[Qt] Adding network port to GUI settings, fixes #7039

Adds Network port input box to the Network tab in the Options dialog.
-port takes priority over the GUI setting.
If left blank, it will default to the default port

src/qt/forms/optionsdialog.ui

@@ -315,6 +315,55 @@
        <string>&amp;Network</string>
       </attribute>
       <layout class="QVBoxLayout" name="verticalLayout_Network">
+       <item>
+        <layout class="QHBoxLayout" name="horizontalLayout_1_Network">
+         <item>
+          <widget class="QLabel" name="networkPortLabel">
+           <property name="text">
+            <string>Network &amp;port</string>
+           </property>
+           <property name="textFormat">
+            <enum>Qt::PlainText</enum>
+           </property>
+           <property name="buddy">
+            <cstring>networkPort</cstring>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLineEdit" name="networkPort">
+           <property name="minimumSize">
+            <size>
+             <width>55</width>
+             <height>0</height>
+            </size>
+           </property>
+           <property name="maximumSize">
+            <size>
+             <width>55</width>
+             <height>16777215</height>
+            </size>
+           </property>
+           <property name="toolTip">
+            <string>Network port (e.g. 8333)</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <spacer name="horizontalSpacer_1_Network">
+           <property name="orientation">
+            <enum>Qt::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+        </layout>
+       </item>
        <item>
         <widget class="QCheckBox" name="mapPortUpnp">
          <property name="toolTip">
@@ -356,7 +405,7 @@
         </widget>
        </item>
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_1_Network">
+        <layout class="QHBoxLayout" name="horizontalLayout_2_Network">
          <item>
           <widget class="QLabel" name="proxyIpLabel">
            <property name="text">
@@ -422,7 +471,7 @@
           </widget>
          </item>
          <item>
-          <spacer name="horizontalSpacer_1_Network">
+          <spacer name="horizontalSpacer_2_Network">
            <property name="orientation">
             <enum>Qt::Horizontal</enum>
            </property>
@@ -437,7 +486,7 @@
         </layout>
        </item>
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_2_Network">
+        <layout class="QHBoxLayout" name="horizontalLayout_3_Network">
          <item>
           <widget class="QLabel" name="proxyActiveNets">
            <property name="text">
@@ -518,7 +567,7 @@
           </widget>
          </item>
          <item>
-          <spacer name="horizontalSpacer_2_Network">
+          <spacer name="horizontalSpacer_3_Network">
            <property name="orientation">
             <enum>Qt::Horizontal</enum>
            </property>
@@ -543,7 +592,7 @@
         </widget>
        </item>
        <item>
-        <layout class="QHBoxLayout" name="horizontalLayout_3_Network">
+        <layout class="QHBoxLayout" name="horizontalLayout_4_Network">
          <item>
           <widget class="QLabel" name="proxyIpTorLabel">
            <property name="text">

src/qt/optionsdialog.cpp

@@ -105,6 +105,8 @@ OptionsDialog::OptionsDialog(QWidget* parent, bool enableWallet)
     ui->pruneSize->setEnabled(false);
     connect(ui->prune, &QPushButton::toggled, ui->pruneSize, &QWidget::setEnabled);
 
+    ui->networkPort->setValidator(new QIntValidator(1, 65535, this));
+
     /* Network elements init */
 #ifndef USE_UPNP
     ui->mapPortUpnp->setEnabled(false);
@@ -270,6 +272,7 @@ void OptionsDialog::setModel(OptionsModel *_model)
     /* Wallet */
     connect(ui->spendZeroConfChange, &QCheckBox::clicked, this, &OptionsDialog::showRestartWarning);
     /* Network */
+    connect(ui->networkPort, SIGNAL(textChanged(const QString &)), this, SLOT(showRestartWarning()));
     connect(ui->allowIncoming, &QCheckBox::clicked, this, &OptionsDialog::showRestartWarning);
     connect(ui->enableServer, &QCheckBox::clicked, this, &OptionsDialog::showRestartWarning);
     connect(ui->connectSocks, &QCheckBox::clicked, this, &OptionsDialog::showRestartWarning);
@@ -306,6 +309,7 @@ void OptionsDialog::setMapper()
     mapper->addMapping(ui->m_enable_psbt_controls, OptionsModel::EnablePSBTControls);
 
     /* Network */
+    mapper->addMapping(ui->networkPort, OptionsModel::NetworkPort);
     mapper->addMapping(ui->mapPortUpnp, OptionsModel::MapPortUPnP);
     mapper->addMapping(ui->mapPortNatpmp, OptionsModel::MapPortNatpmp);
     mapper->addMapping(ui->allowIncoming, OptionsModel::Listen);

src/qt/optionsmodel.cpp

@@ -10,6 +10,7 @@
 #include <qt/guiconstants.h>
 #include <qt/guiutil.h>
 
+#include <chainparams.h>
 #include <common/args.h>
 #include <interfaces/node.h>
 #include <mapport.h>
@@ -244,6 +245,12 @@ bool OptionsModel::Init(bilingual_str& error)
     m_sub_fee_from_amount = settings.value("SubFeeFromAmount", false).toBool();
 #endif
 
+    // Network
+    if (!settings.contains("nNetworkPort"))
+        settings.setValue("nNetworkPort", (quint16)Params().GetDefaultPort());
+    if (!gArgs.SoftSetArg("-port", settings.value("nNetworkPort").toString().toStdString()))
+        addOverriddenOption("-port");
+
     // Display
     if (settings.contains("FontForMoney")) {
         m_font_money = FontChoiceFromString(settings.value("FontForMoney").toString());
@@ -418,6 +425,8 @@ QVariant OptionsModel::getOption(OptionID option, const std::string& suffix) con
         return m_show_tray_icon;
     case MinimizeToTray:
         return fMinimizeToTray;
+    case NetworkPort:
+        return settings.value("nNetworkPort");
     case MapPortUPnP:
 #ifdef USE_UPNP
         return SettingToBool(setting(), DEFAULT_UPNP);
@@ -544,6 +553,18 @@ bool OptionsModel::setOption(OptionID option, const QVariant& value, const std::
         fMinimizeToTray = value.toBool();
         settings.setValue("fMinimizeToTray", fMinimizeToTray);
         break;
+    case NetworkPort:
+        if (settings.value("nNetworkPort") != value) {
+            // If the port input box is empty, set to default port
+            if (value.toString().isEmpty()) {
+                settings.setValue("nNetworkPort", (quint16)Params().GetDefaultPort());
+            }
+            else {
+                settings.setValue("nNetworkPort", (quint16)value.toInt());
+            }
+            setRestartRequired(true);
+        }
+        break;
     case MapPortUPnP: // core option - can be changed on-the-fly
         if (changed()) {
             update(value.toBool());

src/qt/optionsmodel.h

@@ -50,6 +50,7 @@ public:
         StartAtStartup,         // bool
         ShowTrayIcon,           // bool
         MinimizeToTray,         // bool
+        NetworkPort,            // int
         MapPortUPnP,            // bool
         MapPortNatpmp,          // bool
         MinimizeOnClose,        // bool