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28b4027d45
Due to the weakly consistent of ConcurrentLinkedQueue iterator, at some points, packet will be resent twice times or more, causing some weird behaviors (e.g. kicked for illegal movement since the same ClientboundPlayerPositionPacket was sent two times). This changes for the patch add a flag for marking if the packet was consumed to prevent such issue and ensure consistently of the packet queue.
141 lines
9 KiB
Diff
141 lines
9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Andrew Steinborn <git@steinborn.me>
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Date: Tue, 11 May 2021 17:39:22 -0400
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Subject: [PATCH] Add Unix domain socket support
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For Windows and ARM support, JEP-380 is required:
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https://inside.java/2021/02/03/jep380-unix-domain-sockets-channels/
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This will be possible as of the Minecraft 1.17 Java version bump.
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Tested-by: Mariell Hoversholm <proximyst@proximyst.com>
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Reviewed-by: Mariell Hoversholm <proximyst@proximyst.com>
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diff --git a/src/main/java/net/minecraft/network/Connection.java b/src/main/java/net/minecraft/network/Connection.java
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index a7ab818440dc98087d877d7efdfafbf65e9ca92d..ea6c1439e92c24194cde4dcf6388363a8cc5d649 100644
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--- a/src/main/java/net/minecraft/network/Connection.java
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+++ b/src/main/java/net/minecraft/network/Connection.java
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@@ -691,6 +691,11 @@ public class Connection extends SimpleChannelInboundHandler<Packet<?>> {
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// Spigot Start
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public SocketAddress getRawAddress()
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{
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+ // Paper start - this can be nullable in the case of a Unix domain socket, so if it is, fake something
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+ if (this.channel.remoteAddress() == null) {
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+ return new java.net.InetSocketAddress(java.net.InetAddress.getLoopbackAddress(), 0);
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+ }
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+ // Paper end
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return this.channel.remoteAddress();
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}
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// Spigot End
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diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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index e11d90ca94e9ec34f4593cf0dde2f5853bef7ae5..7dba8ef3291987cc428cd337693c3446d01e435b 100644
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--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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+++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
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@@ -224,6 +224,20 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
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this.setEnforceWhitelist(dedicatedserverproperties.enforceWhitelist);
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// this.worldData.setGameType(dedicatedserverproperties.gamemode); // CraftBukkit - moved to world loading
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DedicatedServer.LOGGER.info("Default game type: {}", dedicatedserverproperties.gamemode);
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+ // Paper start - Unix domain socket support
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+ java.net.SocketAddress bindAddress;
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+ if (this.getLocalIp().startsWith("unix:")) {
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+ if (!io.netty.channel.epoll.Epoll.isAvailable()) {
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+ DedicatedServer.LOGGER.error("**** INVALID CONFIGURATION!");
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+ DedicatedServer.LOGGER.error("You are trying to use a Unix domain socket but you're not on a supported OS.");
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+ return false;
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+ } else if (!io.papermc.paper.configuration.GlobalConfiguration.get().proxies.velocity.enabled && !org.spigotmc.SpigotConfig.bungee) {
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+ DedicatedServer.LOGGER.error("**** INVALID CONFIGURATION!");
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+ DedicatedServer.LOGGER.error("Unix domain sockets require IPs to be forwarded from a proxy.");
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+ return false;
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+ }
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+ bindAddress = new io.netty.channel.unix.DomainSocketAddress(this.getLocalIp().substring("unix:".length()));
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+ } else {
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InetAddress inetaddress = null;
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if (!this.getLocalIp().isEmpty()) {
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@@ -233,12 +247,15 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
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if (this.getPort() < 0) {
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this.setPort(dedicatedserverproperties.serverPort);
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}
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+ bindAddress = new java.net.InetSocketAddress(inetaddress, this.getPort());
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+ }
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+ // Paper end
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this.initializeKeyPair();
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DedicatedServer.LOGGER.info("Starting Minecraft server on {}:{}", this.getLocalIp().isEmpty() ? "*" : this.getLocalIp(), this.getPort());
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try {
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- this.getConnection().startTcpServerListener(inetaddress, this.getPort());
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+ this.getConnection().bind(bindAddress); // Paper - Unix domain socket support
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} catch (IOException ioexception) {
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DedicatedServer.LOGGER.warn("**** FAILED TO BIND TO PORT!");
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DedicatedServer.LOGGER.warn("The exception was: {}", ioexception.toString());
