From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Shane Freeder Date: Thu, 5 Oct 2017 01:54:07 +0100 Subject: [PATCH] handle ServerboundKeepAlivePacket async In 1.12.2, Mojang moved the processing of ServerboundKeepAlivePacket 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/network/ServerCommonPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java index 4ff58939269f420fab18fea8fc3887e86297b99e..156cb6a00a2580eb16e05c80bc3267128b5804a3 100644 --- a/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java +++ b/src/main/java/net/minecraft/server/network/ServerCommonPacketListenerImpl.java @@ -84,14 +84,18 @@ public abstract class ServerCommonPacketListenerImpl implements ServerCommonPack @Override public void handleKeepAlive(ServerboundKeepAlivePacket packet) { - PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // CraftBukkit + //PacketUtils.ensureRunningOnSameThread(packet, this, this.player.serverLevel()); // CraftBukkit // Paper - handle ServerboundKeepAlivePacket async if (this.keepAlivePending && packet.getId() == this.keepAliveChallenge) { int i = (int) (Util.getMillis() - this.keepAliveTime); this.latency = (this.latency * 3 + i) / 4; this.keepAlivePending = false; } else if (!this.isSingleplayerOwner()) { - this.disconnect(ServerCommonPacketListenerImpl.TIMEOUT_DISCONNECTION_MESSAGE); + // Paper start - This needs to be handled on the main thread for plugins + server.submit(() -> { + this.disconnect(ServerCommonPacketListenerImpl.TIMEOUT_DISCONNECTION_MESSAGE); + }); + // Paper end - This needs to be handled on the main thread for plugins } }