mirror of https://github.com/PaperMC/Paper.git
72 lines
3.7 KiB
Diff
72 lines
3.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Wed, 19 Aug 2020 05:05:54 +0100
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Subject: [PATCH] Buffer joins to world
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This patch buffers the number of logins which will attempt to join
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the world per tick, this attempts to reduce the impact that join floods
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has on the server
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diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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index faa1b775e45563b93ac1d5b904938b1f5ad8d80c..545948f20efd6c8dd42140b565af94cd6b52b661 100644
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--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
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+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
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@@ -457,4 +457,9 @@ public class PaperConfig {
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maxPlayerAutoSavePerTick = (playerAutoSaveRate == -1 || playerAutoSaveRate > 100) ? 10 : 20;
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}
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}
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+
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+ public static int maxJoinsPerTick;
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+ private static void maxJoinsPerTick() {
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+ maxJoinsPerTick = getInt("settings.max-joins-per-tick", 3);
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+ }
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}
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diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
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index fc63df21aecd4721efdb45d4744666ed0b562c1b..6f7cbce5a049d87d4a0ed7cc4517cb4e8694efb5 100644
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--- a/src/main/java/net/minecraft/network/Connection.java
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+++ b/src/main/java/net/minecraft/network/Connection.java
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@@ -32,6 +32,7 @@ import net.minecraft.network.protocol.game.ClientboundDisconnectPacket;
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import net.minecraft.network.protocol.game.ClientboundKeepAlivePacket;
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import net.minecraft.network.protocol.game.ClientboundSetTitlesPacket;
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import net.minecraft.server.MCUtil;
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+import net.minecraft.server.MinecraftServer;
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import net.minecraft.server.RunningOnDifferentThreadException;
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import net.minecraft.server.level.ServerPlayer;
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import net.minecraft.server.network.ServerGamePacketListenerImpl;
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@@ -382,10 +383,22 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
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}
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// Paper end
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+ private static final int MAX_PER_TICK = com.destroystokyo.paper.PaperConfig.maxJoinsPerTick; // Paper
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+ private static int joinAttemptsThisTick; // Paper
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+ private static int currTick; // Paper
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public void tick() {
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this.p();
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+ // Paper start
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+ if (currTick != MinecraftServer.currentTick) {
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+ currTick = MinecraftServer.currentTick;
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+ joinAttemptsThisTick = 0;
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+ }
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+ // Paper end
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if (this.packetListener instanceof ServerLoginPacketListenerImpl) {
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+ if ( ((ServerLoginPacketListenerImpl) this.packetListener).getLoginState() != ServerLoginPacketListenerImpl.State.READY_TO_ACCEPT // Paper
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+ || (joinAttemptsThisTick++ < MAX_PER_TICK)) { // Paper - limit the number of joins which can be processed each tick
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((ServerLoginPacketListenerImpl) this.packetListener).tick();
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+ } // Paper
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}
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if (this.packetListener instanceof ServerGamePacketListenerImpl) {
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diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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index e229c7735ba88be3d8721440104958408a2a075e..659bf14cf3c949b896d0333f893a3d5e16ab9c92 100644
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--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
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@@ -420,7 +420,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
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return new GameProfile(uuid, profile.getName());
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}
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- static enum State {
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+ public enum State { // Paper - package private -> public
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HELLO, KEY, AUTHENTICATING, NEGOTIATING, READY_TO_ACCEPT, DELAY_ACCEPT, ACCEPTED;
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