I have program running about 2 weeks, im using BACnet4J as a gateway to PIV object (mapping PIV to MV) and i haven't problem, every think was ok. But on few days I have problem because the remote device list in DEV object is empty and my MV don't change PIV value, when I manually restart te program, remote device is visible in DEV object in remote device list. I adding remote device like this:

            localDevice.initialize();
            localDevice.sendGlobalBroadcast(localDevice.getIAm());
            localDevice.sendGlobalBroadcast(new WhoIsRequest());


            localDevice.getRemoteDeviceBlocking(200);

            List<RemoteDevice> remoteDevices = localDevice.getRemoteDevices();

            for (RemoteDevice device : remoteDevices) {

               //some code
             
            }

200 is instance of remote device

I adding this after I initialising local device (in the same try/catch) Whats going on? Any ideas?

I send SubscribeCOVPropertyRequest with VTS program. In BACnet4J I see this request in

localDevice.getEventHandler().addListener(new DeviceEventListener()

requestReceived (not in covNotificationReceived). VTS program returns information about the error as if BACnet4J was unable to handle this query. I do not know how to activate the option of sending values ​​to the device that requested it.

Filters queries to get subscriptions only from another device

if (service.getChoiceId() == 28)

I don't really see the possibility of extracting information about a point that is to send a value to a device in a net, where this information might be?

How to accept subscriptions of another device?

I have program running about 2 weeks, im using BACnet4J as a gateway to PIV object (mapping PIV to MV) and i haven't problem, every think was ok. But on few days I have problem because the remote device list in DEV object is empty and my MV don't change PIV value, when I manually restart te program, remote device is visible in DEV object in remote device list. I adding remote device like this:

            localDevice.initialize();
            localDevice.sendGlobalBroadcast(localDevice.getIAm());
            localDevice.sendGlobalBroadcast(new WhoIsRequest());


            localDevice.getRemoteDeviceBlocking(200);

            List<RemoteDevice> remoteDevices = localDevice.getRemoteDevices();

            for (RemoteDevice device : remoteDevices) {

               //some code
             
            }

200 is instance of remote device

I adding this after I initialising local device (in the same try/catch) Whats going on? Any ideas?