base64 decode and decompress nodejs

gistfile1.txt

const http = require('http');
var zlib = require('zlib');

http.createServer((request, response) => {
  const { headers, method, url } = request;

  console.log(request.headers);

  let body = [];
  request.on('error', (err) => {
    console.error(err);
  }).on('data', (chunk) => {
    body.push(chunk);
  }).on('end', () => {

    var concated = Buffer.concat(body).toString();

    body = Buffer.from(concated, 'base64')

    zlib.inflate(body, function(aa,bb) { 
      console.log(bb,bb.toString()) 
    })

  });
}).listen(3000); // Activates this server, listening on port 8080.