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Tuned channel windowing

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This commit is contained in:
Mark Qvist 2023-05-10 20:01:33 +02:00
parent e10ddf9d2d
commit 73faf04ea1
1 changed files with 44 additions and 25 deletions
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69
RNS/Channel.py
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@ -242,7 +242,7 @@ class Channel(contextlib.AbstractContextManager):
# If the fast rate is sustained for this many request
# rounds, the fast link window size will be allowed.
FAST_RATE_THRESHOLD = 5
FAST_RATE_THRESHOLD = 10
# If the RTT rate is higher than this value,
# the max window size for fast links will be used.
@ -412,37 +412,21 @@ class Channel(contextlib.AbstractContextManager):
contigous.append(e)
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("SEQ OVERFLOW")
RNS.log("RX SEQ OVERFLOW")
RNS.log("RX SEQ OVERFLOW")
print("RX SEQ OVERFLOW")
print("RX SEQ OVERFLOW")
for e in contigous:
m = e.unpack(self._message_factories)
self._rx_ring.remove(e)
threading.Thread(target=self._run_callbacks, name="Message Callback", args=[m], daemon=True).start()
if self.window < self.window_max:
self.window += 1
if (self.window - self.window_min) > (self.window_flexibility-1):
self.window_min += 1
# TODO: Remove
RNS.log("Increased channel window to "+str(self.window), RNS.LOG_DEBUG)
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:
self.fast_rate_rounds = 0
else:
self.fast_rate_rounds += 1
if self.window_max < Channel.WINDOW_MAX_FAST and self.fast_rate_rounds == Channel.FAST_RATE_THRESHOLD:
self.window_max = Channel.WINDOW_MAX_FAST
# TODO: Remove
RNS.log("Increased max channel window to "+str(self.window_max), RNS.LOG_DEBUG)
except Exception as ex:
RNS.log(f"Channel: Error receiving data: {ex}")
@ -476,6 +460,30 @@ class Channel(contextlib.AbstractContextManager):
envelope.tracked = False
if envelope in self._tx_ring:
self._tx_ring.remove(envelope)
if self.window < self.window_max:
self.window += 1
if (self.window - self.window_min) > (self.window_flexibility-1):
self.window_min += 1
# TODO: Remove
RNS.log("Increased channel window to "+str(self.window), RNS.LOG_DEBUG)
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:
self.fast_rate_rounds = 0
else:
self.fast_rate_rounds += 1
if self.window_max < Channel.WINDOW_MAX_FAST and self.fast_rate_rounds == Channel.FAST_RATE_THRESHOLD:
self.window_max = Channel.WINDOW_MAX_FAST
# TODO: Remove
RNS.log("Increased max channel window to "+str(self.window_max), RNS.LOG_DEBUG)
else:
RNS.log("Channel: Envelope not found in TX ring", RNS.LOG_DEBUG)
if not envelope:
@ -527,6 +535,17 @@ class Channel(contextlib.AbstractContextManager):
raise ChannelException(CEType.ME_LINK_NOT_READY, f"Link is not ready")
envelope = Envelope(self._outlet, message=message, sequence=self._next_sequence)
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)
if envelope is None:
raise BlockingIOError()