Use enums for settings

src/base/bittorrent/session.cpp

@@ -301,7 +301,8 @@ Session::Session(QObject *parent)
     , m_maxUploadsPerTorrent(BITTORRENT_SESSION_KEY("MaxUploadsPerTorrent"), -1, lowerLimited(0, -1))
     , m_isUTPEnabled(BITTORRENT_SESSION_KEY("uTPEnabled"), true)
     , m_isUTPRateLimited(BITTORRENT_SESSION_KEY("uTPRateLimited"), true)
-    , m_utpMixedMode(BITTORRENT_SESSION_KEY("uTPMixedMode"), m_isUTPEnabled, clampValue(0, 1))
+    , m_utpMixedMode(BITTORRENT_SESSION_KEY("uTPMixedMode"), MixedModeAlgorithm::Proportional
+        , clampValue(MixedModeAlgorithm::TCP, MixedModeAlgorithm::Proportional))
     , m_multiConnectionsPerIpEnabled(BITTORRENT_SESSION_KEY("MultiConnectionsPerIp"), false)
     , m_isAddTrackersEnabled(BITTORRENT_SESSION_KEY("AddTrackersEnabled"), false)
     , m_additionalTrackers(BITTORRENT_SESSION_KEY("AdditionalTrackers"))
@@ -330,8 +331,10 @@ Session::Session(QObject *parent)
     , m_encryption(BITTORRENT_SESSION_KEY("Encryption"), 0)
     , m_isForceProxyEnabled(BITTORRENT_SESSION_KEY("ForceProxy"), true)
     , m_isProxyPeerConnectionsEnabled(BITTORRENT_SESSION_KEY("ProxyPeerConnections"), false)
-    , m_chokingAlgorithm(BITTORRENT_SESSION_KEY("ChokingAlgorithm"), 0, clampValue(0, 2))
+    , m_chokingAlgorithm(BITTORRENT_SESSION_KEY("ChokingAlgorithm"), ChokingAlgorithm::FixedSlots
-    , m_seedChokingAlgorithm(BITTORRENT_SESSION_KEY("SeedChokingAlgorithm"), 1, clampValue(0, 2))
+        , clampValue(ChokingAlgorithm::FixedSlots, ChokingAlgorithm::RateBased))
+    , m_seedChokingAlgorithm(BITTORRENT_SESSION_KEY("SeedChokingAlgorithm"), SeedChokingAlgorithm::FastestUpload
+        , clampValue(SeedChokingAlgorithm::RoundRobin, SeedChokingAlgorithm::AntiLeech))
     , m_storedCategories(BITTORRENT_SESSION_KEY("Categories"))
     , m_storedTags(BITTORRENT_SESSION_KEY("Tags"))
     , m_maxRatioAction(BITTORRENT_SESSION_KEY("MaxRatioAction"), Pause)
@@ -1324,7 +1327,15 @@ void Session::configure(libtorrent::settings_pack &settingsPack)
     // uTP
     settingsPack.set_bool(libt::settings_pack::enable_incoming_utp, isUTPEnabled());
     settingsPack.set_bool(libt::settings_pack::enable_outgoing_utp, isUTPEnabled());
-    settingsPack.set_int(libt::settings_pack::mixed_mode_algorithm, utpMixedMode());
+    switch (utpMixedMode()) {
+    case MixedModeAlgorithm::TCP:
+    default:
+        settingsPack.set_int(libt::settings_pack::mixed_mode_algorithm, libt::settings_pack::prefer_tcp);
+        break;
+    case MixedModeAlgorithm::Proportional:
+        settingsPack.set_int(libt::settings_pack::mixed_mode_algorithm, libt::settings_pack::peer_proportional);
+        break;
+    }
 
     settingsPack.set_bool(libt::settings_pack::allow_multiple_connections_per_ip, multiConnectionsPerIpEnabled());
 
