friend_timeout() function

Implements the first half of the start process. This just enqueues another event on the host parent task's event queue. Starting is done in two stages to allow the application time to configure the event queue to use after system initialization but before the host starts.

Implements the second half of the start process. This actually starts the host. Starting is done in two stages to allow the application time to configure the event queue to use after system initialization but before the host starts.

This is called when host graceful disconnect timeout fires. That means some devices are out of range and disconnection completed did no happen yet.

Called when the host timer expires. Handles unresponsive timeouts and periodic retries in case of resource shortage.

Called when the Resolvable private address timer expires. This timer is used to regenerate local and peers RPA's in the resolving list.