return this.handle.ensureTreeConnected();
    }


    @Override
    protected synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        return this.handle.ensureOpen();
    }


    /**
     * This stream class is unbuffered. Therefore this method will always
     * return 0 for streams connected to regular files. However, a

            }
            else {
                throw new IllegalArgumentException("Invalid mode");
            }

            try ( SmbFileHandle h = ensureOpen() ) {}
            this.readSize = th.getReceiveBufferSize() - 70;
            this.writeSize = th.getSendBufferSize() - 70;

            if ( th.hasCapability(SmbConstants.CAP_LARGE_READX) ) {

     * @throws CIFSException
     */
    public void open () throws CIFSException {
        try ( SmbFileHandleImpl fh = ensureOpen() ) {}
    }


    /**
     * @param file
     * @param openFlags
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        if ( this.handle == null || !this.handle.isValid() ) {

        return this.handle.ensureTreeConnected();
    }


    @Override
    protected synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        return this.handle.ensureOpen();
    }


    /**
     * @return the handle
     */
    protected SmbPipeHandleImpl getHandle () {
        return this.handle;
    }


    @Override

        this.access = access | SmbConstants.FILE_WRITE_DATA;

        try ( SmbTreeHandleImpl th = file.ensureTreeConnected() ) {
            this.smb2 = th.isSMB2();
            try ( SmbFileHandleImpl fh = ensureOpen() ) {
                if ( append ) {
                    this.fp = fh.getInitialSize();
                }
                init(th);
                if ( !append && this.smb2 ) {

     * @throws CIFSException
     */
    SmbTreeHandleInternal ensureTreeConnected () throws CIFSException;


    /**
     * @return file handle
     * @throws CIFSException
     */
    SmbFileHandle ensureOpen () throws CIFSException;


    /**
     * @param buf
     * @param off
     * @param length
     * @param direct
     * @return received bytes
     * @throws CIFSException
     * @throws IOException

     */
    @Override
    public boolean isStale () {
        return !this.open || ( this.handle != null && !this.handle.isValid() );
    }


    @Override
    public synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        if ( !this.open ) {
            throw new SmbException("Pipe handle already closed");
        }

        if ( !isOpen() ) {

        } else if(( pipe.pipeType & SmbNamedPipe.PIPE_TYPE_TRANSACT ) ==
                                                    SmbNamedPipe.PIPE_TYPE_TRANSACT ) {
            ensureOpen();
            TransTransactNamedPipe req = new TransTransactNamedPipe( pipe.fid, b, off, len );
            if (dcePipe) {
                req.maxDataCount = 1024;
            }

 */

    public void write( byte[] b ) throws IOException {
        write( b, 0, b.length );
    }

    public boolean isOpen()
    {
        return file.isOpen();
    }
    void ensureOpen() throws IOException {
        // ensure file is open
        if( file.isOpen() == false ) {
            file.open( openFlags, access | SmbConstants.FILE_WRITE_DATA, SmbFile.ATTR_NORMAL, 0 );
            if( append ) {

        }
    }

    int getNextNameTrnId() {
        if(( ++nextNameTrnId & 0xFFFF ) == 0 ) {
            nextNameTrnId = 1;
        }
        return nextNameTrnId;
    }
    void ensureOpen( int timeout ) throws IOException {
        closeTimeout = 0;
        if( SO_TIMEOUT != 0 ) {
            closeTimeout = Math.max( SO_TIMEOUT, timeout );
        }