feat: use HEAD request for ping and leak detection

Author: javaherisaber

lib/bloc.dart

@@ -142,7 +142,7 @@ class AppBloc with AppSystemTray {
     _replaceLeakItemInChecklist(item);
     try {
       final url = Uri.parse(item.url);
-      final response = await _client.get(url).timeout(const Duration(seconds: 10));
+      final response = await _client.head(url).timeout(const Duration(seconds: 10));
       if (response.statusCode == 200) {
         item.status = LeakStatus.passed;
       } else {
@@ -201,7 +201,7 @@ class AppBloc with AppSystemTray {
     try {
       _isPingingGoogle = true;
       final url = Uri.parse('https://google.com');
-      await _client.get(url).timeout(const Duration(seconds: 5));
+      await _client.head(url).timeout(const Duration(seconds: 5));
     } on TimeoutException {
       _isPingingGoogle = false;
       _checkNetworkConnectivity();

lib/utils/http.dart

@@ -13,9 +13,9 @@ class HttpUtils {
       HttpHeaders.connectionHeader: 'keep-alive', // Ensure keep-alive headers
     });
     try {
-      await _dio.get(url).timeout(timeout); // just a warm up connection to get a reliable result
+      await _dio.head(url).timeout(timeout); // just a warm up connection to get a reliable result
       final firstTime = DateTime.now().millisecondsSinceEpoch;
-      final response = await _dio.get(url).timeout(timeout);
+      final response = await _dio.head(url).timeout(timeout);
       final secondTime = DateTime.now().millisecondsSinceEpoch;
       if (response.statusCode == 200 || response.statusCode == 204) {
         return (secondTime - firstTime).toDouble();