@Override
    public synchronized void write(final byte[] b, int off, final int len) throws IOException {
        if (len > 0xFFFF) {
            throw new IOException("write too large: " + len);
        }
        if (off < 4) {
            throw new IOException("NetBIOS socket output buffer requires 4 bytes available before off");
        }

        off -= 4;

        b[off + 0] = (byte) SessionServicePacket.SESSION_MESSAGE;

            result = len > used ? used : len;
            if (used > i && result > i) {
                System.arraycopy(pipe_buf, beg_idx, b, off, i);
                off += i;
                System.arraycopy(pipe_buf, 0, b, off, result - i);
            } else {
                System.arraycopy(pipe_buf, beg_idx, b, off, result);
            }
            used -= result;
            beg_idx = (beg_idx + result) % pipe_buf.length;
        }

                    request.setData(b, off, w);
                    final Smb2WriteResponse resp = th.send(request, RequestParam.NO_RETRY);
                    cnt = resp.getCount();
                } else {
                    final SmbComWriteAndX request =
                            new SmbComWriteAndX(th.getConfig(), fh.getFid(), this.fp, len - w - off, b, off, w, null);

    byte[] b;
    int off, dataCompactionMode, dataLength, dataOffset;

    SmbComReadAndXResponse() {
    }

    SmbComReadAndXResponse(final byte[] b, final int off) {
        this.b = b;
        this.off = off;
    }

    void setParam(final byte[] b, final int off) {
        this.b = b;
        this.off = off;
    }

    @Override

     */

    @Override
    public int read(final byte[] b, final int off, final int len) throws IOException {
        return readDirect(b, off, len);
    }

    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     *
     * @param b the buffer into which the data is read
     * @param off the start offset in the array b at which the data is written

        int state, t, x, i, off;
        byte ch;
        final byte[] type = new byte[128];
        final byte[] buf = new byte[16];
        final byte[] ext = extension.toLowerCase().getBytes("ASCII");

        state = ST_START;
        t = x = i = 0;
        for (off = 0; off < inLen; off++) {
            ch = in[off];
            switch (state) {
            case ST_START:

                if (off + stub_frag_len > stub.length) {
                    // shouldn't happen if alloc_hint is correct or greater
                    final byte[] tmp = new byte[off + stub_frag_len];
                    System.arraycopy(stub, 0, tmp, 0, off);
                    stub = tmp;
                }

                System.arraycopy(frag, 24, stub, off, stub_frag_len);

        }

        while (off < length) {
            final int r = this.handle.recv(buf, off, length - off);
            if (r == 0) {
                throw new IOException("Unexpected EOF");
            }
            off += r;
        }
        return off;
    }

    @Override
    public void close() throws IOException {
        super.close();
        try {
            this.handle.close();

        assertEquals(expected, len);

        int off = 0;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0x12345678, SMBUtil.readInt4(buf, off));
        off += 4;
        assertEquals(blob.length, SMBUtil.readInt2(buf, off));

    public int read(final byte[] b, final int off, final int len) throws IOException {
        return readDirect(b, off, len);
    }

    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     * Optimized for better performance with larger read sizes and reduced round trips.
     *
     * @param b the buffer to read into
     * @param off the offset in the buffer to start writing