97 Zeilen
5.0 KiB
Diff
97 Zeilen
5.0 KiB
Diff
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/EnumProtocol.java b/src/main/java/net/minecraft/network/EnumProtocol.java
|
|
index a892521db1197369bf6363bd2f5da24bf53643ab..46d8471ba98a5f2c659d35dd86c4c20c67f1ceac 100644
|
|
--- a/src/main/java/net/minecraft/network/EnumProtocol.java
|
|
+++ b/src/main/java/net/minecraft/network/EnumProtocol.java
|
|
@@ -286,6 +286,7 @@ public enum EnumProtocol {
|
|
|
|
@Nullable
|
|
public Packet<?> a(int i) {
|
|
+ if (i < 0 || i >= this.b.size()) return null; // Paper
|
|
Supplier<? extends Packet<T>> supplier = (Supplier) this.b.get(i);
|
|
|
|
return supplier != null ? (Packet) supplier.get() : null;
|
|
diff --git a/src/main/java/net/minecraft/network/PacketSplitter.java b/src/main/java/net/minecraft/network/PacketSplitter.java
|
|
index 2c7de7ab6da2106394ec668cd7cb9be1f8dabeb3..e81bfd35b9a745eeb1457ceda5fda320654bd89a 100644
|
|
--- a/src/main/java/net/minecraft/network/PacketSplitter.java
|
|
+++ b/src/main/java/net/minecraft/network/PacketSplitter.java
|
|
@@ -9,11 +9,21 @@ import java.util.List;
|
|
|
|
public class PacketSplitter extends ByteToMessageDecoder {
|
|
|
|
+ private final byte[] lenBuf = new byte[3]; // Paper
|
|
public PacketSplitter() {}
|
|
|
|
protected void decode(ChannelHandlerContext channelhandlercontext, ByteBuf bytebuf, List<Object> list) throws Exception {
|
|
+ // Paper start - if channel is not active just discard the packet
|
|
+ if (!channelhandlercontext.channel().isActive()) {
|
|
+ bytebuf.skipBytes(bytebuf.readableBytes());
|
|
+ return;
|
|
+ }
|
|
+ // Paper end
|
|
bytebuf.markReaderIndex();
|
|
- byte[] abyte = new byte[3];
|
|
+ // Paper start - reuse temporary length buffer
|
|
+ byte[] abyte = lenBuf;
|
|
+ java.util.Arrays.fill(abyte, (byte) 0);
|
|
+ // Paper end
|
|
|
|
for (int i = 0; i < abyte.length; ++i) {
|
|
if (!bytebuf.isReadable()) {
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/Packet.java b/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
index b644c91cecd8a347319dfe8c8923fd05919a9795..4c583593de4dc8ab27b3e1187f4dfe1740ef07a7 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
@@ -2,8 +2,10 @@ package net.minecraft.network.protocol;
|
|
|
|
import io.netty.channel.ChannelFuture; // Paper
|
|
import java.io.IOException;
|
|
+import net.minecraft.network.NetworkManager;
|
|
import net.minecraft.network.PacketDataSerializer;
|
|
import net.minecraft.network.PacketListener;
|
|
+import net.minecraft.server.level.EntityPlayer;
|
|
|
|
public interface Packet<T extends PacketListener> {
|
|
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/PlayerConnectionUtils.java b/src/main/java/net/minecraft/network/protocol/PlayerConnectionUtils.java
|
|
index e47da20ab8ce4da34755e105bf55d8542fb50138..67d8fe8ad036a9252c774bb6a914c8ec79981876 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/PlayerConnectionUtils.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/PlayerConnectionUtils.java
|
|
@@ -1,6 +1,9 @@
|
|
package net.minecraft.network.protocol;
|
|
|
|
+import net.minecraft.network.NetworkManager;
|
|
import net.minecraft.network.PacketListener;
|
|
+import net.minecraft.network.chat.ChatComponentText;
|
|
+import net.minecraft.network.protocol.game.PacketPlayOutKickDisconnect;
|
|
import net.minecraft.server.CancelledPacketHandleException;
|
|
import net.minecraft.server.level.WorldServer;
|
|
import net.minecraft.util.thread.IAsyncTaskHandler;
|
|
@@ -31,6 +34,21 @@ public class PlayerConnectionUtils {
|
|
try (Timing ignored = timing.startTiming()) { // Paper - timings
|
|
packet.a(t0);
|
|
} // Paper - timings
|
|
+ // Paper start
|
|
+ catch (Exception e) {
|
|
+ NetworkManager networkmanager = t0.a();
|
|
+ if (networkmanager.getPlayer() != null) {
|
|
+ LOGGER.error("Error whilst processing packet {} for {}[{}]", packet, networkmanager.getPlayer().getName(), networkmanager.getSocketAddress(), e);
|
|
+ } else {
|
|
+ LOGGER.error("Error whilst processing packet {} for connection from {}", packet, networkmanager.getSocketAddress(), e);
|
|
+ }
|
|
+ ChatComponentText error = new ChatComponentText("Packet processing error");
|
|
+ networkmanager.sendPacket(new PacketPlayOutKickDisconnect(error), (future) -> {
|
|
+ networkmanager.close(error);
|
|
+ });
|
|
+ networkmanager.stopReading();
|
|
+ }
|
|
+ // Paper end
|
|
} else {
|
|
PlayerConnectionUtils.LOGGER.debug("Ignoring packet due to disconnection: " + packet);
|
|
}
|