From 14fd71e82290d4f5bf49ff3a52379f91a54a8a39 Mon Sep 17 00:00:00 2001
From: Franck DAKIA <dakiafranck@gmail.com>
Date: Sun, 5 Nov 2023 15:09:07 +0000
Subject: [PATCH] Fix duplicate headers

---
 src/Http/Client/HttpClient.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Http/Client/HttpClient.php b/src/Http/Client/HttpClient.php
index 6a3945bc..9c94f437 100644
--- a/src/Http/Client/HttpClient.php
+++ b/src/Http/Client/HttpClient.php
@@ -187,7 +187,9 @@ public function addAttach(string|array $attach): HttpClient
     public function addHeaders(array $headers): HttpClient
     {
         foreach ($headers as $key => $value) {
-            $this->headers[] = $key . ': ' . $value;
+            if (!in_array(strtolower($key . ': ' . $value), array_map('strtolower', $this->headers))) {
+                $this->headers[] = $key . ': ' . $value;
+            }
         }
 
         return $this;