Disable VV packet limiter on 1.17.1+ Paper

api/src/main/java/com/viaversion/viaversion/api/ViaAPI.java

@@ -64,7 +64,7 @@ public interface ViaAPI<T> {
      * @return API version incremented with meaningful API changes
      */
     default int apiVersion() {
-        return 5;
+        return 6;
     }
 
     /**

api/src/main/java/com/viaversion/viaversion/api/connection/UserConnection.java

@@ -297,6 +297,20 @@ public interface UserConnection {
      */
     boolean shouldApplyBlockProtocol();
 
+    /**
+     * Returns whether the packet limiter applies to this user.
+     *
+     * @return whether the packet limiter applies to this user
+     */
+    boolean isPacketLimiterEnabled();
+
+    /**
+     * Sets the status of the packet limiter.
+     *
+     * @param packetLimiterEnabled whether the packet limiter should be enabled
+     */
+    void setPacketLimiterEnabled(boolean packetLimiterEnabled);
+
     /**
      * Returns a newly generated uuid that will let a packet be passed through without
      * transformig its contents if used together with {@link PacketWrapper#PASSTHROUGH_ID}.

bukkit/src/main/java/com/viaversion/viaversion/bukkit/handlers/BukkitChannelInitializer.java

@@ -19,6 +19,7 @@ package com.viaversion.viaversion.bukkit.handlers;
 
 import com.viaversion.viaversion.api.connection.UserConnection;
 import com.viaversion.viaversion.bukkit.classgenerator.ClassGenerator;
+import com.viaversion.viaversion.bukkit.platform.PaperViaInjector;
 import com.viaversion.viaversion.classgenerator.generated.HandlerConstructor;
 import com.viaversion.viaversion.connection.UserConnectionImpl;
 import com.viaversion.viaversion.protocol.ProtocolPipelineImpl;
@@ -59,6 +60,10 @@ public class BukkitChannelInitializer extends ChannelInitializer<Channel> {
         UserConnection connection = new UserConnectionImpl(channel);
         new ProtocolPipelineImpl(connection);
 
+        if (PaperViaInjector.PAPER_PACKET_LIMITER) {
+            connection.setPacketLimiterEnabled(false);
+        }
+
         // Add our transformers
         HandlerConstructor constructor = ClassGenerator.getConstructor();
         MessageToByteEncoder encoder = constructor.newEncodeHandler(connection, (MessageToByteEncoder) channel.pipeline().get("encoder"));

bukkit/src/main/java/com/viaversion/viaversion/bukkit/platform/PaperViaInjector.java

@@ -27,6 +27,7 @@ import java.lang.reflect.Proxy;
 public final class PaperViaInjector {
     public static final boolean PAPER_INJECTION_METHOD = hasPaperInjectionMethod();
     public static final boolean PAPER_PROTOCOL_METHOD = hasServerProtocolMethod();
+    public static final boolean PAPER_PACKET_LIMITER = hasPacketLimiter();
 
     private PaperViaInjector() {
     }
@@ -64,8 +65,16 @@ public final class PaperViaInjector {
     }
 
     private static boolean hasPaperInjectionMethod() {
+        return hasClass("io.papermc.paper.network.ChannelInitializeListener");
+    }
+
+    private static boolean hasPacketLimiter() {
+        return hasClass("com.destroystokyo.paper.PaperConfig$PacketLimit") || hasClass("io.papermc.paper.PaperConfig$PacketLimit");
+    }
+
+    private static boolean hasClass(final String className) {
         try {
-            Class.forName("io.papermc.paper.network.ChannelInitializeListener");
+            Class.forName(className);
             return true;
         } catch (ReflectiveOperationException e) {
             return false;

common/src/main/java/com/viaversion/viaversion/connection/UserConnectionImpl.java

@@ -63,6 +63,7 @@ public class UserConnectionImpl implements UserConnection {
     private final boolean clientSide;
     private boolean active = true;
     private boolean pendingDisconnect;
+    private boolean packetLimiterEnabled = true;
 
     /**
      * Creates an UserConnection. When it's a client-side connection, some method behaviors are modified.
@@ -253,8 +254,9 @@ public class UserConnectionImpl implements UserConnection {
 
     @Override
     public boolean checkServerboundPacket() {
-        // Ignore if pending disconnect
+        if (pendingDisconnect || !packetLimiterEnabled) {
-        if (pendingDisconnect) return false;
+            return false;
+        }
         // Increment received + Check PPS
         return !packetTracker.incrementReceived() || !packetTracker.exceedsMaxPPS();
     }
@@ -357,6 +359,16 @@ public class UserConnectionImpl implements UserConnection {
         return !clientSide; // Don't apply protocol blocking on client-side
     }
 
+    @Override
+    public boolean isPacketLimiterEnabled() {
+        return packetLimiterEnabled;
+    }
+
+    @Override
+    public void setPacketLimiterEnabled(boolean packetLimiterEnabled) {
+        this.packetLimiterEnabled = packetLimiterEnabled;
+    }
+
     @Override
     public UUID generatePassthroughToken() {
         UUID token = UUID.randomUUID();

common/src/main/resources/assets/viaversion/config.yml

@@ -72,7 +72,7 @@ velocity-servers: {}
 #----------------------------------------------------------#
 #                  GLOBAL PACKET LIMITER                   #
 #----------------------------------------------------------#
-#
+# THIS FEATURE IS DISABLED ON 1.17.1+ PAPER SERVERS, SINCE IT HAS A BETTER PACKET-LIMITER INBUILT
 #
 # Packets Per Second (PPS) limiter (Use -1 on max-pps and tracking-period to disable)
 # Clients by default send around 20-90 packets per second.