Update to Minecraft 26.3 (#3681)

* Update to Minecraft 26.3

- Bump the server dependency, latest version and plugin api-version to 26.3
- Add the configuration POST_EFFECTS packet and shift the following ids
- Add the CHANGE_DESTROY_DIRECTION player dig type
- Stop resolving the legacy particle enum on 1.13+, the 26.3 particle packet has an unrelated enum
- Read optional message signatures in getMessageSignatures
- Cache parameterized structure modifiers separately from the raw field type
- Add WrappedVecDelta and WrappedPositionPath for the new entity movement packets
- Update tests for the 26.3 server classes

* Change default class type from null to void.class

.gitattributes

@@ -1 +1,2 @@
 * text=auto eol=lf
+.github/workflows/*.lock.yml linguist-generated=true merge=ours

.github/CONTRIBUTING.md

@@ -1,38 +1,75 @@
-Contributing to ProtocolLib
-===========================
-This page will detail specific things that must be done if you intend to contribute to this project.
+# Contributing to ProtocolLib
 
-## Updating ProtocolLib to a New Protocol Version
-#### Before we get started:
-1. **When do we need to update the protocol version?**
-    _A Minecraft protocol version is a number for each specification of the Minecraft protocol.
-    This means it is incremented when there is a change to the [Protocol Specification](http://wiki.vg/Protocol),
-    but not necessarily for each Minecraft version update. If the latest Minecraft version contains a protocol change,
-    that means ProtocolLib needs to be updated._
-2. **When do we need to update other parts of ProtocolLib?**
-    _When the package version guard changes. The package version guard is the version string inserted
-    into the package identifier for CraftBukkit and net.minecraft.server (e.g. v1_9_R2). It is incremented
-    by Spigot if there is a major breaking change in the internal server code. This is to encourage plugins
-    that interact directly with CraftBukkit/nms code to update more specifically. However, since most of
-    ProtocolLib uses reflection, and the structure of packet classes is generally static, one will have
-    to go through the code and change imports from nms/CraftBukkit._
+ProtocolLib supports a wide range of Minecraft versions through reflection and compatibility wrappers. Changes to packet
+registration, reflection, or public wrappers can affect plugins on versions other than the one currently used for
+development, so keep changes focused and preserve existing behavior unless a break is unavoidable.
 
-#### Ready? Let's get started!
-1. Read the [Protocol Changes](http://wiki.vg/Protocol_History). Always make sure the list is both
-complete and correct. If you're unsure, don't hesitate to ask in #mcdevs (the people who maintain wiki.vg) on [libera.chat](http://libera.chat)
-or #spigot on [irc.spi.gt](http://irc.spi.gt) ([webchat](https://irc.spi.gt/iris/?channels=spigot)).
-2. Search for usages of the now-defunct NMS package guard and change them.
-3. The class `com.comphenix.protocol.PacketType` contains a list of all the packets. If any packets were added or removed
-(or had their ID changed), make sure to update this list. If a packet was removed
-in favor of usage of another packet, instead of removing it, move it to the bottom of the list
-in its section, add a deprecation warning to it, and redirect it to the packet that replaced it.
-4. `mvn` in the root directory to build the project.
-5. If tests fail in the maven build, go through the tests to make sure you removed references to any removed packets
-and changed the NMS version guards.
-6. Increment the package version in `com.comphenix.protocol.utility.Constants`.
-7. `com.comphenix.protocol.ProtocolLibrary` contains several constants that must be updated, including the Minecraft version
-and the release date.
-8. `com.comphenix.protocol.utility.MinecraftProtocolVersion` contains a map of all the protocol version integers.
-If the protocol version has been incremented, add a new line to the map.
-9. `mvn` in root directory again. If it builds successfully, test on the appropriate version of a Spigot server. If
-the build fails, debug!
+## Building ProtocolLib
+
+Use the Gradle wrapper from the repository root. The root project builds the platform-neutral library published to
+Maven. The `paper` module compiles and tests it against Paper's development bundle and produces the primary plugin,
+`build/libs/ProtocolLib.jar`. The `spigot` compatibility module produces `build/libs/ProtocolLib-Spigot.jar`.
+
+```shell
+./gradlew test
+./gradlew build shadowJar
+```
+
+`shadowJar` builds both plugin distributions with the required Byte Buddy classes included. Neither platform provider
+nor plugin descriptor is included in the Maven core artifact.
+
+ProtocolLib uses the Java 25 toolchain to compile against the current server, but production classes target Java 17 for
+compatibility with older supported servers.
+
+## Updating ProtocolLib for a Minecraft Release
+
+Start by reviewing the [Java Edition protocol](https://minecraft.wiki/w/Java_Edition_protocol) and the corresponding
+server classes. The server packet classes and codecs are authoritative when documentation and implementation differ.
+
+### 1. Update version metadata
+
+- Update `mcVersion` in `gradle.properties`.
+- Add the release to `MinecraftVersion` and update `MinecraftVersion.LATEST`.
+- Update `ProtocolLibrary.MAXIMUM_MINECRAFT_VERSION` and `ProtocolLibrary.MINECRAFT_LAST_RELEASE_DATE`.
+- Update `MinecraftProtocolVersion` if the release changed the protocol number.
+
+### 2. Reconcile packet types
+
+`PacketType` must contain a matching definition for every packet in the current server protocol registries. Compare the
+serverbound and clientbound packet classes and codecs against every protocol phase, including configuration.
+
+- Add new, renamed, or split packets and update their current IDs and aliases.
+- Do not remove an existing public `PacketType` constant. Move removed types to the deprecated section and document their
+  replacement when one exists.
+- Represent split packets as separate packet types instead of redirecting incompatible packet shapes.
+- Run the packet registry tests after changing packet definitions. A missing definition can prevent later packets in the
+  same protocol registry from being registered.
+
+### 3. Update reflection and wrappers
+
+- Inspect changed fields, constructors, records, nested classes, and stream codecs instead of relying only on class names.
+- Prefer structural or type-based reflection where names are unstable.
+- Treat the current server API shape as primary and use older supported shapes only as narrow compatibility fallbacks.
+- Put version checks at the narrowest compatibility boundary and leave the older path unchanged.
+- If an NMS concept was removed, report it as unsupported or absent rather than treating a different class as equivalent.
+- Preserve packet fields that are unrelated to the value being changed.
+- Keep converters symmetric and preserve wrapper cloning and equality semantics.
+- A custom `StructureModifier` must maintain the complete modifier contract, including safe reads and writes, field count,
+  metadata, introspection, defaults, and `withTarget()`.
+
+### 4. Add regression coverage
+
+- Initialize the test environment with `BukkitInitialization` when tests access CraftBukkit or NMS classes.
+- Exercise the actual packet structure supplied by the current Paper dependency.
+- Cover both sides of a version guard when feasible.
+- Re-enable previously disabled tests when the underlying incompatibility is fixed.
+- Run targeted tests while developing, followed by `./gradlew test`.
+- Before declaring a Minecraft release supported, build the shaded plugin and test it on the corresponding server.
+
+## Pull Request Expectations
+
+- Keep the change limited to the reported problem or release update.
+- Include regression tests for packet, reflection, converter, or wrapper behavior changes.
+- Preserve public API signatures and binary compatibility where possible.
+- Clearly document any unavoidable compatibility change.
+- Do not hide reflection failures with broad exception handling or silent fallbacks.

.github/workflows/build.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '21'
+          java-version: '25'
           cache: 'gradle'
 
       - name: Run gradle build lifecycle
@@ -27,4 +27,6 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: ProtocolLib
-          path: build/libs/ProtocolLib.jar
+          path: |
+            build/libs/ProtocolLib.jar
+            build/libs/ProtocolLib-Spigot.jar

.github/workflows/dev-build.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '21'
+          java-version: '25'
           cache: 'gradle'
 
       - name: Run gradle build lifecycle
@@ -27,7 +27,9 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: ProtocolLib
-          path: build/libs/ProtocolLib.jar
+          path: |
+            build/libs/ProtocolLib.jar
+            build/libs/ProtocolLib-Spigot.jar
 
       - name: Create or update GitHub pre-release
         env:
@@ -41,3 +43,4 @@ jobs:
           NEW_NOTES="$RELEASE_NOTES"$'\n'"* [$SHORT_HASH] $COMMIT_MSG"
           gh release edit dev-build --notes "$NEW_NOTES" --repo ${{ github.repository }}
           gh release upload dev-build build/libs/ProtocolLib.jar#ProtocolLib.jar --clobber --repo ${{ github.repository }}
+          gh release upload dev-build build/libs/ProtocolLib-Spigot.jar#ProtocolLib-Spigot.jar --clobber --repo ${{ github.repository }}

AGENTS.md

@@ -0,0 +1,124 @@
+# ProtocolLib Agent Guide
+
+This file applies to the entire repository. Read `.github/CONTRIBUTING.md` before changing Minecraft support, packet
+definitions, reflection, or public wrappers.
+
+## Repository Basics
+
+- The main project uses the Gradle wrapper. Do not use `TinyProtocol/pom.xml` to build ProtocolLib.
+- The Java toolchain and current Spigot dependency are defined in `build.gradle.kts`.
+- Keep the Java 25 build toolchain separate from the Java 17 production bytecode target.
+- Production code is under `src/main/java`; JUnit tests and NMS test initialization are under `src/test/java`.
+- Keep changes focused. Do not combine protocol fixes with unrelated cleanup or formatting.
+- Preserve public API and binary compatibility unless the task explicitly requires a breaking change.
+
+## Build and Test Commands
+
+```shell
+./gradlew test
+./gradlew build shadowJar
+```
+
+Run the smallest relevant test while developing:
+
+```shell
+./gradlew test --tests fully.qualified.TestClass
+./gradlew test --tests fully.qualified.TestClass.testMethod
+```
+
+After changing production Java code, run the targeted tests and then the complete test suite. Use `build shadowJar` when
+the task affects packaging, dependencies, release support, or the final plugin artifact.
+
+Do not introduce another build system, test runner, formatter, or lint tool unless the repository adopts it separately.
+
+## Important Code Areas
+
+- `PacketType.java`: public packet constants, current IDs, aliases, and deprecated packet definitions.
+- `injector/packet/internal/ProtocolRegistry_1_20_5.java`: current packet discovery and codec registration.
+- `utility/MinecraftVersion.java`: named Minecraft versions and the latest supported release.
+- `utility/MinecraftProtocolVersion.java`: Minecraft release to protocol-number mappings.
+- `ProtocolLibrary.java`: supported version bounds and latest release date.
+- `utility/MinecraftReflection.java`: centralized NMS and CraftBukkit class discovery.
+- `reflect/StructureModifier.java`: indexed packet field access and conversion contract.
+- `wrappers/`: stable public representations of unstable NMS structures.
+- `events/PacketContainer.java` and `events/AbstractStructure.java`: packet construction and typed field access.
+- `src/test/java/com/comphenix/protocol/BukkitInitialization.java`: test bootstrap for CraftBukkit and NMS access.
+
+## Minecraft Release Updates
+
+Follow the complete checklist in `.github/CONTRIBUTING.md`. In particular:
+
+- Update all version metadata together; do not bump only the Gradle dependency.
+- Reconcile every serverbound and clientbound packet in every protocol phase with `PacketType`.
+- Add packet types for newly split packets instead of forcing incompatible shapes through an older packet constant.
+- Preserve removed public `PacketType` constants in the deprecated section.
+- Update `MinecraftProtocolVersion` only when the protocol number actually changed.
+
+Every packet exposed by the current NMS protocol registries must have a matching `PacketType`. An undefined or incorrectly
+renamed packet can abort registration of later packets in the same registry.
+
+## Version Compatibility
+
+- Put version checks at the narrowest affected boundary.
+- Treat the current supported server API shape as the primary path. Use older supported shapes only as narrow fallbacks.
+- Keep the pre-change code path intact whenever possible.
+- Use named `MinecraftVersion` constants with `atOrAbove()` instead of scattered version strings.
+- A public method should keep the same signature and broad contract across versions.
+- If Minecraft removed a concept, return an unsupported or absent result consistent with existing APIs. Do not claim an
+  unrelated packet or class is the removed type.
+- When Minecraft splits one packet into several packets, expose and use the new packet types explicitly.
+- Preserve unrelated packet fields when adapting or rewriting one logical value.
+
+The current test dependency exercises the latest supported server. Review older guarded paths carefully because they may
+not execute in the local test run.
+
+## Packet and Reflection Rules
+
+- Treat the current server packet classes, record components, constructors, and codecs as authoritative.
+- Prefer existing `MinecraftReflection`, `FuzzyReflection`, and accessor helpers over new direct reflection.
+- Prefer structural and type-based matching where obfuscated names are unstable.
+- Search for an existing class resolver, converter, or accessor before adding another one.
+- Cache stable reflective lookups following nearby patterns; do not repeatedly scan classes on packet hot paths.
+- Do not hide reflection failures with broad catches, silent defaults, or unrelated fallback types.
+- Account for static fields, inherited fields, records, nested implementations, and duplicate field types when writing
+  fuzzy contracts.
+
+## `StructureModifier` Contract
+
+Typed accessors returned from packet APIs must behave like normal `StructureModifier` instances.
+
+- `size()`, `getFields()`, `getField()`, target metadata, and field metadata must agree.
+- `readSafely()` returns `null` for an absent index.
+- `writeSafely()` ignores an absent index without throwing.
+- `withTarget()` must preserve the modifier's behavior for the new target.
+- `writeDefaults()` must remain safe.
+- Converters must be applied symmetrically on reads and writes.
+
+If a packet no longer contains a real backing field, prefer an empty modifier when compatible. If a virtual field is
+required for API compatibility, initialize all modifier metadata and test its inherited methods.
+
+## Wrapper and Converter Rules
+
+- Wrapper factories, converters, getters, setters, and `deepClone()` must describe the same logical value.
+- Preserve converter symmetry: converting specific to generic and back must not unexpectedly lose represented state.
+- If a wrapper handle changes from a nested value to an entire packet, define logical `equals()` and `hashCode()` so
+  unrelated packet metadata does not affect equality.
+- Clones that represent the same logical value should compare equal.
+- Do not fabricate legacy states that the modern wire format cannot distinguish; document or surface the limitation.
+- Record or immutable packet updates must retain entity IDs, flags, and other components not owned by the wrapper.
+
+## Tests
+
+- Call `BukkitInitialization.initializeAll()` before tests that resolve CraftBukkit or NMS classes.
+- Prefer regression tests using the actual Spigot packet classes supplied by the test dependency.
+- Test reads, writes, safe access, cloning, equality, and preservation of unrelated fields when changing wrappers.
+- Test modifier metadata and inherited methods when introducing a custom `StructureModifier`.
+- Re-enable disabled tests when fixing the incompatibility that caused them to be disabled.
+- Do not weaken assertions or encode known incorrect behavior merely to make a new Minecraft version pass.
+
+## Documentation and Review
+
+- Update Javadocs when version support, nullability, or unsupported behavior changes.
+- Update `.github/CONTRIBUTING.md` when the repository-wide build or release workflow changes.
+- Keep this file operational and durable; do not add task-specific notes, temporary workarounds, or current PR details.
+- Before finishing, inspect the complete diff for accidental API changes and unrelated edits.

Readme.md

@@ -14,16 +14,19 @@ lead to more subtle bugs.
 
 * [Spigot Page](https://spigotmc.org/resources/protocollib.1997/)
 * [Releases](https://github.com/dmulloy2/ProtocolLib/releases)
-* [Dev Build](https://github.com/dmulloy2/ProtocolLib/releases/tag/dev-build)
-* [JavaDoc](https://dmulloy2.net/ProtocolLib/javadoc/)
+* [Dev Builds](https://ci.dmulloy2.net/job/ProtocolLib/)
+* [JavaDoc](https://ci.dmulloy2.net/job/ProtocolLib/javadoc/index.html)
 * [Protocol Wiki](https://minecraft.wiki/w/Minecraft_Wiki:Projects/wiki.vg_merge/Protocol)
 
+`ProtocolLib.jar` is the primary Paper plugin. Spigot servers must use the compatibility artifact,
+`ProtocolLib-Spigot.jar`. The Maven artifact is the platform-neutral library shared by both distributions.
+
 ### Compilation
 
 ProtocolLib is built with [Gradle](https://gradle.org/). If you have it installed, just run
 `./gradlew build` in the root project folder. Other gradle targets you may be interested in 
 include `clean`, `test`, and `shadowJar`. `shadowJar` will create a jar with all dependencies
-(ByteBuddy) included.
+(ByteBuddy) included for both Paper and Spigot.
 
 ### A new API
 
@@ -66,6 +69,48 @@ dependencies {
 }
 ```
 
+#### Snapshot builds
+
+Snapshot builds are available for testing changes before the next release. To use `5.5.0-SNAPSHOT`,
+add the [public repository](https://repo.dmulloy2.net/repository/public/) and update your dependency version.
+
+For Maven:
+
+```xml
+<repositories>
+  <repository>
+    <id>dmulloy2-public</id>
+    <url>https://repo.dmulloy2.net/repository/public/</url>
+  </repository>
+</repositories>
+
+<dependencies>
+  <dependency>
+    <groupId>net.dmulloy2</groupId>
+    <artifactId>ProtocolLib</artifactId>
+    <version>5.5.0-SNAPSHOT</version>
+    <scope>provided</scope>
+  </dependency>
+</dependencies>
+```
+
+For Gradle:
+
+```gradle
+repositories {
+    mavenCentral()
+    maven {
+        url = uri('https://repo.dmulloy2.net/repository/public/')
+    }
+}
+
+dependencies {
+    compileOnly 'net.dmulloy2:ProtocolLib:5.5.0-SNAPSHOT'
+}
+```
+
+#### Accessing the API
+
 Then get a reference to ProtocolManager in onLoad() or onEnable() and you're good to go.
 
 ````java
@@ -92,25 +137,26 @@ protocolManager.addPacketListener(new PacketAdapter(
 });
 ````
 
-It's also possible to read and modify the content of these packets. For instance, you can create a global
-censor by listening for Packet3Chat events:
+It's also possible to read and modify the content of packets, including the ones sent by a client. For
+instance, you can censor the text players write on signs by listening for `UPDATE_SIGN` packets:
 
 ````java
-// Censor
+// Censor signs
 protocolManager.addPacketListener(new PacketAdapter(
     this,
     ListenerPriority.NORMAL,
-    PacketType.Play.Client.CHAT
+    PacketType.Play.Client.UPDATE_SIGN
 ) {
     @Override
     public void onPacketReceiving(PacketEvent event) {
         PacketContainer packet = event.getPacket();
-        String message = packet.getStrings().read(0);
+        String[] lines = packet.getStringArrays().read(0);
 
