mirror of
https://github.com/markqvist/Reticulum.git
synced 2024-11-05 05:40:14 +00:00
376 lines
12 KiB
Python
376 lines
12 KiB
Python
from __future__ import annotations
|
|
import threading
|
|
import RNS
|
|
from RNS.Channel import MessageState, ChannelOutletBase, Channel, MessageBase
|
|
from RNS.vendor import umsgpack
|
|
from typing import Callable
|
|
import contextlib
|
|
import typing
|
|
import types
|
|
import time
|
|
import uuid
|
|
import unittest
|
|
|
|
|
|
class Packet:
|
|
timeout = 1.0
|
|
|
|
def __init__(self, raw: bytes):
|
|
self.state = MessageState.MSGSTATE_NEW
|
|
self.raw = raw
|
|
self.packet_id = uuid.uuid4()
|
|
self.tries = 0
|
|
self.timeout_id = None
|
|
self.lock = threading.RLock()
|
|
self.instances = 0
|
|
self.timeout_callback: Callable[[Packet], None] | None = None
|
|
self.delivered_callback: Callable[[Packet], None] | None = None
|
|
|
|
def set_timeout(self, callback: Callable[[Packet], None] | None, timeout: float):
|
|
with self.lock:
|
|
if timeout is not None:
|
|
self.timeout = timeout
|
|
self.timeout_callback = callback
|
|
|
|
|
|
def send(self):
|
|
self.tries += 1
|
|
self.state = MessageState.MSGSTATE_SENT
|
|
|
|
def elapsed(timeout: float, timeout_id: uuid.uuid4):
|
|
with self.lock:
|
|
self.instances += 1
|
|
try:
|
|
time.sleep(timeout)
|
|
with self.lock:
|
|
if self.timeout_id == timeout_id:
|
|
self.timeout_id = None
|
|
self.state = MessageState.MSGSTATE_FAILED
|
|
if self.timeout_callback:
|
|
self.timeout_callback(self)
|
|
finally:
|
|
with self.lock:
|
|
self.instances -= 1
|
|
|
|
self.timeout_id = uuid.uuid4()
|
|
threading.Thread(target=elapsed, name="Packet Timeout", args=[self.timeout, self.timeout_id],
|
|
daemon=True).start()
|
|
|
|
def clear_timeout(self):
|
|
self.timeout_id = None
|
|
|
|
def set_delivered_callback(self, callback: Callable[[Packet], None]):
|
|
self.delivered_callback = callback
|
|
|
|
def delivered(self):
|
|
with self.lock:
|
|
self.state = MessageState.MSGSTATE_DELIVERED
|
|
self.timeout_id = None
|
|
if self.delivered_callback:
|
|
self.delivered_callback(self)
|
|
|
|
|
|
class ChannelOutletTest(ChannelOutletBase):
|
|
def get_packet_state(self, packet: Packet) -> MessageState:
|
|
return packet.state
|
|
|
|
def set_packet_timeout_callback(self, packet: Packet, callback: Callable[[Packet], None] | None,
|
|
timeout: float | None = None):
|
|
packet.set_timeout(callback, timeout)
|
|
|
|
def set_packet_delivered_callback(self, packet: Packet, callback: Callable[[Packet], None] | None):
|
|
packet.set_delivered_callback(callback)
|
|
|
|
def get_packet_id(self, packet: Packet) -> any:
|
|
return packet.packet_id
|
|
|
|
def __init__(self, mdu: int, rtt: float):
|
|
self.link_id = uuid.uuid4()
|
|
self.timeout_callbacks = 0
|
|
self._mdu = mdu
|
|
self._rtt = rtt
|
|
self._usable = True
|
|
self.packets = []
|
|
self.packet_callback: Callable[[ChannelOutletBase, bytes], None] | None = None
|
|
|
|
def send(self, raw: bytes) -> Packet:
|
|
packet = Packet(raw)
|
|
packet.send()
|
|
self.packets.append(packet)
|
|
return packet
|
|
|
|
def resend(self, packet: Packet) -> Packet:
|
|
packet.send()
|
|
return packet
|
|
|
|
@property
|
|
def mdu(self):
|
|
return self._mdu
|
|
|
|
@property
|
|
def rtt(self):
|
|
return self._rtt
|
|
|
|
@property
|
|
def is_usable(self):
|
|
return self._usable
|
|
|
|
def timed_out(self):
|
|
self.timeout_callbacks += 1
|
|
|
|
def __str__(self):
|
|
return str(self.link_id)
|
|
|
|
|
|
class MessageTest(MessageBase):
|
|
MSGTYPE = 0xabcd
|
|
|
|
def __init__(self):
|
|
self.id = str(uuid.uuid4())
|
|
self.data = "test"
|
|
self.not_serialized = str(uuid.uuid4())
|
|
|
|
def pack(self) -> bytes:
|
|
return umsgpack.packb((self.id, self.data))
|
|
|
|
def unpack(self, raw):
|
|
