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From "FangYu (JIRA)" <>
Subject [jira] Commented: (AMQCPP-333) When disconnect MQ and try to reconnect, MqClient may crash
Date Thu, 25 Nov 2010 06:35:41 GMT


FangYu commented on AMQCPP-333:

Mainly it is difficult to reproduce, and this is complex to provide our client. We do not
use the Failover mode you provide, just write a Client as same as it.

This is the information my workmate provide to me:

Once the client detected disconnection, it will be re-connected, re-connected crash when cleaning
up resources, this is not inevitable. Rarely reproduce.

> When disconnect MQ and try to reconnect, MqClient may crash
> -----------------------------------------------------------
>                 Key: AMQCPP-333
>                 URL:
>             Project: ActiveMQ C++ Client
>          Issue Type: Bug
>    Affects Versions: 3.2.3
>         Environment: Window XP,
> Visual Studio Team System 2008
>            Reporter: FangYu
>            Assignee: Timothy Bish
>   Original Estimate: 1 week
>  Remaining Estimate: 1 week
> This issue is found by my workmate, when disconnect the MqServer(stop server or cutdown
the network), MqClient tried to reconnect the server, sometimes the client is the
exception stack:
> exception code c0000005, flags 0 address 807d53 exception stack is:
> NetMgrServer.exe caused a EXCEPTION_ACCESS_VIOLATION in module activemq-cpp.dll at 001B:00807D53,
activemq::core::ActiveMQConnection::syncRequest()+227 byte(s)
> EAX=04D0F300  EBX=04D0FA9C  ECX=00000000  EDX=04D0F4C8  ESI=02DE5320
> EDI=0058E700  EBP=04D0F4C0  ESP=04D0F12C  EIP=00807D53  FLG=00010206
> CS=001B   DS=0023  SS=0023  ES=0023   FS=003B  GS=0000
> 001B:00807D53 (0x00903F80 0x02D4B400 0x02D8C930 0x00003A98) activemq-cpp.dll, activemq::core::ActiveMQConnection::syncRequest()+227
> 001B:008092E7 (0x04D0F7B0 0x00003A98 0x176FD90E 0x0058E700) activemq-cpp.dll, activemq::core::ActiveMQConnection::disposeOf()+279
> 001B:008094D5 (0x176FD89A 0x0058E700 0x02DE5320 0x04D0FA9C) activemq-cpp.dll, activemq::core::ActiveMQConnection::disconnect()+181
> 001B:00809872 (0x176FDB26 0x0058E700 0x02DE5320 0x04D0FA9C) activemq-cpp.dll, activemq::core::ActiveMQConnection::close()+434
> 001B:00809AEF (0x02DE5D28 0x04D0FAA8 0x0057D1E3 0x00000001) activemq-cpp.dll, activemq::core::ActiveMQConnection::~ActiveMQConnection()+111
> 001B:00620830 (0x00000001 0x175A1078 0x005918A0 0x02DE5320) activemq-cpp.dll, decaf::lang::Comparable<activemq::commands::XATransactionId>::~Comparable<activemq::commands::XATransactionId>()+736
> 001B:0057D1E3 (0x02DE5320 0x175A1068 0x02DE5320 0x04D0FF0C) NetManagerServer.dll, HPR_Guard::operator=()+49331
> 001B:00578E83 (0x00000002 0x00001E30 0x00000000 0x00000000) NetManagerServer.dll, HPR_Guard::operator=()+32083
> 001B:FFFFFFFE (0x001567E0 0x00156790 0x00000000 0x00000000) <UNKNOWN>

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