-        if (message.contains("shit") || message.contains("damn")) {
-            event.setCancelled(true);
-            event.getPlayer().sendMessage("Bad manners!");
+        for (int i = 0; i < lines.length; i++) {
+            lines[i] = lines[i].replace("shit", "****").replace("damn", "****");
         }
+
+        packet.getStringArrays().write(0, lines);
     }
 });
 ````

TinyProtocol/src/main/java/com/comphenix/tinyprotocol/TinyProtocol.java

@@ -64,7 +64,7 @@ public abstract class TinyProtocol {
 
     // Packets we have to intercept
     private static final Class<?> PACKET_LOGIN_IN_START = Reflection.getClass("{nms}.PacketLoginInStart", "net.minecraft.network.protocol.login.PacketLoginInStart");
-    private static final FieldAccessor<GameProfile> getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
+    private static final FieldAccessor<String> getPlayerName = new PlayerNameAccessor();
 
     // Speedup channel lookup
     private Map<String, Channel> channelLookup = new MapMaker().weakValues().makeMap();
@@ -492,6 +492,59 @@ public abstract class TinyProtocol {
         }
     }
 
+    /**
+     * Get the player name from the login start packet.
+     * This fixes the issue from 1.19 where the GameProfile field has been removed from this login packet.
+     *
+     * @author gamerover98
+     */
+    private static class PlayerNameAccessor implements FieldAccessor<String> {
+
+        private FieldAccessor<String> getPlayerName;
+        private FieldAccessor<GameProfile> getGameProfile;
+
+        PlayerNameAccessor() {
+            try {
+                this.getGameProfile = Reflection.getField(PACKET_LOGIN_IN_START, GameProfile.class, 0);
+            } catch (IllegalArgumentException illegalArgumentException) {
+                // nothing to do.
+            }
+
+            try {
+                //HOT-FIX for 1.19+
+                this.getPlayerName = Reflection.getField(PACKET_LOGIN_IN_START, String.class, 0);
+            } catch (IllegalArgumentException illegalArgumentException) {
+                // nothing to do.
+            }
+
+            if (getGameProfile == null && getPlayerName == null) {
+                throw new UnsupportedOperationException("The current server version is not supported by TinyProtocol");
+            }
+        }
+
+        @Override
+        public String get(Object target) {
+            if (getPlayerName != null) {
+                String playerName = getPlayerName.get(target);
+                return playerName.substring(0, Math.min(16, playerName.length()));
+            }
+
+            return getGameProfile.get(target).getName();
+        }
+
+        @Override
+        public void set(Object target, Object value) {
+            throw new UnsupportedOperationException("Not supported");
+        }
+
+        @Override
+        public boolean hasField(Object target) {
+            return getPlayerName != null
+                    ? getPlayerName.hasField(target)
+                    : getGameProfile.hasField(target);
+        }
+    }
+
     /**
      * Channel handler that is inserted into the player's channel pipeline, allowing us to intercept sent and received packets.
      * 
@@ -533,8 +586,7 @@ public abstract class TinyProtocol {
 
         private void handleLoginStart(Channel channel, Object packet) {
             if (PACKET_LOGIN_IN_START.isInstance(packet)) {
-                GameProfile profile = getGameProfile.get(packet);
-                channelLookup.put(profile.getName(), channel);
+                channelLookup.put(getPlayerName.get(packet), channel);
             }
         }
     }

build.gradle.kts

@@ -1,38 +1,20 @@
-//import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
-//import io.github.patrick.gradle.remapper.RemapTask
-import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar.Companion.shadowJar
-import org.gradle.api.tasks.testing.logging.TestExceptionFormat
-
 plugins {
     `java-library`
     `maven-publish`
-    `signing`
-    id("com.gradleup.shadow") version "9.0.2"
-    // id("io.github.patrick.remapper") version "1.4.2"
-    id("com.vanniktech.maven.publish") version "0.34.0"
-    id("io.papermc.paperweight.userdev") version "2.0.0-beta.18"
+    signing
+    id("io.github.patrick.remapper") version "1.4.3"
+    id("com.vanniktech.maven.publish") version "0.36.0"
 }
 
 group = "net.dmulloy2"
 description = "Provides access to the Minecraft protocol"
 
-val mcVersion = "1.21.8"
+val mcVersion: String by project
 val isSnapshot = version.toString().endsWith("-SNAPSHOT")
+val isJitPack = System.getenv("JITPACK")?.equals("true", ignoreCase = true) ?: false
 val commitHash = System.getenv("COMMIT_SHA") ?: ""
 val isCI = commitHash.isNotEmpty()
 
-paperweight {
-    reobfArtifactConfiguration = io.papermc.paperweight.userdev.ReobfArtifactConfiguration.REOBF_PRODUCTION
-}
-
-tasks.assemble {
-    dependsOn(tasks.reobfJar)
-}
-
-/*tasks.shadowJar {
-    dependsOn(tasks.assemble)
-}*/
-
 repositories {
     if (!isCI) {
         mavenLocal()
@@ -59,66 +41,35 @@ repositories {
 }
 
 dependencies {
-    implementation("net.bytebuddy:byte-buddy:1.17.5")
-    // compileOnly("org.spigotmc:spigot-api:${mcVersion}-R0.1-SNAPSHOT")
-    // compileOnly("org.spigotmc:spigot:${mcVersion}-R0.1-SNAPSHOT:remapped-mojang")
-    compileOnly("io.netty:netty-all:4.0.23.Final")
-    compileOnly("net.kyori:adventure-text-serializer-gson:4.24.0")
-    compileOnly("net.kyori:adventure-text-serializer-ansi:4.24.0")
+    implementation("net.bytebuddy:byte-buddy:1.18.2")
+    compileOnly("org.spigotmc:spigot-api:${mcVersion}-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot:${mcVersion}-R0.1-SNAPSHOT")
+    compileOnly("io.netty:netty-all:4.2.8.Final")
+    compileOnly("net.kyori:adventure-text-serializer-gson:4.25.0")
     compileOnly("com.googlecode.json-simple:json-simple:1.1.1")
-
-    paperweight.paperDevBundle("1.21.8-R0.1-SNAPSHOT")
-
-    testImplementation("org.junit.jupiter:junit-jupiter-engine:5.10.0")
-    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.10.0")
-    testRuntimeOnly("org.junit.platform:junit-platform-launcher:1.10.0")
-    testImplementation("org.mockito:mockito-core:5.6.0")
-    testImplementation("io.netty:netty-common:4.1.97.Final")
-    testImplementation("io.netty:netty-transport:4.1.97.Final")
-    // testImplementation("org.spigotmc:spigot:${mcVersion}-R0.1-SNAPSHOT:remapped-mojang")
-    testImplementation("net.kyori:adventure-text-serializer-gson:4.24.0")
-    testImplementation("net.kyori:adventure-text-serializer-plain:4.24.0")
-    testImplementation("net.kyori:adventure-text-serializer-ansi:4.24.0")
+    compileOnly("commons-lang:commons-lang:2.6")
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_21
-    targetCompatibility = JavaVersion.VERSION_21
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(25))
+    }
+}
+
+sourceSets {
+    test {
+        java.setSrcDirs(emptyList<String>())
+        resources.setSrcDirs(emptyList<String>())
+    }
 }
 
 tasks {
-    processResources {
-        val fullVersion = if (isSnapshot && isCI) "${version}-${commitHash.take(7)}" else version
-
-        eachFile {
-            expand("version" to fullVersion)
-        }
-    }
-
     test {
-        useJUnitPlatform()
-        testLogging {
-            exceptionFormat = TestExceptionFormat.FULL
-        }
+        dependsOn(":paper:test")
     }
 
-    shadowJar {
-        dependencies {
-            include(dependency("net.bytebuddy:byte-buddy:.*"))
-        }
-        relocate("net.bytebuddy", "com.comphenix.net.bytebuddy")
-
-        /*manifest {
-            attributes(
-                "paperweight-mappings-namespace" to "mojang"
-            )
-        }*/
-
-        // archiveFileName = "ProtocolLib.jar"
-    }
-
-    reobfJar {
-        outputJar = layout.buildDirectory.file("libs/ProtocolLib.jar")
+    check {
+        dependsOn(":paper:check", ":spigot:check")
     }
 
     javadoc {
@@ -127,12 +78,21 @@ tasks {
 
     compileJava {
         options.encoding = "UTF-8"
+        options.release.set(17)
     }
 }
 
+tasks.register("shadowJar") {
+    group = "build"
+    description = "Builds the Paper and Spigot plugin distributions."
+    dependsOn(":paper:shadowJar", ":spigot:shadowJar")
+}
+
 mavenPublishing {
     publishToMavenCentral()
-    signAllPublications()
+    if (!isSnapshot && !isJitPack) {
+        signAllPublications()
+    }
 
     coordinates("$group", project.name, "$version")
 

gradle.properties

@@ -1,4 +1,5 @@
-version=5.4.1-SNAPSHOT
+version=5.5.0-SNAPSHOT
+mcVersion=26.3
 mavenCentralUsername=
 mavenCentralPassword=
 signing.keyId=

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/2d6327017519d23b96af35865dc997fcb544fb40/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -84,7 +86,7 @@ done
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
 # Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
-APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -112,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 
 # Determine the Java command to use to start the JVM.
@@ -170,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -203,15 +203,14 @@ fi
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 # Collect all arguments for the java command:
-#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
 #     and any embedded shellness will be escaped.
 #   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
 #     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
-        org.gradle.wrapper.GradleWrapperMain \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
 # Stop when "xargs" is not available.

gradlew.bat

@@ -13,6 +13,8 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
@@ -43,11 +45,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -57,22 +59,21 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
 :execute
 @rem Setup the command line
 
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
 
 :end
 @rem End local scope for the variables with windows NT shell

paper/build.gradle.kts

@@ -0,0 +1,104 @@
+import org.gradle.api.attributes.java.TargetJvmVersion
+import org.gradle.api.tasks.testing.logging.TestExceptionFormat
+
+plugins {
+    `java-library`
+    id("com.gradleup.shadow") version "9.4.0"
+    id("io.papermc.paperweight.userdev") version "2.0.0-beta.21"
+}
+
+group = "net.dmulloy2"
+version = rootProject.version
+
+val mcVersion: String by project
+val isSnapshot = version.toString().endsWith("-SNAPSHOT")
+val commitHash = System.getenv("COMMIT_SHA") ?: ""
+val isCI = commitHash.isNotEmpty()
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven("https://repo.papermc.io/repository/maven-public/")
+    maven("https://repo.codemc.io/repository/nms/")
+    maven("https://hub.spigotmc.org/nexus/content/groups/public/")
+    maven("https://libraries.minecraft.net/") {
+        metadataSources {
+            mavenPom()
+            artifact()
+            ignoreGradleMetadataRedirection()
+        }
+    }
+}
+
+dependencies {
+    implementation(project(":"))
+    paperweight.paperDevBundle("$mcVersion.build.+")
+
+    compileOnly("io.netty:netty-all:4.2.8.Final")
+    compileOnly("net.kyori:adventure-text-serializer-gson:4.25.0")
+    compileOnly("commons-lang:commons-lang:2.6")
+
+    testImplementation("org.junit.jupiter:junit-jupiter-engine:6.0.1")
+    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:6.0.1")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher:6.0.1")
+    testImplementation("org.mockito:mockito-core:5.21.0")
+    testImplementation("io.netty:netty-common:4.2.8.Final")
+    testImplementation("io.netty:netty-transport:4.2.8.Final")
+    testImplementation("net.kyori:adventure-text-serializer-gson:4.25.0")
+    testImplementation("net.kyori:adventure-text-serializer-plain:4.25.0")
+    testImplementation("commons-lang:commons-lang:2.6")
+}
+
+paperweight.reobfArtifactConfiguration =
+    io.papermc.paperweight.userdev.ReobfArtifactConfiguration.MOJANG_PRODUCTION
+
+configurations.matching { it.name == "compileClasspath" || it.name == "runtimeClasspath" || it.name == "testCompileClasspath" || it.name == "testRuntimeClasspath" }.configureEach {
+    attributes {
+        attribute(TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE, 25)
+    }
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(25))
+    }
+}
+
+sourceSets {
+    test {
+        java.srcDir(rootProject.file("src/test/java"))
+        resources.srcDir(rootProject.file("src/test/resources"))
+    }
+}
+
+tasks {
+    processResources {
+        val fullVersion = if (isSnapshot && isCI) "${version}-${commitHash.take(7)}" else version
+
+        eachFile {
+            expand("version" to fullVersion)
+        }
+    }
+
+    test {
+        useJUnitPlatform()
+        testLogging {
+            exceptionFormat = TestExceptionFormat.FULL
+        }
+    }
+
+    compileJava {
+        options.release.set(17)
+    }
+
+    shadowJar {
+        relocate("net.bytebuddy", "com.comphenix.net.bytebuddy")
+
+        manifest {
+            attributes("paperweight-mappings-namespace" to "mojang")
+        }
+
+        destinationDirectory.set(rootProject.layout.buildDirectory.dir("libs"))
+        archiveFileName.set("ProtocolLib.jar")
+    }
+}

paper/src/main/java/com/comphenix/protocol/paper/PaperPlatformProvider.java

@@ -0,0 +1,105 @@
+package com.comphenix.protocol.paper;
+
+import java.util.List;
+import java.util.function.Consumer;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+
+import com.comphenix.protocol.ProtocolLib;
+import com.comphenix.protocol.internal.PlatformProvider;
+
+import io.netty.channel.Channel;
+import io.papermc.paper.command.brigadier.BasicCommand;
+import io.papermc.paper.command.brigadier.CommandSourceStack;
+import io.papermc.paper.network.ChannelInitializeListenerHolder;
+import net.kyori.adventure.key.Key;
+
+public final class PaperPlatformProvider implements PlatformProvider {
+
+    public static final Key CHANNEL_INITIALIZER_KEY = Key.key("protocollib", "channel-initializer");
+
+    @Override
+    public boolean hasEarlyChannelInitialization() {
+        return true;
+    }
+
+    @Override
+    public Runnable registerChannelInitializer(Consumer<Channel> channelInitializer) {
+        ChannelInitializeListenerHolder.addListener(CHANNEL_INITIALIZER_KEY, channelInitializer::accept);
+        return () -> ChannelInitializeListenerHolder.removeListener(CHANNEL_INITIALIZER_KEY);
+    }
+
+    @Override
+    public void registerCommand(ProtocolLib plugin, String name, CommandExecutor executor) {
+        CommandMetadata metadata = getMetadata(name);
+        Command command = new RegisteredCommand(name, metadata);
+
+        plugin.registerCommand(
+                name,
+                metadata.description(),
+                metadata.aliases(),
+                new RegisteredBasicCommand(name, metadata, command, executor));
+    }
+
+    private static CommandMetadata getMetadata(String name) {
+        return switch (name) {
+            case "protocol" -> new CommandMetadata(
+                    "Performs administrative tasks regarding ProtocolLib.",
+                    "/<command> config|check|update|timings|listeners|version|dump",
+                    "protocol.admin",
+                    List.of());
+            case "packet" -> new CommandMetadata(
+                    "Add or remove a simple packet listener.",
+                    "/<command> add|remove|names client|server [ID start]-[ID stop] [detailed]",
+                    "protocol.admin",
+                    List.of());
+            case "filter" -> new CommandMetadata(
+                    "Add or remove programmable filters to the packet listeners.",
+                    "/<command> add|remove name [ID start]-[ID stop]",
+                    "protocol.admin",
+                    List.of("packet_filter"));
+            case "packetlog" -> new CommandMetadata(
+                    "Logs hex representations of packets to a file or console",
+                    "/<command> <protocol> <sender> <packet> [location]",
+                    "protocol.admin",
+                    List.of());
+            default -> throw new IllegalArgumentException("Unknown ProtocolLib command " + name);
+        };
+    }
+
+    private record CommandMetadata(String description, String usage, String permission, List<String> aliases) {
+    }
+
+    private record RegisteredBasicCommand(
+            String name,
+            CommandMetadata metadata,
+            Command command,
+            CommandExecutor executor) implements BasicCommand {
+
+        @Override
+        public void execute(CommandSourceStack source, String[] arguments) {
+            if (!this.executor.onCommand(source.getSender(), this.command, this.name, arguments)) {
+                source.getSender().sendMessage(this.metadata.usage().replace("<command>", this.name));
+            }
+        }
+
+        @Override
+        public String permission() {
+            return this.metadata.permission();
+        }
+    }
+
+    private static final class RegisteredCommand extends Command {
+
+        private RegisteredCommand(String name, CommandMetadata metadata) {
+            super(name, metadata.description(), metadata.usage(), metadata.aliases());
+        }
+
+        @Override
+        public boolean execute(CommandSender sender, String commandLabel, String[] args) {
+            throw new UnsupportedOperationException();
+        }
+    }
+}

paper/src/main/resources/META-INF/services/com.comphenix.protocol.internal.PlatformProvider

@@ -0,0 +1 @@
+com.comphenix.protocol.paper.PaperPlatformProvider

paper/src/main/resources/paper-plugin.yml

@@ -0,0 +1,22 @@
+name: ProtocolLib
+version: ${version}
+description: Provides read/write access to the Minecraft protocol.
+authors: [dmulloy2]
+
+main: com.comphenix.protocol.ProtocolLib
+load: STARTUP
+api-version: "26.3"
+folia-supported: true
+
+permissions:
+  protocol.*:
+    description: Gives access to everything.
+    children:
+      protocol.admin: true
+      protocol.info: true
+  protocol.admin:
+    description: Able to initiate the update process and configure debug mode.
+    default: op
+  protocol.info:
+    description: Can read update notifications and error reports.
+    default: op

settings.gradle

@@ -3,3 +3,5 @@
  */
 
 rootProject.name = 'ProtocolLib'
+
+include 'paper', 'spigot'

spigot/build.gradle.kts

@@ -0,0 +1,79 @@
+import org.gradle.api.attributes.java.TargetJvmVersion
+
+plugins {
+    `java-library`
+    id("com.gradleup.shadow") version "9.4.0"
+}
+
+group = "net.dmulloy2"
+version = rootProject.version
+
+val mcVersion: String by project
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven("https://repo.codemc.io/repository/nms/")
+    maven("https://hub.spigotmc.org/nexus/content/groups/public/")
+    maven("https://libraries.minecraft.net/") {
+        metadataSources {
+            mavenPom()
+            artifact()
+            ignoreGradleMetadataRedirection()
+        }
+    }
+}
+
+dependencies {
+    implementation(project(":"))
+    compileOnly("org.spigotmc:spigot-api:${mcVersion}-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot:${mcVersion}-R0.1-SNAPSHOT")
+    compileOnly("io.netty:netty-all:4.2.8.Final")
+    compileOnly("net.kyori:adventure-text-serializer-gson:4.25.0")
+    compileOnly("com.googlecode.json-simple:json-simple:1.1.1")
+
+    testImplementation("org.junit.jupiter:junit-jupiter-engine:6.0.1")
+    testRuntimeOnly("org.junit.platform:junit-platform-launcher:6.0.1")
+    testImplementation("org.mockito:mockito-core:5.21.0")
+    testImplementation("io.netty:netty-transport:4.2.8.Final")
+    testImplementation("org.spigotmc:spigot:${mcVersion}-R0.1-SNAPSHOT")
+}
+
+configurations.matching { it.name == "compileClasspath" || it.name == "runtimeClasspath" || it.name == "testCompileClasspath" || it.name == "testRuntimeClasspath" }.configureEach {
+    attributes {
+        attribute(TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE, 25)
+    }
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(25))
+    }
+}
+
+tasks {
+    processResources {
+        eachFile {
+            expand("version" to project.version)
+        }
+    }
+
+    test {
+        useJUnitPlatform()
+    }
+
+    compileJava {
+        options.release.set(17)
+    }
+
+    shadowJar {
+        relocate("net.bytebuddy", "com.comphenix.net.bytebuddy")
+
+        manifest {
+            attributes("paperweight-mappings-namespace" to "mojang")
+        }
+
+        destinationDirectory.set(rootProject.layout.buildDirectory.dir("libs"))
+        archiveFileName.set("ProtocolLib-Spigot.jar")
+    }
+}

spigot/src/main/java/com/comphenix/protocol/spigot/SpigotPlatformProvider.java

@@ -0,0 +1,34 @@
+package com.comphenix.protocol.spigot;
+
+import java.util.function.Consumer;
+
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.PluginCommand;
+
+import com.comphenix.protocol.ProtocolLib;
+import com.comphenix.protocol.internal.PlatformProvider;
+
+import io.netty.channel.Channel;
+
+public final class SpigotPlatformProvider implements PlatformProvider {
+
+    @Override
+    public boolean hasEarlyChannelInitialization() {
+        return false;
+    }
+
+    @Override
+    public Runnable registerChannelInitializer(Consumer<Channel> channelInitializer) {
+        throw new UnsupportedOperationException("Early channel initialization is unavailable");
+    }
+
+    @Override
+    public void registerCommand(ProtocolLib plugin, String name, CommandExecutor executor) {
+        PluginCommand command = plugin.getCommand(name);
+        if (command == null) {
+            throw new IllegalStateException("plugin.yml might be corrupt.");
+        }
+
+        command.setExecutor(executor);
+    }
+}

spigot/src/main/resources/META-INF/services/com.comphenix.protocol.internal.PlatformProvider

@@ -0,0 +1 @@
+com.comphenix.protocol.spigot.SpigotPlatformProvider

spigot/src/main/resources/plugin.yml

@@ -1,9 +1,9 @@
 name: ProtocolLib
 version: ${version}
 description: Provides read/write access to the Minecraft protocol.
-authors: [dmulloy2, comphenix]
+authors: [dmulloy2]
 
-main: com.comphenix.protocol.ProtocolLibSpigot
+main: com.comphenix.protocol.ProtocolLib
 load: STARTUP
 database: false
 api-version: "1.13"
@@ -44,4 +44,4 @@ permissions:
     default: op
   protocol.info:
     description: Can read update notifications and error reports.
-    default: op
+    default: op

spigot/src/test/java/com/comphenix/protocol/PlatformCommandRegistrarTest.java

@@ -0,0 +1,26 @@
+package com.comphenix.protocol;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.PluginCommand;
+import org.junit.jupiter.api.Test;
+
+import com.comphenix.protocol.spigot.SpigotPlatformProvider;
+
+class PlatformCommandRegistrarTest {
+
+    @Test
+    void registersLegacyExecutorFromPluginDescriptor() {
+        ProtocolLib plugin = mock(ProtocolLib.class);
+        CommandExecutor executor = mock(CommandExecutor.class);
+        PluginCommand command = mock(PluginCommand.class);
+        when(plugin.getCommand("protocol")).thenReturn(command);
+
+        new SpigotPlatformProvider().registerCommand(plugin, "protocol", executor);
+
+        verify(command).setExecutor(executor);
+    }
+}

spigot/src/test/java/com/comphenix/protocol/injector/netty/manager/PlatformChannelInitializerTest.java

@@ -0,0 +1,17 @@
+package com.comphenix.protocol.injector.netty.manager;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
+
+import org.junit.jupiter.api.Test;
+
+import com.comphenix.protocol.internal.PlatformProvider;
+class PlatformChannelInitializerTest {
+
+    @Test
+    void reportsPaperInitializerUnavailable() {
+        PlatformProvider provider = PlatformProvider.get();
+        assertInstanceOf(com.comphenix.protocol.spigot.SpigotPlatformProvider.class, provider);
+        assertFalse(provider.hasEarlyChannelInitialization());
+    }
+}

src/main/java/com/comphenix/protocol/BukkitListener.java

@@ -1,38 +0,0 @@
-package com.comphenix.protocol;
-
-import com.comphenix.protocol.injector.PacketFilterManager;
-
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerJoinEvent;
-import org.bukkit.event.player.PlayerQuitEvent;
-import org.bukkit.event.server.PluginDisableEvent;
-
-class BukkitListener implements Listener {
-    private final PacketFilterManager manager;
-
-    BukkitListener(PacketFilterManager manager) {
-        this.manager = manager;
-    }
-
-//    @EventHandler(priority = EventPriority.LOWEST)
-//    public void handleLogin(PlayerLoginEvent event) {
-//        networkManagerInjector.getInjector(event.getPlayer()).inject();
-//    }
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void handleJoin(PlayerJoinEvent event) {
-        manager.injectPlayer(event.getPlayer());
-    }
-
-    @EventHandler(priority = EventPriority.MONITOR)
-    public void handleQuit(PlayerQuitEvent event) {
-        manager.removePlayer(event.getPlayer());
-    }
-
-    @EventHandler(priority = EventPriority.MONITOR)
-    public void handlePluginUnload(PluginDisableEvent event) {
-        manager.removePacketListeners(event.getPlugin());
-    }
-}

src/main/java/com/comphenix/protocol/CommandBase.java

@@ -21,19 +21,21 @@ import java.util.ArrayDeque;
 import java.util.Arrays;
 import java.util.Deque;
 
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.error.Report;
 import com.comphenix.protocol.error.ReportType;
 
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-
 /**
  * Base class for all our commands.
  * 
  * @author Kristian
  */
-abstract class CommandBase {
+abstract class CommandBase implements CommandExecutor {
     public static final ReportType REPORT_COMMAND_ERROR = new ReportType("Cannot execute command %s.");
     public static final ReportType REPORT_UNEXPECTED_COMMAND = new ReportType("Incorrect command assigned to %s.");
     
@@ -56,8 +58,15 @@ abstract class CommandBase {
         this.minimumArgumentCount = minimumArgumentCount;
     }
 
-    public boolean onCommand(CommandSender sender, String[] args) {
+    @Override
+    public final boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
         try {
+            // Make sure we're dealing with the correct command
+            if (!command.getName().equalsIgnoreCase(name)) {
+                reporter.reportWarning(this, Report.newBuilder(REPORT_UNEXPECTED_COMMAND).messageParam(this));
+                return false;
+            }
+
             if (permission != null && !sender.hasPermission(permission)) {
                 sender.sendMessage(ChatColor.RED + "You haven't got permission to run this command.");
                 return true;
@@ -72,7 +81,7 @@ abstract class CommandBase {
             }
         } catch (Throwable ex) {
             reporter.reportDetailed(this,
-                    Report.newBuilder(REPORT_COMMAND_ERROR).error(ex).messageParam(name).callerParam(sender, name, args)
+                    Report.newBuilder(REPORT_COMMAND_ERROR).error(ex).messageParam(name).callerParam(sender, label, args)
             );
             return true;
         }

src/main/java/com/comphenix/protocol/CommandProtocol.java

@@ -120,25 +120,9 @@ class CommandProtocol extends CommandBase {
             return;
         }
 
-        // Perform on an async thread
-        Runnable notify = new Runnable() {
-            @Override
-            public void run() {
-                if (command) {
-                    sender.sendMessage(ChatColor.YELLOW + "[ProtocolLib] " + updater.getResult());
-                    String remoteVersion = updater.getRemoteVersion();
-                    if (remoteVersion != null) {
-                        sender.sendMessage(ChatColor.YELLOW + "Remote version: " + remoteVersion);
-                        sender.sendMessage(ChatColor.YELLOW + "Current version: " + plugin.getDescription().getVersion());
-                    }
-                } else if (updater.shouldNotify() || config.isDebug()) {
-                    sender.sendMessage(ChatColor.YELLOW + "[ProtocolLib] " + updater.getResult());
-                }
-
-                updater.removeListener(this);
-                updateFinished();
-            }
-        };
+        // Top-level class instead of anonymous inner class so that PaperPluginClassLoader
+        // can resolve the .class entry when BukkitScheduler dispatches it on the main thread.
+        Runnable notify = new UpdateNotifyRunnable(sender, command, updater, config, plugin, this);
         updater.start(type);
         updater.addListener(notify);
     }

src/main/java/com/comphenix/protocol/LegacyLoginListener.java

@@ -1,22 +0,0 @@
-package com.comphenix.protocol;
-
-import com.comphenix.protocol.injector.PacketFilterManager;
-
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-import org.bukkit.event.player.PlayerLoginEvent;
-
-class LegacyLoginListener implements Listener {
-    private final PacketFilterManager manager;
-
-    LegacyLoginListener(PacketFilterManager manager) {
-        this.manager = manager;
-    }
-
-    @SuppressWarnings("deprecation")
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void handleLogin(PlayerLoginEvent event) {
-        manager.injectPlayer(event.getPlayer());
-    }
-}

src/main/java/com/comphenix/protocol/PacketLogging.java

@@ -16,6 +16,22 @@
  */
 package com.comphenix.protocol;
 
+import com.comphenix.protocol.PacketType.Protocol;
+import com.comphenix.protocol.PacketType.Sender;
+import com.comphenix.protocol.events.ListeningWhitelist;
+import com.comphenix.protocol.events.PacketEvent;
+import com.comphenix.protocol.events.PacketListener;
+import com.comphenix.protocol.injector.netty.WirePacket;
+import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.MethodAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.Plugin;
+
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
@@ -32,28 +48,11 @@ import java.util.logging.Level;
 import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 
-import com.comphenix.protocol.PacketType.Protocol;
-import com.comphenix.protocol.PacketType.Sender;
-import com.comphenix.protocol.error.ErrorReporter;
-import com.comphenix.protocol.events.ListeningWhitelist;
-import com.comphenix.protocol.events.PacketEvent;
-import com.comphenix.protocol.events.PacketListener;
-import com.comphenix.protocol.injector.PacketFilterManager;
-import com.comphenix.protocol.injector.netty.WirePacket;
-import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.MethodAccessor;
-import com.comphenix.protocol.utility.MinecraftReflection;
-
-import org.bukkit.ChatColor;
-import org.bukkit.command.CommandSender;
-import org.bukkit.plugin.Plugin;
-
 /**
  * Logs packets to a given stream
  * @author dmulloy2
  */
-public class PacketLogging extends CommandBase implements PacketListener {
+public class PacketLogging implements CommandExecutor, PacketListener {
     public static final String NAME = "packetlog";
 
     private static MethodAccessor HEX_DUMP;
@@ -70,94 +69,93 @@ public class PacketLogging extends CommandBase implements PacketListener {
     private final ProtocolManager manager;
     private final Plugin plugin;
 
-    PacketLogging(ErrorReporter reporter, Plugin plugin, PacketFilterManager manager) {
-        super(reporter, CommandBase.PERMISSION_ADMIN, NAME, 2);
+    PacketLogging(Plugin plugin, ProtocolManager manager) {
         this.plugin = plugin;
         this.manager = manager;
     }
 
     @Override
-    public boolean handleCommand(CommandSender sender, String[] args) {
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
         PacketType type = null;
 
         try {
-            if (args.length <= 2) {
-                sender.sendMessage(ChatColor.RED + "Invalid syntax: /packetlog <protocol> <sender> <packet> [location]");
-                return true;
-            }
+            if (args.length > 2) {
+                Protocol protocol;
 
-            Protocol protocol;
+                try {
+                    protocol = Protocol.valueOf(args[0].toUpperCase());
+                } catch (IllegalArgumentException ex) {
+                    sender.sendMessage(ChatColor.RED + "Unknown protocol " + args[0]);
+                    return true;
+                }
 
-            try {
-                protocol = Protocol.valueOf(args[0].toUpperCase());
-            } catch (IllegalArgumentException ex) {
-                sender.sendMessage(ChatColor.RED + "Unknown protocol " + args[0]);
-                return true;
-            }
+                Sender pSender;
 
-            Sender pSender;
+                try {
+                    pSender = Sender.valueOf(args[1].toUpperCase());
+                } catch (IllegalArgumentException ex) {
+                    sender.sendMessage(ChatColor.RED + "Unknown sender: " + args[1]);
+                    return true;
+                }
 
-            try {
-                pSender = Sender.valueOf(args[1].toUpperCase());
-            } catch (IllegalArgumentException ex) {
-                sender.sendMessage(ChatColor.RED + "Unknown sender: " + args[1]);
-                return true;
-            }
-
-            try {
-                try { // Try IDs first
-                    int id = Integer.parseInt(args[2]);
-                    type = PacketType.findCurrent(protocol, pSender, id);
-                } catch (NumberFormatException ex) { // Check packet names
-                    String name = args[2];
-                    for (PacketType packet : PacketType.values()) {
-                        if (packet.getProtocol() == protocol && packet.getSender() == pSender) {
-                            if (packet.name().equalsIgnoreCase(name)) {
-                                type = packet;
-                                break;
-                            }
-                            for (String className : packet.getClassNames()) {
-                                if (className.equalsIgnoreCase(name)) {
+                try {
+                    try { // Try IDs first
+                        int id = Integer.parseInt(args[2]);
+                        type = PacketType.findCurrent(protocol, pSender, id);
+                    } catch (NumberFormatException ex) { // Check packet names
+                        String name = args[2];
+                        for (PacketType packet : PacketType.values()) {
+                            if (packet.getProtocol() == protocol && packet.getSender() == pSender) {
+                                if (packet.name().equalsIgnoreCase(name)) {
                                     type = packet;
                                     break;
                                 }
+                                for (String className : packet.getClassNames()) {
+                                    if (className.equalsIgnoreCase(name)) {
+                                        type = packet;
+                                        break;
+                                    }
+                                }
                             }
                         }
                     }
+                } catch (IllegalArgumentException ex) { // RIP
+                    type = null;
                 }
-            } catch (IllegalArgumentException ex) { // RIP
-                type = null;
-            }
 
-            if (type == null) {
-                sender.sendMessage(ChatColor.RED + "Unknown packet: " + args[2]);
+                if (type == null) {
+                    sender.sendMessage(ChatColor.RED + "Unknown packet: " + args[2]);
+                    return true;
+                }
+
+                if (args.length > 3) {
+                    if (args[3].equalsIgnoreCase("console")) {
+                        this.location = LogLocation.CONSOLE;
+                    } else {
+                        this.location = LogLocation.FILE;
+                    }
+                }
+
+                if (pSender == Sender.CLIENT) {
+                    if (receivingTypes.contains(type)) {
+                        receivingTypes.remove(type);
+                    } else {
+                        receivingTypes.add(type);
+                    }
+                } else {
+                    if (sendingTypes.contains(type)) {
+                        sendingTypes.remove(type);
+                    } else {
+                        sendingTypes.add(type);
+                    }
+                }
+
+                startLogging();
+                sender.sendMessage(ChatColor.GREEN + "Now logging " + type.getPacketClass().getSimpleName());
                 return true;
             }
 
-            if (args.length > 3) {
-                if (args[3].equalsIgnoreCase("console")) {
-                    this.location = LogLocation.CONSOLE;
-                } else {
-                    this.location = LogLocation.FILE;
-                }
-            }
-
-            if (pSender == Sender.CLIENT) {
-                if (receivingTypes.contains(type)) {
-                    receivingTypes.remove(type);
-                } else {
-                    receivingTypes.add(type);
-                }
-            } else {
-                if (sendingTypes.contains(type)) {
-                    sendingTypes.remove(type);
-                } else {
-                    sendingTypes.add(type);
-                }
-            }
-
-            startLogging();
-            sender.sendMessage(ChatColor.GREEN + "Now logging " + type.getPacketClass().getSimpleName());
+            sender.sendMessage(ChatColor.RED + "Invalid syntax: /packetlog <protocol> <sender> <packet> [location]");
             return true;
         } catch (Throwable ex) {
             sender.sendMessage(ChatColor.RED + "Failed to parse command: " + ex);

src/main/java/com/comphenix/protocol/PacketType.java

@@ -14,7 +14,7 @@ import java.util.Map;
 import java.util.UUID;
 import java.util.function.BiConsumer;
 
-import com.comphenix.protocol.utility.WordUtils;
+import org.apache.commons.lang.WordUtils;
 import org.bukkit.Bukkit;
 
 import com.comphenix.protocol.PacketTypeLookup.ClassLookup;
@@ -133,114 +133,124 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
             public static final PacketType CUSTOM_CHAT_COMPLETIONS =      new PacketType(PROTOCOL, SENDER, 0x17, "CustomChatCompletions");
             public static final PacketType CUSTOM_PAYLOAD =               new PacketType(PROTOCOL, SENDER, 0x18, "CustomPayload", "SPacketCustomPayload");
             public static final PacketType DAMAGE_EVENT =                 new PacketType(PROTOCOL, SENDER, 0x19, "DamageEvent", "ClientboundDamageEventPacket");
-            public static final PacketType DEBUG_SAMPLE =                 new PacketType(PROTOCOL, SENDER, 0x1A, "DebugSample");
-            public static final PacketType DELETE_CHAT_MESSAGE =          new PacketType(PROTOCOL, SENDER, 0x1B, "DeleteChat");
-            public static final PacketType KICK_DISCONNECT =              new PacketType(PROTOCOL, SENDER, 0x1C, "Disconnect", "KickDisconnect", "SPacketDisconnect");
-            public static final PacketType DISGUISED_CHAT =               new PacketType(PROTOCOL, SENDER, 0x1D, "DisguisedChat");
-            public static final PacketType ENTITY_STATUS =                new PacketType(PROTOCOL, SENDER, 0x1E, "EntityEvent", "EntityStatus", "SPacketEntityStatus");
-            public static final PacketType ENTITY_POSITION_SYNC =         new PacketType(PROTOCOL, SENDER, 0x1F, "EntityPositionSync");
-            public static final PacketType EXPLOSION =                    new PacketType(PROTOCOL, SENDER, 0x20, "Explode", "Explosion", "SPacketExplosion");
-            public static final PacketType UNLOAD_CHUNK =                 new PacketType(PROTOCOL, SENDER, 0x21, "ForgetLevelChunk", "UnloadChunk", "SPacketUnloadChunk");
-            public static final PacketType GAME_STATE_CHANGE =            new PacketType(PROTOCOL, SENDER, 0x22, "GameEvent", "GameStateChange", "SPacketChangeGameState");
-            public static final PacketType OPEN_WINDOW_HORSE =            new PacketType(PROTOCOL, SENDER, 0x23, "HorseScreenOpen", "OpenWindowHorse");
-            public static final PacketType HURT_ANIMATION =               new PacketType(PROTOCOL, SENDER, 0x24, "HurtAnimation", "ClientboundHurtAnimationPacket");
-            public static final PacketType INITIALIZE_BORDER =            new PacketType(PROTOCOL, SENDER, 0x25, "InitializeBorder");
-            public static final PacketType KEEP_ALIVE =                   new PacketType(PROTOCOL, SENDER, 0x26, "KeepAlive", "SPacketKeepAlive");
-            public static final PacketType MAP_CHUNK =                    new PacketType(PROTOCOL, SENDER, 0x27, "LevelChunkWithLight", "MapChunk", "SPacketChunkData");
-            public static final PacketType WORLD_EVENT =                  new PacketType(PROTOCOL, SENDER, 0x28, "LevelEvent", "WorldEvent", "SPacketEffect");
-            public static final PacketType WORLD_PARTICLES =              new PacketType(PROTOCOL, SENDER, 0x29, "LevelParticles", "WorldParticles", "SPacketParticles");
-            public static final PacketType LIGHT_UPDATE =                 new PacketType(PROTOCOL, SENDER, 0x2A, "LightUpdate");
-            public static final PacketType LOGIN =                        new PacketType(PROTOCOL, SENDER, 0x2B, "Login", "SPacketJoinGame");
-            public static final PacketType MAP =                          new PacketType(PROTOCOL, SENDER, 0x2C, "MapItemData", "Map", "SPacketMaps");
-            public static final PacketType OPEN_WINDOW_MERCHANT =         new PacketType(PROTOCOL, SENDER, 0x2D, "MerchantOffers", "OpenWindowMerchant");
-            public static final PacketType REL_ENTITY_MOVE =              new PacketType(PROTOCOL, SENDER, 0x2E, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$Pos", "Entity$RelEntityMove", "Entity$PacketPlayOutRelEntityMove");
-            public static final PacketType REL_ENTITY_MOVE_LOOK =         new PacketType(PROTOCOL, SENDER, 0x2F, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$PosRot", "Entity$RelEntityMoveLook", "Entity$PacketPlayOutRelEntityMoveLook");
-            public static final PacketType MOVE_MINECART =                new PacketType(PROTOCOL, SENDER, 0x30, "MoveMinecart");
-            public static final PacketType ENTITY_LOOK =                  new PacketType(PROTOCOL, SENDER, 0x31, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$Rot", "Entity$EntityLook", "Entity$PacketPlayOutEntityLook");
-            public static final PacketType VEHICLE_MOVE =                 new PacketType(PROTOCOL, SENDER, 0x32, "MoveVehicle", "VehicleMove", "SPacketMoveVehicle");
-            public static final PacketType OPEN_BOOK =                    new PacketType(PROTOCOL, SENDER, 0x33, "OpenBook");
-            public static final PacketType OPEN_WINDOW =                  new PacketType(PROTOCOL, SENDER, 0x34, "OpenScreen", "OpenWindow", "SPacketOpenWindow");
-            public static final PacketType OPEN_SIGN_EDITOR =             new PacketType(PROTOCOL, SENDER, 0x35, "OpenSignEditor", "SPacketSignEditorOpen");
-            public static final PacketType PING =                         new PacketType(PROTOCOL, SENDER, 0x36, "Ping");
-            public static final PacketType PONG_RESPONSE =                new PacketType(PROTOCOL, SENDER, 0x37, "PongResponse");
-            public static final PacketType AUTO_RECIPE =                  new PacketType(PROTOCOL, SENDER, 0x38, "PlaceGhostRecipe", "AutoRecipe", "SPacketPlaceGhostRecipe");
-            public static final PacketType ABILITIES =                    new PacketType(PROTOCOL, SENDER, 0x39, "PlayerAbilities", "Abilities", "SPacketPlayerAbilities");
-            public static final PacketType CHAT =                         new PacketType(PROTOCOL, SENDER, 0x3A, "PlayerChat", "Chat", "SPacketChat");
-            public static final PacketType PLAYER_COMBAT_END =            new PacketType(PROTOCOL, SENDER, 0x3B, "PlayerCombatEnd");
-            public static final PacketType PLAYER_COMBAT_ENTER =          new PacketType(PROTOCOL, SENDER, 0x3C, "PlayerCombatEnter");
-            public static final PacketType PLAYER_COMBAT_KILL =           new PacketType(PROTOCOL, SENDER, 0x3D, "PlayerCombatKill");
-            public static final PacketType PLAYER_INFO_REMOVE =           new PacketType(PROTOCOL, SENDER, 0x3E, "PlayerInfoRemove");
-            public static final PacketType PLAYER_INFO =                  new PacketType(PROTOCOL, SENDER, 0x3F, "PlayerInfoUpdate", "PlayerInfo");
-            public static final PacketType LOOK_AT =                      new PacketType(PROTOCOL, SENDER, 0x40, "PlayerLookAt", "LookAt", "SPacketPlayerPosLook");
-            public static final PacketType POSITION =                     new PacketType(PROTOCOL, SENDER, 0x41, "PlayerPosition", "Position");
-            public static final PacketType PLAYER_ROTATION =              new PacketType(PROTOCOL, SENDER, 0x42, "PlayerRotation");
-            public static final PacketType RECIPE_BOOK_ADD =              new PacketType(PROTOCOL, SENDER, 0x43, "RecipeBookAdd");
-            public static final PacketType RECIPE_BOOK_REMOVE =           new PacketType(PROTOCOL, SENDER, 0x44, "RecipeBookRemove");
-            public static final PacketType RECIPE_BOOK_SETTINGS =         new PacketType(PROTOCOL, SENDER, 0x45, "RecipeBookSettings");
-            public static final PacketType ENTITY_DESTROY =               new PacketType(PROTOCOL, SENDER, 0x46, "RemoveEntities", "EntityDestroy", "SPacketDestroyEntities");
-            public static final PacketType REMOVE_ENTITY_EFFECT =         new PacketType(PROTOCOL, SENDER, 0x47, "RemoveMobEffect", "RemoveEntityEffect", "SPacketRemoveEntityEffect");
-            public static final PacketType RESET_SCORE =                  new PacketType(PROTOCOL, SENDER, 0x48, "ResetScore", "ResetScorePacket");
-            public static final PacketType REMOVE_RESOURCE_PACK =         new PacketType(PROTOCOL, SENDER, 0x49, "ResourcePackPop", "ResourcePackPopPacket");
-            public static final PacketType ADD_RESOURCE_PACK =            new PacketType(PROTOCOL, SENDER, 0x4A, "ResourcePackPush", "ResourcePackPushPacket");
-            public static final PacketType RESPAWN =                      new PacketType(PROTOCOL, SENDER, 0x4B, "Respawn", "SPacketRespawn");
-            public static final PacketType ENTITY_HEAD_ROTATION =         new PacketType(PROTOCOL, SENDER, 0x4C, "RotateHead", "EntityHeadRotation", "SPacketEntityHeadLook");
-            public static final PacketType MULTI_BLOCK_CHANGE =           new PacketType(PROTOCOL, SENDER, 0x4D, "SectionBlocksUpdate", "MultiBlockChange", "SPacketMultiBlockChange");
-            public static final PacketType SELECT_ADVANCEMENT_TAB =       new PacketType(PROTOCOL, SENDER, 0x4E, "SelectAdvancementsTab", "SelectAdvancementTab", "SPacketSelectAdvancementsTab");
-            public static final PacketType SERVER_DATA =                  new PacketType(PROTOCOL, SENDER, 0x4F, "ServerData");
-            public static final PacketType SET_ACTION_BAR_TEXT =          new PacketType(PROTOCOL, SENDER, 0x50, "SetActionBarText");
