Set Netty pooled buffer size to 4MB

BungeeCord-Patches/0063-Set-Netty-pooled-buffer-size-to-4MB.patch

@@ -0,0 +1,33 @@
+From 1893ffe3f7accc11a96ad603eaa42333df904fbd Mon Sep 17 00:00:00 2001
+From: Andrew Steinborn <git@steinborn.me>
+Date: Sat, 24 Apr 2021 17:52:33 +0100
+Subject: [PATCH] Set Netty pooled buffer size to 4MB
+
+
+diff --git a/proxy/src/main/java/net/md_5/bungee/BungeeCordLauncher.java b/proxy/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
+index e830198d..771b3725 100644
+--- a/proxy/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
++++ b/proxy/src/main/java/net/md_5/bungee/BungeeCordLauncher.java
+@@ -21,6 +21,19 @@ public class BungeeCordLauncher
+         Security.setProperty( "networkaddress.cache.ttl", "30" );
+         Security.setProperty( "networkaddress.cache.negative.ttl", "10" );
+ 
++        // Waterfall start
++        // By default, Netty allocates 16MiB arenas for the PooledByteBufAllocator. This is too much
++        // memory for Minecraft, which imposes a maximum packet size of 2MiB! We'll use 4MiB as a more
++        // sane default.
++        //
++        // Note: io.netty.allocator.pageSize << io.netty.allocator.maxOrder is the formula used to
++        // compute the chunk size. We lower maxOrder from its default of 11 to 9. (We also use a null
++        // check, so that the user is free to choose another setting if need be.)
++        if (System.getProperty("io.netty.allocator.maxOrder") == null) {
++            System.setProperty("io.netty.allocator.maxOrder", "9");
++        }
++        // Waterfall end
++
+         OptionParser parser = new OptionParser();
+         parser.allowsUnrecognizedOptions();
+         parser.acceptsAll( Arrays.asList( "help" ), "Show the help" );
+-- 
+2.31.1
+