From a7e7d3f9a6852872bd5ed336a22573564174276f Mon Sep 17 00:00:00 2001
From: zivillian <devel@zivillian.de>
Date: Wed, 6 Jul 2022 16:13:18 +0200
Subject: [PATCH] prevent upload without file

---
 src/pages.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pages.cpp b/src/pages.cpp
index 4763099..b3168e1 100644
--- a/src/pages.cpp
+++ b/src/pages.cpp
@@ -277,7 +277,7 @@ void setupPages(AsyncWebServer *server, ModbusClientRTU *rtu, ModbusBridgeWiFi *
     auto *response = request->beginResponseStream("text/html");
     sendResponseHeader(response, "Firmware Update");
     response->print("<form method=\"post\" enctype=\"multipart/form-data\">"
-      "<input type=\"file\" name=\"file\" id=\"file\"/>"
+      "<input type=\"file\" name=\"file\" id=\"file\" required/>"
       "<p></p>"
       "<button class=\"r\">Upload</button>"
       "</form>"