Re: ACPI Sleep and connection persistence

Hi Alexis,

There were no known issues regarding the reported problem. "Connection 
closed by CIM server." usually means that either cimserver has crashed or 
restarted or connection closed with idleConnectionTimeout expired. Latest 
version of Pegasus client (2.11.0) reconnects automatically if the 
connection is closed. Test with the latest version of code or provide the 
stack trace of the client when crash happens for the further debugging.

Venkat



From:   Alexis Boisserand <[email protected]>
To:     OpenPegasus Mailing List <[email protected]>
Date:   04/05/2011 23:05
Subject:        ACPI Sleep and connection persistence



Hi everyone,

We are developing a CIM client application on Windows 7 x86 with the
OpenPegasus client library. The CIMOM we use is OpenPegasus 2.9.1. Our
client keeps connected locally (we use the connectLocal() method) to the
CIMOM and issues some CIM operations. Our problem is the following:
while the application is running if the machine enters the ACPI sleep
mode, when it comes back from the sleep mode and tries to issue CIM
operations again, the operations fail and throw an exception with the
message "Connection closed by CIM server.", the type of this exception
is neither NotConnectedException nor ConnectionTimeoutException. We
first tried to make a client that tries to reconnect silently when this
exception is thrown, but when we try to reconnect, our application
crashes. It seems that the client is in an inconsistent state, neither
connected nor disconnected. To my knowledge entering and coming back
from the sleep mode is supposed to be transparent for the applications,
and any application should come back from the sleep mode in the same
state that it entered it. My questions are the following: 

- Is this a known limitation of OpenPegasus?
- If not, has anyone any idea of what could be the cause of this
problem?
- Would not there be some workaround to prevent this from happening?

Thanks for your answers,

-- 
Alexis Boisserand        [email protected]              +55
51 3220 3293
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