Add `connection_speed` to advanced settings

Now we follow libtorrent current default value 30.
Closes #6973.

Also bump WebAPI version.

src/base/bittorrent/session.cpp

@@ -352,6 +352,7 @@ Session::Session(QObject *parent)
     , m_sendBufferWatermark(BITTORRENT_SESSION_KEY("SendBufferWatermark"), 500)
     , m_sendBufferLowWatermark(BITTORRENT_SESSION_KEY("SendBufferLowWatermark"), 10)
     , m_sendBufferWatermarkFactor(BITTORRENT_SESSION_KEY("SendBufferWatermarkFactor"), 50)
+    , m_connectionSpeed(BITTORRENT_SESSION_KEY("ConnectionSpeed"), 30)
     , m_socketBacklogSize(BITTORRENT_SESSION_KEY("SocketBacklogSize"), 30)
     , m_isAnonymousModeEnabled(BITTORRENT_SESSION_KEY("AnonymousModeEnabled"), false)
     , m_isQueueingEnabled(BITTORRENT_SESSION_KEY("QueueingSystemEnabled"), false)
@@ -1070,7 +1071,6 @@ void Session::initializeNativeSession()
     // Speed up exit
     pack.set_int(lt::settings_pack::auto_scrape_interval, 1200); // 20 minutes
     pack.set_int(lt::settings_pack::auto_scrape_min_interval, 900); // 15 minutes
-    pack.set_int(lt::settings_pack::connection_speed, 20); // default is 10
     // libtorrent 1.1 enables UPnP & NAT-PMP by default
     // turn them off before `lt::session` ctor to avoid split second effects
     pack.set_bool(lt::settings_pack::enable_upnp, false);
@@ -1187,6 +1187,8 @@ void Session::initMetrics()
 
 void Session::loadLTSettings(lt::settings_pack &settingsPack)
 {
+    settingsPack.set_int(lt::settings_pack::connection_speed, connectionSpeed());
+
     // from libtorrent doc:
     // It will not take affect until the listen_interfaces settings is updated
     settingsPack.set_int(lt::settings_pack::listen_queue_size, socketBacklogSize());
@@ -3324,6 +3326,19 @@ void Session::setSendBufferWatermarkFactor(const int value)
     configureDeferred();
 }
 
+int Session::connectionSpeed() const
+{
+    return m_connectionSpeed;
+}
+
+void Session::setConnectionSpeed(const int value)
+{
+    if (value == m_connectionSpeed) return;
+
+    m_connectionSpeed = value;
+    configureDeferred();
+}
+
 int Session::socketBacklogSize() const
 {
     return m_socketBacklogSize;

src/base/bittorrent/session.h

@@ -372,6 +372,8 @@ namespace BitTorrent
         void setSendBufferLowWatermark(int value);
         int sendBufferWatermarkFactor() const;
         void setSendBufferWatermarkFactor(int value);
+        int connectionSpeed() const;
+        void setConnectionSpeed(int value);
         int socketBacklogSize() const;
         void setSocketBacklogSize(int value);
         bool isAnonymousModeEnabled() const;
@@ -672,6 +674,7 @@ namespace BitTorrent
         CachedSettingValue<int> m_sendBufferWatermark;
         CachedSettingValue<int> m_sendBufferLowWatermark;
         CachedSettingValue<int> m_sendBufferWatermarkFactor;
+        CachedSettingValue<int> m_connectionSpeed;
         CachedSettingValue<int> m_socketBacklogSize;
         CachedSettingValue<bool> m_isAnonymousModeEnabled;
         CachedSettingValue<bool> m_isQueueingEnabled;

