mirror of
https://github.com/PaperMC/Paper.git
synced 2024-08-25 06:03:03 +02:00
* Expose server build information * squash patches * final tweaks --------- Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com> Co-authored-by: masmc05 <masmc05@gmail.com>
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];
|