more clean up for feature selecting a random port when starts up

src/preferences/options_imp.cpp

@@ -138,7 +138,7 @@ options_imp::options_imp(QWidget *parent):
   // General tab
   connect(comboI18n, SIGNAL(currentIndexChanged(int)), this, SLOT(enableApplyButton()));
   connect(checkAltRowColors, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
-  //add checkbox for random port
+  // add checkbox for random port
   connect(checkRandomPort, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
   connect(checkShowSystray, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
   connect(checkCloseToSystray, SIGNAL(toggled(bool)), this, SLOT(enableApplyButton()));
@@ -369,7 +369,7 @@ void options_imp::saveOptions() {
   // General preferences
   pref.setLocale(locale);
   pref.setAlternatingRowColors(checkAltRowColors->isChecked());
-  //set random port
+  // set random port
   pref.setRandomPort(checkRandomPort->isChecked());
   pref.setSystrayIntegration(systrayIntegration());
   pref.setTrayIconStyle(TrayIcon::Style(comboTrayIcon->currentIndex()));
@@ -544,7 +544,7 @@ void options_imp::loadOptions() {
   const Preferences pref;
   setLocale(pref.getLocale());
   checkAltRowColors->setChecked(pref.useAlternatingRowColors());
-  //get random port
+  // get random port
   checkRandomPort->setChecked(pref.useRandomPort());
   checkShowSystray->setChecked(pref.systrayIntegration());
   checkShowSplash->setChecked(!pref.isSlashScreenDisabled());
@@ -798,7 +798,6 @@ void options_imp::on_randomButton_clicked() {
   spinPort->setValue(rand() % 64512 + 1024);
 }
 
-
 int options_imp::getEncryptionSetting() const {
   return comboEncryption->currentIndex();
 }

src/preferences/preferences.h

@@ -78,7 +78,6 @@ public:
   }
 
   // General options  
-  
   QString getLocale() const {
     return value(QString::fromUtf8("Preferences/General/Locale"), "en_GB").toString();
   }
@@ -128,11 +127,11 @@ public:
   }
 
   bool useRandomPort() const {
-    return value(QString::fromUtf8("Preferences/General/RandomPort"), true).toBool();
+    return value(QString::fromUtf8("Preferences/General/UseRandomPort"), false).toBool();
   }
 
   void setRandomPort(bool b) {
-    setValue("Preferences/General/RandomPort", b);
+    setValue("Preferences/General/UseRandomPort", b);
   }
 
   bool systrayIntegration() const {
@@ -1050,6 +1049,7 @@ public:
     setValue(QString::fromUtf8("Preferences/Connection/MaxHalfOpenConnec"), value);
   }
 
+
   void setNetworkInterface(const QString& iface) {
     setValue(QString::fromUtf8("Preferences/Connection/Interface"), iface);
   }

src/qtlibtorrent/qbtsession.cpp

@@ -113,9 +113,9 @@ QBtSession::QBtSession()
   , geoipDBLoaded(false), resolve_countries(false)
   #endif
   , m_tracker(0), m_shutdownAct(NO_SHUTDOWN),
-    m_upnp(0), m_natpmp(0), m_dynDNSUpdater(0)
+    m_upnp(0), m_natpmp(0), m_dynDNSUpdater(0),
+    m_randomPortEnabled(false)
 {
-  setRandomPortset(false);
   BigRatioTimer = new QTimer(this);
   BigRatioTimer->setInterval(10000);
   connect(BigRatioTimer, SIGNAL(timeout()), SLOT(processBigRatios()));
@@ -282,27 +282,24 @@ void QBtSession::setQueueingEnabled(bool enable) {
   }
 }
 
-void QBtSession::setRandomPortset(bool set) {
-        randomPortSet = set;
-}
-
 // Set BT session configuration
 void QBtSession::configureSession() {
   qDebug("Configuring session");
-  //removed the constant modifier for Preferences
   Preferences pref;
   const unsigned short old_listenPort = getListenPort();
   const unsigned short new_listenPort = pref.getSessionPort();
-  if(pref.useRandomPort() && !isRandomPortset()) { // to check if the randomPort checkbox is selected
-    setRandomPortset(true);
+  if (pref.useRandomPort()) { // to check if the randomPort checkbox is selected
+      if (!m_randomPortEnabled) {
+          m_randomPortEnabled = true;
           srand(time(0));
           const unsigned short randomPort = rand() % USHRT_MAX + 1025;
           setListeningPort(randomPort);
           addConsoleMessage(tr("qBittorrent is bound to port: TCP/%1", "e.g: qBittorrent is bound to port: 6881").arg(QString::number(getListenPort())));
           pref.setSessionPort(randomPort);
+      }
   } else {
       // * Ports binding
-
+      m_randomPortEnabled = false;
       if (old_listenPort != new_listenPort) {
         qDebug("Session port changes in program preferences: %d -> %d", old_listenPort, new_listenPort);
         setListeningPort(new_listenPort);

src/qtlibtorrent/qbtsession.h

@@ -107,8 +107,6 @@ public:
   inline bool isLSDEnabled() const { return LSDEnabled; }
   inline bool isPexEnabled() const { return PeXEnabled; }
   inline bool isQueueingEnabled() const { return queueingEnabled; }
-  bool isRandomPortset() { return randomPortSet; };
-  void setRandomPortset(bool set);
 
 public slots:
   QTorrentHandle addTorrent(QString path, bool fromScanDir = false, QString from_url = QString(), bool resumed = false);
@@ -259,7 +257,7 @@ private:
   bool m_torrentExportEnabled;
   bool m_finishedTorrentExportEnabled;
   bool appendqBExtension;
-  bool randomPortSet;
+  bool m_randomPortEnabled;
   QString defaultSavePath;
   QString defaultTempPath;
   // IP filtering