feat(bt): support disabling DHT and PEX (#1555)

ui/flutter/lib/api/model/downloader_config.dart

@@ -105,6 +105,8 @@ class BtConfig {
   bool seedKeep;
   double seedRatio;
   int seedTime;
+  bool disableDht;
+  bool disablePex;
 
   BtConfig({
     this.listenPort = 0,
@@ -112,6 +114,8 @@ class BtConfig {
     this.seedKeep = false,
     this.seedRatio = 0,
     this.seedTime = 0,
+    this.disableDht = false,
+    this.disablePex = false,
   });
 
   factory BtConfig.fromJson(Map<String, dynamic> json) => _$BtConfigFromJson(json);

ui/flutter/lib/api/model/downloader_config.g.dart

@@ -98,6 +98,8 @@ BtConfig _$BtConfigFromJson(Map<String, dynamic> json) => BtConfig(
   seedKeep: json['seedKeep'] as bool? ?? false,
   seedRatio: (json['seedRatio'] as num?)?.toDouble() ?? 0,
   seedTime: (json['seedTime'] as num?)?.toInt() ?? 0,
+  disableDht: json['disableDht'] as bool? ?? false,
+  disablePex: json['disablePex'] as bool? ?? false,
 );
 
 Map<String, dynamic> _$BtConfigToJson(BtConfig instance) => <String, dynamic>{
@@ -106,6 +108,8 @@ Map<String, dynamic> _$BtConfigToJson(BtConfig instance) => <String, dynamic>{
   'seedKeep': instance.seedKeep,
   'seedRatio': instance.seedRatio,
   'seedTime': instance.seedTime,
+  'disableDht': instance.disableDht,
+  'disablePex': instance.disablePex,
 };
 
 Ed2kConfig _$Ed2kConfigFromJson(Map<String, dynamic> json) => Ed2kConfig(

ui/flutter/lib/features/settings/presentation/pages/settings_page.dart

@@ -623,6 +623,22 @@ class _SettingsPageState extends ConsumerState<SettingsPage> {
                       max: 65535,
                     ),
                   ),
+                  SettingsItem(
+                    title: context.l10n.enableDht,
+                    subtitle: context.l10n.restartRequired,
+                    child: shad.Switch(
+                      value: !config.protocolConfig.bt.disableDht,
+                      onChanged: (value) => _mutateConfig((next) => next.protocolConfig.bt.disableDht = !value),
+                    ),
+                  ),
+                  SettingsItem(
+                    title: context.l10n.enablePex,
+                    subtitle: context.l10n.restartRequired,
+                    child: shad.Switch(
+                      value: !config.protocolConfig.bt.disablePex,
+                      onChanged: (value) => _mutateConfig((next) => next.protocolConfig.bt.disablePex = !value),
+                    ),
+                  ),
                   SettingsItem(
                     title: context.l10n.seedKeep,
                     child: shad.Switch(

ui/flutter/lib/l10n/app_ar.arb

@@ -154,6 +154,8 @@
   "seedKeep": "الاستمرار في المشاركة حتى الإيقاف اليدوي",
   "seedRatio": "نسبة المشاركة",
   "seedTime": "مدة المشاركة (دقائق)",
+  "enableDht": "تفعيل DHT",
+  "enablePex": "تفعيل PEX",
   "setAsDefaultBtClient": "تعيين كعميل تورنت افتراضي",
   "taskDetail": "تفاصيل المهمة",
   "taskName": "اسم المهمة",

ui/flutter/lib/l10n/app_az.arb

@@ -161,6 +161,8 @@
   "seedKeep": "Əl ilə dayandırılana qədər seed etməyə davam et",
   "seedRatio": "Seed nisbəti",
   "seedTime": "Seed müddəti (dəqiqə)",
+  "enableDht": "DHT-ni aktivləşdir",
+  "enablePex": "PEX-i aktivləşdir",
   "setAsDefaultBtClient": "Standart BT müştərisi kimi təyin et",
   "taskDetail": "Tapşırıq Detalları",
   "taskName": "Tapşırığın Adı",

