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websockets: (very) slightly nicer is_valid constraints

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This commit is contained in:
Aldo Cortesi 2015-04-21 23:49:27 +12:00
parent 176e29fc09
commit 4fb49c8e55
1 changed files with 3 additions and 5 deletions
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8
netlib/websockets.py
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@ -129,14 +129,12 @@ class Frame(object):
1 <= self.opcode <= 4,
0 <= self.mask_bit <= 1,
1 <= self.payload_length_code <= 127,
self.actual_payload_length == len(self.payload)
self.actual_payload_length == len(self.payload),
1 <= len(self.masking_key) <= 4 if self.mask_bit else True,
self.masking_key is not None if self.mask_bit else True
]
if not all(constraints):
return False
elif self.mask_bit == 1 and not 1 <= len(self.masking_key) <= 4:
return False
elif self.mask_bit == 0 and self.masking_key is not None:
return False
elif self.payload and self.masking_key:
decoded = apply_mask(self.payload, self.masking_key)
if decoded != self.decoded_payload: