From e011f1d783f9834e0ee43e5439351c020bbabe05 Mon Sep 17 00:00:00 2001
From: Andrew Steinborn <git@steinborn.me>
Date: Tue, 28 Jul 2020 16:53:15 -0400
Subject: [PATCH] Add missing allowed check to 1.0.x. Fixes #335

---
 .../proxy/connection/client/ClientPlaySessionHandler.java  | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
index 0e6dbe729..f583d76a5 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/connection/client/ClientPlaySessionHandler.java
@@ -230,8 +230,11 @@ public class ClientPlaySessionHandler implements MinecraftSessionHandler {
             } else {
               PluginMessageEvent event = new PluginMessageEvent(player, serverConn, id,
                   packet.getData());
-              server.getEventManager().fire(event).thenAcceptAsync(pme -> backendConn.write(packet),
-                  backendConn.eventLoop());
+              server.getEventManager().fire(event).thenAcceptAsync(pme -> {
+                if (pme.getResult().isAllowed()) {
+                  backendConn.write(packet);
+                }
+              }, backendConn.eventLoop());
             }
           }
         }