do {
            r = len > readSize ? readSize : len;
            file.send(new SmbComReadAndX(file.fid, fp, r, null), response);
            n = response.dataLength;
            if (n <= 0) {
                return (int) (fp - start > 0L ? fp - start : -1);
            }
            fp += n;
            len -= n;
            response.off += n;
        } while (len > 0 && n == r);

        public byte[] initSecContext(byte[] token, int off, int len) throws CIFSException {
            if (token == null) {
                if (len == 0) {
                    return new byte[0];
                }
                throw new CIFSException("token is null but len > 0");
            }
            if (off < 0 || len < 0 || off > token.length || off + len > token.length) {

            byte[] buffer = new byte[200];
            int bufferIndex = testCase[0];
            int len = testCase[1];

            // Act
            int result = response.readSetupWireFormat(buffer, bufferIndex, len);

            // Assert
            assertEquals(0, result, "Failed for bufferIndex=" + bufferIndex + ", len=" + len);
        }
    }

    @Test
    @DisplayName("readParametersWireFormat should return 0")

        final int len = super.decode(buffer, bufferIndex);
        if (this.byteCount == 0) {
            // otherwise hasMore may not be correctly set
            readBytesWireFormat(buffer, len + bufferIndex);
        }
        nextElement();
        return len;
    }

    @Override

    @Override
    public void write(final byte b[], int off, int len) throws SmbException {
        if (len <= 0) {
            return;
        }

        // ensure file is open
        try (SmbFileHandleImpl fh = ensureOpen(); SmbTreeHandleImpl th = fh.getTree()) {
            int w;
            do {
                w = len > this.writeSize ? this.writeSize : len;
                long cnt;

            }

            int w;
            do {
                final int blockSize = this.file.getType() == SmbConstants.TYPE_FILESYSTEM ? this.writeSizeFile : this.writeSize;
                w = len > blockSize ? blockSize : len;

                if (this.smb2) {

    }

    private static SpnegoToken getToken(final byte[] token, final int off, final int len) throws SpnegoException {
        byte[] b = new byte[len];
        if (off == 0 && token.length == len) {
            b = token;
        } else {
            System.arraycopy(token, off, b, 0, len);
        }
        return getToken(b);
    }

    }

    /**
     * Reads up to len bytes of data from this input stream into an array of bytes.
     *
     * @throws IOException
     *             if a network error occurs
     */

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

    /**

        if (len <= 0) {
            return;
        }

        if (tmp == null) {
            throw new IOException("Bad file descriptor");
        }
        ensureOpen();

        if (LogStream.level >= 4) {
            SmbFile.log.println("write: fid=" + file.fid + ",off=" + off + ",len=" + len);
        }

        int w;

        align(4);
        int i = index;
        final int len = s.length();
        Encdec.enc_uint32le(len + 1, buf, i);
        i += 4;
        Encdec.enc_uint32le(0, buf, i);
        i += 4;
        Encdec.enc_uint32le(len + 1, buf, i);
        i += 4;
        try {
            System.arraycopy(s.getBytes("UTF-16LE"), 0, buf, i, len * 2);
        } catch (final UnsupportedEncodingException uee) {}