# Connectivity

high level

# Example

/// Stream<Map<String, RelayConnectivity>>
/// key: relay url/identifier
/// value: relay connectivity
ndkInstance.connectivity.relayConnectivityChanges;


/// forces all relays to reconnect \
/// use this for faster reconnects based on your application/os connectivity \
tryReconnect();

example in a flutter app
  // listen to lifecycle changes
  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
 
    switch (state) {
      case AppLifecycleState.resumed:
        // reconnect instantly when resuming
        ndkInstance.connectivity.tryReconnect();
        break;
      case AppLifecycleState.inactive:
        break;
      case AppLifecycleState.paused:
        break;
      case AppLifecycleState.detached:
        break;
      case AppLifecycleState.hidden:
        break;
    }
  }

# When to use

Ndk uses exponential backoff to reconnect to relays.
The reconnect interval might be too long when the app is in the background and then resumed.
You can instantly reconnect using the tryReconnect() method, as shown in the example above.

relayConnectivityChanges can be used to display connectivity status in the UI.