@@ -1336,15 +1347,27 @@ void Session::configure(libtorrent::settings_pack &settingsPack)
     settingsPack.set_bool(libt::settings_pack::enable_lsd, isLSDEnabled());
 
     switch (chokingAlgorithm()) {
-    case 0:
+    case ChokingAlgorithm::FixedSlots:
     default:
         settingsPack.set_int(libt::settings_pack::choking_algorithm, libt::settings_pack::fixed_slots_choker);
         break;
-    case 1:
+    case ChokingAlgorithm::RateBased:
         settingsPack.set_int(libt::settings_pack::choking_algorithm, libt::settings_pack::rate_based_choker);
         break;
     }
-    settingsPack.set_int(libt::settings_pack::seed_choking_algorithm, seedChokingAlgorithm());
+
+    switch (seedChokingAlgorithm()) {
+    case SeedChokingAlgorithm::RoundRobin:
+        settingsPack.set_int(libt::settings_pack::seed_choking_algorithm, libt::settings_pack::round_robin);
+        break;
+    case SeedChokingAlgorithm::FastestUpload:
+    default:
+        settingsPack.set_int(libt::settings_pack::seed_choking_algorithm, libt::settings_pack::fastest_upload);
+        break;
+    case SeedChokingAlgorithm::AntiLeech:
+        settingsPack.set_int(libt::settings_pack::seed_choking_algorithm, libt::settings_pack::anti_leech);
+        break;
+    }
 }
 
 void Session::configurePeerClasses()
@@ -1562,7 +1585,15 @@ void Session::configure(libtorrent::session_settings &sessionSettings)
     sessionSettings.enable_outgoing_utp = isUTPEnabled();
     // uTP rate limiting
     sessionSettings.rate_limit_utp = isUTPRateLimited();
-    sessionSettings.mixed_mode_algorithm = utpMixedMode();
+    switch (utpMixedMode()) {
+    case MixedModeAlgorithm::TCP:
+    default:
+        sessionSettings.mixed_mode_algorithm = libt::session_settings::prefer_tcp;
+        break;
+    case MixedModeAlgorithm::Proportional:
+        sessionSettings.mixed_mode_algorithm = libt::session_settings::peer_proportional;
+        break;
+    }
 
     sessionSettings.allow_multiple_connections_per_ip = multiConnectionsPerIpEnabled();
 
@@ -1587,15 +1618,27 @@ void Session::configure(libtorrent::session_settings &sessionSettings)
         m_nativeSession->stop_lsd();
 
     switch (chokingAlgorithm()) {
-    case 0:
+    case ChokingAlgorithm::FixedSlots:
     default:
         sessionSettings.choking_algorithm = libt::session_settings::fixed_slots_choker;
         break;
-    case 1:
+    case ChokingAlgorithm::RateBased:
         sessionSettings.choking_algorithm = libt::session_settings::rate_based_choker;
         break;
     }
-    sessionSettings.seed_choking_algorithm = seedChokingAlgorithm();
+
+    switch (seedChokingAlgorithm()) {
+    case SeedChokingAlgorithm::RoundRobin:
+        sessionSettings.seed_choking_algorithm = libt::session_settings::round_robin;
+        break;
+    case SeedChokingAlgorithm::FastestUpload:
+    default:
+        sessionSettings.seed_choking_algorithm = libt::session_settings::fastest_upload;
+        break;
+    case SeedChokingAlgorithm::AntiLeech:
+        sessionSettings.seed_choking_algorithm = libt::session_settings::anti_leech;
+        break;
+    }
 }
 #endif
 
@@ -2697,12 +2740,12 @@ void Session::setProxyPeerConnectionsEnabled(bool enabled)
     }
 }
 
-int Session::chokingAlgorithm() const
+ChokingAlgorithm Session::chokingAlgorithm() const
 {
     return m_chokingAlgorithm;
 }
 
-void Session::setChokingAlgorithm(int mode)
+void Session::setChokingAlgorithm(ChokingAlgorithm mode)
 {
     if (mode == m_chokingAlgorithm) return;
 
@@ -2710,12 +2753,12 @@ void Session::setChokingAlgorithm(int mode)
     configureDeferred();
 }
 
-int Session::seedChokingAlgorithm() const
+SeedChokingAlgorithm Session::seedChokingAlgorithm() const
 {
     return m_seedChokingAlgorithm;
 }
 
-void Session::setSeedChokingAlgorithm(int mode)
+void Session::setSeedChokingAlgorithm(SeedChokingAlgorithm mode)
 {
     if (mode == m_seedChokingAlgorithm) return;
 
