From 4f05887f3293945dfa89d730dfa8ac166a7f415f Mon Sep 17 00:00:00 2001
From: TheMode <themode@outlook.fr>
Date: Thu, 15 Apr 2021 21:03:21 +0200
Subject: [PATCH 1/2] Send time packet on login

---
 src/main/java/net/minestom/server/instance/Instance.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/java/net/minestom/server/instance/Instance.java b/src/main/java/net/minestom/server/instance/Instance.java
index 923e94efd..befe5b053 100644
--- a/src/main/java/net/minestom/server/instance/Instance.java
+++ b/src/main/java/net/minestom/server/instance/Instance.java
@@ -869,6 +869,7 @@ public abstract class Instance implements BlockModifier, Tickable, EventHandler,
             if (isPlayer) {
                 final Player player = (Player) entity;
                 getWorldBorder().init(player);
+                player.getPlayerConnection().sendPacket(createTimePacket());
             }
 
             // Send all visible entities

From 502ec22b92005c7c3cf1a81d37d093dfae8b5be8 Mon Sep 17 00:00:00 2001
From: TheMode <themode@outlook.fr>
Date: Fri, 16 Apr 2021 01:52:46 +0200
Subject: [PATCH 2/2] Reduce synchronization overhead when writing tick buffer

---
 .../network/player/NettyPlayerConnection.java | 30 ++++++++++---------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java b/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
index 5d7167d70..ed0fec697 100644
--- a/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
+++ b/src/main/java/net/minestom/server/network/player/NettyPlayerConnection.java
@@ -183,23 +183,25 @@ public class NettyPlayerConnection extends PlayerConnection {
             return;
         }
 
+        // Retrieve safe copy
+        final ByteBuf copy;
         synchronized (tickBuffer) {
-            final ByteBuf copy = tickBuffer.copy();
-
-            ChannelFuture channelFuture = channel.write(new FramedPacket(copy));
-            channelFuture.addListener(future -> copy.release());
-
-            // Netty debug
-            if (MinecraftServer.shouldProcessNettyErrors()) {
-                channelFuture.addListener(future -> {
-                    if (!future.isSuccess() && channel.isActive()) {
-                        MinecraftServer.getExceptionManager().handleException(future.cause());
-                    }
-                });
-            }
-
+            copy = tickBuffer.copy();
             tickBuffer.clear();
         }
+
+        // Write copied buffer to netty
+        ChannelFuture channelFuture = channel.write(new FramedPacket(copy));
+        channelFuture.addListener(future -> copy.release());
+
+        // Netty debug
+        if (MinecraftServer.shouldProcessNettyErrors()) {
+            channelFuture.addListener(future -> {
+                if (!future.isSuccess() && channel.isActive()) {
+                    MinecraftServer.getExceptionManager().handleException(future.cause());
+                }
+            });
+        }
     }
 
     public void flush() {