ui/flutter/lib/l10n/app_ca.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Continua sembrant fins que s'aturi manualment",
   "seedRatio": "Proporció de les llavors",
   "seedTime": "Temps de la llavor (minuts)",
+  "enableDht": "Activa DHT",
+  "enablePex": "Activa PEX",
   "setAsDefaultBtClient": "Estableix com a client BT per defecte",
   "taskDetail": "Detall de la tasca",
   "taskName": "Nom de la tasca",

ui/flutter/lib/l10n/app_de.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Weiter-seeden bis manuell gestoppt",
   "seedRatio": "Seed Verhältniss",
   "seedTime": "Seed-Zeit (Minuten)",
+  "enableDht": "DHT aktivieren",
+  "enablePex": "PEX aktivieren",
   "setAsDefaultBtClient": "Als Standard-BT-Client festlegen",
   "taskDetail": "Aufgabendetails",
   "taskName": "Aufgabenname",

ui/flutter/lib/l10n/app_en.arb

@@ -168,6 +168,8 @@
   "seedKeep": "Keep seeding until manually stopped",
   "seedRatio": "Seed ratio",
   "seedTime": "Seed time (minutes)",
+  "enableDht": "Enable DHT",
+  "enablePex": "Enable PEX",
   "setAsDefaultBtClient": "Set as the default BT client",
   "taskDetail": "Task Detail",
   "taskName": "Task Name",

ui/flutter/lib/l10n/app_es.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Mantener sembrado",
   "seedRatio": "Ratio de semilla",
   "seedTime": "Tiempo de semilla (minutos)",
+  "enableDht": "Activar DHT",
+  "enablePex": "Activar PEX",
   "setAsDefaultBtClient": "Establecer como el cliente BT predeterminado",
   "taskDetail": "Detalles de la Tarea",
   "taskName": "Nombre de la Tarea",

ui/flutter/lib/l10n/app_fa.arb

@@ -154,6 +154,8 @@
   "seedKeep": "بذر را نگه دارید تا زمانی که به صورت دستی متوقف شود",
   "seedRatio": "نسبت دید",
   "seedTime": "زمان ( دقیقه)",
+  "enableDht": "فعال‌سازی DHT",
+  "enablePex": "فعال‌سازی PEX",
   "setAsDefaultBtClient": "تنظیم به‌عنوان کلاینت پیش‌فرض BT",
   "taskDetail": "جزئیات وظیفه",
   "taskName": "نام وظیفه",

ui/flutter/lib/l10n/app_fr.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Continuer à semer jusqu'à ce qu'il soit arrêté manuellement",
   "seedRatio": "Taux de semences",
   "seedTime": "Temps de semis (minutes)",
+  "enableDht": "Activer DHT",
+  "enablePex": "Activer PEX",
   "setAsDefaultBtClient": "Définir comme le client BT par défaut",
   "taskDetail": "Détail de la tâche",
   "taskName": "Nom de la tâche",

ui/flutter/lib/l10n/app_hu.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Tartsa a seedet amíg manuálisan le nem állítják",
   "seedRatio": "Seed arány",
   "seedTime": "Seed idő (perc)",
+  "enableDht": "DHT engedélyezése",
+  "enablePex": "PEX engedélyezése",
   "setAsDefaultBtClient": "Alapértelmezett BT klienseként beállít",
   "taskDetail": "Feladat részlete",
   "taskName": "Feladat neve",

ui/flutter/lib/l10n/app_id.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Terus seeding hingga dihentikan secara manual",
   "seedRatio": "Rasio Seed",
   "seedTime": "Waktu Seed (menit)",
+  "enableDht": "Aktifkan DHT",
+  "enablePex": "Aktifkan PEX",
   "setAsDefaultBtClient": "Atur sebagai klien baku BT",
   "taskDetail": "Detail Tugas",
   "taskName": "Nama Tugas",