self.id, self.data = umsgpack.unpackb(raw)
|
|
|
|
|
|
class SystemMessage(MessageBase):
|
|
MSGTYPE = 0xffff
|
|
|
|
def pack(self) -> bytes:
|
|
return bytes()
|
|
|
|
def unpack(self, raw):
|
|
pass
|
|
|
|
|
|
class ProtocolHarness(contextlib.AbstractContextManager):
|
|
def __init__(self, rtt: float):
|
|
self.outlet = ChannelOutletTest(mdu=500, rtt=rtt)
|
|
self.channel = Channel(self.outlet)
|
|
|
|
def cleanup(self):
|
|
self.channel._shutdown()
|
|
|
|
def __exit__(self, __exc_type: typing.Type[BaseException], __exc_value: BaseException,
|
|
__traceback: types.TracebackType) -> bool:
|
|
# self._log.debug(f"__exit__({__exc_type}, {__exc_value}, {__traceback})")
|
|
self.cleanup()
|
|
return False
|
|
|
|
|
|
class TestChannel(unittest.TestCase):
|
|
def setUp(self) -> None:
|
|
print("")
|
|
self.rtt = 0.001
|
|
self.retry_interval = self.rtt * 150
|
|
Packet.timeout = self.retry_interval
|
|
self.h = ProtocolHarness(self.rtt)
|
|
|
|
def tearDown(self) -> None:
|
|
self.h.cleanup()
|
|
|
|
def test_send_one_retry(self):
|
|
print("Channel test one retry")
|
|
message = MessageTest()
|
|
|
|
self.assertEqual(0, len(self.h.outlet.packets))
|
|
|
|
envelope = self.h.channel.send(message)
|
|
|
|
self.assertIsNotNone(envelope)
|
|
self.assertIsNotNone(envelope.raw)
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertIsNotNone(envelope.packet)
|
|
self.assertTrue(envelope in self.h.channel._tx_ring)
|
|
self.assertTrue(envelope.tracked)
|
|
|
|
packet = self.h.outlet.packets[0]
|
|
|
|
self.assertEqual(envelope.packet, packet)
|
|
self.assertEqual(1, envelope.tries)
|
|
self.assertEqual(1, packet.tries)
|
|
self.assertEqual(1, packet.instances)
|
|
self.assertEqual(MessageState.MSGSTATE_SENT, packet.state)
|
|
self.assertEqual(envelope.raw, packet.raw)
|
|
|
|
time.sleep(self.retry_interval * 1.5)
|
|
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertEqual(2, envelope.tries)
|
|
self.assertEqual(2, packet.tries)
|
|
self.assertEqual(1, packet.instances)
|
|
|
|
time.sleep(self.retry_interval)
|
|
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertEqual(self.h.outlet.packets[0], packet)
|
|
self.assertEqual(3, envelope.tries)
|
|
self.assertEqual(3, packet.tries)
|
|
self.assertEqual(1, packet.instances)
|
|
self.assertEqual(MessageState.MSGSTATE_SENT, packet.state)
|
|
|
|
packet.delivered()
|
|
|
|
self.assertEqual(MessageState.MSGSTATE_DELIVERED, packet.state)
|
|
|
|
time.sleep(self.retry_interval)
|
|
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertEqual(3, envelope.tries)
|
|
self.assertEqual(3, packet.tries)
|
|
self.assertEqual(0, packet.instances)
|
|
self.assertFalse(envelope.tracked)
|
|
|
|
def test_send_timeout(self):
|
|
print("Channel test retry count exceeded")
|
|
message = MessageTest()
|
|
|
|
self.assertEqual(0, len(self.h.outlet.packets))
|
|
|
|
envelope = self.h.channel.send(message)
|
|
|
|
self.assertIsNotNone(envelope)
|
|
self.assertIsNotNone(envelope.raw)
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertIsNotNone(envelope.packet)
|
|
self.assertTrue(envelope in self.h.channel._tx_ring)
|
|
self.assertTrue(envelope.tracked)
|
|
|
|
packet = self.h.outlet.packets[0]
|
|
|
|
self.assertEqual(envelope.packet, packet)
|
|
self.assertEqual(1, envelope.tries)
|
|
self.assertEqual(1, packet.tries)
|
|
self.assertEqual(1, packet.instances)
|
|
self.assertEqual(MessageState.MSGSTATE_SENT, packet.state)
|
|
self.assertEqual(envelope.raw, packet.raw)
|
|
|
|
time.sleep(self.retry_interval * 7.5)
|
|
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertEqual(5, envelope.tries)
|
|
self.assertEqual(5, packet.tries)
|
|
self.assertEqual(0, packet.instances)
|
|
self.assertEqual(MessageState.MSGSTATE_FAILED, packet.state)
|
|
self.assertFalse(envelope.tracked)
|
|
|
|
