Lightstreamer Server Termination in a RobustNetworkedDataProvider Environment

bkretschmer

Hello,

When using the RobustNetworkedDataProvider implementation approach, if Lightstreamer fails then so do all connected Remote Data Adapters. We would like to capture the failure of the Data Adapter due to the termination of the Lightstreamer server. How might we do this?

Thank you,

Bill

Giuseppe Corti

By implementing handleIOException (instead HandleException) you could know when the connection to the Server is lost; but you can not distinguish between a failure of the server (or normal Server termination) and network problems.
However, the Lightstreamer server does not attempt to send any warning message to the Adapters in any case of termination, normal or caused by a failure.

bkretschmer

Yes, this approach was already tried. I can see the exception being raised in the Lighstreamer RequestReply.RequestReceiver.Run(); however, the handleIOException method is never invoked in our data provider class. (The class does implement the IExceptionHandler interface.)

Giuseppe Corti

In order that its methods are invoked, your object, instance of the IExceptionHandler interface, should be setted as ExceptionHandeler property of the Server class.
Can you confirm me that this is your case?

You can also refer to our example here, please refer to line 195 of the code.