Paper/patches/server/0446-Optimize-NetworkManager-Exception-Handling.patch

45 lines
2.2 KiB
Diff
Raw Normal View History

2021-06-11 14:02:28 +02:00
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Sun, 5 Jul 2020 22:38:18 -0400
Subject: [PATCH] Optimize NetworkManager Exception Handling
diff --git a/src/main/java/net/minecraft/network/ConnectionProtocol.java b/src/main/java/net/minecraft/network/ConnectionProtocol.java
2023-03-15 00:29:38 +01:00
index a30fa3d54b70ab63d24dd67a69f39742335aff1e..a79da4bc0ed06ff8ede0a34f00194f927251099b 100644
2021-06-11 14:02:28 +02:00
--- a/src/main/java/net/minecraft/network/ConnectionProtocol.java
+++ b/src/main/java/net/minecraft/network/ConnectionProtocol.java
2023-03-14 20:54:57 +01:00
@@ -329,6 +329,7 @@ public enum ConnectionProtocol implements BundlerInfo.Provider {
2021-06-11 14:02:28 +02:00
@Nullable
2021-06-14 11:46:59 +02:00
public Packet<?> createPacket(int id, FriendlyByteBuf buf) {
+ if (id < 0 || id >= this.idToDeserializer.size()) return null; // Paper
Function<FriendlyByteBuf, ? extends Packet<T>> function = this.idToDeserializer.get(id);
return function != null ? function.apply(buf) : null;
}
2021-06-11 14:02:28 +02:00
diff --git a/src/main/java/net/minecraft/network/Varint21FrameDecoder.java b/src/main/java/net/minecraft/network/Varint21FrameDecoder.java
index 99b581052f937b0f2d6b5d73de699008c1d51774..81ec2011a93bb94200ad750f4666ba1cd8be11c5 100644
2021-06-11 14:02:28 +02:00
--- a/src/main/java/net/minecraft/network/Varint21FrameDecoder.java
+++ b/src/main/java/net/minecraft/network/Varint21FrameDecoder.java
@@ -8,9 +8,20 @@ import io.netty.handler.codec.CorruptedFrameException;
2021-06-14 11:46:59 +02:00
import java.util.List;
2021-06-11 14:02:28 +02:00
public class Varint21FrameDecoder extends ByteToMessageDecoder {
+ private final byte[] lenBuf = new byte[3]; // Paper
+ @Override
2021-06-14 11:46:59 +02:00
protected void decode(ChannelHandlerContext channelHandlerContext, ByteBuf byteBuf, List<Object> list) {
2021-06-11 14:02:28 +02:00
+ // Paper start - if channel is not active just discard the packet
2021-06-14 11:46:59 +02:00
+ if (!channelHandlerContext.channel().isActive()) {
+ byteBuf.skipBytes(byteBuf.readableBytes());
2021-06-11 14:02:28 +02:00
+ return;
+ }
+ // Paper end
2021-06-14 11:46:59 +02:00
byteBuf.markReaderIndex();
- byte[] bs = new byte[3];
2021-06-11 14:02:28 +02:00
+ // Paper start - reuse temporary length buffer
+ byte[] bs = lenBuf;
+ java.util.Arrays.fill(bs, (byte) 0);
2021-06-11 14:02:28 +02:00
+ // Paper end
2021-06-14 11:46:59 +02:00
for(int i = 0; i < bs.length; ++i) {
if (!byteBuf.isReadable()) {