From 2c51ac1c277b691658f57605d83664731fc77170 Mon Sep 17 00:00:00 2001
From: neil <gitsrc@neilpang.com>
Date: Sun, 12 Jul 2026 12:45:10 +0800
Subject: [PATCH] dns_dynu: include the server response in the authentication
 error

Same as the dns_cloudns change: a bare "Authentication failed" hides
the actual API error and makes reports undiagnosable.
---
 dnsapi/dns_dynu.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dnsapi/dns_dynu.sh b/dnsapi/dns_dynu.sh
index 1d1fc311..612756c5 100644
--- a/dnsapi/dns_dynu.sh
+++ b/dnsapi/dns_dynu.sh
@@ -214,11 +214,11 @@ _dynu_authentication() {
 
   response="$(_get "$Dynu_EndPoint/oauth2/token")"
   if [ "$?" != "0" ]; then
-    _err "Authentication failed."
+    _err "Authentication failed: no response from $Dynu_EndPoint/oauth2/token"
     return 1
   fi
   if _contains "$response" "Authentication Exception"; then
-    _err "Authentication failed."
+    _err "Authentication failed. Server response: $response"
     return 1
   fi
   if _contains "$response" "access_token"; then