Unity Login WWW Classe

// From http://blogs.floriancavallo.fr/post/2012/07/17/Unity-Creer-une-interface-de-Login.aspx

private void makeLogin(string username,string password)
    {

       WWWForm form = new WWWForm();

        form.AddField("login", username);
        form.AddField("password", password);

        //WWW www = new WWW("http://monserveur.fr/connexion.php", form);
        WWW www = new WWW("http://monserveur.fr/connexion.php?login="+username+"&password="+password);


        //Ici on lance le login en Asynchrone
        StartCoroutine(WaitForRequest(www));
    }

private IEnumerator WaitForRequest(WWW www)
    {
        yield return www;

        if (www.error == null)
        {
            if(www.text == "connexionOk"){
                Application.LoadLevel(1);
            }
        }
        else
        {
            Debug.Log("WWW Error: " + www.error);
        }
    }