1.21.11: Proxy Lag?

[bobhenl]

Are you using MySQL?

Yes

Are you using a proxy?

Yes - Velocity

"/version ChatControlRed" - plugin version

11.7.2

Optional: Error log

No response

ZIP of "/chc debug"

No response

Steps to reproduce

https://spark.lucko.me/DaqxXRuCGp

[20:01:10 ERROR]: --- DO NOT REPORT THIS TO PAPER - If you think this is a Leaf bug, please report it at https://github.com/Winds-Studio/Leaf/issues - THIS IS NOT A PAPER BUG OR CRASH - 1.21.11-87-2a5d301 (MC: 1.21.11) ---
[20:01:10 ERROR]: The server has not responded for 50 seconds! Creating thread dump
[20:01:10 ERROR]: ------------------------------
[20:01:10 ERROR]: Server thread dump (Look for plugins here before reporting to Leaf!):
[20:01:10 ERROR]: ------------------------------
[20:01:10 ERROR]: Current Thread: Server thread
[20:01:10 ERROR]:       PID: 55 | Suspended: false | Native: false | State: RUNNABLE
[20:01:10 ERROR]:       Stack:
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4133)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$NotBehind.match(Pattern.java:5499)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$Branch.match(Pattern.java:4914)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$Ques.match(Pattern.java:4410)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$GroupTail.match(Pattern.java:5000)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$BranchConn.match(Pattern.java:4878)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$BmpCharProperty.match(Pattern.java:4134)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$Branch.match(Pattern.java:4914)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$GroupHead.match(Pattern.java:4969)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$Ques.match(Pattern.java:4410)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$GroupCurly.match0(Pattern.java:4773)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$GroupCurly.match(Pattern.java:4715)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$NotBehind.match(Pattern.java:5499)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Pattern$Start.match(Pattern.java:3787)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Matcher.search(Matcher.java:1765)
[20:01:10 ERROR]:               java.base@25.0.2/java.util.regex.Matcher.find(Matcher.java:785)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.model.CompChatColor.convertLegacyToMini(CompChatColor.java:864)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.model.SimpleComponent$ConditionalComponent.deserialize(SimpleComponent.java:1361)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.invoke.DirectMethodHandle$Holder.invokeStatic(DirectMethodHandle$Holder)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.invoke.LambdaForm$MH/0x0000000067f92c00.invoke(LambdaForm$MH)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.invoke.Invokers$Holder.invokeExact_MT(Invokers$Holder)
[20:01:10 ERROR]:               java.base@25.0.2/jdk.internal.reflect.DirectMethodHandleAccessor.invokeImpl(DirectMethodHandleAccessor.java:155)
[20:01:10 ERROR]:               java.base@25.0.2/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.reflect.Method.invoke(Method.java:565)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.ReflectionUtil.invokeStatic(ReflectionUtil.java:358)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.SerializeUtilCore.deserialize(SerializeUtilCore.java:380)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.collection.SerializedMap.getList(SerializedMap.java:600)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.collection.SerializedMap.getList(SerializedMap.java:565)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.model.SimpleComponent.deserialize(SimpleComponent.java:1171)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.proxy.message.IncomingMessage.readSimpleComponent(IncomingMessage.java:108)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.listener.ChatControlProxyListenerBukkit.onMessageReceived(ChatControlProxyListenerBukkit.java:118)
[20:01:10 ERROR]:               ChatControl-11.7.2.jar//org.mineacademy.chatcontrol.lib.platform.BukkitPluginMessage.onPluginMessageReceived(BukkitPluginMessage.java:67)
[20:01:10 ERROR]:               org.bukkit.plugin.messaging.StandardMessenger.dispatchIncomingMessage(StandardMessenger.java:484)
[20:01:10 ERROR]:               net.minecraft.server.network.ServerCommonPacketListenerImpl.handleCustomPayload(ServerCommonPacketListenerImpl.java:219)
[20:01:10 ERROR]:               net.minecraft.server.network.ServerGamePacketListenerImpl.handleCustomPayload(ServerGamePacketListenerImpl.java:3807)
[20:01:10 ERROR]:               net.minecraft.network.protocol.common.ServerboundCustomPayloadPacket.handle(ServerboundCustomPayloadPacket.java:28)
[20:01:10 ERROR]:               net.minecraft.network.protocol.common.ServerboundCustomPayloadPacket.handle(ServerboundCustomPayloadPacket.java:13)
[20:01:10 ERROR]:               net.minecraft.network.PacketProcessor$ListenerAndPacket.handle(PacketProcessor.java:99)
[20:01:10 ERROR]:               net.minecraft.network.PacketProcessor.executeSinglePacket(PacketProcessor.java:33)
[20:01:10 ERROR]:               net.minecraft.server.MinecraftServer.runAllTasksAtTickStart(MinecraftServer.java:1252)
[20:01:10 ERROR]:               net.minecraft.server.MinecraftServer.processPacketsAndTick(MinecraftServer.java:1768)
[20:01:10 ERROR]:               net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1434)
[20:01:10 ERROR]:               net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:430)
[20:01:10 ERROR]:               net.minecraft.server.MinecraftServer$$Lambda/0x000000006313c790.run(Unknown Source)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.Thread.runWith(Thread.java:1487)
[20:01:10 ERROR]:               java.base@25.0.2/java.lang.Thread.run(Thread.java:1474)
[20:01:10 ERROR]: ------------------------------
[20:01:10 ERROR]: --- DO NOT REPORT THIS TO PAPER - If you think this is a Leaf bug, please report it at https://github.com/Winds-Studio/Leaf/issues - THIS IS NOT A PAPER BUG OR CRASH ---
[20:01:10 ERROR]: ------------------------------

some strange lags

[bobhenl]

@Kangobot

[kangobot]

Hey, sorry the bot failed on you the first time.

This is a confirmed bug — the domain-detection regex in convertLegacyToMini() can cause catastrophic backtracking on certain proxy messages, freezing your server thread for 50+ seconds.

I've submitted a fix that:

1. Uses a possessive quantifier on the regex to prevent the exponential backtracking
2. Skips the expensive regex entirely for input parts longer than 253 characters (max possible domain length), since those can never be domains anyway

Should be resolved in the next build.
🔧 Foundation draft fix: kangarko/Foundation#419

[kangarko]

Thanks, sorry for the delay this time, I am still doing everything manually to ensure quality control. Shipping a fix tonight!