src/gui/advancedsettings.cpp

@@ -115,6 +115,7 @@ namespace
         SEND_BUF_LOW_WATERMARK,
         SEND_BUF_WATERMARK_FACTOR,
         // networking & ports
+        CONNECTION_SPEED,
         SOCKET_BACKLOG_SIZE,
         OUTGOING_PORT_MIN,
         OUTGOING_PORT_MAX,
@@ -223,6 +224,8 @@ void AdvancedSettings::saveAdvancedSettings()
     session->setSendBufferWatermark(m_spinBoxSendBufferWatermark.value());
     session->setSendBufferLowWatermark(m_spinBoxSendBufferLowWatermark.value());
     session->setSendBufferWatermarkFactor(m_spinBoxSendBufferWatermarkFactor.value());
+    // Outgoing connections per second
+    session->setConnectionSpeed(m_spinBoxConnectionSpeed.value());
     // Socket listen backlog size
     session->setSocketBacklogSize(m_spinBoxSocketBacklogSize.value());
     // Save resume data interval
@@ -525,6 +528,12 @@ void AdvancedSettings::loadAdvancedSettings()
     m_spinBoxSendBufferWatermarkFactor.setValue(session->sendBufferWatermarkFactor());
     addRow(SEND_BUF_WATERMARK_FACTOR, (tr("Send buffer watermark factor") + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#send_buffer_watermark_factor", "(?)"))
             , &m_spinBoxSendBufferWatermarkFactor);
+    // Outgoing connections per second
+    m_spinBoxConnectionSpeed.setMinimum(0);
+    m_spinBoxConnectionSpeed.setMaximum(std::numeric_limits<int>::max());
+    m_spinBoxConnectionSpeed.setValue(session->connectionSpeed());
+    addRow(CONNECTION_SPEED, (tr("Outgoing connections per second") + ' ' + makeLink("https://www.libtorrent.org/reference-Settings.html#connection_speed", "(?)"))
+            , &m_spinBoxConnectionSpeed);
     // Socket listen backlog size
     m_spinBoxSocketBacklogSize.setMinimum(1);
     m_spinBoxSocketBacklogSize.setMaximum(std::numeric_limits<int>::max());

src/gui/advancedsettings.h

@@ -63,7 +63,7 @@ private:
     QSpinBox m_spinBoxAsyncIOThreads, m_spinBoxFilePoolSize, m_spinBoxCheckingMemUsage,
              m_spinBoxSaveResumeDataInterval, m_spinBoxOutgoingPortsMin, m_spinBoxOutgoingPortsMax, m_spinBoxUPnPLeaseDuration, m_spinBoxPeerToS,
              m_spinBoxListRefresh, m_spinBoxTrackerPort, m_spinBoxSendBufferWatermark, m_spinBoxSendBufferLowWatermark,
-             m_spinBoxSendBufferWatermarkFactor, m_spinBoxSocketBacklogSize, m_spinBoxMaxConcurrentHTTPAnnounces, m_spinBoxStopTrackerTimeout,
+             m_spinBoxSendBufferWatermarkFactor, m_spinBoxConnectionSpeed, m_spinBoxSocketBacklogSize, m_spinBoxMaxConcurrentHTTPAnnounces, m_spinBoxStopTrackerTimeout,
              m_spinBoxSavePathHistoryLength, m_spinBoxPeerTurnover, m_spinBoxPeerTurnoverCutoff, m_spinBoxPeerTurnoverInterval;
     QCheckBox m_checkBoxOsCache, m_checkBoxRecheckCompleted, m_checkBoxResolveCountries, m_checkBoxResolveHosts,
               m_checkBoxProgramNotifications, m_checkBoxTorrentAddedNotifications, m_checkBoxTrackerFavicon, m_checkBoxTrackerStatus,

