*/
    @Test
    @DisplayName("Pre-auth integrity hash should be thread-safe")
    void testPreauthHashThreadSafety() throws Exception {
        // Setup SMB3.1.1 negotiation
        when(negotiateResponse.getSelectedDialect()).thenReturn(DialectVersion.SMB311);
        when(negotiateResponse.getSelectedPreauthHash()).thenReturn(1); // SHA-512
        setPrivateField(transport, "smb2", true);

    public boolean isSMB3() {
        try (SmbSessionImpl session = this.treeConnection.getSession(); SmbTransportImpl transport = session.getTransport()) {
            return transport.isSMB2() && transport.getNegotiateResponse().getSelectedDialect().atLeast(jcifs.DialectVersion.SMB300);
        } catch (final SmbException e) {
            log.debug("Failed to connect for determining SMB3 support", e);
            return false;
        }
    }

            log.debug("Secure negotiation does not apply");
            return;
        }

        final Smb2NegotiateResponse nego = (Smb2NegotiateResponse) trans.getNegotiateResponse();
        if (nego.getSelectedDialect().atLeast(DialectVersion.SMB311)) {
            // have preauth integrity instead
            log.debug("Secure negotiation does not apply, is SMB3.1");
            return;
        }

        }

        /* Adjust negotiated values */
        this.tconHostName = this.address.getHostName();
        this.negotiated = resp.getResponse();
        if (resp.getResponse().getSelectedDialect().atLeast(DialectVersion.SMB311)) {
            updatePreauthHash(resp.getRequestRaw());
            updatePreauthHash(resp.getResponseRaw());
            if (log.isDebugEnabled()) {

     */
    public byte[] getServerGuid() {
        return this.serverGuid;
    }

    /**
     * @return the selectedDialect
     */
    @Override
    public DialectVersion getSelectedDialect() {
        return this.selectedDialect;
    }

    /**
     * Gets the encryption cipher selected for SMB3 encryption.
     *
     * @return the selectedCipher
     */

                        : Smb2Constants.SMB2_NEGOTIATE_SIGNING_ENABLED;
        boolean anonymous = this.credentials.isAnonymous();
        long sessId = 0;

        boolean preauthIntegrity = negoResp.getSelectedDialect().atLeast(DialectVersion.SMB311);
        this.preauthIntegrityHash = preauthIntegrity ? trans.getPreauthIntegrityHash() : null;

        if (this.preauthIntegrityHash != null && log.isDebugEnabled()) {