85 lines
3 KiB
Dart
85 lines
3 KiB
Dart
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// Haveno App extends the features of Haveno, supporting mobile devices and more.
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// Copyright (C) 2024 Kewbit (https://kewbit.org)
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// Source Code: https://git.haveno.com/haveno/haveno-app.git
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//
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// Author: Kewbit
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// Website: https://kewbit.org
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// Contact Email: me@kewbit.org
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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import 'package:haveno/haveno_client.dart';
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import 'package:haveno_app/services/secure_storage_service.dart';
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import 'package:haveno_app/services/tor_interface.dart';
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import 'package:internet_connection_checker_plus/internet_connection_checker_plus.dart';
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class ConnectionCheckerService {
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// Private named constructor
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ConnectionCheckerService._internal();
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// The single instance of the class
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static final ConnectionCheckerService _instance = ConnectionCheckerService._internal();
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// Factory constructor to return the same instance
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factory ConnectionCheckerService() {
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return _instance;
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}
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final SecureStorageService secureStorageService = SecureStorageService();
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final HavenoChannel havenoService = HavenoChannel();
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// Cache for isTorConnected status
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bool? _torConnectedCache;
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DateTime? _torCacheTimestamp;
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final Duration _torCacheDuration = const Duration(minutes: 3);
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// Method to check if the cache is still valid
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bool _isTorCacheValid() {
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if (_torCacheTimestamp == null) return false;
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return DateTime.now().difference(_torCacheTimestamp!) < _torCacheDuration;
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}
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// Cached version of isTorConnected
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Future<bool> isTorConnected() async {
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// If cache is valid, return the cached value
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if (_isTorCacheValid() && _torConnectedCache == true) {
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print("Returning cached Tor connection status: $_torConnectedCache");
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return _torConnectedCache!;
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}
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// Otherwise, perform the check
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bool isConnected = await TorService.isTorConnected();
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// If Tor is connected, cache the result and timestamp
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if (isConnected) {
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_torConnectedCache = true;
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_torCacheTimestamp = DateTime.now();
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print("Caching successful Tor connection status.");
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} else {
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// If not connected, invalidate the cache
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_torConnectedCache = false;
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_torCacheTimestamp = null;
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}
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return isConnected;
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}
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Future<bool> isHavenoDaemonConnected() async {
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print("Haveno Daemon Connection Status: ${havenoService.isConnected}");
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return havenoService.isConnected;
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}
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Future<bool> isInternetConnected() async => await InternetConnection().hasInternetAccess;
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}
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