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https://issues.apache.org/jira/browse/QPID-3553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gordon Sim resolved QPID-3553.
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Resolution: Fixed
Fix Version/s: 0.13
Assignee: Gordon Sim
Many thanks Siddhesh and Pavel!
> C++ broker does not handle multiple ConnectionTuneOk cleanly
> ------------------------------------------------------------
>
> Key: QPID-3553
> URL: https://issues.apache.org/jira/browse/QPID-3553
> Project: Qpid
> Issue Type: Bug
> Components: C++ Broker
> Reporter: Siddhesh Poyarekar
> Assignee: Gordon Sim
> Fix For: 0.13
>
> Attachments: multipleConnectionTuneOk.patch,
> qpid-duplicate-timer.patch
>
>
> If the C++ broker is sent ConnectionTuneOk more than once with heartbeat set,
> it creates that many timer tasks for the heartbeat. This will result in a
> case where a heartbeat task is triggered for a connection that has already
> been deleted.
> Steps to reproduce:
> 1) Start broker:
> MALLOC_MMAP_THRESHOLD_=8 qpidd
> The MALLOC_MMAP_THRESHOLD_ is to catch the use-after-free immediately rather
> than having to depend on a heap corruption
> 2) Run the following python script:
> import struct, time
> from qpid.framing import OpEncoder, SegmentEncoder, FrameEncoder
> from qpid.util import connect
> from qpid.ops import *
> def encode(op):
> print "Sending:", op
> op_enc = OpEncoder()
> seg_enc = SegmentEncoder()
> frame_enc = FrameEncoder()
> op_enc.write(op)
> seg_enc.write(*op_enc.read())
> frame_enc.write(*seg_enc.read())
> bytes = frame_enc.read()
> print " bytes:", repr(bytes)
> return bytes
> conn = connect("127.0.0.1", 5672)
> conn.send(struct.pack("!4s4B", "AMQP", 1, 1, 0, 10))
> conn.send(encode(ConnectionTuneOk(heartbeat=1)))
> conn.send(encode(ConnectionTuneOk(heartbeat=1)))
> conn.send(encode(ConnectionOpen(virtual_host="vhost-blah",channel=0)))
> time.sleep(3)
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