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Fix stack trimming. #1

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Fix stack trimming. #1

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6 changes: 4 additions & 2 deletions proxy/flow_stack.py
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,7 @@ class FlowStack:
"""FlowStack class."""

stack = {}
cookies = []

def __init__(self, max_size: int = 1024) -> None:
"""Construct a new FlowStack."""
Expand All @@ -85,6 +86,7 @@ def set_flow(
flow = Flow(
cookie, direction_allowed, transport_allowed, application_allowed, direction
)
self.cookies.append(cookie)
else:
if direction_allowed is not None:
flow.direction_allowed = direction_allowed
Expand All @@ -107,6 +109,6 @@ def get_flow(self, cookie: bytes) -> Flow:
return None

def trim_stack(self) -> None:
"""Drop the oldest flows to resize the stack to max size."""
"""Drop the oldest flow to resize the stack to max size."""
if len(self.stack) > self.max_size:
self.stack = self.stack[-self.max_size:]
self.stack.pop(self.cookies.pop(0))