[stunnel-users] Force PSK Authentication

Hi stunnel-users,

Is there a way to force PSK Authentication?

Current behavior is that if the client has no PSK Authentication configured, no authentication is performed and the connection proceeds even when the server has this configured:

ciphers = PSK PSKsecrets = mypsk.txt

Is this expected behavior? Is there a way to enforce PSK, in other words block clients without PSK Authentication?

Thanks