ui/flutter/lib/l10n/app_it.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Continuare a vedere fino a quando non è stato interrotto manualmente",
   "seedRatio": "Rapporto di taglio",
   "seedTime": "Tempo di seme (minuti)",
+  "enableDht": "Abilita DHT",
+  "enablePex": "Abilita PEX",
   "setAsDefaultBtClient": "Impostare come client BT predefinito",
   "taskDetail": "Dettaglio delle attività",
   "taskName": "Nome della missione",

ui/flutter/lib/l10n/app_ja.arb

@@ -154,6 +154,8 @@
   "seedKeep": "手動で停止するまでシードを継続する",
   "seedRatio": "シード共有比",
   "seedTime": "シード時間 (分)",
+  "enableDht": "DHT を有効にする",
+  "enablePex": "PEX を有効にする",
   "setAsDefaultBtClient": "デフォルトのBTクライアントとして設定",
   "taskDetail": "タスク詳細",
   "taskName": "タスク名",

ui/flutter/lib/l10n/app_ko.arb

@@ -154,6 +154,8 @@
   "seedKeep": "수동으로 중지할 때까지 계속 시드",
   "seedRatio": "시드 비율",
   "seedTime": "시드 시간(분)",
+  "enableDht": "DHT 사용",
+  "enablePex": "PEX 사용",
   "setAsDefaultBtClient": "기본 BT 클라이언트로 설정",
   "taskDetail": "작업 상세 정보",
   "taskName": "작업 이름",

ui/flutter/lib/l10n/app_pl.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Siew siewny do momentu ręcznego zatrzymania",
   "seedRatio": "Stosunek materiału siewnego",
   "seedTime": "Czas nasadzenia (minuty)",
+  "enableDht": "Włącz DHT",
+  "enablePex": "Włącz PEX",
   "setAsDefaultBtClient": "Ustaw jako domyślny klient BT",
   "taskDetail": "Szczegóły zadania",
   "taskName": "Nazwa zadania",

ui/flutter/lib/l10n/app_pt.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Manter a semeadura até parar manualmente",
   "seedRatio": "Relação entre sementes",
   "seedTime": "Tempo de semente (minutos)",
+  "enableDht": "Ativar DHT",
+  "enablePex": "Ativar PEX",
   "setAsDefaultBtClient": "Definir como o cliente BT padrão",
   "taskDetail": "Detalhes da Tarefa",
   "taskName": "Nome da Tarefa",

ui/flutter/lib/l10n/app_ru.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Раздавать пока не остановлю вручную",
   "seedRatio": "Коэффициент раздачи",
   "seedTime": "Время раздачи (минуты)",
+  "enableDht": "Включить DHT",
+  "enablePex": "Включить PEX",
   "setAsDefaultBtClient": "Установить как клиент BT по умолчанию",
   "taskDetail": "Детали задания",
   "taskName": "Название задачи",

ui/flutter/lib/l10n/app_sk.arb

@@ -168,6 +168,8 @@
   "seedKeep": "Pokračovať v seedovaní až do manuálneho zastavenia",
   "seedRatio": "Pomer seedovania",
   "seedTime": "Čas seedovania (minúty)",
+  "enableDht": "Povoliť DHT",
+  "enablePex": "Povoliť PEX",
   "setAsDefaultBtClient": "Nastaviť ako predvoleného BT klienta",
   "taskDetail": "Detail úlohy",
   "taskName": "Názov úlohy",

ui/flutter/lib/l10n/app_ta.arb

@@ -154,6 +154,8 @@
   "seedKeep": "கைமுறையாக நிறுத்தப்படும் வரை விதைப்பதைத் தொடரவும்",
   "seedRatio": "விதை விகிதம்",
   "seedTime": "விதை நேரம் (நிமிடங்கள்)",
+  "enableDht": "DHT ஐ இயக்கு",
+  "enablePex": "PEX ஐ இயக்கு",
   "setAsDefaultBtClient": "இயல்புநிலை BT கிளையண்டாக அமைக்கவும்",
   "taskDetail": "பணி விவரம்",
   "taskName": "செயல் பெயர்",

