72 Zeilen
3.5 KiB
Diff
72 Zeilen
3.5 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/NetworkManager.java b/src/main/java/net/minecraft/network/NetworkManager.java
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index ab70eeaeca222de7de7cab1b3db14b2c4761c3c3..878f879f8d410c428ad8a4c49e0c86c559bc47a9 100644
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--- a/src/main/java/net/minecraft/network/NetworkManager.java
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+++ b/src/main/java/net/minecraft/network/NetworkManager.java
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@@ -33,6 +33,7 @@ import net.minecraft.network.protocol.game.PacketPlayOutTabComplete;
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import net.minecraft.network.protocol.game.PacketPlayOutTitle;
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import net.minecraft.server.CancelledPacketHandleException;
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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.level.EntityPlayer;
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import net.minecraft.server.network.LoginListener;
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import net.minecraft.server.network.PlayerConnection;
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@@ -382,10 +383,22 @@ 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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diff --git a/src/main/java/net/minecraft/server/network/LoginListener.java b/src/main/java/net/minecraft/server/network/LoginListener.java
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index 06e2b48ed6d6d52d0eb17301254ed07fb69cb8af..e9fc38f69af815f021a08a94dd41b91171dbf2d6 100644
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--- a/src/main/java/net/minecraft/server/network/LoginListener.java
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+++ b/src/main/java/net/minecraft/server/network/LoginListener.java
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@@ -417,7 +417,7 @@ public class LoginListener implements PacketLoginInListener {
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return new GameProfile(uuid, gameprofile.getName());
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}
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- static enum EnumProtocolState {
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+ public enum EnumProtocolState { // Paper - package private -> public
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HELLO, KEY, AUTHENTICATING, NEGOTIATING, READY_TO_ACCEPT, DELAY_ACCEPT, ACCEPTED;
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