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diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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index 83af90fb0dcb4b1a5a68f655cf66d101b472e8e7..b80aedd2002959b4026c27ce76b3ed17f0acfb5b 100644
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--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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+++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
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@@ -80,7 +80,12 @@ public class ServerConnectionListener {
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this.running = true;
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}
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+ // Paper start
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public void startTcpServerListener(@Nullable InetAddress address, int port) throws IOException {
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+ bind(new java.net.InetSocketAddress(address, port));
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+ }
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+ public void bind(java.net.SocketAddress address) throws IOException {
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+ // Paper end
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List list = this.channels;
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synchronized (this.channels) {
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@@ -88,7 +93,11 @@ public class ServerConnectionListener {
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LazyLoadedValue lazyinitvar;
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if (Epoll.isAvailable() && this.server.isEpollEnabled()) {
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+ if (address instanceof io.netty.channel.unix.DomainSocketAddress) {
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+ oclass = io.netty.channel.epoll.EpollServerDomainSocketChannel.class;
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+ } else {
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oclass = EpollServerSocketChannel.class;
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+ }
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lazyinitvar = ServerConnectionListener.SERVER_EPOLL_EVENT_GROUP;
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ServerConnectionListener.LOGGER.info("Using epoll channel type");
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} else {
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@@ -116,7 +125,7 @@ public class ServerConnectionListener {
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((Connection) object).setListener(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));
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io.papermc.paper.network.ChannelInitializeListenerHolder.callListeners(channel); // Paper
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}
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- }).group((EventLoopGroup) lazyinitvar.get()).localAddress(address, port)).option(ChannelOption.AUTO_READ, false).bind().syncUninterruptibly()); // CraftBukkit
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+ }).group((EventLoopGroup) lazyinitvar.get()).localAddress(address)).option(ChannelOption.AUTO_READ, false).bind().syncUninterruptibly()); // CraftBukkit // Paper
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}
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}
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diff --git a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
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index bce2f0f66f9e5493184fd0b5d2758e136a0e05b5..446a5fb08691a45a54bed3b5e7e68842f21e60d0 100644
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--- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
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+++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
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@@ -44,6 +44,7 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
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this.connection.setProtocol(ConnectionProtocol.LOGIN);
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// CraftBukkit start - Connection throttle
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try {
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+ if (!(this.connection.channel.localAddress() instanceof io.netty.channel.unix.DomainSocketAddress)) { // Paper - the connection throttle is useless when you have a Unix domain socket
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long currentTime = System.currentTimeMillis();
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long connectionThrottle = this.server.server.getConnectionThrottle();
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InetAddress address = ((java.net.InetSocketAddress) this.connection.getRemoteAddress()).getAddress();
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@@ -72,6 +73,7 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
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}
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}
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}
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+ } // Paper - add closing bracket for if check above
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} catch (Throwable t) {
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org.apache.logging.log4j.LogManager.getLogger().debug("Failed to check connection throttle", t);
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}
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@@ -120,8 +122,11 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
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// Paper end
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// if (org.spigotmc.SpigotConfig.bungee) { // Paper - comment out, we check above!
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if ( ( split.length == 3 || split.length == 4 ) && ( ServerHandshakePacketListenerImpl.BYPASS_HOSTCHECK || ServerHandshakePacketListenerImpl.HOST_PATTERN.matcher( split[1] ).matches() ) ) { // Paper
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+ // Paper start - Unix domain socket support
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+ java.net.SocketAddress socketAddress = connection.getRemoteAddress();
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packet.hostName = split[0];
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- connection.address = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) this.connection.getRemoteAddress()).getPort());
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+ connection.address = new java.net.InetSocketAddress(split[1], socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getPort() : 0);
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+ // Paper end
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connection.spoofedUUID = com.mojang.util.UUIDTypeAdapter.fromString( split[2] );
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} else
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{
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