From c175e836a7b59e8a663e12d963453dc1844c5012 Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Thu, 5 Mar 2020 10:54:13 +0000
Subject: [PATCH] Print openssl error when unable to load server key.

---
 src/net.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/net.c b/src/net.c
index 8a8e3445..21060db6 100644
--- a/src/net.c
+++ b/src/net.c
@@ -527,6 +527,7 @@ int net__tls_load_verify(struct mosquitto__listener *listener)
 		rc = SSL_CTX_use_PrivateKey_file(listener->ssl_ctx, listener->keyfile, SSL_FILETYPE_PEM);
 		if(rc != 1){
 			log__printf(NULL, MOSQ_LOG_ERR, "Error: Unable to load server key file \"%s\". Check keyfile.", listener->keyfile);
+			net__print_ssl_error(NULL);
 #if !defined(OPENSSL_NO_ENGINE)
 			ENGINE_FINISH(engine);
 #endif