def test_multiple_handler(self):
|
|
print("Channel test multiple handler short circuit")
|
|
|
|
handler1_called = 0
|
|
handler1_return = True
|
|
handler2_called = 0
|
|
|
|
def handler1(msg: MessageBase):
|
|
nonlocal handler1_called, handler1_return
|
|
self.assertIsInstance(msg, MessageTest)
|
|
handler1_called += 1
|
|
return handler1_return
|
|
|
|
def handler2(msg: MessageBase):
|
|
nonlocal handler2_called
|
|
self.assertIsInstance(msg, MessageTest)
|
|
handler2_called += 1
|
|
|
|
message = MessageTest()
|
|
self.h.channel.register_message_type(MessageTest)
|
|
self.h.channel.add_message_handler(handler1)
|
|
self.h.channel.add_message_handler(handler2)
|
|
envelope = RNS.Channel.Envelope(self.h.outlet, message, sequence=0)
|
|
raw = envelope.pack()
|
|
self.h.channel._receive(raw)
|
|
|
|
self.assertEqual(1, handler1_called)
|
|
self.assertEqual(0, handler2_called)
|
|
|
|
handler1_return = False
|
|
envelope = RNS.Channel.Envelope(self.h.outlet, message, sequence=1)
|
|
raw = envelope.pack()
|
|
self.h.channel._receive(raw)
|
|
|
|
self.assertEqual(2, handler1_called)
|
|
self.assertEqual(1, handler2_called)
|
|
|
|
def test_system_message_check(self):
|
|
print("Channel test register system message")
|
|
with self.assertRaises(RNS.Channel.ChannelException):
|
|
self.h.channel.register_message_type(SystemMessage)
|
|
self.h.channel.register_message_type(SystemMessage, is_system_type=True)
|
|
|
|
|
|
def eat_own_dog_food(self, message: MessageBase, checker: typing.Callable[[MessageBase], None]):
|
|
decoded: [MessageBase] = []
|
|
|
|
def handle_message(message: MessageBase):
|
|
decoded.append(message)
|
|
|
|
self.h.channel.register_message_type(message.__class__)
|
|
self.h.channel.add_message_handler(handle_message)
|
|
self.assertEqual(len(self.h.outlet.packets), 0)
|
|
|
|
envelope = self.h.channel.send(message)
|
|
time.sleep(self.retry_interval * 0.5)
|
|
|
|
self.assertIsNotNone(envelope)
|
|
self.assertIsNotNone(envelope.raw)
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertIsNotNone(envelope.packet)
|
|
self.assertTrue(envelope in self.h.channel._tx_ring)
|
|
self.assertTrue(envelope.tracked)
|
|
|
|
packet = self.h.outlet.packets[0]
|
|
|
|
self.assertEqual(envelope.packet, packet)
|
|
self.assertEqual(1, envelope.tries)
|
|
self.assertEqual(1, packet.tries)
|
|
self.assertEqual(1, packet.instances)
|
|
self.assertEqual(MessageState.MSGSTATE_SENT, packet.state)
|
|
self.assertEqual(envelope.raw, packet.raw)
|
|
|
|
packet.delivered()
|
|
|
|
self.assertEqual(MessageState.MSGSTATE_DELIVERED, packet.state)
|
|
|
|
time.sleep(self.retry_interval * 2)
|
|
|
|
self.assertEqual(1, len(self.h.outlet.packets))
|
|
self.assertEqual(1, envelope.tries)
|
|
self.assertEqual(1, packet.tries)
|
|
self.assertEqual(0, packet.instances)
|
|
self.assertFalse(envelope.tracked)
|
|
|
|
self.assertEqual(len(self.h.outlet.packets), 1)
|
|
self.assertEqual(MessageState.MSGSTATE_DELIVERED, packet.state)
|
|
self.assertFalse(envelope.tracked)
|
|
self.assertEqual(0, len(decoded))
|
|
|
|
self.h.channel._receive(packet.raw)
|
|
|
|
self.assertEqual(1, len(decoded))
|
|
|
|
rx_message = decoded[0]
|
|
|
|
self.assertIsNotNone(rx_message)
|
|
self.assertIsInstance(rx_message, message.__class__)
|
|
checker(rx_message)
|
|
|
|
def test_send_receive_message_test(self):
|
|
print("Channel test send and receive message")
|
|
message = MessageTest()
|
|
|
|
def check(rx_message: MessageBase):
|
|
self.assertIsInstance(rx_message, message.__class__)
|
|
self.assertEqual(message.id, rx_message.id)
|
|
self.assertEqual(message.data, rx_message.data)
|
|
self.assertNotEqual(message.not_serialized, rx_message.not_serialized)
|
|
|
|
self.eat_own_dog_food(message, check)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(verbosity=2)
|