Server Health Monitoring (Host Reachability)

Goal

Monitor the configured host reachability and switch to a fallback when it becomes unreachable.

Prerequisite

Set the host address in Essential Kit settings (Network Services section).

Actions used

• NetworkServicesStartNotifier

• NetworkServicesOnHostReachabilityChanged (persistent listener)

• NetworkServicesGetStatus (optional)

Variables

• isHostReachable (Bool)

Flow

1. On app launch: call NetworkServicesStartNotifier.

2. Keep NetworkServicesOnHostReachabilityChanged in an active state:

   • eventReachable → use primary host

   • eventUnreachable → show maintenance / switch to backup

3. Optional: call NetworkServicesGetStatus whenever you need the latest booleans (isHostReachable, isInternetActive).