rewrite chunk system checkpoint

patches/server/0157-Expose-client-protocol-version-and-virtual-host.patch

@@ -1,116 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Minecrell <minecrell@minecrell.net>
-Date: Tue, 10 Oct 2017 18:45:20 +0200
-Subject: [PATCH] Expose client protocol version and virtual host
-
-
-diff --git a/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java
-new file mode 100644
-index 0000000000000000000000000000000000000000..a5a7624f1f372a26b982836cd31cff15e2589e9b
---- /dev/null
-+++ b/src/main/java/com/destroystokyo/paper/network/PaperNetworkClient.java
-@@ -0,0 +1,49 @@
-+package com.destroystokyo.paper.network;
-+
-+import java.net.InetSocketAddress;
-+
-+import javax.annotation.Nullable;
-+import net.minecraft.network.Connection;
-+
-+public class PaperNetworkClient implements NetworkClient {
-+
-+    private final Connection networkManager;
-+
-+    PaperNetworkClient(Connection networkManager) {
-+        this.networkManager = networkManager;
-+    }
-+
-+    @Override
-+    public InetSocketAddress getAddress() {
-+        return (InetSocketAddress) this.networkManager.getRemoteAddress();
-+    }
-+
-+    @Override
-+    public int getProtocolVersion() {
-+        return this.networkManager.protocolVersion;
-+    }
-+
-+    @Nullable
-+    @Override
-+    public InetSocketAddress getVirtualHost() {
-+        return this.networkManager.virtualHost;
-+    }
-+
-+    public static InetSocketAddress prepareVirtualHost(String host, int port) {
-+        int len = host.length();
-+
-+        // FML appends a marker to the host to recognize FML clients (\0FML\0)
-+        int pos = host.indexOf('\0');
-+        if (pos >= 0) {
-+            len = pos;
-+        }
-+
-+        // When clients connect with a SRV record, their host contains a trailing '.'
-+        if (len > 0 && host.charAt(len -  1) == '.') {
-+            len--;
-+        }
-+
-+        return InetSocketAddress.createUnresolved(host.substring(0, len), port);
-+    }
-+
-+}
-diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
-index 3ab557277cff7c8a43b0f3de45d17f2bf78f7747..ff1069f57227783f440e4ec9deb58fc709dfd0e7 100644
---- a/src/main/java/net/minecraft/network/Connection.java
-+++ b/src/main/java/net/minecraft/network/Connection.java
-@@ -92,6 +92,10 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
-     private int tickCount;
-     private boolean handlingFault;
-     public String hostname = ""; // CraftBukkit - add field
-+    // Paper start - NetworkClient implementation
-+    public int protocolVersion;
-+    public java.net.InetSocketAddress virtualHost;
-+    // Paper end
- 
-     public Connection(PacketFlow side) {
-         this.receiving = side;
-diff --git a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
-index 77d7f070cce1a47e41b5d4f5a1cc8c778352a126..a3b610cb1ed97a635677bc46ccdf0463c9918585 100644
---- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
-+++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
-@@ -157,6 +157,10 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
-                 throw new UnsupportedOperationException("Invalid intention " + packet.getIntention());
-         }
- 
-+        // Paper start - NetworkClient implementation
-+        this.connection.protocolVersion = packet.getProtocolVersion();
-+        this.connection.virtualHost = com.destroystokyo.paper.network.PaperNetworkClient.prepareVirtualHost(packet.hostName, packet.port);
-+        // Paper end
-     }
- 
-     @Override
-diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-index 1cccc331222b24ac99ad7f6897a81ecd383ce7d3..5af1f24c42e61ce159a3f6221411d01bdc4178c0 100644
---- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
-@@ -233,6 +233,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
-         }
-     }
- 
-+    // Paper start - Implement NetworkClient
-+    @Override
-+    public int getProtocolVersion() {
-+        if (getHandle().connection == null) return -1;
-+        return getHandle().connection.connection.protocolVersion;
-+    }
-+
-+    @Override
-+    public InetSocketAddress getVirtualHost() {
-+        if (getHandle().connection == null) return null;
-+        return getHandle().connection.connection.virtualHost;
-+    }
-+    // Paper end
-+
-     @Override
-     public double getEyeHeight(boolean ignorePose) {
-         if (ignorePose) {