@DisplayName("LargeReadX splits count across maxCount/openTimeout")
        void largeReadXSetsRequestFields() throws Exception {
            when(mockTree.isSMB2()).thenReturn(false);
            when(mockTree.hasCapability(SmbConstants.CAP_LARGE_READX)).thenReturn(true);
            when(mockTree.areSignaturesActive()).thenReturn(false);
            when(mockConfig.getReceiveBufferSize()).thenReturn(0x200000); // large to allow big block size

        this.openFlags &= ~(SmbFile.O_CREAT | SmbFile.O_TRUNC); /* in case close and reopen */
        writeSize = file.tree.session.transport.snd_buf_size - 70;

        useNTSmbs = file.tree.session.transport.hasCapability(SmbConstants.CAP_NT_SMBS);
        if (useNTSmbs) {
            reqx = new SmbComWriteAndX();
            rspx = new SmbComWriteAndXResponse();
        } else {
            req = new SmbComWrite();

            this.readSizeFile = th.getReceiveBufferSize();
            return;
        }

        this.readSize = Math.min(th.getReceiveBufferSize() - 70, th.getMaximumBufferSize() - 70);

        if (th.hasCapability(SmbConstants.CAP_LARGE_READX)) {
            this.largeReadX = true;
            this.readSizeFile =

                                long timeout = config.getPersistentHandleTimeout();
                                boolean persistent =
                                        config.isUsePersistentHandles() && h.hasCapability(SmbConstants.CAP_PERSISTENT_HANDLES);
                                req.addDurableHandleV2Context(timeout, persistent);
                            }
                            persistentHandlesAdded = true;

        setField(transport, "negotiated", nego);
        when(nego.haveCapabilitiy(SmbConstants.CAP_DFS)).thenReturn(true);

        // Act & Assert
        assertTrue(transport.hasCapability(SmbConstants.CAP_DFS));
        verify(nego, times(1)).haveCapabilitiy(SmbConstants.CAP_DFS);
    }

    @Test
    @DisplayName("SMB version detection via flag or response type")

            // Ensure the transport is connected and ready
            transport.ensureConnected();

            // Verify multi-channel capability (SMB3+ required)
            if (!transport.isSMB2() || !transport.hasCapability(0x00000008)) { // SMB2_GLOBAL_CAP_MULTI_CHANNEL
                throw new CIFSException("Server does not support SMB multi-channel capability");
            }

                uid = 0;

                do {
                    switch (state) {
                    case 10: /* NTLM */
                        if (auth != NtlmPasswordAuthentication.ANONYMOUS && transport.hasCapability(SmbConstants.CAP_EXTENDED_SECURITY)) {
                            state = 20; /* NTLMSSP */
                            break;
                        }

        when(tree.getConfig()).thenReturn(cfg);
        when(tree.getReceiveBufferSize()).thenReturn(1024);
        when(tree.getSendBufferSize()).thenReturn(1024);
        when(tree.hasCapability(anyInt())).thenAnswer(inv -> ntSmbsCap && inv.getArgument(0).equals(SmbConstants.CAP_NT_SMBS));
        when(tree.areSignaturesActive()).thenReturn(false);
        when(tree.isSMB2()).thenReturn(smb2);

            log.println("open0: " + unc);
        }

        /*
         * NT Create AndX / Open AndX Request / Response
         */

        if (tree.session.transport.hasCapability(SmbConstants.CAP_NT_SMBS)) {
            final SmbComNTCreateAndXResponse response = new SmbComNTCreateAndXResponse();

        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;
                }