From f6fb33955b63bdf17431e5cfafe51408b19a1141 Mon Sep 17 00:00:00 2001
From: andyexeter <palmer.andy@gmail.com>
Date: Mon, 12 Oct 2020 17:51:22 +0100
Subject: [PATCH] Use Retry-After header as value to sleep for before retrying
 request

---
 lib/CurlRequest.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/CurlRequest.php b/lib/CurlRequest.php
index 73567e1..25df584 100644
--- a/lib/CurlRequest.php
+++ b/lib/CurlRequest.php
@@ -166,7 +166,13 @@ protected static function processRequest($ch)
                 throw new ResourceRateLimitException($response->getBody());
             }
 
-            usleep(500000);
+            $retryAfter = $response->getHeader('Retry-After');
+
+            if ($retryAfter === null) {
+                break;
+            }
+
+            sleep((float)$retryAfter);
         }
 
         if (curl_errno($ch)) {