Mirror von
https://github.com/PaperMC/Velocity.git
synchronisiert 2024-12-24 23:30:26 +01:00
Don't search through protocol versions all the time
Dieser Commit ist enthalten in:
kashike
Ursprung
39def54e96
Commit
b95f076562
@ -96,8 +96,8 @@ public final class ConnectionManager {
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.addLast(FRAME_DECODER, new MinecraftVarintFrameDecoder())
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.addLast(LEGACY_PING_ENCODER, LegacyPingEncoder.INSTANCE)
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.addLast(FRAME_ENCODER, MinecraftVarintLengthEncoder.INSTANCE)
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.addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.TO_SERVER))
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.addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.TO_CLIENT));
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.addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.SERVERBOUND))
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.addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.CLIENTBOUND));
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final MinecraftConnection connection = new MinecraftConnection(ch);
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connection.setState(StateRegistry.HANDSHAKE);
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@ -48,8 +48,8 @@ public class ServerConnection implements MinecraftConnectionAssociation {
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.addLast(READ_TIMEOUT, new ReadTimeoutHandler(SERVER_READ_TIMEOUT_SECONDS, TimeUnit.SECONDS))
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.addLast(FRAME_DECODER, new MinecraftVarintFrameDecoder())
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.addLast(FRAME_ENCODER, MinecraftVarintLengthEncoder.INSTANCE)
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.addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.TO_CLIENT))
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.addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.TO_SERVER));
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.addLast(MINECRAFT_DECODER, new MinecraftDecoder(ProtocolConstants.Direction.CLIENTBOUND))
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.addLast(MINECRAFT_ENCODER, new MinecraftEncoder(ProtocolConstants.Direction.SERVERBOUND));
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MinecraftConnection connection = new MinecraftConnection(ch);
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connection.setState(StateRegistry.HANDSHAKE);
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@ -14,7 +14,7 @@ public enum ProtocolConstants { ;
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}
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public enum Direction {
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TO_SERVER,
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TO_CLIENT
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SERVERBOUND,
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CLIENTBOUND
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}
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}
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@ -1,13 +1,10 @@
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package com.velocitypowered.proxy.protocol;
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import com.google.common.base.Preconditions;
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import com.google.common.collect.ImmutableList;
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import com.velocitypowered.proxy.protocol.packets.*;
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import io.netty.util.collection.IntObjectHashMap;
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import io.netty.util.collection.IntObjectMap;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.function.Supplier;
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@ -17,124 +14,127 @@ import static com.velocitypowered.proxy.protocol.ProtocolConstants.MINECRAFT_1_1
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public enum StateRegistry {
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HANDSHAKE {
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{
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TO_SERVER.register(Handshake.class, Handshake::new,
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SERVERBOUND.register(Handshake.class, Handshake::new,
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generic(0x00));
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}
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},
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STATUS {
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{
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TO_SERVER.register(StatusRequest.class, StatusRequest::new,
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SERVERBOUND.register(StatusRequest.class, StatusRequest::new,
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generic(0x00));
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TO_SERVER.register(Ping.class, Ping::new,
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SERVERBOUND.register(Ping.class, Ping::new,
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generic(0x01));
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TO_CLIENT.register(StatusResponse.class, StatusResponse::new,
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CLIENTBOUND.register(StatusResponse.class, StatusResponse::new,
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generic(0x00));
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TO_CLIENT.register(Ping.class, Ping::new,
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CLIENTBOUND.register(Ping.class, Ping::new,
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generic(0x01));
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}
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},
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PLAY {
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{
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TO_SERVER.register(Chat.class, Chat::new,
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SERVERBOUND.register(Chat.class, Chat::new,
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map(0x02, MINECRAFT_1_12));
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TO_SERVER.register(Ping.class, Ping::new,
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SERVERBOUND.register(Ping.class, Ping::new,
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map(0x0b, MINECRAFT_1_12));
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TO_CLIENT.register(Chat.class, Chat::new,
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CLIENTBOUND.register(Chat.class, Chat::new,
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map(0x0F, MINECRAFT_1_12));
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TO_CLIENT.register(Disconnect.class, Disconnect::new,
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CLIENTBOUND.register(Disconnect.class, Disconnect::new,
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map(0x1A, MINECRAFT_1_12));
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TO_CLIENT.register(Ping.class, Ping::new,
