chunked-server.js

const port = 8002;
const http = require('http');

const http_handler = function(req, res) {
  let request = '', count = 0;
  req.on('data', chunk => request += chunk);
  req.on('end', function(ev) {
    res.writeHead(200);
    const f = function() {
      res.write('hi\n');
      if (count++ >= 10) {
        res.end();
      } else {
        setTimeout(f, 500)
      }
    };
    setTimeout(f, 500);
  });
};

http.createServer(http_handler).listen(port, function(err) {
  if (err) return console.log('Error starting server:', err);
  console.log(`Server is listening on port ${port}`)
});