Implemented kick-reset again with config option

build.gradle.kts

@@ -5,7 +5,7 @@ plugins {
 }
 
 group = "org.adde0109"
-version = "1.5.2-beta"
+version = "1.5.3-beta"
 
 repositories {
     mavenCentral()

src/main/java/org/adde0109/ambassador/Ambassador.java

@@ -19,6 +19,7 @@ import java.util.Map;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.proxy.VelocityServer;
 import com.velocitypowered.proxy.connection.MinecraftConnection;
+import com.velocitypowered.proxy.connection.client.ConnectedPlayer;
 import com.velocitypowered.proxy.network.ConnectionManager;
 import com.velocitypowered.proxy.protocol.StateRegistry;
 import com.velocitypowered.proxy.protocol.packet.DisconnectPacket;
@@ -28,6 +29,8 @@ import com.velocitypowered.proxy.protocol.packet.brigadier.ArgumentPropertySeria
 import io.netty.buffer.ByteBuf;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelInitializer;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.minimessage.MiniMessage;
 import org.adde0109.ambassador.velocity.VelocityBackendChannelInitializer;
 import org.adde0109.ambassador.velocity.VelocityServerChannelInitializer;
 import org.adde0109.ambassador.velocity.VelocityEventHandler;
@@ -43,7 +46,7 @@ import java.util.concurrent.TimeUnit;
 import static com.velocitypowered.api.network.ProtocolVersion.MINECRAFT_1_19;
 import static com.velocitypowered.proxy.protocol.packet.brigadier.ArgumentIdentifier.mapSet;
 
-@Plugin(id = "ambassador", name = "Ambassador", version = "1.5.2-beta", authors = {"adde0109"})
+@Plugin(id = "ambassador", name = "Ambassador", version = "1.5.3-beta", authors = {"adde0109"})
 public class Ambassador {
 
   //Don't forget to update checkCompatibleVersion() when changing this value
@@ -153,6 +156,16 @@ public class Ambassador {
     return TEMPORARY_FORCED;
   }
 
+  public void reconnectSwitchPlayer(ConnectedPlayer player) {
+    TEMPORARY_FORCED.put(player.getUsername(), player.getConnectionInFlight().getServer(),
+            config.getServerSwitchCancellationTime(), TimeUnit.SECONDS);
+
+    MiniMessage mm = MiniMessage.miniMessage();
+    Component parsed = mm.deserialize(config.getKickReconnectMessageString());
+
+    player.disconnect(parsed);
+  }
+
   private void initMetrics() {
     Metrics metrics = metricsFactory.make(this, 15655);
   }

src/main/java/org/adde0109/ambassador/AmbassadorConfig.java

@@ -19,7 +19,6 @@ public class AmbassadorConfig {
 
   @Expose
   private boolean silenceWarnings = false;
-
   @Expose
   private boolean bypassRegistryCheck = false;
   @Expose
@@ -28,11 +27,20 @@ public class AmbassadorConfig {
   @Expose
   private boolean debugMode = false;
 
-  private AmbassadorConfig(boolean silenceWarnings, boolean bypassRegistryCheck, boolean bypassModCheck, boolean debugMode) {
+  @Expose
+  private boolean enableKickReset = false;
+
+  @Expose
+  private String kickReconnectMessageString = "<red>Please reconnect.</red>";
+
+  private AmbassadorConfig(boolean silenceWarnings, boolean bypassRegistryCheck, boolean bypassModCheck,
+                           boolean debugMode, boolean enableKickReset, String kickReconnectMessageString) {
     this.silenceWarnings = silenceWarnings;
     this.bypassRegistryCheck = bypassRegistryCheck;
     this.bypassModCheck = bypassModCheck;
     this.debugMode = debugMode;
+    this.enableKickReset = enableKickReset;
+    this.kickReconnectMessageString = kickReconnectMessageString;
   };
 
   public static AmbassadorConfig read(Path path) throws IOException {
@@ -59,6 +67,9 @@ public class AmbassadorConfig {
 
     boolean silenceWarnings = config.getOrElse("silence-warnings", false);
 
+    String kickReconnectMessageString = config.getOrElse("disconnect-reset-message",
+            "<red>Please reconnect.</red>");
+
     //Upgrade config
     if (configVersion <= 1.2) {
       Files.delete(path);
@@ -70,6 +81,7 @@ public class AmbassadorConfig {
               .build();
       config.load();
       config.set("silence-warnings", silenceWarnings);
+      config.set("reconnect-message", kickReconnectMessageString);
     }
 
     int serverSwitchCancellationTime = config.getOrElse("serverRedirectTimeout", 30);
@@ -80,7 +92,13 @@ public class AmbassadorConfig {
 
     boolean debugMode = config.getOrElse("debug-mode", false);
 
