From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 2 Aug 2020 18:27:13 +0100
Subject: [PATCH] PaperMC - Buffer joins


diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 66f239040..fe9a770cb 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -412,10 +412,23 @@ public class NetworkManager extends SimpleChannelInboundHandler<Packet<?>> {
     }
     // Paper end
 
+    private static final int MAX_PER_TICK = 3; // max joins per tick
+    private static int lastHit = 0; // unused for now
+    public static int thisTick; // current tick counter
+    private static int loginsThisTick = 0;
+    private static int currTick;
     public void a() {
+        if (currTick != thisTick) {
+            currTick = thisTick;
+            loginsThisTick = 0;
+        }
         this.p();
         if (this.packetListener instanceof LoginListener) {
-            ((LoginListener) this.packetListener).tick();
+            if ( ((LoginListener) this.packetListener).getLoginState() != LoginListener.EnumProtocolState.READY_TO_ACCEPT
+                 || (thisTick > lastHit + 10 || loginsThisTick++ < MAX_PER_TICK)
+            ) {
+                ((LoginListener) this.packetListener).tick();
+            }
         }
 
         if (this.packetListener instanceof PlayerConnection) {
diff --git a/src/main/java/net/minecraft/server/ServerConnection.java b/src/main/java/net/minecraft/server/ServerConnection.java
index 5f4dacf9c..9b2f93a4b 100644
--- a/src/main/java/net/minecraft/server/ServerConnection.java
+++ b/src/main/java/net/minecraft/server/ServerConnection.java
@@ -124,7 +124,7 @@ public class ServerConnection {
 
     public void c() {
         List list = this.connectedChannels;
-
+        NetworkManager.thisTick++; //Paper
         synchronized (this.connectedChannels) {
             // Spigot Start
             this.addPending(); // Paper