@@ -3220,12 +3263,12 @@ void Session::setUTPRateLimited(bool limited)
     }
 }
 
-int Session::utpMixedMode() const
+MixedModeAlgorithm Session::utpMixedMode() const
 {
     return m_utpMixedMode;
 }
 
-void Session::setUtpMixedMode(int mode)
+void Session::setUtpMixedMode(MixedModeAlgorithm mode)
 {
     if (mode == m_utpMixedMode) return;
 

src/base/bittorrent/session.h

@@ -151,6 +151,38 @@ namespace BitTorrent
         uint nbErrored = 0;
     };
 
+    class SessionSettingsEnums
+    {
+        Q_GADGET
+
+    public:
+        // TODO: remove `SessionSettingsEnums` wrapper when we can use `Q_ENUM_NS` directly (QT >= 5.8 only)
+        enum class ChokingAlgorithm : int
+        {
+            FixedSlots = 0,
+            RateBased = 1
+        };
+        Q_ENUM(ChokingAlgorithm)
+
+        enum class SeedChokingAlgorithm : int
+        {
+            RoundRobin = 0,
+            FastestUpload = 1,
+            AntiLeech = 2
+        };
+        Q_ENUM(SeedChokingAlgorithm)
+
+        enum class MixedModeAlgorithm : int
+        {
+            TCP = 0,
+            Proportional = 1
+        };
+        Q_ENUM(MixedModeAlgorithm)
+    };
+    using ChokingAlgorithm = SessionSettingsEnums::ChokingAlgorithm;
+    using SeedChokingAlgorithm = SessionSettingsEnums::SeedChokingAlgorithm;
+    using MixedModeAlgorithm = SessionSettingsEnums::MixedModeAlgorithm;
+
 #if LIBTORRENT_VERSION_NUM >= 10100
     struct SessionMetricIndices
     {
@@ -317,10 +349,10 @@ namespace BitTorrent
         void setForceProxyEnabled(bool enabled);
         bool isProxyPeerConnectionsEnabled() const;
         void setProxyPeerConnectionsEnabled(bool enabled);
-        int chokingAlgorithm() const;
+        ChokingAlgorithm chokingAlgorithm() const;
-        void setChokingAlgorithm(int mode);
+        void setChokingAlgorithm(ChokingAlgorithm mode);
-        int seedChokingAlgorithm() const;
+        SeedChokingAlgorithm seedChokingAlgorithm() const;
-        void setSeedChokingAlgorithm(int mode);
+        void setSeedChokingAlgorithm(SeedChokingAlgorithm mode);
         bool isAddTrackersEnabled() const;
         void setAddTrackersEnabled(bool enabled);
         QString additionalTrackers() const;
@@ -385,8 +417,8 @@ namespace BitTorrent
         void setUTPEnabled(bool enabled);
         bool isUTPRateLimited() const;
         void setUTPRateLimited(bool limited);
-        int utpMixedMode() const;
+        MixedModeAlgorithm utpMixedMode() const;
-        void setUtpMixedMode(int mode);
+        void setUtpMixedMode(MixedModeAlgorithm mode);
         bool multiConnectionsPerIpEnabled() const;
         void setMultiConnectionsPerIpEnabled(bool enabled);
         bool isTrackerFilteringEnabled() const;
@@ -617,7 +649,7 @@ namespace BitTorrent
         CachedSettingValue<int> m_maxUploadsPerTorrent;
         CachedSettingValue<bool> m_isUTPEnabled;
         CachedSettingValue<bool> m_isUTPRateLimited;
-        CachedSettingValue<int> m_utpMixedMode;
+        CachedSettingValue<MixedModeAlgorithm> m_utpMixedMode;
         CachedSettingValue<bool> m_multiConnectionsPerIpEnabled;
         CachedSettingValue<bool> m_isAddTrackersEnabled;
         CachedSettingValue<QString> m_additionalTrackers;
@@ -646,8 +678,8 @@ namespace BitTorrent
         CachedSettingValue<int> m_encryption;
         CachedSettingValue<bool> m_isForceProxyEnabled;
         CachedSettingValue<bool> m_isProxyPeerConnectionsEnabled;
-        CachedSettingValue<int> m_chokingAlgorithm;
+        CachedSettingValue<ChokingAlgorithm> m_chokingAlgorithm;
-        CachedSettingValue<int> m_seedChokingAlgorithm;
+        CachedSettingValue<SeedChokingAlgorithm> m_seedChokingAlgorithm;
         CachedSettingValue<QVariantMap> m_storedCategories;
         CachedSettingValue<QStringList> m_storedTags;
         CachedSettingValue<int> m_maxRatioAction;

