const { fetch } = require('fetch-h2');
//const fetch = require('node-fetch-h2');

var args = process.argv.slice(2);
const N = args.length && !isNaN(parseInt(args[0])) ? parseInt(args[0]) : 100;

console.log(`running ${N} paralled requests...`)

const TEST_URL = 'https://httpbin.org/bytes/'; // HTTP2

(async function () {
  // generete array of 'randomized' urls
  const urls = Array.from({ length: N }, () => Math.floor(Math.random() * N)).map((num) => `${TEST_URL}${num}`);

  // establish initial connection
  // (workround for https://github.com/grantila/fetch-h2/issues/39)
  await (await fetch(`${TEST_URL}${N}`)).arrayBuffer();

  const ts0 = Date.now();

  // send requests
  const responses = await Promise.all(urls.map((url) => fetch(url)));

  // read bodies
  await Promise.all(responses.map((resp) => resp.arrayBuffer()));

  const ok = responses.filter((res) => res.ok);
  if (ok.length !== N) {
    console.log(`failed requests: ${N - ok.length}`);
  }

  const ts1 = Date.now();

  console.log(`Elapsed time: ${ts1 - ts0} ms`);
}());