Don't trigger reconnection when being transferred

gradle.properties

@@ -14,7 +14,7 @@ fabric_version=0.100.1+1.21
 # Mod Properties
 mod_id=autoreconnect
 mod_name=AutoReconnect
-mod_version=1.21-2.3.0
+mod_version=1.21-2.4.0
 maven_group=autoreconnect
 archives_base_name=autoreconnect
 

src/main/java/autoreconnect/AutoReconnect.java

@@ -1,6 +1,7 @@
 package autoreconnect;
 
 import autoreconnect.config.AutoReconnectConfig;
+import autoreconnect.mixin.ClientCommonPacketListenerImplExt;
 import autoreconnect.reconnect.ReconnectStrategy;
 import autoreconnect.reconnect.SingleplayerReconnectStrategy;
 import com.mojang.logging.LogUtils;
@@ -14,6 +15,7 @@
 import net.minecraft.client.gui.screens.TitleScreen;
 import net.minecraft.client.gui.screens.multiplayer.JoinMultiplayerScreen;
 import net.minecraft.client.gui.screens.worldselection.SelectWorldScreen;
+import net.minecraft.client.multiplayer.ClientCommonPacketListenerImpl;
 import net.minecraft.client.player.LocalPlayer;
 import net.minecraft.network.chat.contents.TranslatableContents;
 import net.minecraft.world.entity.player.Player;
@@ -71,6 +73,12 @@ public void reconnect() {
     }
 
     public void startCountdown(final IntConsumer callback) {
+        // don't reconnect when being transferred
+        var packetListener = Minecraft.getInstance().getConnection().getConnection().getPacketListener();
+        if (packetListener instanceof ClientCommonPacketListenerImpl) {
+            if (((ClientCommonPacketListenerImplExt) packetListener).autoreconnect$isTransferring()) return;
+        }
+
         // if (countdown.get() != null) return; // should not happen
         if (reconnectStrategy == null) {
             // TODO fix issue appropriately, logging error for now

src/main/java/autoreconnect/mixin/ClientCommonPacketListenerImplExt.java

@@ -0,0 +1,12 @@
+package autoreconnect.mixin;
+
+import net.minecraft.client.multiplayer.ClientCommonPacketListenerImpl;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(ClientCommonPacketListenerImpl.class)
+public interface ClientCommonPacketListenerImplExt {
+
+    @Accessor("isTransferring")
+    public boolean autoreconnect$isTransferring();
+}

src/main/resources/autoreconnect.mixins.json

@@ -5,10 +5,11 @@
   "compatibilityLevel": "JAVA_17",
   "mixins": [],
   "client": [
+    "ClientCommonPacketListenerImplExt",
     "ClientPacketListenerMixin",
     "ConnectScreenMixin",
-    "DisconnectedScreenMixin",
     "DisconnectedRealmsScreenMixin",
+    "DisconnectedScreenMixin",
     "MinecraftMixin",
     "RealmsConnectMixin"
   ],