Paper/patches/server/0159-handle-ServerboundKeepAlivePacket-async.patch

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 5 Oct 2017 01:54:07 +0100
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Subject: [PATCH] handle ServerboundKeepAlivePacket async
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In 1.12.2, Mojang moved the processing of ServerboundKeepAlivePacket off the main
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thread, while entirely correct for the server, this causes issues with
plugins which are expecting the PlayerQuitEvent on the main thread.
In order to counteract some bad behavior, we will post handling of the
disconnection to the main thread, but leave the actual processing of the packet
off the main thread.
also adding some additional logging in order to help work out what is causing
random disconnections for clients.
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 f4f7d9947edc35e02739adc06a8f3c3c2a431771..f774583cce32d70f32ed7dd0ec1b45b8f00b029a 100644
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--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
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@@ -3122,14 +3122,18 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
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@Override
public void handleKeepAlive(ServerboundKeepAlivePacket packet) {
- PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel()); // CraftBukkit
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+ //PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel()); // CraftBukkit // Paper - This shouldn't be on the main thread
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if (this.keepAlivePending && packet.getId() == this.keepAliveChallenge) {
int i = (int) (Util.getMillis() - this.keepAliveTime);
this.player.latency = (this.player.latency * 3 + i) / 4;
this.keepAlivePending = false;
} else if (!this.isSingleplayerOwner()) {
+ // Paper start - This needs to be handled on the main thread for plugins
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+ server.submit(() -> {
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this.disconnect(Component.translatable("disconnect.timeout"));
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+ });
+ // Paper end
}
}