papermc/Spigot-Server-Patches/0239-handle-PacketPlayInKeepAlive-async.patch
Zach Brown 6f2009754d
Stop explicitly blocking Vanilla Method Profiler
At the time this was re-added, there was concern around how the JIT
would handle the system property that enabled it.

This shouldn't be a problem, and as such we no longer need to block
access to it.

The Vanilla Method Profiler will not provide much to most users however
there is no harm in providing it as an option. For most users, the
recommended and supported method for determining performance issues with
Paper will continue to be Timings.
2018-03-31 14:55:42 -04:00

46 lines
2.3 KiB
Diff

From 041fa5d77011eb2a6a790046228fa84d3afbaece Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 5 Oct 2017 01:54:07 +0100
Subject: [PATCH] handle PacketPlayInKeepAlive async
In 1.12.2, Mojang moved the processing of PacketPlayInKeepAlive off the main
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/PlayerConnection.java b/src/main/java/net/minecraft/server/PlayerConnection.java
index aa57ff8e..869a2b40 100644
--- a/src/main/java/net/minecraft/server/PlayerConnection.java
+++ b/src/main/java/net/minecraft/server/PlayerConnection.java
@@ -2230,14 +2230,20 @@ public class PlayerConnection implements PacketListenerPlayIn, ITickable {
}
public void a(PacketPlayInKeepAlive packetplayinkeepalive) {
- PlayerConnectionUtils.ensureMainThread(packetplayinkeepalive, this, this.player.x()); // CraftBukkit
+ //PlayerConnectionUtils.ensureMainThread(packetplayinkeepalive, this, this.player.x()); // CraftBukkit // Paper - This shouldn't be on the main thread
if (this.g && packetplayinkeepalive.a() == this.h) {
int i = (int) (this.d() - this.f);
this.player.ping = (this.player.ping * 3 + i) / 4;
this.g = false;
} else if (!this.player.getName().equals(this.minecraftServer.Q())) {
- this.disconnect(new ChatMessage("disconnect.timeout", new Object[0]));
+ // Paper start - This needs to be handled on the main thread for plugins
+ PlayerConnection.LOGGER.warn("{} sent an invalid keepalive! pending keepalive: {} got id: {} expected id: {}",
+ this.player.getName(), this.isPendingPing(), packetplayinkeepalive.a(), this.getKeepAliveID());
+ minecraftServer.postToMainThread(() -> {
+ this.disconnect(new ChatMessage("disconnect.timeout", new Object[0]));
+ });
+ // Paper end
}
}
--
2.14.3