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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
53 lines
3.6 KiB
Diff
53 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 29 Jul 2018 05:02:15 +0100
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Subject: [PATCH] Break up and make tab spam limits configurable
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Due to the changes in 1.13, clients will send a tab completion request
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for all bukkit commands in order to factor in the lack of support for
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brigadier and provide backwards support in the API.
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Craftbukkit, however; has moved the chat spam limiter to also interact
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with the tab completion request, which while good for avoiding abuse,
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causes 1.13 clients to easilly be kicked from a server in bukkit due
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to this. Removing the spam limit could cause issues for servers, however,
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there is no way for servers to manipulate this without blindly cancelling
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kick events, which only causes additional complications. This also causes
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issues in that the tab spam limit and chat share the same field but different
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limits, meaning that a player having typed a long command may be kicked from
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the server.
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Splitting the field up and making it configurable allows for server owners
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to take the burden of this into their own hand without having to rely on
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plugins doing unsafe things.
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diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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index a517eb45cd06c130cbfe6ff6565825c492079287..3b8fd0b7f9a5d215119c6507e1af3068c7f543a2 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -262,6 +262,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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private long keepAliveChallenge;
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// CraftBukkit start - multithreaded fields
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private final AtomicInteger chatSpamTickCount = new AtomicInteger();
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+ private final java.util.concurrent.atomic.AtomicInteger tabSpamLimiter = new java.util.concurrent.atomic.AtomicInteger(); // Paper - configurable tab spam limits
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// CraftBukkit end
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private int dropSpamTickCount;
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private double firstGoodX;
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@@ -416,6 +417,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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this.server.getProfiler().pop();
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// CraftBukkit start
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for (int spam; (spam = this.chatSpamTickCount.get()) > 0 && !this.chatSpamTickCount.compareAndSet(spam, spam - 1); ) ;
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+ if (tabSpamLimiter.get() > 0) tabSpamLimiter.getAndDecrement(); // Paper - split to seperate variable
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/* Use thread-safe field access instead
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if (this.chatSpamTickCount > 0) {
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--this.chatSpamTickCount;
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@@ -793,7 +795,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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public void handleCustomCommandSuggestions(ServerboundCommandSuggestionPacket packet) {
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// PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel()); // Paper - run this async
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// CraftBukkit start
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- if (this.chatSpamTickCount.addAndGet(1) > 500 && !this.server.getPlayerList().isOp(this.player.getGameProfile())) {
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+ if (this.chatSpamTickCount.addAndGet(io.papermc.paper.configuration.GlobalConfiguration.get().spamLimiter.tabSpamIncrement) > io.papermc.paper.configuration.GlobalConfiguration.get().spamLimiter.tabSpamLimit && !this.server.getPlayerList().isOp(this.player.getGameProfile())) { // Paper start - split and make configurable
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server.scheduleOnMain(() -> this.disconnect(Component.translatable("disconnect.spam", new Object[0]))); // Paper
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return;
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}
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