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38 lines
2.0 KiB
Diff
38 lines
2.0 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/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
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index 7e11d760f84d2cda85e686c5eca764e666e9389f..65c2263f8872fba4f68779e0e90ea5f96aefdfbd 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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@@ -396,8 +396,23 @@ 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 = io.papermc.paper.configuration.GlobalConfiguration.get().misc.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.flushQueue();
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+ // Paper start
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+ if (currTick != net.minecraft.server.MinecraftServer.currentTick) {
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+ currTick = net.minecraft.server.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 net.minecraft.server.network.ServerLoginPacketListenerImpl) {
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+ if ( ((net.minecraft.server.network.ServerLoginPacketListenerImpl) this.packetListener).state != net.minecraft.server.network.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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+ ((net.minecraft.server.network.ServerLoginPacketListenerImpl) this.packetListener).tick();
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+ } // Paper
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+ }
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PacketListener packetlistener = this.packetListener;
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if (packetlistener instanceof TickablePacketListener) {
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