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Posted to dev@qpid.apache.org by "Andrew Stitcher (JIRA)" <ji...@apache.org> on 2019/05/03 13:50:00 UTC
[jira] [Comment Edited] (PROTON-2039) Python listener.close leaves
socket in time_wait
[ https://issues.apache.org/jira/browse/PROTON-2039?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16832513#comment-16832513 ]
Andrew Stitcher edited comment on PROTON-2039 at 5/3/19 1:49 PM:
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This actually might be a bug in the socket close behaviour - if the sockets are closed in the correct order then the server socket won't go into TIME_WAIT.
So this could be a bug in helloworld_direct rather than a library issue.
was (Author: astitcher):
This actually might be a bug in the socket close behaviour - if the sockets are closed in the correct order then the server socket won't go into TIME_WAIT.
> Python listener.close leaves socket in time_wait
> ------------------------------------------------
>
> Key: PROTON-2039
> URL: https://issues.apache.org/jira/browse/PROTON-2039
> Project: Qpid Proton
> Issue Type: Bug
> Components: python-binding
> Affects Versions: proton-c-0.27.1
> Environment: Fedora 29, python 3.7.3
> Fedora 28, python 2.7.15
> Reporter: Chuck Rolke
> Assignee: Chuck Rolke
> Priority: Major
> Attachments: PROTON-2039.patch
>
>
> To demonstrate: execute python/examples/helloworld_direct.py two times within a few seconds. The first time works and the second time fails with an 'Address already in use' error.
> The expectation is that this program can be run many times in quick succession.
>
> {code:java}
> (M=713c3 ?7) chug@unused examples> pwd
> /home/chug/git/qpid-proton/python/examples
> (M=713c3 ?7) chug@unused examples> ./helloworld_direct.py
> Hello World!
> (M=713c3 ?7) chug@unused examples> ./helloworld_direct.py
> Traceback (most recent call last):
> File "./helloworld_direct.py", line 48, in <module>
> Container(HelloWorld("localhost:8888/examples")).run()
> File "/opt/local/lib64/proton/bindings/python/proton/_reactor.py", line 181, in run
> while self.process(): pass
> File "/opt/local/lib64/proton/bindings/python/proton/_reactor.py", line 238, in process
> event.dispatch(handler)
> File "/opt/local/lib64/proton/bindings/python/proton/_events.py", line 138, in dispatch
> self.dispatch(h, type)
> File "/opt/local/lib64/proton/bindings/python/proton/_events.py", line 135, in dispatch
> _dispatch(handler, type.method, self)
> File "/opt/local/lib64/proton/bindings/python/proton/_events.py", line 115, in _dispatch
> m(*args)
> File "/opt/local/lib64/proton/bindings/python/proton/_handlers.py", line 476, in on_reactor_init
> self.on_start(event)
> File "./helloworld_direct.py", line 32, in on_start
> self.acceptor = event.container.listen(self.url)
> File "/opt/local/lib64/proton/bindings/python/proton/_reactor.py", line 1166, in listen
> acceptor = self.acceptor(url.host, url.port)
> File "/opt/local/lib64/proton/bindings/python/proton/_reactor.py", line 304, in acceptor
> a = Acceptor(self, unicode2utf8(host), int(port), impl)
> File "/opt/local/lib64/proton/bindings/python/proton/_reactor.py", line 678, in __init__
> sock = IO.listen(host, port)
> File "/opt/local/lib64/proton/bindings/python/proton/_io.py", line 46, in listen
> s.bind((host, port))
> OSError: [Errno 98] Address already in use
> 1 (M=713c3 ?7) chug@unused examples> ss -t -a -n | grep 8888
> TIME-WAIT 0 0 127.0.0.1:8888 127.0.0.1:42648
> {code}
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