def config_option_ertm(mtu=642,
fcs=None,
max_transmit=10,
mps=1010,
tx_window_size=10,
monitor_time_out=2000,
retransmission_time_out=1000):
result = []
mtu_opt = l2cap_packets.MtuConfigurationOption()
mtu_opt.mtu = mtu
result.append(mtu_opt)
if fcs is not None:
fcs_opt = l2cap_packets.FrameCheckSequenceOption()
fcs_opt.fcs_type = fcs
result.append(fcs_opt)
rfc_opt = l2cap_packets.RetransmissionAndFlowControlConfigurationOption(
)
rfc_opt.mode = l2cap_packets.RetransmissionAndFlowControlModeOption.ENHANCED_RETRANSMISSION
rfc_opt.tx_window_size = tx_window_size
rfc_opt.max_transmit = max_transmit
rfc_opt.retransmission_time_out = retransmission_time_out
rfc_opt.monitor_time_out = monitor_time_out
rfc_opt.maximum_pdu_size = mps
result.append(rfc_opt)
return result
def config_option_basic_explicit(mtu=642):
mtu_opt = l2cap_packets.MtuConfigurationOption()
mtu_opt.mtu = mtu
rfc_opt = l2cap_packets.RetransmissionAndFlowControlConfigurationOption(
)
rfc_opt.mode = l2cap_packets.RetransmissionAndFlowControlModeOption.L2CAP_BASIC
return [mtu_opt, rfc_opt]
def test_l2cap_config_options(self):
mtu_opt = l2cap_packets.MtuConfigurationOption()
mtu_opt.mtu = 123
fcs_opt = l2cap_packets.FrameCheckSequenceOption()
fcs_opt.fcs_type = l2cap_packets.FcsType.DEFAULT
request = l2cap_packets.ConfigurationRequestBuilder(
0x1d, # Command ID
0xc1d, # Channel ID
l2cap_packets.Continuation.END,
[mtu_opt, fcs_opt])
request_b_frame = l2cap_packets.BasicFrameBuilder(0x01, request)
handle = 123
wrapped = hci_packets.AclPacketBuilder(
handle,
hci_packets.PacketBoundaryFlag.FIRST_NON_AUTOMATICALLY_FLUSHABLE,
hci_packets.BroadcastFlag.POINT_TO_POINT, request_b_frame)
# Size is ACL (4) + L2CAP (4) + Configure (8) + MTU (4) + FCS (3)
asserts.assert_true(
len(wrapped.Serialize()) == 23, "Packet serialized incorrectly")
def config_option_mtu_explicit(mtu=642):
mtu_opt = l2cap_packets.MtuConfigurationOption()
mtu_opt.mtu = mtu
return [mtu_opt]