def _fetch_index_package_info(self, package_name, current_version):
        """
        :type package_name: str
        :type current_version: version.Version
        """

        try:
            package_canonical_name = package_name
            if self.PYPI_API_TYPE == 'simple_html':
                package_canonical_name = canonicalize_name(package_name)
            response = requests.get(self.PYPI_API_URL.format(package=package_canonical_name), timeout=15)
        except HTTPError as e:  # pragma: nocover
            return False, e.message

        if not response.ok:  # pragma: nocover
            return False, 'API error: {}'.format(response.reason)

        if self.PYPI_API_TYPE == 'pypi_json':
            return self._parse_pypi_json_package_info(package_name, current_version, response)
        elif self.PYPI_API_TYPE == 'simple_html':
            return self._parse_simple_html_package_info(package_name, current_version, response)
        else:  # pragma: nocover
            raise NotImplementedError('This type of PYPI_API_TYPE type is not supported')
:type package_name: str
        :type current_version: version.Version