From b15701dd7caabfb0d94839929a2b8280e0eb6403 Mon Sep 17 00:00:00 2001
From: relsoul <relsoul@outlook.com>
Date: Mon, 12 Jun 2023 16:49:06 +0800
Subject: [PATCH] Fix file exists but file name does not exist

---
 lib/make-middleware.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/make-middleware.js b/lib/make-middleware.js
index b033cbd9..12a90a51 100644
--- a/lib/make-middleware.js
+++ b/lib/make-middleware.js
@@ -96,7 +96,15 @@ function makeMiddleware (setup) {
     // handle files
     busboy.on('file', function (fieldname, fileStream, filename, encoding, mimetype) {
       // don't attach to the files object, if there is no file
-      if (!filename) return fileStream.resume()
+      if (!filename) {
+        // @link https://github.com/mscdex/busboy/blob/master/lib/types/multipart.js
+        // If the type is 'application/octet-stream', it is also identified as a file 
+        if(mimetype==='application/octet-stream'){
+          filename = 'unknownFile'
+        }else{
+          return fileStream.resume()
+        }
+      }
 
       // Work around bug in Busboy (https://github.com/mscdex/busboy/issues/6)
       if (limits && Object.prototype.hasOwnProperty.call(limits, 'fieldNameSize')) {