def _on_configuration_request_default(self, l2cap_control_view):
request = l2cap_packets.ConfigurationRequestView(l2cap_control_view)
dcid = request.GetDestinationCid()
if dcid not in self.scid_to_channel:
logging.warning("Received config request with unknown dcid")
return
self._control_behaviors.on_config_req_behavior.run(request)
def _is_matching_configuration_request_with_cid(packet, cid=None):
frame = L2capMatchers.control_frame_with_code(packet, CommandCode.CONFIGURATION_REQUEST)
if frame is None:
return False
request = l2cap_packets.ConfigurationRequestView(frame)
dcid = request.GetDestinationCid()
return cid is None or cid == dcid
def _is_matching_configuration_request_with_ertm(packet):
frame = L2capMatchers.control_frame_with_code(packet, CommandCode.CONFIGURATION_REQUEST)
if frame is None:
return False
request = l2cap_packets.ConfigurationRequestView(frame)
config_bytes = request.GetBytes()
# TODO(b/153189503): Use packet struct parser.
return b"\x04\x09\x03" in config_bytes
def _extract_configuration_request(packet):
frame = L2capMatchers.control_frame_with_code(
packet, CommandCode.CONFIGURATION_REQUEST)
return l2cap_packets.ConfigurationRequestView(frame)