Developers!: You will need to clean up your work/Minecraft/1.13.2 folder for this Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: b850a822 SPIGOT-4526: Add conversion time API for Zombie & subclasses CraftBukkit Changes: 38cf676e SPIGOT-4534: CreatureSpawnEvent not being called for CHUNK_GEN b446cb5d SPIGOT-4527: Fix sponges with waterlogged blocks 6ec8ea5c SPIGOT-4526: Add conversion time API for Zombie & subclasses c64fe508 Mappings Update a3c2ec03 Fix missing ServerListPingEvent call for legacy pings Spigot Changes: 1dc156ce Rebuild patches 140f654d Mappings Update
119 lines
4.8 KiB
Diff
119 lines
4.8 KiB
Diff
From c5f21c24ee494a5b7a3e161a1f4af4cf6930564d Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Tue, 27 Nov 2018 21:18:06 -0500
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Subject: [PATCH] Handle Large Packets disconnecting client
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If a players inventory is too big to send in a single packet,
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split the inventory set into multiple packets instead.
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diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
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index 120416b30..065bede4c 100644
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--- a/src/main/java/net/minecraft/server/NetworkManager.java
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+++ b/src/main/java/net/minecraft/server/NetworkManager.java
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@@ -100,6 +100,15 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
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}
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public void exceptionCaught(ChannelHandlerContext channelhandlercontext, Throwable throwable) {
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+ // Paper start
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+ if (throwable instanceof io.netty.handler.codec.EncoderException && throwable.getCause() instanceof PacketEncoder.PacketTooLargeException) {
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+ if (((PacketEncoder.PacketTooLargeException) throwable.getCause()).getPacket().packetTooLarge(this)) {
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+ return;
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+ } else {
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+ throwable = throwable.getCause();
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+ }
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+ }
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+ // Paper end
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if (throwable instanceof SkipEncodeException) {
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NetworkManager.g.debug("Skipping packet due to errors", throwable.getCause());
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} else {
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diff --git a/src/main/java/net/minecraft/server/Packet.java b/src/main/java/net/minecraft/server/Packet.java
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index 2e42c268b..0a9bfb07a 100644
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--- a/src/main/java/net/minecraft/server/Packet.java
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+++ b/src/main/java/net/minecraft/server/Packet.java
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@@ -9,6 +9,12 @@ public interface Packet<T extends PacketListener> {
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void a(T var1);
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+ // Paper start
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+ default boolean packetTooLarge(NetworkManager manager) {
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+ return false;
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+ }
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+ // Paper end
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+
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default boolean a() {
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return false;
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}
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diff --git a/src/main/java/net/minecraft/server/PacketEncoder.java b/src/main/java/net/minecraft/server/PacketEncoder.java
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index 3448f6c53..484131e65 100644
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--- a/src/main/java/net/minecraft/server/PacketEncoder.java
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+++ b/src/main/java/net/minecraft/server/PacketEncoder.java
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@@ -45,8 +45,31 @@ public class PacketEncoder extends MessageToByteEncoder<Packet<?>> {
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throw throwable;
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}
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}
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+
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+ // Paper start
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+ int packetLength = bytebuf.readableBytes();
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+ if (packetLength > MAX_PACKET_SIZE) {
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+ throw new PacketTooLargeException(packet, packetLength);
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+ }
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+ // Paper end
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}
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}
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}
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+ // Paper start
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+ private static int MAX_PACKET_SIZE = 2097152;
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+
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+ public static class PacketTooLargeException extends RuntimeException {
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+ private final Packet<?> packet;
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+
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+ PacketTooLargeException(Packet<?> packet, int packetLength) {
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+ super("PacketTooLarge - " + packet.getClass().getSimpleName() + " is " + packetLength + ". Max is " + MAX_PACKET_SIZE);
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+ this.packet = packet;
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+ }
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+
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+ public Packet<?> getPacket() {
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+ return packet;
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+ }
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+ }
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+ // Paper end
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}
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diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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index 40ec398ee..ca6bcd22f 100644
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--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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+++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
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@@ -68,7 +68,7 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
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this.f = packetdataserializer.readBoolean();
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this.c = packetdataserializer.g();
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int i = packetdataserializer.g();
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- if (i > 2097152) {
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+ if (i > 2097152) { // Paper - if this changes, update PacketEncoder
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throw new RuntimeException("Chunk Packet trying to allocate too much memory on read.");
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} else {
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this.d = new byte[i];
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diff --git a/src/main/java/net/minecraft/server/PacketPlayOutWindowItems.java b/src/main/java/net/minecraft/server/PacketPlayOutWindowItems.java
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index 4d4835353..abdb21f6b 100644
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--- a/src/main/java/net/minecraft/server/PacketPlayOutWindowItems.java
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+++ b/src/main/java/net/minecraft/server/PacketPlayOutWindowItems.java
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@@ -7,6 +7,16 @@ public class PacketPlayOutWindowItems implements Packet<PacketListenerPlayOut> {
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private int a;
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private List<ItemStack> b;
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+ //Paper start
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+ @Override
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+ public boolean packetTooLarge(NetworkManager manager) {
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+ for (int i = 0 ; i < this.b.size() ; i++) {
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+ manager.sendPacket(new PacketPlayOutSetSlot(this.a, i, this.b.get(i)));
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+ }
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+ return true;
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+ }
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+ // Paper end
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+
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public PacketPlayOutWindowItems() {
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}
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--
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2.20.0
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