request-promise-simple-sample.js

const rp = require('request-promise');

const options = {
  uri: 'https://ntp-a1.nict.go.jp/cgi-bin/time',
  transform: (body, response, resolveWithFullResponse) => {
    return new Promise((resolve, reject) => {
      if (response.statusCode !== 200) reject();
      resolve(response.body);
    });
  }
}

const promiseList = [0,1,2,3,4].map(() => rp(options));

console.log('start');
Promise.all(promiseList).then((data) => console.log('done:', data));
console.log('...');

/*
$ node request-promise-simple-sample.js
start
...
done: [ 'Thu Jun  9 15:19:55 2016 JST\n',
  'Thu Jun  9 15:19:55 2016 JST\n',
  'Thu Jun  9 15:19:55 2016 JST\n',
  'Thu Jun  9 15:19:55 2016 JST\n',
  'Thu Jun  9 15:19:55 2016 JST\n' ]
*/