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CLIENTBOUND.register(Ping.class, Ping::new,
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map(0x1F, MINECRAFT_1_12));
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TO_CLIENT.register(JoinGame.class, JoinGame::new,
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CLIENTBOUND.register(JoinGame.class, JoinGame::new,
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map(0x23, MINECRAFT_1_12));
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TO_CLIENT.register(Respawn.class, Respawn::new,
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CLIENTBOUND.register(Respawn.class, Respawn::new,
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map(0x35, MINECRAFT_1_12));
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}
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},
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LOGIN {
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{
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TO_SERVER.register(ServerLogin.class, ServerLogin::new,
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SERVERBOUND.register(ServerLogin.class, ServerLogin::new,
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generic(0x00));
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TO_SERVER.register(EncryptionResponse.class, EncryptionResponse::new,
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SERVERBOUND.register(EncryptionResponse.class, EncryptionResponse::new,
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generic(0x01));
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TO_CLIENT.register(Disconnect.class, Disconnect::new,
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CLIENTBOUND.register(Disconnect.class, Disconnect::new,
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generic(0x00));
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TO_CLIENT.register(EncryptionRequest.class, EncryptionRequest::new,
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CLIENTBOUND.register(EncryptionRequest.class, EncryptionRequest::new,
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generic(0x01));
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TO_CLIENT.register(ServerLoginSuccess.class, ServerLoginSuccess::new,
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CLIENTBOUND.register(ServerLoginSuccess.class, ServerLoginSuccess::new,
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generic(0x02));
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TO_CLIENT.register(SetCompression.class, SetCompression::new,
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CLIENTBOUND.register(SetCompression.class, SetCompression::new,
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generic(0x03));
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}
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};
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public final PacketRegistry TO_CLIENT = new PacketRegistry(ProtocolConstants.Direction.TO_CLIENT, this);
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public final PacketRegistry TO_SERVER = new PacketRegistry(ProtocolConstants.Direction.TO_SERVER, this);
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public final PacketRegistry CLIENTBOUND = new PacketRegistry(ProtocolConstants.Direction.CLIENTBOUND);
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public final PacketRegistry SERVERBOUND = new PacketRegistry(ProtocolConstants.Direction.SERVERBOUND);
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public static class PacketRegistry {
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private final ProtocolConstants.Direction direction;
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private final StateRegistry state;
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private final IntObjectMap<IntObjectMap<Supplier<? extends MinecraftPacket>>> byProtocolVersionToProtocolIds = new IntObjectHashMap<>();
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private final Map<Class<? extends MinecraftPacket>, List<PacketMapping>> idMappers = new HashMap<>();
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private final IntObjectMap<ProtocolVersion> versions = new IntObjectHashMap<>();
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public PacketRegistry(ProtocolConstants.Direction direction, StateRegistry state) {
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public PacketRegistry(ProtocolConstants.Direction direction) {
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this.direction = direction;
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this.state = state;
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}
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public ProtocolVersion getVersion(final int version) {
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ProtocolVersion result = null;
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for (final IntObjectMap.PrimitiveEntry<ProtocolVersion> entry : this.versions.entries()) {
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if (entry.key() <= version) {
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result = entry.value();
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}
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}
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if (result == null) {
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throw new IllegalArgumentException("Could not find data for protocol version " + version);
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}
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return result;
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}
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public <P extends MinecraftPacket> void register(Class<P> clazz, Supplier<P> packetSupplier, PacketMapping... mappings) {
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if (mappings.length == 0) {
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throw new IllegalArgumentException("At least one mapping must be provided.");
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}
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for (PacketMapping mapping : mappings) {
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IntObjectMap<Supplier<? extends MinecraftPacket>> ids = byProtocolVersionToProtocolIds.get(mapping.protocolVersion);
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if (ids == null) {
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byProtocolVersionToProtocolIds.put(mapping.protocolVersion, ids = new IntObjectHashMap<>());
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for (final PacketMapping mapping : mappings) {
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ProtocolVersion version = this.versions.get(mapping.protocolVersion);
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if (version == null) {
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version = new ProtocolVersion(mapping.protocolVersion);
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this.versions.put(mapping.protocolVersion, version);
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}
