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From Gregory Bayard <gregory.bay...@gmail.com>
Subject Re: Connection close automatically after 4 minutes
Date Tue, 08 Mar 2011 14:02:07 GMT
This seems to be a recurring theme with the .NET client.  There is a
solution claim at the following URL, but I haven't tried it yet:



On Tue, Mar 8, 2011 at 8:12 AM, Gordon Sim <gsim@redhat.com> wrote:
> On 03/04/2011 09:02 AM, Justin Cheong wrote:
>> Hi
>> I am using C++ broker ( version 0.8 ) on RHEL 4.My client is running on
>> .Net on Windows 7 and C++ RHEL. I downloaded from the file
>> qpid-dotnet-0-10-0.8.zip which supports C++ broker.
>> I am using the topic pub/sub example.I am sending message from RHEL and
>> receiving it from Windows7 machine.The sender is written in C++ in RHEL. The
>> receiver is written in C# in Windows7.All is working fine. But after almost
>> exactly 4 minutes, the broker will close the connection to my window client
>> and output the following line ( error Connection timed
>> out: closing ).
>> The sender is periodically sending message to the receiver at 1 second
>> interval during the whole process.
>> I have written another receiver program in C++ in RHEL to receive the same
>> message by listening to the same topic and routing key.When I run both
>> receiver ( Windows7&  RHEL ) and the sender, after 4 minutes the Windows7
>> receiver will stop receiving messages. The RHEL receiver continues to
>> receive message.
>> Anybody encounter such a problem?
> The error message would tend to indicate that its related to heartbeats.
> I'm not terribly familiar with that particular client, but looking at the
> source code it seems to just always accept the brokers maximum supported
> heartbeat interval (which happens to be 120 seconds, so two intervals would
> explain the 4 minutes timeout). I suspect the client is negotiating
> heartbeats on, but is then never sending them.
> Short of modifying the code to either turn off heartbeating or start sending
> heartbeats automatically in the library, you could try a workaround of
> sending a dummy message to the broker over the receivers connection every 2
> minutes (or something like a MessageAccept perhaps).
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