Temporaily Stopping Advertising

Question

Our product has a legacy interface and for security reasons I want to allow users to disable or enable the BLE via this legacy interface. 
 My approach to this was to disable or enable advertising. Is this the correct approach? What happens if a connection is active?

RK · Accepted Answer

Only you can answer this question as it's your application. What does your application need to happen if a connection is active when the interface is disabled? You have two choices, you can leave it connected or you can close the connection. Do whichever of those is correct for your own security scenario. 
 And yes you probably want to turn off connectable advertising, if you are advertising connectably, which you currently won't be if you are in connection (you'll be not advertising at all or advertising non-connectably) but that may be different in the future if you allow multiple connections when the softdevice allows that. Whether you continue to advertise non-connectably is also up to your application's requirements.