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ids.put(mapping.id, packetSupplier);
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version.packetIdToSupplier.put(mapping.id, packetSupplier);
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version.packetClassToId.put(clazz, mapping.id);
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}
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idMappers.put(clazz, ImmutableList.copyOf(mappings));
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}
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public MinecraftPacket createPacket(int id, int protocolVersion) {
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IntObjectMap<Supplier<? extends MinecraftPacket>> bestLookup = null;
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for (IntObjectMap.PrimitiveEntry<IntObjectMap<Supplier<? extends MinecraftPacket>>> entry : byProtocolVersionToProtocolIds.entries()) {
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if (entry.key() <= protocolVersion) {
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bestLookup = entry.value();
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}
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}
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if (bestLookup == null) {
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return null;
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}
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Supplier<? extends MinecraftPacket> supplier = bestLookup.get(id);
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if (supplier == null) {
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return null;
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}
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return supplier.get();
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}
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public class ProtocolVersion {
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public final int id;
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final IntObjectMap<Supplier<? extends MinecraftPacket>> packetIdToSupplier = new IntObjectHashMap<>();
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final Map<Class<? extends MinecraftPacket>, Integer> packetClassToId = new HashMap<>();
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public int getId(MinecraftPacket packet, int protocolVersion) {
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Preconditions.checkNotNull(packet, "packet");
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ProtocolVersion(final int id) {
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this.id = id;
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}
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List<PacketMapping> mappings = idMappers.get(packet.getClass());
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if (mappings == null || mappings.isEmpty()) {
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throw new IllegalArgumentException("Supplied packet " + packet.getClass().getName() +
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" doesn't have any mappings. Direction " + direction + " State " + state);
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}
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int useId = -1;
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for (PacketMapping mapping : mappings) {
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if (mapping.protocolVersion <= protocolVersion) {
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useId = mapping.id;
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public MinecraftPacket createPacket(final int id) {
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final Supplier<? extends MinecraftPacket> supplier = this.packetIdToSupplier.get(id);
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if (supplier == null) {
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return null;
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}
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return supplier.get();
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}
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if (useId == -1) {
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throw new IllegalArgumentException("Unable to find a mapping for " + packet.getClass().getName()
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+ " Version " + protocolVersion + " Direction " + direction + " State " + state);
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public int getPacketId(final MinecraftPacket packet) {
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final Integer id = this.packetClassToId.get(packet.getClass());
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if (id == null) {
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throw new IllegalArgumentException(String.format(
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"Unable to find id for packet of type %s in %s protocol %s",
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packet.getClass().getName(), PacketRegistry.this.direction, this.id
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));
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}
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return id;
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}
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return useId;
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}
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}
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@ -12,7 +12,7 @@ import java.util.List;
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public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf> {
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private StateRegistry state;
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private final ProtocolConstants.Direction direction;
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private int protocolVersion;
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private StateRegistry.PacketRegistry.ProtocolVersion protocolVersion;
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public MinecraftDecoder(ProtocolConstants.Direction direction) {
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this.state = StateRegistry.HANDSHAKE;
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@ -28,14 +28,13 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf> {
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ByteBuf slice = msg.slice().retain();
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int packetId = ProtocolUtils.readVarInt(msg);
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StateRegistry.PacketRegistry mappings = direction == ProtocolConstants.Direction.TO_CLIENT ? state.TO_CLIENT : state.TO_SERVER;
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MinecraftPacket packet = mappings.createPacket(packetId, protocolVersion);
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MinecraftPacket packet = this.protocolVersion.createPacket(packetId);
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if (packet == null) {
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msg.skipBytes(msg.readableBytes());
