use the url for creation of domain and fetch cookies

        - init cache dir by the url domain as ``<base>/domain``
        - save the cookies to file ``<base>/domain/cookie.txt``
        - init ``headers.get/post/json`` with response info
        - init ``site_dir/site_raw/site_media``

        :param url:
        :type url:
        :param force_spawn:
        :type force_spawn:
        :return:
        :rtype:

def spawn(self, url, force_spawn=False):
        """use the url for creation of domain and fetch cookies

        - init cache dir by the url domain as ``<base>/domain``
        - save the cookies to file ``<base>/domain/cookie.txt``
        - init ``headers.get/post/json`` with response info
        - init ``site_dir/site_raw/site_media``

        :param url:
        :type url:
        :param force_spawn:
        :type force_spawn:
        :return:
        :rtype:
        """
        _url, domain = self.get_domain_home_from_url(url)
        if not _url:
            return False

        self.cache['site_dir'] = os.path.join(self.cache['base'], self.domain)
        for k in ['raw', 'media']:
            self.cache['site_' + k] = os.path.join(self.cache['site_dir'], k)
            helper.mkdir_p(self.cache['site_' + k], True)

        ck_pth = os.path.join(self.cache['site_dir'], 'cookie.txt')
        helper.mkdir_p(ck_pth)

        name = os.path.join(self.cache['site_raw'], 'homepage')
        # not force spawn and file ok
        if not force_spawn and helper.is_file_ok(name):
            # zlog.debug('{} exist!'.format(name))
            self.sess.cookies = self.load_cookies(ck_pth)
            return True
        else:
            zlog.debug('{} not exist!'.format(name))

        res = self.sess.get(url, headers=self.__header__)
        if res.status_code != 200:
            return False
        if res:
            helper.write_file(res.content, name)
        # self.load(url)

        for k, v in self.headers.items():
            self.headers[k] = res.request.headers

        self.dump_cookies(cookies=self.sess.cookies, save_to=ck_pth)

        return True