def get_session_info(self, request: foundation.Request) -> (str, str):
if hasattr(request, '_session_id'):
id = request._session_id
hash = request._session_hash
else:
cn = self.cookie_name
if cn in request.cookies and \
request.cookies[cn][8:] == self.make_hash(
request.cookies[cn][:8]):
id = request.cookies[self.cookie_name][:8]
hash = request.cookies[self.cookie_name][8:]
else:
id = self.generate_id()
hash = self.make_hash(id)
request._session_id = id
request._session_hash = hash
return id, hash
