Ievgen Popovych created PROTON-2776:
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Summary: Exception in IOHandler.on_selectable_expired/update after
wakeup from sleep
Key: PROTON-2776
URL: https://issues.apache.org/jira/browse/PROTON-2776
Project: Qpid Proton
Issue Type: Bug
Components: python-binding
Environment: Fedora GNU/Linux, python binding 0.38.0
Reporter: Ievgen Popovych
This occasionally happens after my laptop wakes up from overnight sleep.
IOHandler.on_selectable_expired() is invoked with selectable that has
_terminated=True and _transport=None so when IOHandler.update()
is called it crashes when trying to handle the exception
(since transport is None):
{noformat}
Traceback (most recent call last):
File "/path/.venv/lib/python3.7/site-packages/proton/_handlers.py", line 1293,
in update
capacity = transport.capacity()
AttributeError: 'NoneType' object has no attribute 'capacity'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/path/my-project.py", line 285, in run
self.container.run()
File "/path/.venv/lib/python3.7/site-packages/proton/_reactor.py", line 197, in
run
while self.process():
File "/path/.venv/lib/python3.7/site-packages/proton/_reactor.py", line 262, in
process
event.dispatch(self._global_handler)
File "/path/.venv/lib/python3.7/site-packages/proton/_events.py", line 158, in
dispatch
_dispatch(handler, type.method, self)
File "/path/.venv/lib/python3.7/site-packages/proton/_events.py", line 131, in
_dispatch
handler.on_unhandled(method, *args)
File "/path/.venv/lib/python3.7/site-packages/proton/_reactor.py", line 905, in
on_unhandled
event.dispatch(self.base)
File "/path/.venv/lib/python3.7/site-packages/proton/_events.py", line 158, in
dispatch
_dispatch(handler, type.method, self)
File "/path/.venv/lib/python3.7/site-packages/proton/_events.py", line 129, in
_dispatch
m(*args)
File "/path/.venv/lib/python3.7/site-packages/proton/_handlers.py", line 1237,
in on_selectable_expired
self.update(t, s, r.now)
File "/path/.venv/lib/python3.7/site-packages/proton/_handlers.py", line 1296,
in update
if transport.closed:
AttributeError: 'NoneType' object has no attribute 'closed'
{noformat}
I have proposed a fix at https://github.com/apache/qpid-proton/pull/364.
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