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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
52 lines
3.6 KiB
Diff
52 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: PanSzelescik <panszelescik@gmail.com>
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Date: Thu, 7 Apr 2022 16:13:39 +0200
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Subject: [PATCH] Add support for Proxy Protocol
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diff --git a/build.gradle.kts b/build.gradle.kts
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index 688e901b75e95941e0101cc7d0c4effa7993cf3f..9de7a09c5f1b23754a2823978fa3ff218aadcfa7 100644
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--- a/build.gradle.kts
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+++ b/build.gradle.kts
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@@ -28,6 +28,7 @@ dependencies {
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log4jPlugins.annotationProcessorConfigurationName("org.apache.logging.log4j:log4j-core:2.19.0") // Paper - Needed to generate meta for our Log4j plugins
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runtimeOnly(log4jPlugins.output)
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alsoShade(log4jPlugins.output)
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+ implementation("io.netty:netty-codec-haproxy:4.1.97.Final") // Paper - Add support for proxy protocol
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// Paper end
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implementation("org.apache.logging.log4j:log4j-iostreams:2.22.1") // Paper - remove exclusion
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implementation("org.ow2.asm:asm-commons:9.7")
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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 c63c194c44646e6bc1a59426552787011fc2ced5..96355e1da8feb6687ea0069dda4a82fcd7e25e8a 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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@@ -123,6 +123,29 @@ public class ServerConnectionListener {
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Connection object = j > 0 ? new RateKickingConnection(j) : new Connection(PacketFlow.SERVERBOUND); // CraftBukkit - decompile error
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//ServerConnectionListener.this.connections.add(object); // Paper
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+ // Paper start - Add support for Proxy Protocol
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+ if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) {
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+ channel.pipeline().addAfter("timeout", "haproxy-decoder", new io.netty.handler.codec.haproxy.HAProxyMessageDecoder());
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+ channel.pipeline().addAfter("haproxy-decoder", "haproxy-handler", new ChannelInboundHandlerAdapter() {
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+ @Override
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+ public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
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+ if (msg instanceof io.netty.handler.codec.haproxy.HAProxyMessage message) {
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+ if (message.command() == io.netty.handler.codec.haproxy.HAProxyCommand.PROXY) {
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+ String realaddress = message.sourceAddress();
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+ int realport = message.sourcePort();
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+
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+ SocketAddress socketaddr = new java.net.InetSocketAddress(realaddress, realport);
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+
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+ Connection connection = (Connection) channel.pipeline().get("packet_handler");
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+ connection.address = socketaddr;
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+ }
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+ } else {
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+ super.channelRead(ctx, msg);
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+ }
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+ }
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+ });
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+ }
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+ // Paper end - Add support for proxy protocol
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pending.add(object); // Paper - prevent blocking on adding a new connection while the server is ticking
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((Connection) object).configurePacketHandler(channelpipeline);
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((Connection) object).setListenerForServerboundHandshake(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));
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