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out.add(new PacketWrapper(null, slice));
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} else {
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try {
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packet.decode(msg, direction, protocolVersion);
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packet.decode(msg, direction, protocolVersion.id);
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} catch (Exception e) {
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throw new CorruptedFrameException("Error decoding " + packet.getClass() + " Direction " + direction
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+ " Protocol " + protocolVersion + " State " + state + " ID " + Integer.toHexString(packetId), e);
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@ -44,12 +43,12 @@ public class MinecraftDecoder extends MessageToMessageDecoder<ByteBuf> {
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}
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}
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public int getProtocolVersion() {
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public StateRegistry.PacketRegistry.ProtocolVersion getProtocolVersion() {
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return protocolVersion;
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}
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public void setProtocolVersion(int protocolVersion) {
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this.protocolVersion = protocolVersion;
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this.protocolVersion = (this.direction == ProtocolConstants.Direction.CLIENTBOUND ? this.state.CLIENTBOUND : this.state.SERVERBOUND).getVersion(protocolVersion);
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}
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public StateRegistry getState() {
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@ -12,7 +12,7 @@ import io.netty.handler.codec.MessageToByteEncoder;
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public class MinecraftEncoder extends MessageToByteEncoder<MinecraftPacket> {
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private StateRegistry state;
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private final ProtocolConstants.Direction direction;
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private int protocolVersion;
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private StateRegistry.PacketRegistry.ProtocolVersion protocolVersion;
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public MinecraftEncoder(ProtocolConstants.Direction direction) {
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this.state = StateRegistry.HANDSHAKE;
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@ -20,19 +20,18 @@ public class MinecraftEncoder extends MessageToByteEncoder<MinecraftPacket> {
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}
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@Override
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protected void encode(ChannelHandlerContext ctx, MinecraftPacket msg, ByteBuf out) throws Exception {
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StateRegistry.PacketRegistry mappings = direction == ProtocolConstants.Direction.TO_CLIENT ? state.TO_CLIENT : state.TO_SERVER;
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int packetId = mappings.getId(msg, protocolVersion);
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protected void encode(ChannelHandlerContext ctx, MinecraftPacket msg, ByteBuf out) {
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int packetId = this.protocolVersion.getPacketId(msg);
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ProtocolUtils.writeVarInt(out, packetId);
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msg.encode(out, direction, protocolVersion);
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msg.encode(out, direction, protocolVersion.id);
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}
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public int getProtocolVersion() {
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public StateRegistry.PacketRegistry.ProtocolVersion getProtocolVersion() {
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return protocolVersion;
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}
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public void setProtocolVersion(int protocolVersion) {
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this.protocolVersion = protocolVersion;
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public void setProtocolVersion(final int protocolVersion) {
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this.protocolVersion = (this.direction == ProtocolConstants.Direction.CLIENTBOUND ? this.state.CLIENTBOUND : this.state.SERVERBOUND).getVersion(protocolVersion);
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}
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public StateRegistry getState() {
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@ -47,7 +47,7 @@ public class Chat implements MinecraftPacket {
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@Override
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public void decode(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion) {
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message = ProtocolUtils.readString(buf);
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if (direction == ProtocolConstants.Direction.TO_CLIENT) {
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if (direction == ProtocolConstants.Direction.CLIENTBOUND) {
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position = buf.readByte();
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}
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}
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@ -55,7 +55,7 @@ public class Chat implements MinecraftPacket {
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@Override
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public void encode(ByteBuf buf, ProtocolConstants.Direction direction, int protocolVersion) {
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ProtocolUtils.writeString(buf, message);
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if (direction == ProtocolConstants.Direction.TO_CLIENT) {
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if (direction == ProtocolConstants.Direction.CLIENTBOUND) {
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buf.writeByte(position);
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}
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}
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@ -8,7 +8,7 @@ import static org.junit.jupiter.api.Assertions.*;
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class PacketRegistryTest {
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private StateRegistry.PacketRegistry setupRegistry() {
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StateRegistry.PacketRegistry registry = new StateRegistry.PacketRegistry(ProtocolConstants.Direction.TO_CLIENT, StateRegistry.HANDSHAKE);
