From 3036d789f5b1817bf18f0f39ab35294147de077a Mon Sep 17 00:00:00 2001
From: zk <zhangkang0911@gmail.com>
Date: Tue, 25 Nov 2025 17:39:51 +0800
Subject: [PATCH] p.PubrelProperties.Unpack(b) EOF

When `RemainingLength=3`, calling `p.PubrelProperties.Unpack(b)` results in an EOF error.
---
 pkg/mqtt/codec/v5/pubrel.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkg/mqtt/codec/v5/pubrel.go b/pkg/mqtt/codec/v5/pubrel.go
index e016e0b..7e07acf 100644
--- a/pkg/mqtt/codec/v5/pubrel.go
+++ b/pkg/mqtt/codec/v5/pubrel.go
@@ -66,6 +66,8 @@ func (p *PubrelPacket) Unpack(b io.Reader) (err error) {
 		if err != nil {
 			return err
 		}
+	}
+	if p.RemainingLength > 3 {
 		err = p.PubrelProperties.Unpack(b)
 		if err != nil {
 			return err