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https://github.com/PaperMC/Paper.git
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51 lines
2.4 KiB
Diff
51 lines
2.4 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 e0422471776f34b8e3c753d855aa06f00cc049ec..2e9c3b45052ad641bee091ee28cc57b93cd19ffe 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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@@ -452,4 +452,9 @@ 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/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
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index 4ddd3a819648fe5418a19d4496a18dc20c4e086e..7a84ea4116be070ab878e55b0cd919f3f3688f30 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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@@ -363,10 +363,22 @@ public class NetworkManager 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 a() {
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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 LoginListener) {
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+ if ( ((LoginListener) this.packetListener).getLoginState() != LoginListener.EnumProtocolState.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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((LoginListener) this.packetListener).tick();
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+ } // Paper
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}
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if (this.packetListener instanceof PlayerConnection) {
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