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StateRegistry.PacketRegistry registry = new StateRegistry.PacketRegistry(ProtocolConstants.Direction.CLIENTBOUND);
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registry.register(Handshake.class, Handshake::new, new StateRegistry.PacketMapping(0x00, 1));
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registry.register(Ping.class, Ping::new, new StateRegistry.PacketMapping(0x01, 1),
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new StateRegistry.PacketMapping(0x02, 5));
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@ -18,47 +18,47 @@ class PacketRegistryTest {
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@Test
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void packetRegistryWorks() {
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StateRegistry.PacketRegistry registry = setupRegistry();
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MinecraftPacket packet = registry.createPacket(0, 1);
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MinecraftPacket packet = registry.getVersion(1).createPacket(0);
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assertNotNull(packet, "Packet was not found in registry");
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assertEquals(Handshake.class, packet.getClass(), "Registry returned wrong class");
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assertEquals(0, registry.getId(packet, 1), "Registry did not return the correct packet ID");
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assertEquals(0, registry.getVersion(1).getPacketId(packet), "Registry did not return the correct packet ID");
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}
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@Test
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void packetRegistryRevertsToBestOldVersion() {
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StateRegistry.PacketRegistry registry = setupRegistry();
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MinecraftPacket packet = registry.createPacket(0, 2);
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MinecraftPacket packet = registry.getVersion(2).createPacket(0);
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assertNotNull(packet, "Packet was not found in registry");
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assertEquals(Handshake.class, packet.getClass(), "Registry returned wrong class");
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assertEquals(0, registry.getId(packet, 2), "Registry did not return the correct packet ID");
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assertEquals(0, registry.getVersion(2).getPacketId(packet), "Registry did not return the correct packet ID");
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}
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@Test
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void packetRegistryDoesntProvideNewPacketsForOld() {
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StateRegistry.PacketRegistry registry = setupRegistry();
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assertNull(registry.createPacket(0, 0), "Packet was found in registry despite being too new");
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assertNull(registry.getVersion(0).createPacket(0), "Packet was found in registry despite being too new");
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assertThrows(IllegalArgumentException.class, () -> registry.getId(new Handshake(), 0), "Registry provided new packets for an old protocol version");
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assertThrows(IllegalArgumentException.class, () -> registry.getVersion(0).getPacketId(new Handshake()), "Registry provided new packets for an old protocol version");
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}
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@Test
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void failOnNoMappings() {
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StateRegistry.PacketRegistry registry = new StateRegistry.PacketRegistry(ProtocolConstants.Direction.TO_CLIENT, StateRegistry.HANDSHAKE);
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StateRegistry.PacketRegistry registry = new StateRegistry.PacketRegistry(ProtocolConstants.Direction.CLIENTBOUND);
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assertThrows(IllegalArgumentException.class, () -> registry.register(Handshake.class, Handshake::new));
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assertThrows(IllegalArgumentException.class, () -> registry.getId(new Handshake(), 0));
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assertThrows(IllegalArgumentException.class, () -> registry.getVersion(0).getPacketId(new Handshake()));
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}
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@Test
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void packetRegistryProvidesCorrectVersionsForMultipleMappings() {
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StateRegistry.PacketRegistry registry = setupRegistry();
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assertNotNull(registry.createPacket(1, 1), "Packet was not found in registry despite being being registered with ID 1 and version 1");
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assertNotNull(registry.createPacket(1, 2), "Packet was not found in registry despite being being registered with ID 1 and version 1 (we are looking up version 2)");
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assertNotNull(registry.createPacket(2, 5), "Packet was not found in registry despite being being registered with ID 2 and version 5");
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assertNotNull(registry.createPacket(2, 6), "Packet was not found in registry despite being being registered with ID 2 and version 5 (we are looking up version 6)");
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assertNotNull(registry.getVersion(1).createPacket(1), "Packet was not found in registry despite being being registered with ID 1 and version 1");
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assertNotNull(registry.getVersion(2).createPacket(1), "Packet was not found in registry despite being being registered with ID 1 and version 1 (we are looking up version 2)");
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assertNotNull(registry.getVersion(5).createPacket(2), "Packet was not found in registry despite being being registered with ID 2 and version 5");
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assertNotNull(registry.getVersion(6).createPacket(2), "Packet was not found in registry despite being being registered with ID 2 and version 5 (we are looking up version 6)");
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||||
|
||||
assertEquals(1, registry.getId(new Ping(), 1), "Wrong ID provided from registry");
|
||||
assertEquals(2, registry.getId(new Ping(), 5), "Wrong ID provided from registry");
|
||||
assertEquals(1, registry.getVersion(1).getPacketId(new Ping()), "Wrong ID provided from registry");
|
||||
assertEquals(2, registry.getVersion(5).getPacketId(new Ping()), "Wrong ID provided from registry");
|
||||
}
|
||||
}
|
||||
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