fix: Set content type for file downloads in viewer handler

lbeckman314 · lbeckman314 · commit 9073f99956d9 · 2025-11-13T15:53:28.000-08:00
diff --git a/internal/viewer/handlers.go b/internal/viewer/handlers.go
@@ -211,6 +211,9 @@ func (v *Viewer) fileHandler(w http.ResponseWriter, r *http.Request) {
 		filename = r.PathValue("filename")
 		ctx      = r.Context()
 	)
+
+	// Setting content type to application/octet-stream to support any files without extensions (e.g. Canvas files)
+	w.Header().Set("Content-Type", "application/octet-stream")
 	if id == "" || filename == "" || isInvalid(filename) || isInvalid(id) {
 		http.NotFound(w, r)
 		return
