assertNotNull(request.getCapabilities());
        assertNotNull(request.getDialects());
        assertNotNull(request.getClientGuid());
        assertNotNull(request.getNegotiateContexts());
        assertNotNull(request.getPreauthSalt());

        // Verify data integrity
        assertEquals(16, request.getClientGuid().length);
        assertEquals(32, request.getPreauthSalt().length);
        assertTrue(request.getDialects().length > 0);

    public int[] getDialects() {
        return this.dialects;
    }

    /**
     * Gets the client GUID used for identification.
     *
     * @return the clientGuid
     */
    public byte[] getClientGuid() {
        return this.clientGuid;
    }

    /**
     * Gets the negotiate contexts for SMB 3.1.1 negotiation.
     *
     * @return the negotiateContexts
     */

        req.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
        req.setInputData(new ValidateNegotiateInfoRequest(negoReq.getCapabilities(), negoReq.getClientGuid(),
                (short) negoReq.getSecurityMode(), negoReq.getDialects()));

        Smb2IoctlResponse resp;
        try {
            resp = send(req, RequestParam.NO_RETRY);