Add support for "optimize tcp buffers" option per profile.

 - It tunes down the local sslocal listener socket buffers which is the right thing to do in 99.999% of cases of mobile app.
 - It additionally also tunes down the remote socket buffers of sslocal when a plugin is used. This is needed to ensure there's no bufferbloat between sslocal and the plugin itself.
 - Ideally the plugin on its side should also choke its local listening socket buffers and leave only its remote side socket buffers unrestricted.

core/schemas/com.github.shadowsocks.database.PrivateDatabase/29.json

@@ -2,11 +2,11 @@
  "formatVersion": 1,
  "database": {
  "version": 29,
- "identityHash": "5b5c55a1277c63e14416316f9198ed43",
+ "identityHash": "edf35c5851b4cb55bb5dbbf278199450",
  "entities": [
  {
  "tableName": "Profile",
- "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT, `host` TEXT NOT NULL, `remotePort` INTEGER NOT NULL, `password` TEXT NOT NULL, `method` TEXT NOT NULL, `route` TEXT NOT NULL, `remoteDns` TEXT NOT NULL, `proxyApps` INTEGER NOT NULL, `bypass` INTEGER NOT NULL, `udpdns` INTEGER NOT NULL, `ipv6` INTEGER NOT NULL, `metered` INTEGER NOT NULL, `individual` TEXT NOT NULL, `plugin` TEXT, `udpFallback` INTEGER, `subscription` INTEGER NOT NULL, `tx` INTEGER NOT NULL, `rx` INTEGER NOT NULL, `userOrder` INTEGER NOT NULL)",
+ "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT, `host` TEXT NOT NULL, `remotePort` INTEGER NOT NULL, `password` TEXT NOT NULL, `method` TEXT NOT NULL, `route` TEXT NOT NULL, `remoteDns` TEXT NOT NULL, `proxyApps` INTEGER NOT NULL, `bypass` INTEGER NOT NULL, `udpdns` INTEGER NOT NULL, `ipv6` INTEGER NOT NULL, `metered` INTEGER NOT NULL, `individual` TEXT NOT NULL, `plugin` TEXT, `udpFallback` INTEGER, `optimizeBuffers` INTEGER NOT NULL, `subscription` INTEGER NOT NULL, `tx` INTEGER NOT NULL, `rx` INTEGER NOT NULL, `userOrder` INTEGER NOT NULL)",
  "fields": [
  {
  "fieldPath": "id",
@@ -104,6 +104,12 @@
  "affinity": "INTEGER",
  "notNull": false
  },
+ {
+ "fieldPath": "optimizeBuffers",
+ "columnName": "optimizeBuffers",
+ "affinity": "INTEGER",
+ "notNull": true
+ },
  {
  "fieldPath": "subscription",
  "columnName": "subscription",
@@ -130,10 +136,10 @@
  }
  ],
  "primaryKey": {
+ "autoGenerate": true,
  "columnNames": [
  "id"
- ],
- "autoGenerate": true
+ ]
  },
  "indices": [],
  "foreignKeys": []
@@ -162,10 +168,10 @@
  }
  ],
  "primaryKey": {
+ "autoGenerate": false,
  "columnNames": [
  "key"
- ],
- "autoGenerate": false
+ ]
  },
  "indices": [],
  "foreignKeys": []
@@ -174,7 +180,7 @@
  "views": [],
  "setupQueries": [
  "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
- "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, '5b5c55a1277c63e14416316f9198ed43')"
+ "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, 'edf35c5851b4cb55bb5dbbf278199450')"
  ]
  }
 }

core/src/main/java/com/github/shadowsocks/bg/ProxyInstance.kt

@@ -117,10 +117,22 @@ class ProxyInstance(val profile: Profile, private val route: String = profile.ro
  val cmd = arrayListOf(
  File((service as Context).applicationInfo.nativeLibraryDir, Executable.SS_LOCAL).absolutePath,
  "--stat-path", stat.absolutePath,
- "-c", configFile.absolutePath,
+ "-c", configFile.absolutePath
  )
 
