quick tcp connection

27.js

exports.port = 10010;

var net = require('net');
var tls = require('tls');
var j = 0;
var k = 0;

function createTCP () {
  var start = Date.now();
  var client = net.connect(993, 'imap.qq.com', function () {
    k++;
    console.log('#%d, spent: %d, k: %d', j, Date.now() - start, k);
    client.destroy();
  });
  client.on('error', function (e) {
    //k++;
    console.log(e);
    client.destroy();
  })
};

setInterval(function () {
  if (j++>100) {
    if (k > 1000) {
      console.log('total: %d, total: %d', process.uptime(), k);
      process.exit(0);
    }
    return;
  };
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
  createTCP();
}, 100)

quickTCP.js

var net = require('net');
var tls = require('tls');
var j   = 0;

function createTCP (callback) {
  if (j++ > 1000) {
    console.log(process.uptime());
    return process.exit();
  }
  var start = Date.now();
  var client = net.connect(993, 'imap.qq.com', function () {
    console.log('#%d, spent: %d', j, Date.now() - start);
    callback(createTCP);
  })
};


for (var i=0; i<10; i++) {
  createTCP(createTCP);
  createTCP(createTCP);
  createTCP(createTCP);
  createTCP(createTCP);
}