prop2.setProperty("jcifs.smb.client.maxVersion", "SMB302");
        prop2.setProperty("jcifs.smb.client.minVersion", "SMB311");
        PropertyConfiguration p2 = new PropertyConfiguration(prop2);
        assertEquals(DialectVersion.SMB311, p2.getMinimumVersion());
        assertEquals(DialectVersion.SMB311, p2.getMaximumVersion());

        Properties prop3 = new Properties();

    /**
     * SMB 3.0.2 - Windows 8.1/Server 2012R2
     */
    SMB302(Smb2Constants.SMB2_DIALECT_0302),

    /**
     * SMB 3.1.1 - Windows 10/Server 2016
     */
    SMB311(Smb2Constants.SMB2_DIALECT_0311);

    private final boolean smb2;
    private final int dialect;


    /**
     * 
     */
    private DialectVersion () {
        this.smb2 = false;

        }

        List<NegotiateContextRequest> negoContexts = new LinkedList<>();
        if ( config.getMaximumVersion() != null && config.getMaximumVersion().atLeast(DialectVersion.SMB311) ) {
            byte[] salt = new byte[32];
            config.getRandom().nextBytes(salt);
            negoContexts.add(new PreauthIntegrityNegotiateContext(config, new int[] {

            @Override
            public Map<String, String> mutate ( Map<String, String> cfg ) {
                cfg.put("jcifs.smb.client.minVersion", "SMB311");
                cfg.put("jcifs.smb.client.maxVersion", "SMB311");
                return cfg;
            }
        });
    }


    /**
     * @throws CIFSException
     */
    @AfterClass

            int reqLen = negotiateWrite(smb2neg, first != null);
            boolean doPreauth = getContext().getConfig().getMaximumVersion().atLeast(DialectVersion.SMB311);
            if ( doPreauth ) {
                negoReqBuffer = new byte[reqLen];
                System.arraycopy(this.sbuf, 4, negoReqBuffer, 0, reqLen);
            }

            negotiatePeek();

            this.supportsEncryption = tc.getConfig().isEncryptionEnabled();
        }

        if ( this.selectedDialect.atLeast(DialectVersion.SMB311) ) {
            if ( !checkNegotiateContexts(r, this.commonCapabilities) ) {
                return false;
            }
        }

        int maxBufferSize = tc.getConfig().getTransactionBufferSize();

            return;
        }

        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;
        }

        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() ) {