From 1bf753e773ff009258fa59a94c19cfcb90ec7dd9 Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Sat, 1 Apr 2023 17:49:58 +0100
Subject: [PATCH] Fix confusing message on TLS certificate verification.

Closes #2746. Thanks to Akos Vandra-Meyer.
---
 ChangeLog.txt     | 1 +
 lib/packet_mosq.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index 2d19f52c3a..58efc1a72b 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -15,6 +15,7 @@ Client library:
 
 Clients:
 - Fix incorrect topic-alias property value in mosquitto_sub json output.
+- Fix confusing message on TLS certificate verification. Closes #2746.
 
 
 2.0.15 - 2022-08-16
diff --git a/lib/packet_mosq.c b/lib/packet_mosq.c
index 80f47168e6..da2a608016 100644
--- a/lib/packet_mosq.c
+++ b/lib/packet_mosq.c
@@ -268,6 +268,8 @@ int packet__write(struct mosquitto *mosq)
 							return MOSQ_ERR_CONN_LOST;
 						case COMPAT_EINTR:
 							return MOSQ_ERR_SUCCESS;
+						case EPROTO:
+							return MOSQ_ERR_TLS;
 						default:
 							return MOSQ_ERR_ERRNO;
 					}