How to tell if server connection has timed out.

[Ivan Smahin]

On 3/24/2011 3:49 AM, Chris Jones wrote:
> What is the best way using the C++ api to tell that the server has 
> timed out a user, ie they have been idle for longer than the time out 
> period?  I've tried get_IsConnected() but it returns a false 
> positive.  What I'm trying to do is detect the disconnect and attempt 
> to reconnect.

get_IsConnected() return false in two cases:

1. Connection is closed.
2. Communication error (exception on sending/receiving kTestConnection 
command) which leads to closing this connection.

You may get the last error from the connection.
Something like this:

...
VConnection* pConn;
....
if( pConn->get_IsConnected() == false )
{
   // Not connected anymore. Probably because of vServer time out.
   const String& lastErrorMsg = pConn->get_ErrorDescription();

   // Show user lastErrorMsg
  ...

   // Reconnect procedure
   ...
}

-- 
Best regards,
Ivan Smahin
Senior Software Engineer
Paradigma Software, Inc
Valentina - The Ultra-Fast Database
http://www.valentina-db.com