http with require('net')

index.js

var net = require('net')
var concat = require('concat-stream')
var pump = require('pump')

var reqBody = new Buffer(`GET / HTTP/1.1
User-Agent: curl/7.37.1
Host: localhost:8080
Accept: */*

`)
  
http('localhost', 8080, reqBody, function (err, resp) {
  if (err) throw err
  console.log(resp.toString())
})

function http (host, port, body, cb) {
  var socket = net.connect(port, host, function connected () {
    // results in http response data being printed out correctly
    socket.write(body)
    socket.end()
    
    // http response data never gets printed
    // socket.end(body)
  })
  
  var concatter = concat(function (resp) {
    cb(null, resp)
  })

  pump(socket, concatter, function (err) {
    if (err) cb(err)
  })
}