1-server.sh

#! /bin/bash

# use either the index.js to just write a's at an interval
node index

# or buffer.js to write substantial data
node buffer

buffer.js

var http = require('http');

var server = http.createServer(function(request, response) {
  response.writeHead(200, {
    'Content-Type': 'text/plain',
    'Transfer-Encoding': 'chunked'
  });

  // Write 1K of "a"s every 100ms for 60 seconds  
  var time = Date.now() + 60000;
  var buffer = new Buffer(1024);
  
  buffer.fill('a');
    
  var interval = setInterval(function() {
    if (Date.now() > time) {
      response.end();
      return clearInterval(interval);
    }

    response.write(buffer);
  }, 100);
});

server.listen(5000);
console.log('listening on port 5000');

index.js

var http = require('http');

var server = http.createServer(function(request, response) {
  response.writeHead(200, { 'Content-Type': 'text/plain' });
  
  // Write an "a" to response every 100ms for 60 seconds
  var time = Date.now() + 60000;
  var interval = setInterval(function() {
    if (Date.now() > time) {
      response.end();
      return clearInterval(interval);
    }

    response.write('a');
  }, 100);
});

server.listen(5000);
console.log('listening on port 5000');