package frontend import ( "fmt" "html/template" "net/http" ) func notifyClient(w http.ResponseWriter, message string, status int) { h := w.Header() h.Del("Content-Length") h.Set("Content-Type", "text/html; charset=utf-8") if status >= 400 { h.Set("X-Content-Type-Options", "nosniff") } w.WriteHeader(status) safeMsg := template.HTMLEscapeString(message) fmt.Fprintf(w, `%s`, safeMsg) }