From 41fe5210841ae89a78becdad5bffb34ed17951dc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=B2=88=E5=94=81?= <52o@qq52o.cn>
Date: Mon, 6 Mar 2023 17:30:11 +0800
Subject: [PATCH] Fix duplicate content-type definition (#5481)

---
 src/http-server/src/CoreMiddleware.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/http-server/src/CoreMiddleware.php b/src/http-server/src/CoreMiddleware.php
index 4202f49a0..3f3335f72 100644
--- a/src/http-server/src/CoreMiddleware.php
+++ b/src/http-server/src/CoreMiddleware.php
@@ -200,7 +200,11 @@ class CoreMiddleware implements CoreMiddlewareInterface
                 ->withBody(new SwooleStream((string) $response));
         }
 
-        return $this->response()->withAddedHeader('content-type', 'text/plain')->withBody(new SwooleStream((string) $response));
+        if ($this->response()->hasHeader('content-type')) {
+            return $this->response()->withBody(new SwooleStream((string) $response));
+        }
+
+        return $this->response()->withHeader('content-type', 'text/plain')->withBody(new SwooleStream((string) $response));
     }
 
     /**