- if (service.isVpnService) cmd += "--vpn"
+ if (profile.optimizeBuffers) {
+ cmd += "--inbound-send-buffer-size 16384"
+ cmd += "--inbound-recv-buffer-size 16384"
+
+ if (profile.plugin?.isNotBlank() == true) {
+ cmd += "--outbound-send-buffer-size 16384"
+ cmd += "--outbound-recv-buffer-size 16384"
+ }
+ }
+
+ if (service.isVpnService) {
+ cmd += "--vpn"
+ }
 
  if (route != Acl.ALL) {
  cmd += "--acl"

core/src/main/java/com/github/shadowsocks/database/Profile.kt

@@ -70,6 +70,7 @@ data class Profile(
  var individual: String = "",
  var plugin: String? = null,
  var udpFallback: Long? = null,
+ var optimizeBuffers: Boolean = true,
 
  // managed fields
  var subscription: SubscriptionStatus = SubscriptionStatus.UserConfigured,
@@ -355,6 +356,7 @@ data class Profile(
  DataStore.individual = individual
  DataStore.plugin = plugin ?: ""
  DataStore.udpFallback = udpFallback
+ DataStore.optimizeBuffers = optimizeBuffers
  DataStore.privateStore.remove(Key.dirty)
  }
 
@@ -378,5 +380,6 @@ data class Profile(
  individual = DataStore.individual
  plugin = DataStore.plugin
  udpFallback = DataStore.udpFallback
+ optimizeBuffers = DataStore.optimizeBuffers
  }
 }

core/src/main/java/com/github/shadowsocks/preference/DataStore.kt

@@ -104,6 +104,9 @@ object DataStore : OnPreferenceDataStoreChangeListener {
  var udpFallback: Long?
  get() = privateStore.getLong(Key.udpFallback)
  set(value) = privateStore.putLong(Key.udpFallback, value)
+ var optimizeBuffers: Boolean
+ get() = privateStore.getBoolean(Key.optimizeBuffers) ?: true
+ set(value) = privateStore.putBoolean(Key.optimizeBuffers, value)
  var dirty: Boolean
  get() = privateStore.getBoolean(Key.dirty) ?: false
  set(value) = privateStore.putBoolean(Key.dirty, value)

core/src/main/java/com/github/shadowsocks/utils/Constants.kt

@@ -61,6 +61,7 @@ object Key {
  const val plugin = "plugin"
  const val pluginConfigure = "plugin.configure"
  const val udpFallback = "udpFallback"
+ const val optimizeBuffers = "optimizeBuffers";
 
  const val dirty = "profileDirty"
 

core/src/main/res/values-ar/strings.xml

@@ -34,4 +34,6 @@
  <string name="remote_port">"المنفذ"</string>
  <string name="sitekey">"كلمة المرور"</string>
  <string name="enc_method">"طريقة التشفير"</string>
+ <string name="optimize_buffers">حسِن مخازن الذاكرة ل TCP</string>
+ <string name="optimize_buffers_summary">يعالج مشكلة نفاذ الوقت اثناء الرفع نتيجة تضخم مخازن الذاكرة</string>
 </resources>

core/src/main/res/values-de/strings.xml

@@ -39,6 +39,7 @@ Empfangen: \t%4$s\t↓\t%2$s"</string>
  <string name="enc_method">"Verschlüsselungsmethode"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">TCP-Puffer optimieren</string>
  <string name="ipv6">"IPv6-Route"</string>
  <string name="ipv6_summary">"Leite IPv6-Traffic zu Remote um"</string>
  <string name="route_entry_gfwlist">"GFW-Liste"</string>
@@ -49,6 +50,7 @@ Empfangen: \t%4$s\t↓\t%2$s"</string>
  <string name="bypass_apps_summary">"Aktiviere um ausgewählte Apps zu umgehen"</string>
  <string name="auto_connect">"Automatisch verbinden"</string>
  <string name="auto_connect_summary">"Starte Shadowsocks bei Systemstart/nach App-Update automatisch, falls es zuvor aktiv war"</string>
+ <string name="optimize_buffers_summary">Upload-Zeitüberschreitung (Bufferbloat) beheben</string>
  <string name="tcp_fastopen_summary">"Umschalten benötigt eventuell ROOT-Zugriff"</string>
  <string name="tcp_fastopen_summary_unsupported">"Nicht unterstützte Kernel-Version: %s &lt; 3.7.1"</string>
  <string name="udp_dns">"Sende DNS über UDP"</string>

core/src/main/res/values-es/strings.xml

@@ -40,6 +40,7 @@ Recibido: \t%4$s\t↓\t%2$s"</string>
  <string name="enc_method">"Método de Cifrado"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">Optimizar buffers TCP</string>
  <string name="ipv6">"Ruta IPv6"</string>
  <string name="ipv6_summary">"Redireccionar tráfico IPv6 a ruta"</string>
  <string name="route_list">"Ruta"</string>
@@ -54,6 +55,7 @@ Recibido: \t%4$s\t↓\t%2$s"</string>
 
