Better bad password prompt?

[steve at thupdi.net (Steve)]

AnyConnect iOS client, input wrong password when connect will lead to
"unexpected error" after a long time(5-8s) other than reprompt user
credential input.

Another question is how to bring back XML auth, no matter set true or
false of cisco-client-compat, iOS or Mac client doesn't let user input
username and password at same time.

Thanks.
Steve