From aae151e3d945a4d57fa62cd238a50fef344b3a69 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Sun, 12 Apr 2020 17:20:38 -0400
Subject: [PATCH] No need to register multiple times

---
 .../proxy/connection/MinecraftConnection.java             | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
index dc1151fe8..84ceaeb75 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/MinecraftConnection.java
@@ -169,11 +169,15 @@ public class MinecraftConnection extends ChannelInboundHandlerAdapter {
   }
 
   private void installDiscardHandler(ChannelHandlerContext ctx) {
-    ctx.pipeline().addBefore(MINECRAFT_DECODER, "discard", DiscardHandler.HANDLER);
+    if (ctx.pipeline().get("discard") == null) {
+      ctx.pipeline().addBefore(MINECRAFT_DECODER, "discard", DiscardHandler.HANDLER);
+    }
   }
 
   private void installDiscardHandler() {
-    channel.pipeline().addBefore(MINECRAFT_DECODER, "discard", DiscardHandler.HANDLER);
+    if (channel.pipeline().get("discard") == null) {
+      channel.pipeline().addBefore(MINECRAFT_DECODER, "discard", DiscardHandler.HANDLER);
+    }
   }
 
   public EventLoop eventLoop() {