return send(request, response, Collections.<RequestParam> emptySet());
    }

    <T extends CommonServerMessageBlockResponse> T send(CommonServerMessageBlockRequest request, T response, Set<RequestParam> params)
            throws CIFSException {
        // Select appropriate transport (multi-channel if available)

            Smb2ReadResponse smb2Resp = mock(Smb2ReadResponse.class);
            when(smb2Resp.getDataLength()).thenReturn(3);
            when(mockTree.send(any(Request.class), any(RequestParam.class))).thenAnswer(inv -> (CommonServerMessageBlockResponse) smb2Resp);

            byte[] buf = new byte[16];

            // Skip advances internal file pointer; next read should use this offset
            in.skip(2);

        when(peek.getReadDataAvailable()).thenReturn(7);
        when(ioResp.getOutputData()).thenReturn(peek);

        when(tree.send(any(Smb2IoctlRequest.class), eq(RequestParam.NO_RETRY))).thenReturn(ioResp);

        // Act
        int available = stream.available();

        // Assert
        assertEquals(7, available, "Should return available bytes reported by server");

                    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);
                    th.send(request, this.write_andx_resp, RequestParam.NO_RETRY);

            }

            if (log.isTraceEnabled()) {
                log.trace("Sending NtTransNotifyChange for " + this.handle);
            }
            try {
                resp = th.send(req, resp, RequestParam.NO_TIMEOUT, RequestParam.NO_RETRY);
            } catch (final SmbException e) {
                if (e.getNtStatus() == 0xC0000120) {
                    // cancelled
                    log.debug("Request was cancelled", e);

                req.setMaxOutputResponse(16);
                req.setFlags(Smb2IoctlRequest.SMB2_O_IOCTL_IS_FSCTL);
                final Smb2IoctlResponse resp = th.send(req, RequestParam.NO_RETRY);
                return ((SrvPipePeekResponse) resp.getOutputData()).getReadDataAvailable();
            }

                        request.setRemainingBytes(Math.min(len - r, 1024 * 1024)); // Hint up to 1MB for read-ahead

                        try {
                            final Smb2ReadResponse resp = th.send(request, RequestParam.NO_RETRY);
                            n = resp.getDataLength();
                        } catch (final SmbException e) {
                            if (e.getNtStatus() == 0xC0000011) { // NT_STATUS_END_OF_FILE

                req.setInputData(new ByteEncodable(buf, off, length));
                req.setMaxOutputResponse(maxRecvSize);
                final Smb2IoctlResponse resp = th.send(req, RequestParam.NO_RETRY);
                return resp.getOutputLength();
            }
            if (this.transact) {

                    final Smb2SetInfoRequest treq = new Smb2SetInfoRequest(th.getConfig(), fh.getFileId());
                    treq.setFileInformation(new FileEndOfFileInformation(0));
                    th.send(treq, RequestParam.NO_RETRY);
                }
            }
        } catch (final CIFSException e) {
            throw SmbException.wrap(e);
        }
    }

                        try {
                            final SrvCopyChunkCopyResponse r =
                                    dh.send(copy, RequestParam.NO_RETRY).getOutputData(SrvCopyChunkCopyResponse.class);
                            if (log.isDebugEnabled()) {