connectionStatusProvider burns CPU on disconnect

[higaski]

When the WebSocket closes, it catches the error, yields disconnected, then loops back and calls ref.read(z21ServiceProvider), which returns the same closed instance... basically a loop which burns CPU.

Frontend/lib/provider/connection_status.dart

Lines 27 to 55 in 3bce612

	@Riverpod(keepAlive: true)
	Stream<ConnectionStatus> connectionStatus(ref) async* {
	final timeout = ref.watch(
	settingsProvider.select(
	(config) =>
	config.value?.httpReceiveTimeout ?? Config().httpReceiveTimeout,
	),
	);
	ConnectionStatus? previousStatus;
	while (true) {
	final z21 = ref.read(z21ServiceProvider);
	try {
	await for (final _ in z21.stream.timeout(Duration(seconds: timeout))) {
	if (previousStatus != ConnectionStatus.connected) {
	previousStatus = ConnectionStatus.connected;
	yield previousStatus;
	}
	}
	} catch (_) {
	if (previousStatus != ConnectionStatus.disconnected) {
	previousStatus = ConnectionStatus.disconnected;
	yield previousStatus;
	}
	}
	}
	}