91 lines
3.8 KiB
Diff
91 lines
3.8 KiB
Diff
From 0fb0803c2d7490a52dfbf7e8260e9a314fb41bbb Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Sat, 2 Mar 2019 14:55:01 -0500
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Subject: [PATCH] Handle Excessive Signs in Chunks creating too large of
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packets
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Also adds a limit to stop sending Sign data to client after 500
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signs per chunk to limit client lag.
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Use -DPaper.excessiveSignsLimit=500 to configure that limit, or -1
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to disable the limit and let your players be abused.
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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 1b0643c27f..4766f7b773 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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@@ -220,6 +220,15 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
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});
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}
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+ // Paper start
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+ java.util.List<Packet> extraPackets = packet.getExtraPackets();
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+ if (extraPackets != null && !extraPackets.isEmpty()) {
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+ for (Packet extraPacket : extraPackets) {
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+ this.dispatchPacket(extraPacket, genericfuturelistener);
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+ }
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+ }
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+ // Paper end
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+
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}
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private void sendPacketQueue() { this.o(); } // Paper - OBFHELPER
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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 2d8e6a2f4a..8d0965a053 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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@@ -11,6 +11,7 @@ public interface Packet<T extends PacketListener> {
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void a(T t0);
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// Paper start
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+ default java.util.List<Packet> getExtraPackets() { return null; }
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default boolean packetTooLarge(NetworkManager manager) {
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return false;
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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 58eccd9c63..ef71a1feb3 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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@@ -20,6 +20,15 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
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public PacketPlayOutMapChunk() {}
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+ // Paper start
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+ private final java.util.List<Packet> extraPackets = new java.util.ArrayList<>();
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+ private static final int SKIP_EXCESSIVE_SIGNS_LIMIT = Integer.getInteger("Paper.excessiveSignsLimit", 500);
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+
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+ @Override
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+ public java.util.List<Packet> getExtraPackets() {
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+ return extraPackets;
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+ }
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+ // Paper end
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public PacketPlayOutMapChunk(Chunk chunk, int i) {
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ChunkCoordIntPair chunkcoordintpair = chunk.getPos();
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@@ -42,6 +51,7 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
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this.c = this.a(new PacketDataSerializer(this.i()), chunk, i);
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this.f = Lists.newArrayList();
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iterator = chunk.getTileEntities().entrySet().iterator();
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+ int totalSigns = 0; // Paper
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while (iterator.hasNext()) {
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entry = (Entry) iterator.next();
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@@ -50,6 +60,14 @@ public class PacketPlayOutMapChunk implements Packet<PacketListenerPlayOut> {
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int j = blockposition.getY() >> 4;
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if (this.f() || (i & 1 << j) != 0) {
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+ // Paper start - send signs separately
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+ if (tileentity instanceof TileEntitySign) {
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+ if (SKIP_EXCESSIVE_SIGNS_LIMIT < 0 || ++totalSigns < SKIP_EXCESSIVE_SIGNS_LIMIT) {
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+ this.extraPackets.add(tileentity.getUpdatePacket());
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+ }
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+ continue;
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+ }
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+ // Paper end
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NBTTagCompound nbttagcompound = tileentity.b();
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if (tileentity instanceof TileEntitySkull) { TileEntitySkull.sanitizeTileEntityUUID(nbttagcompound); } // Paper
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--
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2.21.0
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