  <!-- Fuzzy -->
  <string name="auto_connect_summary">"Activar Shadowsocks al iniciar"</string>
+ <string name="optimize_buffers_summary">Corregir el error de tiempo de espera de carga debido a bufferbloat</string>
  <string name="tcp_fastopen_summary_unsupported">"Versión del Núcleo sin soporte: %s &lt; 3.7.1"</string>
  <string name="udp_dns">"Enviar DNS sobre UDP"</string>
 

core/src/main/res/values-fa/strings.xml

@@ -41,6 +41,7 @@
  <string name="enc_method">"روش رمزگذاری"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">بهینه‌سازی بافرهای TCP</string>
  <string name="ipv6">"مسیر IPv6"</string>
  <string name="ipv6_summary">"ترافیک IPv6 را به سرور هدایت کن"</string>
  <string name="route_list">"مسیر"</string>
@@ -52,6 +53,7 @@
  <string name="bypass_apps_summary">"این گزینه را فعال کنید تا اپلیکیشن‌های انتخاب شده از VPN استفاده نکنند"</string>
  <string name="auto_connect">"وصل‌شدن اتوماتیک"</string>
  <string name="auto_connect_summary">"فعال‌شدن شدوساکس لحظه روشن‌شدن گوشی بروزرسانی شود اگر از قبل درحال اجرا بوده است"</string>
+ <string name="optimize_buffers_summary">رفع مشکل تایم اوت آپلود به دلیل بافرهای بزرگ</string>
  <string name="tcp_fastopen_summary">"تغییر وضعیت ممکن است به مجوز ROOT نیاز داشته باشد"</string>
  <string name="tcp_fastopen_summary_unsupported">"نسخه هسته پشتیبانی نشده: %s &lt;3.7.1"</string>
  <string name="udp_dns">"ارسال DNS از طریق UDP"</string>

core/src/main/res/values-fr/strings.xml

@@ -40,6 +40,7 @@ Reçu : \t\t\t%4$s\t↓\t%2$s"</string>
  <string name="enc_method">"Méthode d'Encryption"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">Optimiser les tampons TCP</string>
  <string name="ipv6">"Route IPv6"</string>
  <string name="ipv6_summary">"Rediriger le trafic IPv6 vers le serveur distant"</string>
  <string name="route_list">"Route"</string>
@@ -57,6 +58,7 @@ Reçu : \t\t\t%4$s\t↓\t%2$s"</string>
  <string name="auto_connect_summary">"Activer Shadowsocks au démarrage"</string>
 
  <!-- Fuzzy -->
+ <string name="optimize_buffers_summary">Résoudre le problème de délai d\'envoi lié au bufferbloat</string>
  <string name="tcp_fastopen_summary">"Activer nécessite la permission ROOT"</string>
  <string name="tcp_fastopen_summary_unsupported">"Version du noyau non supportée : %s &lt;3.7.1"</string>
 

core/src/main/res/values-ja/strings.xml

@@ -42,6 +42,7 @@
  <string name="enc_method">"暗号化方式"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">TCP バッファを最適化</string>
  <string name="ipv6">"IPv6 プロキシ"</string>
  <string name="ipv6_summary">"リモートサーバーに IPv6 パケットを転送"</string>
  <string name="route_list">"プロキシ方式"</string>
@@ -59,6 +60,7 @@
  <string name="auto_connect_summary">"システム起動時にバックグラウンドで本サービスを開始"</string>
 
