  '1': [ './bin/server' ],
  '2': { env: { PORT: '3003' } } }
events.js:141
      throw er; // Unhandled 'error' event
      ^

Error: spawn node ENOENT
    at exports._errnoException (util.js:837:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:178:32)
    at onErrorNT (internal/child_process.js:344:16)
    at doNTCallback2 (node.js:429:9)
    at process._tickCallback (node.js:343:17)
    at Function.Module.runMain (module.js:477:11)
    at startup (node.js:117:18)
    at node.js:951:3
27 Oct 12:50:44 - [nodemon] app crashed - waiting for file changes before starting...

server.js

#!/usr/bin/env node

var app = require('../app');
var debug = require('debug')('file-upload:server');
var http = require('http');


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);
}

www.js

#!/usr/bin/env node

/**
 * Module dependencies.
 */

var process = require('process');
var child_process = require('child_process');

var ports = ['3000', '3001', '3002', '3003'];

ports.forEach(function(port) {
  var oldSpawn = child_process.spawn;

  function newSpawn() {
    console.log('my spawn');
    console.log(arguments);
    return oldSpawn.apply(this, arguments);
  };

  child_process.spawn = newSpawn;

  var child = newSpawn('node', ['./bin/server'], { env: { PORT: port}});

  child.stdout.on('data', function() {
    console.log('data', arguments);
  });

  child.on('exit', function() {
    console.log('child exit with code', arguments);
  })
});