From cb8b341fb4ded4c993c812b40441d3978eb73b0f Mon Sep 17 00:00:00 2001
From: neilpang <github@neilpang.com>
Date: Thu, 2 Mar 2023 18:10:38 +0800
Subject: [PATCH] fix https://github.com/acmesh-official/acme.sh/issues/4530

---
 acme.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/acme.sh b/acme.sh
index a6f3b905..f5f403ce 100755
--- a/acme.sh
+++ b/acme.sh
@@ -2229,8 +2229,8 @@ _send_signed_request() {
         _debug3 _body "$_body"
       fi
 
-      if [ "$code" = '503' ]; then
-        _retryafter=$(echo "$responseHeaders" | grep -i "^Retry-After *:" | cut -d : -f 2 | tr -d ' ' | tr -d '\r')
+      _retryafter=$(echo "$responseHeaders" | grep -i "^Retry-After *:" | cut -d : -f 2 | tr -d ' ' | tr -d '\r')
+      if [ "$code" = '503' ] || [ "$_retryafter" ]; then
         _sleep_overload_retry_sec=$_retryafter
         if [ -z "$_sleep_overload_retry_sec" ]; then
           _sleep_overload_retry_sec=5