mirror of
https://github.com/PaperMC/Paper.git
synced 2024-08-24 21:53:21 +02:00
The patch does not implement Vanilla forceUpgrade behavior. Specifically, poi/entity conversion and regionfile recreation. The Vanilla force upgrader is also no longer broken by CB, so the bug fixes from this patch are not relevant anymore.
136 lines
6.7 KiB
Diff
136 lines
6.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Tue, 27 Nov 2018 21:18:06 -0500
|
|
Subject: [PATCH] Handle Large Packets disconnecting client
|
|
|
|
If a players inventory is too big to send in a single packet,
|
|
split the inventory set into multiple packets instead.
|
|
|
|
diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
|
|
index 7fb162fa031fd76aa9a94f5fdaa3e32ceb9b9abc..58d28b6c1cc7da7d786f78308db971f7502ad844 100644
|
|
--- a/src/main/java/net/minecraft/network/Connection.java
|
|
+++ b/src/main/java/net/minecraft/network/Connection.java
|
|
@@ -180,6 +180,21 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
|
|
}
|
|
|
|
public void exceptionCaught(ChannelHandlerContext channelhandlercontext, Throwable throwable) {
|
|
+ // Paper start - Handle large packets disconnecting client
|
|
+ if (throwable instanceof io.netty.handler.codec.EncoderException && throwable.getCause() instanceof PacketEncoder.PacketTooLargeException packetTooLargeException) {
|
|
+ final Packet<?> packet = packetTooLargeException.getPacket();
|
|
+ if (packet.packetTooLarge(this)) {
|
|
+ ProtocolSwapHandler.handleOutboundTerminalPacket(channelhandlercontext, packet);
|
|
+ return;
|
|
+ } else if (packet.isSkippable()) {
|
|
+ Connection.LOGGER.debug("Skipping packet due to errors", throwable.getCause());
|
|
+ ProtocolSwapHandler.handleOutboundTerminalPacket(channelhandlercontext, packet);
|
|
+ return;
|
|
+ } else {
|
|
+ throwable = throwable.getCause();
|
|
+ }
|
|
+ }
|
|
+ // Paper end - Handle large packets disconnecting client
|
|
if (throwable instanceof SkipPacketException) {
|
|
Connection.LOGGER.debug("Skipping packet due to errors", throwable.getCause());
|
|
} else {
|
|
diff --git a/src/main/java/net/minecraft/network/PacketEncoder.java b/src/main/java/net/minecraft/network/PacketEncoder.java
|
|
index 046bfc212b640de174b300e7a05cc30bb3cac93e..af3ec112e142a2c91c46882dad6180b18f39eec2 100644
|
|
--- a/src/main/java/net/minecraft/network/PacketEncoder.java
|
|
+++ b/src/main/java/net/minecraft/network/PacketEncoder.java
|
|
@@ -40,7 +40,33 @@ public class PacketEncoder<T extends PacketListener> extends MessageToByteEncode
|
|
|
|
throw var9;
|
|
} finally {
|
|
+ // Paper start - Handle large packets disconnecting client
|
|
+ int packetLength = byteBuf.readableBytes();
|
|
+ if (packetLength > MAX_PACKET_SIZE || (packetLength > MAX_FINAL_PACKET_SIZE && packet.hasLargePacketFallback())) {
|
|
+ throw new PacketTooLargeException(packet, packetLength);
|
|
+ }
|
|
+ // Paper end - Handle large packets disconnecting client
|
|
ProtocolSwapHandler.handleOutboundTerminalPacket(channelHandlerContext, packet);
|
|
}
|
|
}
|
|
+
|
|
+ // Paper start
|
|
+ // packet size is encoded into 3-byte varint
|
|
+ private static final int MAX_FINAL_PACKET_SIZE = (1 << 21) - 1;
|
|
+ // Vanilla Max size for the encoder (before compression)
|
|
+ private static final int MAX_PACKET_SIZE = 8388608;
|
|
+
|
|
+ public static class PacketTooLargeException extends RuntimeException {
|
|
+ private final Packet<?> packet;
|
|
+
|
|
+ PacketTooLargeException(Packet<?> packet, int packetLength) {
|
|
+ super("PacketTooLarge - " + packet.getClass().getSimpleName() + " is " + packetLength + ". Max is " + MAX_PACKET_SIZE);
|
|
+ this.packet = packet;
|
|
+ }
|
|
+
|
|
+ public Packet<?> getPacket() {
|
|
+ return this.packet;
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/Packet.java b/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
index 5ee2ba1225fb7e4f02152b45adeb66f79ed1650d..c9d283b7fc9ede79dc6cbc39dfc9e7ae986a6a47 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/Packet.java
|
|
@@ -11,6 +11,19 @@ public interface Packet<T extends PacketListener> {
|
|
|
|
void handle(T listener);
|
|
|
|
+ // Paper start
|
|
+ default boolean hasLargePacketFallback() {
|
|
+ return false;
|
|
+ }
|
|
+
|
|
+ /**
|
|
+ * override {@link #hasLargePacketFallback()} to return true when overriding in subclasses
|
|
+ */
|
|
+ default boolean packetTooLarge(net.minecraft.network.Connection manager) {
|
|
+ return false;
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
default boolean isSkippable() {
|
|
return false;
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
|
|
index 7e555ece0555b3d2a983ab2c39c5e7ec23fc7e88..8cca2ac616a2c80268c96b9f95e33f834a0fc8fd 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundContainerSetContentPacket.java
|
|
@@ -36,6 +36,21 @@ public class ClientboundContainerSetContentPacket implements Packet<ClientGamePa
|
|
this.carriedItem = ItemStack.OPTIONAL_STREAM_CODEC.decode(buf);
|
|
}
|
|
|
|
+ // Paper start - Handle large packets disconnecting client
|
|
+ @Override
|
|
+ public boolean hasLargePacketFallback() {
|
|
+ return true;
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ public boolean packetTooLarge(net.minecraft.network.Connection manager) {
|
|
+ for (int i = 0 ; i < this.items.size() ; i++) {
|
|
+ manager.send(new ClientboundContainerSetSlotPacket(this.containerId, this.stateId, i, this.items.get(i)));
|
|
+ }
|
|
+ return true;
|
|
+ }
|
|
+ // Paper end - Handle large packets disconnecting client
|
|
+
|
|
private void write(RegistryFriendlyByteBuf buf) {
|
|
buf.writeByte(this.containerId);
|
|
buf.writeVarInt(this.stateId);
|
|
diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
|
|
index 2501fbaf497d226051800c53d60a39bbc80db91c..0a8d07bf68b0ceabd13c70196d357fce79dcc2c3 100644
|
|
--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
|
|
+++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundLevelChunkPacketData.java
|
|
@@ -80,7 +80,7 @@ public class ClientboundLevelChunkPacketData {
|
|
throw new RuntimeException("Can't read heightmap in packet for [" + x + ", " + z + "]");
|
|
} else {
|
|
int i = buf.readVarInt();
|
|
- if (i > 2097152) {
|
|
+ if (i > 2097152) { // Paper - diff on change - if this changes, update PacketEncoder
|
|
throw new RuntimeException("Chunk Packet trying to allocate too much memory on read.");
|
|
} else {
|
|
this.buffer = new byte[i];
|