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
     */
    SmbNegotiationResponse getNegotiateResponse() throws SmbException {