Render 404 instead of redirecting to it

Author: alufers

main.go

@@ -58,18 +58,26 @@ func main() {
 		w.Write(data)
 	})
 
+	// Helper to serve 404 page
+	serve404 := func(w http.ResponseWriter) {
+		data, _ := content.ReadFile("404.html")
+		w.Header().Set("Content-Type", "text/html; charset=utf-8")
+		w.WriteHeader(http.StatusNotFound)
+		w.Write(data)
+	}
+
 	// Serve generic error pages
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		path := strings.TrimPrefix(r.URL.Path, "/")
 		if path == "" {
 			// Default to 404
-			http.Redirect(w, r, "/404", http.StatusFound)
+			serve404(w)
 			return
 		}
 
 		code, err := strconv.Atoi(path)
 		if err != nil || code < 100 || code > 599 {
-			http.Redirect(w, r, "/404", http.StatusFound)
+			serve404(w)
 			return
 		}