}

	if _, err := req.TLS.PeerCertificates[0].Verify(optsCopy); err != nil {
		return nil, false, err
	}
	if err := a.verifySubject(req.TLS.PeerCertificates[0].Subject); err != nil {
		return nil, false, err
	}
	return a.auth.AuthenticateRequest(req)
}

func (a *Verifier) verifySubject(subject pkix.Name) error {
	// No CN restrictions
	if len(a.allowedCommonNames.Value()) == 0 {
		return nil
	}