1 files changed, 65 insertions, 0 deletions
diff --git a/patches/server/0811-Add-support-for-Proxy-Protocol.patch b/patches/server/0811-Add-support-for-Proxy-Protocol.patch
new file mode 100644
index 0000000000..30de84af65
--- /dev/null
+++ b/patches/server/0811-Add-support-for-Proxy-Protocol.patch
@@ -0,0 +1,65 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: PanSzelescik <[email protected]>
+Date: Thu, 7 Apr 2022 16:13:39 +0200
+Subject: [PATCH] Add support for Proxy Protocol
+
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index 6da6120bc37b573a5398f1593b72ffc7f569682b..79beac737c17412913983614bd478d33e3c6ed58 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -30,6 +30,7 @@ dependencies {
+     log4jPlugins.annotationProcessorConfigurationName("org.apache.logging.log4j:log4j-core:2.19.0") // Paper - Needed to generate meta for our Log4j plugins
+     runtimeOnly(log4jPlugins.output)
+     alsoShade(log4jPlugins.output)
++    implementation("io.netty:netty-codec-haproxy:4.1.97.Final") // Paper - Add support for proxy protocol
+     // Paper end
+     implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
+     implementation("org.ow2.asm:asm:9.5")
+diff --git a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+index 54c7f34ba3dc8466223e589702d0c93af8cf52a0..79326308f6126f84a3cbb3d5a33302de048d8a50 100644
+--- a/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
++++ b/src/main/java/net/minecraft/server/network/ServerConnectionListener.java
+@@ -111,6 +111,12 @@ public class ServerConnectionListener {
+             ServerConnectionListener.LOGGER.info("Paper: Using " + com.velocitypowered.natives.util.Natives.cipher.getLoadedVariant() + " cipher from Velocity.");
+             // Paper end
+ 
++            // Paper start - indicate Proxy Protocol usage
++            if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) {
++                ServerConnectionListener.LOGGER.info("Paper: Using Proxy Protocol");
++            }
++            // Paper end
++
+             this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer<Channel>() {
+                 protected void initChannel(Channel channel) {
+                     Connection.setInitialProtocolAttributes(channel);
+@@ -129,6 +135,29 @@ public class ServerConnectionListener {
+                     Connection object = j > 0 ? new RateKickingConnection(j) : new Connection(PacketFlow.SERVERBOUND); // CraftBukkit - decompile error
+ 
+                     //ServerConnectionListener.this.connections.add(object); // Paper
++                    // Paper start - Add support for Proxy Protocol
++                    if (io.papermc.paper.configuration.GlobalConfiguration.get().proxies.proxyProtocol) {
++                        channel.pipeline().addAfter("timeout", "haproxy-decoder", new io.netty.handler.codec.haproxy.HAProxyMessageDecoder());
++                        channel.pipeline().addAfter("haproxy-decoder", "haproxy-handler", new ChannelInboundHandlerAdapter() {
++                            @Override
++                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
++                                if (msg instanceof io.netty.handler.codec.haproxy.HAProxyMessage message) {
++                                    if (message.command() == io.netty.handler.codec.haproxy.HAProxyCommand.PROXY) {
++                                        String realaddress = message.sourceAddress();
++                                        int realport = message.sourcePort();
++
++                                        SocketAddress socketaddr = new java.net.InetSocketAddress(realaddress, realport);
++
++                                        Connection connection = (Connection) channel.pipeline().get("packet_handler");
++                                        connection.address = socketaddr;
++                                    }
++                                } else {
++                                    super.channelRead(ctx, msg);
++                                }
++                            }
++                        });
++                    }
++                    // Paper end
+                     pending.add(object); // Paper
+                     ((Connection) object).configurePacketHandler(channelpipeline);
+                     ((Connection) object).setListenerForServerboundHandshake(new ServerHandshakePacketListenerImpl(ServerConnectionListener.this.server, (Connection) object));