SSL Handshake session/cache issue

gistfile1.txt

var request       = require('request')

var r = request({
  url: 'https://google.com/',
  method: 'HEAD',
  gzip: true,
  followRedirect: false,
	followAllRedirects: false
});

r.on('response', function(res) {
  certDetails = (res.req.connection.getPeerCertificate())
  console.log('*********1st Request**********');
  console.log(certDetails);
})



setTimeout (function() {
  var r = request({
    url: 'https://google.com/',
    method: 'HEAD',
    gzip: true,
    followRedirect: false,
  	followAllRedirects: false
  });

  r.on('response', function(res) {
    certDetails = (res.req.connection.getPeerCertificate()) // works
    console.log('*********2nd Request**********');
    console.log(certDetails);
  })
}, 5000)