def get_as_info(self, isd_as=None):
q_ia = isd_as
if not q_ia:
q_ia = "local"
with self._as_infos_lock:
_, as_infos = self._try_cache(self._as_infos, [q_ia])
as_info = as_infos.get(q_ia)
if as_info:
return as_info
req_id = self._req_id.inc()
as_req = SCIONDASInfoRequest.from_values(req_id, isd_as)
with closing(self._create_socket()) as socket:
if not socket.send(as_req.pack_full()):
raise SCIONDRequestError
response = self._get_response(socket, req_id, SMT.AS_REPLY)
self._as_infos[q_ia] = list(response.iter_entries())
return self._as_infos[q_ia]
def _test_as_request_reply(self):
as_req = SCIONDASInfoRequest.from_values()
api_socket = self.api_socket()
api_socket.send(as_req.pack_full())
data = api_socket.recv()[0]
if data:
response = parse_sciond_msg(data)
if response.MSG_TYPE != SMT.AS_REPLY:
logging.error("Unexpected SCIOND msg type received: %s" %
response.NAME)
return False
for entry in response.iter_entries():
if entry.isd_as() == self.addr.isd_as:
logging.debug("Received correct AS reply.")
return True
logging.error("Wrong AS Reply received.")
return False