(API) Hinet SMS Sender in Node.js

hinet_sms.js

var net = require('net');
var bufferpack = require('bufferpack');
var ACCOUNT = 'ACCOUNT';
var PASSWORD = 'PASSWORD';
var MOBILE = 'TARGET_NUMBER';
var MESSAGE = 'MESSAGE';

var client = new net.Socket();

client.on('data', function (data) {
  var response = data.toString('utf8');

  // Send Message
  if (response.match('ID/Password check successful')) {
    var sender = new Buffer(266);
    sender.fill("\0", 0, 266);
    bufferpack.packTo('B', sender, 0, [1]);
    bufferpack.packTo('B', sender, 1, [4]);
    bufferpack.packTo('B', sender, 2, [1]);
    bufferpack.packTo('B', sender, 3, [0]);
    bufferpack.packTo('B', sender, 4, [14]);
    bufferpack.packTo('B', sender, 5, [Math.min(new Buffer(MESSAGE).length, 160)]);
    sender.write(MOBILE + "\0" + '01' + "\0", 6);
    sender.write(MESSAGE, 106);
    client.write(sender);
  }
});

client.on('close', function () {
  console.log('Connection closed.')
});

client.connect(8000, '202.39.54.130', function () {
  // Login
  var auth = new Buffer(266);
  auth.fill("\0", 0, 266);
  bufferpack.packTo('B', auth, 0, [0]);
  bufferpack.packTo('B', auth, 1, [1]);
  bufferpack.packTo('B', auth, 2, [0]);
  bufferpack.packTo('B', auth, 3, [18]);
  bufferpack.packTo('B', auth, 4, [0]);
  auth.write(ACCOUNT + "\0" + PASSWORD + "\0", 6);
  client.write(auth);
});