function getConnection () {
const options = {
user: 'root',
password: 'pwd',
database: 'dbname',
socketPath: '/cloudsql/project-name:us-central1:name',
ssl: {
   ca: fs.readFileSync(__dirname + '/server-ca.pem'),
   cert: fs.readFileSync(__dirname + '/client-cert.pem'),
   key: fs.readFileSync(__dirname + '/client-key.pem')
}
};

Handshake.prototype['HandshakeInitializationPacket'] = function(packet) {
  this._handshakeInitializationPacket = packet;

  this._config.protocol41 = packet.protocol41;

  var serverSSLSupport = packet.serverCapabilities1 & ClientConstants.CLIENT_SSL;

  if (this._config.ssl) {
    if (!serverSSLSupport) {
      var err = new Error('Server does not support secure connection');

      err.code = 'HANDSHAKE_NO_SSL_SUPPORT';
      err.fatal = true;

      this.end(err);
      return;
    }