FreeDATA/tests/test_message_protocol.py

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import sys
import time
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sys.path.append('freedata-server')
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import unittest
import unittest.mock
from config import CONFIG
import helpers
import queue
import threading
import base64
from command_arq_raw import ARQRawCommand
from state_manager import StateManager
from frame_dispatcher import DISPATCHER
import random
import structlog
import numpy as np
from event_manager import EventManager
from state_manager import StateManager
from data_frame_factory import DataFrameFactory
import codec2
import arq_session_irs
from server import enqueue_tx_command
import command_message_send
class TestModem:
def __init__(self, event_q, state_q):
self.data_queue_received = queue.Queue()
self.demodulator = unittest.mock.Mock()
self.event_manager = EventManager([event_q])
self.logger = structlog.get_logger('Modem')
self.states = StateManager(state_q)
def getFrameTransmissionTime(self, mode):
samples = 0
c2instance = codec2.open_instance(mode.value)
samples += codec2.api.freedv_get_n_tx_preamble_modem_samples(c2instance)
samples += codec2.api.freedv_get_n_tx_modem_samples(c2instance)
samples += codec2.api.freedv_get_n_tx_postamble_modem_samples(c2instance)
time = samples / 8000
return time
def transmit(self, mode, repeats: int, repeat_delay: int, frames: bytearray) -> bool:
# Simulate transmission time
tx_time = self.getFrameTransmissionTime(mode) + 0.1 # PTT
self.logger.info(f"TX {tx_time} seconds...")
threading.Event().wait(tx_time)
transmission = {
'mode': mode,
'bytes': frames,
}
self.data_queue_received.put(transmission)
class TestMessageProtocol(unittest.TestCase):
@classmethod
def setUpClass(cls):
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config_manager = CONFIG('freedata-server/config.ini.example')
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cls.config = config_manager.read()
cls.logger = structlog.get_logger("TESTS")
cls.frame_factory = DataFrameFactory(cls.config)
# ISS
cls.iss_state_manager = StateManager(queue.Queue())
cls.iss_event_manager = EventManager([queue.Queue()])
cls.iss_event_queue = queue.Queue()
cls.iss_state_queue = queue.Queue()
cls.iss_modem = TestModem(cls.iss_event_queue, cls.iss_state_queue)
cls.iss_frame_dispatcher = DISPATCHER(cls.config,
cls.iss_event_manager,
cls.iss_state_manager,
cls.iss_modem)
# IRS
cls.irs_state_manager = StateManager(queue.Queue())
cls.irs_event_manager = EventManager([queue.Queue()])
cls.irs_event_queue = queue.Queue()
cls.irs_state_queue = queue.Queue()
cls.irs_modem = TestModem(cls.irs_event_queue, cls.irs_state_queue)
cls.irs_frame_dispatcher = DISPATCHER(cls.config,
cls.irs_event_manager,
cls.irs_state_manager,
cls.irs_modem)
# Frame loss probability in %
cls.loss_probability = 30
cls.channels_running = True
def channelWorker(self, modem_transmit_queue: queue.Queue, frame_dispatcher: DISPATCHER):
while self.channels_running:
# Transfer data between both parties
try:
transmission = modem_transmit_queue.get(timeout=1)
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transmission["bytes"] += bytes(2) # simulate 2 bytes crc checksum
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if random.randint(0, 100) < self.loss_probability:
self.logger.info(f"[{threading.current_thread().name}] Frame lost...")
continue
frame_bytes = transmission['bytes']
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if len(frame_bytes) == 5:
mode_name = "SIGNALLING_ACK"
else:
mode_name = None
frame_dispatcher.process_data(frame_bytes, None, len(frame_bytes), 0, 0, mode_name=mode_name)
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except queue.Empty:
continue
self.logger.info(f"[{threading.current_thread().name}] Channel closed.")
def waitForSession(self, q, outbound=False):
key = 'arq-transfer-outbound' if outbound else 'arq-transfer-inbound'
while True and self.channels_running:
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ev = q.get()
if key in ev and ('success' in ev[key] or 'ABORTED' in ev[key]):
self.logger.info(f"[{threading.current_thread().name}] {key} session ended.")
break
def establishChannels(self):
self.channels_running = True
self.iss_to_irs_channel = threading.Thread(target=self.channelWorker,
args=[self.iss_modem.data_queue_received,
self.irs_frame_dispatcher],
name="ISS to IRS channel")
self.iss_to_irs_channel.start()
self.irs_to_iss_channel = threading.Thread(target=self.channelWorker,
args=[self.irs_modem.data_queue_received,
self.iss_frame_dispatcher],
name="IRS to ISS channel")
self.irs_to_iss_channel.start()
def waitAndCloseChannels(self):
self.waitForSession(self.iss_event_queue, True)
self.channels_running = False
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self.waitForSession(self.irs_event_queue, False)
self.channels_running = False
def testMessageViaSession(self):
# set Packet Error Rate (PER) / frame loss probability
self.loss_probability = 0
self.establishChannels()
params = {
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'destination': "AA1AAA-1",
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'body': 'Hello World',
}
cmd_class = command_message_send.SendMessageCommand
command = cmd_class(self.config, self.iss_state_manager, self.iss_event_manager, params)
command.run(self.iss_event_manager, self.iss_modem)
self.waitAndCloseChannels()