Added API to get player ha proxy address

paper-server/patches/sources/net/minecraft/network/Connection.java.patch

@@ -29,7 +29,7 @@
      @Nullable
      private volatile PacketListener disconnectListener;
      @Nullable
-@@ -114,7 +119,41 @@
+@@ -114,7 +119,42 @@
      private volatile DisconnectionDetails delayedDisconnect;
      @Nullable
      BandwidthDebugMonitor bandwidthDebugMonitor;
@@ -67,11 +67,12 @@
 +        this.stopReadingPackets = true;
 +    }
 +    // Paper end - packet limiter
++    @Nullable public SocketAddress haProxyAddress; // Paper - Add API to get player's proxy address
 +
      public Connection(PacketFlow side) {
          this.receiving = side;
      }
-@@ -123,6 +162,9 @@
+@@ -123,6 +163,9 @@
          super.channelActive(channelhandlercontext);
          this.channel = channelhandlercontext.channel();
          this.address = this.channel.remoteAddress();
@@ -81,7 +82,7 @@
          if (this.delayedDisconnect != null) {
              this.disconnect(this.delayedDisconnect);
          }
-@@ -134,6 +176,21 @@
+@@ -134,6 +177,21 @@
      }
  
      public void exceptionCaught(ChannelHandlerContext channelhandlercontext, Throwable throwable) {
@@ -103,7 +104,7 @@
          if (throwable instanceof SkipPacketException) {
              Connection.LOGGER.debug("Skipping packet due to errors", throwable.getCause());
          } else {
-@@ -141,8 +198,10 @@
+@@ -141,8 +199,10 @@
  
              this.handlingFault = true;
              if (this.channel.isOpen()) {
@@ -114,7 +115,7 @@
                      this.disconnect((Component) Component.translatable("disconnect.timeout"));
                  } else {
                      MutableComponent ichatmutablecomponent = Component.translatable("disconnect.genericReason", "Internal Exception: " + String.valueOf(throwable));
-@@ -155,6 +214,7 @@
+@@ -155,6 +215,7 @@
                          disconnectiondetails = new DisconnectionDetails(ichatmutablecomponent);
                      }
  
@@ -122,7 +123,7 @@
                      if (flag) {
                          Connection.LOGGER.debug("Failed to sent packet", throwable);
                          if (this.getSending() == PacketFlow.CLIENTBOUND) {
-@@ -176,6 +236,7 @@
+@@ -176,6 +237,7 @@
  
              }
          }
@@ -130,7 +131,7 @@
      }
  
      protected void channelRead0(ChannelHandlerContext channelhandlercontext, Packet<?> packet) {
-@@ -185,11 +246,61 @@
+@@ -185,11 +247,61 @@
              if (packetlistener == null) {
                  throw new IllegalStateException("Received a packet before the packet listener was initialized");
              } else {
@@ -192,7 +193,7 @@
                      } catch (RejectedExecutionException rejectedexecutionexception) {
                          this.disconnect((Component) Component.translatable("multiplayer.disconnect.server_shutdown"));
                      } catch (ClassCastException classcastexception) {
-@@ -205,7 +316,7 @@
+@@ -205,7 +317,7 @@
      }
  
      private static <T extends PacketListener> void genericsFtw(Packet<T> packet, PacketListener listener) {
@@ -201,7 +202,7 @@
      }
  
      private void validateListener(ProtocolInfo<?> state, PacketListener listener) {
-@@ -418,12 +529,26 @@
+@@ -418,12 +530,26 @@
          }
      }
  
@@ -228,7 +229,7 @@
          }
  
          if (!this.isConnected() && !this.disconnectionHandled) {
-@@ -431,7 +556,7 @@
+@@ -431,7 +557,7 @@
          }
  
          if (this.channel != null) {
@@ -237,7 +238,7 @@
          }
  
          if (this.tickCount++ % 20 == 0) {
-@@ -464,12 +589,15 @@
+@@ -464,12 +590,15 @@
      }
  
      public void disconnect(DisconnectionDetails disconnectionInfo) {
@@ -254,7 +255,7 @@
              this.disconnectionDetails = disconnectionInfo;
          }
  
