mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 10:04:33 +02:00
60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
from queue import Queue
|
|
import frame_handler
|
|
from event_manager import EventManager
|
|
from state_manager import StateManager
|
|
from modem_frametypes import FRAME_TYPE as FR
|
|
from arq_session_irs import ARQSessionIRS
|
|
from arq_session_iss import ARQSessionISS
|
|
|
|
class ARQFrameHandler(frame_handler.FrameHandler):
|
|
|
|
def follow_protocol(self):
|
|
|
|
if not self.should_respond():
|
|
return
|
|
|
|
frame = self.details['frame']
|
|
session_id = frame['session_id']
|
|
snr = self.details["snr"]
|
|
frequency_offset = self.details["frequency_offset"]
|
|
|
|
if frame['frame_type_int'] == FR.ARQ_SESSION_OPEN.value:
|
|
|
|
# Lost OPEN_ACK case .. ISS will retry opening a session
|
|
if session_id in self.states.arq_irs_sessions:
|
|
session = self.states.arq_irs_sessions[session_id]
|
|
|
|
# Normal case when receiving a SESSION_OPEN for the first time
|
|
else:
|
|
if self.states.check_if_running_arq_session():
|
|
self.logger.warning("DISCARDING SESSION OPEN because of ongoing ARQ session ", frame=frame)
|
|
return
|
|
session = ARQSessionIRS(self.config,
|
|
self.modem,
|
|
frame['origin'],
|
|
session_id,
|
|
self.states)
|
|
self.states.register_arq_irs_session(session)
|
|
|
|
elif frame['frame_type_int'] in [
|
|
FR.ARQ_SESSION_INFO.value,
|
|
FR.ARQ_BURST_FRAME.value,
|
|
FR.ARQ_STOP.value,
|
|
]:
|
|
session = self.states.get_arq_irs_session(session_id)
|
|
|
|
elif frame['frame_type_int'] in [
|
|
FR.ARQ_SESSION_OPEN_ACK.value,
|
|
FR.ARQ_SESSION_INFO_ACK.value,
|
|
FR.ARQ_BURST_ACK.value,
|
|
FR.ARQ_STOP_ACK.value
|
|
]:
|
|
session = self.states.get_arq_iss_session(session_id)
|
|
|
|
else:
|
|
self.logger.warning("DISCARDING FRAME", frame=frame)
|
|
return
|
|
|
|
session.set_details(snr, frequency_offset)
|
|
session.on_frame_received(frame)
|