-    return new AmbassadorConfig(bypassRegistryCheck, bypassModCheck, silenceWarnings, debugMode);
+    boolean enableKickReset = config.getOrElse("enable-kick-reset", false);
+
+    kickReconnectMessageString = config.getOrElse("reconnect-message",
+            "<red>Please reconnect.</red>");
+
+    return new AmbassadorConfig(bypassRegistryCheck, bypassModCheck, silenceWarnings,
+            debugMode, enableKickReset, kickReconnectMessageString);
   }
 
   public int getServerSwitchCancellationTime() {
@@ -102,4 +120,12 @@ public class AmbassadorConfig {
   public boolean isDebugMode() {
     return debugMode;
   }
+
+  public boolean isEnableKickReset() {
+    return enableKickReset;
+  }
+
+  public String getKickReconnectMessageString() {
+    return kickReconnectMessageString;
+  }
 }

src/main/java/org/adde0109/ambassador/forge/VelocityForgeBackendConnectionPhase.java

@@ -72,6 +72,10 @@ public enum VelocityForgeBackendConnectionPhase implements BackendConnectionPhas
     VelocityForgeClientConnectionPhase clientPhase = (VelocityForgeClientConnectionPhase) player.getPhase();
 
 
+    if (!player.isActive()) {
+      return;
+    }
+
     if (!clientPhase.consideredComplete()) {
       //Initial Forge
       if (message instanceof ModListPacket modListPacket) {
@@ -92,10 +96,16 @@ public enum VelocityForgeBackendConnectionPhase implements BackendConnectionPhas
 
       if (clientPhase.forgeHandshake.getModListReplyPacket() == null) {
         //We have nothing to respond with during this handshake. Unable to proceed.
-        Ambassador.getInstance().logger.error("Unable for {} to switch servers. " +
-                "Vanilla({}) -> Forge({}) switch without reset is not yet supported!", player.getGameProfile().getName(),
-                player.getConnectedServer().getServerInfo().getName(), server.getServerInfo().getName());
-        server.disconnect();
+        if (Ambassador.getInstance().config.isEnableKickReset()) {
+          //Kick-reset
+          Ambassador.getInstance().reconnectSwitchPlayer(player);
+        } else {
+          Ambassador.getInstance().logger.error("Unable for {} to switch servers. Vanilla({}) -> Forge({}) switch " +
+                          "without client side mod or kick-reset enabled is not yet supported!",
+                  player.getGameProfile().getName(), player.getConnectedServer().getServerInfo().getName(),
+                  server.getServerInfo().getName());
+          server.disconnect();
+        }
         return;
       }
 
@@ -124,6 +134,9 @@ public enum VelocityForgeBackendConnectionPhase implements BackendConnectionPhas
           if (Ambassador.getInstance().config.isBypassRegistryCheck() ||
                   clientPhase.forgeHandshake.isCompatible(handshake)) {
             server.ensureConnected().write(clientPhase.forgeHandshake.getModListReplyPacket());
+          } else if (Ambassador.getInstance().config.isEnableKickReset()) {
+            //Kick-reset
+            Ambassador.getInstance().reconnectSwitchPlayer(player);
           } else {
             Ambassador.getInstance().logger.error("Unable to switch due to the registries of " +
                     server.getServer().getServerInfo().getName() + " being different from the registries of " +

src/main/java/org/adde0109/ambassador/forge/VelocityForgeClientConnectionPhase.java

@@ -25,6 +25,7 @@ import org.adde0109.ambassador.velocity.client.OutboundSuccessHolder;
 import org.adde0109.ambassador.velocity.client.ClientPacketQueue;
 
 import java.nio.charset.StandardCharsets;
+import java.util.concurrent.TimeUnit;
 
 public enum VelocityForgeClientConnectionPhase implements ClientConnectionPhase {
 
@@ -255,6 +256,8 @@ public enum VelocityForgeClientConnectionPhase implements ClientConnectionPhase
         buf.writeBytes((player.getVirtualHost().get().getHostName() + ":"
                 + player.getVirtualHost().get().getPort()).getBytes(StandardCharsets.UTF_8));
         player.getConnection().write(new PluginMessagePacket("srvredirect:red", buf));
+
+        Ambassador.getInstance().reconnectSwitchPlayer(player);
       }
     };
 

src/main/resources/default-ambassador.toml

@@ -1,5 +1,5 @@
 # Do not change this
-config-version = "2.0"
+config-version = "2.1"
 
 # How much time the player has to reconnect before canceling the server switch. (In seconds)
 # Only for players with ServerRedirect mod installed. Set to -1 to disable ServerRedirect mod support.
@@ -17,5 +17,13 @@ bypass-registry-checks = false
 # Warning: This is a safety measure for when bypassRegistryCheck is true. Setting this to also true can cause crashes.
 bypass-mod-checks = false
 
-#Only for debug/troubleshooting
-debug-mode = false
+# Only for debug/troubleshooting
+debug-mode = false
+
+# Make the player reconnect when server switching as a last resort if
+# the player can't reset or switch servers without resetting.
+enable-kick-reset = false
+
+# Message to display when player gets kicked due to server switching according to enable-kick-reset.
+# This input is deserialzied as MiniMessage and support formating according to the MiniMessage format.
+reconnect-message = "<red>Please reconnect.</red>"