code: public function setSecurePort($value)
      {
          if ($value != $this->_securePort) {
              $this->_securePort = (int) $value;
              $this->_hostInfo = null;
          }
      }
docs: Sets the port to use for secure requests.
  This setter is provided in case a custom port is necessary for certain
  server configurations.
  @param int $value port number.