FreeDATA/modem/frame_handler_p2p_connection.py

54 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 p2p_connection import P2PConnection
class P2PConnectionFrameHandler(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.P2P_CONNECTION_CONNECT.value:
# Lost OPEN_ACK case .. ISS will retry opening a session
if session_id in self.states.arq_irs_sessions:
session = self.states.p2p_connection_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
print(frame)
session = P2PConnection(self.config,
self.modem,
frame['origin'],
frame['destination_crc'],
self.states, self.event_manager)
session.session_id = session_id
self.states.register_p2p_connection_session(session)
elif frame['frame_type_int'] in [
FR.P2P_CONNECTION_CONNECT_ACK.value,
FR.P2P_CONNECTION_DISCONNECT.value,
FR.P2P_CONNECTION_DISCONNECT_ACK.value,
FR.P2P_CONNECTION_PAYLOAD.value,
FR.P2P_CONNECTION_PAYLOAD_ACK.value,
]:
session = self.states.get_p2p_connection_session(session_id)
else:
self.logger.warning("DISCARDING FRAME", frame=frame)
return
session.set_details(snr, frequency_offset)
session.on_frame_received(frame)