From 3ce27eefba37b4d8a64973c3adeed2de92e6fc42 Mon Sep 17 00:00:00 2001
From: wangqi <1015350043@qq.com>
Date: Wed, 9 Mar 2022 20:42:03 +0800
Subject: [PATCH] add cache for charset

---
 lib/request.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/request.js b/lib/request.js
index 71d2779c7..f2f065b4f 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -365,9 +365,11 @@ module.exports = {
    */
 
   get charset () {
+    if (this._charsetcache) return this._charsetcache
     try {
       const { parameters } = contentType.parse(this.req)
-      return parameters.charset || ''
+      const charset = this._charsetcache = parameters.charset || ''
+      return charset
     } catch (e) {
       return ''
     }