rewrite chunk system checkpoint

patches/server/0156-handle-ServerboundKeepAlivePacket-async.patch

@@ -1,40 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Shane Freeder <theboyetronic@gmail.com>
-Date: Thu, 5 Oct 2017 01:54:07 +0100
-Subject: [PATCH] handle ServerboundKeepAlivePacket async
-
-In 1.12.2, Mojang moved the processing of ServerboundKeepAlivePacket off the main
-thread, while entirely correct for the server, this causes issues with
-plugins which are expecting the PlayerQuitEvent on the main thread.
-
-In order to counteract some bad behavior, we will post handling of the
-disconnection to the main thread, but leave the actual processing of the packet
-off the main thread.
-
-also adding some additional logging in order to help work out what is causing
-random disconnections for clients.
-
-diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-index 177c26ac1853d3a0834bb2eb5e7a0b656775a663..8ff49b7ea0671c4126ea24d03267b53cfa66b84c 100644
---- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
-@@ -3101,14 +3101,18 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
- 
-     @Override
-     public void handleKeepAlive(ServerboundKeepAlivePacket packet) {
--        PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // CraftBukkit
-+        //PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // CraftBukkit // Paper - This shouldn't be on the main thread
-         if (this.keepAlivePending && packet.getId() == this.keepAliveChallenge) {
-             int i = (int) (Util.getMillis() - this.keepAliveTime);
- 
-             this.player.latency = (this.player.latency * 3 + i) / 4;
-             this.keepAlivePending = false;
-         } else if (!this.isSingleplayerOwner()) {
-+            // Paper start - This needs to be handled on the main thread for plugins
-+            server.submit(() -> {
-             this.disconnect(Component.translatable("disconnect.timeout"));
-+            });
-+            // Paper end
-         }
- 
-     }