From 70f4cad2ca9ed671c3a3d55a53913d8aed49871b Mon Sep 17 00:00:00 2001
From: Markus Hoffrogge <mhoffrogge@gmail.com>
Date: Tue, 7 Mar 2023 13:22:46 +0100
Subject: [PATCH] Fix Retry-After handling

- closes #4543
---
 acme.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/acme.sh b/acme.sh
index 5d73cdb6..b7d9129d 100755
--- a/acme.sh
+++ b/acme.sh
@@ -2229,8 +2229,8 @@ _send_signed_request() {
         _debug3 _body "$_body"
       fi
 
-      _retryafter=$(echo "$responseHeaders" | grep -i "^Retry-After *:" | cut -d : -f 2 | tr -d ' ' | tr -d '\r')
-      if [ "$code" = '503' ] || [ "$_retryafter" ]; then
+      _retryafter=$(echo "$responseHeaders" | grep -i "^Retry-After *: *[0-9]\+ *" | cut -d : -f 2 | tr -d ' ' | tr -d '\r')
+      if [ "$code" = '503' ]; then
         _sleep_overload_retry_sec=$_retryafter
         if [ -z "$_sleep_overload_retry_sec" ]; then
           _sleep_overload_retry_sec=5