Paper/Spigot-Server-Patches/0350-Handle-Excessive-Signs-in-Chunks-creating-too-large-.patch
2019-12-13 20:41:01 +00:00

91 lines
3.8 KiB
Diff

From 1f16dbca7a54ed7372011bb8a9c9349bc6539d7a Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 2 Mar 2019 14:55:01 -0500
Subject: [PATCH] Handle Excessive Signs in Chunks creating too large of
packets
Also adds a limit to stop sending Sign data to client after 500
signs per chunk to limit client lag.
Use -DPaper.excessiveSignsLimit=500 to configure that limit, or -1
to disable the limit and let your players be abused.
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index b1dededc1..e156804f7 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -212,6 +212,15 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
});
}
+ // Paper start
+ java.util.List<Packet> extraPackets = packet.getExtraPackets();
+ if (extraPackets != null && !extraPackets.isEmpty()) {
+ for (Packet extraPacket : extraPackets) {
+ this.dispatchPacket(extraPacket, genericfuturelistener);
+ }
+ }
+ // Paper end
+
}
private void sendPacketQueue() { this.o(); } // Paper - OBFHELPER
diff --git a/src/main/java/net/minecraft/server/Packet.java b/src/main/java/net/minecraft/server/Packet.java
index 2d8e6a2f4..8d0965a05 100644
--- a/src/main/java/net/minecraft/server/Packet.java
+++ b/src/main/java/net/minecraft/server/Packet.java
@@ -11,6 +11,7 @@ public interface Packet<T extends PacketListener> {
void a(T t0);
// Paper start
+ default java.util.List<Packet> getExtraPackets() { return null; }
default boolean packetTooLarge(NetworkManager manager) {
return false;
}
diff --git a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
index a0b87f89d..47710067a 100644
--- a/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
+++ b/src/main/java/net/minecraft/server/PacketPlayOutMapChunk.java
@@ -23,6 +23,15 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
public PacketPlayOutMapChunk() {}
+ // Paper start
+ private final java.util.List<Packet> extraPackets = new java.util.ArrayList<>();
+ private static final int SKIP_EXCESSIVE_SIGNS_LIMIT = Integer.getInteger("Paper.excessiveSignsLimit", 500);
+
+ @Override
+ public java.util.List<Packet> getExtraPackets() {
+ return extraPackets;
+ }
+ // Paper end
public PacketPlayOutMapChunk(Chunk chunk, int i) {
ChunkCoordIntPair chunkcoordintpair = chunk.getPos();
@@ -49,6 +58,7 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
this.c = this.a(new PacketDataSerializer(this.j()), chunk, i);
this.g = Lists.newArrayList();
iterator = chunk.getTileEntities().entrySet().iterator();
+ int totalSigns = 0; // Paper
while (iterator.hasNext()) {
entry = (Entry) iterator.next();
@@ -57,6 +67,14 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
int j = blockposition.getY() >> 4;
if (this.f() || (i & 1 << j) != 0) {
+ // Paper start - send signs separately
+ if (tileentity instanceof TileEntitySign) {
+ if (SKIP_EXCESSIVE_SIGNS_LIMIT < 0 || ++totalSigns < SKIP_EXCESSIVE_SIGNS_LIMIT) {
+ this.extraPackets.add(tileentity.getUpdatePacket());
+ }
+ continue;
+ }
+ // Paper end
NBTTagCompound nbttagcompound = tileentity.b();
if (tileentity instanceof TileEntitySkull) { TileEntitySkull.sanitizeTileEntityUUID(nbttagcompound); } // Paper
--
2.24.1