From baf053bc8efee3577f26cf58fec261e28e18dff4 Mon Sep 17 00:00:00 2001
From: SupremeMortal <6178101+SupremeMortal@users.noreply.github.com>
Date: Wed, 24 Jul 2024 17:13:12 +0100
Subject: [PATCH] Reuse the same cookie until it expires

This fixes and issue where the client retries and fails because the cookie has been changed.
---
 .../handler/codec/raknet/server/RakServerOfflineHandler.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/transport-raknet/src/main/java/org/cloudburstmc/netty/handler/codec/raknet/server/RakServerOfflineHandler.java b/transport-raknet/src/main/java/org/cloudburstmc/netty/handler/codec/raknet/server/RakServerOfflineHandler.java
index 278b771..dd11561 100644
--- a/transport-raknet/src/main/java/org/cloudburstmc/netty/handler/codec/raknet/server/RakServerOfflineHandler.java
+++ b/transport-raknet/src/main/java/org/cloudburstmc/netty/handler/codec/raknet/server/RakServerOfflineHandler.java
@@ -183,7 +183,7 @@ private void onOpenConnectionRequest1(ChannelHandlerContext ctx, DatagramPacket
             cookie = 0;
         }
 
-        PendingConnection connection = this.pendingConnections.put(sender, new PendingConnection(protocolVersion, cookie));
+        PendingConnection connection = this.pendingConnections.putIfAbsent(sender, new PendingConnection(protocolVersion, cookie));
         if (connection != null && log.isTraceEnabled()) {
             log.trace("Received duplicate open connection request 1 from {}", sender);
         }