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Cleanup

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This commit is contained in:
Mark Qvist 2023-05-11 17:48:07 +02:00
parent 1542c5f4fe
commit 66fda34b20
1 changed files with 15 additions and 38 deletions
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53
RNS/Channel.py
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@ -253,7 +253,8 @@ class Channel(contextlib.AbstractContextManager):
# will never be smaller than this value. # will never be smaller than this value.
WINDOW_FLEXIBILITY = 4 WINDOW_FLEXIBILITY = 4
SEQ_MODULUS = 0x10000 SEQ_MAX = 0xFFFF
SEQ_MODULUS = SEQ_MAX+1
def __init__(self, outlet: ChannelOutletBase): def __init__(self, outlet: ChannelOutletBase):
""" """
@ -378,8 +379,8 @@ class Channel(contextlib.AbstractContextManager):
try: try:
if cb(message): if cb(message):
return return
except Exception as ex: except Exception as e:
RNS.log(f"Channel "+str(self)+" experienced an error while running message callback: {ex}", RNS.LOG_ERROR) RNS.log("Channel "+str(self)+" experienced an error while running a message callback. The contained exception was: "+str(e), RNS.LOG_ERROR)
def _receive(self, raw: bytes): def _receive(self, raw: bytes):
try: try:
@ -387,7 +388,6 @@ class Channel(contextlib.AbstractContextManager):
with self._lock: with self._lock:
message = envelope.unpack(self._message_factories) message = envelope.unpack(self._message_factories)
# TODO: Test sequence overflow
if envelope.sequence < self._next_rx_sequence: if envelope.sequence < self._next_rx_sequence:
window_overflow = (self._next_rx_sequence+Channel.WINDOW_MAX) % Channel.SEQ_MODULUS window_overflow = (self._next_rx_sequence+Channel.WINDOW_MAX) % Channel.SEQ_MODULUS
if window_overflow < self._next_rx_sequence: if window_overflow < self._next_rx_sequence:
@ -411,24 +411,14 @@ class Channel(contextlib.AbstractContextManager):
if e.sequence == self._next_rx_sequence: if e.sequence == self._next_rx_sequence:
contigous.append(e) contigous.append(e)
self._next_rx_sequence = (self._next_rx_sequence + 1) % Channel.SEQ_MODULUS self._next_rx_sequence = (self._next_rx_sequence + 1) % Channel.SEQ_MODULUS
# TODO: Remove
if self._next_rx_sequence > Channel.SEQ_MODULUS - 100:
RNS.log("RX SEQ "+str(self._next_rx_sequence))
print("RX SEQ "+str(self._next_rx_sequence))
if self._next_rx_sequence == 0:
RNS.log("RX SEQ OVERFLOW")
RNS.log("RX SEQ OVERFLOW")
print("RX SEQ OVERFLOW")
print("RX SEQ OVERFLOW")
for e in contigous: for e in contigous:
m = e.unpack(self._message_factories) m = e.unpack(self._message_factories)
self._rx_ring.remove(e) self._rx_ring.remove(e)
threading.Thread(target=self._run_callbacks, name="Message Callback", args=[m], daemon=True).start() threading.Thread(target=self._run_callbacks, name="Message Callback", args=[m], daemon=True).start()
except Exception as ex: except Exception as e:
RNS.log(f"Channel: Error receiving data: {ex}") RNS.log("An error ocurred while receiving data on "+str(self)+". The contained exception was: "+str(e), RNS.LOG_ERROR)
def is_ready_to_send(self) -> bool: def is_ready_to_send(self) -> bool:
""" """
@ -437,7 +427,6 @@ class Channel(contextlib.AbstractContextManager):
:return: True if ready :return: True if ready
""" """
if not self._outlet.is_usable: if not self._outlet.is_usable:
RNS.log("Channel: Link is not usable.", RNS.LOG_EXTREME)
return False return False
with self._lock: with self._lock:
@ -466,12 +455,10 @@ class Channel(contextlib.AbstractContextManager):
if (self.window - self.window_min) > (self.window_flexibility-1): if (self.window - self.window_min) > (self.window_flexibility-1):
