+ bootstrap_node = doc.find(_add_ns('bootstrapInfo'))
+ if bootstrap_node.text is None:
+ bootstrap_url = compat_urlparse.urljoin(
+ base_url, bootstrap_node.attrib['url'])
+ bootstrap = self.ydl.urlopen(bootstrap_url).read()
+ else:
+ bootstrap = base64.b64decode(bootstrap_node.text)