-            public static final PacketType SET_BORDER_CENTER =            new PacketType(PROTOCOL, SENDER, 0x51, "SetBorderCenter");
-            public static final PacketType SET_BORDER_LERP_SIZE =         new PacketType(PROTOCOL, SENDER, 0x52, "SetBorderLerpSize");
-            public static final PacketType SET_BORDER_SIZE =              new PacketType(PROTOCOL, SENDER, 0x53, "SetBorderSize");
-            public static final PacketType SET_BORDER_WARNING_DELAY =     new PacketType(PROTOCOL, SENDER, 0x54, "SetBorderWarningDelay");
-            public static final PacketType SET_BORDER_WARNING_DISTANCE =  new PacketType(PROTOCOL, SENDER, 0x55, "SetBorderWarningDistance");
-            public static final PacketType CAMERA =                       new PacketType(PROTOCOL, SENDER, 0x56, "SetCamera", "Camera", "SPacketCamera");
-            public static final PacketType VIEW_CENTRE =                  new PacketType(PROTOCOL, SENDER, 0x57, "SetChunkCacheCenter", "ViewCentre");
-            public static final PacketType VIEW_DISTANCE =                new PacketType(PROTOCOL, SENDER, 0x58, "SetChunkCacheRadius", "ViewDistance");
-            public static final PacketType SET_CURSOR_ITEM =              new PacketType(PROTOCOL, SENDER, 0x59, "SetCursorItem");
-            public static final PacketType SPAWN_POSITION =               new PacketType(PROTOCOL, SENDER, 0x5A, "SetDefaultSpawnPosition", "SpawnPosition", "SPacketSpawnPosition");
-            public static final PacketType SCOREBOARD_DISPLAY_OBJECTIVE = new PacketType(PROTOCOL, SENDER, 0x5B, "SetDisplayObjective", "ScoreboardDisplayObjective", "SPacketDisplayObjective");
-            public static final PacketType ENTITY_METADATA =              new PacketType(PROTOCOL, SENDER, 0x5C, "SetEntityData", "EntityMetadata", "SPacketEntityMetadata");
-            public static final PacketType ATTACH_ENTITY =                new PacketType(PROTOCOL, SENDER, 0x5D, "SetEntityLink", "AttachEntity", "SPacketEntityAttach");
-            public static final PacketType ENTITY_VELOCITY =              new PacketType(PROTOCOL, SENDER, 0x5E, "SetEntityMotion", "EntityVelocity", "SPacketEntityVelocity");
-            public static final PacketType ENTITY_EQUIPMENT =             new PacketType(PROTOCOL, SENDER, 0x5F, "SetEquipment", "EntityEquipment", "SPacketEntityEquipment");
-            public static final PacketType EXPERIENCE =                   new PacketType(PROTOCOL, SENDER, 0x60, "SetExperience", "Experience", "SPacketSetExperience");
-            public static final PacketType UPDATE_HEALTH =                new PacketType(PROTOCOL, SENDER, 0x61, "SetHealth", "UpdateHealth", "SPacketUpdateHealth");
-            public static final PacketType HELD_ITEM_SLOT =               new PacketType(PROTOCOL, SENDER, 0x62, "SetHeldSlot", "SetCarriedItem", "HeldItemSlot", "SPacketHeldItemChange");
-            public static final PacketType SCOREBOARD_OBJECTIVE =         new PacketType(PROTOCOL, SENDER, 0x63, "SetObjective", "ScoreboardObjective", "SPacketScoreboardObjective");
-            public static final PacketType MOUNT =                        new PacketType(PROTOCOL, SENDER, 0x64, "SetPassengers", "Mount", "SPacketSetPassengers");
-            public static final PacketType SET_PLAYER_INVENTORY =         new PacketType(PROTOCOL, SENDER, 0x65, "SetPlayerInventory");
-            public static final PacketType SCOREBOARD_TEAM =              new PacketType(PROTOCOL, SENDER, 0x66, "SetPlayerTeam", "ScoreboardTeam", "SPacketTeams");
-            public static final PacketType SCOREBOARD_SCORE =             new PacketType(PROTOCOL, SENDER, 0x67, "SetScore", "ScoreboardScore", "SPacketUpdateScore");
-            public static final PacketType UPDATE_SIMULATION_DISTANCE =   new PacketType(PROTOCOL, SENDER, 0x68, "SetSimulationDistance");
-            public static final PacketType SET_SUBTITLE_TEXT =            new PacketType(PROTOCOL, SENDER, 0x69, "SetSubtitleText");
-            public static final PacketType UPDATE_TIME =                  new PacketType(PROTOCOL, SENDER, 0x6A, "SetTime", "UpdateTime", "SPacketTimeUpdate");
-            public static final PacketType SET_TITLE_TEXT =               new PacketType(PROTOCOL, SENDER, 0x6B, "SetTitleText");
-            public static final PacketType SET_TITLES_ANIMATION =         new PacketType(PROTOCOL, SENDER, 0x6C, "SetTitlesAnimation");
-            public static final PacketType ENTITY_SOUND =                 new PacketType(PROTOCOL, SENDER, 0x6D, "SoundEntity", "EntitySound", "SPacketSoundEffect");
-            public static final PacketType NAMED_SOUND_EFFECT =           new PacketType(PROTOCOL, SENDER, 0x6E, "Sound", "NamedSoundEffect");
-            public static final PacketType START_CONFIGURATION =          new PacketType(PROTOCOL, SENDER, 0x6F, "StartConfiguration");
-            public static final PacketType STOP_SOUND =                   new PacketType(PROTOCOL, SENDER, 0x70, "StopSound");
-            public static final PacketType STORE_COOKIE =                 new PacketType(PROTOCOL, SENDER, 0x71, "StoreCookie");
-            public static final PacketType SYSTEM_CHAT =                  new PacketType(PROTOCOL, SENDER, 0x72, "SystemChat");
-            public static final PacketType PLAYER_LIST_HEADER_FOOTER =    new PacketType(PROTOCOL, SENDER, 0x73, "TabList", "PlayerListHeaderFooter", "SPacketPlayerListHeaderFooter");
-            public static final PacketType NBT_QUERY =                    new PacketType(PROTOCOL, SENDER, 0x74, "TagQuery", "NBTQuery");
-            public static final PacketType COLLECT =                      new PacketType(PROTOCOL, SENDER, 0x75, "TakeItemEntity", "Collect", "SPacketCollectItem");
-            public static final PacketType ENTITY_TELEPORT =              new PacketType(PROTOCOL, SENDER, 0x76, "TeleportEntity", "EntityTeleport", "SPacketEntityTeleport");
-            public static final PacketType TEST_INSTANCE_BLOCK_STATUS =   new PacketType(PROTOCOL, SENDER, 0x77, "ClientboundTestInstanceBlockStatus");
-            public static final PacketType TICKING_STATE =                new PacketType(PROTOCOL, SENDER, 0x78, "TickingState", "TickingStatePacket");
-            public static final PacketType TICKING_STEP_STATE =           new PacketType(PROTOCOL, SENDER, 0x79, "TickingStep", "TickingStepPacket");
-            public static final PacketType TRANSFER =                     new PacketType(PROTOCOL, SENDER, 0x7A, "Transfer");
-            public static final PacketType ADVANCEMENTS =                 new PacketType(PROTOCOL, SENDER, 0x7B, "UpdateAdvancements", "Advancements", "SPacketAdvancementInfo");
-            public static final PacketType UPDATE_ATTRIBUTES =            new PacketType(PROTOCOL, SENDER, 0x7C, "UpdateAttributes", "SPacketEntityProperties");
-            public static final PacketType ENTITY_EFFECT =                new PacketType(PROTOCOL, SENDER, 0x7D, "UpdateMobEffect", "EntityEffect", "SPacketEntityEffect");
-            public static final PacketType RECIPE_UPDATE =                new PacketType(PROTOCOL, SENDER, 0x7E, "UpdateRecipes", "RecipeUpdate");
-            public static final PacketType TAGS =                         new PacketType(PROTOCOL, SENDER, 0x7F, "UpdateTags", "Tags");
-            public static final PacketType PROJECTILE_POWER =             new PacketType(PROTOCOL, SENDER, 0x80, "ProjectilePower");
-            public static final PacketType REPORT_DETAILS =               new PacketType(PROTOCOL, SENDER, 0x81, "CustomReportDetails");
-            public static final PacketType SERVER_LINKS =                 new PacketType(PROTOCOL, SENDER, 0x82, "ServerLinks");
-            public static final PacketType TRACKED_WAYPOINT =             new PacketType(PROTOCOL, SENDER, 0x83, "TrackedWaypoint");
-            public static final PacketType CLEAR_DIALOG =                 new PacketType(PROTOCOL, SENDER, 0x84, "ClearDialog");
-            public static final PacketType SHOW_DIALOG =                  new PacketType(PROTOCOL, SENDER, 0x85, "ShowDialog");
+            public static final PacketType DEBUG_BLOCK_VALUE =            new PacketType(PROTOCOL, SENDER, 0x1A, "DebugBlockValue");
+            public static final PacketType DEBUG_CHUNK_VALUE =            new PacketType(PROTOCOL, SENDER, 0x1B, "DebugChunkValue");
+            public static final PacketType DEBUG_ENTITY_VALUE =           new PacketType(PROTOCOL, SENDER, 0x1C, "DebugEntityValue");
+            public static final PacketType DEBUG_EVENT =                  new PacketType(PROTOCOL, SENDER, 0x1D, "DebugEvent");
+            public static final PacketType DEBUG_SAMPLE =                 new PacketType(PROTOCOL, SENDER, 0x1E, "DebugSample");
+            public static final PacketType DELETE_CHAT_MESSAGE =          new PacketType(PROTOCOL, SENDER, 0x1F, "DeleteChat");
+            public static final PacketType KICK_DISCONNECT =              new PacketType(PROTOCOL, SENDER, 0x20, "Disconnect", "KickDisconnect", "SPacketDisconnect");
+            public static final PacketType DISGUISED_CHAT =               new PacketType(PROTOCOL, SENDER, 0x21, "DisguisedChat");
+            public static final PacketType ENTITY_STATUS =                new PacketType(PROTOCOL, SENDER, 0x22, "EntityEvent", "EntityStatus", "SPacketEntityStatus");
+            public static final PacketType ENTITY_POSITION_SYNC =         new PacketType(PROTOCOL, SENDER, 0x23, "EntityPositionSync");
+            public static final PacketType EXPLOSION =                    new PacketType(PROTOCOL, SENDER, 0x24, "Explode", "Explosion", "SPacketExplosion");
+            public static final PacketType ADD_TRANSIENT_BLOCK =          new PacketType(PROTOCOL, SENDER, 0x25, MinecraftVersion.v26_3, "AddTransientBlock");
+            public static final PacketType UNLOAD_CHUNK =                 new PacketType(PROTOCOL, SENDER, 0x26, MinecraftVersion.v26_3, "ForgetLevelChunk", "UnloadChunk", "SPacketUnloadChunk");
+            public static final PacketType GAME_STATE_CHANGE =            new PacketType(PROTOCOL, SENDER, 0x27, MinecraftVersion.v26_3, "GameEvent", "GameStateChange", "SPacketChangeGameState");
+            public static final PacketType GAME_RULE_VALUES =             new PacketType(PROTOCOL, SENDER, 0x28, MinecraftVersion.v26_3, "GameRuleValues");
+            public static final PacketType GAME_TEST_HIGHLIGHT_POS =      new PacketType(PROTOCOL, SENDER, 0x29, MinecraftVersion.v26_3, "GameTestHighlightPos");
+            public static final PacketType OPEN_WINDOW_HORSE =            new PacketType(PROTOCOL, SENDER, 0x2A, MinecraftVersion.v26_3, "MountScreenOpen", "HorseScreenOpen", "OpenWindowHorse");
+            public static final PacketType HURT_ANIMATION =               new PacketType(PROTOCOL, SENDER, 0x2B, MinecraftVersion.v26_3, "HurtAnimation", "ClientboundHurtAnimationPacket");
+            public static final PacketType INITIALIZE_BORDER =            new PacketType(PROTOCOL, SENDER, 0x2C, MinecraftVersion.v26_3, "InitializeBorder");
+            public static final PacketType KEEP_ALIVE =                   new PacketType(PROTOCOL, SENDER, 0x2D, MinecraftVersion.v26_3, "KeepAlive", "SPacketKeepAlive");
+            public static final PacketType MAP_CHUNK =                    new PacketType(PROTOCOL, SENDER, 0x2E, MinecraftVersion.v26_3, "LevelChunkWithLight", "MapChunk", "SPacketChunkData");
+            public static final PacketType WORLD_EVENT =                  new PacketType(PROTOCOL, SENDER, 0x2F, MinecraftVersion.v26_3, "LevelEvent", "WorldEvent", "SPacketEffect");
+            public static final PacketType WORLD_PARTICLES =              new PacketType(PROTOCOL, SENDER, 0x30, MinecraftVersion.v26_3, "LevelParticles", "WorldParticles", "SPacketParticles");
+            public static final PacketType LIGHT_UPDATE =                 new PacketType(PROTOCOL, SENDER, 0x31, MinecraftVersion.v26_3, "LightUpdate");
+            public static final PacketType LOGIN =                        new PacketType(PROTOCOL, SENDER, 0x32, MinecraftVersion.v26_3, "Login", "SPacketJoinGame");
+            public static final PacketType LOW_DISK_SPACE_WARNING =       new PacketType(PROTOCOL, SENDER, 0x33, MinecraftVersion.v26_3, "LowDiskSpaceWarning");
+            public static final PacketType MAP =                          new PacketType(PROTOCOL, SENDER, 0x34, MinecraftVersion.v26_3, "MapItemData", "Map", "SPacketMaps");
+            public static final PacketType OPEN_WINDOW_MERCHANT =         new PacketType(PROTOCOL, SENDER, 0x35, MinecraftVersion.v26_3, "MerchantOffers", "OpenWindowMerchant");
+            public static final PacketType REL_ENTITY_MOVE =              new PacketType(PROTOCOL, SENDER, 0x36, MinecraftVersion.v26_3, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$Pos", "Entity$RelEntityMove", "Entity$PacketPlayOutRelEntityMove");
+            public static final PacketType REL_ENTITY_MOVE_LOOK =         new PacketType(PROTOCOL, SENDER, 0x37, MinecraftVersion.v26_3, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$PosRot", "Entity$RelEntityMoveLook", "Entity$PacketPlayOutRelEntityMoveLook");
+            public static final PacketType MOVE_MINECART =                new PacketType(PROTOCOL, SENDER, 0x38, MinecraftVersion.v26_3, "MoveMinecart");
+            public static final PacketType ENTITY_LOOK =                  new PacketType(PROTOCOL, SENDER, 0x39, MinecraftVersion.v26_3, "net.minecraft.network.protocol.game.ClientboundMoveEntityPacket$Rot", "Entity$EntityLook", "Entity$PacketPlayOutEntityLook");
+            public static final PacketType VEHICLE_MOVE =                 new PacketType(PROTOCOL, SENDER, 0x3A, MinecraftVersion.v26_3, "MoveVehicle", "VehicleMove", "SPacketMoveVehicle");
+            public static final PacketType OPEN_BOOK =                    new PacketType(PROTOCOL, SENDER, 0x3B, MinecraftVersion.v26_3, "OpenBook");
+            public static final PacketType OPEN_WINDOW =                  new PacketType(PROTOCOL, SENDER, 0x3C, MinecraftVersion.v26_3, "OpenScreen", "OpenWindow", "SPacketOpenWindow");
+            public static final PacketType OPEN_SIGN_EDITOR =             new PacketType(PROTOCOL, SENDER, 0x3D, MinecraftVersion.v26_3, "OpenSignEditor", "SPacketSignEditorOpen");
+            public static final PacketType PING =                         new PacketType(PROTOCOL, SENDER, 0x3E, MinecraftVersion.v26_3, "Ping");
+            public static final PacketType PONG_RESPONSE =                new PacketType(PROTOCOL, SENDER, 0x3F, MinecraftVersion.v26_3, "PongResponse");
+            public static final PacketType AUTO_RECIPE =                  new PacketType(PROTOCOL, SENDER, 0x40, MinecraftVersion.v26_3, "PlaceGhostRecipe", "AutoRecipe", "SPacketPlaceGhostRecipe");
+            public static final PacketType ABILITIES =                    new PacketType(PROTOCOL, SENDER, 0x41, MinecraftVersion.v26_3, "PlayerAbilities", "Abilities", "SPacketPlayerAbilities");
+            public static final PacketType CHAT =                         new PacketType(PROTOCOL, SENDER, 0x42, MinecraftVersion.v26_3, "PlayerChat", "Chat", "SPacketChat");
+            public static final PacketType PLAYER_COMBAT_END =            new PacketType(PROTOCOL, SENDER, 0x43, MinecraftVersion.v26_3, "PlayerCombatEnd");
+            public static final PacketType PLAYER_COMBAT_ENTER =          new PacketType(PROTOCOL, SENDER, 0x44, MinecraftVersion.v26_3, "PlayerCombatEnter");
+            public static final PacketType PLAYER_COMBAT_KILL =           new PacketType(PROTOCOL, SENDER, 0x45, MinecraftVersion.v26_3, "PlayerCombatKill");
+            public static final PacketType PLAYER_INFO_REMOVE =           new PacketType(PROTOCOL, SENDER, 0x46, MinecraftVersion.v26_3, "PlayerInfoRemove");
+            public static final PacketType PLAYER_INFO =                  new PacketType(PROTOCOL, SENDER, 0x47, MinecraftVersion.v26_3, "PlayerInfoUpdate", "PlayerInfo");
+            public static final PacketType LOOK_AT =                      new PacketType(PROTOCOL, SENDER, 0x48, MinecraftVersion.v26_3, "PlayerLookAt", "LookAt", "SPacketPlayerPosLook");
+            public static final PacketType POSITION =                     new PacketType(PROTOCOL, SENDER, 0x49, MinecraftVersion.v26_3, "PlayerPosition", "Position");
+            public static final PacketType PLAYER_ROTATION =              new PacketType(PROTOCOL, SENDER, 0x4A, MinecraftVersion.v26_3, "PlayerRotation");
+            public static final PacketType RECIPE_BOOK_ADD =              new PacketType(PROTOCOL, SENDER, 0x4B, MinecraftVersion.v26_3, "RecipeBookAdd");
+            public static final PacketType RECIPE_BOOK_REMOVE =           new PacketType(PROTOCOL, SENDER, 0x4C, MinecraftVersion.v26_3, "RecipeBookRemove");
+            public static final PacketType RECIPE_BOOK_SETTINGS =         new PacketType(PROTOCOL, SENDER, 0x4D, MinecraftVersion.v26_3, "RecipeBookSettings");
+            public static final PacketType ENTITY_DESTROY =               new PacketType(PROTOCOL, SENDER, 0x4E, MinecraftVersion.v26_3, "RemoveEntities", "EntityDestroy", "SPacketDestroyEntities");
+            public static final PacketType REMOVE_ENTITY_EFFECT =         new PacketType(PROTOCOL, SENDER, 0x4F, MinecraftVersion.v26_3, "RemoveMobEffect", "RemoveEntityEffect", "SPacketRemoveEntityEffect");
+            public static final PacketType RESET_SCORE =                  new PacketType(PROTOCOL, SENDER, 0x50, MinecraftVersion.v26_3, "ResetScore", "ResetScorePacket");
+            public static final PacketType REMOVE_RESOURCE_PACK =         new PacketType(PROTOCOL, SENDER, 0x51, MinecraftVersion.v26_3, "ResourcePackPop", "ResourcePackPopPacket");
+            public static final PacketType ADD_RESOURCE_PACK =            new PacketType(PROTOCOL, SENDER, 0x52, MinecraftVersion.v26_3, "ResourcePackPush", "ResourcePackPushPacket");
+            public static final PacketType POST_EFFECTS =                 new PacketType(PROTOCOL, SENDER, 0x53, MinecraftVersion.v26_3, "PostEffects");
+            public static final PacketType RESPAWN =                      new PacketType(PROTOCOL, SENDER, 0x54, MinecraftVersion.v26_3, "Respawn", "SPacketRespawn");
+            public static final PacketType ENTITY_HEAD_ROTATION =         new PacketType(PROTOCOL, SENDER, 0x55, MinecraftVersion.v26_3, "RotateHead", "EntityHeadRotation", "SPacketEntityHeadLook");
+            public static final PacketType MULTI_BLOCK_CHANGE =           new PacketType(PROTOCOL, SENDER, 0x56, MinecraftVersion.v26_3, "SectionBlocksUpdate", "MultiBlockChange", "SPacketMultiBlockChange");
+            public static final PacketType SELECT_ADVANCEMENT_TAB =       new PacketType(PROTOCOL, SENDER, 0x57, MinecraftVersion.v26_3, "SelectAdvancementsTab", "SelectAdvancementTab", "SPacketSelectAdvancementsTab");
+            public static final PacketType SERVER_DATA =                  new PacketType(PROTOCOL, SENDER, 0x58, MinecraftVersion.v26_3, "ServerData");
+            public static final PacketType SET_ACTION_BAR_TEXT =          new PacketType(PROTOCOL, SENDER, 0x59, MinecraftVersion.v26_3, "SetActionBarText");
+            public static final PacketType SET_BORDER_CENTER =            new PacketType(PROTOCOL, SENDER, 0x5A, MinecraftVersion.v26_3, "SetBorderCenter");
+            public static final PacketType SET_BORDER_LERP_SIZE =         new PacketType(PROTOCOL, SENDER, 0x5B, MinecraftVersion.v26_3, "SetBorderLerpSize");
+            public static final PacketType SET_BORDER_SIZE =              new PacketType(PROTOCOL, SENDER, 0x5C, MinecraftVersion.v26_3, "SetBorderSize");
+            public static final PacketType SET_BORDER_WARNING_DELAY =     new PacketType(PROTOCOL, SENDER, 0x5D, MinecraftVersion.v26_3, "SetBorderWarningDelay");
+            public static final PacketType SET_BORDER_WARNING_DISTANCE =  new PacketType(PROTOCOL, SENDER, 0x5E, MinecraftVersion.v26_3, "SetBorderWarningDistance");
+            public static final PacketType CAMERA =                       new PacketType(PROTOCOL, SENDER, 0x5F, MinecraftVersion.v26_3, "SetCamera", "Camera", "SPacketCamera");
+            public static final PacketType VIEW_CENTRE =                  new PacketType(PROTOCOL, SENDER, 0x60, MinecraftVersion.v26_3, "SetChunkCacheCenter", "ViewCentre");
+            public static final PacketType VIEW_DISTANCE =                new PacketType(PROTOCOL, SENDER, 0x61, MinecraftVersion.v26_3, "SetChunkCacheRadius", "ViewDistance");
+            public static final PacketType SET_CURSOR_ITEM =              new PacketType(PROTOCOL, SENDER, 0x62, MinecraftVersion.v26_3, "SetCursorItem");
+            public static final PacketType SPAWN_POSITION =               new PacketType(PROTOCOL, SENDER, 0x63, MinecraftVersion.v26_3, "SetDefaultSpawnPosition", "SpawnPosition", "SPacketSpawnPosition");
+            public static final PacketType SCOREBOARD_DISPLAY_OBJECTIVE = new PacketType(PROTOCOL, SENDER, 0x64, MinecraftVersion.v26_3, "SetDisplayObjective", "ScoreboardDisplayObjective", "SPacketDisplayObjective");
+            public static final PacketType ENTITY_METADATA =              new PacketType(PROTOCOL, SENDER, 0x65, MinecraftVersion.v26_3, "SetEntityData", "EntityMetadata", "SPacketEntityMetadata");
+            public static final PacketType ATTACH_ENTITY =                new PacketType(PROTOCOL, SENDER, 0x66, MinecraftVersion.v26_3, "SetEntityLink", "AttachEntity", "SPacketEntityAttach");
+            public static final PacketType ENTITY_VELOCITY =              new PacketType(PROTOCOL, SENDER, 0x67, MinecraftVersion.v26_3, "SetEntityMotion", "EntityVelocity", "SPacketEntityVelocity");
+            public static final PacketType ENTITY_EQUIPMENT =             new PacketType(PROTOCOL, SENDER, 0x68, MinecraftVersion.v26_3, "SetEquipment", "EntityEquipment", "SPacketEntityEquipment");
+            public static final PacketType EXPERIENCE =                   new PacketType(PROTOCOL, SENDER, 0x69, MinecraftVersion.v26_3, "SetExperience", "Experience", "SPacketSetExperience");
+            public static final PacketType UPDATE_HEALTH =                new PacketType(PROTOCOL, SENDER, 0x6A, MinecraftVersion.v26_3, "SetHealth", "UpdateHealth", "SPacketUpdateHealth");
+            public static final PacketType HELD_ITEM_SLOT =               new PacketType(PROTOCOL, SENDER, 0x6B, MinecraftVersion.v26_3, "SetHeldSlot", "SetCarriedItem", "HeldItemSlot", "SPacketHeldItemChange");
+            public static final PacketType SCOREBOARD_OBJECTIVE =         new PacketType(PROTOCOL, SENDER, 0x6C, MinecraftVersion.v26_3, "SetObjective", "ScoreboardObjective", "SPacketScoreboardObjective");
+            public static final PacketType MOUNT =                        new PacketType(PROTOCOL, SENDER, 0x6D, MinecraftVersion.v26_3, "SetPassengers", "Mount", "SPacketSetPassengers");
+            public static final PacketType SET_PLAYER_INVENTORY =         new PacketType(PROTOCOL, SENDER, 0x6E, MinecraftVersion.v26_3, "SetPlayerInventory");
+            public static final PacketType SCOREBOARD_TEAM =              new PacketType(PROTOCOL, SENDER, 0x6F, MinecraftVersion.v26_3, "SetPlayerTeam", "ScoreboardTeam", "SPacketTeams");
+            public static final PacketType SCOREBOARD_SCORE =             new PacketType(PROTOCOL, SENDER, 0x70, MinecraftVersion.v26_3, "SetScore", "ScoreboardScore", "SPacketUpdateScore");
+            public static final PacketType UPDATE_SIMULATION_DISTANCE =   new PacketType(PROTOCOL, SENDER, 0x71, MinecraftVersion.v26_3, "SetSimulationDistance");
+            public static final PacketType SET_SUBTITLE_TEXT =            new PacketType(PROTOCOL, SENDER, 0x72, MinecraftVersion.v26_3, "SetSubtitleText");
+            public static final PacketType UPDATE_TIME =                  new PacketType(PROTOCOL, SENDER, 0x73, MinecraftVersion.v26_3, "SetTime", "UpdateTime", "SPacketTimeUpdate");
+            public static final PacketType SET_TITLE_TEXT =               new PacketType(PROTOCOL, SENDER, 0x74, MinecraftVersion.v26_3, "SetTitleText");
+            public static final PacketType SET_TITLES_ANIMATION =         new PacketType(PROTOCOL, SENDER, 0x75, MinecraftVersion.v26_3, "SetTitlesAnimation");
+            public static final PacketType ENTITY_SOUND =                 new PacketType(PROTOCOL, SENDER, 0x76, MinecraftVersion.v26_3, "SoundEntity", "EntitySound", "SPacketSoundEffect");
+            public static final PacketType NAMED_SOUND_EFFECT =           new PacketType(PROTOCOL, SENDER, 0x77, MinecraftVersion.v26_3, "Sound", "NamedSoundEffect");
+            public static final PacketType START_CONFIGURATION =          new PacketType(PROTOCOL, SENDER, 0x78, MinecraftVersion.v26_3, "StartConfiguration");
+            public static final PacketType STOP_SOUND =                   new PacketType(PROTOCOL, SENDER, 0x79, MinecraftVersion.v26_3, "StopSound");
+            public static final PacketType STORE_COOKIE =                 new PacketType(PROTOCOL, SENDER, 0x7A, MinecraftVersion.v26_3, "StoreCookie");
+            public static final PacketType SWING_ANIMATION =              new PacketType(PROTOCOL, SENDER, 0x7B, MinecraftVersion.v26_3, "SwingAnimation");
+            public static final PacketType SYSTEM_CHAT =                  new PacketType(PROTOCOL, SENDER, 0x7C, MinecraftVersion.v26_3, "SystemChat");
+            public static final PacketType PLAYER_LIST_HEADER_FOOTER =    new PacketType(PROTOCOL, SENDER, 0x7D, MinecraftVersion.v26_3, "TabList", "PlayerListHeaderFooter", "SPacketPlayerListHeaderFooter");
+            public static final PacketType NBT_QUERY =                    new PacketType(PROTOCOL, SENDER, 0x7E, MinecraftVersion.v26_3, "TagQuery", "NBTQuery");
+            public static final PacketType COLLECT =                      new PacketType(PROTOCOL, SENDER, 0x7F, MinecraftVersion.v26_3, "TakeItemEntity", "Collect", "SPacketCollectItem");
+            public static final PacketType ENTITY_TELEPORT =              new PacketType(PROTOCOL, SENDER, 0x80, MinecraftVersion.v26_3, "TeleportEntity", "EntityTeleport", "SPacketEntityTeleport");
+            public static final PacketType TEST_INSTANCE_BLOCK_STATUS =   new PacketType(PROTOCOL, SENDER, 0x81, MinecraftVersion.v26_3, "ClientboundTestInstanceBlockStatus");
+            public static final PacketType TICKING_STATE =                new PacketType(PROTOCOL, SENDER, 0x82, MinecraftVersion.v26_3, "TickingState", "TickingStatePacket");
+            public static final PacketType TICKING_STEP_STATE =           new PacketType(PROTOCOL, SENDER, 0x83, MinecraftVersion.v26_3, "TickingStep", "TickingStepPacket");
+            public static final PacketType TRANSFER =                     new PacketType(PROTOCOL, SENDER, 0x84, MinecraftVersion.v26_3, "Transfer");
+            public static final PacketType ADVANCEMENTS =                 new PacketType(PROTOCOL, SENDER, 0x85, MinecraftVersion.v26_3, "UpdateAdvancements", "Advancements", "SPacketAdvancementInfo");
+            public static final PacketType UPDATE_ATTRIBUTES =            new PacketType(PROTOCOL, SENDER, 0x86, MinecraftVersion.v26_3, "UpdateAttributes", "SPacketEntityProperties");
+            public static final PacketType ENTITY_EFFECT =                new PacketType(PROTOCOL, SENDER, 0x87, MinecraftVersion.v26_3, "UpdateMobEffect", "EntityEffect", "SPacketEntityEffect");
+            public static final PacketType RECIPE_UPDATE =                new PacketType(PROTOCOL, SENDER, 0x88, MinecraftVersion.v26_3, "UpdateRecipes", "RecipeUpdate");
+            public static final PacketType TAGS =                         new PacketType(PROTOCOL, SENDER, 0x89, MinecraftVersion.v26_3, "UpdateTags", "Tags");
+            public static final PacketType PROJECTILE_POWER =             new PacketType(PROTOCOL, SENDER, 0x8A, MinecraftVersion.v26_3, "ProjectilePower");
+            public static final PacketType REPORT_DETAILS =               new PacketType(PROTOCOL, SENDER, 0x8B, MinecraftVersion.v26_3, "CustomReportDetails");
+            public static final PacketType SERVER_LINKS =                 new PacketType(PROTOCOL, SENDER, 0x8C, MinecraftVersion.v26_3, "ServerLinks");
+            public static final PacketType TRACKED_WAYPOINT =             new PacketType(PROTOCOL, SENDER, 0x8D, MinecraftVersion.v26_3, "TrackedWaypoint");
+            public static final PacketType CLEAR_DIALOG =                 new PacketType(PROTOCOL, SENDER, 0x8E, MinecraftVersion.v26_3, "ClearDialog");
+            public static final PacketType SHOW_DIALOG =                  new PacketType(PROTOCOL, SENDER, 0x8F, MinecraftVersion.v26_3, "ShowDialog");
 
             /**
              * @deprecated Removed in 1.9
@@ -416,7 +426,6 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
              */
             @Deprecated
             public static final PacketType SPAWN_ENTITY_EXPERIENCE_ORB =  new PacketType(PROTOCOL, SENDER, 232, "AddExperienceOrb", "SpawnEntityExperienceOrb", "SPacketSpawnExperienceOrb");
-            
 
             private static final Server INSTANCE = new Server();
 
@@ -439,71 +448,74 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
             private static final Sender SENDER = Sender.CLIENT;
 
             public static final PacketType TELEPORT_ACCEPT =              new PacketType(PROTOCOL, SENDER, 0x00, "AcceptTeleportation", "TeleportAccept", "CPacketConfirmTeleport");
-            public static final PacketType TILE_NBT_QUERY =               new PacketType(PROTOCOL, SENDER, 0x01, "BlockEntityTagQuery", "TileNBTQuery");
-            public static final PacketType SELECT_BUNDLE_ITEM =           new PacketType(PROTOCOL, SENDER, 0x02, "SelectBundleItem");
-            public static final PacketType DIFFICULTY_CHANGE =            new PacketType(PROTOCOL, SENDER, 0x03, "ChangeDifficulty", "DifficultyChange");
-            public static final PacketType CHANGE_GAME_MODE =             new PacketType(PROTOCOL, SENDER, 0x04, "ChangeGameMode");
-            public static final PacketType CHAT_ACK =                     new PacketType(PROTOCOL, SENDER, 0x05, "ChatAck");
-            public static final PacketType CHAT_COMMAND =                 new PacketType(PROTOCOL, SENDER, 0x06, "ChatCommand");
-            public static final PacketType CHAT_COMMAND_SIGNED =          new PacketType(PROTOCOL, SENDER, 0x07, "ChatCommandSigned");
-            public static final PacketType CHAT =                         new PacketType(PROTOCOL, SENDER, 0x08, "Chat", "CPacketChatMessage");
-            public static final PacketType CHAT_SESSION_UPDATE =          new PacketType(PROTOCOL, SENDER, 0x09, "ChatSessionUpdate");
-            public static final PacketType CHUNK_BATCH_RECEIVED =         new PacketType(PROTOCOL, SENDER, 0x0A, "ChunkBatchReceived");
-            public static final PacketType CLIENT_COMMAND =               new PacketType(PROTOCOL, SENDER, 0x0B, "ClientCommand", "CPacketClientStatus");
-            public static final PacketType CLIENT_TICK_END =              new PacketType(PROTOCOL, SENDER, 0x0C, "ClientTickEnd");
-            public static final PacketType SETTINGS =                     new PacketType(PROTOCOL, SENDER, 0x0D, "ClientInformation", "Settings", "CPacketClientSettings");
-            public static final PacketType TAB_COMPLETE =                 new PacketType(PROTOCOL, SENDER, 0x0E, "CommandSuggestion", "TabComplete", "CPacketTabComplete");
-            public static final PacketType CONFIGURATION_ACK =            new PacketType(PROTOCOL, SENDER, 0x0F, "ConfigurationAcknowledged");
-            public static final PacketType ENCHANT_ITEM =                 new PacketType(PROTOCOL, SENDER, 0x10, "ContainerButtonClick", "EnchantItem", "CPacketEnchantItem");
-            public static final PacketType WINDOW_CLICK =                 new PacketType(PROTOCOL, SENDER, 0x11, "ContainerClick", "WindowClick", "CPacketClickWindow");
-            public static final PacketType CLOSE_WINDOW =                 new PacketType(PROTOCOL, SENDER, 0x12, "ContainerClose", "CloseWindow", "CPacketCloseWindow");
-            public static final PacketType CONTAINER_SLOT_STATE_CHANGED = new PacketType(PROTOCOL, SENDER, 0x13, "ContainerSlotStateChanged", "ContainerSlotStateChangedPacket");
-            public static final PacketType COOKIE_RESPONSE =              new PacketType(PROTOCOL, SENDER, 0x14, "CookieResponse");
-            public static final PacketType CUSTOM_PAYLOAD =               new PacketType(PROTOCOL, SENDER, 0x15, "CustomPayload", "CPacketCustomPayload");
-            public static final PacketType DEBUG_SAMPLE_SUBSCRIPTION =    new PacketType(PROTOCOL, SENDER, 0x16, "DebugSampleSubscription");
-            public static final PacketType B_EDIT =                       new PacketType(PROTOCOL, SENDER, 0x17, "EditBook", "BEdit");
-            public static final PacketType ENTITY_NBT_QUERY =             new PacketType(PROTOCOL, SENDER, 0x18, "EntityTagQuery", "EntityNBTQuery");
-            public static final PacketType USE_ENTITY =                   new PacketType(PROTOCOL, SENDER, 0x19, "Interact", "UseEntity", "CPacketUseEntity");
-            public static final PacketType JIGSAW_GENERATE =              new PacketType(PROTOCOL, SENDER, 0x1A, "JigsawGenerate");
-            public static final PacketType KEEP_ALIVE =                   new PacketType(PROTOCOL, SENDER, 0x1B, "KeepAlive", "CPacketKeepAlive");
-            public static final PacketType DIFFICULTY_LOCK =              new PacketType(PROTOCOL, SENDER, 0x1C, "LockDifficulty", "DifficultyLock");
-            public static final PacketType POSITION =                     new PacketType(PROTOCOL, SENDER, 0x1D, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$Pos", "Flying$Position", "Flying$PacketPlayInPosition", "CPacketPlayer$Position");
-            public static final PacketType POSITION_LOOK =                new PacketType(PROTOCOL, SENDER, 0x1E, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$PosRot", "Flying$PositionLook", "Flying$PacketPlayInPositionLook", "CPacketPlayer$PositionRotation");
-            public static final PacketType LOOK =                         new PacketType(PROTOCOL, SENDER, 0x1F, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$Rot", "Flying$Look", "Flying$PacketPlayInLook", "CPacketPlayer$Rotation");
-            public static final PacketType GROUND =                       new PacketType(PROTOCOL, SENDER, 0x20, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$StatusOnly", "Flying$d");
-            public static final PacketType VEHICLE_MOVE =                 new PacketType(PROTOCOL, SENDER, 0x21, "MoveVehicle", "VehicleMove", "CPacketVehicleMove");
-            public static final PacketType BOAT_MOVE =                    new PacketType(PROTOCOL, SENDER, 0x22, "PaddleBoat", "BoatMove", "CPacketSteerBoat");
-            public static final PacketType PICK_ITEM_FROM_BLOCK =         new PacketType(PROTOCOL, SENDER, 0x23, "PickItemFromBlock");
-            public static final PacketType PICK_ITEM =                    new PacketType(PROTOCOL, SENDER, 0x24, "PickItemFromEntity", "PickItem");
-            public static final PacketType PING_REQUEST =                 new PacketType(PROTOCOL, SENDER, 0x25, "PingRequest");
-            public static final PacketType AUTO_RECIPE =                  new PacketType(PROTOCOL, SENDER, 0x26, "PlaceRecipe", "AutoRecipe", "CPacketPlaceRecipe");
-            public static final PacketType ABILITIES =                    new PacketType(PROTOCOL, SENDER, 0x27, "PlayerAbilities", "Abilities", "CPacketPlayerAbilities");
-            public static final PacketType BLOCK_DIG =                    new PacketType(PROTOCOL, SENDER, 0x28, "PlayerAction", "BlockDig", "CPacketPlayerDigging");
-            public static final PacketType ENTITY_ACTION =                new PacketType(PROTOCOL, SENDER, 0x29, "PlayerCommand", "EntityAction", "CPacketEntityAction");
-            public static final PacketType STEER_VEHICLE =                new PacketType(PROTOCOL, SENDER, 0x2A, "PlayerInput", "SteerVehicle", "CPacketInput");
-            public static final PacketType PLAYER_LOADED =                new PacketType(PROTOCOL, SENDER, 0x2B, "PlayerLoaded");
-            public static final PacketType PONG =                         new PacketType(PROTOCOL, SENDER, 0x2C, "Pong");
-            public static final PacketType RECIPE_SETTINGS =              new PacketType(PROTOCOL, SENDER, 0x2D, "RecipeBookChangeSettings", "RecipeSettings");
-            public static final PacketType RECIPE_DISPLAYED =             new PacketType(PROTOCOL, SENDER, 0x2E, "RecipeBookSeenRecipe", "RecipeDisplayed", "CPacketRecipeInfo");
-            public static final PacketType ITEM_NAME =                    new PacketType(PROTOCOL, SENDER, 0x2F, "RenameItem", "ItemName");
-            public static final PacketType RESOURCE_PACK_STATUS =         new PacketType(PROTOCOL, SENDER, 0x30, "ResourcePack", "ResourcePackStatus", "CPacketResourcePackStatus");
-            public static final PacketType ADVANCEMENTS =                 new PacketType(PROTOCOL, SENDER, 0x31, "SeenAdvancements", "Advancements", "CPacketSeenAdvancements");
-            public static final PacketType TR_SEL =                       new PacketType(PROTOCOL, SENDER, 0x32, "SelectTrade", "TrSel");
-            public static final PacketType BEACON =                       new PacketType(PROTOCOL, SENDER, 0x33, "SetBeacon", "Beacon");
-            public static final PacketType HELD_ITEM_SLOT =               new PacketType(PROTOCOL, SENDER, 0x34, "SetCarriedItem", "HeldItemSlot", "CPacketHeldItemChange");
-            public static final PacketType SET_COMMAND_BLOCK =            new PacketType(PROTOCOL, SENDER, 0x35, "SetCommandBlock");
-            public static final PacketType SET_COMMAND_MINECART =         new PacketType(PROTOCOL, SENDER, 0x36, "SetCommandMinecart");
-            public static final PacketType SET_CREATIVE_SLOT =            new PacketType(PROTOCOL, SENDER, 0x37, "SetCreativeModeSlot", "SetCreativeSlot", "CPacketCreativeInventoryAction");
-            public static final PacketType SET_JIGSAW =                   new PacketType(PROTOCOL, SENDER, 0x38, "SetJigsawBlock", "SetJigsaw");
-            public static final PacketType STRUCT =                       new PacketType(PROTOCOL, SENDER, 0x39, "SetStructureBlock", "Struct");
-            public static final PacketType SET_TEST_BLOCK =               new PacketType(PROTOCOL, SENDER, 0x3A, "SetTestBlock");
-            public static final PacketType UPDATE_SIGN =                  new PacketType(PROTOCOL, SENDER, 0x3B, "SignUpdate", "UpdateSign", "CPacketUpdateSign");
-            public static final PacketType ARM_ANIMATION =                new PacketType(PROTOCOL, SENDER, 0x3C, "Swing", "ArmAnimation", "CPacketAnimation");
-            public static final PacketType SPECTATE =                     new PacketType(PROTOCOL, SENDER, 0x3D, "TeleportToEntity", "Spectate", "CPacketSpectate");
-            public static final PacketType TEST_INSTANCE_BLOCK_ACTION =   new PacketType(PROTOCOL, SENDER, 0x3E, "TestInstanceBlockAction");
-            public static final PacketType USE_ITEM_ON =                  new PacketType(PROTOCOL, SENDER, 0x3F, "UseItemOn", "BlockPlace", "CPacketPlayerTryUseItemOnBlock");
-            public static final PacketType USE_ITEM =                     new PacketType(PROTOCOL, SENDER, 0x40, "UseItem", "CPacketPlayerTryUseItem");
-            public static final PacketType CUSTOM_CLICK_ACTION =          new PacketType(PROTOCOL, SENDER, 0x41, "CustomClickAction");
+            public static final PacketType ATTACK =                       new PacketType(PROTOCOL, SENDER, 0x01, "Attack");
+            public static final PacketType TILE_NBT_QUERY =               new PacketType(PROTOCOL, SENDER, 0x02, "BlockEntityTagQuery", "TileNBTQuery");
+            public static final PacketType SELECT_BUNDLE_ITEM =           new PacketType(PROTOCOL, SENDER, 0x03, "SelectBundleItem");
+            public static final PacketType DIFFICULTY_CHANGE =            new PacketType(PROTOCOL, SENDER, 0x04, "ChangeDifficulty", "DifficultyChange");
+            public static final PacketType CHANGE_GAME_MODE =             new PacketType(PROTOCOL, SENDER, 0x05, "ChangeGameMode");
+            public static final PacketType CHAT_ACK =                     new PacketType(PROTOCOL, SENDER, 0x06, "ChatAck");
+            public static final PacketType CHAT_COMMAND =                 new PacketType(PROTOCOL, SENDER, 0x07, "ChatCommand");
+            public static final PacketType CHAT_COMMAND_SIGNED =          new PacketType(PROTOCOL, SENDER, 0x08, "ChatCommandSigned");
+            public static final PacketType CHAT =                         new PacketType(PROTOCOL, SENDER, 0x09, "Chat", "CPacketChatMessage");
+            public static final PacketType CHAT_SESSION_UPDATE =          new PacketType(PROTOCOL, SENDER, 0x0A, "ChatSessionUpdate");
+            public static final PacketType CHUNK_BATCH_RECEIVED =         new PacketType(PROTOCOL, SENDER, 0x0B, "ChunkBatchReceived");
+            public static final PacketType CLIENT_COMMAND =               new PacketType(PROTOCOL, SENDER, 0x0C, "ClientCommand", "CPacketClientStatus");
+            public static final PacketType CLIENT_TICK_END =              new PacketType(PROTOCOL, SENDER, 0x0D, "ClientTickEnd");
+            public static final PacketType SETTINGS =                     new PacketType(PROTOCOL, SENDER, 0x0E, "ClientInformation", "Settings", "CPacketClientSettings");
+            public static final PacketType TAB_COMPLETE =                 new PacketType(PROTOCOL, SENDER, 0x0F, "CommandSuggestion", "TabComplete", "CPacketTabComplete");
+            public static final PacketType CONFIGURATION_ACK =            new PacketType(PROTOCOL, SENDER, 0x10, "ConfigurationAcknowledged");
+            public static final PacketType ENCHANT_ITEM =                 new PacketType(PROTOCOL, SENDER, 0x11, "ContainerButtonClick", "EnchantItem", "CPacketEnchantItem");
+            public static final PacketType WINDOW_CLICK =                 new PacketType(PROTOCOL, SENDER, 0x12, "ContainerClick", "WindowClick", "CPacketClickWindow");
+            public static final PacketType CLOSE_WINDOW =                 new PacketType(PROTOCOL, SENDER, 0x13, "ContainerClose", "CloseWindow", "CPacketCloseWindow");
+            public static final PacketType CONTAINER_SLOT_STATE_CHANGED = new PacketType(PROTOCOL, SENDER, 0x14, "ContainerSlotStateChanged", "ContainerSlotStateChangedPacket");
+            public static final PacketType COOKIE_RESPONSE =              new PacketType(PROTOCOL, SENDER, 0x15, "CookieResponse");
+            public static final PacketType CUSTOM_PAYLOAD =               new PacketType(PROTOCOL, SENDER, 0x16, "CustomPayload", "CPacketCustomPayload");
+            public static final PacketType DEBUG_SUBSCRIPTION_REQUEST =   new PacketType(PROTOCOL, SENDER, 0x17, "DebugSubscriptionRequest");
+            public static final PacketType B_EDIT =                       new PacketType(PROTOCOL, SENDER, 0x18, "EditBook", "BEdit");
+            public static final PacketType ENTITY_NBT_QUERY =             new PacketType(PROTOCOL, SENDER, 0x19, "EntityTagQuery", "EntityNBTQuery");
+            public static final PacketType USE_ENTITY =                   new PacketType(PROTOCOL, SENDER, 0x1A, "Interact", "UseEntity", "CPacketUseEntity");
+            public static final PacketType JIGSAW_GENERATE =              new PacketType(PROTOCOL, SENDER, 0x1B, "JigsawGenerate");
+            public static final PacketType KEEP_ALIVE =                   new PacketType(PROTOCOL, SENDER, 0x1C, "KeepAlive", "CPacketKeepAlive");
+            public static final PacketType DIFFICULTY_LOCK =              new PacketType(PROTOCOL, SENDER, 0x1D, "LockDifficulty", "DifficultyLock");
+            public static final PacketType POSITION =                     new PacketType(PROTOCOL, SENDER, 0x1E, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$Pos", "Flying$Position", "Flying$PacketPlayInPosition", "CPacketPlayer$Position");
+            public static final PacketType POSITION_LOOK =                new PacketType(PROTOCOL, SENDER, 0x1F, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$PosRot", "Flying$PositionLook", "Flying$PacketPlayInPositionLook", "CPacketPlayer$PositionRotation");
+            public static final PacketType LOOK =                         new PacketType(PROTOCOL, SENDER, 0x20, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$Rot", "Flying$Look", "Flying$PacketPlayInLook", "CPacketPlayer$Rotation");
+            public static final PacketType GROUND =                       new PacketType(PROTOCOL, SENDER, 0x21, "net.minecraft.network.protocol.game.ServerboundMovePlayerPacket$StatusOnly", "Flying$d");
+            public static final PacketType VEHICLE_MOVE =                 new PacketType(PROTOCOL, SENDER, 0x22, "MoveVehicle", "VehicleMove", "CPacketVehicleMove");
+            public static final PacketType BOAT_MOVE =                    new PacketType(PROTOCOL, SENDER, 0x23, "PaddleBoat", "BoatMove", "CPacketSteerBoat");
+            public static final PacketType PICK_ITEM_FROM_BLOCK =         new PacketType(PROTOCOL, SENDER, 0x24, "PickItemFromBlock");
+            public static final PacketType PICK_ITEM =                    new PacketType(PROTOCOL, SENDER, 0x25, "PickItemFromEntity", "PickItem");
+            public static final PacketType PING_REQUEST =                 new PacketType(PROTOCOL, SENDER, 0x26, "PingRequest");
+            public static final PacketType AUTO_RECIPE =                  new PacketType(PROTOCOL, SENDER, 0x27, "PlaceRecipe", "AutoRecipe", "CPacketPlaceRecipe");
+            public static final PacketType ABILITIES =                    new PacketType(PROTOCOL, SENDER, 0x28, "PlayerAbilities", "Abilities", "CPacketPlayerAbilities");
+            public static final PacketType BLOCK_DIG =                    new PacketType(PROTOCOL, SENDER, 0x29, "PlayerAction", "BlockDig", "CPacketPlayerDigging");
+            public static final PacketType ENTITY_ACTION =                new PacketType(PROTOCOL, SENDER, 0x2A, "PlayerCommand", "EntityAction", "CPacketEntityAction");
+            public static final PacketType STEER_VEHICLE =                new PacketType(PROTOCOL, SENDER, 0x2B, "PlayerInput", "SteerVehicle", "CPacketInput");
+            public static final PacketType PLAYER_LOADED =                new PacketType(PROTOCOL, SENDER, 0x2C, "PlayerLoaded");
+            public static final PacketType PONG =                         new PacketType(PROTOCOL, SENDER, 0x2D, "Pong");
+            public static final PacketType PUNCH =                        new PacketType(PROTOCOL, SENDER, 0x2E, MinecraftVersion.v26_3, "Punch");
+            public static final PacketType RECIPE_SETTINGS =              new PacketType(PROTOCOL, SENDER, 0x2F, MinecraftVersion.v26_3, "RecipeBookChangeSettings", "RecipeSettings");
+            public static final PacketType RECIPE_DISPLAYED =             new PacketType(PROTOCOL, SENDER, 0x30, MinecraftVersion.v26_3, "RecipeBookSeenRecipe", "RecipeDisplayed", "CPacketRecipeInfo");
+            public static final PacketType ITEM_NAME =                    new PacketType(PROTOCOL, SENDER, 0x31, MinecraftVersion.v26_3, "RenameItem", "ItemName");
+            public static final PacketType RESOURCE_PACK_STATUS =         new PacketType(PROTOCOL, SENDER, 0x32, MinecraftVersion.v26_3, "ResourcePack", "ResourcePackStatus", "CPacketResourcePackStatus");
+            public static final PacketType ADVANCEMENTS =                 new PacketType(PROTOCOL, SENDER, 0x33, MinecraftVersion.v26_3, "SeenAdvancements", "Advancements", "CPacketSeenAdvancements");
+            public static final PacketType TR_SEL =                       new PacketType(PROTOCOL, SENDER, 0x34, MinecraftVersion.v26_3, "SelectTrade", "TrSel");
+            public static final PacketType BEACON =                       new PacketType(PROTOCOL, SENDER, 0x35, MinecraftVersion.v26_3, "SetBeacon", "Beacon");
+            public static final PacketType HELD_ITEM_SLOT =               new PacketType(PROTOCOL, SENDER, 0x36, MinecraftVersion.v26_3, "SetCarriedItem", "HeldItemSlot", "CPacketHeldItemChange");
+            public static final PacketType SET_COMMAND_BLOCK =            new PacketType(PROTOCOL, SENDER, 0x37, MinecraftVersion.v26_3, "SetCommandBlock");
+            public static final PacketType SET_COMMAND_MINECART =         new PacketType(PROTOCOL, SENDER, 0x38, MinecraftVersion.v26_3, "SetCommandMinecart");
+            public static final PacketType SET_CREATIVE_SLOT =            new PacketType(PROTOCOL, SENDER, 0x39, MinecraftVersion.v26_3, "SetCreativeModeSlot", "SetCreativeSlot", "CPacketCreativeInventoryAction");
+            public static final PacketType SET_GAME_RULE =                new PacketType(PROTOCOL, SENDER, 0x3A, MinecraftVersion.v26_3, "SetGameRule");
+            public static final PacketType SET_JIGSAW =                   new PacketType(PROTOCOL, SENDER, 0x3B, MinecraftVersion.v26_3, "SetJigsawBlock", "SetJigsaw");
+            public static final PacketType STRUCT =                       new PacketType(PROTOCOL, SENDER, 0x3C, MinecraftVersion.v26_3, "SetStructureBlock", "Struct");
+            public static final PacketType SET_TEST_BLOCK =               new PacketType(PROTOCOL, SENDER, 0x3D, MinecraftVersion.v26_3, "SetTestBlock");
+            public static final PacketType UPDATE_SIGN =                  new PacketType(PROTOCOL, SENDER, 0x3E, MinecraftVersion.v26_3, "SignUpdate", "UpdateSign", "CPacketUpdateSign");
+            public static final PacketType SPECTATE_ENTITY =              new PacketType(PROTOCOL, SENDER, 0x3F, MinecraftVersion.v26_3, "SpectatorAction", "SpectateEntity");
+            public static final PacketType SPECTATE =                     new PacketType(PROTOCOL, SENDER, 0x40, "TeleportToEntity", "Spectate", "CPacketSpectate");
+            public static final PacketType TEST_INSTANCE_BLOCK_ACTION =   new PacketType(PROTOCOL, SENDER, 0x41, "TestInstanceBlockAction");
+            public static final PacketType USE_ITEM_ON =                  new PacketType(PROTOCOL, SENDER, 0x42, "UseItemOn", "BlockPlace", "CPacketPlayerTryUseItemOnBlock");
+            public static final PacketType USE_ITEM =                     new PacketType(PROTOCOL, SENDER, 0x43, "UseItem", "CPacketPlayerTryUseItem");
+            public static final PacketType CUSTOM_CLICK_ACTION =          new PacketType(PROTOCOL, SENDER, 0x44, "CustomClickAction");
 
             /**
              * @deprecated Removed in 1.17
@@ -523,6 +535,18 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
             @Deprecated
             public static final PacketType CHAT_PREVIEW =                 new PacketType(PROTOCOL, SENDER, 253, "ChatPreview");
 
+            /**
+             * deprecated Removed in 1.21.9
+             */
+            @Deprecated
+            public static final PacketType DEBUG_SAMPLE_SUBSCRIPTION =    new PacketType(PROTOCOL, SENDER, 0x16, "DebugSampleSubscription");
+
+            /**
+             * @deprecated Removed in 26.3
+             */
+            @Deprecated
+            public static final PacketType ARM_ANIMATION =                new PacketType(PROTOCOL, SENDER, 252, "Swing", "ArmAnimation", "CPacketAnimation");
+
             /**
              * @deprecated Renamed to USE_ITEM_ON
              */
@@ -704,15 +728,17 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
             public static final PacketType REGISTRY_DATA =                new PacketType(PROTOCOL, SENDER, 0x07, "RegistryData");
             public static final PacketType REMOVE_RESOURCE_PACK =         new PacketType(PROTOCOL, SENDER, 0x08, "ResourcePackPop");
             public static final PacketType ADD_RESOURCE_PACK =            new PacketType(PROTOCOL, SENDER, 0x09, "ResourcePackPush");
-            public static final PacketType STORE_COOKIE =                 new PacketType(PROTOCOL, SENDER, 0x0A, "StoreCookie");
-            public static final PacketType TRANSFER =                     new PacketType(PROTOCOL, SENDER, 0x0B, "Transfer");
-            public static final PacketType UPDATE_ENABLED_FEATURES =      new PacketType(PROTOCOL, SENDER, 0x0C, "UpdateEnabledFeatures");
-            public static final PacketType UPDATE_TAGS =                  new PacketType(PROTOCOL, SENDER, 0x0D, "UpdateTags");
-            public static final PacketType SELECT_KNOWN_PACKS =           new PacketType(PROTOCOL, SENDER, 0x0E, "ClientboundSelectKnownPacks");
-            public static final PacketType REPORT_DETAILS =               new PacketType(PROTOCOL, SENDER, 0x0F, "CustomReportDetails");
-            public static final PacketType SERVER_LINKS =                 new PacketType(PROTOCOL, SENDER, 0x10, "ServerLinks");
-            public static final PacketType CLEAR_DIALOG =                 new PacketType(PROTOCOL, SENDER, 0x11, "ClearDialog");
-            public static final PacketType SHOW_DIALOG =                  new PacketType(PROTOCOL, SENDER, 0x12, "ShowDialog");
+            public static final PacketType POST_EFFECTS =                 new PacketType(PROTOCOL, SENDER, 0x0A, "PostEffects");
+            public static final PacketType STORE_COOKIE =                 new PacketType(PROTOCOL, SENDER, 0x0B, "StoreCookie");
+            public static final PacketType TRANSFER =                     new PacketType(PROTOCOL, SENDER, 0x0C, "Transfer");
+            public static final PacketType UPDATE_ENABLED_FEATURES =      new PacketType(PROTOCOL, SENDER, 0x0D, "UpdateEnabledFeatures");
+            public static final PacketType UPDATE_TAGS =                  new PacketType(PROTOCOL, SENDER, 0x0E, "UpdateTags");
+            public static final PacketType SELECT_KNOWN_PACKS =           new PacketType(PROTOCOL, SENDER, 0x0F, "ClientboundSelectKnownPacks");
+            public static final PacketType REPORT_DETAILS =               new PacketType(PROTOCOL, SENDER, 0x10, "CustomReportDetails");
+            public static final PacketType SERVER_LINKS =                 new PacketType(PROTOCOL, SENDER, 0x11, "ServerLinks");
+            public static final PacketType CLEAR_DIALOG =                 new PacketType(PROTOCOL, SENDER, 0x12, "ClearDialog");
+            public static final PacketType SHOW_DIALOG =                  new PacketType(PROTOCOL, SENDER, 0x13, "ShowDialog");
+            public static final PacketType CODE_OF_CONDUCT =              new PacketType(PROTOCOL, SENDER, 0x14, "CodeOfConduct");
 
             /**
              * @deprecated Removed in 1.20.4: replaced with new packets for removing and sending resource packs
@@ -745,6 +771,7 @@ public class PacketType implements Serializable, Cloneable, Comparable<PacketTyp
             public static final PacketType RESOURCE_PACK_ACK =            new PacketType(PROTOCOL, SENDER, 0x06, "ResourcePack");
             public static final PacketType SELECT_KNOWN_PACKS =           new PacketType(PROTOCOL, SENDER, 0x07, "ServerboundSelectKnownPacks");
             public static final PacketType CUSTOM_CLICK_ACTION =          new PacketType(PROTOCOL, SENDER, 0x08, "CustomClickAction");
+            public static final PacketType ACCEPT_CODE_OF_CONDUCT =       new PacketType(PROTOCOL, SENDER, 0x09, "AcceptCodeOfConduct");
 
             private static final Client INSTANCE = new Client();
 

src/main/java/com/comphenix/protocol/PaperLoginListener.java

@@ -1,57 +0,0 @@
-package com.comphenix.protocol;
-
-import java.lang.reflect.Field;
-import java.util.logging.Level;
-
-import com.comphenix.protocol.injector.PacketFilterManager;
-import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.FieldAccessor;
-import com.comphenix.protocol.utility.MinecraftReflection;
-
-import io.netty.channel.Channel;
-import io.papermc.paper.connection.PlayerConnection;
-import io.papermc.paper.connection.ReadablePlayerCookieConnectionImpl;
-import io.papermc.paper.event.connection.PlayerConnectionValidateLoginEvent;
-import org.bukkit.event.EventHandler;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-
-class PaperLoginListener implements Listener {
-    private final PacketFilterManager manager;
-
-    PaperLoginListener(PacketFilterManager manager) {
-        this.manager = manager;
-    }
-
-    private static FieldAccessor networkManagerField;
-    private static FieldAccessor channelField;
-
-    @EventHandler(priority = EventPriority.LOWEST)
-    public void onPlayerConnectionValidateLogin(PlayerConnectionValidateLoginEvent event) {
-        try {
-            PlayerConnection connection = event.getConnection();
-            ProtocolLogger.log("onPlayerConnectionValidateLogin: " + connection.getAddress());
-
-            if (networkManagerField == null) {
-                FuzzyReflection fuzzy = FuzzyReflection.fromClass(ReadablePlayerCookieConnectionImpl.class, true);
-                Field field = fuzzy.getFieldByType("networkManager", MinecraftReflection.getNetworkManagerClass());
-                networkManagerField = Accessors.getFieldAccessor(field);
-            }
-
-            Object networkManager = networkManagerField.get(connection);
-
-            if (channelField == null) {
-                FuzzyReflection fuzzy = FuzzyReflection.fromObject(networkManager, true);
-                Field field = fuzzy.getFieldByType("channel", Channel.class);
-                channelField = Accessors.getFieldAccessor(field);
-            }
-
-            Channel channel = (Channel) channelField.get(networkManager);
-            manager.injectChannel(channel);
-            ProtocolLogger.log("Successfully injected channel " + channel);
-        } catch (Throwable ex) {
-            ProtocolLogger.log(Level.SEVERE, "Failed to inject channel", ex);
-        }
-    }
-}

src/main/java/com/comphenix/protocol/ProtocolLib.java

@@ -15,6 +15,26 @@
  */
 package com.comphenix.protocol;
 
+import com.comphenix.protocol.async.AsyncFilterManager;
+import com.comphenix.protocol.error.BasicErrorReporter;
+import com.comphenix.protocol.error.DelegatedErrorReporter;
+import com.comphenix.protocol.error.DetailedErrorReporter;
+import com.comphenix.protocol.error.ErrorReporter;
+import com.comphenix.protocol.error.Report;
+import com.comphenix.protocol.error.ReportType;
+import com.comphenix.protocol.injector.InternalManager;
+import com.comphenix.protocol.injector.PacketFilterManager;
+import com.comphenix.protocol.metrics.Statistics;
+import com.comphenix.protocol.scheduler.DefaultScheduler;
+import com.comphenix.protocol.scheduler.FoliaScheduler;
+import com.comphenix.protocol.scheduler.ProtocolScheduler;
+import com.comphenix.protocol.scheduler.Task;
+import com.comphenix.protocol.updater.Updater;
+import com.comphenix.protocol.updater.Updater.UpdateType;
+import com.comphenix.protocol.utility.*;
+import com.google.common.base.Splitter;
+import com.google.common.collect.Iterables;
+
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -27,38 +47,19 @@ import java.util.logging.Level;
 import java.util.logging.LogRecord;
 import java.util.logging.Logger;
 
-import com.comphenix.protocol.async.AsyncFilterManager;
-import com.comphenix.protocol.error.BasicErrorReporter;
-import com.comphenix.protocol.error.DelegatedErrorReporter;
-import com.comphenix.protocol.error.DetailedErrorReporter;
-import com.comphenix.protocol.error.ErrorReporter;
-import com.comphenix.protocol.error.Report;
-import com.comphenix.protocol.error.ReportType;
-import com.comphenix.protocol.injector.PacketFilterManager;
-import com.comphenix.protocol.metrics.Statistics;
-import com.comphenix.protocol.scheduler.DefaultScheduler;
-import com.comphenix.protocol.scheduler.FoliaScheduler;
-import com.comphenix.protocol.scheduler.ProtocolScheduler;
-import com.comphenix.protocol.scheduler.Task;
-import com.comphenix.protocol.updater.Updater;
-import com.comphenix.protocol.updater.Updater.UpdateType;
-import com.comphenix.protocol.utility.ByteBuddyFactory;
-import com.comphenix.protocol.utility.ChatExtensions;
-import com.comphenix.protocol.utility.MinecraftVersion;
-import com.comphenix.protocol.utility.Util;
-
-import com.google.common.base.Splitter;
-import com.google.common.collect.Iterables;
 import org.bukkit.Server;
+import org.bukkit.command.CommandExecutor;
 import org.bukkit.plugin.PluginManager;
 import org.bukkit.plugin.java.JavaPlugin;
 
+import com.comphenix.protocol.internal.PlatformProvider;
+
 /**
  * The main entry point for ProtocolLib.
  *
  * @author Kristian
  */
-public abstract class ProtocolLib extends JavaPlugin {
+public class ProtocolLib extends JavaPlugin {
     // Every possible error or warning report type
     public static final ReportType REPORT_CANNOT_DELETE_CONFIG = new ReportType(
             "Cannot delete old ProtocolLib configuration.");
@@ -91,8 +92,8 @@ public abstract class ProtocolLib extends JavaPlugin {
     // these fields are only existing once, we can make them static
     private static Logger logger;
     private static ProtocolConfig config;
-    protected static PacketFilterManager protocolManager;
-    protected static ErrorReporter reporter = new BasicErrorReporter();
+    private static InternalManager protocolManager;
+    private static ErrorReporter reporter = new BasicErrorReporter();
 
     private Statistics statistics;
 
@@ -210,7 +211,7 @@ public abstract class ProtocolLib extends JavaPlugin {
                         this.commandPacket = new CommandPacket(reporter, this, logger, this.commandFilter, protocolManager);
                         break;
                     case LOGGING:
-                        this.packetLogging = new PacketLogging(reporter, this, protocolManager);
+                        this.packetLogging = new PacketLogging(this, protocolManager);
                         break;
                 }
             } catch (OutOfMemoryError e) {
@@ -336,11 +337,7 @@ public abstract class ProtocolLib extends JavaPlugin {
             this.registerCommand(PacketLogging.NAME, this.packetLogging);
 
             // Player login and logout events
-            protocolManager.inject();
-
-            manager.registerEvents(new BukkitListener(protocolManager), this);
-
-            registerLoginListener();
+            protocolManager.registerEvents(manager, this);
 
             // Worker that ensures that async packets are eventually sent
             // It also performs the update check.
@@ -368,8 +365,6 @@ public abstract class ProtocolLib extends JavaPlugin {
         }
     }
 
-    abstract void registerLoginListener();
-
     // Used to check Minecraft version
     private MinecraftVersion verifyMinecraftVersion() {
         MinecraftVersion minimum = new MinecraftVersion(ProtocolLibrary.MINIMUM_MINECRAFT_VERSION);
@@ -443,7 +438,19 @@ public abstract class ProtocolLib extends JavaPlugin {
         }
     }
 
-    abstract void registerCommand(String name, CommandBase command);
+    private void registerCommand(String name, CommandExecutor executor) {
+        try {
+            // Ignore these - they must have printed an error already
+            if (executor == null) {
+                return;
+            }
+
+            PlatformProvider.get().registerCommand(this, name, executor);
+        } catch (RuntimeException e) {
+            reporter.reportWarning(this,
+                    Report.newBuilder(REPORT_CANNOT_REGISTER_COMMAND).messageParam(name, e.getMessage()).error(e));
+        }
+    }
 
     /**
      * Disable the current plugin.

src/main/java/com/comphenix/protocol/ProtocolLibPaper.java

@@ -1,19 +0,0 @@
-package com.comphenix.protocol;
-
-public final class ProtocolLibPaper extends ProtocolLib {
-
-    @Override
-    void registerLoginListener() {
-        try {
-            Class.forName("io.papermc.paper.event.connection.PlayerConnectionValidateLoginEvent");
-            getServer().getPluginManager().registerEvents(new com.comphenix.protocol.PaperLoginListener(protocolManager), this);
-        } catch (ClassNotFoundException ignored) {
-            getServer().getPluginManager().registerEvents(new LegacyLoginListener(protocolManager), this);
-        }
-    }
-
-    @Override
-    public void registerCommand(String name, CommandBase command) {
-        registerCommand(name, (stack, args) -> command.onCommand(stack.getSender(), args));
-    }
-}

src/main/java/com/comphenix/protocol/ProtocolLibSpigot.java

@@ -1,30 +0,0 @@
-package com.comphenix.protocol;
-
-import com.comphenix.protocol.error.Report;
-
-import org.bukkit.command.PluginCommand;
-
-public final class ProtocolLibSpigot extends ProtocolLib {
-    @Override
-    void registerLoginListener() {
-        getServer().getPluginManager().registerEvents(new LegacyLoginListener(protocolManager), this);
-    }
-
-    @Override
-    void registerCommand(String name, CommandBase command) {
-        try {
-            PluginCommand pluginCmd = this.getCommand(name);
-
-            // Try to load the command
-            if (pluginCmd != null) {
-                pluginCmd.setExecutor((sender, _c, _l, args) ->
-                    command.onCommand(sender, args));
-            } else {
-                throw new RuntimeException("plugin.yml might be corrupt.");
-            }
-        } catch (RuntimeException e) {
-            reporter.reportWarning(this,
-                Report.newBuilder(REPORT_CANNOT_REGISTER_COMMAND).messageParam(name, e.getMessage()).error(e));
-        }
-    }
-}

src/main/java/com/comphenix/protocol/ProtocolLibrary.java

@@ -18,7 +18,7 @@ import com.comphenix.protocol.error.BasicErrorReporter;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.scheduler.ProtocolScheduler;
 
-import com.comphenix.protocol.utility.Validate;
+import org.apache.commons.lang.Validate;
 import org.bukkit.plugin.Plugin;
 
 /**
@@ -35,12 +35,12 @@ public class ProtocolLibrary {
     /**
      * The maximum version ProtocolLib has been tested with.
      */
-    public static final String MAXIMUM_MINECRAFT_VERSION = "1.21.8";
+    public static final String MAXIMUM_MINECRAFT_VERSION = "26.3";
 
     /**
-     * The date (with ISO 8601 or YYYY-MM-DD) when the most recent version (1.21.8) was released.
+     * The date (with ISO 8601 or YYYY-MM-DD) when the most recent version (26.3) was released.
      */
-    public static final String MINECRAFT_LAST_RELEASE_DATE = "2025-07-17";
+    public static final String MINECRAFT_LAST_RELEASE_DATE = "2026-09-15";
 
     private static Plugin plugin;
     private static ProtocolConfig config;
@@ -48,8 +48,8 @@ public class ProtocolLibrary {
     private static ProtocolScheduler scheduler;
     private static ErrorReporter reporter = new BasicErrorReporter();
 
-    private static boolean updatesDisabled = false;
-    private static boolean initialized = false;
+    private static boolean updatesDisabled;
+    private static boolean initialized;
 
     protected static void init(Plugin plugin, ProtocolConfig config, ProtocolManager manager,
                                ProtocolScheduler scheduler, ErrorReporter reporter) {

src/main/java/com/comphenix/protocol/UpdateNotifyRunnable.java

@@ -0,0 +1,69 @@
+/**
+ *  ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
+ *  Copyright (C) 2012 Kristian S. Stangeland
+ *
+ *  This program is free software; you can redistribute it and/or modify it under the terms of the
+ *  GNU General Public License as published by the Free Software Foundation; either version 2 of
+ *  the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *  See the GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along with this program;
+ *  if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307 USA
+ */
+package com.comphenix.protocol;
+
+import org.bukkit.ChatColor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.plugin.Plugin;
+
+import com.comphenix.protocol.updater.Updater;
+
+/**
+ * Callback invoked on the main thread after an asynchronous update check completes.
+ * <p>
+ * Extracted as a top-level class (instead of an anonymous inner class) so that
+ * {@code PaperPluginClassLoader} can always resolve its {@code .class} entry when
+ * {@link org.bukkit.scheduler.BukkitScheduler#runTask} dispatches it back onto the
+ * main server thread — the same pattern used by {@code SpigotUpdateRunnable}.
+ */
+final class UpdateNotifyRunnable implements Runnable {
+
+    private final CommandSender sender;
+    private final boolean command;
+    private final Updater updater;
+    private final ProtocolConfig config;
+    private final Plugin plugin;
+    private final CommandProtocol owner;
+
+    UpdateNotifyRunnable(CommandSender sender, boolean command,
+                         Updater updater, ProtocolConfig config,
+                         Plugin plugin, CommandProtocol owner) {
+        this.sender = sender;
+        this.command = command;
+        this.updater = updater;
+        this.config = config;
+        this.plugin = plugin;
+        this.owner = owner;
+    }
+
+    @Override
+    public void run() {
+        if (command) {
+            sender.sendMessage(ChatColor.YELLOW + "[ProtocolLib] " + updater.getResult());
+            String remoteVersion = updater.getRemoteVersion();
+            if (remoteVersion != null) {
+                sender.sendMessage(ChatColor.YELLOW + "Remote version: " + remoteVersion);
+                sender.sendMessage(ChatColor.YELLOW + "Current version: " + plugin.getDescription().getVersion());
+            }
+        } else if (updater.shouldNotify() || config.isDebug()) {
+            sender.sendMessage(ChatColor.YELLOW + "[ProtocolLib] " + updater.getResult());
+        }
+
+        updater.removeListener(this);
+        owner.updateFinished();
+    }
+}

src/main/java/com/comphenix/protocol/async/AsyncFilterManager.java

@@ -27,6 +27,7 @@ import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.events.PacketListener;
 import com.comphenix.protocol.injector.collection.InboundPacketListenerSet;
 import com.comphenix.protocol.injector.collection.OutboundPacketListenerSet;
+import com.comphenix.protocol.injector.netty.Injector;
 import com.comphenix.protocol.scheduler.ProtocolScheduler;
 import com.google.common.base.Objects;
 import com.google.common.collect.ImmutableList;
@@ -274,7 +275,7 @@ public class AsyncFilterManager implements AsynchronousManager {
      * @return TRUE if we are, FALSE otherwise.
      */
     private boolean onMainThread() {
-        return Thread.currentThread().getId() == mainThread.getId();
+        return Thread.currentThread() == mainThread;
     }
     
     @Override
@@ -308,12 +309,10 @@ public class AsyncFilterManager implements AsynchronousManager {
 
         asyncMarker.setQueuedSendingIndex(asyncMarker.getNewSendingIndex());
 
-        // The player is only be null when they're logged out,
-        // so this should be a pretty safe check
-        Player player = syncPacket.getPlayer();
-        if (player != null) {
+        PacketSendingQueue sendingQueue = getSendingQueue(syncPacket);
+        if (sendingQueue != null) {
             // Start the process
-            getSendingQueue(syncPacket).enqueue(newEvent);
+            sendingQueue.enqueue(newEvent);
 
             // We know this is occurring on the main thread, so pass TRUE
             getProcessingQueue(syncPacket).enqueue(newEvent, true);
@@ -322,12 +321,12 @@ public class AsyncFilterManager implements AsynchronousManager {
 
     @Override
     public Set<PacketType> getReceivingTypes() {
-        return serverProcessingQueue.keySet();
+        return clientProcessingQueue.keySet();
     }
 
     @Override
     public Set<PacketType> getSendingTypes() {
-        return clientProcessingQueue.keySet();
+        return serverProcessingQueue.keySet();
     }
     
     /**
@@ -347,8 +346,8 @@ public class AsyncFilterManager implements AsynchronousManager {
      * Construct a asynchronous marker with all the default values.
      * @return Asynchronous marker.
      */
-    public AsyncMarker createAsyncMarker() {
-        return createAsyncMarker(AsyncMarker.DEFAULT_TIMEOUT_DELTA);
+    public AsyncMarker createAsyncMarker(Injector injector) {
+        return createAsyncMarker(injector, AsyncMarker.DEFAULT_TIMEOUT_DELTA);
     }
     
     /**
@@ -356,13 +355,13 @@ public class AsyncFilterManager implements AsynchronousManager {
      * @param timeoutDelta - how long (in ms) until the packet expire.
      * @return An async marker.
      */
-    public AsyncMarker createAsyncMarker(long timeoutDelta) {
-        return createAsyncMarker(timeoutDelta, currentSendingIndex.incrementAndGet());
+    public AsyncMarker createAsyncMarker(Injector injector, long timeoutDelta) {
+        return createAsyncMarker(injector, timeoutDelta, currentSendingIndex.incrementAndGet());
     }
     
     // Helper method
-    private AsyncMarker createAsyncMarker(long timeoutDelta, long sendingIndex) {
-        return new AsyncMarker(manager, sendingIndex, System.currentTimeMillis(), timeoutDelta);
+    private AsyncMarker createAsyncMarker(Injector injector, long timeoutDelta, long sendingIndex) {
+        return new AsyncMarker(injector, sendingIndex, System.currentTimeMillis(), timeoutDelta);
     }
     
     @Override

src/main/java/com/comphenix/protocol/async/AsyncListenerHandler.java

@@ -538,7 +538,7 @@ public class AsyncListenerHandler {
      */
     private void listenerLoop(int workerID) {
         // Danger, danger!
-        if (Thread.currentThread().getId() == mainThread.getId())
+        if (Thread.currentThread() == mainThread)
             throw new IllegalStateException("Do not call this method from the main thread.");
         if (cancelled)
             throw new IllegalStateException("Listener has been cancelled. Create a new listener instead.");

src/main/java/com/comphenix/protocol/async/AsyncMarker.java

@@ -23,14 +23,18 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 
 import com.comphenix.protocol.PacketStream;
 import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.ProtocolLibrary;
 import com.comphenix.protocol.ProtocolLogger;
 import com.comphenix.protocol.events.NetworkMarker;
 import com.comphenix.protocol.events.PacketEvent;
+import com.comphenix.protocol.injector.netty.Injector;
 import com.comphenix.protocol.reflect.FieldAccessException;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.utility.MinecraftReflection;
@@ -64,7 +68,7 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
     /**
      * The packet stream responsible for transmitting the packet when it's done processing.
      */
-    private transient PacketStream packetStream;
+    private final Injector injector;
 
     /**
      * Current list of async packet listeners.
@@ -86,7 +90,7 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
     private volatile boolean processed;
 
     // Whether or not the packet has been sent
-    private volatile boolean transmitted;
+    private final AtomicBoolean transmitted = new AtomicBoolean(false);
 
     // Whether or not the asynchronous processing itself should be cancelled
     private volatile boolean asyncCancelled;
@@ -109,11 +113,8 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
      * Create a container for asyncronous packets.
      * @param initialTime - the current time in milliseconds since 01.01.1970 00:00.
      */
-    AsyncMarker(PacketStream packetStream, long sendingIndex, long initialTime, long timeoutDelta) {
-        if (packetStream == null)
-            throw new IllegalArgumentException("packetStream cannot be NULL");
-
-        this.packetStream = packetStream;
+    AsyncMarker(Injector injector, long sendingIndex, long initialTime, long timeoutDelta) {
+        this.injector = Objects.requireNonNull(injector, "injector is nul");
 
         // Timeout
         this.initialTime = initialTime;
@@ -180,16 +181,18 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
      * Retrieve the packet stream responsible for transmitting this packet.
      * @return The packet stream.
      */
+    @Deprecated
     public PacketStream getPacketStream() {
-        return packetStream;
+        return ProtocolLibrary.getProtocolManager();
     }
 
     /**
      * Sets the output packet stream responsible for transmitting this packet.
      * @param packetStream - new output packet stream.
      */
+    @Deprecated
     public void setPacketStream(PacketStream packetStream) {
-        this.packetStream = packetStream;
+        // NOOP
     }
 
     /**
@@ -285,7 +288,7 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
      * @return TRUE if it has been sent before, FALSE otherwise.
      */
     public boolean isTransmitted() {
-        return transmitted;
+        return transmitted.get();
     }
 
     /**
@@ -383,13 +386,18 @@ public class AsyncMarker implements Serializable, Comparable<AsyncMarker> {
      * @throws IOException If the packet couldn't be sent.
      */
     void sendPacket(PacketEvent event) throws IOException {
-        if (event.isServerPacket()) {
-            packetStream.sendServerPacket(event.getPlayer(), event.getPacket(), NetworkMarker.getNetworkMarker(event), false);
-        } else {
-            packetStream.receiveClientPacket(event.getPlayer(), event.getPacket(), NetworkMarker.getNetworkMarker(event),
-                    false);
+        if (!this.transmitted.compareAndSet(false, true)) {
+            return;
+        }
+
+        Object handle = event.getPacket().getHandle();
+
+        if (event.isServerPacket()) {
+            NetworkMarker marker = NetworkMarker.getNetworkMarker(event);
+            this.injector.sendClientboundPacket(handle, marker, false);
+        } else {
+            this.injector.readServerboundPacket(handle);
         }
-        transmitted = true;
     }
 
     /**

src/main/java/com/comphenix/protocol/async/PlayerSendingHandler.java

@@ -134,14 +134,18 @@ class PlayerSendingHandler {
      * @return The server or client sending queue the packet belongs to.
      */
     public PacketSendingQueue getSendingQueue(PacketEvent packet, boolean createNew) {
-        QueueContainer queues = playerSendingQueues.get(packet.getPlayer());
+        Player player = packet.getPlayer();
+        if (player == null)
+            return null;
+
+        QueueContainer queues = playerSendingQueues.get(player);
         
         // Safe concurrent initialization
         if (queues == null && createNew) {
             final QueueContainer newContainer = new QueueContainer();
 
             // Attempt to map the queue
-            queues = playerSendingQueues.putIfAbsent(packet.getPlayer(), newContainer);
+            queues = playerSendingQueues.putIfAbsent(player, newContainer);
             
             if (queues == null) {
                 queues = newContainer;

src/main/java/com/comphenix/protocol/collections/IntegerMap.java

@@ -58,6 +58,8 @@ public class IntegerMap<T> {
      * @return The old associated value, or NULL.
      */
     public T remove(int key) {
+        if (key < 0 || key >= array.length) return null;
+
         T old = array[key];
         array[key] = null;
 

src/main/java/com/comphenix/protocol/concurrency/ConcurrentPlayerMap.java

@@ -190,7 +190,8 @@ public class ConcurrentPlayerMap<TValue> extends AbstractMap<Player, TValue> imp
         Preconditions.checkNotNull(player, "player cannot be null");
 
         Object key = keyMethod.apply(player);
-        
+        Preconditions.checkState(key != null, "Unable to derive a key for the player.");
+
         keyLookup.put(key, player);
         return key;
     }

src/main/java/com/comphenix/protocol/error/DetailedErrorReporter.java

@@ -30,17 +30,20 @@ import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import org.apache.commons.lang.builder.ToStringBuilder;
+import org.apache.commons.lang.builder.ToStringStyle;
+import org.bukkit.Bukkit;
+import org.bukkit.plugin.Plugin;
+
 import com.comphenix.protocol.ProtocolConfig;
 import com.comphenix.protocol.ProtocolLibrary;
+import com.comphenix.protocol.ProtocolLogger;
 import com.comphenix.protocol.collections.ExpireHashMap;
 import com.comphenix.protocol.error.Report.ReportBuilder;
 import com.comphenix.protocol.events.PacketAdapter;
 import com.comphenix.protocol.reflect.PrettyPrinter;
-
 import com.google.common.base.Preconditions;
 import com.google.common.primitives.Primitives;
-import org.bukkit.Bukkit;
-import org.bukkit.plugin.Plugin;
 
 /**
  * Internal class used to handle exceptions.
@@ -469,7 +472,7 @@ public class DetailedErrorReporter implements ErrorReporter {
         } if (isSimpleType(value) || value instanceof Class<?>) {
             return value.toString();
         } else {
-            /*try {
+            try {
                 if (!apacheCommonsMissing)
                     return ToStringBuilder.reflectionToString(value, ToStringStyle.MULTI_LINE_STYLE, false, null);
             } catch (LinkageError ex) {
@@ -480,7 +483,7 @@ public class DetailedErrorReporter implements ErrorReporter {
             } catch (Throwable ex) {
                 // Don't use the error logger to log errors in error logging (that could lead to infinite loops)
                 ProtocolLogger.log(Level.WARNING, "Cannot convert to a String with Apache: " + ex.getMessage());
-            }*/
+            }
             
             // Use our custom object printer instead
             try {

src/main/java/com/comphenix/protocol/events/AbstractStructure.java

@@ -10,8 +10,22 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
 import java.util.UUID;
+
 import javax.annotation.Nonnull;
 
+import org.apache.commons.lang.Validate;
+import org.bukkit.Material;
+import org.bukkit.Sound;
+import org.bukkit.World;
+import org.bukkit.WorldType;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.EntityType;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.MerchantRecipe;
+import org.bukkit.potion.PotionEffectType;
+import org.bukkit.util.Vector;
+import org.jetbrains.annotations.NotNull;
+
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.reflect.EquivalentConverter;
 import com.comphenix.protocol.reflect.StructureModifier;
@@ -41,6 +55,8 @@ import com.comphenix.protocol.wrappers.WrappedLevelChunkData;
 import com.comphenix.protocol.wrappers.WrappedMessageSignature;
 import com.comphenix.protocol.wrappers.WrappedNumberFormat;
 import com.comphenix.protocol.wrappers.WrappedParticle;
+import com.comphenix.protocol.wrappers.WrappedPositionMoveRotation;
+import com.comphenix.protocol.wrappers.WrappedPositionPath;
 import com.comphenix.protocol.wrappers.WrappedProfilePublicKey;
 import com.comphenix.protocol.wrappers.WrappedProfilePublicKey.WrappedProfileKeyData;
 import com.comphenix.protocol.wrappers.WrappedRegistrable;
@@ -50,24 +66,12 @@ import com.comphenix.protocol.wrappers.WrappedSaltedSignature;
 import com.comphenix.protocol.wrappers.WrappedServerPing;
 import com.comphenix.protocol.wrappers.WrappedStatistic;
 import com.comphenix.protocol.wrappers.WrappedTeamParameters;
+import com.comphenix.protocol.wrappers.WrappedVecDelta;
 import com.comphenix.protocol.wrappers.WrappedWatchableObject;
 import com.comphenix.protocol.wrappers.nbt.NbtBase;
 import com.comphenix.protocol.wrappers.nbt.NbtCompound;
 import com.comphenix.protocol.wrappers.nbt.NbtFactory;
-
 import com.google.common.base.Preconditions;
-import com.comphenix.protocol.utility.Validate;
-import org.bukkit.Material;
-import org.bukkit.Sound;
-import org.bukkit.World;
-import org.bukkit.WorldType;
-import org.bukkit.entity.Entity;
-import org.bukkit.entity.EntityType;
-import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.MerchantRecipe;
-import org.bukkit.potion.PotionEffectType;
-import org.bukkit.util.Vector;
-import org.jetbrains.annotations.NotNull;
 
 public abstract class AbstractStructure {
     protected transient Object handle;
@@ -596,9 +600,7 @@ public abstract class AbstractStructure {
      */
     public StructureModifier<List<PlayerInfoData>> getPlayerInfoDataLists() {
         // Convert to and from the ProtocolLib wrapper
-        return structureModifier.withType(
-                Collection.class,
-                BukkitConverters.getListConverter(PlayerInfoData.getConverter()));
+        return getLists(PlayerInfoData.getConverter());
     }
 
     /**
@@ -1164,9 +1166,35 @@ public abstract class AbstractStructure {
     }
 
     /**
+     * Since 26.3 the signature fields are optional, an absent signature is read and written as {@code null}.
+     *
      * @return read/writer structure direct access to unsalted signature data for example in chat message (since 1.19.3)
      */
     public StructureModifier<WrappedMessageSignature> getMessageSignatures() {
+        if (MinecraftVersion.v26_3.atOrAbove()) {
+            EquivalentConverter<WrappedMessageSignature> converter = BukkitConverters.getWrappedMessageSignatureConverter();
+            return structureModifier.withParamType(
+                    Optional.class,
+                    new EquivalentConverter<WrappedMessageSignature>() {
+                        @Override
+                        public Object getGeneric(WrappedMessageSignature specific) {
+                            return Optional.ofNullable(converter.getGeneric(specific));
+                        }
+
+                        @Override
+                        public WrappedMessageSignature getSpecific(Object generic) {
+                            return generic == null ? null : ((Optional<?>) generic).map(converter::getSpecific).orElse(null);
+                        }
+
+                        @Override
+                        public Class<WrappedMessageSignature> getSpecificType() {
+                            return WrappedMessageSignature.class;
+                        }
+                    },
+                    MinecraftReflection.getMessageSignatureClass()
+            );
+        }
+
         return structureModifier.withType(
                 MinecraftReflection.getMessageSignatureClass(),
                 BukkitConverters.getWrappedMessageSignatureConverter()
@@ -1296,6 +1324,48 @@ public abstract class AbstractStructure {
         ));
     }
 
+    /**
+     * Retrieve a read/write structure for {@link WrappedPositionMoveRotation} (available since Minecraft 1.21.2).
+     * <p>
+     * This is used in packets such as {@code ENTITY_TELEPORT} and {@code ENTITY_POSITION_SYNC} (before 26.3).
+     *
+     * @return A modifier for PositionMoveRotation fields.
+     */
+    public StructureModifier<WrappedPositionMoveRotation> getPositionMoveRotation() {
+        return structureModifier.withType(
+                MinecraftReflection.getPositionMoveRotationClass(),
+                WrappedPositionMoveRotation.getConverter()
+        );
+    }
+
+    /**
+     * Retrieve a read/write structure for {@link WrappedVecDelta} (available since Minecraft 26.3).
+     * <p>
+     * This is used in {@code REL_ENTITY_MOVE} and {@code REL_ENTITY_MOVE_LOOK}.
+     *
+     * @return A modifier for VecDelta fields.
+     */
+    public StructureModifier<WrappedVecDelta> getVecDeltas() {
+        return structureModifier.withType(
+                MinecraftReflection.getVecDeltaClass().orElse(void.class),
+                WrappedVecDelta.getConverter()
+        );
+    }
+
+    /**
+     * Retrieve a read/write structure for {@link WrappedPositionPath} (available since Minecraft 26.3).
+     * <p>
+     * This is used in {@code ENTITY_POSITION_SYNC}.
+     *
+     * @return A modifier for PositionPath fields.
+     */
+    public StructureModifier<WrappedPositionPath> getPositionPaths() {
+        return structureModifier.withType(
+                MinecraftReflection.getPositionPathClass().orElse(void.class),
+                WrappedPositionPath.getConverter()
+        );
+    }
+
     /**
      * Represents an equivalent converter for ItemStack arrays.
      * @author Kristian

src/main/java/com/comphenix/protocol/events/PacketAdapter.java

@@ -232,13 +232,13 @@ public abstract class PacketAdapter implements PacketListener {
     @Override
     public void onPacketReceiving(PacketEvent event) {
         // Lets prevent some bugs
-        throw new IllegalStateException("Override onPacketReceiving to get notifcations of received packets!");
+        throw new IllegalStateException("Override onPacketReceiving to get notifications of received packets!");
     }
 
     @Override
     public void onPacketSending(PacketEvent event) {
         // Lets prevent some bugs
-        throw new IllegalStateException("Override onPacketSending to get notifcations of sent packets!");
+        throw new IllegalStateException("Override onPacketSending to get notifications of sent packets!");
     }
 
     @Override

src/main/java/com/comphenix/protocol/events/PacketEvent.java

@@ -391,6 +391,8 @@ public class PacketEvent extends EventObject implements Cancellable {
      *     <li>getPlayer</li>
      *     <li>getAddress</li>
      *     <li>getServer</li>
+     *     <li>getName, after the login start packet</li>
+     *     <li>getUniqueId, when supplied by the login protocol</li>
      *     <li>chat</li>
      *     <li>sendMessage</li>
      *     <li>kickPlayer</li>

src/main/java/com/comphenix/protocol/events/PacketMetadata.java

@@ -23,7 +23,7 @@ import java.util.concurrent.TimeUnit;
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
 
-import com.comphenix.protocol.utility.Validate;
+import org.apache.commons.lang.Validate;
 
 /**
  * Stores and retrieves metadata for applicable packet objects.

src/main/java/com/comphenix/protocol/events/SerializedOfflinePlayer.java

@@ -22,8 +22,10 @@ import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
 import java.io.Serializable;
 import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
 import java.time.Duration;
 import java.time.Instant;
 import java.util.Date;
@@ -36,7 +38,6 @@ import com.comphenix.protocol.reflect.accessors.MethodAccessor;
 import com.comphenix.protocol.utility.ByteBuddyFactory;
 import com.comphenix.protocol.utility.Util;
 
-import io.papermc.paper.persistence.PersistentDataContainerView;
 import net.bytebuddy.description.ByteCodeElement;
 import net.bytebuddy.description.modifier.Visibility;
 import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
@@ -61,6 +62,7 @@ import org.bukkit.World;
 import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Player;
 import org.bukkit.profile.PlayerProfile;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -68,7 +70,7 @@ import org.jetbrains.annotations.Nullable;
  *
  * @author Kristian
  */
-class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
+class SerializedOfflinePlayer implements Serializable {
 
     /**
      * Generated by Eclipse.
@@ -122,22 +124,18 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
         }
     }
 
-    @Override
     public boolean isOp() {
         return operator;
     }
 
-    @Override
     public void setOp(boolean operator) {
         this.operator = operator;
     }
 
-    @Override
     public Map<String, Object> serialize() {
         throw new UnsupportedOperationException();
     }
 
-    @Override
     public Location getBedSpawnLocation() {
         return bedSpawnLocation;
     }
@@ -152,33 +150,14 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
         return lastSeen;
     }
 
-    @Override
     public Location getRespawnLocation() {
         return null;
     }
 
-    /**
-     * @param b
-     * @return
-     */
-    @Override
-    public @org.jspecify.annotations.Nullable Location getRespawnLocation(boolean b) {
-        return null;
-    }
-
-    @Override
     public Location getLocation() {
         return null;
     }
 
-    /**
-     * @return
-     */
-    @Override
-    public PersistentDataContainerView getPersistentDataContainer() {
-        return null;
-    }
-
     // TODO do we need to implement this?
 
     public void incrementStatistic(Statistic statistic) throws IllegalArgumentException {
@@ -238,45 +217,34 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
     public void setStatistic(Statistic statistic, EntityType entityType, int i) {
     }
 
-    @Override
     public Location getLastDeathLocation() {
         return null;
     }
 
-    @Override
     public long getFirstPlayed() {
         return firstPlayed;
     }
 
-    @Override
     public long getLastPlayed() {
         return lastPlayed;
     }
 
-    @Override
     public UUID getUniqueId() {
         return uuid;
     }
 
-    /**
-     * @return
-     */
-    @Override
-    public com.destroystokyo.paper.profile.PlayerProfile getPlayerProfile() {
+    public @NotNull PlayerProfile getPlayerProfile() {
         return null;
     }
 
-    @Override
     public String getName() {
         return name;
     }
 
-    @Override
     public boolean hasPlayedBefore() {
         return playedBefore;
     }
 
-    @Override
     public boolean isBanned() {
         return banned;
     }
@@ -303,25 +271,14 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
         this.banned = banned;
     }
 
-    @Override
     public boolean isOnline() {
         return online;
     }
 
-    /**
-     * @return
-     */
-    @Override
-    public boolean isConnected() {
-        return false;
-    }
-
-    @Override
     public boolean isWhitelisted() {
         return whitelisted;
     }
 
-    @Override
     public void setWhitelisted(boolean whitelisted) {
         this.whitelisted = whitelisted;
     }
@@ -358,7 +315,6 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
         }
     }
 
-    @Override
     public Player getPlayer() {
         try {
             // Try to get the real player underneath
@@ -377,7 +333,7 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
      */
     public Player getProxyPlayer() {
         try {
-            return (Player) proxyPlayerConstructor.newInstance(this);
+            return (Player) proxyPlayerConstructor.newInstance(this.createOfflinePlayerProxy());
         } catch (IllegalAccessException e) {
             throw new RuntimeException("Cannot access reflection.", e);
         } catch (InstantiationException e) {
@@ -387,6 +343,38 @@ class SerializedOfflinePlayer implements OfflinePlayer, Serializable {
         }
     }
 
+    private OfflinePlayer createOfflinePlayerProxy() {
+        return (OfflinePlayer) Proxy.newProxyInstance(
+                OfflinePlayer.class.getClassLoader(),
+                new Class<?>[]{OfflinePlayer.class},
+                (proxy, method, arguments) -> {
+                    if (method.getDeclaringClass() == Object.class) {
+                        return switch (method.getName()) {
+                            case "equals" -> proxy == arguments[0];
+                            case "hashCode" -> System.identityHashCode(proxy);
+                            case "toString" -> "SerializedOfflinePlayer[" + this.name + "]";
+                            default -> throw new UnsupportedOperationException("Unsupported Object method " + method);
+                        };
+                    }
+
+                    try {
+                        Method target = SerializedOfflinePlayer.class.getMethod(
+                                method.getName(),
+                                method.getParameterTypes());
+                        return target.invoke(this, arguments);
+                    } catch (NoSuchMethodException exception) {
+                        if (method.isDefault()) {
+                            return InvocationHandler.invokeDefault(proxy, method, arguments);
+                        }
+                        throw new UnsupportedOperationException(
+                                "The method " + method.getName() + " is not supported for offline players.",
+                                exception);
+                    } catch (InvocationTargetException exception) {
+                        throw exception.getCause();
+                    }
+                });
+    }
+
     private static Constructor<? extends Player> setupProxyPlayerConstructor() {
         final Method[] offlinePlayerMethods = OfflinePlayer.class.getMethods();
         final String[] methodNames = new String[offlinePlayerMethods.length];

src/main/java/com/comphenix/protocol/injector/EntityUtilities.java

@@ -39,7 +39,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
-import com.comphenix.protocol.utility.Validate;
+import org.apache.commons.lang.Validate;
 import org.bukkit.World;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;

src/main/java/com/comphenix/protocol/injector/InternalManager.java

@@ -1,6 +1,8 @@
 package com.comphenix.protocol.injector;
 
 import com.comphenix.protocol.ProtocolManager;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginManager;
 
 /**
  * Yields access to the internal hook configuration.
@@ -9,6 +11,14 @@ import com.comphenix.protocol.ProtocolManager;
  */
 public interface InternalManager extends ProtocolManager {
 
+    /**
+     * Register this protocol manager on Bukkit.
+     *
+     * @param manager - Bukkit plugin manager that provides player join/leave events.
+     * @param plugin  - the parent plugin.
+     */
+    void registerEvents(PluginManager manager, final Plugin plugin);
+
     /**
      * Called when ProtocolLib is closing.
      */

src/main/java/com/comphenix/protocol/injector/PacketFilterBuilder.java

@@ -1,12 +1,10 @@
 package com.comphenix.protocol.injector;
 
-import javax.annotation.Nonnull;
-
 import com.comphenix.protocol.ProtocolLib;
 import com.comphenix.protocol.async.AsyncFilterManager;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.utility.MinecraftVersion;
-
+import javax.annotation.Nonnull;
 import org.bukkit.Server;
 import org.bukkit.plugin.Plugin;
 
@@ -114,7 +112,7 @@ public class PacketFilterBuilder {
      *
      * @return A new packet filter manager.
      */
-    public PacketFilterManager build() {
+    public InternalManager build() {
         if (this.reporter == null) {
             throw new IllegalArgumentException("reporter cannot be NULL.");
         }

src/main/java/com/comphenix/protocol/injector/PacketFilterManager.java

@@ -8,6 +8,21 @@ import java.util.Objects;
 import java.util.Set;
 import java.util.logging.Level;
 
+import org.bukkit.Location;
+import org.bukkit.Server;
+import org.bukkit.World;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
+import org.bukkit.event.player.PlayerQuitEvent;
+import org.bukkit.event.server.PluginDisableEvent;
+import org.bukkit.plugin.Plugin;
+import org.bukkit.plugin.PluginManager;
+
 import com.comphenix.protocol.AsynchronousManager;
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.ProtocolLibrary;
@@ -28,19 +43,12 @@ import com.comphenix.protocol.injector.PluginVerifier.VerificationResult;
 import com.comphenix.protocol.injector.collection.InboundPacketListenerSet;
 import com.comphenix.protocol.injector.collection.OutboundPacketListenerSet;
 import com.comphenix.protocol.injector.collection.PacketListenerSet;
+import com.comphenix.protocol.injector.netty.Injector;
 import com.comphenix.protocol.injector.netty.WirePacket;
 import com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector;
 import com.comphenix.protocol.injector.packet.PacketRegistry;
 import com.comphenix.protocol.utility.MinecraftVersion;
-
 import com.google.common.collect.ImmutableSet;
-import io.netty.channel.Channel;
-import org.bukkit.Location;
-import org.bukkit.Server;
-import org.bukkit.World;
-import org.bukkit.entity.Entity;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
 
 public class PacketFilterManager implements ListenerManager, InternalManager {
 
@@ -144,29 +152,20 @@ public class PacketFilterManager implements ListenerManager, InternalManager {
 
     @Override
     public void sendServerPacket(Player receiver, PacketContainer packet, NetworkMarker marker, boolean filters) {
-        if (!this.closed) {
-            // if we skip the packet events later when actually writing into the pipeline we at least notify all
-            // monitor listeners before doing so - they will not be able to change the event tho
-            if (!filters) {
-                // ensure we are on the main thread if any listener requires that
-                if (this.hasMainThreadListener(packet.getType()) && !this.server.isPrimaryThread()) {
-                    NetworkMarker copy = marker; // okay fine
-                    ProtocolLibrary.getScheduler().scheduleSyncDelayedTask(
-                            () -> this.sendServerPacket(receiver, packet, copy, false), 1L);
-                    return;
-                }
-
-                // construct the event and post to all monitor listeners
+        if (this.closed) {
+            return;
+        }
+        
+        // A monitor listener should never modify a packet/event so we can simply invoke monitor listeners
+        // independently of our injector pipeline 
+        if (!filters) {
+            this.runMonitorListeners(packet, () -> {
                 PacketEvent event = PacketEvent.fromServer(this, packet, marker, receiver, false);
                 this.outboundListeners.invoke(event, ListenerPriority.MONITOR);
-
-                // update the marker of the event without accidentally constructing it
-                marker = NetworkMarker.getNetworkMarker(event);
-            }
-
-            // process outbound
-            this.networkManagerInjector.getInjector(receiver).sendClientboundPacket(packet.getHandle(), marker, filters);
+            });
         }
+
+        this.networkManagerInjector.getInjector(receiver).sendClientboundPacket(packet.getHandle(), marker, filters);
     }
 
     @Override
@@ -193,34 +192,40 @@ public class PacketFilterManager implements ListenerManager, InternalManager {
 
     @Override
     public void receiveClientPacket(Player sender, PacketContainer packet, NetworkMarker marker, boolean filters) {
-        if (!this.closed) {
-            // make sure we are on the main thread if any listener of the packet needs it
-            if (this.hasMainThreadListener(packet.getType()) && !this.server.isPrimaryThread()) {
-                ProtocolLibrary.getScheduler().runTask(
-                        () -> this.receiveClientPacket(sender, packet, marker, filters));
+        if (this.closed) {
+            return;
+        }
+
+        // make sure we are on the main thread if any listener of the packet needs it
+        if (filters && this.requiresMainThread(packet)) {
+            ProtocolLibrary.getScheduler().runTask(
+                    () -> this.receiveClientPacket(sender, packet, marker, filters));
+            return;
+        }
+
+        Object nmsPacket = packet.getHandle();
+
+        if (filters) {
+            PacketEvent event = PacketEvent.fromClient(this, packet, marker, sender, false);
+            this.invokeInboundPacketListeners(event);
+
+            if (event.isCancelled()) {
                 return;
             }
 
-            Object nmsPacket = packet.getHandle();
-            // check to which listeners we need to post the packet
-            if (filters) {
-                // post to all listeners
-            	PacketEvent event = PacketEvent.fromClient(this.networkManagerInjector, packet, null, sender);
-                this.invokeInboundPacketListeners(event);
-                if (event.isCancelled()) {
-                    return;
-                }
-
-                // prevent possible de-sync
-                nmsPacket = event.getPacket().getHandle();
-            } else {
+            // Prevent possible de-sync if the packet was replaced by a listener.
+            nmsPacket = event.getPacket().getHandle();
+        } else {
+            // A monitor listener should never modify a packet/event so we can simply invoke monitor listeners
+            // independently of our injector pipeline 
+            this.runMonitorListeners(packet, () -> {
                 PacketEvent event = PacketEvent.fromClient(this, packet, marker, sender, false);
                 this.inboundListeners.invoke(event, ListenerPriority.MONITOR);
-            }
-
-            // post to the player inject, reset our cancel state change
-            this.networkManagerInjector.getInjector(sender).readServerboundPacket(nmsPacket);
+            });
         }
+
+        // post to the player inject, reset our cancel state change
+        this.networkManagerInjector.getInjector(sender).readServerboundPacket(nmsPacket);
     }
 
     @Override
@@ -320,30 +325,24 @@ public class PacketFilterManager implements ListenerManager, InternalManager {
 
     @Override
     public void removePacketListener(PacketListener listener) {
-        if (this.closed || !this.registeredListeners.remove(listener)) {
-            return;
-        }
+        if (!this.closed && this.registeredListeners.remove(listener)) {
+            ListeningWhitelist outbound = listener.getSendingWhitelist();
+            ListeningWhitelist inbound = listener.getReceivingWhitelist();
 
-        ListeningWhitelist outbound = listener.getSendingWhitelist();
-        ListeningWhitelist inbound = listener.getReceivingWhitelist();
+            // remove outbound listeners (if any)
+            if (outbound != null && outbound.isEnabled()) {
+                this.outboundListeners.removeListener(listener);
+            }
 
-        // remove outbound listeners (if any)
-        if (outbound != null && outbound.isEnabled()) {
-            this.outboundListeners.removeListener(listener);
-        }
-
-        // remove inbound listeners (if any)
-        if (inbound != null && inbound.isEnabled()) {
-            this.inboundListeners.removeListener(listener);
+            // remove inbound listeners (if any)
+            if (inbound != null && inbound.isEnabled()) {
+                this.inboundListeners.removeListener(listener);
+            }
         }
     }
 
     @Override
     public void removePacketListeners(Plugin plugin) {
-        if (this.closed || this.plugin.equals(plugin)) {
-            return;
-        }
-
         for (PacketListener listener : this.getPacketListeners()) {
             if (Objects.equals(listener.getPlugin(), plugin)) {
                 this.removePacketListener(listener);
@@ -420,26 +419,46 @@ public class PacketFilterManager implements ListenerManager, InternalManager {
         }
     }
 
-    public void removePlayer(Player player) {
-        asyncFilterManager.removePlayer(player);
-    }
+    @Override
+    public void registerEvents(PluginManager manager, Plugin plugin) {
+        if (!this.closed && !this.injected) {
+            // prevent duplicate event registrations / injections
+            this.injected = true;
+            this.networkManagerInjector.inject();
 
-    public void injectPlayer(Player player) {
-        networkManagerInjector.getInjector(player).inject();
-    }
+            // Paper disables reconfiguration when any PlayerLoginEvent listener is registered.
+            if (!this.networkManagerInjector.isUsingPaperChannelInitializer()) {
+                manager.registerEvents(new Listener() {
 
-    public void injectChannel(Channel channel) {
-        networkManagerInjector.getInjector(channel).inject();
-    }
+                    @EventHandler(priority = EventPriority.LOWEST)
+                    public void handleLogin(PlayerLoginEvent event) {
+                        networkManagerInjector.getInjector(event.getPlayer()).inject();
+                    }
+                }, plugin);
+            }
 
-    public void inject() {
-        if (this.closed || this.injected) {
-            return;
+            // all listeners we need, this is a bit messy, but it makes the job correctly
+            manager.registerEvents(new Listener() {
+
+                @EventHandler(priority = EventPriority.LOWEST)
+                public void handleJoin(PlayerJoinEvent event) {
+                	networkManagerInjector.getInjector(event.getPlayer()).inject();
+                }
+
+                @EventHandler(priority = EventPriority.MONITOR)
+                public void handleQuit(PlayerQuitEvent event) {
+                    PacketFilterManager.this.asyncFilterManager.removePlayer(event.getPlayer());
+                }
+
+                @EventHandler(priority = EventPriority.MONITOR)
+                public void handlePluginUnload(PluginDisableEvent event) {
+                    // don't do this for our plugin!
+                    if (event.getPlugin() != PacketFilterManager.this.plugin) {
+                        PacketFilterManager.this.removePacketListeners(event.getPlugin());
+                    }
+                }
+            }, plugin);
         }
-
-        // prevent duplicate event registrations / injections
-        this.injected = true;
-        this.networkManagerInjector.inject();
     }
 
     @Override
@@ -501,12 +520,25 @@ public class PacketFilterManager implements ListenerManager, InternalManager {
             this.postPacketToListeners(this.outboundListeners, event, true);
         }
     }
+    
+    private boolean requiresMainThread(PacketContainer packet) {
+        return this.hasMainThreadListener(packet.getType()) && !this.server.isPrimaryThread();
+    }
+
+    private void runMonitorListeners(PacketContainer packet, Runnable notifyMonitor) {
+        if (this.requiresMainThread(packet)) {
+            ProtocolLibrary.getScheduler().runTask(notifyMonitor);
+        } else {
+            notifyMonitor.run();
+        }
+    }
 
     private void postPacketToListeners(PacketListenerSet listeners, PacketEvent event, boolean outbound) {
         try {
             // append async marker if any async listener for the packet was registered
             if (this.asyncFilterManager.hasAsynchronousListeners(event)) {
-                event.setAsyncMarker(this.asyncFilterManager.createAsyncMarker());
+                Injector injector = this.networkManagerInjector.getInjector(event.getPlayer());
+                event.setAsyncMarker(this.asyncFilterManager.createAsyncMarker(injector));
             }
 
             // post to sync listeners

src/main/java/com/comphenix/protocol/injector/StructureCache.java

@@ -35,6 +35,7 @@ import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.reflect.accessors.Accessors;
 import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
 import com.comphenix.protocol.reflect.accessors.FieldAccessor;
+import com.comphenix.protocol.reflect.cloning.ImmutableDetector;
 import com.comphenix.protocol.reflect.fuzzy.FuzzyFieldContract;
 import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
 import com.comphenix.protocol.reflect.instances.DefaultInstances;
@@ -82,15 +83,26 @@ public class StructureCache {
         return newInstance(packetClass);
     }
 
+    // determineBestCreator can re-enter this cache (legacy 1.8 packet registry), which
+    // ConcurrentHashMap.computeIfAbsent rejects on Java 9+, so use get/put instead.
+    private static Optional<Supplier<Object>> creatorFor(Class<?> clazz) {
+        Optional<Supplier<Object>> creator = CACHED_INSTANCE_CREATORS.get(clazz);
+        if (creator == null) {
+            creator = Optional.ofNullable(determineBestCreator(clazz));
+            Optional<Supplier<Object>> existing = CACHED_INSTANCE_CREATORS.putIfAbsent(clazz, creator);
+            if (existing != null) {
+                creator = existing;
+            }
+        }
+        return creator;
+    }
+
     public static boolean canCreateInstance(Class<?> clazz) {
-        Optional<Supplier<Object>> creator = CACHED_INSTANCE_CREATORS.computeIfAbsent(clazz, x ->
-            Optional.ofNullable(determineBestCreator(clazz)));
-        return creator.isPresent();
+        return creatorFor(clazz).isPresent();
     }
 
     public static Object newInstance(Class<?> clazz) {
-        Optional<Supplier<Object>> creator = CACHED_INSTANCE_CREATORS.computeIfAbsent(clazz, x ->
-            Optional.ofNullable(determineBestCreator(clazz)));
+        Optional<Supplier<Object>> creator = creatorFor(clazz);
         if (!creator.isPresent()) {
             throw new IllegalArgumentException("Cannot create instance of " + clazz);
         }
@@ -98,15 +110,21 @@ public class StructureCache {
     }
 
     static Supplier<Object> determineBestCreator(Class<?> clazz) {
-        // certain packets are singletons which can't really be created
-        if (MinecraftReflection.isPacketClass(clazz)) {
+        boolean packetClass = MinecraftReflection.isPacketClass(clazz);
+        boolean immutableClass = ImmutableDetector.isImmutable(clazz);
+
+        // Certain packets are singletons which can't really be created. Immutable classes may also expose multiple
+        // constant instances as an enum replacement, which should be reused instead of invoking their constructors.
+        if (packetClass || immutableClass) {
             FuzzyReflection fuzzy = FuzzyReflection.fromClass(clazz, false);
             List<Field> singletons = fuzzy.getFieldList(FuzzyFieldContract.newBuilder()
                 .typeExact(clazz)
                 .requireModifier(Modifier.STATIC)
                 .requireModifier(Modifier.PUBLIC)
                 .build());
-            if (singletons.size() == 1) {
+
+            // Preserve the existing packet singleton behavior.
+            if (packetClass && singletons.size() == 1) {
                 FieldAccessor accessor = Accessors.getFieldAccessor(singletons.get(0));
                 try {
                     accessor.get(null);
@@ -114,6 +132,23 @@ public class StructureCache {
                 } catch (Exception ignored) {
                 }
             }
+
+            if (immutableClass) {
+                for (Field singleton : singletons) {
+                    if (!Modifier.isFinal(singleton.getModifiers())) {
+                        continue;
+                    }
+
+                    FieldAccessor accessor = Accessors.getFieldAccessor(singleton);
+                    try {
+                        Object instance = accessor.get(null);
+                        if (instance != null) {
+                            return () -> instance;
+                        }
+                    } catch (Exception ignored) {
+                    }
+                }
+            }
         }
 
         try {
@@ -124,7 +159,10 @@ public class StructureCache {
         } catch (Exception ignored) {
         }
 
-        WrappedStreamCodec streamCodec = PacketRegistry.getStreamCodec(clazz);
+        // stream codecs only exist on 1.20.5+; on legacy versions asking the registry re-enters its own
+        // initialization (createOldRegister builds StructureModifiers, which land back here)
+        WrappedStreamCodec streamCodec = MinecraftVersion.v1_20_5.atOrAbove()
+            ? PacketRegistry.getStreamCodec(clazz) : null;
 
         // use the new stream codec for versions above 1.20.5 if possible
         if (streamCodec != null && tryInitTrickDataSerializer()) {
@@ -287,8 +325,8 @@ public class StructureCache {
 
         if (registryByteBuf.isPresent()) {
             ConstructorAccessor accessor = Accessors.getConstructorAccessor(FuzzyReflection.fromClass(serializerBase, true).getConstructor(FuzzyMethodContract.newBuilder()
-                    .parameterDerivedOf(ByteBuf.class)
-                    .parameterDerivedOf(MinecraftReflection.getRegistryAccessClass())
+                    .parameterExactType(ByteBuf.class)
+                    .parameterExactType(MinecraftReflection.getRegistryAccessClass())
                     .build()));
             TRICKED_DATA_SERIALIZER_BASE = (buf) -> accessor.invoke(buf, MinecraftRegistryAccess.get());
         } else {

src/main/java/com/comphenix/protocol/injector/collection/OutboundPacketListenerSet.java

@@ -13,6 +13,7 @@ import com.comphenix.protocol.events.ListeningWhitelist;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
 import com.comphenix.protocol.events.PacketListener;
+import com.comphenix.protocol.wrappers.Converters;
 
 public class OutboundPacketListenerSet extends PacketListenerSet {
 
@@ -31,38 +32,46 @@ public class OutboundPacketListenerSet extends PacketListenerSet {
 
         if (event.getPacketType() == PacketType.Play.Server.BUNDLE && !event.isCancelled()) {
             // unpack the bundle and invoke for each packet in the bundle
-            Iterable<PacketContainer> packets = event.getPacket().getPacketBundles().read(0);
-            List<PacketContainer> outPackets = new ArrayList<>();
-            for (PacketContainer subPacket : packets) {
-                // ignore null packets as the will throw an error in the packet encoder
-                if (subPacket == null) {
-                    continue;
+            List<PacketContainer> packets = Converters.toList(event.getPacket().getPacketBundles().read(0));
+            // lazily allocated when the first packet is removed or replaced
+            List<PacketContainer> outPackets = null;
+            for (int index = 0; index < packets.size(); index++) {
+                PacketContainer subPacket = packets.get(index);
+                PacketContainer packet = null;
+
+                if (subPacket != null) {
+                    PacketEvent subPacketEvent = PacketEvent.fromServer(this, subPacket, event.getNetworkMarker(),
+                            event.getPlayer(), event.isFiltered(), event);
+                    super.invoke(subPacketEvent, priorityFilter);
+
+                    if (!subPacketEvent.isCancelled()) {
+                        PacketContainer result = subPacketEvent.getPacket();
+                        if (result != null && result.getHandle() != null) {
+                            packet = result;
+                        }
+                    }
                 }
 
-                PacketEvent subPacketEvent = PacketEvent.fromServer(this, subPacket, event.getNetworkMarker(),
-                        event.getPlayer());
-                super.invoke(subPacketEvent, priorityFilter);
-
-                
-                // if the packet has been cancelled, the packet will not be add to the bundle
-                if (subPacketEvent.isCancelled()) {
-                    continue;
+                boolean changed = packet == null || packet.getHandle() != subPacket.getHandle();
+                if (outPackets == null && changed) {
+                    outPackets = new ArrayList<>(packets.size());
+                    outPackets.addAll(packets.subList(0, index));
                 }
-
-                PacketContainer packet = subPacketEvent.getPacket();
-                if (packet == null || packet.getHandle() == null) {
-                    // super.invoke() should prevent us from getting new null packet so we just ignore it here
-                    continue;
-                } else {
+                if (outPackets != null && packet != null) {
                     outPackets.add(packet);
                 }
             }
 
-            if (packets.iterator().hasNext()) {
-                event.getPacket().getPacketBundles().write(0, outPackets);
-            } else {
-                // cancel entire packet if each individual packet has been cancelled
-                event.setCancelled(true);
+            if (!event.isReadOnly() && outPackets != null) {
+                if (!outPackets.isEmpty()) {
+                    // the original bundle may be shared between multiple recipients
+                    PacketContainer bundle = event.getPacket().shallowClone();
+                    bundle.getPacketBundles().write(0, outPackets);
+                    event.setPacket(bundle);
+                } else {
+                    // cancel entire packet if each individual packet has been cancelled
+                    event.setCancelled(true);
+                }
             }
         }
     }

src/main/java/com/comphenix/protocol/injector/netty/Injector.java

@@ -1,13 +1,14 @@
 package com.comphenix.protocol.injector.netty;
 
 import java.net.SocketAddress;
+import java.util.UUID;
+
+import org.bukkit.entity.Player;
 
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.PacketType.Protocol;
 import com.comphenix.protocol.events.NetworkMarker;
 
-import org.bukkit.entity.Player;
-
 /**
  * Represents an injected client connection.
  *
@@ -67,6 +68,24 @@ public interface Injector {
      */
     Player getPlayer();
 
+    /**
+     * Retrieve the player name captured during login.
+     *
+     * @return The player name, or NULL if it is not known yet.
+     */
+    default String getPlayerName() {
+        return null;
+    }
+
+    /**
+     * Retrieve the player UUID captured during login.
+     *
+     * @return The player UUID, or NULL if it is not available.
+     */
+    default UUID getPlayerUniqueId() {
+        return null;
+    }
+
     /**
      * Set the current player instance.
      *
@@ -74,8 +93,6 @@ public interface Injector {
      */
     void setPlayer(Player player);
 
-    boolean hasValidPlayer();
-
     boolean isConnected();
 
     /**

src/main/java/com/comphenix/protocol/injector/netty/WirePacket.java

@@ -19,10 +19,13 @@ import static com.google.common.base.Preconditions.checkNotNull;
 
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.events.PacketContainer;
+import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.reflect.accessors.MethodAccessor;
 import com.comphenix.protocol.utility.MinecraftMethods;
 import com.comphenix.protocol.utility.MinecraftReflection;
+import com.comphenix.protocol.utility.MinecraftVersion;
 import com.comphenix.protocol.utility.StreamSerializer;
+import com.comphenix.protocol.wrappers.CustomPacketPayloadWrapper;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.util.ReferenceCountUtil;
@@ -81,6 +84,11 @@ public class WirePacket {
     public static byte[] bytesFromPacket(PacketContainer packet) {
         checkNotNull(packet, "packet cannot be null!");
 
+        // packets are written by their stream codec since 1.20.5
+        if (MinecraftVersion.v1_20_5.atOrAbove()) {
+            return bytesFromStreamCodec(packet);
+        }
+
         ByteBuf buffer = PacketContainer.createPacketBuffer();
         ByteBuf store = PacketContainer.createPacketBuffer();
 
@@ -107,6 +115,44 @@ public class WirePacket {
         return bytes;
     }
 
+    private static byte[] bytesFromStreamCodec(PacketContainer packet) {
+        // Spigot keeps the data of unknown custom payloads in a buffer and the codec reads from it,
+        // so the reader index is restored to keep the packet writable after this call
+        ByteBuf payloadData = getCustomPayloadData(packet);
+        int readerIndex = payloadData != null ? payloadData.readerIndex() : 0;
+
+        try {
+            ByteBuf buffer = (ByteBuf) packet.serializeToBuffer();
+            return StreamSerializer.getDefault().getBytesAndRelease(buffer);
+        } finally {
+            if (payloadData != null) {
+                payloadData.readerIndex(readerIndex);
+            }
+        }
+    }
+
+    private static ByteBuf getCustomPayloadData(PacketContainer packet) {
+        PacketType type = packet.getType();
+        if (type != PacketType.Play.Server.CUSTOM_PAYLOAD
+                && type != PacketType.Play.Client.CUSTOM_PAYLOAD
+                && type != PacketType.Configuration.Server.CUSTOM_PAYLOAD
+                && type != PacketType.Configuration.Client.CUSTOM_PAYLOAD) {
+            return null;
+        }
+
+        Object payload = packet.getModifier()
+                .withType(CustomPacketPayloadWrapper.getCustomPacketPayloadClass())
+                .readSafely(0);
+        if (payload == null) {
+            return null;
+        }
+
+        StructureModifier<ByteBuf> buffers = new StructureModifier<>(payload.getClass())
+                .withTarget(payload)
+                .withType(ByteBuf.class);
+        return buffers.readSafely(0);
+    }
+
     /**
      * Creates a WirePacket from an existing Minecraft packet
      *
@@ -118,6 +164,10 @@ public class WirePacket {
         checkNotNull(packet, "packet cannot be null!");
         checkArgument(MinecraftReflection.isPacketClass(packet), "packet must be a Minecraft packet");
 
+        if (MinecraftVersion.v1_20_5.atOrAbove()) {
+            return fromPacket(PacketContainer.fromPacket(packet));
+        }
+
         ByteBuf buffer = PacketContainer.createPacketBuffer();
 
         MethodAccessor write = MinecraftMethods.getPacketWriteByteBufMethod();

src/main/java/com/comphenix/protocol/injector/netty/channel/EmptyInjector.java

@@ -1,15 +1,15 @@
 package com.comphenix.protocol.injector.netty.channel;
 
 import java.net.SocketAddress;
+import java.util.UUID;
+
+import org.bukkit.entity.Player;
 
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.PacketType.Protocol;
 import com.comphenix.protocol.events.NetworkMarker;
 import com.comphenix.protocol.injector.netty.Injector;
 import com.comphenix.protocol.injector.netty.WirePacket;
-import com.comphenix.protocol.injector.temporary.TemporaryPlayer;
-
-import org.bukkit.entity.Player;
 
 final class EmptyInjector implements Injector {
 
@@ -69,13 +69,18 @@ final class EmptyInjector implements Injector {
     }
 
     @Override
-    public void setPlayer(Player player) {
-        this.player = player;
+    public String getPlayerName() {
+        return this.player != null ? this.player.getName() : null;
     }
 
     @Override
-    public boolean hasValidPlayer() {
-       return player != null && !(player instanceof TemporaryPlayer);
+    public UUID getPlayerUniqueId() {
+        return this.player != null ? this.player.getUniqueId() : null;
+    }
+
+    @Override
+    public void setPlayer(Player player) {
+        this.player = player;
     }
 
     @Override

src/main/java/com/comphenix/protocol/injector/netty/channel/InjectionFactory.java

@@ -16,9 +16,12 @@ package com.comphenix.protocol.injector.netty.channel;
 
 import java.util.Map.Entry;
 import java.util.concurrent.ConcurrentMap;
+
 import javax.annotation.Nonnull;
 
-import com.comphenix.protocol.ProtocolLogger;
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.injector.ListenerManager;
 import com.comphenix.protocol.injector.netty.Injector;
@@ -26,12 +29,10 @@ import com.comphenix.protocol.injector.temporary.TemporaryPlayerFactory;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.utility.MinecraftFields;
 import com.comphenix.protocol.utility.MinecraftReflection;
-
 import com.google.common.collect.MapMaker;
+
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelHandler;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
 
 /**
  * Represents an injector factory.
@@ -84,8 +85,12 @@ public class InjectionFactory {
 
         // try to get the injector using the player reference first
         Injector injector = this.playerLookup.get(player);
+        if (injector == null) {
+            injector = this.getTemporaryInjector(player);
+        }
+
+        // check if we found an injector
         if (injector != null && !injector.isClosed()) {
-            ProtocolLogger.log(player.getName() + " has a cached injector. Player valid: " + injector.hasValidPlayer());
             return injector;
         }
 
@@ -105,10 +110,7 @@ public class InjectionFactory {
                 this.playerLookup.remove(injector.getPlayer());
                 this.cacheInjector(player, injector);
                 // re-set the player of the injection
-                ProtocolLogger.log("Reusing existing injector and setting player to " + player.getName());
                 injector.setPlayer(player);
-            } else {
-                ProtocolLogger.log(player.getName() + "'s channel already has an injector. Player valid: " + injector.hasValidPlayer());
             }
         } else {
             // construct a new injector as it seems like we have none yet

src/main/java/com/comphenix/protocol/injector/netty/channel/NettyChannelInjector.java

@@ -4,13 +4,18 @@ import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.net.SocketAddress;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Set;
+import java.util.UUID;
 import java.util.WeakHashMap;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
 import com.comphenix.protocol.PacketType;
 import com.comphenix.protocol.PacketType.Protocol;
 import com.comphenix.protocol.ProtocolLibrary;
@@ -28,6 +33,7 @@ import com.comphenix.protocol.injector.netty.WirePacket;
 import com.comphenix.protocol.injector.packet.PacketRegistry;
 import com.comphenix.protocol.injector.temporary.TemporaryPlayer;
 import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.reflect.accessors.Accessors;
 import com.comphenix.protocol.reflect.accessors.FieldAccessor;
 import com.comphenix.protocol.reflect.fuzzy.FuzzyFieldContract;
@@ -41,8 +47,6 @@ import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.EventLoop;
 import io.netty.util.AttributeKey;
-import org.bukkit.Bukkit;
-import org.bukkit.entity.Player;
 
 public class NettyChannelInjector implements Injector {
 
@@ -99,6 +103,7 @@ public class NettyChannelInjector implements Injector {
 
     // information about the player belonging to this injector
     private String playerName;
+    private UUID playerUniqueId;
     private Player player;
 
     // lazy initialized fields, if we don't need them we don't bother about them
@@ -114,6 +119,10 @@ public class NettyChannelInjector implements Injector {
     ) {
         // bukkit stuff
         this.player = player;
+        if (player != null && !(player instanceof TemporaryPlayer)) {
+            this.playerName = player.getName();
+            this.playerUniqueId = player.getUniqueId();
+        }
 
         // protocol lib stuff
         this.errorReporter = errorReporter;
@@ -242,7 +251,7 @@ public class NettyChannelInjector implements Injector {
             this.uninject();
 
             // remove any outgoing references
-            this.channel.attr(INJECTOR).remove();
+            this.channel.attr(INJECTOR).set(null);
 
             // cleanup
             this.savedMarkers.clear();
@@ -349,8 +358,9 @@ public class NettyChannelInjector implements Injector {
 
         // check if the name of the player is already known to the injector
         if (this.playerName != null) {
-            this.player = Bukkit.getPlayerExact(this.playerName);
-            if (this.player != null) {
+            Player bukkitPlayer = Bukkit.getPlayerExact(this.playerName);
+            if (bukkitPlayer != null) {
+                this.player = bukkitPlayer;
                 this.injectionFactory.cacheInjector(this.player, this);
             }
         }
@@ -359,22 +369,28 @@ public class NettyChannelInjector implements Injector {
         return this.player;
     }
 
+    @Override
+    public String getPlayerName() {
+        return this.playerName;
+    }
+
+    @Override
+    public UUID getPlayerUniqueId() {
+        return this.playerUniqueId;
+    }
+
     @Override
     public void setPlayer(Player player) {
         this.injectionFactory.invalidate(this.player, this.playerName);
 
         this.player = player;
         this.playerName = player.getName();
+        this.playerUniqueId = player.getUniqueId();
 
         this.injectionFactory.cacheInjector(player, this);
         this.injectionFactory.cacheInjector(player.getName(), this);
     }
 
-    @Override
-    public boolean hasValidPlayer() {
-        return this.player != null && !(player instanceof TemporaryPlayer);
-    }
-
     @Override
     public boolean isConnected() {
         return this.channel.isActive();
@@ -424,14 +440,19 @@ public class NettyChannelInjector implements Injector {
         // process login packets for the player name
         if (packet.getType() == PacketType.Login.Client.START) {
             String username;
+            UUID uniqueId;
             if (MinecraftVersion.WILD_UPDATE.atOrAbove()) {
                 // 1.19 replaced the gameprofile with username and uuid field
                 username = packet.getStrings().readSafely(0);
+                uniqueId = readLoginUniqueId(packet);
             } else {
                 WrappedGameProfile profile = packet.getGameProfiles().readSafely(0);
                 username = profile != null ? profile.getName() : null;
+                uniqueId = profile != null ? profile.getUUID() : null;
             }
 
+            this.playerUniqueId = uniqueId;
+
             if (username != null) {
                 this.playerName = username;
                 this.injectionFactory.cacheInjector(username, this);
@@ -446,6 +467,22 @@ public class NettyChannelInjector implements Injector {
         }
     }
 
+    private static UUID readLoginUniqueId(PacketContainer packet) {
+        UUID uniqueId = packet.getUUIDs().readSafely(0);
+        if (uniqueId != null) {
+            return uniqueId;
+        }
+
+        StructureModifier<Optional> optionals = packet.getModifier().withType(Optional.class);
+        for (int i = 0; i < optionals.size(); i++) {
+            Optional<?> optional = optionals.readSafely(i);
+            if (optional != null && optional.orElse(null) instanceof UUID optionalUniqueId) {
+                return optionalUniqueId;
+            }
+        }
+        return null;
+    }
+
     private void processInboundInternal(ChannelHandlerContext ctx, PacketContainer packetContainer) {
         if (this.listenerManager.hasMainThreadListener(packetContainer.getType()) && !Bukkit.isPrimaryThread()) {
             // not on the main thread but we are required to be reschedule the packet on the
@@ -519,15 +556,16 @@ public class NettyChannelInjector implements Injector {
             return action;
         }
 
+        PacketContainer packetContainer = new PacketContainer(packetType, packet);
+
         // ensure that we are on the main thread if we need to
-        if (this.listenerManager.hasMainThreadListener(packetType) && !Bukkit.isPrimaryThread()) {
+        if (!Bukkit.isPrimaryThread() && hasMainThreadListener(this.listenerManager, protocol, packetContainer)) {
             // not on the main thread but we are required to be - re-schedule the packet on the main thread
-            ProtocolLibrary.getScheduler().runTask(() -> this.sendClientboundPacket(packet, null, true));
+            ProtocolLibrary.getScheduler().runTask(() -> this.sendClientboundPacket(packet, marker, true));
             return null;
         }
 
         // create event and invoke listeners
-        PacketContainer packetContainer = new PacketContainer(packetType, packet);
         PacketEvent event = PacketEvent.fromServer(this, packetContainer, marker, this.player);
         this.listenerManager.invokeOutboundPacketListeners(event);
 
@@ -557,6 +595,44 @@ public class NettyChannelInjector implements Injector {
         return null;
     }
 
+    /**
+     * Checks if a listener that must be called on the main thread is going to be invoked for the given outbound packet.
+     * The packets inside a bundle are posted to their listeners together with the bundle, so their listeners count for
+     * the bundle as well.
+     *
+     * @param listenerManager the listener manager holding the registered listeners.
+     * @param protocol        the current outbound protocol of the connection.
+     * @param packet          the outbound packet.
+     * @return true if the packet must be processed on the main thread, false otherwise.
+     */
+    static boolean hasMainThreadListener(ListenerManager listenerManager, Protocol protocol, PacketContainer packet) {
+        if (listenerManager.hasMainThreadListener(packet.getType())) {
+            return true;
+        }
+
+        if (packet.getType() != PacketType.Play.Server.BUNDLE) {
+            return false;
+        }
+
+        Iterable<?> subPackets = packet.getModifier().<Iterable<?>>withType(Iterable.class).readSafely(0);
+        if (subPackets == null) {
+            return false;
+        }
+
+        for (Object subPacket : subPackets) {
+            if (subPacket == null) {
+                continue;
+            }
+
+            PacketType subPacketType = PacketRegistry.getPacketType(protocol, subPacket.getClass());
+            if (subPacketType != null && listenerManager.hasMainThreadListener(subPacketType)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
     @SuppressWarnings("unchecked")
     private <T> T proxyAction(T action, PacketEvent event, NetworkMarker marker) {
         // hack - we only know that the given action is either a runnable or callable, but we need to work out which thing

src/main/java/com/comphenix/protocol/injector/netty/channel/NettyChannelProxy.java

@@ -5,6 +5,7 @@ import io.netty.buffer.ByteBufAllocator;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelId;
 import io.netty.channel.ChannelMetadata;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.ChannelProgressivePromise;
@@ -33,6 +34,11 @@ final class NettyChannelProxy implements Channel {
         this.injector = injector;
     }
 
+    @Override
+    public ChannelId id() {
+        return this.delegate.id();
+    }
+
     @Override
     public EventLoop eventLoop() {
         return this.eventLoop;
@@ -238,6 +244,11 @@ final class NettyChannelProxy implements Channel {
         return this.delegate.attr(key);
     }
 
+    @Override
+    public <T> boolean hasAttr(AttributeKey<T> attributeKey) {
+        return this.delegate.hasAttr(attributeKey);
+    }
+
     @Override
     public int compareTo(@NotNull Channel o) {
         return this.delegate.compareTo(o);

src/main/java/com/comphenix/protocol/injector/netty/channel/NettyEventLoopProxy.java

@@ -10,11 +10,13 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import java.util.function.Consumer;
 
+import io.netty.channel.AbstractEventLoop;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelPromise;
 import io.netty.channel.EventLoop;
 import io.netty.channel.EventLoopGroup;
+import io.netty.util.concurrent.AbstractEventExecutor;
 import io.netty.util.concurrent.EventExecutor;
 import io.netty.util.concurrent.Future;
 import io.netty.util.concurrent.ProgressivePromise;
@@ -25,7 +27,7 @@ import io.netty.util.concurrent.ScheduledFuture;
  * An abstract event loop implementation which delegates all calls to a given event loop, but proxies all calls which
  * schedule something on the event loop to methods which decide what should happen to the scheduled task.
  */
-final class NettyEventLoopProxy implements EventLoop {
+final class NettyEventLoopProxy extends AbstractEventLoop {
 
     private static final Callable<?> EMPTY_CALLABLE = () -> null;
     private static final Runnable EMPTY_RUNNABLE = () -> {
@@ -236,6 +238,15 @@ final class NettyEventLoopProxy implements EventLoop {
         }
     }
 
+    // ShreddedPaper uses this method
+    @Override
+    public void lazyExecute(Runnable command) {
+        Runnable proxied = this.proxyRunnable(command);
+        if (proxied != null) {
+            ((AbstractEventExecutor)this.delegate).lazyExecute(proxied);
+        }
+    }
+
     @Override
     public void forEach(Consumer<? super EventExecutor> action) {
         this.delegate.forEach(action);
@@ -251,6 +262,12 @@ final class NettyEventLoopProxy implements EventLoop {
         return this.delegate.register(channel);
     }
 
+    @Override
+    public ChannelFuture register(ChannelPromise channelPromise) {
+        return this.delegate.register(channelPromise);
+    }
+
+    @Deprecated
     @Override
     public ChannelFuture register(Channel channel, ChannelPromise promise) {
         return this.delegate.register(channel, promise);

src/main/java/com/comphenix/protocol/injector/netty/manager/NetworkManagerInjector.java

@@ -7,11 +7,15 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import org.bukkit.entity.Player;
+import org.bukkit.plugin.Plugin;
+
 import com.comphenix.protocol.ProtocolLogger;
 import com.comphenix.protocol.error.ErrorReporter;
 import com.comphenix.protocol.injector.ListenerManager;
 import com.comphenix.protocol.injector.netty.Injector;
 import com.comphenix.protocol.injector.netty.channel.InjectionFactory;
+import com.comphenix.protocol.internal.PlatformProvider;
 import com.comphenix.protocol.reflect.FuzzyReflection;
 import com.comphenix.protocol.reflect.accessors.Accessors;
 import com.comphenix.protocol.reflect.accessors.FieldAccessor;
@@ -22,8 +26,7 @@ import com.comphenix.protocol.wrappers.Pair;
 
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelFuture;
-import org.bukkit.entity.Player;
-import org.bukkit.plugin.Plugin;
+import io.netty.channel.ChannelHandler;
 
 public class NetworkManagerInjector {
 
@@ -36,7 +39,9 @@ public class NetworkManagerInjector {
     private final InjectionFactory injectionFactory;
 
     // netty handler
+    private final InjectionChannelInboundHandler injectionHandler;
     private final InjectionChannelInitializer pipelineInjectorHandler;
+    private Runnable paperChannelInitializerCleanup;
 
     // status of this injector
     private boolean closed = false;
@@ -47,18 +52,20 @@ public class NetworkManagerInjector {
         this.injectionFactory = new InjectionFactory(plugin, reporter, listenerManager);
 
         // hooking netty handlers
-        InjectionChannelInboundHandler injectionHandler = new InjectionChannelInboundHandler(
+        this.injectionHandler = new InjectionChannelInboundHandler(
                 this.errorReporter,
                 this.injectionFactory);
-        this.pipelineInjectorHandler = new InjectionChannelInitializer(INBOUND_INJECT_HANDLER_NAME, injectionHandler);
+        this.pipelineInjectorHandler = new InjectionChannelInitializer(
+                INBOUND_INJECT_HANDLER_NAME,
+                this.injectionHandler);
     }
 
     public Injector getInjector(Player player) {
     	return this.injectionFactory.fromPlayer(player);
     }
 
-    public Injector getInjector(Channel channel) {
-        return injectionFactory.fromChannel(channel);
+    public boolean isUsingPaperChannelInitializer() {
+        return this.paperChannelInitializerCleanup != null;
     }
 
     @SuppressWarnings("unchecked")
@@ -67,6 +74,13 @@ public class NetworkManagerInjector {
             return;
         }
 
+        PlatformProvider platformProvider = PlatformProvider.get();
+        if (platformProvider.hasEarlyChannelInitialization()) {
+            this.paperChannelInitializerCleanup = platformProvider.registerChannelInitializer(this::injectChannel);
+            this.injected = true;
+            return;
+        }
+
         // get all "server connections" defined in the minecraft server class
         FuzzyReflection server = FuzzyReflection.fromClass(MinecraftReflection.getMinecraftServerClass());
         List<Method> serverConnectionGetter = server.getMethodList(FuzzyMethodContract.newBuilder()
@@ -129,6 +143,23 @@ public class NetworkManagerInjector {
         this.injected = true;
     }
 
+    private void injectChannel(Channel channel) {
+        addInjectionHandler(channel, MinecraftReflection.getNetworkManagerClass(), this.injectionHandler);
+    }
+
+    static void addInjectionHandler(Channel channel, Class<?> networkManagerClass, ChannelHandler injectionHandler) {
+        for (String handlerName : channel.pipeline().names()) {
+            ChannelHandler handler = channel.pipeline().get(handlerName);
+            if (networkManagerClass.isInstance(handler)) {
+                channel.pipeline().addBefore(handlerName, INBOUND_INJECT_HANDLER_NAME, injectionHandler);
+                return;
+            }
+        }
+
+        // Preserve the existing behavior for forks with an unexpected pipeline layout.
+        channel.pipeline().addLast(INBOUND_INJECT_HANDLER_NAME, injectionHandler);
+    }
+
     public void close() {
         if (this.closed || !this.injected) {
             return;
@@ -157,6 +188,13 @@ public class NetworkManagerInjector {
 
         // clear up
         this.overriddenLists.clear();
-        this.injectionFactory.close();
+        try {
+            if (this.paperChannelInitializerCleanup != null) {
+                this.paperChannelInitializerCleanup.run();
+            }
+        } finally {
+            this.paperChannelInitializerCleanup = null;
+            this.injectionFactory.close();
+        }
     }
 }

src/main/java/com/comphenix/protocol/injector/packet/PacketRegistry.java

@@ -412,8 +412,8 @@ public class PacketRegistry {
     private static Class<?> searchForPacket(List<String> classNames) {
         for (String name : classNames) {
             try {
-                Class<?> clazz = MinecraftReflection.getMinecraftClass(name);
-                if (MinecraftReflection.getPacketClass().isAssignableFrom(clazz)
+                Class<?> clazz = resolvePacketClassName(name);
+                if (clazz != null && MinecraftReflection.getPacketClass().isAssignableFrom(clazz)
                         && !Modifier.isAbstract(clazz.getModifiers())) {
                     return clazz;
                 }
@@ -424,6 +424,22 @@ public class PacketRegistry {
         return null;
     }
 
+    /**
+     * Resolve a single packet class name. Fully-qualified names (those already containing their
+     * package, e.g. {@code net.minecraft.network.protocol.game.XPacket}) are loaded directly, since
+     * {@link MinecraftReflection#getMinecraftClass(String)} would otherwise prepend the Minecraft
+     * package and fail to find them. Relative names continue to be resolved against the Minecraft
+     * package.
+     */
+    private static Class<?> resolvePacketClassName(String name) {
+        Optional<Class<?>> direct = MinecraftReflection.getOptionalClass(name);
+        if (direct.isPresent()) {
+            return direct.get();
+        }
+
+        return MinecraftReflection.getMinecraftClass(name);
+    }
+
     /**
      * Retrieves the correct packet class from a given type.
      *

src/main/java/com/comphenix/protocol/injector/temporary/TemporaryPlayerFactory.java

@@ -19,6 +19,7 @@ package com.comphenix.protocol.injector.temporary;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
+import java.util.UUID;
 
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
@@ -132,7 +133,16 @@ public class TemporaryPlayerFactory {
                 if (methodName.equals("isOnline")) {
                     return injector.isConnected();
                 } else if (methodName.equals("getName")) {
+                    String playerName = injector.getPlayerName();
+                    if (playerName != null) {
+                        return playerName;
+                    }
                     return "UNKNOWN[" + injector.getAddress() + "]";
+                } else if (methodName.equals("getUniqueId")) {
+                    UUID playerUniqueId = injector.getPlayerUniqueId();
+                    if (playerUniqueId != null) {
+                        return playerUniqueId;
+                    }
                 }
 
                 // Ignore all other methods
@@ -184,14 +194,16 @@ public class TemporaryPlayerFactory {
      *   <li>getPlayer()</li>
      *   <li>getAddress()</li>
      *   <li>getServer()</li>
+     *   <li>getName()</li>
+     *   <li>getUniqueId(), when supplied by the login protocol</li>
      *   <li>chat(String)</li>
      *   <li>sendMessage(String)</li>
      *   <li>sendMessage(String[])</li>
      *   <li>kickPlayer(String)</li>
      * </ul>
      * <p>
-     * Note that a temporary player has not yet been assigned a name, and thus cannot be
-     * uniquely identified. Use the address instead.
+     * Before the login start packet is received, the player has no profile information
+     * and can only be identified by its address.
      *
      * @return A temporary player instance.
      */

src/main/java/com/comphenix/protocol/internal/PlatformProvider.java

@@ -0,0 +1,35 @@
+package com.comphenix.protocol.internal;
+
+import java.util.ServiceLoader;
+import java.util.function.Consumer;
+
+import org.bukkit.command.CommandExecutor;
+
+import com.comphenix.protocol.ProtocolLib;
+
+import io.netty.channel.Channel;
+
+public interface PlatformProvider {
+
+    static PlatformProvider get() {
+        return Holder.INSTANCE;
+    }
+
+    boolean hasEarlyChannelInitialization();
+
+    Runnable registerChannelInitializer(Consumer<Channel> channelInitializer);
+
+    void registerCommand(ProtocolLib plugin, String name, CommandExecutor executor);
+
+    final class Holder {
+
+        private static final PlatformProvider INSTANCE = ServiceLoader.load(
+                        PlatformProvider.class,
+                        PlatformProvider.class.getClassLoader())
+                .findFirst()
+                .orElseThrow(() -> new IllegalStateException("No ProtocolLib platform provider is available"));
+
+        private Holder() {
+        }
+    }
+}

src/main/java/com/comphenix/protocol/reflect/StructureModifier.java

@@ -90,6 +90,8 @@ public class StructureModifier<T> {
     protected Map<FieldAccessor, Integer> defaultFields;
     // Cache of previous types
     protected Map<Class<?>, StructureModifier<?>> subtypeCache;
+    // Cache of previous parameterized types
+    private Map<List<Type>, StructureModifier<?>> paramTypeCache = new HashMap<>();
 
     // Whether or subclasses should handle conversion
     protected boolean customConvertHandling;
@@ -201,6 +203,7 @@ public class StructureModifier<T> {
                 other.defaultFields,
                 other.converter,
                 other.subtypeCache);
+        this.paramTypeCache = other.paramTypeCache;
     }
 
     /**
@@ -531,8 +534,18 @@ public class StructureModifier<T> {
             return (StructureModifier<R>) NO_OP_MODIFIER;
         }
 
+        // parameterized lookups must not share a cache entry with the raw field type
+        List<Type> paramTypeKey = null;
+        if (paramTypes.length > 0) {
+            paramTypeKey = new ArrayList<>(paramTypes.length + 1);
+            paramTypeKey.add(fieldType);
+            paramTypeKey.addAll(Arrays.asList(paramTypes));
+        }
+
         // Do we need to update the cache?
-        StructureModifier<R> result = (StructureModifier<R>) this.subtypeCache.get(fieldType);
+        StructureModifier<R> result = (StructureModifier<R>) (paramTypeKey == null
+                ? this.subtypeCache.get(fieldType)
+                : this.paramTypeCache.get(paramTypeKey));
         if (result == null) {
             List<FieldAccessor> fields = new ArrayList<>();
             Map<FieldAccessor, Integer> defaults = new HashMap<>();
@@ -571,7 +584,11 @@ public class StructureModifier<T> {
 
             // Cache structure modifiers
             result = this.withFieldType(fieldType, fields, defaults);
-            this.subtypeCache.put(fieldType, result);
+            if (paramTypeKey == null) {
+                this.subtypeCache.put(fieldType, result);
+            } else {
+                this.paramTypeCache.put(paramTypeKey, result);
+            }
         }
 
         // Add the target too

src/main/java/com/comphenix/protocol/reflect/cloning/ImmutableDetector.java

@@ -63,6 +63,7 @@ public class ImmutableDetector implements Cloner {
         add(MinecraftReflection::getBlockClass);
         add(MinecraftReflection::getItemClass);
         add(MinecraftReflection::getSoundEffectClass);
+        add(MinecraftReflection::getWorldTypeClass);
 
         if (MinecraftVersion.AQUATIC_UPDATE.atOrAbove()) {
             add(MinecraftReflection::getFluidTypeClass);

src/main/java/com/comphenix/protocol/updater/SpigotUpdateRunnable.java

@@ -0,0 +1,58 @@
+/**
+ * ProtocolLib - Bukkit server library that allows access to the Minecraft protocol.
+ * Copyright (C) 2015 dmulloy2
+ * <p>
+ * This program is free software; you can redistribute it and/or modify it under the terms of the
+ * GNU General Public License as published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ * <p>
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
+ * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ * <p>
+ * You should have received a copy of the GNU General Public License along with this program;
+ * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ * 02111-1307 USA
+ */
+package com.comphenix.protocol.updater;
+
+import com.comphenix.protocol.ProtocolLibrary;
+import com.comphenix.protocol.error.Report;
+
+/**
+ * Update check worker (top-level class so the runtime always loads a single {@code .class} entry).
+ */
+final class SpigotUpdateRunnable implements Runnable {
+
+    private final SpigotUpdater updater;
+
+    SpigotUpdateRunnable(SpigotUpdater updater) {
+        this.updater = updater;
+    }
+
+    @Override
+    public void run() {
+        try {
+            String version = this.updater.getSpigotVersion();
+            this.updater.setRemoteVersion(version);
+
+            if (this.updater.versionCheck(version)) {
+                this.updater.result = Updater.UpdateResult.SPIGOT_UPDATE_AVAILABLE;
+            } else {
+                this.updater.result = Updater.UpdateResult.NO_UPDATE;
+            }
+        } catch (Throwable ex) {
+            if (ProtocolLibrary.getConfig().isDebug()) {
+                ProtocolLibrary.getErrorReporter().reportDetailed(
+                        this.updater,
+                        Report.newBuilder(Updater.REPORT_CANNOT_UPDATE_PLUGIN).error(ex).callerParam(this));
+            }
+
+            ProtocolLibrary.disableUpdates();
+        } finally {
+            for (Runnable listener : this.updater.listeners) {
+                ProtocolLibrary.getScheduler().runTask(listener);
+            }
+        }
+    }
+}

src/main/java/com/comphenix/protocol/updater/SpigotUpdater.java

@@ -16,8 +16,6 @@
  */
 package com.comphenix.protocol.updater;
 
-import com.comphenix.protocol.ProtocolLibrary;
-import com.comphenix.protocol.error.Report;
 import com.comphenix.protocol.utility.Closer;
 import org.bukkit.plugin.Plugin;
 
@@ -44,7 +42,7 @@ public final class SpigotUpdater extends Updater {
         waitForThread();
 
         this.type = type;
-        this.thread = new Thread(new SpigotUpdateRunnable());
+        this.thread = new Thread(new SpigotUpdateRunnable(this));
         this.thread.start();
     }
 
@@ -54,36 +52,8 @@ public final class SpigotUpdater extends Updater {
         return String.format(result.toString(), remoteVersion, plugin.getDescription().getVersion(), RESOURCE_URL);
     }
 
-    private class SpigotUpdateRunnable implements Runnable {
-
-        @Override
-        public void run() {
-            try {
-                String version = getSpigotVersion();
-                remoteVersion = version;
-
-                if (versionCheck(version)) {
-                    result = UpdateResult.SPIGOT_UPDATE_AVAILABLE;
-                } else {
-                    result = UpdateResult.NO_UPDATE;
-                }
-            } catch (Throwable ex) {
-                if (ProtocolLibrary.getConfig().isDebug()) {
-                    ProtocolLibrary.getErrorReporter().reportDetailed(
-                            SpigotUpdater.this, Report.newBuilder(REPORT_CANNOT_UPDATE_PLUGIN).error(ex).callerParam(this));
-                } else {
-                    // People don't care
-                    // plugin.getLogger().log(Level.WARNING, "Failed to check for updates: " + ex);
-                }
-
-                ProtocolLibrary.disableUpdates();
-            } finally {
-                // Invoke the listeners on the main thread
-                for (Runnable listener : listeners) {
-                    ProtocolLibrary.getScheduler().runTask(listener);
-                }
-            }
-        }
+    void setRemoteVersion(String remoteVersion) {
+        this.remoteVersion = remoteVersion;
     }
 
     private static final String RESOURCE_URL = "https://www.spigotmc.org/resources/protocollib.1997/";

src/main/java/com/comphenix/protocol/utility/CachedPackage.java

@@ -88,20 +88,23 @@ final class CachedPackage {
      * @throws RuntimeException If we are unable to find the given class.
      */
     public Optional<Class<?>> getPackageClass(String className, String... aliases) {
-        return cache.computeIfAbsent(className, x -> {
-            Optional<Class<?>> clazz = resolveClass(className);
-            if (clazz.isPresent()) {
-                return clazz;
-            }
+        Optional<Class<?>> cached = cache.get(className);
+        if (cached != null) {
+            return cached;
+        }
 
+        Optional<Class<?>> clazz = resolveClass(className);
+        if (!clazz.isPresent()) {
             for (String alias : aliases) {
-                clazz = resolveClass(alias);
-                if (clazz.isPresent()) {
-                    return clazz;
+                Optional<Class<?>> aliasClazz = resolveClass(alias);
+                if (aliasClazz.isPresent()) {
+                    clazz = aliasClazz;
+                    break;
                 }
             }
+        }
 
-            return Optional.empty();
-        });
+        cache.put(className, clazz);
+        return clazz;
     }
 }

src/main/java/com/comphenix/protocol/utility/MinecraftMethods.java

@@ -57,21 +57,25 @@ public final class MinecraftMethods {
     }
     
     public static Function<ByteBuf, Object> getFriendlyBufBufConstructor() {
-    	if (friendlyBufBufConstructor == null) {
-    		Optional<Class<?>> registryByteBuf = MinecraftReflection.getRegistryFriendlyByteBufClass();
-    		
-    		if (registryByteBuf.isPresent()) {
-    			ConstructorAccessor accessor = Accessors.getConstructorAccessor(FuzzyReflection.fromClass(registryByteBuf.get()).getConstructor(FuzzyMethodContract.newBuilder()
-    					.parameterDerivedOf(ByteBuf.class)
-    					.parameterDerivedOf(MinecraftReflection.getRegistryAccessClass())
-    					.build()));
-    			friendlyBufBufConstructor = (byteBuf) -> accessor.invoke(byteBuf, MinecraftRegistryAccess.get());
-    		} else {
-    			ConstructorAccessor accessor = Accessors.getConstructorAccessor(MinecraftReflection.getPacketDataSerializerClass(), ByteBuf.class);
-    			friendlyBufBufConstructor = (byteBuf) -> accessor.invoke(byteBuf);
-    		}
-    	}
-    	return friendlyBufBufConstructor;
+        if (friendlyBufBufConstructor == null) {
+            Optional<Class<?>> registryByteBuf = MinecraftReflection.getRegistryFriendlyByteBufClass();
+
+            if (registryByteBuf.isPresent()) {
+                ConstructorAccessor accessor = Accessors.getConstructorAccessor(
+                        FuzzyReflection.fromClass(registryByteBuf.get()).getConstructor(
+                                FuzzyMethodContract.newBuilder()
+                                        .parameterExactType(ByteBuf.class, 0)
+                                        .parameterExactType(MinecraftReflection.getRegistryAccessClass(), 1)
+                                        .build()));
+                friendlyBufBufConstructor = byteBuf -> accessor.invoke(byteBuf, MinecraftRegistryAccess.get());
+            } else {
+                ConstructorAccessor accessor = Accessors.getConstructorAccessor(
+                        MinecraftReflection.getPacketDataSerializerClass(),
+                        ByteBuf.class);
+                friendlyBufBufConstructor = byteBuf -> accessor.invoke(byteBuf);
+            }
+        }
+        return friendlyBufBufConstructor;
     }
 
     /**

src/main/java/com/comphenix/protocol/utility/MinecraftProtocolVersion.java

@@ -96,6 +96,12 @@ public final class MinecraftProtocolVersion {
         map.put(new MinecraftVersion(1, 21, 2), 768);
         map.put(new MinecraftVersion(1, 21, 6), 771);
         map.put(new MinecraftVersion(1, 21, 8), 772);
+        map.put(new MinecraftVersion(1, 21, 9), 773);
+        map.put(new MinecraftVersion(1, 21, 11), 774);
+
+        map.put(new MinecraftVersion(26, 1, 0), 775);
+        map.put(new MinecraftVersion(26, 2, 0), 776);
+        map.put(new MinecraftVersion(26, 3, 0), 777);
         return map;
     }
 

src/main/java/com/comphenix/protocol/utility/MinecraftReflection.java

@@ -553,6 +553,10 @@ public final class MinecraftReflection {
         return getClass("com.mojang.authlib.GameProfile");
     }
 
+    public static Class<?> getGameProfilePropertyMapClass() {
+        return getClass("com.mojang.authlib.properties.PropertyMap");
+    }
+
     /**
      * Retrieve the entity (NMS) class.
      *
@@ -917,15 +921,19 @@ public final class MinecraftReflection {
     }
 
     public static Class<?> getMinecraftKeyClass() {
-        return getMinecraftClass("resources.MinecraftKey", "resources.ResourceLocation", "MinecraftKey");
+        return getMinecraftClass("resources.MinecraftKey", "resources.Identifier", "resources.ResourceLocation", "MinecraftKey");
     }
 
     public static Class<?> getMobEffectListClass() {
-        return getMinecraftClass("world.effect.MobEffectList", "MobEffectList", "world.effect.MobEffect");
+        return getMinecraftClass("world.effect.MobEffectList", "MobEffectList", "world.effect.MobEffect", "world.effect.MobEffects");
+    }
+
+    public static Class<?> getDamageTypeClass() {
+        return getMinecraftClass("world.damagesource.DamageType");
     }
 
     public static Class<?> getSoundEffectClass() {
-        return getNullableNMS("sounds.SoundEffect", "sounds.SoundEvent", "SoundEffect");
+        return getNullableNMS("sounds.SoundEffect", "sounds.SoundEvent", "SoundEffect", "sounds.SoundEvents");
     }
 
     /**
@@ -1114,6 +1122,15 @@ public final class MinecraftReflection {
         return getOptionalNMS("network.chat.numbers.StyledFormat");
     }
 
+    /**
+     * Retrieve the NMS TeamColor class, added in 26.2.
+     *
+     * @return The TeamColor class.
+     */
+    public static Optional<Class<?>> getTeamColorClass() {
+        return getOptionalNMS("world.scores.TeamColor");
+    }
+
     /**
      * Retrieve the Gson class used by Minecraft.
      *
@@ -1413,8 +1430,13 @@ public final class MinecraftReflection {
             try {
                 Method asMirrorMethod = getCraftItemStackClass().getMethod("asCraftMirror", getItemStackClass());
                 asCraftMirror = Accessors.getMethodAccessor(asMirrorMethod);
-            } catch (ReflectiveOperationException ex) {
-                throw new RuntimeException("Failed to obtain CraftItemStack.asCraftMirror", ex);
+            } catch (ReflectiveOperationException ex1) {
+                try {
+                    Method asMirrorMethod = getCraftItemStackClass().getMethod("asBukkitMirror", getItemStackClass());
+                    asCraftMirror = Accessors.getMethodAccessor(asMirrorMethod);
+                } catch (ReflectiveOperationException ex2) {
+                    throw new RuntimeException("Failed to obtain CraftItemStack.asCraftMirror", ex2);
+                }
             }
         }
 
@@ -1476,6 +1498,18 @@ public final class MinecraftReflection {
             .orElseThrow(() -> new RuntimeException("Cannot find class " + className));
     }
 
+    /**
+     * Attempt to load a class by its fully-qualified canonical name, without prepending the
+     * Minecraft package. Unlike {@link #getMinecraftClass(String)}, this can resolve names that
+     * already include their package (e.g. {@code net.minecraft.network.protocol.game.XPacket}).
+     *
+     * @param className - the fully-qualified class name.
+     * @return Optional that may contain the class.
+     */
+    public static Optional<Class<?>> getOptionalClass(String className) {
+        return getClassSource().loadClass(className);
+    }
+
     /**
      * Retrieve the class object of a specific CraftBukkit class.
      *
@@ -1680,7 +1714,7 @@ public final class MinecraftReflection {
     }
 
     public static Class<?> getEntityTypes() {
-        return getMinecraftClass("world.entity.EntityTypes", "world.entity.EntityType", "EntityTypes");
+        return getMinecraftClass("world.entity.EntityType", "world.entity.EntityTypes", "EntityTypes");
     }
 
     public static Class<?> getParticleParam() {
@@ -1900,15 +1934,30 @@ public final class MinecraftReflection {
         return isMojangMapped;
     }
 
-    public static Optional<Class<?>> getDataComponentMapClass() {
-        return getOptionalNMS("core.component.DataComponentMap");
+    /**
+     * Retrieves the PositionMoveRotation class (introduced in 1.21.2).
+     *
+     * @return The PositionMoveRotation class.
+     */
+    public static Class<?> getPositionMoveRotationClass() {
+        return getMinecraftClass("world.entity.PositionMoveRotation");
     }
 
-    public static Optional<Class<?>> getDataComponentHolderClass() {
-        return getOptionalNMS("core.component.DataComponentHolder");
+    /**
+     * Retrieves the VecDelta class (since 26.3).
+     *
+     * @return The VecDelta class.
+     */
+    public static Optional<Class<?>> getVecDeltaClass() {
+        return getOptionalNMS("network.protocol.game.VecDelta");
     }
 
-    public static Optional<Class<?>> getTypedDataComponentClass() {
-        return getOptionalNMS("core.component.TypedDataComponent");
+    /**
+     * Retrieves the PositionPath class (since 26.3).
+     *
+     * @return The PositionPath class.
+     */
+    public static Optional<Class<?>> getPositionPathClass() {
+        return getOptionalNMS("world.entity.PositionPath");
     }
 }

src/main/java/com/comphenix/protocol/utility/MinecraftVersion.java

@@ -36,6 +36,36 @@ import org.bukkit.Server;
  * @author Kristian
  */
 public final class MinecraftVersion implements Comparable<MinecraftVersion>, Serializable {
+    /**
+     * Version 26.3 - wilderness bound
+     */
+    public static final MinecraftVersion v26_3 = new MinecraftVersion("26.3");
+
+    /**
+     * Version 26.2 - chaos cubed
+     */
+    public static final MinecraftVersion v26_2 = new MinecraftVersion("26.2");
+
+    /**
+     * Version 26.1 - tiny takeover
+     */
+    public static final MinecraftVersion v26_1 = new MinecraftVersion("26.1");
+
+    /**
+     * Version 1.21.11 - mounts of mayhem
+     */
+    public static final MinecraftVersion v1_21_11 = new MinecraftVersion("1.21.11");
+
+    /**
+     * Version 1.21.10 - hotfix for 1.21.9
+     */
+    public static final MinecraftVersion v1_21_10 = new MinecraftVersion("1.21.10");
+
+    /**
+     * Version 1.21.9 - the copper age drop
+     */
+    public static final MinecraftVersion v1_21_9 = new MinecraftVersion("1.21.9");
+
     /**
      * Version 1.21.6 - chase the skies
      */
@@ -169,7 +199,7 @@ public final class MinecraftVersion implements Comparable<MinecraftVersion>, Ser
     /**
      * The latest release version of minecraft.
      */
-    public static final MinecraftVersion LATEST = v1_21_6;
+    public static final MinecraftVersion LATEST = v26_3;
 
     // used when serializing
     private static final long serialVersionUID = -8695133558996459770L;

src/main/java/com/comphenix/protocol/utility/StreamSerializer.java

@@ -326,15 +326,9 @@ public class StreamSerializer {
 
     public byte[] getBytesAndRelease(ByteBuf buf) {
         try {
-            if (buf.hasArray()) {
-                // heap buffer, we can access the array directly
-                return buf.array();
-            } else {
-                // direct buffer, we need to copy the bytes into an array
-                byte[] bytes = new byte[buf.readableBytes()];
-                buf.readBytes(bytes);
-                return bytes;
-            }
+            byte[] bytes = new byte[buf.readableBytes()];
+            buf.getBytes(buf.readerIndex(), bytes);
+            return bytes;
         } finally {
             ReferenceCountUtil.safeRelease(buf);
         }

src/main/java/com/comphenix/protocol/utility/Validate.java

@@ -1,17 +0,0 @@
-package com.comphenix.protocol.utility;
-
-public final class Validate {
-    private Validate() {}
-
-    public static void notNull(Object obj, String err) {
-        if (obj == null) {
-            throw new IllegalArgumentException(err);
-        }
-    }
-
-    public static void isTrue(boolean bool, String err) {
-        if (!bool) {
-            throw new IllegalArgumentException(err);
-        }
-    }
-}

src/main/java/com/comphenix/protocol/utility/WordUtils.java

@@ -1,12 +0,0 @@
-package com.comphenix.protocol.utility;
-
-public final class WordUtils {
-    private WordUtils() {}
-
-    public static String capitalize(String str) {
-        if (str == null || str.isEmpty()) {
-            return str;
-        }
-        return str.substring(0, 1).toUpperCase() + str.substring(1).toLowerCase();
-    }
-}

src/main/java/com/comphenix/protocol/utility/ZeroBuffer.java

@@ -2,12 +2,14 @@ package com.comphenix.protocol.utility;
 
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.ByteBufAllocator;
-import io.netty.buffer.ByteBufProcessor;
+import io.netty.util.ByteProcessor;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
+import java.nio.channels.FileChannel;
 import java.nio.channels.GatheringByteChannel;
 import java.nio.channels.ScatteringByteChannel;
 import java.nio.charset.Charset;
@@ -54,6 +56,16 @@ public class ZeroBuffer extends ByteBuf {
         return false;
     }
 
+    @Override
+    public boolean isReadOnly() {
+        return false;
+    }
+
+    @Override
+    public ByteBuf asReadOnly() {
+        return null;
+    }
+
     @Override
     public int readerIndex() {
         return 0;
@@ -179,36 +191,71 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public short getShortLE(int i) {
+        return 0;
+    }
+
     @Override
     public int getUnsignedShort(int i) {
         return 0;
     }
 
+    @Override
+    public int getUnsignedShortLE(int i) {
+        return 0;
+    }
+
     @Override
     public int getMedium(int i) {
         return 0;
     }
 
+    @Override
+    public int getMediumLE(int i) {
+        return 0;
+    }
+
     @Override
     public int getUnsignedMedium(int i) {
         return 0;
     }
 
+    @Override
+    public int getUnsignedMediumLE(int i) {
+        return 0;
+    }
+
     @Override
     public int getInt(int i) {
         return 0;
     }
 
+    @Override
+    public int getIntLE(int i) {
+        return 0;
+    }
+
     @Override
     public long getUnsignedInt(int i) {
         return 0;
     }
 
+    @Override
+    public long getUnsignedIntLE(int i) {
+        return 0;
+    }
+
     @Override
     public long getLong(int i) {
         return 0;
     }
 
+    @Override
+    public long getLongLE(int i) {
+        return 0;
+    }
+
     @Override
     public char getChar(int i) {
         return 0;
@@ -264,6 +311,16 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public int getBytes(int i, FileChannel fileChannel, long l, int i1) throws IOException {
+        return 0;
+    }
+
+    @Override
+    public CharSequence getCharSequence(int i, int i1, Charset charset) {
+        return "";
+    }
+
     @Override
     public ByteBuf setBoolean(int i, boolean b) {
         return null;
@@ -279,21 +336,41 @@ public class ZeroBuffer extends ByteBuf {
         return null;
     }
 
+    @Override
+    public ByteBuf setShortLE(int i, int i1) {
+        return null;
+    }
+
     @Override
     public ByteBuf setMedium(int i, int i1) {
         return null;
     }
 
+    @Override
+    public ByteBuf setMediumLE(int i, int i1) {
+        return null;
+    }
+
     @Override
     public ByteBuf setInt(int i, int i1) {
         return null;
     }
 
+    @Override
+    public ByteBuf setIntLE(int i, int i1) {
+        return null;
+    }
+
     @Override
     public ByteBuf setLong(int i, long l) {
         return null;
     }
 
+    @Override
+    public ByteBuf setLongLE(int i, long l) {
+        return null;
+    }
+
     @Override
     public ByteBuf setChar(int i, int i1) {
         return null;
@@ -349,11 +426,21 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public int setBytes(int i, FileChannel fileChannel, long l, int i1) {
+        return 0;
+    }
+
     @Override
     public ByteBuf setZero(int i, int i1) {
         return null;
     }
 
+    @Override
+    public int setCharSequence(int i, CharSequence charSequence, Charset charset) {
+        return 0;
+    }
+
     @Override
     public boolean readBoolean() {
         return false;
@@ -374,36 +461,71 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public short readShortLE() {
+        return 0;
+    }
+
     @Override
     public int readUnsignedShort() {
         return 0;
     }
 
+    @Override
+    public int readUnsignedShortLE() {
+        return 0;
+    }
+
     @Override
     public int readMedium() {
         return 0;
     }
 
+    @Override
+    public int readMediumLE() {
+        return 0;
+    }
+
     @Override
     public int readUnsignedMedium() {
         return 0;
     }
 
+    @Override
+    public int readUnsignedMediumLE() {
+        return 0;
+    }
+
     @Override
     public int readInt() {
         return 0;
     }
 
+    @Override
+    public int readIntLE() {
+        return 0;
+    }
+
     @Override
     public long readUnsignedInt() {
         return 0;
     }
 
+    @Override
+    public long readUnsignedIntLE() {
+        return 0;
+    }
+
     @Override
     public long readLong() {
         return 0;
     }
 
+    @Override
+    public long readLongLE() {
+        return 0;
+    }
+
     @Override
     public char readChar() {
         return 0;
@@ -429,6 +551,11 @@ public class ZeroBuffer extends ByteBuf {
         return null;
     }
 
+    @Override
+    public ByteBuf readRetainedSlice(int i) {
+        return null;
+    }
+
     @Override
     public ByteBuf readBytes(ByteBuf byteBuf) {
         return null;
@@ -469,6 +596,16 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public CharSequence readCharSequence(int i, Charset charset) {
+        return "";
+    }
+
+    @Override
+    public int readBytes(FileChannel fileChannel, long l, int i) {
+        return 0;
+    }
+
     @Override
     public ByteBuf skipBytes(int i) {
         return null;
@@ -489,21 +626,41 @@ public class ZeroBuffer extends ByteBuf {
         return null;
     }
 
+    @Override
+    public ByteBuf writeShortLE(int i) {
+        return null;
+    }
+
     @Override
     public ByteBuf writeMedium(int i) {
         return null;
     }
 
+    @Override
+    public ByteBuf writeMediumLE(int i) {
+        return null;
+    }
+
     @Override
     public ByteBuf writeInt(int i) {
         return null;
     }
 
+    @Override
+    public ByteBuf writeIntLE(int i) {
+        return null;
+    }
+
     @Override
     public ByteBuf writeLong(long l) {
         return null;
     }
 
+    @Override
+    public ByteBuf writeLongLE(long l) {
+        return null;
+    }
+
     @Override
     public ByteBuf writeChar(int i) {
         return null;
@@ -559,11 +716,21 @@ public class ZeroBuffer extends ByteBuf {
         return 0;
     }
 
+    @Override
+    public int writeBytes(FileChannel fileChannel, long l, int i) {
+        return 0;
+    }
+
     @Override
     public ByteBuf writeZero(int i) {
         return null;
     }
 
+    @Override
+    public int writeCharSequence(CharSequence charSequence, Charset charset) {
+        return 0;
+    }
+
     @Override
     public int indexOf(int i, int i1, byte b) {
         return 0;
@@ -585,22 +752,22 @@ public class ZeroBuffer extends ByteBuf {
     }
 
     @Override
-    public int forEachByte(ByteBufProcessor byteBufProcessor) {
+    public int forEachByte(ByteProcessor byteProcessor) {
         return 0;
     }
 
     @Override
-    public int forEachByte(int i, int i1, ByteBufProcessor byteBufProcessor) {
+    public int forEachByte(int i, int i1, ByteProcessor byteProcessor) {
         return 0;
     }
 
     @Override
-    public int forEachByteDesc(ByteBufProcessor byteBufProcessor) {
+    public int forEachByteDesc(ByteProcessor byteProcessor) {
         return 0;
     }
 
     @Override
-    public int forEachByteDesc(int i, int i1, ByteBufProcessor byteBufProcessor) {
+    public int forEachByteDesc(int i, int i1, ByteProcessor byteProcessor) {
         return 0;
     }
 
@@ -619,16 +786,31 @@ public class ZeroBuffer extends ByteBuf {
         return null;
     }
 
+    @Override
+    public ByteBuf retainedSlice() {
+        return null;
+    }
+
     @Override
     public ByteBuf slice(int i, int i1) {
         return null;
     }
 
+    @Override
+    public ByteBuf retainedSlice(int i, int i1) {
+        return null;
+    }
+
     @Override
     public ByteBuf duplicate() {
         return null;
     }
 
+    @Override
+    public ByteBuf retainedDuplicate() {
+        return null;
+    }
+
     @Override
     public int nioBufferCount() {
         return 0;
@@ -738,4 +920,14 @@ public class ZeroBuffer extends ByteBuf {
     public ByteBuf retain() {
         return null;
     }
+
+    @Override
+    public ByteBuf touch() {
+        return null;
+    }
+
+    @Override
+    public ByteBuf touch(Object o) {
+        return null;
+    }
 }

src/main/java/com/comphenix/protocol/wrappers/BukkitConverters.java

@@ -70,6 +70,7 @@ import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
+import org.bukkit.NamespacedKey;
 import org.bukkit.Sound;
 import org.bukkit.World;
 import org.bukkit.WorldType;
@@ -873,6 +874,13 @@ public class BukkitConverters {
         return ignoreNull(new EquivalentConverter<EntityType>() {
             @Override
             public Object getGeneric(EntityType specific) {
+                if (MinecraftVersion.v26_2.atOrAbove()) {
+                    // EntityType.byString was removed in 26.2, resolve through the registry instead
+                    WrappedRegistry registry = WrappedRegistry.getRegistry(MinecraftReflection.getEntityTypes());
+                    NamespacedKey key = specific.getKey();
+                    return registry.get(new MinecraftKey(key.getNamespace(), key.getKey()));
+                }
+
                 if (entityTypeFromName == null) {
                     Class<?> entityTypesClass = MinecraftReflection.getEntityTypes();
                     entityTypeFromName = Accessors.getMethodAccessor(
@@ -1428,6 +1436,142 @@ public class BukkitConverters {
         });
     }
 
+    // Lazily-resolved CraftDamageType reflection. volatile + DCL keeps the publish safe
+    // and avoids re-running fuzzy lookups in concurrent injection paths.
+    private static volatile MethodAccessor damageTypeToNms = null;
+    private static volatile MethodAccessor damageTypeFromNms = null;
+    private static volatile MethodAccessor damageTypeHolderValue = null;
+    private static boolean damageTypeToNmsReturnsHolder;
+    private static boolean damageTypeFromNmsAcceptsHolder;
+    private static final Map<Object, Object> damageTypeHolders = new ConcurrentHashMap<>();
+
+    private static FuzzyReflection craftDamageTypeFuzzy() {
+        return FuzzyReflection.fromClass(getCraftBukkitClass("damage.CraftDamageType"), false);
+    }
+
+    private static MethodAccessor resolveDamageTypeToNms() {
+        MethodAccessor accessor = damageTypeToNms;
+        if (accessor != null) return accessor;
+        synchronized (BukkitConverters.class) {
+            accessor = damageTypeToNms;
+            if (accessor != null) return accessor;
+            try {
+                accessor = Accessors.getMethodAccessor(craftDamageTypeFuzzy().getMethod(FuzzyMethodContract.newBuilder()
+                        .parameterExactArray(org.bukkit.damage.DamageType.class)
+                        .returnTypeExact(MinecraftReflection.getDamageTypeClass())
+                        .requireModifier(Modifier.STATIC)
+                        .build()));
+            } catch (IllegalArgumentException exception) {
+                accessor = Accessors.getMethodAccessor(craftDamageTypeFuzzy().getMethod(FuzzyMethodContract.newBuilder()
+                        .parameterExactArray(org.bukkit.damage.DamageType.class)
+                        .returnTypeExact(MinecraftReflection.getHolderClass())
+                        .requireModifier(Modifier.STATIC)
+                        .build()));
+                damageTypeToNmsReturnsHolder = true;
+            }
+            damageTypeToNms = accessor;
+            return accessor;
+        }
+    }
+
+    private static MethodAccessor resolveDamageTypeFromNms() {
+        MethodAccessor accessor = damageTypeFromNms;
+        if (accessor != null) return accessor;
+        synchronized (BukkitConverters.class) {
+            accessor = damageTypeFromNms;
+            if (accessor != null) return accessor;
+            try {
+                accessor = Accessors.getMethodAccessor(craftDamageTypeFuzzy().getMethod(FuzzyMethodContract.newBuilder()
+                        .parameterExactArray(MinecraftReflection.getDamageTypeClass())
+                        .returnTypeExact(org.bukkit.damage.DamageType.class)
+                        .requireModifier(Modifier.STATIC)
+                        .build()));
+            } catch (IllegalArgumentException exception) {
+                accessor = Accessors.getMethodAccessor(craftDamageTypeFuzzy().getMethod(FuzzyMethodContract.newBuilder()
+                        .parameterExactArray(MinecraftReflection.getHolderClass())
+                        .returnTypeExact(org.bukkit.damage.DamageType.class)
+                        .requireModifier(Modifier.STATIC)
+                        .build()));
+                damageTypeFromNmsAcceptsHolder = true;
+            }
+            damageTypeFromNms = accessor;
+            return accessor;
+        }
+    }
+
+    private static Object getHolderValue(Object holder) {
+        MethodAccessor accessor = damageTypeHolderValue;
+        if (accessor == null) {
+            synchronized (BukkitConverters.class) {
+                accessor = damageTypeHolderValue;
+                if (accessor == null) {
+                    accessor = Accessors.getMethodAccessor(
+                            FuzzyReflection.fromClass(MinecraftReflection.getHolderClass(), false)
+                                    .getMethod(FuzzyMethodContract.newBuilder()
+                                            .parameterCount(0)
+                                            .banModifier(Modifier.STATIC)
+                                            .returnTypeExact(Object.class)
+                                            .build()));
+                    damageTypeHolderValue = accessor;
+                }
+            }
+        }
+        return accessor.invoke(holder);
+    }
+
+    private static Object getDamageTypeHolder(Object generic) {
+        Object holder = damageTypeHolders.get(generic);
+        if (holder != null) {
+            return holder;
+        }
+
+        MethodAccessor accessor = resolveDamageTypeToNms();
+        if (!damageTypeToNmsReturnsHolder) {
+            throw new IllegalStateException("CraftDamageType accepts holders but does not produce them");
+        }
+
+        for (org.bukkit.damage.DamageType damageType : org.bukkit.Registry.DAMAGE_TYPE) {
+            Object candidate = accessor.invoke(null, damageType);
+            Object candidateValue = getHolderValue(candidate);
+            damageTypeHolders.putIfAbsent(candidateValue, candidate);
+            if (Objects.equal(candidateValue, generic)) {
+                return candidate;
+            }
+        }
+
+        throw new IllegalArgumentException("Unable to resolve a holder for damage type " + generic);
+    }
+
+    public static EquivalentConverter<org.bukkit.damage.DamageType> getDamageTypeConverter() {
+        return ignoreNull(new EquivalentConverter<org.bukkit.damage.DamageType>() {
+
+            @Override
+            public Class<org.bukkit.damage.DamageType> getSpecificType() {
+                return org.bukkit.damage.DamageType.class;
+            }
+
+            @Override
+            public Object getGeneric(org.bukkit.damage.DamageType specific) {
+                Object generic = resolveDamageTypeToNms().invoke(null, specific);
+                if (damageTypeToNmsReturnsHolder) {
+                    Object value = getHolderValue(generic);
+                    damageTypeHolders.putIfAbsent(value, generic);
+                    return value;
+                }
+                return generic;
+            }
+
+            @Override
+            public org.bukkit.damage.DamageType getSpecific(Object generic) {
+                MethodAccessor accessor = resolveDamageTypeFromNms();
+                if (damageTypeFromNmsAcceptsHolder) {
+                    generic = getDamageTypeHolder(generic);
+                }
+                return (org.bukkit.damage.DamageType) accessor.invoke(null, generic);
+            }
+        });
+    }
+
     private static Class<?> dimensionManager;
     private static FauxEnumConverter<Dimension> dimensionConverter;
     private static FauxEnumConverter<DimensionImpl> dimensionImplConverter;

src/main/java/com/comphenix/protocol/wrappers/CustomPacketPayloadWrapper.java

@@ -18,6 +18,8 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.Objects;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
 
 import net.bytebuddy.ByteBuddy;
 import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
@@ -33,8 +35,8 @@ import net.bytebuddy.matcher.ElementMatchers;
  * by default. Constructing a new wrapper instance will give out a handle to a completely new implemented type, that
  * allows to set a key and some kind of data of any choice.
  * <p>
- * Note that constructing this class from a generic handle is only possible for the spigot-specific UnknownPayload type.
- * All other payloads should be accessed via a structure modifier directly.
+ * Constructing this class from a generic handle requires either retained raw byte data, such as {@code DiscardedPayload},
+ * or a writable serialization method on the concrete payload type.
  *
  * @author Pasqual Koschmieder
  */
@@ -46,7 +48,16 @@ public final class CustomPacketPayloadWrapper {
     private static final ConstructorAccessor PAYLOAD_WRAPPER_CONSTRUCTOR;
 
     private static final MethodAccessor GET_ID_PAYLOAD_METHOD;
+    private static final MethodAccessor GET_ID_HOLDER_PAYLOAD_METHOD;
+    private static final MethodAccessor GET_ID_PAYLOAD_HOLDER_METHOD;
     private static final MethodAccessor SERIALIZE_PAYLOAD_METHOD;
+    private static final Class<?> PAYLOAD_SERIALIZER_CLASS;
+    private static final ConcurrentHashMap<Class<?>, Optional<MethodAccessor>> SERIALIZE_PAYLOAD_METHODS =
+            new ConcurrentHashMap<>();
+
+    /** True when running on the nested-ID API where DiscardedPayload is used instead of the ByteBuddy proxy. */
+    private static final boolean USE_DISCARDED_PAYLOAD;
+    private static final boolean DISCARDED_PAYLOAD_USES_BYTE_ARRAY;
 
     private static final EquivalentConverter<CustomPacketPayloadWrapper> CONVERTER;
 
@@ -55,22 +66,73 @@ public final class CustomPacketPayloadWrapper {
             MINECRAFT_KEY_CLASS = MinecraftReflection.getMinecraftKeyClass();
             CUSTOM_PACKET_PAYLOAD_CLASS = MinecraftReflection.getMinecraftClass("network.protocol.common.custom.CustomPacketPayload");
 
-            Method getPayloadId = FuzzyReflection.fromClass(CUSTOM_PACKET_PAYLOAD_CLASS).getMethod(FuzzyMethodContract.newBuilder()
-                    .banModifier(Modifier.STATIC)
-                    .returnTypeExact(MINECRAFT_KEY_CLASS)
-                    .parameterCount(0)
-                    .build());
-            GET_ID_PAYLOAD_METHOD = Accessors.getMethodAccessor(getPayloadId);
+            Method getPayloadId = null;
+            Method getPayloadIdHolder = null;
+            Method getPayloadIdFromHolder = null;
+            boolean useDiscardedPayload = false;
+            try {
+                getPayloadId = FuzzyReflection.fromClass(CUSTOM_PACKET_PAYLOAD_CLASS).getMethod(FuzzyMethodContract.newBuilder()
+                        .banModifier(Modifier.STATIC)
+                        .returnTypeExact(MINECRAFT_KEY_CLASS)
+                        .parameterCount(0)
+                        .build());
+            } catch (IllegalArgumentException ignored) {
+                // Paper 26: the payload exposes its identifier through one intermediate record.
+                Method[] accessors = findChainedIdAccessors(CUSTOM_PACKET_PAYLOAD_CLASS, MINECRAFT_KEY_CLASS);
+                getPayloadIdHolder = accessors[0];
