Add constants

main.go

@@ -14,7 +14,7 @@ func main() {
 	defer cancel() // cancel when we are finished consuming integers
 	go mdnsserver.Run(ctx)
 
-	http.HandleFunc("/", handle)
+	http.HandleFunc("/ipp/print", handle)
 
 	log.Info("http server started on :1234")
 	err := http.ListenAndServe(":1234", nil)
@@ -25,6 +25,10 @@ func main() {
 
 func handle(w http.ResponseWriter, r *http.Request) {
 	log.Infoln("handle")
+	if r.Method != "POST" {
+		http.Error(w, "Unsupported method", http.StatusMethodNotAllowed)
+
+	}
 	// Disable caching of this page
 
 	// Check if user is logged in, if not redirect to login page