NOISSUE Use minecraft logic for parsing adresses

api/logic/minecraft/MinecraftInstance.cpp

@@ -115,7 +115,6 @@ MinecraftInstance::MinecraftInstance(SettingsObjectPtr globalSettings, SettingsO
     // Join server on launch, this does not have a global override
     m_settings->registerSetting("JoinServerOnLaunch", false);
     m_settings->registerSetting("JoinServerOnLaunchAddress", "");
-    m_settings->registerSetting("JoinServerOnLaunchPort", 25565);
 
     // DEPRECATED: Read what versions the user configuration thinks should be used
     m_settings->registerSetting({"IntendedVersion", "MinecraftVersion"}, "");
@@ -859,17 +858,59 @@ shared_qobject_ptr<LaunchTask> MinecraftInstance::createLaunchTask(AuthSessionPt
 
     if (m_settings->get("JoinServerOnLaunch").toBool())
     {
-        quint16 port = m_settings->get("JoinServerOnLaunchPort").toInt();
-        QString address = m_settings->get("JoinServerOnLaunchAddress").toString();
+        QString fullAddress = m_settings->get("JoinServerOnLaunchAddress").toString();
+        QStringList split = fullAddress.split(":");
 
-        serverToJoin->port = port;
-        serverToJoin->address = address;
+        // The logic below replicates the exact logic minecraft uses for parsing server addresses.
+        // While the conversion is not lossless and eats errors, it ensures the same behavior
+        // within Minecraft and MultiMC when entering server addresses.
+        if (fullAddress.startsWith("["))
+        {
+            int bracket = fullAddress.indexOf("]");
+            if (bracket > 0)
+            {
+                QString ipv6 = fullAddress.mid(1, bracket - 1);
+                QString port = fullAddress.mid(bracket + 1).trimmed();
 
-        if(port == 25565)
+                if (port.startsWith(":") && !ipv6.isEmpty())
+                {
+                    port = port.mid(1);
+                    split = QStringList({ ipv6, port });
+                }
+                else
+                {
+                    split = QStringList({ipv6});
+                }
+            }
+        }
+
+        if (split.size() > 2)
+        {
+            split = QStringList({fullAddress});
+        }
+
+        QString realAddress = split[0];
+
+        quint16 realPort = 25565;
+        if (split.size() > 1)
+        {
+            bool ok;
+            realPort = split[1].toUInt(&ok);
+
+            if (!ok)
+            {
+                realPort = 25565;
+            }
+        }
+
+        serverToJoin->port = realPort;
+        serverToJoin->address = realAddress;
+
+        if(realPort == 25565)
         {
             // Resolve server address to join on launch
             auto *step = new LookupServerAddress(pptr);
-            step->setLookupAddress(address);
+            step->setLookupAddress(realAddress);
             step->setOutputAddressPtr(serverToJoin);
             process->appendStep(step);
         }

application/pages/instance/InstanceSettingsPage.cpp

@@ -198,12 +198,10 @@ void InstanceSettingsPage::applySettings()
     if (joinServerOnLaunch)
     {
         m_settings->set("JoinServerOnLaunchAddress", ui->serverJoinAddress->text());
-        m_settings->set("JoinServerOnLaunchPort", ui->serverJoinPort->value());
     }
     else
     {
         m_settings->reset("JoinServerOnLaunchAddress");
-        m_settings->reset("JoinServerOnLaunchPort");
     }
 }
 
@@ -274,7 +272,6 @@ void InstanceSettingsPage::loadSettings()
 
     ui->serverJoinGroupBox->setChecked(m_settings->get("JoinServerOnLaunch").toBool());
     ui->serverJoinAddress->setText(m_settings->get("JoinServerOnLaunchAddress").toString());
-    ui->serverJoinPort->setValue(m_settings->get("JoinServerOnLaunchPort").toInt());
 }
 
 void InstanceSettingsPage::on_javaDetectBtn_clicked()

application/pages/instance/InstanceSettingsPage.ui

@@ -39,7 +39,7 @@
       <enum>QTabWidget::Rounded</enum>
      </property>
      <property name="currentIndex">
-      <number>0</number>
+      <number>4</number>
      </property>
      <widget class="QWidget" name="minecraftTab">
       <attribute name="title">
@@ -483,23 +483,6 @@
             <item row="0" column="1">
              <widget class="QLineEdit" name="serverJoinAddress"/>
             </item>
-            <item row="1" column="0">
-             <widget class="QLabel" name="serverJoinPortLabel">
-              <property name="text">
-               <string>Server port:</string>
-              </property>
-             </widget>
-            </item>
-            <item row="1" column="1">
-             <widget class="QSpinBox" name="serverJoinPort">
-              <property name="maximum">
-               <number>65535</number>
-              </property>
-              <property name="value">
-               <number>25565</number>
-              </property>
-             </widget>
-            </item>
            </layout>
           </item>
          </layout>