self.window_min += 1 self.window_min += 1
# TODO: Remove # TODO: Remove at some point
RNS.log("Increased channel window to "+str(self.window), RNS.LOG_DEBUG) RNS.log("Increased "+str(self)+" window to "+str(self.window), RNS.LOG_DEBUG)
if self._outlet.rtt != 0: if self._outlet.rtt != 0:
# TODO: Remove
# RNS.log("Link RTT is "+str(self._outlet.rtt), RNS.LOG_DEBUG)
if self._outlet.rtt > Channel.RTT_FAST: if self._outlet.rtt > Channel.RTT_FAST:
self.fast_rate_rounds = 0 self.fast_rate_rounds = 0
@ -481,13 +468,13 @@ class Channel(contextlib.AbstractContextManager):
if self.window_max < Channel.WINDOW_MAX_FAST and self.fast_rate_rounds == Channel.FAST_RATE_THRESHOLD: if self.window_max < Channel.WINDOW_MAX_FAST and self.fast_rate_rounds == Channel.FAST_RATE_THRESHOLD:
self.window_max = Channel.WINDOW_MAX_FAST self.window_max = Channel.WINDOW_MAX_FAST
# TODO: Remove # TODO: Remove at some point
RNS.log("Increased max channel window to "+str(self.window_max), RNS.LOG_DEBUG) RNS.log("Increased "+str(self)+" max window to "+str(self.window_max), RNS.LOG_EXTREME)
else: else:
RNS.log("Channel: Envelope not found in TX ring", RNS.LOG_DEBUG) RNS.log("Envelope not found in TX ring for "+str(self), RNS.LOG_DEBUG)
if not envelope: if not envelope:
RNS.log("Channel: Spurious message received.", RNS.LOG_EXTREME) RNS.log("Spurious message received on "+str(self), RNS.LOG_EXTREME)
def _packet_delivered(self, packet: TPacket): def _packet_delivered(self, packet: TPacket):
self._packet_tx_op(packet, lambda env: True) self._packet_tx_op(packet, lambda env: True)
@ -498,7 +485,7 @@ class Channel(contextlib.AbstractContextManager):
def _packet_timeout(self, packet: TPacket): def _packet_timeout(self, packet: TPacket):
def retry_envelope(envelope: Envelope) -> bool: def retry_envelope(envelope: Envelope) -> bool:
if envelope.tries >= self._max_tries: if envelope.tries >= self._max_tries:
RNS.log("Channel: Retry count exceeded, tearing down Link.", RNS.LOG_ERROR) RNS.log("Retry count exceeded on "+str(self)+", tearing down Link.", RNS.LOG_ERROR)
self._shutdown() # start on separate thread? self._shutdown() # start on separate thread?
self._outlet.timed_out() self._outlet.timed_out()
return True return True
@ -514,8 +501,8 @@ class Channel(contextlib.AbstractContextManager):
if (self.window_max - self.window) > (self.window_flexibility-1): if (self.window_max - self.window) > (self.window_flexibility-1):
self.window_max -= 1 self.window_max -= 1
# TODO: Remove # TODO: Remove at some point
RNS.log("Decreased channel window to "+str(self.window), RNS.LOG_DEBUG) RNS.log("Decreased "+str(self)+" window to "+str(self.window), RNS.LOG_EXTREME)
return False return False
@ -535,16 +522,6 @@ class Channel(contextlib.AbstractContextManager):
raise ChannelException(CEType.ME_LINK_NOT_READY, f"Link is not ready") raise ChannelException(CEType.ME_LINK_NOT_READY, f"Link is not ready")
envelope = Envelope(self._outlet, message=message, sequence=self._next_sequence) envelope = Envelope(self._outlet, message=message, sequence=self._next_sequence)
self._next_sequence = (self._next_sequence + 1) % Channel.SEQ_MODULUS self._next_sequence = (self._next_sequence + 1) % Channel.SEQ_MODULUS
# TODO: Remove
if self._next_sequence > Channel.SEQ_MODULUS - 100:
RNS.log("RX SEQ "+str(self._next_rx_sequence))
print("RX SEQ "+str(self._next_rx_sequence))
if self._next_sequence == 0:
RNS.log("TX SEQ OVERFLOW")
RNS.log("TX SEQ OVERFLOW")
print("TX SEQ OVERFLOW")
print("TX SEQ OVERFLOW")
self._emplace_envelope(envelope, self._tx_ring) self._emplace_envelope(envelope, self._tx_ring)
if envelope is None: if envelope is None: