Node.js Playing With Streams (stream.pause)

client.js

// This is a quick gist to validate that data transmitted when a response stream is paused is not lost 

const request = require('request');

const stream = request.get('http://127.0.0.1:3000/');

console.log('fetching...');

stream.on('response', response => {
  console.log('got response');
  response.pause();

  response.on('end', () => {
    console.log('end');
  });

  setTimeout(() => {
    console.log('reading stream');

    /*
     * Uncomment the resume call and the 'end' event will be triggered and the stream will be read as chunks
     * Leave it commented and the chunk willbe read as a whole sentence
     */
    // response.resume();

    let chunk;
    while (null !== (chunk = response.read())) {
      console.log(`Received ${chunk}`);
    }
  }, 10000);
});

server.js

const express = require('express');
const app = express();
const port = 3000;

app.get('/', (req, res) => {
  const str = 'hello';
  const write = (count = 0) => {
    if (count >= str.length) {
      console.log('ending stream');
      res.end();
    } else {
      console.log(`writing ${str.charAt(count)}`);
      res.write(str.charAt(count));
      setTimeout(() => write(count + 1), 500);
    }
  };

  write();
});

app.listen(port, () => console.log(`Example app listening on port ${port}!`));