text: /**
   * @author Jonathan Cardoso Machado
   * @license MIT
   * @copyright 2015-2016, Jonathan Cardoso Machado
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
   * of the Software, and to permit persons to whom the Software is furnished to do
   * so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all
   * copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
   * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
   * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  /**
   * Example showing how to use the Multi handle to make async requests.
   */
  var Easy = require('../lib/Easy'),
    Multi = require('../lib/Multi'),
    urls = ['http://google.com', 'http://bing.com', 'http://msn.com', 'http://ask.com/'],
    multi = new Multi(),
    finished = 0,
    handles = [],
    handlesData = [],
    handle;
  
  multi.onMessage(function(err, handle, errCode) {
    var responseCode = handle.getInfo('RESPONSE_CODE').data,
      handleData = handlesData[handles.indexOf(handle)],
      handleUrl = urls[handles.indexOf(handle)],
      responseData = '',
      i,
      len;
  
    console.log('# of handles active: ' + multi.getCount());
  
    if (err) {
      console.log(handleUrl + ' returned error: "' + err.message + '" with errcode: ' + errCode);
    } else {
      for (i = 0, len = handleData.length; i < len; i++) {
        responseData += handleData[i].toString();
      }
  
      console.log(handleUrl + ' returned response code: ' + responseCode);
  
      console.log(handleUrl + ' returned response body: ' + responseData);
    }
  
    multi.removeHandle(handle);
    handle.close();
  
    if (++finished === urls.length) {
      console.log('Finished all requests!');
      multi.close();
    }
  });
  
  /**
   * @param {Buffer} data
   * @param {Number} n
   * @param {Number} nmemb
   * @returns {number}
   */
  function onData(data, n, nmemb) {
    //this === the handle
    var key = handles.indexOf(this);
  
    handlesData[key].push(data);
  
    return n * nmemb;
  }
  
  for (var i = 0, len = urls.length; i < len; i++) {
    handle = new Easy();
    handle.setOpt('URL', urls[i]);
    handle.setOpt('FOLLOWLOCATION', true);
    handle.setOpt('WRITEFUNCTION', onData);
  
    handlesData.push([]);
    handles.push(handle);
  
    multi.addHandle(handle);
  }
  