src/gui/advancedsettings.cpp

@@ -150,7 +150,7 @@ void AdvancedSettings::saveAdvancedSettings()
     session->setOutgoingPortsMin(outgoing_ports_min.value());
     session->setOutgoingPortsMax(outgoing_ports_max.value());
     // uTP-TCP mixed mode
-    session->setUtpMixedMode(comboUtpMixedMode.currentIndex());
+    session->setUtpMixedMode(static_cast<BitTorrent::MixedModeAlgorithm>(comboUtpMixedMode.currentIndex()));
     // multiple connections per IP
     session->setMultiConnectionsPerIpEnabled(cbMultiConnectionsPerIp.isChecked());
     // Recheck torrents on completion
@@ -200,9 +200,9 @@ void AdvancedSettings::saveAdvancedSettings()
     session->setTrackerEnabled(cb_tracker_status.isChecked());
     pref->setTrackerPort(spin_tracker_port.value());
     // Choking algorithm
-    session->setChokingAlgorithm(comboChokingAlgorithm.currentIndex());
+    session->setChokingAlgorithm(static_cast<BitTorrent::ChokingAlgorithm>(comboChokingAlgorithm.currentIndex()));
     // Seed choking algorithm
-    session->setSeedChokingAlgorithm(comboSeedChokingAlgorithm.currentIndex());
+    session->setSeedChokingAlgorithm(static_cast<BitTorrent::SeedChokingAlgorithm>(comboSeedChokingAlgorithm.currentIndex()));
 
 #if defined(Q_OS_WIN) || defined(Q_OS_MAC)
     pref->setUpdateCheckEnabled(cb_update_check.isChecked());
@@ -344,7 +344,7 @@ void AdvancedSettings::loadAdvancedSettings()
     addRow(OUTGOING_PORT_MAX, tr("Outgoing ports (Max) [0: Disabled]"), &outgoing_ports_max);
     // uTP-TCP mixed mode
     comboUtpMixedMode.addItems({"Prefer TCP", "Peer proportional (throttles TCP)"});
-    comboUtpMixedMode.setCurrentIndex(session->utpMixedMode());
+    comboUtpMixedMode.setCurrentIndex(static_cast<int>(session->utpMixedMode()));
     addRow(UTP_MIX_MODE, tr("uTP-TCP mixed mode algorithm"), &comboUtpMixedMode);
     // multiple connections per IP
     cbMultiConnectionsPerIp.setChecked(session->multiConnectionsPerIpEnabled());
@@ -429,11 +429,11 @@ void AdvancedSettings::loadAdvancedSettings()
     addRow(TRACKER_PORT, tr("Embedded tracker port"), &spin_tracker_port);
     // Choking algorithm
     comboChokingAlgorithm.addItems({"Fixed slots", "Upload rate based"});
-    comboChokingAlgorithm.setCurrentIndex(session->chokingAlgorithm());
+    comboChokingAlgorithm.setCurrentIndex(static_cast<int>(session->chokingAlgorithm()));
     addRow(CHOKING_ALGORITHM, tr("Upload slots behavior"), &comboChokingAlgorithm);
     // Seed choking algorithm
     comboSeedChokingAlgorithm.addItems({"Round-robin", "Fastest upload", "Anti-leech"});
-    comboSeedChokingAlgorithm.setCurrentIndex(session->seedChokingAlgorithm());
+    comboSeedChokingAlgorithm.setCurrentIndex(static_cast<int>(session->seedChokingAlgorithm()));
     addRow(SEED_CHOKING_ALGORITHM, tr("Upload choking algorithm"), &comboSeedChokingAlgorithm);
 
 #if defined(Q_OS_WIN) || defined(Q_OS_MAC)