From b117769ad9648240fbcf7500a8039ebe297aafe7 Mon Sep 17 00:00:00 2001
From: Marin Ivanov <dev@metala.org>
Date: Sun, 18 Jan 2026 21:38:23 +0200
Subject: fail fast on multipart parsing error

---
 main.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/main.go b/main.go
index 597726b..ac52a8b 100644
--- a/main.go
+++ b/main.go
@@ -190,7 +190,12 @@ func (s *Server) post(w http.ResponseWriter, r *http.Request) {
 	r.Body = http.MaxBytesReader(w, r.Body, s.maxSize) // impose maximum request size
 	mimeType := r.Header.Get("content-type")
 	if strings.HasPrefix(mimeType, "multipart/form-data;") {
-		r.ParseMultipartForm(1 << 23) // max 8MB in RAM
+		// max 8MB in RAM for multipart parsing
+		if err := r.ParseMultipartForm(1 << 23); err != nil {
+			log.Print("Error parse multipart form: ", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
 		textName, err := s.postText(r)
 		if err != nil {
 			log.Print("Error text upload: ", err)
-- 
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