+                getPayloadIdFromHolder = accessors[1];
+                useDiscardedPayload = true;
+            }
+            GET_ID_PAYLOAD_METHOD = getPayloadId != null ? Accessors.getMethodAccessor(getPayloadId) : null;
+            GET_ID_HOLDER_PAYLOAD_METHOD = getPayloadIdHolder != null
+                    ? Accessors.getMethodAccessor(getPayloadIdHolder) : null;
+            GET_ID_PAYLOAD_HOLDER_METHOD = getPayloadIdFromHolder != null
+                    ? Accessors.getMethodAccessor(getPayloadIdFromHolder) : null;
+            USE_DISCARDED_PAYLOAD = useDiscardedPayload;
 
-            Method serializePayloadData = FuzzyReflection.fromClass(CUSTOM_PACKET_PAYLOAD_CLASS).getMethod(FuzzyMethodContract.newBuilder()
-                    .banModifier(Modifier.STATIC)
-                    .returnTypeVoid()
-                    .parameterCount(1)
-                    .parameterDerivedOf(ByteBuf.class, 0)
-                    .build());
-            SERIALIZE_PAYLOAD_METHOD = Accessors.getMethodAccessor(serializePayloadData);
+            Method serializePayloadData = null;
+            try {
+                serializePayloadData = FuzzyReflection.fromClass(CUSTOM_PACKET_PAYLOAD_CLASS).getMethod(FuzzyMethodContract.newBuilder()
+                        .banModifier(Modifier.STATIC)
+                        .returnTypeVoid()
+                        .parameterCount(1)
+                        .parameterDerivedOf(ByteBuf.class, 0)
+                        .build());
+            } catch (IllegalArgumentException ignored) {
+                // Paper 26 declares the write method on each concrete payload instead.
+            }
+            SERIALIZE_PAYLOAD_METHOD = serializePayloadData != null
+                    ? Accessors.getMethodAccessor(serializePayloadData) : null;
+            if (serializePayloadData == null) {
+                ByteBuf buffer = Unpooled.buffer();
+                try {
+                    PAYLOAD_SERIALIZER_CLASS = MinecraftReflection.getPacketDataSerializer(buffer).getClass();
+                } finally {
+                    if (buffer.refCnt() > 0) {
+                        buffer.release();
+                    }
+                }
+            } else {
+                PAYLOAD_SERIALIZER_CLASS = null;
+            }
 
-            Constructor<?> payloadWrapperConstructor = makePayloadWrapper();
+            Constructor<?> payloadWrapperConstructor;
+            boolean discardedPayloadUsesByteArray = false;
+            if (useDiscardedPayload) {
+                Class<?> discardedPayloadClass = MinecraftReflection.getMinecraftClass(
+                        "network.protocol.common.custom.DiscardedPayload");
+                try {
+                    payloadWrapperConstructor = discardedPayloadClass.getConstructor(
+                            MINECRAFT_KEY_CLASS, byte[].class);
+                    discardedPayloadUsesByteArray = true;
+                } catch (NoSuchMethodException exception) {
+                    payloadWrapperConstructor = discardedPayloadClass.getConstructor(
+                            MINECRAFT_KEY_CLASS, ByteBuf.class);
+                }
+            } else {
+                payloadWrapperConstructor = makePayloadWrapper();
+            }
+            DISCARDED_PAYLOAD_USES_BYTE_ARRAY = discardedPayloadUsesByteArray;
             PAYLOAD_WRAPPER_CONSTRUCTOR = Accessors.getConstructorAccessor(payloadWrapperConstructor);
 
             CONVERTER = new EquivalentConverter<CustomPacketPayloadWrapper>() {
@@ -94,6 +156,41 @@ public final class CustomPacketPayloadWrapper {
         }
     }
 
+    private static Method[] findChainedIdAccessors(Class<?> payloadClass, Class<?> keyClass) {
+        Method payloadAccessor = null;
+        Method keyAccessor = null;
+        FuzzyMethodContract keyAccessorContract = FuzzyMethodContract.newBuilder()
+                .banModifier(Modifier.STATIC)
+                .returnTypeExact(keyClass)
+                .parameterCount(0)
+                .build();
+
+        for (Method candidate : payloadClass.getMethods()) {
+            if (Modifier.isStatic(candidate.getModifiers()) || candidate.getParameterCount() != 0) {
+                continue;
+            }
+
+            Method candidateKeyAccessor;
+            try {
+                candidateKeyAccessor = FuzzyReflection.fromClass(candidate.getReturnType(), true)
+                        .getMethod(keyAccessorContract);
+            } catch (IllegalArgumentException ignored) {
+                continue;
+            }
+
+            if (payloadAccessor != null) {
+                throw new IllegalArgumentException("Multiple CustomPacketPayload identifier accessors found");
+            }
+            payloadAccessor = candidate;
+            keyAccessor = candidateKeyAccessor;
+        }
+
+        if (payloadAccessor == null) {
+            throw new IllegalArgumentException("Unable to find a CustomPacketPayload identifier accessor");
+        }
+        return new Method[]{payloadAccessor, keyAccessor};
+    }
+
     private static Constructor<?> makePayloadWrapper() throws Exception {
         return new ByteBuddy()
                 .subclass(Object.class)
@@ -116,6 +213,64 @@ public final class CustomPacketPayloadWrapper {
                 .getConstructor(MinecraftReflection.getMinecraftKeyClass(), byte[].class);
     }
 
+    private static Optional<MethodAccessor> findSerializePayloadMethod(Class<?> payloadClass) {
+        Method serializeMethod = null;
+        for (Method candidate : FuzzyReflection.fromClass(payloadClass, true).getMethods()) {
+            if (Modifier.isStatic(candidate.getModifiers())
+                    || candidate.getReturnType() != void.class
+                    || candidate.getParameterCount() != 1) {
+                continue;
+            }
+
+            Class<?> parameterClass = candidate.getParameterTypes()[0];
+            if (parameterClass == Object.class || !parameterClass.isAssignableFrom(PAYLOAD_SERIALIZER_CLASS)) {
+                continue;
+            }
+            if (serializeMethod != null) {
+                throw new IllegalArgumentException("Multiple CustomPacketPayload serialization methods found on "
+                        + payloadClass.getName());
+            }
+            serializeMethod = candidate;
+        }
+
+        if (serializeMethod == null) {
+            return Optional.empty();
+        }
+        serializeMethod.setAccessible(true);
+        return Optional.of(Accessors.getMethodAccessor(serializeMethod));
+    }
+
+    private static MethodAccessor getSerializePayloadMethod(Object payload) {
+        if (SERIALIZE_PAYLOAD_METHOD != null) {
+            return SERIALIZE_PAYLOAD_METHOD;
+        }
+        return SERIALIZE_PAYLOAD_METHODS
+                .computeIfAbsent(payload.getClass(), CustomPacketPayloadWrapper::findSerializePayloadMethod)
+                .orElse(null);
+    }
+
+    private static byte[] serializePayload(Object payload) {
+        MethodAccessor serializeMethod = getSerializePayloadMethod(payload);
+        if (serializeMethod == null) {
+            throw new UnsupportedOperationException(
+                    "Cannot extract raw custom payload bytes from " + payload.getClass().getName()
+                            + ": payload has no byte array, ByteBuf, or serialization method");
+        }
+
+        ByteBuf buffer = Unpooled.buffer();
+        try {
+            Object serializer = MinecraftReflection.getPacketDataSerializer(buffer);
+            serializeMethod.invoke(payload, serializer);
+            byte[] result = new byte[buffer.readableBytes()];
+            buffer.getBytes(buffer.readerIndex(), result);
+            return result;
+        } finally {
+            if (buffer.refCnt() > 0) {
+                buffer.release();
+            }
+        }
+    }
+
     // ====== api methods ======
 
     /**
@@ -171,29 +326,39 @@ public final class CustomPacketPayloadWrapper {
      * @return a wrapper holding the minecraft key and payload of the given custom payload instance.
      */
     public static CustomPacketPayloadWrapper fromUnknownPayload(Object payload) {
-        Object messageId = GET_ID_PAYLOAD_METHOD.invoke(payload);
-        MinecraftKey id = MinecraftKey.getConverter().getSpecific(messageId);
+        MinecraftKey id = getPayloadId(payload);
 
         // we read and retain the underlying buffer in case the class uses a buffer to store the data
         // this way, when passing the packet to further handling, the buffer is not released and can be re-used
         StructureModifier<Object> modifier = new StructureModifier<>(payload.getClass()).withTarget(payload);
-        byte[] messagePayload = modifier.withType(ByteBuf.class).optionRead(0)
-                .map(buffer -> {
-                    ByteBuf buf = (ByteBuf) buffer;
-                    byte[] data = StreamSerializer.getDefault().getBytesAndRelease(buf.markReaderIndex().retain());
-                    buf.resetReaderIndex();
-                    return data;
-                })
-                .orElseGet(() -> {
-                    ByteBuf buffer = Unpooled.buffer();
-                    Object serializer = MinecraftReflection.getPacketDataSerializer(buffer);
-                    SERIALIZE_PAYLOAD_METHOD.invoke(payload, serializer);
-                    return StreamSerializer.getDefault().getBytesAndRelease(buffer);
-                });
+        byte[] messagePayload = (byte[]) modifier.withType(byte[].class).readSafely(0);
+        if (messagePayload != null) {
+            messagePayload = messagePayload.clone();
+        } else {
+            messagePayload = modifier.withType(ByteBuf.class).optionRead(0)
+                    .map(buffer -> {
+                        ByteBuf buf = (ByteBuf) buffer;
+                        byte[] data = StreamSerializer.getDefault().getBytesAndRelease(buf.markReaderIndex().retain());
+                        buf.resetReaderIndex();
+                        return data;
+                    })
+                    .orElseGet(() -> serializePayload(payload));
+        }
 
         return new CustomPacketPayloadWrapper(messagePayload, id);
     }
 
+    private static MinecraftKey getPayloadId(Object payload) {
+        Object messageId;
+        if (GET_ID_PAYLOAD_METHOD != null) {
+            messageId = GET_ID_PAYLOAD_METHOD.invoke(payload);
+        } else {
+            Object idHolder = GET_ID_HOLDER_PAYLOAD_METHOD.invoke(payload);
+            messageId = GET_ID_PAYLOAD_HOLDER_METHOD.invoke(idHolder);
+        }
+        return MinecraftKey.getConverter().getSpecific(messageId);
+    }
+
     /**
      * Get the generic id of the wrapped message id.
      *
@@ -230,6 +395,13 @@ public final class CustomPacketPayloadWrapper {
      * @return a new payload wrapper instance using the provided message id and payload.
      */
     public Object newHandle() {
+        if (USE_DISCARDED_PAYLOAD) {
+            if (DISCARDED_PAYLOAD_USES_BYTE_ARRAY) {
+                return PAYLOAD_WRAPPER_CONSTRUCTOR.invoke(this.getGenericId(), this.payload);
+            }
+            ByteBuf buf = Unpooled.copiedBuffer(this.payload);
+            return PAYLOAD_WRAPPER_CONSTRUCTOR.invoke(this.getGenericId(), buf);
+        }
         return PAYLOAD_WRAPPER_CONSTRUCTOR.invoke(this.getGenericId(), this.payload);
     }
 

src/main/java/com/comphenix/protocol/wrappers/EnumWrappers.java

@@ -11,7 +11,7 @@ import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ConcurrentHashMap;
 
-import com.comphenix.protocol.utility.Validate;
+import org.apache.commons.lang.Validate;
 import org.bukkit.ChatColor;
 import org.bukkit.GameMode;
 
@@ -36,6 +36,12 @@ public abstract class EnumWrappers {
     public enum ClientCommand {
         PERFORM_RESPAWN,
         REQUEST_STATS,
+        REQUEST_GAMERULE_VALUES,
+
+        /**
+         * @deprecated Removed in 26.1
+         */
+        @Deprecated
         OPEN_INVENTORY_ACHIEVEMENT
     }
 
@@ -180,7 +186,9 @@ public abstract class EnumWrappers {
         DROP_ALL_ITEMS,
         DROP_ITEM,
         RELEASE_USE_ITEM,
-        SWAP_HELD_ITEMS("SWAP_ITEM_WITH_OFFHAND");
+        SWAP_HELD_ITEMS("SWAP_ITEM_WITH_OFFHAND"),
+        STAB,
+        CHANGE_DESTROY_DIRECTION;
 
         final String[] aliases;
         PlayerDigType(String... aliases) {
@@ -796,7 +804,10 @@ public abstract class EnumWrappers {
             PLAYER_DIG_TYPE_CLASS = getEnum(PacketType.Play.Client.BLOCK_DIG.getPacketClass(), 1);
             PLAYER_ACTION_CLASS = getEnum(PacketType.Play.Client.ENTITY_ACTION.getPacketClass(), 0);
             SCOREBOARD_ACTION_CLASS = getEnum(PacketType.Play.Server.SCOREBOARD_SCORE.getPacketClass(), 0);
-            PARTICLE_CLASS = getEnum(PacketType.Play.Server.WORLD_PARTICLES.getPacketClass(), 0);
+            // the particle enum was removed in 1.13, later packets may contain unrelated enums
+            if (!MinecraftVersion.AQUATIC_UPDATE.atOrAbove()) {
+                PARTICLE_CLASS = getEnum(PacketType.Play.Server.WORLD_PARTICLES.getPacketClass(), 0);
+            }
 
             PLAYER_INFO_ACTION_CLASS = getEnum(PacketType.Play.Server.PLAYER_INFO.getPacketClass(), 0);
             if (PLAYER_INFO_ACTION_CLASS == null) {
@@ -805,7 +816,7 @@ public abstract class EnumWrappers {
             }
 
             try {
-                SOUND_CATEGORY_CLASS = MinecraftReflection.getMinecraftClass("sounds.SoundCategory");
+                SOUND_CATEGORY_CLASS = MinecraftReflection.getMinecraftClass("sounds.SoundCategory", "sounds.SoundSource");
             } catch (Exception ex) {
                 SOUND_CATEGORY_CLASS = getEnum(PacketType.Play.Server.NAMED_SOUND_EFFECT.getPacketClass(), 0);
             }
@@ -821,13 +832,17 @@ public abstract class EnumWrappers {
             if (MinecraftVersion.CAVES_CLIFFS_1.atOrAbove()) {
                 HAND_CLASS = MinecraftReflection.getMinecraftClass("world.EnumHand", "world.InteractionHand");
 
-                FuzzyReflection fuzzy = FuzzyReflection.fromClass(MinecraftReflection.getEnumEntityUseActionClass(), true);
-                Method getType = fuzzy.getMethod(FuzzyMethodContract.newBuilder()
-                    .parameterCount(0)
-                    .returnTypeMatches(FuzzyMatchers.except(Void.class))
-                    .build());
+                if (MinecraftVersion.v26_1.atOrAbove()) {
+                    // TODO
+                } else {
+                    FuzzyReflection fuzzy = FuzzyReflection.fromClass(MinecraftReflection.getEnumEntityUseActionClass(), true);
+                    Method getType = fuzzy.getMethod(FuzzyMethodContract.newBuilder()
+                            .parameterCount(0)
+                            .returnTypeMatches(FuzzyMatchers.except(Void.class))
+                            .build());
 
-                ENTITY_USE_ACTION_CLASS = getType.getReturnType();
+                    ENTITY_USE_ACTION_CLASS = getType.getReturnType();
+                }
             } else {
                 HAND_CLASS = getEnum(PacketType.Play.Client.USE_ENTITY.getPacketClass(), 1);
                 ENTITY_USE_ACTION_CLASS = getEnum(PacketType.Play.Client.USE_ENTITY.getPacketClass(), 0);

src/main/java/com/comphenix/protocol/wrappers/LegacyDataWatcher.java

@@ -37,7 +37,7 @@ import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.wrappers.WrappedDataWatcher.WrappedDataWatcherObject;
 import com.comphenix.protocol.wrappers.collection.ConvertedMap;
 
-import com.comphenix.protocol.utility.Validate;
+import org.apache.commons.lang.Validate;
 import org.bukkit.Bukkit;
 import org.bukkit.entity.Entity;
 
@@ -105,17 +105,22 @@ public class LegacyDataWatcher extends AbstractWrapper implements IDataWatcher {
      */
     @Deprecated
     public LegacyDataWatcher(List<WrappedWatchableObject> objects) {
-        this(newHandle(fakeEntity(), objects));
+        this(newHandle(fakeEntity()));
+
+        for (WrappedWatchableObject object : objects) {
+            WrappedDataWatcherObject watcherObject = MinecraftReflection.watcherObjectExists()
+                    ? object.getWatcherObject()
+                    : WrappedDataWatcherObject.fromIndex(object.getIndex());
+            setObject(watcherObject, object, false);
+        }
     }
 
-    private static Object newHandle(Object entity, List<WrappedWatchableObject> objects) {
+    private static Object newHandle(Object entity) {
         if (constructor == null) {
-            constructor = Accessors.getConstructorAccessor(HANDLE_TYPE, MinecraftReflection.getEntityClass(),
-                MinecraftReflection.getArrayClass(MinecraftReflection.getDataWatcherItemClass()));
+            constructor = Accessors.getConstructorAccessor(HANDLE_TYPE, MinecraftReflection.getEntityClass());
         }
 
-        Object[] genericItems = new Object[0];// (Object[]) ITEMS_CONVERTER.getGeneric(objects);
-        return constructor.invoke(entity, genericItems);
+        return constructor.invoke(entity);
     }
 
     private static Object fakeEntity() {

src/main/java/com/comphenix/protocol/wrappers/MinecraftKey.java

@@ -53,14 +53,7 @@ public class MinecraftKey {
      * @param key The key
      */
     public MinecraftKey(String key) {
-        if (key.contains(":")) {
-            String[] split = key.split(":", 2);
-            this.prefix = split[0];
-            this.key = split[1];
-        } else {
-            this.prefix = "minecraft";
-            this.key = key;
-        }
+        this("minecraft", key);
     }
 
     /**

src/main/java/com/comphenix/protocol/wrappers/MutablePropertyMap.java

@@ -0,0 +1,29 @@
+package com.comphenix.protocol.wrappers;
+
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.ImmutableMultimap;
+import com.google.common.collect.Multimap;
+import com.mojang.authlib.properties.Property;
+import com.mojang.authlib.properties.PropertyMap;
+
+/**
+ * Mutable version of PropertyMap
+ * Credit to PaperMC: https://github.com/PaperMC/Paper/blob/main/paper-server/src/main/java/io/papermc/paper/profile/MutablePropertyMap.java
+ */
+public class MutablePropertyMap extends PropertyMap {
+    private final Multimap<String, Property> properties = HashMultimap.create();
+
+    public MutablePropertyMap() {
+        super(ImmutableMultimap.of());
+    }
+
+    public MutablePropertyMap(final Multimap<String, Property> properties) {
+        this();
+        this.putAll(properties);
+    }
+
+    @Override
+    protected Multimap<String, Property> delegate() {
+        return this.properties;
+    }
+}

src/main/java/com/comphenix/protocol/wrappers/ResourceKey.java

@@ -1,45 +0,0 @@
-package com.comphenix.protocol.wrappers;
-
-import com.comphenix.protocol.utility.MinecraftReflection;
-
-public class ResourceKey {
-    private static final AutoWrapper<ResourceKey> AUTO_WRAPPER = AutoWrapper.wrap(ResourceKey.class, MinecraftReflection.getResourceKey())
-        .field(0, MinecraftKey.getConverter())
-        .field(1, MinecraftKey.getConverter());
-
-    MinecraftKey registryName;
-    MinecraftKey location;
-
-    ResourceKey() {
-
-    }
-
-    public ResourceKey(MinecraftKey registryName, MinecraftKey location) {
-        this.registryName = registryName;
-        this.location = location;
-    }
-
-    public MinecraftKey getRegistryName() {
-        return registryName;
-    }
-
-    public MinecraftKey getLocation() {
-        return location;
-    }
-
-    public void setRegistryName(MinecraftKey registryName) {
-        this.registryName = registryName;
-    }
-
-    public void setLocation(MinecraftKey location) {
-        this.location = location;
-    }
-
-    public static ResourceKey fromGeneric(Object generic) {
-        return AUTO_WRAPPER.wrap(generic);
-    }
-
-    public Object toGeneric() {
-        return AUTO_WRAPPER.unwrap(this);
-    }
-}

src/main/java/com/comphenix/protocol/wrappers/WrappedDataComponent.java

@@ -1,181 +0,0 @@
-package com.comphenix.protocol.wrappers;
-
-import java.lang.reflect.RecordComponent;
-import java.util.Optional;
-
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
-import com.comphenix.protocol.reflect.accessors.MethodAccessor;
-import com.comphenix.protocol.reflect.cloning.AggregateCloner;
-import com.comphenix.protocol.utility.MinecraftReflection;
-
-/**
- * Represents a single data component in Minecraft, which is a key-value pair
- * used to store metadata about game objects such as items, mobs, and block entities.
- * <p>
- * This class provides methods to create, access, and manipulate data components,
- * as well as to convert them to and from their underlying NMS handles.
- *
- * @see WrappedDataComponentHolder
- */
-public final class WrappedDataComponent {
-    private static final Optional<Class<?>> HANDLE_TYPE = MinecraftReflection.getTypedDataComponentClass();
-
-    private static MethodAccessor TYPE_ACCESSOR;
-    private static MethodAccessor VALUE_ACCESSOR;
-    private static ConstructorAccessor CTOR_ACCESSOR;
-
-    private final Object keyHandle;
-    private final String key;
-
-    private Object value;
-
-    static {
-        initialize();
-    }
-
-    private static void initialize() {
-        if (HANDLE_TYPE.isEmpty()) {
-            return;
-        }
-
-        Class<?> clazz = HANDLE_TYPE.get();
-        RecordComponent typeComponent = clazz.getRecordComponents()[0];
-        TYPE_ACCESSOR = Accessors.getMethodAccessor(typeComponent.getAccessor());
-
-        RecordComponent valueComponent = clazz.getRecordComponents()[1];
-        VALUE_ACCESSOR = Accessors.getMethodAccessor(valueComponent.getAccessor());
-
-        CTOR_ACCESSOR = Accessors.getConstructorAccessor(clazz, typeComponent.getType(), valueComponent.getType());
-    }
-
-    WrappedDataComponent(Object keyHandle, String key, Object value) {
-        this.keyHandle = keyHandle;
-        this.key = key;
-        this.value = value;
-    }
-
-    /**
-     * @return the key of this data component, e.g. "minecraft:custom_data".
-     */
-    public String getKey() {
-        return key;
-    }
-
-    /**
-     * Updates the in-memory value of this data component.
-     * <br>
-     * <b>NOTE:</b> this does <b>NOT</b> update the underlying handle
-     * @param value new NMS value
-     */
-    public void setValue(Object value) {
-        this.value = value;
-    }
-
-    /**
-     * @return the current in-memory value of this data component
-     * @param <T> desired return type
-     */
-    @SuppressWarnings("unchecked")
-    public <T> T getValue() {
-        return (T) value;
-    }
-
-    /**
-     * Creates a new WrappedDataComponent from an existing NMS handle.
-     * @param handle NMS handle
-     * @return new WrappedDataComponent instance
-     */
-    public static WrappedDataComponent fromHandle(Object handle) {
-        if (TYPE_ACCESSOR == null || VALUE_ACCESSOR == null) {
-            throw new IllegalStateException("Unable to access TypedDataComponent");
-        }
-
-        Object typeHandle = TYPE_ACCESSOR.invoke(handle);
-        Object value = VALUE_ACCESSOR.invoke(handle);
-
-        WrappedRegistry componentTypeRegistry = WrappedRegistry.getDataComponentTypeRegistry();
-        String key = componentTypeRegistry.getKey(typeHandle).getFullKey();
-
-        return new WrappedDataComponent(typeHandle, key, value);
-    }
-
-    /**
-     * Creates a new NMS handle for this data component using the current value.
-     * @return new NMS handle
-     */
-    public Object getHandle() {
-        if (CTOR_ACCESSOR == null) {
-            throw new IllegalStateException("Unable to access TypedDataComponent constructor");
-        }
-
-        return CTOR_ACCESSOR.invoke(keyHandle, value);
-    }
-
-    /**
-     * Creates a new WrappedDataComponent with the specified key and no value.
-     * @param key the key of the data component, e.g. "minecraft:custom_data".
-     * @return new WrappedDataComponent instance
-     */
-    public static WrappedDataComponent create(String key) {
-        return create(key, null);
-    }
-
-    /**
-     * Creates a new WrappedDataComponent with the specified key and value.
-     * @param key the key of the data component, e.g. "minecraft:custom_data".
-     * @param value the NMS value of the data component, e.g. an ItemStack or Integer.
-     * @return new WrappedDataComponent instance
-     */
-    public static WrappedDataComponent create(String key, Object value) {
-        WrappedRegistry componentTypeRegistry = WrappedRegistry.getDataComponentTypeRegistry();
-        Object keyHandle = componentTypeRegistry.get(key);
-
-        if (keyHandle == null) {
-            throw new IllegalArgumentException("Invalid key: " + key);
-        }
-
-        return new WrappedDataComponent(keyHandle, key, value);
-    }
-
-    /**
-     * Creates a shallow clone of this WrappedDataComponent, which means it copies the key and value references,
-     * but does not clone the value itself. This should cover most cases where the value is immutable
-     * (e.g. strings, numbers, enums).
-     * @return a new WrappedDataComponent instance with the same key and value references
-     */
-    public WrappedDataComponent shallowClone() {
-        return new WrappedDataComponent(keyHandle, key, value);
-    }
-
-    /**
-     * Creates a deep clone of this WrappedDataComponent, which means it clones the value as well.
-     * This is useful when the value is mutable (e.g. books, NBT data) and you want to ensure that
-     * changes to the cloned component do not affect the original component.
-     * @return a new WrappedDataComponent instance with a cloned value
-     */
-    public WrappedDataComponent deepClone() {
-        Object clonedValue = AggregateCloner.DEFAULT.clone(value);
-        return new WrappedDataComponent(keyHandle, key, clonedValue);
-    }
-
-    @Override
-    public String toString() {
-        return "WrappedDataComponent[" + key + "=>" + value + "]";
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) return true;
-        if (!(obj instanceof WrappedDataComponent other)) return false;
-
-        return key.equals(other.key) && value.equals(other.value);
-    }
-
-    @Override
-    public int hashCode() {
-        int result = key.hashCode();
-        result = 31 * result + (value != null ? value.hashCode() : 0);
-        return result;
-    }
-}

src/main/java/com/comphenix/protocol/wrappers/WrappedDataComponentHolder.java

@@ -1,77 +0,0 @@
-package com.comphenix.protocol.wrappers;
-
-import java.lang.reflect.Modifier;
-import java.util.HashMap;
-import java.util.Map;
-import java.util.Optional;
-
-import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.MethodAccessor;
-import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
-import com.comphenix.protocol.utility.MinecraftReflection;
-
-import org.bukkit.inventory.ItemStack;
-
-/**
- * Provides access to a DataComponentHolder, which is an object that can hold
- * various (meta)data components
- */
-public final class WrappedDataComponentHolder extends AbstractWrapper {
-    private static MethodAccessor GET_COMPONENTS;
-    private static MethodAccessor GET_COMPONENT;
-
-    private static Optional<Class<?>> DATA_COMPONENT_MAP_CLASS = MinecraftReflection.getDataComponentMapClass();
-    private static Optional<Class<?>> DATA_COMPONENT_HOLDER_CLASS = MinecraftReflection.getDataComponentHolderClass();
-
-    static {
-        initialize();
-    }
-
-    private static void initialize() {
-        if (DATA_COMPONENT_MAP_CLASS.isEmpty() || DATA_COMPONENT_HOLDER_CLASS.isEmpty()) {
-            return;
-        }
-
-        Class<?> mapClass = DATA_COMPONENT_MAP_CLASS.get();
-        Class<?> holderClass = DATA_COMPONENT_HOLDER_CLASS.get();
-        FuzzyReflection fuzzy = FuzzyReflection.fromClass(holderClass, true);
-        GET_COMPONENTS = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract.newBuilder()
-            .parameterCount(0)
-            .returnTypeExact(mapClass)
-            .build()));
-        GET_COMPONENT = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract.newBuilder()
-            .parameterCount(1)
-            //.requireModifier(Modifier.PUBLIC)
-            .banModifier(Modifier.STATIC)
-            .parameterExactType(MinecraftReflection.getMinecraftClass("core.component.DataComponentType"))
-            .build()));
-    }
-
-    public WrappedDataComponentHolder(Object handle) {
-        super(DATA_COMPONENT_HOLDER_CLASS.orElseThrow(() -> new IllegalStateException("DataComponentHolder class is not available in this version")));
-        setHandle(handle);
-    }
-
-    public Map<String, WrappedDataComponent> getAllComponents() {
-        Iterable<?> components = (Iterable<?>) GET_COMPONENTS.invoke(handle);
-        Map<String, WrappedDataComponent> wrapped = new HashMap<>();
-        for (Object componentHandle : components) {
-            WrappedDataComponent component = WrappedDataComponent.fromHandle(componentHandle);
-            wrapped.put(component.getKey(), component);
-        }
-
-        return wrapped;
-    }
-
-    public WrappedDataComponent getComponent(String key) {
-        Object keyHandle = WrappedRegistry.getDataComponentTypeRegistry().get(key);
-        Object valueHandle = GET_COMPONENT.invoke(handle, keyHandle);
-        return new WrappedDataComponent(keyHandle, key, valueHandle);
-    }
-
-    public static WrappedDataComponentHolder fromItemStack(ItemStack itemStack) {
-        Object nmsStack = MinecraftReflection.getMinecraftItemStack(itemStack);
-        return new WrappedDataComponentHolder(nmsStack);
-    }
-}

src/main/java/com/comphenix/protocol/wrappers/WrappedDataWatcher.java

@@ -36,12 +36,12 @@ import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
 import com.comphenix.protocol.reflect.accessors.MethodAccessor;
 import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.utility.MinecraftVersion;
-import com.comphenix.protocol.utility.Validate;
 import com.comphenix.protocol.wrappers.EnumWrappers.Direction;
 import com.comphenix.protocol.wrappers.EnumWrappers.EntityPose;
 import com.comphenix.protocol.wrappers.nbt.NbtCompound;
 
 import com.google.common.collect.ImmutableBiMap;
+import org.apache.commons.lang.Validate;
 import org.bukkit.entity.Entity;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;

src/main/java/com/comphenix/protocol/wrappers/WrappedGameProfile.java

@@ -35,18 +35,23 @@ public class WrappedGameProfile extends AbstractWrapper {
             GAME_PROFILE, String.class, String.class);
     private static final ConstructorAccessor CREATE_UUID_STRING = Accessors.getConstructorAccessorOrNull(
             GAME_PROFILE, UUID.class, String.class);
+    private static final ConstructorAccessor CREATE_UUID_STRING_PROPERTIES = Accessors.getConstructorAccessorOrNull(
+            GAME_PROFILE, UUID.class, String.class, MinecraftReflection.getGameProfilePropertyMapClass());
 
     private static final FieldAccessor GET_UUID_STRING = Accessors.getFieldAccessorOrNull(
             GAME_PROFILE, "id", String.class);
 
-    private static final MethodAccessor GET_ID = Accessors.getMethodAccessorOrNull(
-            GAME_PROFILE, "getId");
-    private static final MethodAccessor GET_NAME = Accessors.getMethodAccessorOrNull(
-            GAME_PROFILE, "getName");
-    private static final MethodAccessor GET_PROPERTIES = Accessors.getMethodAccessorOrNull(
-            GAME_PROFILE, "getProperties");
-    private static final MethodAccessor IS_COMPLETE = Accessors.getMethodAccessorOrNull(
-            GAME_PROFILE, "isComplete");
+    private static final MethodAccessor GET_ID = findMethodAccessor(GAME_PROFILE, "id", "getId");
+    private static final MethodAccessor GET_NAME = findMethodAccessor(GAME_PROFILE, "name", "getName");
+    private static final MethodAccessor GET_PROPERTIES = findMethodAccessor(
+            GAME_PROFILE, "properties", "getProperties");
+    private static final MethodAccessor IS_COMPLETE = findMethodAccessor(
+            GAME_PROFILE, "complete", "isComplete");
+
+    static MethodAccessor findMethodAccessor(Class<?> type, String methodName, String fallbackName) {
+        MethodAccessor accessor = Accessors.getMethodAccessorOrNull(type, methodName);
+        return accessor != null ? accessor : Accessors.getMethodAccessorOrNull(type, fallbackName);
+    }
 
     // Fetching game profile
     private static FieldAccessor PLAYER_PROFILE;
@@ -117,6 +122,51 @@ public class WrappedGameProfile extends AbstractWrapper {
         this(parseUUID(id), name);
     }
 
+    private static Object createHandle(UUID uuid, String name, Multimap<String, WrappedSignedProperty> properties) {
+        if (CREATE_STRING_STRING != null) {
+            return CREATE_STRING_STRING.invoke(uuid != null ? uuid.toString() : null, name);
+        }
+
+        if (CREATE_UUID_STRING == null) {
+            throw new IllegalArgumentException("Unsupported GameProfile constructor.");
+        }
+
+        if (!MinecraftVersion.CONFIG_PHASE_PROTOCOL_UPDATE.atOrAbove()) {
+            return CREATE_UUID_STRING.invoke(uuid, name);
+        }
+
+        // 1.20.2+ requires all fields to have a value: null uuid -> UUID(0,0), null name -> empty name
+        // it's not allowed to pass null for both, so we need to pre-check that
+        if (uuid == null && (name == null || name.isEmpty())) {
+            throw new IllegalArgumentException("Name and ID cannot both be blank");
+        }
+
+        // 1.21.9+ made PropertyMap's underlying map immutable, so we need to override it with a mutable map
+        if (MinecraftVersion.v1_21_9.atOrAbove()) {
+            return CREATE_UUID_STRING_PROPERTIES.invoke(uuid == null ? MinecraftGenerator.SYS_UUID : uuid, name == null ? "" : name,
+                    convertPropertyMap(properties));
+        }
+
+        return CREATE_UUID_STRING.invoke(uuid == null ? MinecraftGenerator.SYS_UUID : uuid, name == null ? "" : name);
+    }
+
+    private static Object convertPropertyMap(Multimap<String, WrappedSignedProperty> properties) {
+        com.comphenix.protocol.wrappers.MutablePropertyMap map =
+                new com.comphenix.protocol.wrappers.MutablePropertyMap();
+
+        if (properties == null || properties.isEmpty()) {
+            return map;
+        }
+
+        for (String key : properties.keySet()) {
+            for (WrappedSignedProperty property : properties.get(key)) {
+                map.put(key, (com.mojang.authlib.properties.Property) property.getHandle());
+            }
+        }
+
+        return map;
+    }
+
     /**
      * Construct a new game profile with the given properties.
      * <p>
@@ -127,24 +177,12 @@ public class WrappedGameProfile extends AbstractWrapper {
      */
     public WrappedGameProfile(UUID uuid, String name) {
         super(GAME_PROFILE);
+        setHandle(createHandle(uuid, name, null));
+    }
 
-        if (CREATE_STRING_STRING != null) {
-            setHandle(CREATE_STRING_STRING.invoke(uuid != null ? uuid.toString() : null, name));
-        } else if (CREATE_UUID_STRING != null) {
-            if (MinecraftVersion.CONFIG_PHASE_PROTOCOL_UPDATE.atOrAbove()) {
-                // 1.20.2+ requires all fields to have a value: null uuid -> UUID(0,0), null name -> empty name
-                // it's not allowed to pass null for both, so we need to pre-check that
-                if (uuid == null && (name == null || name.isEmpty())) {
-                    throw new IllegalArgumentException("Name and ID cannot both be blank");
-                }
-
-                setHandle(CREATE_UUID_STRING.invoke(uuid == null ? MinecraftGenerator.SYS_UUID : uuid, name == null ? "" : name));
-            } else {
-                setHandle(CREATE_UUID_STRING.invoke(uuid, name));
-            }
-        } else {
-            throw new IllegalArgumentException("Unsupported GameProfile constructor.");
-        }
+    public WrappedGameProfile(UUID uuid, String name, Multimap<String, WrappedSignedProperty> properties) {
+        super(GAME_PROFILE);
+        setHandle(createHandle(uuid, name, properties));
     }
 
     /**
@@ -157,7 +195,12 @@ public class WrappedGameProfile extends AbstractWrapper {
         if (handle == null)
             return null;
 
-        return new WrappedGameProfile(handle);
+        WrappedGameProfile delegate = new WrappedGameProfile(handle);
+        if (MinecraftVersion.v1_21_9.atOrAbove()) {
+            return new WrappedGameProfile(delegate.getUUID(), delegate.getName(), delegate.getProperties());
+        } else {
+            return delegate;
+        }
     }
 
     /**
@@ -269,7 +312,15 @@ public class WrappedGameProfile extends AbstractWrapper {
 
         if (result == null) {
             Multimap properties = (Multimap) GET_PROPERTIES.invoke(handle);
-            result = new ConvertedMultimap<String, Object, WrappedSignedProperty>(GuavaWrappers.getBukkitMultimap(properties)) {
+
+            Multimap inner;
+            if (MinecraftVersion.v1_21_9.atOrAbove()) {
+                inner = properties;
+            } else {
+                inner = GuavaWrappers.getBukkitMultimap(properties);
+            }
+
+            result = new ConvertedMultimap<String, Object, WrappedSignedProperty>(inner) {
                 @Override
                 protected Object toInner(WrappedSignedProperty outer) {
                     return outer.handle;

src/main/java/com/comphenix/protocol/wrappers/WrappedLevelChunkData.java

@@ -3,8 +3,11 @@ package com.comphenix.protocol.wrappers;
 import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.BitSet;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
+import java.util.function.Function;
 
 import com.comphenix.protocol.reflect.EquivalentConverter;
 import org.jetbrains.annotations.Nullable;
@@ -49,11 +52,19 @@ public final class WrappedLevelChunkData {
         static {
             FuzzyReflection reflection = FuzzyReflection.fromClass(HANDLE_TYPE, true);
 
-            LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR = Accessors.getConstructorAccessor(reflection.getConstructor(FuzzyMethodContract.newBuilder()
-            		.parameterDerivedOf(MinecraftReflection.getPacketDataSerializerClass())
-            		.parameterExactType(int.class)
-            		.parameterExactType(int.class)
-            		.build()));
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR = Accessors.getConstructorAccessor(reflection.getConstructor(FuzzyMethodContract.newBuilder()
+                        .parameterExactType(Map.class)
+                        .parameterExactType(byte[].class)
+                        .parameterExactType(List.class)
+                        .build()));
+            } else {
+                LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR = Accessors.getConstructorAccessor(reflection.getConstructor(FuzzyMethodContract.newBuilder()
+                        .parameterDerivedOf(MinecraftReflection.getPacketDataSerializerClass())
+                        .parameterExactType(int.class)
+                        .parameterExactType(int.class)
+                        .build()));
+            }
             BLOCK_ENTITIES_DATA_ACCESSOR = Accessors.getFieldAccessor(reflection.getField(FuzzyFieldContract.newBuilder()
                     .typeExact(List.class)
                     .build()));
@@ -180,7 +191,12 @@ public final class WrappedLevelChunkData {
          */
         @Deprecated
         public static ChunkData fromValues(NbtCompound heightmapsTag, byte[] buffer, List<BlockEntityInfo> blockEntityInfo) {
-            ChunkData data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(StructureCache.newNullDataSerializer(), 0, 0));
+            ChunkData data;
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(Collections.emptyMap(), new byte[0], Collections.emptyList()));
+            } else {
+                data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(StructureCache.newNullDataSerializer(), 0, 0));
+            }
 
             data.setHeightmapsTag(heightmapsTag);
             data.setBuffer(buffer);
@@ -198,7 +214,12 @@ public final class WrappedLevelChunkData {
          * @return a newly created wrapper
          */
         public static ChunkData fromValues(Map<EnumWrappers.HeightmapType, long[]> heightmaps, byte[] buffer, List<BlockEntityInfo> blockEntityInfo) {
-            ChunkData data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(StructureCache.newNullDataSerializer(), 0, 0));
+            ChunkData data;
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(Collections.emptyMap(), new byte[0], Collections.emptyList()));
+            } else {
+                data = new ChunkData(LEVEL_CHUNK_PACKET_DATA_CONSTRUCTOR.invoke(StructureCache.newNullDataSerializer(), 0, 0));
+            }
 
             data.setHeightmaps(heightmaps);
             data.setBuffer(buffer);
@@ -433,18 +454,29 @@ public final class WrappedLevelChunkData {
 
         static {
             FuzzyReflection reflection = FuzzyReflection.fromClass(HANDLE_TYPE, true);
-            List<Field> posFields = reflection.getFieldList(FuzzyFieldContract.newBuilder().typeExact(int.class).build());
 
-            BLOCK_ENTITY_INFO_CONSTRUCTOR = Accessors.getConstructorAccessor(HANDLE_TYPE, int.class, int.class,
-                    MinecraftReflection.getBlockEntityTypeClass(), MinecraftReflection.getNBTCompoundClass());
-            PACKED_XZ_ACCESSOR = Accessors.getFieldAccessor(posFields.get(0));
-            Y_ACCESSOR = Accessors.getFieldAccessor(posFields.get(1));
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                BLOCK_ENTITY_INFO_CONSTRUCTOR = Accessors.getConstructorAccessor(HANDLE_TYPE, byte.class, short.class,
+                        MinecraftReflection.getBlockEntityTypeClass(), Optional.class);
+                PACKED_XZ_ACCESSOR = new IntegerFieldAccessor(Accessors.getFieldAccessor(HANDLE_TYPE, byte.class, true), Number::byteValue);
+                Y_ACCESSOR = new IntegerFieldAccessor(Accessors.getFieldAccessor(HANDLE_TYPE, short.class, true), Number::shortValue);
+                TAG_ACCESSOR = Accessors.getFieldAccessor(reflection.getField(FuzzyFieldContract.newBuilder()
+                    .typeExact(Optional.class)
+                    .build()));
+            } else {
+                List<Field> posFields = reflection.getFieldList(FuzzyFieldContract.newBuilder().typeExact(int.class).build());
+
+                BLOCK_ENTITY_INFO_CONSTRUCTOR = Accessors.getConstructorAccessor(HANDLE_TYPE, int.class, int.class,
+                        MinecraftReflection.getBlockEntityTypeClass(), MinecraftReflection.getNBTCompoundClass());
+                PACKED_XZ_ACCESSOR = Accessors.getFieldAccessor(posFields.get(0));
+                Y_ACCESSOR = Accessors.getFieldAccessor(posFields.get(1));
+                TAG_ACCESSOR = Accessors.getFieldAccessor(reflection.getField(FuzzyFieldContract.newBuilder()
+                    .typeExact(MinecraftReflection.getNBTCompoundClass())
+                    .build()));
+            }
             TYPE_ACCESSOR = Accessors.getFieldAccessor(reflection.getField(FuzzyFieldContract.newBuilder()
                     .typeExact(MinecraftReflection.getBlockEntityTypeClass())
                     .build()));
-            TAG_ACCESSOR = Accessors.getFieldAccessor(reflection.getField(FuzzyFieldContract.newBuilder()
-                    .typeExact(MinecraftReflection.getNBTCompoundClass())
-                    .build()));
         }
 
         public BlockEntityInfo(Object handle) {
@@ -533,6 +565,9 @@ public final class WrappedLevelChunkData {
         @Nullable
         public NbtCompound getAdditionalData() {
             Object tagHandle = TAG_ACCESSOR.get(handle);
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                tagHandle = ((Optional<Object>) tagHandle).orElse(null);
+            }
 
             return tagHandle == null ? null : NbtFactory.fromNMSCompound(tagHandle);
         }
@@ -543,7 +578,11 @@ public final class WrappedLevelChunkData {
          * @param additionalData the additional data for this block entity, can be {@code null}
          */
         public void setAdditionalData(@Nullable NbtCompound additionalData) {
-            TAG_ACCESSOR.set(handle, additionalData == null ? null : NbtFactory.fromBase(additionalData).getHandle());
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                TAG_ACCESSOR.set(handle, Optional.ofNullable(additionalData).map(data -> NbtFactory.fromBase(data).getHandle()));
+            } else {
+                TAG_ACCESSOR.set(handle, additionalData == null ? null : NbtFactory.fromBase(additionalData).getHandle());
+            }
         }
 
         /**
@@ -568,12 +607,46 @@ public final class WrappedLevelChunkData {
          * @param additionalData An NBT-Tag containing additional information. Can be {@code null}.
          */
         public static BlockEntityInfo fromValues(int sectionX, int sectionZ, int y, MinecraftKey typeKey, @Nullable NbtCompound additionalData) {
-            return new BlockEntityInfo(BLOCK_ENTITY_INFO_CONSTRUCTOR.invoke(
+            if (MinecraftVersion.v26_3.atOrAbove()) {
+                return new BlockEntityInfo(BLOCK_ENTITY_INFO_CONSTRUCTOR.invoke(
+                    (byte) (sectionX << 4 | sectionZ),
+                    (short) y,
+                    REGISTRY.get(typeKey),
+                    Optional.ofNullable(additionalData).map(data -> NbtFactory.fromBase(data).getHandle())
+                ));
+            } else {
+                return new BlockEntityInfo(BLOCK_ENTITY_INFO_CONSTRUCTOR.invoke(
                     sectionX << 4 | sectionZ,
                     y,
                     REGISTRY.get(typeKey),
                     additionalData == null ? null : NbtFactory.fromBase(additionalData).getHandle()
-            ));
+                ));
+            }
+        }
+    }
+
+    private final static class IntegerFieldAccessor implements FieldAccessor {
+        private final FieldAccessor inner;
+        private final Function<Number, Object> toType;
+
+        public IntegerFieldAccessor(FieldAccessor inner, Function<Number, Object> toType) {
+            this.inner = inner;
+            this.toType = toType;
+        }
+
+        @Override
+        public Object get(Object instance) {
+            return ((Number) this.inner.get(instance)).intValue();
+        }
+
+        @Override
+        public void set(Object instance, Object value) {
+            this.inner.set(instance, this.toType.apply((Integer) value));
+        }
+
+        @Override
+        public Field getField() {
+            return this.inner.getField();
         }
     }
 }

src/main/java/com/comphenix/protocol/wrappers/WrappedParticle.java

@@ -27,6 +27,15 @@ public class WrappedParticle<T> {
     private static MethodAccessor toNMS;
     private static MethodAccessor toCraftData;
 
+    private static final class ItemStackTemplateAccessor {
+        private static final Class<?> TYPE = MinecraftReflection.getMinecraftClass("world.item.ItemStackTemplate");
+        private static final MethodAccessor CREATE_ITEM_STACK = Accessors.getMethodAccessor(
