112 lines
4.1 KiB
Diff
112 lines
4.1 KiB
Diff
From 5343292903efcc962a2a510267018bb5872c3995 Mon Sep 17 00:00:00 2001
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From: Johannes Donath <johannesd@torchmind.com>
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Date: Sat, 4 Jul 2015 06:31:33 +0200
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Subject: [PATCH] Add basic support for configurable tab-complete throttling
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diff --git a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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index 6495e7f2..b6845bc4 100644
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--- a/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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+++ b/api/src/main/java/net/md_5/bungee/api/ProxyConfig.java
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@@ -130,4 +130,21 @@ public interface ProxyConfig
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// Waterfall Options
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//
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+ // Throttling options
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+
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+ /**
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+ * How often tab-complete packets can be sent.
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+ * <br>
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+ * Values in milliseconds.
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+ *
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+ * @return how often tab-complete packets can be sent in milliseconds
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+ */
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+ int getTabThrottle();
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+
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+ /**
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+ * Should we disable the tab completion limit for 1.13+ clients
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+ *
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+ * @return should we disable the tab completion limit for 1.13+ clients
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+ */
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+ boolean isDisableModernTabLimiter();
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}
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diff --git a/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java b/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
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index 741ebfde..91743f01 100644
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--- a/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
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+++ b/proxy/src/main/java/io/github/waterfallmc/waterfall/conf/WaterfallConfiguration.java
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@@ -7,11 +7,37 @@ import java.io.File;
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public class WaterfallConfiguration extends Configuration {
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+ /*
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+ * Throttling options
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+ * Helps prevent players from overloading the servers behind us
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+ */
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+
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+ /**
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+ * How often players are allowed to send tab throttle.
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+ * Value in milliseconds.
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+ * <p/>
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+ * Default is one packet per second.
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+ */
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+ private int tabThrottle = 1000;
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+ private boolean disableModernTabLimiter = true;
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+
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@Override
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public void load() {
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super.load();
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YamlConfig config = new YamlConfig(new File("waterfall.yml"));
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config.load(false); // Load, but no permissions
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+ // Throttling options
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+ tabThrottle = config.getInt("throttling.tab_complete", tabThrottle);
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+ disableModernTabLimiter = config.getBoolean("disable_modern_tab_limiter", disableModernTabLimiter);
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}
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+ @Override
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+ public int getTabThrottle() {
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+ return tabThrottle;
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+ }
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+
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+ @Override
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+ public boolean isDisableModernTabLimiter() {
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+ return disableModernTabLimiter;
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+ }
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}
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diff --git a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
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index f80515d4..050cc29b 100644
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--- a/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
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+++ b/proxy/src/main/java/net/md_5/bungee/connection/UpstreamBridge.java
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@@ -51,6 +51,8 @@ public class UpstreamBridge extends PacketHandler
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private final ProxyServer bungee;
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private final UserConnection con;
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+ private long lastTabCompletion = -1;
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+
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public UpstreamBridge(ProxyServer bungee, UserConnection con)
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{
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this.bungee = bungee;
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@@ -230,6 +232,20 @@ public class UpstreamBridge extends PacketHandler
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@Override
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public void handle(TabCompleteRequest tabComplete) throws Exception
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{
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+ // Waterfall start - tab limiter
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+ if ( bungee.getConfig().getTabThrottle() > 0 &&
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+ ( con.getPendingConnection().getVersion() >= ProtocolConstants.MINECRAFT_1_13
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+ && !bungee.getConfig().isDisableModernTabLimiter()))
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+ {
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+ long now = System.currentTimeMillis();
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+ if ( lastTabCompletion > 0 && (now - lastTabCompletion) <= bungee.getConfig().getTabThrottle() )
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+ {
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+ throw CancelSendSignal.INSTANCE;
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+ }
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+ lastTabCompletion = now;
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+ }
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+
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+ // Waterfall end - tab limiter
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List<String> suggestions = new ArrayList<>();
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boolean isRegisteredCommand = false;
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boolean isCommand = tabComplete.getCursor().startsWith( "/" );
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--
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2.44.0
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