[rabbitmq-discuss] .NET client: intermittentAlreadyClosedException - connected host has failed to respond

[Chen, Bin]

Hi Matthias,

I've been tracing the AlreadyClosedException problem in my system
recently.
In my case, the AlreadyClosedException is originally caused by the error
"Frame received for invalid channel xxx".

I read the .NET client code. When the main loop of ConnectionBase
receives a frame of an unknown session, 
an ChannelErrorException exception is thrown with the error message "
received for invalid channel xxx".

Because of that exception, the whole connection is shut down.

My questions are:

1) Why could "Frame received for invalid channel ???" error happen? 
   My client code always uses Close() to close a Model.
   Is this a bug in server side?

   
2) Can we add a property in ConnectionBase to allow ignoring the above
"Frame received for invalid channel xxx" error?
   A single bad frame should not ruin the whole connection.


Regards,
Bin Chen


-----Original Message-----
From: Matthias Radestock [mailto:matthias at rabbitmq.com] 
Sent: Friday, December 21, 2012 11:46 AM
To: Discussions about RabbitMQ
Cc: Chen, Bin
Subject: Re: [rabbitmq-discuss] .NET client:
intermittentAlreadyClosedException - connected host has failed to
respond

On 21/12/12 19:38, Chen, Bin wrote:
> I forgot to mention that our client code does set up the heartbeat for

> 10s.
> Somehow, the intermittent AlreadyClosedException still happens.

Hmm. that's odd.

Is there anything of interest in the server logs?

Regardless, I do suggest you upgrade to 3.0.1.

Regards,

Matthias