  <!-- Fuzzy -->
+ <string name="optimize_buffers_summary">バッファブロートによるアップロード遅延を解消する</string>
  <string name="tcp_fastopen_summary">"使用するには ROOT 権限が必要"</string>
  <string name="tcp_fastopen_summary_unsupported">"ご利用のカーネルバージョンはサポートしておりません：%s &lt; 3.7.1"</string>
 

core/src/main/res/values-ko/strings.xml

@@ -39,6 +39,7 @@
  <string name="enc_method">"암호화 방법"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">TCP 버퍼 최적화</string>
  <string name="ipv6">"IPv6 라우팅"</string>
  <string name="ipv6_summary">"IPv6 트래픽도 원격으로 리다이렉트 합니다"</string>
  <string name="route_list">"라우팅 대상"</string>
@@ -58,6 +59,7 @@
  <string name="auto_connect_summary">"장치가 켜질 때 Shadowsocks를 자동으로 활성화합니다"</string>
 
  <!-- Fuzzy -->
+ <string name="optimize_buffers_summary">업로드 버퍼 크기 초과로 인한 시간 초과 해결</string>
  <string name="tcp_fastopen_summary">"루트 권한이 필요합니다"</string>
  <string name="tcp_fastopen_summary_unsupported">"지원하지 않는 버전의 커널입니다: %s &lt; 3.7.1"</string>
 

core/src/main/res/values-ru/strings.xml

@@ -40,6 +40,7 @@
  <string name="enc_method">"Метод шифрования"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">Оптимизировать буферы TCP</string>
  <string name="ipv6">"Маршрутизация IPv6"</string>
  <string name="ipv6_summary">"Перенаправлять трафик IPv6 на удалённый сервер"</string>
  <string name="route_list">"Маршрут"</string>
@@ -52,6 +53,7 @@
  <string name="bypass_apps_summary">"Включите эту функцию для работы выбранных приложений в обход прокси"</string>
  <string name="auto_connect">"Автоподключение"</string>
  <string name="auto_connect_summary">"Запускать Shadowsocks при включении/после обновления приложения, если оно было запущено до этого"</string>
+ <string name="optimize_buffers_summary">Устранить таймаут загрузки из-за переполнения буфера</string>
  <string name="tcp_fastopen_summary">"Переключение может запрашивать Root (права суперпользователя)"</string>
  <string name="tcp_fastopen_summary_unsupported">"Неподдерживаемая версия ядра: %s &lt; 3.7.1"</string>
  <string name="udp_dns">"Посылать DNS-запросы через UDP"</string>

core/src/main/res/values-tr/strings.xml

@@ -37,6 +37,7 @@
  <string name="remote_port">"Uzaktan Port"</string>
  <string name="sitekey">"Şifre"</string>
  <string name="enc_method">"Şifreleme Methodu"</string>
+ <string name="optimize_buffers">TCP Arabelleklerini Optimize Edin</string>
  <string name="ipv6_summary">"IPv6 trafiğini remote'a yönlendir"</string>
  <string name="route_list">"Rota"</string>
  <string name="route_entry_gfwlist">"GFW Listesi"</string>
@@ -53,6 +54,7 @@
  <string name="auto_connect_summary">"Shadowsocks'ı cihazı başlatırken aç"</string>
 
  <!-- Fuzzy -->
+ <string name="optimize_buffers_summary">Aşırı boyutlu arabelleklerden kaynaklanan yükleme zaman aşımını düzeltin.</string>
  <string name="tcp_fastopen_summary">"Açıp kapamak için ROOT yetkisi gerekiyor"</string>
  <string name="tcp_fastopen_summary_unsupported">"Desteklenmeyen kernel sürümü: %s &lt; 3.7.1"</string>
 

core/src/main/res/values-uk/strings.xml

@@ -80,6 +80,7 @@
  <string name="profile_default">"Використовувати поточний профіль"</string>
 
  <!-- status -->
+ <string name="optimize_buffers_summary">Виправити таймаут завантаження через завеликі буфери</string>
  <string name="sent">"Надіслано:"</string>
  <string name="received">"Отримано:"</string>
 
