SPIGOT-709: Extend the block place limit to arm swings

CraftBukkit-Patches/0125-Limit-block-placement-interaction-packets.patch

@@ -1,11 +1,11 @@
-From 60bb367ecd43ae6099214c05bca623be2088ff5e Mon Sep 17 00:00:00 2001
+From bbc82ac5ec6cf152414fa0b8e7ccd080535cc993 Mon Sep 17 00:00:00 2001
 From: Thinkofdeath <thinkofdeath@spigotmc.org>
 Date: Sun, 29 Jun 2014 21:10:34 +0100
 Subject: [PATCH] Limit block placement/interaction packets
 
 
 diff --git a/src/main/java/net/minecraft/server/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
-index ee6fa34..b4b3cbc 100644
+index ee6fa34..d63c65d 100644
 --- a/src/main/java/net/minecraft/server/PlayerConnection.java
 +++ b/src/main/java/net/minecraft/server/PlayerConnection.java
 @@ -626,10 +626,23 @@ public class PlayerConnection implements PacketListenerPlayIn, IUpdatePlayerList
@@ -61,6 +61,26 @@ index ee6fa34..b4b3cbc 100644
              }
  
              flag = true;
+@@ -1130,6 +1146,19 @@ public class PlayerConnection implements PacketListenerPlayIn, IUpdatePlayerList
+     public void a(PacketPlayInArmAnimation packetplayinarmanimation) {
+         if (this.player.dead) return; // CraftBukkit
+         PlayerConnectionUtils.ensureMainThread(packetplayinarmanimation, this, this.player.u());
++        // Spigot start
++        boolean throttled = false;
++        if (lastPlace != -1 && packetplayinarmanimation.timestamp - lastPlace < 30 && packets++ >= 4) {
++            throttled = true;
++        } else if ( packetplayinarmanimation.timestamp - lastPlace >= 30 || lastPlace == -1 )
++        {
++            lastPlace = packetplayinarmanimation.timestamp;
++            packets = 0;
++        }
++        if (throttled) {
++            return;
++        }
++        // Spigot end
+         this.player.z();
+         // CraftBukkit start - Raytrace to look for 'rogue armswings'
+         float f1 = this.player.pitch;
 -- 
 2.1.0