PaperSpigot-Parent/CraftBukkit-Patches/0119-Fix-race-condition-that-could-kill-connections-befor.patch
Zach Brown 19972e09b8 Update SpigotMC's patches
5a0150f586ed3eb15fe6f1f596d1a5a7d806f0f9 Fix ITEM_BREAK
e6a3911057bd94d8bd7021cbb4923fb84fb106d1 Upstream merge
d1cdcf8d4c3639f956474f02ed662517cffbe23e Remove old patch
068df64aeee368377e1673667bffc7a6dcf90554 Rebuild all patches
2014-11-30 16:16:48 -06:00

64 lines
2.8 KiB
Diff

From 3b15cce121285a0a63220940aa09ba145ba79504 Mon Sep 17 00:00:00 2001
From: Jonas Konrad <me@yawk.at>
Date: Fri, 25 Apr 2014 23:46:46 +0200
Subject: [PATCH] Fix race condition that could kill connections before they
were initiated
Because NetworkManagers are registered before they get their channel in
channelActive, the ServerConnection would remove them sometimes because
it thought they were disconnected. This commit fixes this by introducing
a 'preparing' variable that is true while the NetworkManager is not
initialized. The ServerConnection does not remove NetworkManagers with
this flag.
diff --git a/src/main/java/net/minecraft/server/NetworkManager.java b/src/main/java/net/minecraft/server/NetworkManager.java
index 65b66cd..b4eb893 100644
--- a/src/main/java/net/minecraft/server/NetworkManager.java
+++ b/src/main/java/net/minecraft/server/NetworkManager.java
@@ -35,6 +35,7 @@ public class NetworkManager extends SimpleChannelInboundHandler {
public SocketAddress j;
public java.util.UUID spoofedUUID;
public com.mojang.authlib.properties.Property[] spoofedProfile;
+ public boolean preparing = true;
// Spigot End
private PacketListener k;
private IChatBaseComponent l;
@@ -49,6 +50,9 @@ public class NetworkManager extends SimpleChannelInboundHandler {
super.channelActive(channelhandlercontext);
this.i = channelhandlercontext.channel();
this.j = this.i.remoteAddress();
+ // Spigot Start
+ this.preparing = false;
+ // Spigot End
try {
this.a(EnumProtocol.HANDSHAKING);
@@ -163,6 +167,9 @@ public class NetworkManager extends SimpleChannelInboundHandler {
}
public void close(IChatBaseComponent ichatbasecomponent) {
+ // Spigot Start
+ this.preparing = false;
+ // Spigot End
if (this.i.isOpen()) {
this.i.close(); // We can't wait as this may be called from an event loop.
this.l = ichatbasecomponent;
diff --git a/src/main/java/net/minecraft/server/ServerConnection.java b/src/main/java/net/minecraft/server/ServerConnection.java
index 6c6ffa7..de1b3d1 100644
--- a/src/main/java/net/minecraft/server/ServerConnection.java
+++ b/src/main/java/net/minecraft/server/ServerConnection.java
@@ -71,6 +71,10 @@ public class ServerConnection {
if (!networkmanager.h()) {
if (!networkmanager.g()) {
+ // Spigot Start
+ // Fix a race condition where a NetworkManager could be unregistered just before connection.
+ if (networkmanager.preparing) continue;
+ // Spigot End
iterator.remove();
networkmanager.l();
} else {
--
2.1.0