+                FuzzyReflection.fromClass(TYPE).getMethod(FuzzyMethodContract.newBuilder()
+                        .returnTypeExact(MinecraftReflection.getItemStackClass())
+                        .parameterCount(0)
+                        .build()));
+    }
+
     private static void ensureMethods() {
         if (toBukkit != null && toNMS != null) {
             return;
@@ -176,6 +185,15 @@ public class WrappedParticle<T> {
     }
 
     private static Object getItem(Object handle) {
+        if (MinecraftVersion.v26_1.atOrAbove()) {
+            Object template = new StructureModifier<>(handle.getClass())
+                    .withTarget(handle)
+                    .withType(ItemStackTemplateAccessor.TYPE)
+                    .read(0);
+            Object itemStack = ItemStackTemplateAccessor.CREATE_ITEM_STACK.invoke(template);
+            return BukkitConverters.getItemStackConverter().getSpecific(itemStack);
+        }
+
         return new StructureModifier<>(handle.getClass())
                 .withTarget(handle)
                 .withType(MinecraftReflection.getItemStackClass(), BukkitConverters.getItemStackConverter())

src/main/java/com/comphenix/protocol/wrappers/WrappedPositionMoveRotation.java

@@ -0,0 +1,183 @@
+package com.comphenix.protocol.wrappers;
+
+import com.comphenix.protocol.reflect.EquivalentConverter;
+import com.comphenix.protocol.reflect.StructureModifier;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+
+import org.bukkit.util.Vector;
+
+/**
+ * Wrapper around the NMS {@code PositionMoveRotation} record, introduced in Minecraft 1.21.2.
+ * <p>
+ * This type is used in packets such as {@code ENTITY_TELEPORT} and {@code ENTITY_POSITION_SYNC}
+ * to represent combined position, movement delta and rotation.
+ * <p>
+ * Example usage:
+ * <pre>{@code
+ * WrappedPositionMoveRotation posRot = WrappedPositionMoveRotation.create(
+ *         new Vector(x, y, z),   // position
+ *         new Vector(0, 0, 0),   // deltaMovement
+ *         yaw,                   // yRot
+ *         pitch                  // xRot
+ * );
+ * packet.getPositionMoveRotation().write(0, posRot);
+ * }</pre>
+ */
+public class WrappedPositionMoveRotation extends AbstractWrapper {
+
+    private static Class<?> NMS_CLASS;
+    private static ConstructorAccessor CONSTRUCTOR;
+    private static StructureModifier<Object> BASE_MODIFIER;
+
+    private final StructureModifier<Object> modifier;
+
+    private WrappedPositionMoveRotation(Object handle) {
+        super(getNmsClass());
+        setHandle(handle);
+        this.modifier = getBaseModifier().withTarget(handle);
+    }
+
+    private static Class<?> getNmsClass() {
+        if (NMS_CLASS == null) {
+            NMS_CLASS = MinecraftReflection.getPositionMoveRotationClass();
+        }
+        return NMS_CLASS;
+    }
+
+    private static StructureModifier<Object> getBaseModifier() {
+        if (BASE_MODIFIER == null) {
+            BASE_MODIFIER = new StructureModifier<>(getNmsClass());
+        }
+        return BASE_MODIFIER;
+    }
+
+    private static ConstructorAccessor getConstructor() {
+        if (CONSTRUCTOR == null) {
+            CONSTRUCTOR = Accessors.getConstructorAccessor(
+                    getNmsClass(),
+                    MinecraftReflection.getVec3DClass(),
+                    MinecraftReflection.getVec3DClass(),
+                    float.class,
+                    float.class
+            );
+        }
+        return CONSTRUCTOR;
+    }
+
+    /**
+     * Creates a new {@code WrappedPositionMoveRotation} from the given NMS handle.
+     *
+     * @param handle - the NMS {@code PositionMoveRotation} instance.
+     * @return the wrapper.
+     */
+    public static WrappedPositionMoveRotation fromHandle(Object handle) {
+        return new WrappedPositionMoveRotation(handle);
+    }
+
+    /**
+     * Creates a new {@code WrappedPositionMoveRotation} with the given values.
+     *
+     * @param position      - the absolute position.
+     * @param deltaMovement - the movement delta (velocity).
+     * @param yRot          - the yaw rotation.
+     * @param xRot          - the pitch rotation.
+     * @return a new wrapper instance.
+     */
+    public static WrappedPositionMoveRotation create(Vector position, Vector deltaMovement, float yRot, float xRot) {
+        EquivalentConverter<Vector> conv = BukkitConverters.getVectorConverter();
+        Object handle = getConstructor().invoke(
+                conv.getGeneric(position),
+                conv.getGeneric(deltaMovement),
+                yRot,
+                xRot
+        );
+        return new WrappedPositionMoveRotation(handle);
+    }
+
+    /**
+     * Retrieves the absolute position component.
+     *
+     * @return the position as a Bukkit {@link Vector}.
+     */
+    public Vector getPosition() {
+        return modifier.withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter()).read(0);
+    }
+
+    /**
+     * Sets the absolute position component.
+     *
+     * @param position - the new position.
+     */
+    public void setPosition(Vector position) {
+        modifier.withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter()).write(0, position);
+    }
+
+    /**
+     * Retrieves the movement delta (velocity) component.
+     *
+     * @return the delta movement as a Bukkit {@link Vector}.
+     */
+    public Vector getDeltaMovement() {
+        return modifier.withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter()).read(1);
+    }
+
+    /**
+     * Sets the movement delta (velocity) component.
+     *
+     * @param deltaMovement - the new delta movement.
+     */
+    public void setDeltaMovement(Vector deltaMovement) {
+        modifier.withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter()).write(1, deltaMovement);
+    }
+
+    /**
+     * Retrieves the yaw rotation (y-axis rotation).
+     *
+     * @return the yaw as a float.
+     */
+    public float getYRot() {
+        StructureModifier<Float> floats = modifier.withType(float.class);
+        return floats.read(0);
+    }
+
+    /**
+     * Sets the yaw rotation (y-axis rotation).
+     *
+     * @param yRot - the new yaw value.
+     */
+    public void setYRot(float yRot) {
+        modifier.withType(float.class).write(0, yRot);
+    }
+
+    /**
+     * Retrieves the pitch rotation (x-axis rotation).
+     *
+     * @return the pitch as a float.
+     */
+    public float getXRot() {
+        StructureModifier<Float> floats = modifier.withType(float.class);
+        return floats.read(1);
+    }
+
+    /**
+     * Sets the pitch rotation (x-axis rotation).
+     *
+     * @param xRot - the new pitch value.
+     */
+    public void setXRot(float xRot) {
+        modifier.withType(float.class).write(1, xRot);
+    }
+
+    /**
+     * Returns an {@link EquivalentConverter} that converts between {@code WrappedPositionMoveRotation}
+     * and the underlying NMS handle.
+     *
+     * @return the converter.
+     */
+    public static EquivalentConverter<WrappedPositionMoveRotation> getConverter() {
+        return Converters.handle(AbstractWrapper::getHandle,
+                WrappedPositionMoveRotation::fromHandle, WrappedPositionMoveRotation.class);
+    }
+}

src/main/java/com/comphenix/protocol/wrappers/WrappedPositionPath.java

@@ -0,0 +1,207 @@
+package com.comphenix.protocol.wrappers;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.ParameterizedType;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import com.comphenix.protocol.reflect.EquivalentConverter;
+import com.comphenix.protocol.reflect.StructureModifier;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+
+import com.google.common.base.Preconditions;
+import org.bukkit.util.Vector;
+
+/**
+ * Wrapper around the NMS {@code PositionPath} type, introduced in Minecraft 26.3.
+ * <p>
+ * Used by {@code ENTITY_POSITION_SYNC} to store the entity position. A path is either linear (a single position) or
+ * stepped (several positions reached at given ticks).
+ * <pre>{@code
+ * packet.getPositionPaths().write(0, WrappedPositionPath.linear(new Vector(x, y, z)));
+ * }</pre>
+ */
+public final class WrappedPositionPath extends AbstractWrapper {
+
+    private static Class<?> STEPPED_CLASS;
+
+    private static ConstructorAccessor LINEAR_CONSTRUCTOR;
+    private static ConstructorAccessor STEPPED_CONSTRUCTOR;
+    private static ConstructorAccessor STEP_CONSTRUCTOR;
+
+    private static StructureModifier<Object> LINEAR_MODIFIER;
+    private static StructureModifier<Object> STEPPED_MODIFIER;
+    private static StructureModifier<Object> STEP_MODIFIER;
+
+    private static volatile boolean initialized;
+
+    private WrappedPositionPath(Object handle) {
+        super(getPositionPathClass());
+        setHandle(handle);
+    }
+
+    private static Class<?> getPositionPathClass() {
+        return MinecraftReflection.getPositionPathClass()
+                .orElseThrow(() -> new UnsupportedOperationException("PositionPath requires Minecraft 26.3 or newer"));
+    }
+
+    private static void initialize() {
+        if (initialized) {
+            return;
+        }
+
+        Class<?> pathClass = getPositionPathClass();
+        Class<?> vec3Class = MinecraftReflection.getVec3DClass();
+        Class<?> linearClass = null;
+        Class<?> stepClass = null;
+
+        for (Class<?> nested : pathClass.getDeclaredClasses()) {
+            if (!pathClass.isAssignableFrom(nested)) {
+                continue;
+            }
+
+            Field steps = getListField(nested);
+            if (steps != null) {
+                STEPPED_CLASS = nested;
+                stepClass = (Class<?>) ((ParameterizedType) steps.getGenericType()).getActualTypeArguments()[0];
+            } else {
+                linearClass = nested;
+            }
+        }
+
+        Preconditions.checkState(linearClass != null && STEPPED_CLASS != null, "Unable to find PositionPath implementations");
+
+        LINEAR_CONSTRUCTOR = Accessors.getConstructorAccessor(linearClass, vec3Class);
+        STEPPED_CONSTRUCTOR = Accessors.getConstructorAccessor(STEPPED_CLASS, List.class);
+        STEP_CONSTRUCTOR = Accessors.getConstructorAccessor(stepClass, vec3Class, int.class);
+
+        LINEAR_MODIFIER = new StructureModifier<>(linearClass);
+        STEPPED_MODIFIER = new StructureModifier<>(STEPPED_CLASS);
+        STEP_MODIFIER = new StructureModifier<>(stepClass);
+        initialized = true;
+    }
+
+    private static Field getListField(Class<?> clazz) {
+        for (Field field : clazz.getDeclaredFields()) {
+            if (List.class.equals(field.getType())) {
+                return field;
+            }
+        }
+        return null;
+    }
+
+    public static WrappedPositionPath fromHandle(Object handle) {
+        return new WrappedPositionPath(handle);
+    }
+
+    /**
+     * Creates a linear path.
+     *
+     * @param position - the absolute position.
+     * @return the path.
+     */
+    public static WrappedPositionPath linear(Vector position) {
+        Preconditions.checkNotNull(position, "position cannot be NULL");
+        initialize();
+        return new WrappedPositionPath(LINEAR_CONSTRUCTOR.invoke(BukkitConverters.getVectorConverter().getGeneric(position)));
+    }
+
+    /**
+     * Creates a stepped path ending at the position of the last step.
+     *
+     * @param steps - the steps in order, must not be empty.
+     * @return the path.
+     */
+    public static WrappedPositionPath stepped(List<Step> steps) {
+        Preconditions.checkArgument(steps != null && !steps.isEmpty(), "steps cannot be empty");
+        initialize();
+
+        EquivalentConverter<Vector> vectorConverter = BukkitConverters.getVectorConverter();
+        List<Object> handles = new ArrayList<>(steps.size());
+        for (Step step : steps) {
+            handles.add(STEP_CONSTRUCTOR.invoke(vectorConverter.getGeneric(step.getPosition()), step.getTickOffset()));
+        }
+
+        return new WrappedPositionPath(STEPPED_CONSTRUCTOR.invoke(Collections.unmodifiableList(handles)));
+    }
+
+    public boolean isStepped() {
+        initialize();
+        return STEPPED_CLASS.isInstance(handle);
+    }
+
+    /**
+     * @return the final position of the path.
+     */
+    public Vector getEndPosition() {
+        StructureModifier<Object> modifier = isStepped() ? STEPPED_MODIFIER : LINEAR_MODIFIER;
+        return modifier.withTarget(handle)
+                .withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter())
+                .read(0);
+    }
+
+    /**
+     * @return the steps of a stepped path.
+     * @throws IllegalStateException if the path is linear.
+     */
+    public List<Step> getSteps() {
+        Preconditions.checkState(isStepped(), "Linear paths have no steps");
+
+        List<?> handles = STEPPED_MODIFIER.withTarget(handle).<List<?>>withType(List.class).read(0);
+        List<Step> steps = new ArrayList<>(handles.size());
+        for (Object stepHandle : handles) {
+            StructureModifier<Object> step = STEP_MODIFIER.withTarget(stepHandle);
+            Vector position = step.withType(MinecraftReflection.getVec3DClass(), BukkitConverters.getVectorConverter()).read(0);
+            steps.add(new Step(position, step.<Integer>withType(int.class).read(0)));
+        }
+
+        return Collections.unmodifiableList(steps);
+    }
+
+    public static EquivalentConverter<WrappedPositionPath> getConverter() {
+        return Converters.ignoreNull(Converters.handle(AbstractWrapper::getHandle,
+                WrappedPositionPath::fromHandle, WrappedPositionPath.class));
+    }
+
+    public static final class Step {
+
+        private final Vector position;
+        private final int tickOffset;
+
+        public Step(Vector position, int tickOffset) {
+            this.position = Preconditions.checkNotNull(position, "position cannot be NULL").clone();
+            this.tickOffset = tickOffset;
+        }
+
+        public Vector getPosition() {
+            return position.clone();
+        }
+
+        public int getTickOffset() {
+            return tickOffset;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) return true;
+            if (!(obj instanceof Step)) return false;
+
+            Step that = (Step) obj;
+            return tickOffset == that.tickOffset && position.equals(that.position);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(position, tickOffset);
+        }
+
+        @Override
+        public String toString() {
+            return "Step[position=" + position + ", tickOffset=" + tickOffset + "]";
+        }
+    }
+}

src/main/java/com/comphenix/protocol/wrappers/WrappedRegistry.java

@@ -1,5 +1,14 @@
 package com.comphenix.protocol.wrappers;
 
+import com.comphenix.protocol.reflect.FuzzyReflection;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.MethodAccessor;
+import com.comphenix.protocol.reflect.fuzzy.FuzzyMatchers;
+import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
+import com.comphenix.protocol.utility.MinecraftReflection;
+import com.comphenix.protocol.utility.MinecraftVersion;
+import com.google.common.collect.ImmutableMap;
+
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
 import java.lang.reflect.ParameterizedType;
@@ -10,79 +19,21 @@ import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
 
-import com.comphenix.protocol.reflect.FuzzyReflection;
-import com.comphenix.protocol.reflect.accessors.Accessors;
-import com.comphenix.protocol.reflect.accessors.MethodAccessor;
-import com.comphenix.protocol.reflect.fuzzy.FuzzyMatchers;
-import com.comphenix.protocol.reflect.fuzzy.FuzzyMethodContract;
-import com.comphenix.protocol.utility.MinecraftReflection;
-import com.comphenix.protocol.utility.MinecraftVersion;
-
-import com.google.common.collect.ImmutableMap;
-
 public class WrappedRegistry {
     // map of NMS class to registry instance
-    private static final Map<Class<?>, WrappedRegistry> BY_CLASS;
-    private static final Map<String, WrappedRegistry> BY_KEY;
+    private static final Map<Class<?>, WrappedRegistry> REGISTRY;
 
-    private static final MethodAccessor GET_BY_KEY;
-    private static final MethodAccessor GET_ITEM_ID;
-    private static final MethodAccessor GET_ITEM_KEY;
-    private static final MethodAccessor GET_REGISTRY_KEY;
+    private static final MethodAccessor GET;
+    private static final MethodAccessor GET_ID;
+    private static final MethodAccessor GET_KEY;
 
     private static final MethodAccessor GET_HOLDER;
 
     static {
-        Class<?> iRegistry = MinecraftReflection.getIRegistry();
-        FuzzyReflection fuzzy = FuzzyReflection.fromClass(iRegistry, false);
-
-        GET_BY_KEY = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
-            .newBuilder()
-            .parameterCount(1)
-            .returnTypeMatches(FuzzyMatchers.and(FuzzyMatchers.assignable(Object.class), FuzzyMatchers.except(Optional.class)))
-            .requireModifier(Modifier.ABSTRACT)
-            .parameterExactType(MinecraftReflection.getMinecraftKeyClass())
-            .build()));
-        GET_ITEM_ID = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
-            .newBuilder()
-            .parameterCount(1)
-            .returnTypeExact(int.class)
-            .requireModifier(Modifier.ABSTRACT)
-            .parameterDerivedOf(Object.class)
-            .build()));
-        GET_ITEM_KEY = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
-            .newBuilder()
-            .parameterCount(1)
-            .returnTypeExact(MinecraftReflection.getMinecraftKeyClass())
-            .build()));
-        GET_REGISTRY_KEY = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
-            .newBuilder()
-            .parameterCount(0)
-            .returnTypeExact(MinecraftReflection.getResourceKey())
-            .build()));
-
-        MethodAccessor getHolder = null;
-
-        if (MinecraftVersion.FEATURE_PREVIEW_UPDATE.atOrAbove()) {
-            try {
-                getHolder = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
-                    .newBuilder()
-                    .parameterCount(1)
-                    .banModifier(Modifier.STATIC)
-                    .returnTypeExact(MinecraftReflection.getHolderClass())
-                    .requireModifier(Modifier.PUBLIC)
-                    .build()));
-            } catch (IllegalArgumentException ignored) {
-            }
-        }
-
-        GET_HOLDER = getHolder;
-
-        Map<Class<?>, WrappedRegistry> byClass = new HashMap<>();
-        Map<String, WrappedRegistry> byKey = new HashMap<>();
+        Map<Class<?>, WrappedRegistry> regMap = new HashMap<>();
 
         // get the possible registry fields
-
+        Class<?> iRegistry = MinecraftReflection.getIRegistry();
         Class<?> builtInRegistries = MinecraftReflection.getBuiltInRegistries();
         Set<Field> registries = FuzzyReflection.combineArrays(
                 iRegistry == null ? null : iRegistry.getFields(),
@@ -92,75 +43,95 @@ public class WrappedRegistry {
             for (Field field : registries) {
                 try {
                     // make sure it's actually a registry
-                    if (!iRegistry.isAssignableFrom(field.getType())) {
-                        continue;
-                    }
+                    if (iRegistry.isAssignableFrom(field.getType())) {
+                        Type genType = field.getGenericType();
+                        if (genType instanceof ParameterizedType) {
+                            ParameterizedType par = (ParameterizedType) genType;
+                            Type paramType = par.getActualTypeArguments()[0];
+                            if (paramType instanceof Class) {
+                                // for example Registry<Item>
+                                regMap.put((Class<?>) paramType, new WrappedRegistry(field.get(null)));
+                            } else if (paramType instanceof ParameterizedType) {
+                                // for example Registry<EntityType<?>>
+                                par = (ParameterizedType) paramType;
+                                paramType = par.getActualTypeArguments()[0];
+                                if (paramType instanceof WildcardType) {
+                                    // some registry types are even more nested, but we don't want them
+                                    // for example Registry<Codec<ChunkGenerator>>, Registry<Codec<WorldChunkManager>>
+                                    WildcardType wildcard = (WildcardType) paramType;
+                                    if (wildcard.getUpperBounds().length != 1 || wildcard.getLowerBounds().length > 0) {
+                                        continue;
+                                    }
 
-                    Type genType = field.getGenericType();
-                    if (!(genType instanceof ParameterizedType par)) {
-                        continue;
-                    }
+                                    // we only want types with an undefined upper bound (aka. ?)
+                                    if (wildcard.getUpperBounds()[0] != Object.class) {
+                                        continue;
+                                    }
+                                }
 
-                    Class<?> registryClass = null;
-
-                    Type paramType = par.getActualTypeArguments()[0];
-                    if (paramType instanceof Class<?> paramClass) {
-                        // for example Registry<Item>
-                        registryClass = paramClass;
-                    } else if (paramType instanceof ParameterizedType) {
-                        // for example Registry<EntityType<?>>
-                        par = (ParameterizedType) paramType;
-                        paramType = par.getActualTypeArguments()[0];
-                        if (paramType instanceof WildcardType wildcard) {
-                            // some registry types are even more nested, but we don't want them
-                            // for example Registry<Codec<ChunkGenerator>>, Registry<Codec<WorldChunkManager>>
-                            if (wildcard.getUpperBounds().length != 1 || wildcard.getLowerBounds().length > 0) {
-                                continue;
-                            }
-
-                            // we only want types with an undefined upper bound (aka. ?)
-                            if (wildcard.getUpperBounds()[0] != Object.class) {
-                                continue;
+                                paramType = par.getRawType();
+                                if (paramType instanceof Class<?>) {
+                                    // there might be duplicate registries, like the codec registries
+                                    // we don't want them to be registered here
+                                    regMap.put((Class<?>) paramType, new WrappedRegistry(field.get(null)));
+                                }
                             }
                         }
-
-                        paramType = par.getRawType();
-                        if (paramType instanceof Class<?> paramClass) {
-                            // there might be duplicate registries, like the codec registries
-                            // we don't want them to be registered here
-                            registryClass = paramClass;
-                        }
                     }
-
-                    Object handle = field.get(null);
-                    ResourceKey key = ResourceKey.fromGeneric(GET_REGISTRY_KEY.invoke(handle));
-                    WrappedRegistry wrapped = new WrappedRegistry(handle, key);
-
-                    if (registryClass != null) {
-                        byClass.put(registryClass, wrapped);
-                    }
-
-                    String registryName = key.getLocation().getFullKey();
-                    byKey.put(registryName, wrapped);
                 } catch (ReflectiveOperationException ignored) {
                 }
             }
         }
 
-        BY_CLASS = ImmutableMap.copyOf(byClass);
-        BY_KEY = ImmutableMap.copyOf(byKey);
+        REGISTRY = ImmutableMap.copyOf(regMap);
+
+        FuzzyReflection fuzzy = FuzzyReflection.fromClass(iRegistry, false);
+        GET = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
+                .newBuilder()
+                .parameterCount(1)
+                .returnTypeMatches(FuzzyMatchers.and(FuzzyMatchers.assignable(Object.class), FuzzyMatchers.except(Optional.class)))
+                .requireModifier(Modifier.ABSTRACT)
+                .parameterExactType(MinecraftReflection.getMinecraftKeyClass())
+                .build()));
+        GET_ID = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
+                .newBuilder()
+                .parameterCount(1)
+                .returnTypeExact(int.class)
+                .requireModifier(Modifier.ABSTRACT)
+                .parameterDerivedOf(Object.class)
+                .build()));
+        GET_KEY = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
+                .newBuilder()
+                .parameterCount(1)
+                .returnTypeExact(MinecraftReflection.getMinecraftKeyClass())
+                .build()));
+
+        MethodAccessor getHolder = null;
+
+        if (MinecraftVersion.FEATURE_PREVIEW_UPDATE.atOrAbove()) {
+            try {
+                getHolder = Accessors.getMethodAccessor(fuzzy.getMethod(FuzzyMethodContract
+                        .newBuilder()
+                        .parameterCount(1)
+                        .banModifier(Modifier.STATIC)
+                        .returnTypeExact(MinecraftReflection.getHolderClass())
+                        .requireModifier(Modifier.PUBLIC)
+                        .build()));
+            } catch (IllegalArgumentException ignored) {
+            }
+        }
+
+        GET_HOLDER = getHolder;
     }
 
     private final Object handle;
-    private final ResourceKey key;
 
-    private WrappedRegistry(Object handle, ResourceKey key) {
+    private WrappedRegistry(Object handle) {
         this.handle = handle;
-        this.key = key;
     }
 
     public Object get(MinecraftKey key) {
-        return GET_BY_KEY.invoke(handle, MinecraftKey.getConverter().getGeneric(key));
+        return GET.invoke(handle, MinecraftKey.getConverter().getGeneric(key));
     }
 
     public Object get(String key) {
@@ -168,11 +139,7 @@ public class WrappedRegistry {
     }
 
     public MinecraftKey getKey(Object generic) {
-        return MinecraftKey.getConverter().getSpecific(GET_ITEM_KEY.invoke(handle, generic));
-    }
-
-    public ResourceKey getKey() {
-        return key;
+        return MinecraftKey.getConverter().getSpecific(GET_KEY.invoke(handle, generic));
     }
 
     public int getId(MinecraftKey key) {
@@ -184,7 +151,7 @@ public class WrappedRegistry {
     }
 
     public int getId(Object entry) {
-        return (int) GET_ITEM_ID.invoke(this.handle, entry);
+        return (int) GET_ID.invoke(this.handle, entry);
     }
 
     public Object getHolder(Object generic) {
@@ -203,15 +170,7 @@ public class WrappedRegistry {
         return getRegistry(MinecraftReflection.getSoundEffectClass());
     }
 
-    public static WrappedRegistry getDataComponentTypeRegistry() {
-        return getByKey("minecraft:data_component_type");
-    }
-
     public static WrappedRegistry getRegistry(Class<?> type) {
-        return BY_CLASS.get(type);
-    }
-
-    public static WrappedRegistry getByKey(String key) {
-        return BY_KEY.get(key);
+        return REGISTRY.get(type);
     }
 }

src/main/java/com/comphenix/protocol/wrappers/WrappedStatistic.java

@@ -16,15 +16,26 @@ import com.comphenix.protocol.utility.MinecraftReflection;
 public class WrappedStatistic extends AbstractWrapper {
     private static final Class<?> STATISTIC = MinecraftReflection.getStatisticClass();
     private static final Class<?> STATISTIC_LIST = MinecraftReflection.getStatisticListClass();
-
+    private static final FieldAccessor GET_NAME_FIELD;
+    private static final MethodAccessor GET_NAME_METHOD;
 
     static {
+        FieldAccessor[] nameFields = Accessors.getFieldAccessorArray(STATISTIC, String.class, true);
+        if (nameFields.length > 0) {
+            GET_NAME_FIELD = nameFields[0];
+            GET_NAME_METHOD = null;
+        } else {
+            GET_NAME_FIELD = null;
+            GET_NAME_METHOD = Accessors.getMethodAccessor(
+                    FuzzyReflection.fromClass(STATISTIC.getSuperclass(), true)
+                            .getMethodByReturnTypeAndParameters("getName", String.class));
+        }
+
         try {
             FIND_STATISTICS = Accessors.getMethodAccessor(
                     FuzzyReflection.fromClass(STATISTIC_LIST).getMethodByReturnTypeAndParameters(
                             "findStatistic", STATISTIC, new Class<?>[]{String.class}));
             MAP_ACCESSOR = Accessors.getFieldAccessor(STATISTIC_LIST, Map.class, true);
-            GET_NAME = Accessors.getFieldAccessor(STATISTIC, String.class, true);
         } catch (Exception ex) {
             // TODO - find an alternative
         }
@@ -32,7 +43,6 @@ public class WrappedStatistic extends AbstractWrapper {
 
     private static MethodAccessor FIND_STATISTICS;
     private static FieldAccessor MAP_ACCESSOR;
-    private static FieldAccessor GET_NAME;
     
     private final String name;
     
@@ -40,7 +50,9 @@ public class WrappedStatistic extends AbstractWrapper {
         super(STATISTIC);
         setHandle(handle);
         
-        this.name = (String) GET_NAME.get(handle);
+        this.name = GET_NAME_FIELD != null
+                ? (String) GET_NAME_FIELD.get(handle)
+                : (String) GET_NAME_METHOD.invoke(handle);
     }
     
     /**

src/main/java/com/comphenix/protocol/wrappers/WrappedTeamParameters.java

@@ -3,6 +3,8 @@ package com.comphenix.protocol.wrappers;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.Optional;
+
 import com.comphenix.protocol.injector.StructureCache;
 import com.comphenix.protocol.reflect.StructureModifier;
 import com.comphenix.protocol.utility.MinecraftReflection;
@@ -90,12 +92,26 @@ public class WrappedTeamParameters extends AbstractWrapper {
 
     @NotNull
     public EnumWrappers.ChatFormatting getColor() {
+        if (MinecraftVersion.v26_2.atOrAbove()) {
+            Optional<?> optional = modifier.<Optional<?>>withType(Optional.class).read(0);
+            Object teamColor = optional != null ? optional.orElse(null) : null;
+            if (teamColor == null) {
+                return EnumWrappers.ChatFormatting.RESET;
+            }
+
+            return EnumWrappers.ChatFormatting.valueOf(((Enum<?>) teamColor).name());
+        }
+
         return modifier
                 .withType(EnumWrappers.getChatFormattingClass(), EnumWrappers.getChatFormattingConverter())
                 .read(0);
     }
 
     public int getOptions() {
+        if (MinecraftVersion.v26_2.atOrAbove()) {
+            return (byte) modifier.withType(byte.class).read(0);
+        }
+
         return (int) modifier.withType(int.class).read(0);
     }
 
@@ -210,9 +226,27 @@ public class WrappedTeamParameters extends AbstractWrapper {
                 wrapped.modifier.withType(String.class).writeSafely(1, collisionRule.toString());
             }
 
-            wrapped.modifier.withType(EnumWrappers.getChatFormattingClass()).write(0, EnumWrappers.getChatFormattingConverter().getGeneric(color));
-            wrapped.modifier.withType(int.class).write(0, options);
+            if (MinecraftVersion.v26_2.atOrAbove()) {
+                wrapped.modifier.withType(Optional.class).write(0, Optional.ofNullable(toNmsTeamColor(color)));
+                wrapped.modifier.withType(byte.class).write(0, (byte) options);
+            } else {
+                wrapped.modifier.withType(EnumWrappers.getChatFormattingClass()).write(0, EnumWrappers.getChatFormattingConverter().getGeneric(color));
+                wrapped.modifier.withType(int.class).write(0, options);
+            }
             return wrapped;
         }
+
+        @SuppressWarnings({"unchecked", "rawtypes"})
+        private static Object toNmsTeamColor(EnumWrappers.ChatFormatting color) {
+            Class<?> teamColorClass = MinecraftReflection.getTeamColorClass()
+                    .orElseThrow(() -> new IllegalStateException("TeamColor class doesn't exist on this server version"));
+
+            try {
+                return Enum.valueOf((Class) teamColorClass, color.name());
+            } catch (IllegalArgumentException ex) {
+                // formatting-only values (e.g. RESET) don't map to a team color
+                return null;
+            }
+        }
     }
 }

src/main/java/com/comphenix/protocol/wrappers/WrappedVecDelta.java

@@ -0,0 +1,237 @@
+package com.comphenix.protocol.wrappers;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.ParameterizedType;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Objects;
+
+import com.comphenix.protocol.reflect.EquivalentConverter;
+import com.comphenix.protocol.reflect.StructureModifier;
+import com.comphenix.protocol.reflect.accessors.Accessors;
+import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
+import com.comphenix.protocol.utility.MinecraftReflection;
+
+import com.google.common.base.Preconditions;
+
+/**
+ * Wrapper around the NMS {@code VecDelta} type, introduced in Minecraft 26.3.
+ * <p>
+ * Used by {@code REL_ENTITY_MOVE} and {@code REL_ENTITY_MOVE_LOOK} to store the position change. A delta is either
+ * linear (a single offset) or stepped (several offsets reached at given ticks). Offsets use the same encoding as the
+ * short fields of older versions.
+ * <pre>{@code
+ * packet.getVecDeltas().write(0, WrappedVecDelta.linear(deltaX, deltaY, deltaZ));
+ * }</pre>
+ */
+public final class WrappedVecDelta extends AbstractWrapper {
+
+    private static Class<?> STEPPED_CLASS;
+
+    private static ConstructorAccessor LINEAR_CONSTRUCTOR;
+    private static ConstructorAccessor STEPPED_CONSTRUCTOR;
+    private static ConstructorAccessor STEP_CONSTRUCTOR;
+
+    private static StructureModifier<Object> LINEAR_MODIFIER;
+    private static StructureModifier<Object> STEPPED_MODIFIER;
+    private static StructureModifier<Object> STEP_MODIFIER;
+
+    private static volatile boolean initialized;
+
+    private WrappedVecDelta(Object handle) {
+        super(getVecDeltaClass());
+        setHandle(handle);
+    }
+
+    private static Class<?> getVecDeltaClass() {
+        return MinecraftReflection.getVecDeltaClass()
+                .orElseThrow(() -> new UnsupportedOperationException("VecDelta requires Minecraft 26.3 or newer"));
+    }
+
+    private static void initialize() {
+        if (initialized) {
+            return;
+        }
+
+        Class<?> vecDeltaClass = getVecDeltaClass();
+        Class<?> linearClass = null;
+        Class<?> stepClass = null;
+
+        for (Class<?> nested : vecDeltaClass.getDeclaredClasses()) {
+            if (!vecDeltaClass.isAssignableFrom(nested)) {
+                continue;
+            }
+
+            Field steps = getListField(nested);
+            if (steps != null) {
+                STEPPED_CLASS = nested;
+                stepClass = (Class<?>) ((ParameterizedType) steps.getGenericType()).getActualTypeArguments()[0];
+            } else {
+                linearClass = nested;
+            }
+        }
+
+        Preconditions.checkState(linearClass != null && STEPPED_CLASS != null, "Unable to find VecDelta implementations");
+
+        LINEAR_CONSTRUCTOR = Accessors.getConstructorAccessor(linearClass, short.class, short.class, short.class);
+        STEPPED_CONSTRUCTOR = Accessors.getConstructorAccessor(STEPPED_CLASS, List.class);
+        STEP_CONSTRUCTOR = Accessors.getConstructorAccessor(stepClass, short.class, short.class, short.class, int.class);
+
+        LINEAR_MODIFIER = new StructureModifier<>(linearClass);
+        STEPPED_MODIFIER = new StructureModifier<>(STEPPED_CLASS);
+        STEP_MODIFIER = new StructureModifier<>(stepClass);
+        initialized = true;
+    }
+
+    private static Field getListField(Class<?> clazz) {
+        for (Field field : clazz.getDeclaredFields()) {
+            if (List.class.equals(field.getType())) {
+                return field;
+            }
+        }
+        return null;
+    }
+
+    public static WrappedVecDelta fromHandle(Object handle) {
+        return new WrappedVecDelta(handle);
+    }
+
+    /**
+     * Creates a linear delta.
+     *
+     * @param deltaX - the encoded x offset.
+     * @param deltaY - the encoded y offset.
+     * @param deltaZ - the encoded z offset.
+     * @return the delta.
+     */
+    public static WrappedVecDelta linear(short deltaX, short deltaY, short deltaZ) {
+        initialize();
+        return new WrappedVecDelta(LINEAR_CONSTRUCTOR.invoke(deltaX, deltaY, deltaZ));
+    }
+
+    /**
+     * Creates a stepped delta.
+     *
+     * @param steps - the steps in order, must not be empty.
+     * @return the delta.
+     */
+    public static WrappedVecDelta stepped(List<Step> steps) {
+        Preconditions.checkArgument(steps != null && !steps.isEmpty(), "steps cannot be empty");
+        initialize();
+
+        List<Object> handles = new ArrayList<>(steps.size());
+        for (Step step : steps) {
+            handles.add(STEP_CONSTRUCTOR.invoke(step.getDeltaX(), step.getDeltaY(), step.getDeltaZ(), step.getTicks()));
+        }
+
+        return new WrappedVecDelta(STEPPED_CONSTRUCTOR.invoke(Collections.unmodifiableList(handles)));
+    }
+
+    public boolean isStepped() {
+        initialize();
+        return STEPPED_CLASS.isInstance(handle);
+    }
+
+    /**
+     * @return the encoded x offset of a linear delta.
+     * @throws IllegalStateException if the delta is stepped.
+     */
+    public short getDeltaX() {
+        return readLinear(0);
+    }
+
+    /**
+     * @return the encoded y offset of a linear delta.
+     * @throws IllegalStateException if the delta is stepped.
+     */
+    public short getDeltaY() {
+        return readLinear(1);
+    }
+
+    /**
+     * @return the encoded z offset of a linear delta.
+     * @throws IllegalStateException if the delta is stepped.
+     */
+    public short getDeltaZ() {
+        return readLinear(2);
+    }
+
+    private short readLinear(int index) {
+        Preconditions.checkState(!isStepped(), "Stepped deltas have no single offset");
+        return LINEAR_MODIFIER.withTarget(handle).<Short>withType(short.class).read(index);
+    }
+
+    /**
+     * @return the steps of a stepped delta.
+     * @throws IllegalStateException if the delta is linear.
+     */
+    public List<Step> getSteps() {
+        Preconditions.checkState(isStepped(), "Linear deltas have no steps");
+
+        List<?> handles = STEPPED_MODIFIER.withTarget(handle).<List<?>>withType(List.class).read(0);
+        List<Step> steps = new ArrayList<>(handles.size());
+        for (Object stepHandle : handles) {
+            StructureModifier<Object> step = STEP_MODIFIER.withTarget(stepHandle);
+            StructureModifier<Short> shorts = step.withType(short.class);
+            steps.add(new Step(shorts.read(0), shorts.read(1), shorts.read(2), step.<Integer>withType(int.class).read(0)));
+        }
+
+        return Collections.unmodifiableList(steps);
+    }
+
+    public static EquivalentConverter<WrappedVecDelta> getConverter() {
+        return Converters.ignoreNull(Converters.handle(AbstractWrapper::getHandle,
+                WrappedVecDelta::fromHandle, WrappedVecDelta.class));
+    }
+
+    public static final class Step {
+
+        private final short deltaX;
+        private final short deltaY;
+        private final short deltaZ;
+        private final int ticks;
+
+        public Step(short deltaX, short deltaY, short deltaZ, int ticks) {
+            this.deltaX = deltaX;
+            this.deltaY = deltaY;
+            this.deltaZ = deltaZ;
+            this.ticks = ticks;
+        }
+
+        public short getDeltaX() {
+            return deltaX;
+        }
+
+        public short getDeltaY() {
+            return deltaY;
+        }
+
+        public short getDeltaZ() {
+            return deltaZ;
+        }
+
+        public int getTicks() {
+            return ticks;
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) return true;
+            if (!(obj instanceof Step)) return false;
+
+            Step that = (Step) obj;
+            return deltaX == that.deltaX && deltaY == that.deltaY && deltaZ == that.deltaZ && ticks == that.ticks;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(deltaX, deltaY, deltaZ, ticks);
+        }
+
+        @Override
+        public String toString() {
+            return "Step[deltaX=" + deltaX + ", deltaY=" + deltaY + ", deltaZ=" + deltaZ + ", ticks=" + ticks + "]";
+        }
+    }
+}

src/main/java/com/comphenix/protocol/wrappers/nbt/io/NbtTextSerializer.java

@@ -5,8 +5,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;
-
-import org.yaml.snakeyaml.external.biz.base64Coder.Base64Coder;
+import java.util.Base64;
 
 import com.comphenix.protocol.wrappers.nbt.NbtBase;
 import com.comphenix.protocol.wrappers.nbt.NbtCompound;
@@ -23,7 +22,7 @@ public class NbtTextSerializer {
      * A default instance of this serializer.
      */
     public static final NbtTextSerializer DEFAULT = new NbtTextSerializer();
-    
+
     private NbtBinarySerializer binarySerializer;
     
     public NbtTextSerializer() {
@@ -59,7 +58,7 @@ public class NbtTextSerializer {
          binarySerializer.serialize(value, dataOutput);
          
          // Serialize that array
-         return Base64Coder.encodeLines(outputStream.toByteArray());
+         return Base64.getEncoder().encodeToString(outputStream.toByteArray());
     }
     
     /**
@@ -70,7 +69,7 @@ public class NbtTextSerializer {
      * @throws IOException If we are unable to parse the input.
      */
     public <TType> NbtWrapper<TType> deserialize(String input) throws IOException {
-        ByteArrayInputStream inputStream = new ByteArrayInputStream(Base64Coder.decodeLines(input));
+        ByteArrayInputStream inputStream = new ByteArrayInputStream(Base64.getDecoder().decode(input));
         
         return binarySerializer.deserialize(new DataInputStream(inputStream));
     }

src/main/java/com/comphenix/protocol/wrappers/ping/ServerPingRecord.java

@@ -7,6 +7,8 @@ import com.comphenix.protocol.reflect.accessors.Accessors;
 import com.comphenix.protocol.reflect.accessors.ConstructorAccessor;
 import com.comphenix.protocol.reflect.accessors.FieldAccessor;
 import com.comphenix.protocol.reflect.accessors.MethodAccessor;
+import com.comphenix.protocol.reflect.instances.DefaultInstances;
+import com.comphenix.protocol.reflect.instances.MinecraftGenerator;
 import com.comphenix.protocol.utility.MinecraftProtocolVersion;
 import com.comphenix.protocol.utility.MinecraftReflection;
 import com.comphenix.protocol.utility.MinecraftVersion;
@@ -23,6 +25,7 @@ public final class ServerPingRecord implements ServerPingImpl {
     private static Class<?> SERVER_PING;
     private static Class<?> PLAYER_SAMPLE_CLASS;
     private static Class<?> SERVER_DATA_CLASS;
+    private static Class<?> NAME_AND_ID_CLASS;
 
     private static Class<?> GSON_CLASS;
     private static MethodAccessor GSON_TO_JSON;
@@ -56,13 +59,37 @@ public final class ServerPingRecord implements ServerPingImpl {
                 PLAYER_SAMPLE_CLASS = MinecraftReflection.getServerPingPlayerSampleClass();
                 SERVER_DATA_CLASS = MinecraftReflection.getServerPingServerDataClass();
 
-                PING_CTOR = Accessors.getConstructorAccessor(SERVER_PING.getConstructors()[0]);
+                PING_CTOR = Accessors.getConstructorAccessor(SERVER_PING, MinecraftReflection.getIChatBaseComponentClass(), Optional.class, Optional.class, Optional.class, boolean.class);
 
                 DATA_WRAPPER = AutoWrapper.wrap(ServerData.class, SERVER_DATA_CLASS);
                 SAMPLE_WRAPPER = AutoWrapper.wrap(PlayerSample.class, PLAYER_SAMPLE_CLASS);
                 FAVICON_WRAPPER = AutoWrapper.wrap(Favicon.class, MinecraftReflection.getMinecraftClass("network.protocol.status.ServerPing$a", "network.protocol.status.ServerStatus$Favicon"));
 
-                PROFILE_LIST_CONVERTER = BukkitConverters.getListConverter(BukkitConverters.getWrappedGameProfileConverter());
+                if (MinecraftVersion.v1_21_10.atOrAbove()) {
+                    NAME_AND_ID_CLASS = MinecraftReflection.getMinecraftClass("server.players.NameAndId");
+                    NAME_AND_ID_WRAPPER = AutoWrapper.wrap(NameAndId.class, NAME_AND_ID_CLASS);
+
+                    PROFILE_LIST_CONVERTER = BukkitConverters.getListConverter(new EquivalentConverter<>() {
+                        @Override
+                        public Object getGeneric(WrappedGameProfile specific) {
+                            NameAndId wrapper = new NameAndId(specific.getUUID(), specific.getName());
+                            return NAME_AND_ID_WRAPPER.getGeneric(wrapper);
+                        }
+
+                        @Override
+                        public WrappedGameProfile getSpecific(Object generic) {
+                            NameAndId wrapper = NAME_AND_ID_WRAPPER.getSpecific(generic);
+                            return new WrappedGameProfile(wrapper.id, wrapper.name);
+                        }
+
+                        @Override
+                        public Class<WrappedGameProfile> getSpecificType() {
+                            return WrappedGameProfile.class;
+                        }
+                    });
+                } else {
+                    PROFILE_LIST_CONVERTER = BukkitConverters.getListConverter(BukkitConverters.getWrappedGameProfileConverter());
+                }
 
                 DEFAULT_DESCRIPTION = WrappedChatComponent.fromLegacyText("A Minecraft Server");
 
@@ -124,11 +151,24 @@ public final class ServerPingRecord implements ServerPingImpl {
         }
     }
 
+    public static final class NameAndId {
+        public UUID id;
+        public String name;
+
+        public NameAndId(UUID id, String name) {
+            this.id = id;
+            this.name = name;
+        }
+
+        public NameAndId() {
+            this(MinecraftGenerator.SYS_UUID, "");
+        }
+    }
+
     private static AutoWrapper<PlayerSample> SAMPLE_WRAPPER;
-
     private static AutoWrapper<ServerData> DATA_WRAPPER;
-
     private static AutoWrapper<Favicon> FAVICON_WRAPPER;
+    private static AutoWrapper<NameAndId> NAME_AND_ID_WRAPPER;
 
     private WrappedChatComponent description;
     private PlayerSample playerSample;

src/main/resources/paper-plugin.yml

@@ -1,6 +0,0 @@
-name: ProtocolLib
-version: ${version}
-main: com.comphenix.protocol.ProtocolLibPaper
-api-version: '1.21.8'
-website: https://github.com/dmulloy2/ProtocolLib
-load: STARTUP