src/webui/api/appcontroller.cpp

@@ -302,6 +302,8 @@ void AppController::preferencesAction()
     data["send_buffer_watermark"] = session->sendBufferWatermark();
     data["send_buffer_low_watermark"] = session->sendBufferLowWatermark();
     data["send_buffer_watermark_factor"] = session->sendBufferWatermarkFactor();
+    // Outgoing connections per second
+    data["connection_speed"] = session->connectionSpeed();
     // Socket listen backlog size
     data["socket_backlog_size"] = session->socketBacklogSize();
     // Outgoing ports
@@ -754,6 +756,9 @@ void AppController::setPreferencesAction()
         session->setSendBufferLowWatermark(it.value().toInt());
     if (hasKey("send_buffer_watermark_factor"))
         session->setSendBufferWatermarkFactor(it.value().toInt());
+    // Outgoing connections per second
+    if (hasKey("connection_speed"))
+        session->setConnectionSpeed(it.value().toInt());
     // Socket listen backlog size
     if (hasKey("socket_backlog_size"))
         session->setSocketBacklogSize(it.value().toInt());

src/webui/webapplication.cpp

@@ -62,7 +62,8 @@
 #include "api/torrentscontroller.h"
 #include "api/transfercontroller.h"
 
-constexpr int MAX_ALLOWED_FILESIZE = 10 * 1024 * 1024;
+const int MAX_ALLOWED_FILESIZE = 10 * 1024 * 1024;
+const char C_SID[] = "SID"; // name of session id cookie
 
 const QString PATH_PREFIX_ICONS {QStringLiteral("/icons/")};
 const QString WWW_FOLDER {QStringLiteral(":/www")};

src/webui/webapplication.h

@@ -43,13 +43,11 @@
 #include "base/utils/net.h"
 #include "base/utils/version.h"
 
-constexpr Utils::Version<int, 3, 2> API_VERSION {2, 8, 2};
+inline const Utils::Version<int, 3, 2> API_VERSION {2, 8, 3};
 
 class APIController;
 class WebApplication;
 
-constexpr char C_SID[] = "SID"; // name of session id cookie
-
 class WebSession final : public ISession
 {
 public:

src/webui/www/private/views/preferences.html

@@ -1047,6 +1047,14 @@
                     <input type="text" id="sendBufferWatermarkFactor" style="width: 15em;" />&nbsp;&nbsp;%
                 </td>
             </tr>
+            <tr>
+                <td>
+                    <label for="connectionSpeed">QBT_TR(Outgoing connections per second:)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#connection_speed" target="_blank">(?)</a></label>
+                </td>
+                <td>
+                    <input type="text" id="connectionSpeed" style="width: 15em;" />
+                </td>
+            </tr>
             <tr>
                 <td>
                     <label for="socketBacklogSize">QBT_TR(Socket backlog size:)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#listen_queue_size" target="_blank">(?)</a></label>
@@ -1896,6 +1904,7 @@
                         $('sendBufferWatermark').setProperty('value', pref.send_buffer_watermark);
                         $('sendBufferLowWatermark').setProperty('value', pref.send_buffer_low_watermark);
                         $('sendBufferWatermarkFactor').setProperty('value', pref.send_buffer_watermark_factor);
+                        $('connectionSpeed').setProperty('value', pref.connection_speed);
                         $('socketBacklogSize').setProperty('value', pref.socket_backlog_size);
                         $('outgoingPortsMin').setProperty('value', pref.outgoing_ports_min);
                         $('outgoingPortsMax').setProperty('value', pref.outgoing_ports_max);
@@ -2285,6 +2294,7 @@
             settings.set('send_buffer_watermark', $('sendBufferWatermark').getProperty('value'));
             settings.set('send_buffer_low_watermark', $('sendBufferLowWatermark').getProperty('value'));
             settings.set('send_buffer_watermark_factor', $('sendBufferWatermarkFactor').getProperty('value'));
+            settings.set('connection_speed', $('connectionSpeed').getProperty('value'));
             settings.set('socket_backlog_size', $('socketBacklogSize').getProperty('value'));
             settings.set('outgoing_ports_min', $('outgoingPortsMin').getProperty('value'));
             settings.set('outgoing_ports_max', $('outgoingPortsMax').getProperty('value'));