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https://github.com/DJ2LS/FreeDATA
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Change timeouts and retries in ARQ sessions.
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@ -74,6 +74,7 @@ class ARQSession():
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def on_frame_received(self, frame):
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self.event_frame_received.set()
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self.log(f"Received {frame['frame_type']}")
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frame_type = frame['frame_type_int']
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if self.state in self.STATE_TRANSITION:
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if frame_type in self.STATE_TRANSITION[self.state]:
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@ -17,8 +17,8 @@ class ARQSessionIRS(arq_session.ARQSession):
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RETRIES_CONNECT = 3
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RETRIES_TRANSFER = 3 # we need to increase this
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TIMEOUT_CONNECT = 6
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TIMEOUT_DATA = 6
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TIMEOUT_CONNECT = 3
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TIMEOUT_DATA = 12
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STATE_TRANSITION = {
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STATE_NEW: {
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@ -60,11 +60,9 @@ class ARQSessionIRS(arq_session.ARQSession):
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def all_data_received(self):
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return self.total_length == self.received_bytes
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def final_crc_check(self):
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print(self.received_data)
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print(self.total_crc)
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print(helpers.get_crc_32(bytes(self.received_data)).hex())
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return self.total_crc == helpers.get_crc_32(bytes(self.received_data)).hex()
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def final_crc_matches(self) -> bool:
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match = self.total_crc == helpers.get_crc_32(bytes(self.received_data)).hex()
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return match
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def transmit_and_wait(self, frame, timeout, mode):
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self.transmit_frame(frame, mode)
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@ -101,6 +99,8 @@ class ARQSessionIRS(arq_session.ARQSession):
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self.total_crc = info_frame['total_crc']
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self.dx_snr.append(info_frame['snr'])
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self.log(f"New transfer of {self.total_length} bytes")
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self.calibrate_speed_settings()
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self.set_decode_mode()
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info_ack = self.frame_factory.build_arq_session_info_ack(
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@ -117,7 +117,7 @@ class ARQSessionIRS(arq_session.ARQSession):
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def process_incoming_data(self, frame):
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if frame['offset'] != self.received_bytes:
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self.logger.info(f"Discarding data frame due to wrong offset", frame=frame)
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self.log(f"Discarding data offset {frame['offset']}")
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return False
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remaining_data_length = self.total_length - self.received_bytes
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@ -132,6 +132,7 @@ class ARQSessionIRS(arq_session.ARQSession):
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self.received_data[frame['offset']:] = data_part
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self.received_bytes += len(data_part)
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self.log(f"Received {self.received_bytes}/{self.total_length} bytes")
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return True
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@ -149,7 +150,7 @@ class ARQSessionIRS(arq_session.ARQSession):
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self.set_state(self.STATE_BURST_REPLY_SENT)
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return
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if self.final_crc_check():
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if self.final_crc_matches():
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self.log("All data received successfully!")
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self.transmit_frame(ack, mode=FREEDV_MODE.signalling)
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self.set_state(self.STATE_ENDED)
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@ -16,9 +16,9 @@ class ARQSessionISS(arq_session.ARQSession):
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STATE_ENDED = 4
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STATE_FAILED = 5
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RETRIES_CONNECT = 3
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TIMEOUT_CONNECT_ACK = 7
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TIMEOUT_TRANSFER = 10
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RETRIES_CONNECT = 10
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TIMEOUT_CONNECT_ACK = 3
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TIMEOUT_TRANSFER = 3
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STATE_TRANSITION = {
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STATE_OPEN_SENT: {
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@ -93,13 +93,13 @@ class ARQSessionISS(arq_session.ARQSession):
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if 'offset' in irs_frame:
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self.confirmed_bytes = irs_frame['offset']
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self.log(f"IRS confirmed {self.confirmed_bytes}/{len(self.data)} bytes")
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if self.confirmed_bytes == len(self.data):
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self.set_state(self.STATE_ENDED)
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self.log("All data transfered!")
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return
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payload_size = self.get_data_payload_size()
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print(f"payload size: {payload_size}")
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burst = []
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for f in range(0, self.frames_per_burst):
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offset = self.confirmed_bytes
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@ -159,7 +159,6 @@ class DataFrameFactory:
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frame_length = frame_template["frame_length"]
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else:
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frame_length -= 2
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print(frame_length)
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frame = bytearray(frame_length)
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frame[:1] = bytes([frametype.value])
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@ -232,7 +231,6 @@ class DataFrameFactory:
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whole_frame_length = self.get_bytes_per_frame(mode)
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available = whole_frame_length - 2 # 2Bytes CRC16
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available -= 1 # Frame Type
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print(self.template_list[type.value].items())
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for field, length in self.template_list[type.value].items():
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if field != 'frame_length' and isinstance(length, int):
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available -= length
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@ -9,7 +9,6 @@ class EventManager:
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self.lastpttstate = False
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def broadcast(self, data):
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self.log.debug(f"Broadcasting event: {data}")
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for q in self.queues:
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q.put(data)
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@ -101,8 +101,8 @@ class FrameHandler():
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pass
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def log(self):
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self.logger.info(f"[Frame Handler] Handling frame {self.details['frame']}")
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pass
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return
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self.logger.info(f"[Frame Handler] Handling frame {self.details['frame']['frame_type']}")
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def handle(self, frame, snr, frequency_offset, freedv_inst, bytes_per_frame):
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self.details['frame'] = frame
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@ -54,15 +54,16 @@ class TestARQSession(unittest.TestCase):
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cls.loss_probability = 50
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def channelWorker(self, modem_transmit_queue: queue, frame_dispatcher: DISPATCHER):
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while True:
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frame_bytes = modem_transmit_queue.get()
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if random.randint(0, 100) < self.loss_probability:
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self.logger.info(f"[{threading.current_thread().name}] Frame lost...")
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continue
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self.logger.info(f"[{threading.current_thread().name}] Redirecting frame")
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frame_dispatcher.new_process_data(frame_bytes, None, len(frame_bytes), 0, 0)
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def establishChannels(self):
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self.iss_to_irs_channel = threading.Thread(target=self.channelWorker,
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args=[self.iss_modem.data_queue_received,
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@ -76,7 +77,7 @@ class TestARQSession(unittest.TestCase):
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name = "IRS to ISS channel")
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self.irs_to_iss_channel.start()
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def testARQSessionSmallPayload(self):
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def xtestARQSessionSmallPayload(self):
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# set Packet Error Rate (PER) / frame loss probability
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self.loss_probability = 30
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