mem leak ?

gistfile1.js

require('webkit-devtools-agent');

var
  http = require('http'),
  extensions = ['com', 'ac', 'ad', 'ae', 'com.af', 'com.ag', 'com.ai', 'am', 'it.ao', 'com.ar', 'as', 'at', 'com.au', 'az', 'ba', 'com.bd', 'be', 'bf', 'bg', 'com.bh', 'bi', 'bj', 'com.bn', 'com.bo', 'com.br', 'bs', 'co.bw', 'com.by', 'com.bz', 'ca', 'com.kh', 'cc', 'cd', 'cf', 'cat', 'cg', 'ch', 'ci', 'co.ck', 'cl', 'cm', 'cn', 'com.co', 'co.cr', 'com.cu', 'cv', 'cz', 'de', 'dj', 'dk', 'dm', 'com.do', 'dz', 'com.ec', 'ee', 'com.eg', 'es', 'com.et', 'fi', 'com.fj', 'fm', 'fr', 'ga', 'gd', 'ge', 'gf', 'gg', 'com.gh', 'com.gi', 'gl', 'gm', 'gp', 'gr', 'com.gt', 'gy', 'com.hk', 'hn', 'hr', 'ht', 'hu', 'co.id', 'iq', 'ie', 'co.il', 'im', 'co.in', 'io', 'is', 'it', 'je', 'com.jm', 'jo', 'co.jp', 'co.ke', 'com.kh', 'ki', 'kg', 'co.kr', 'com.kw', 'kz', 'la', 'com.lb', 'com.lc', 'li', 'lk', 'co.ls', 'lt', 'lu', 'lv', 'com.ly', 'co.ma', 'md', 'me', 'mg', 'mk', 'ml', 'mn', 'ms', 'com.mt', 'mu', 'mv', 'mw', 'com.mx', 'com.my', 'co.mz', 'com.na', 'ne', 'com.nf', 'com.ng', 'com.ni', 'nl', 'no', 'com.np', 'nr', 'nu', 'co.nz', 'com.om', 'com.pa', 'com.pe', 'com.ph', 'com.pk', 'pl', 'pn', 'com.pr', 'ps', 'pt', 'com.py', 'com.qa', 'ro', 'rs', 'ru', 'rw', 'com.sa', 'com.sb', 'sc', 'se', 'com.sg', 'sh', 'si', 'sk', 'com.sl', 'sn', 'sm', 'so', 'st', 'com.sv', 'td', 'tg', 'co.th', 'com.tj', 'tk', 'tl', 'tm', 'to', 'com.tn', 'com.tr', 'tt', 'com.tw', 'co.tz', 'com.ua', 'co.ug', 'co.uk', 'us', 'com.uy', 'co.uz', 'com.vc', 'co.ve', 'vg', 'co.vi', 'com.vn', 'vu', 'ws', 'co.za', 'co.zm', 'co.zw'],
  nbloop = 20, nblaunch = 2, done = 0, todo = nblaunch*nbloop*extensions.length;

console.log('We should do '+ todo +' requests');

// show memused and progress while running
setInterval(status, 5000);status();

// 2 launch
loop();setTimeout(loop, 10000);

function loop() {
  console.log('Starting a new request loop');
  for(var i = 0; i < nbloop; i++) {
    getall();
  }
}

function getall() {
  // create a big buffer
  var megabig = new Big();

  // this should not trigger a memory leak but it does when using http.get
  function cb() {
    done+=1;
    return megabig;
  }

  extensions.forEach(function(ext) {
    // using setTimeout instead of http.get shows no mem leak
    // setTimeout(cb, 10);

    var rq = http.get({
      hostname: 'www.google.' + ext,
      pathname: '/index.html?' + Math.random(),
      port: 80,
      protocol: 'http:'
    }, cb);
    rq.end();
  });
}

function Big() {
  this.yo = (new Buffer(1 * 1024 * 1024 * 3)).toString();
}

function status() {
  console.log((process.memoryUsage().heapUsed/1024/1024).toFixed() + 'MB used');
  console.log('Done: '+ done +'/'+ todo);
  if (done === todo) {
    console.log('all requests done, memory should be collected by now ?')
  }
}

Duh ?

http://nodejs.org/api/http.html#http_http_get_options_callback

Since most requests are GET requests without bodies, Node provides this convenience method. The only difference between this method and http.request() is that it sets the method to GET and calls req.end() automatically.

Do not understand, what are the MB results after this change ?