}

    @Override
    public boolean isFailed() {
        final Socket s = this.socket;
        return super.isFailed() || s == null || s.isClosed();
    }

    @Override
    public boolean hasCapability(final int cap) throws SmbException {
        return getNegotiateResponse().haveCapabilitiy(cap);
    }

    /**
     * @return the negotiated
     * @throws SmbException
     */

        boolean anonymous = this.credentials.isAnonymous();
        do {
            switch (state) {
            case 10: /* NTLM */

                if (trans.hasCapability(SmbConstants.CAP_EXTENDED_SECURITY)) {
                    log.debug("Extended security negotiated");
                    state = 20; /* NTLMSSP */
                    break;
                }