ui/flutter/lib/l10n/app_tr.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Manuel olarak durdurulana kadar seed'e devam et",
   "seedRatio": "Seed oranı",
   "seedTime": "Seed süresi (dakika)",
+  "enableDht": "DHT'yi etkinleştir",
+  "enablePex": "PEX'i etkinleştir",
   "setAsDefaultBtClient": "Varsayılan BitTorrent istemcisi olarak ayarla",
   "taskDetail": "İşlem Detayı",
   "taskName": "İşlem Adı",

ui/flutter/lib/l10n/app_uk.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Роздавати доки не зупиню вручну",
   "seedRatio": "Коефіцієнт роздачі",
   "seedTime": "Час роздачі (хвилини)",
+  "enableDht": "Увімкнути DHT",
+  "enablePex": "Увімкнути PEX",
   "setAsDefaultBtClient": "Встановити як клієнт BT за замовчуванням",
   "taskDetail": "Деталі завдання",
   "taskName": "Назва завдання",

ui/flutter/lib/l10n/app_vi.arb

@@ -154,6 +154,8 @@
   "seedKeep": "Giữ hạt giống cho đến khi tay dừng lại",
   "seedRatio": "Tốc độ Hạt giống",
   "seedTime": "Thời gian hạt giống ( Phút)",
+  "enableDht": "Bật DHT",
+  "enablePex": "Bật PEX",
   "setAsDefaultBtClient": "Đặt là trình khách BT mặc định",
   "taskDetail": "Chi tiết tác vụ",
   "taskName": "Tên tác vụ",

ui/flutter/lib/l10n/app_zh.arb

@@ -154,6 +154,8 @@
   "seedKeep": "持续做种直到手动停止",
   "seedRatio": "做种分享率",
   "seedTime": "做种时间（分钟）",
+  "enableDht": "启用 DHT",
+  "enablePex": "启用 PEX",
   "setAsDefaultBtClient": "设为系统默认 BT 客户端",
   "taskDetail": "任务详情",
   "taskName": "任务名称",

ui/flutter/lib/l10n/app_zh_TW.arb

@@ -154,6 +154,8 @@
   "seedKeep": "持續做種直到手動停止",
   "seedRatio": "做種分享率",
   "seedTime": "做種時間（分鐘）",
+  "enableDht": "啟用 DHT",
+  "enablePex": "啟用 PEX",
   "setAsDefaultBtClient": "設為系統預設 BT 客戶端",
   "taskDetail": "任務詳情",
   "taskName": "任務名稱",

ui/flutter/test/api/downloader_config_test.dart

@@ -36,6 +36,28 @@ void main() {
     expect(decoded.token, 'secret');
   });
 
+  test('BitTorrent peer discovery settings round-trip with the Go json keys', () {
+    final config = DownloaderConfig();
+    config.protocolConfig.bt
+      ..disableDht = true
+      ..disablePex = true;
+
+    final json = config.toJson();
+    final bt = (json['protocolConfig'] as Map<String, dynamic>)['bt'] as Map<String, dynamic>;
+    expect(bt['disableDht'], isTrue);
+    expect(bt['disablePex'], isTrue);
+
+    final decoded = DownloaderConfig.fromJson(json).protocolConfig.bt;
+    expect(decoded.disableDht, isTrue);
+    expect(decoded.disablePex, isTrue);
+  });
+
+  test('BitTorrent peer discovery stays on when a stored config lacks the keys', () {
+    final bt = BtConfig.fromJson({'listenPort': 6881, 'seedRatio': 1.0});
+    expect(bt.disableDht, isFalse);
+    expect(bt.disablePex, isFalse);
+  });
+
   test('Flutter preferences round-trip through the Go-owned extra config', () {
     final config = DownloaderConfig();
     config.extra