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@parsonsmatt parsonsmatt/props.py
Created Mar 15, 2016

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mmm property checking
def decode(data):
"""
Accepts a byte array and converts it into an Ack packet if possible. If the
decoding fails, then this method raises DecodeError. The following doc test
randomly samples legal values for the acknowledgment number and window size and
asserts that for all those values, Ack.decode(p.encode()) == p
>>> from random import *
>>> ack_nos = [randrange(int(1e6)) for i in range(1,10)]
>>> win_sizes = [randrange(int(1e3)) for i in range(1,10)]
>>> ps = [Ack(x, y) for x in ack_nos for y in win_sizes]
>>> [p for p in ps if Ack.decode(p.encode()) != p]
[]
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