Magnus Hagander <magnus@hagander.net> writes:
> But that will still fail if the user has set it up to require a client
> certificate.
But not till it gets to the pg_hba checks. We might need to have some
variant on PQrequiresPassword to detect that failure type, but we'll
already know what we need to.
This still points up the value of adding an actual "ping" interface to
the protocol, though.
regards, tom lane