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From "Gordon Sim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PROTON-1025) CLOSE_WAIT leak following reproducer for PROTON-1023 / PROTON-1024
Date Wed, 21 Oct 2015 13:28:27 GMT

    [ https://issues.apache.org/jira/browse/PROTON-1025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966806#comment-14966806
] 

Gordon Sim commented on PROTON-1025:
------------------------------------

The example above 'leaks' BlockingConnection instances. I.e. if rec2 is created successfully,
the while loop will proceed and the BlockingConnection instance will not have been closed
when a new instance is assigned to the conn variable.

Perhaps the BlockingConnection could close itself when it becomes unreferenced, but at present
the expectation is that it should be explicitly closed.

> CLOSE_WAIT leak following reproducer for PROTON-1023 / PROTON-1024
> ------------------------------------------------------------------
>
>                 Key: PROTON-1025
>                 URL: https://issues.apache.org/jira/browse/PROTON-1025
>             Project: Qpid Proton
>          Issue Type: Bug
>          Components: python-binding
>    Affects Versions: 0.10
>            Reporter: Pavel Moravec
>            Priority: Minor
>
> Following reproducer for PROTON-1023 or PROTON-1024 (attached at the botton), client
leaves some sockets in CLOSE_WAIT state forever.
> I tested the reproducer before & after those two fixes and it is present in both.
I.e. this bug is not a regression caused by PROTON-1023 or PROTON-1024.
> Reproducer:
> (assuming localhost runs qdrouterd that is restarted every 5 seconds in a loop):
> {code}
> #!/usr/bin/python
> from time import sleep
> from uuid import uuid4
> from proton import ConnectionException
> from proton.utils import BlockingConnection
> import traceback
> import random
> while True:
>   sleep(random.uniform(0.3,3))
>   try:
>     conn = BlockingConnection("proton+amqp://localhost:5672", ssl_domain=None, heartbeat=2)
>     rec = conn.create_receiver("another_address", name=str(uuid4()), dynamic=False, options=None)
>     print "sleeping.."
>     sleep(random.uniform(0.3,3))
>     rec2 = conn.create_receiver("some_address", name=str(uuid4()), dynamic=False, options=None)
>   except ConnectionException:
>     try:
>       if conn:
>         conn.close()
>     except Exception, e:
>       print e
>       print(traceback.format_exc())
> {code}



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