0033-Fix-some-forge-plugin-message-packets-not-being-forw.patch

From 31f57df948a2fecc483cef4359d77e7c7e5e493d Mon Sep 17 00:00:00 2001
From: Daniel Naylor <git@drnaylor.co.uk>
Date: Mon, 17 Jul 2017 20:24:17 +0100
Subject: [PATCH] Fix some forge plugin message packets not being forwarded
 correctly

This fixes #155, see SpongePowered/SpongeForge#1507

diff --git a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
index 52429265..5e02f8c8 100644
--- a/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
+++ b/proxy/src/main/java/net/md_5/bungee/forge/ForgeClientHandshakeState.java
@@ -171,7 +171,8 @@ enum ForgeClientHandshakeState implements IForgeClientPacketHandler<ForgeClientH
         public ForgeClientHandshakeState handle(PluginMessage message, UserConnection con)
         {
             // Ack.
-            if ( message.getData()[0] == -1 )
+            if (( message.getTag().equals( ForgeConstants.FML_HANDSHAKE_TAG ) && message.getData()[0] == -1 )
+                    || message.getTag().equals( ForgeConstants.FORGE_REGISTER ))
             {
                 ForgeLogger.logClient( ForgeLogger.LogDirection.RECEIVED, this.name(), message );
                 con.unsafe().sendPacket( message );
@@ -187,7 +188,7 @@ enum ForgeClientHandshakeState implements IForgeClientPacketHandler<ForgeClientH
         }
     },
     /**
-     * Handshake has been completed. Ignores any future handshake packets.
+     * Handshake has been completed. Ignores any future handshake packets, but not any FORGE packets.
      */
     DONE
     {
@@ -196,6 +197,11 @@ enum ForgeClientHandshakeState implements IForgeClientPacketHandler<ForgeClientH
         public ForgeClientHandshakeState handle(PluginMessage message, UserConnection con)
         {
             ForgeLogger.logClient( ForgeLogger.LogDirection.RECEIVED, this.name(), message );
+            if ( message.getTag().equals( ForgeConstants.FORGE_REGISTER ))
+            {
+                con.unsafe().sendPacket( message );
+            }
+
             return this;
         }
 
diff --git a/proxy/src/main/java/net/md_5/bungee/forge/ForgeServerHandler.java b/proxy/src/main/java/net/md_5/bungee/forge/ForgeServerHandler.java
index 77d18e6d..d254b84e 100644
--- a/proxy/src/main/java/net/md_5/bungee/forge/ForgeServerHandler.java
+++ b/proxy/src/main/java/net/md_5/bungee/forge/ForgeServerHandler.java
@@ -50,7 +50,7 @@ public class ForgeServerHandler
         ForgeServerHandshakeState prevState = state;
         packetQueue.add( message );
         state = state.send( message, con );
-        if ( state != prevState ) // send packets
+        if ( state == ForgeServerHandshakeState.DONE || state != prevState ) // send packets
         {
             synchronized ( packetQueue )
             {
-- 
2.42.0