def ack_timeout(self, *args):
print("ACK timeout")
assert len(args) == 2
assert isinstance(args[0], schcmsg.frag_sender_tx)
assert isinstance(args[1], int)
schc_frag = args[0]
win = args[1]
self.ack_requests_counter += 1
if self.ack_requests_counter > max_ack_requests:
# sending sender abort.
schc_frag = schcmsg.frag_sender_tx_abort(self.rule, self.dtag, win)
args = (schc_frag.packet.get_content(),
self.protocol.layer2.mac_id, None, None, False)
print("Sent Sender-Abort.", schc_frag.__dict__)
self.protocol.scheduler.add_event(0,
self.protocol.layer2.send_packet,
args)
return
# set ack waiting timer
self.event_id_ack_wait_timer = self.protocol.scheduler.add_event(
self.ack_wait_timer, self.ack_timeout, args)
# retransmit MIC.
args = (schc_frag.packet.get_content(), self.protocol.layer2.mac_id,
None, self.event_sent_frag, True)
print("Retransmitted frag:", schc_frag.__dict__)
self.protocol.scheduler.add_event(0, self.protocol.layer2.send_packet,
args)
def ack_timeout(self, *args):
self.cancel_ack_wait_timer()
print("----------------------- ACK timeout ----------------------- ")
self.state = self.ACK_TIMEOUT
assert len(args) == 2
assert isinstance(args[0], schcmsg.frag_sender_tx)
assert isinstance(args[1], int)
schc_frag = args[0]
win = args[1]
self.ack_requests_counter += 1
print("ack_requests_counter -> {}".format(self.ack_requests_counter))
if self.ack_requests_counter > max_ack_requests:
# sending sender abort.
schc_frag = schcmsg.frag_sender_tx_abort(self.rule, self.dtag, win)
""" Changement à corriger
args = (schc_frag.packet.get_content(), self.context["devL2Addr"])
"""
args = (schc_frag.packet.get_content(), "*")
print("MESSSAGE TYPE ----> Sent Sender-Abort.", schc_frag.__dict__)
if enable_statsct:
Statsct.set_msg_type("SCHC_SENDER_ABORT")
Statsct.set_header_size(
schcmsg.get_sender_header_size(self.rule))
self.protocol.scheduler.add_event(0,
self.protocol.layer2.send_packet,
args)
return
# set ack waiting timer
self.event_id_ack_wait_timer = self.protocol.scheduler.add_event(
self.ack_wait_timer, self.ack_timeout, args)
print("*******event id {}".format(self.event_id_ack_wait_timer))
schc_frag = schcmsg.frag_sender_ack_req(self.rule, self.dtag, win)
if enable_statsct:
Statsct.set_msg_type("SCHC_ACK_REQ")
# # retransmit MIC.
"""Changement à corriger
args = (schc_frag.packet.get_content(), self.context["devL2Addr"],
self.event_sent_frag)
"""
args = (schc_frag.packet.get_content(), '*', self.event_sent_frag)
print("MESSSAGE TYPE ----> SCHC ACK REQ frag:", schc_frag.__dict__)
self.protocol.scheduler.add_event(0, self.protocol.layer2.send_packet,
args)
""" waits for all the acks before sending the ack request