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Changed the way we handle an empty lifetime in APDU looking for None instead of 0 to fix a Runtime error when install_task gets a delta of None

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Christian Tremblay, ing 2020-10-25 20:32:58 -04:00
parent d91a7e388a
commit 859cb49c9b
1 changed files with 3 additions and 4 deletions
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py34/bacpypes/service/cov.py
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@ -102,10 +102,9 @@ class Subscription(OneShotTask, DebugContents):
self.proc_id = proc_id
self.obj_id = obj_id
self.confirmed = confirmed
self.lifetime = lifetime
# if lifetime is non-zero, schedule the subscription to expire
if lifetime != 0:
# if lifetime is none, consider permanent subscription (0)
self.lifetime = 0 if lifetime is None else lifetime
self.install_task(delta=self.lifetime)
def cancel_subscription(self):