Paper/Spigot-Server-Patches/0560-Buffer-joins-to-world.patch
Gabscap 7ae47d4eb3
[CI-SKIP] Remove Waving banner fix (#4786)
Mojang fixed it in MC-63720
2020-11-19 10:15:16 -05:00

51 lines
2.4 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Wed, 19 Aug 2020 05:05:54 +0100
Subject: [PATCH] Buffer joins to world
This patch buffers the number of logins which will attempt to join
the world per tick, this attempts to reduce the impact that join floods
has on the server
diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
index e0422471776f34b8e3c753d855aa06f00cc049ec..2e9c3b45052ad641bee091ee28cc57b93cd19ffe 100644
--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
@@ -452,4 +452,9 @@ public class PaperConfig {
maxPlayerAutoSavePerTick = (playerAutoSaveRate == -1 || playerAutoSaveRate > 100) ? 10 : 20;
}
}
+
+ public static int maxJoinsPerTick;
+ private static void maxJoinsPerTick() {
+ maxJoinsPerTick = getInt("settings.max-joins-per-tick", 3);
+ }
}
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 4ddd3a819648fe5418a19d4496a18dc20c4e086e..7a84ea4116be070ab878e55b0cd919f3f3688f30 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -363,10 +363,22 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
}
// Paper end
+ private static final int MAX_PER_TICK = com.destroystokyo.paper.PaperConfig.maxJoinsPerTick; // Paper
+ private static int joinAttemptsThisTick; // Paper
+ private static int currTick; // Paper
public void a() {
this.p();
+ // Paper start
+ if (currTick != MinecraftServer.currentTick) {
+ currTick = MinecraftServer.currentTick;
+ joinAttemptsThisTick = 0;
+ }
+ // Paper end
if (this.packetListener instanceof LoginListener) {
+ if ( ((LoginListener) this.packetListener).getLoginState() != LoginListener.EnumProtocolState.READY_TO_ACCEPT // Paper
+ || (joinAttemptsThisTick++ < MAX_PER_TICK)) { // Paper - limit the number of joins which can be processed each tick
((LoginListener) this.packetListener).tick();
+ } // Paper
}
if (this.packetListener instanceof PlayerConnection) {