-@@ -537,7 +665,7 @@
+@@ -537,7 +666,7 @@
      }
  
      public void configurePacketHandler(ChannelPipeline pipeline) {
@@ -263,7 +264,7 @@
              public void write(ChannelHandlerContext channelhandlercontext, Object object, ChannelPromise channelpromise) throws Exception {
                  super.write(channelhandlercontext, object, channelpromise);
              }
-@@ -633,6 +761,7 @@
+@@ -633,6 +762,7 @@
              } else {
                  this.channel.pipeline().addAfter("prepender", "compress", new CompressionEncoder(compressionThreshold));
              }
@@ -271,7 +272,7 @@
          } else {
              if (this.channel.pipeline().get("decompress") instanceof CompressionDecoder) {
                  this.channel.pipeline().remove("decompress");
-@@ -641,6 +770,7 @@
+@@ -641,6 +771,7 @@
              if (this.channel.pipeline().get("compress") instanceof CompressionEncoder) {
                  this.channel.pipeline().remove("compress");
              }
@@ -279,7 +280,7 @@
          }
  
      }
-@@ -660,7 +790,28 @@
+@@ -660,7 +791,28 @@
                      });
  
                      packetlistener1.onDisconnect(disconnectiondetails);

paper-server/patches/sources/net/minecraft/server/network/ServerConnectionListener.java.patch

@@ -66,7 +66,7 @@
              this.channels.add(((ServerBootstrap) ((ServerBootstrap) (new ServerBootstrap()).channel(oclass)).childHandler(new ChannelInitializer<Channel>() {
                  protected void initChannel(Channel channel) {
                      try {
-@@ -100,16 +126,51 @@
+@@ -100,16 +126,58 @@
  
                      Connection.configureSerialization(channelpipeline, PacketFlow.SERVERBOUND, false, (BandwidthDebugMonitor) null);
                      int j = ServerConnectionListener.this.server.getRateLimitPacketsPerSecond();
@@ -90,6 +90,13 @@
 +
 +                                        Connection connection = (Connection) channel.pipeline().get("packet_handler");
 +                                        connection.address = socketaddr;
++
++                                        // Paper start - Add API to get player's proxy address
++                                        final String proxyAddress = message.destinationAddress();
++                                        final int proxyPort = message.destinationPort();
++
++                                        connection.haProxyAddress = new java.net.InetSocketAddress(proxyAddress, proxyPort);
++                                        // Paper end - Add API to get player's proxy address
 +                                    }
 +                                } else {
 +                                    super.channelRead(ctx, msg);
@@ -121,7 +128,7 @@
      public SocketAddress startMemoryChannel() {
          List list = this.channels;
          ChannelFuture channelfuture;
-@@ -153,6 +214,14 @@
+@@ -153,6 +221,14 @@
          List list = this.connections;
  
          synchronized (this.connections) {
@@ -136,7 +143,7 @@
              Iterator<Connection> iterator = this.connections.iterator();
  
              while (iterator.hasNext()) {
-@@ -176,6 +245,10 @@
+@@ -176,6 +252,10 @@
                              networkmanager.setReadOnly();
                          }
                      } else {

paper-server/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java

@@ -270,7 +270,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
 
     @Override
     public InetSocketAddress getAddress() {
-        if (this.getHandle().connection.protocol() == null) return null;
+        if (this.getHandle().connection == null) return null;
 
         SocketAddress addr = this.getHandle().connection.getRemoteAddress();
         if (addr instanceof InetSocketAddress) {
@@ -280,6 +280,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         }
     }
 
+    // Paper start - Add API to get player's proxy address
+    @Override
+    public @Nullable InetSocketAddress getHAProxyAddress() {
+        if (this.getHandle().connection == null) return null;
+
+        return this.getHandle().connection.connection.haProxyAddress instanceof final InetSocketAddress inetSocketAddress ? inetSocketAddress : null;
+    }
+    // Paper end - Add API to get player's proxy address
+
     public interface TransferCookieConnection {
 
         boolean isTransferred();