@@ -92,6 +93,7 @@
  <string name="custom_rules">"Власні правила"</string>
  <string name="action_add_rule">"Додати правило…"</string>
  <string name="edit_rule">"Редагувати правило"</string>
+ <string name="optimize_buffers">Оптимізувати буфери TCP</string>
  <string name="route_entry_all">"Всі"</string>
  <string name="route_entry_bypass_lan">"Оминати локальні мережі"</string>
  <string name="route_entry_bypass_chn">"Оминати Китай"</string>

core/src/main/res/values-zh-rCN/strings.xml

@@ -40,6 +40,7 @@
  <string name="enc_method">"加密方式"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">优化 TCP 缓冲区</string>
  <string name="ipv6">"IPv6 路由"</string>
  <string name="ipv6_summary">"转发 IPv6 流量到远程服务器"</string>
  <string name="route_list">"路由"</string>
@@ -51,6 +52,7 @@
  <string name="bypass_apps_summary">"绕过选择的应用"</string>
  <string name="auto_connect">"自动连接"</string>
  <string name="auto_connect_summary">"系统启动或应用更新后自动恢复运行"</string>
+ <string name="optimize_buffers_summary">解决因缓冲区过大导致的上传超时问题</string>
  <string name="tcp_fastopen_summary">"切换可能需要 ROOT 权限"</string>
  <string name="tcp_fastopen_summary_unsupported">"不支持的内核版本: %s &lt; 3.7.1"</string>
  <string name="udp_dns">"使用 UDP DNS"</string>

core/src/main/res/values-zh-rTW/strings.xml

@@ -41,6 +41,7 @@
  <string name="enc_method">"加密方法"</string>
 
  <!-- feature category -->
+ <string name="optimize_buffers">最佳化 TCP 緩衝區</string>
  <string name="ipv6">"IPv6 路由"</string>
  <string name="ipv6_summary">"向遠端重新導向 IPv6 流量"</string>
  <string name="route_list">"路由"</string>
@@ -58,6 +59,7 @@
  <string name="auto_connect_summary">"在裝置啟動時啟用 Shadowsocks"</string>
 
  <!-- Fuzzy -->
+ <string name="optimize_buffers_summary">修正因緩衝區過大導致上傳逾時的問題</string>
  <string name="tcp_fastopen_summary">"切換需要 ROOT 權限"</string>
  <string name="tcp_fastopen_summary_unsupported">"不支援的核心版本：%s &lt; 3.7.1"</string>
 

core/src/main/res/values/strings.xml

@@ -32,6 +32,8 @@
  <string name="remote_port">Remote Port</string>
  <string name="sitekey">Password</string>
  <string name="enc_method">Encrypt Method</string>
+ <string name="optimize_buffers">Optimize TCP Buffers</string>
+ <string name="optimize_buffers_summary">Fix upload timeout (bufferbloat)</string>
 
  <!-- feature category -->
  <string name="ipv6">IPv6 Route</string>

mobile/src/main/java/com/github/shadowsocks/ProfileConfigFragment.kt

@@ -79,6 +79,7 @@ class ProfileConfigFragment : PreferenceFragmentCompat(),
  private lateinit var pluginConfiguration: PluginConfiguration
  private lateinit var receiver: BroadcastReceiver
  private lateinit var udpFallback: Preference
+ private lateinit var optimizeBuffers: SwitchPreference
 
  private fun makeDirt() {
  DataStore.dirty = true
@@ -115,6 +116,8 @@ class ProfileConfigFragment : PreferenceFragmentCompat(),
  pluginConfiguration = PluginConfiguration(DataStore.plugin)
  initPlugins()
  udpFallback = findPreference(Key.udpFallback)!!
+ optimizeBuffers = findPreference(Key.optimizeBuffers)!!
+ optimizeBuffers.isChecked = DataStore.optimizeBuffers
  DataStore.privateStore.registerChangeListener(this)
 
  val profile = ProfileManager.getProfile(profileId) ?: Profile()

mobile/src/main/res/xml/pref_profile.xml

@@ -65,8 +65,11 @@
  app:key="remoteDns"
  app:icon="@drawable/ic_action_dns"
  app:title="@string/remote_dns"
- app:useSimpleSummaryProvider="true"/>
-
+ app:useSimpleSummaryProvider="true" />
+ <SwitchPreference
+ app:key="optimizeBuffers"
+ app:title="@string/optimize_buffers"
+ app:summary="@string/optimize_buffers_summary" />
  </PreferenceCategory>
 
  <PreferenceCategory