```mermaid
sequenceDiagram
    participant App
    participant Client

    App->>App: Produce Item 1
    App->>Client: Send Item 1
    App->>App: Produce Item 2
    Client->>Client: Process Item 1
    App->>Client: Send Item 2
    App->>App: Produce Item 3
    Client->>Client: Process Item 2
    App->>Client: Send Item 3
    Client->>Client: Process Item 3
    Note over App: Keeps producing...
    Note over Client: Keeps consuming...

    
    private void monitorRegistrations() {
        for (WitnessRegistration registration : registrations.values()) {
            if (registration.getState() == WitnessRegistrationState.REGISTERED) {
                // Send periodic heartbeat
                sendHeartbeat(registration);
            }
        }
    }
    
    private void sendHeartbeat(WitnessRegistration registration) {
        try {

                }
                file.send(reqx, rspx);
                fp += rspx.count;
                len -= rspx.count;
                off += rspx.count;
            } else {
                req.setParam(file.fid, fp, len - w, b, off, w);
                fp += rsp.count;
                len -= rsp.count;
                off += rsp.count;
                file.send(req, rsp);
            }

                    req.setFileInformation(new FileBasicInfo(ctime, atime, mtime, 0L, attrs));
                    dh.send(req);
                } else if (dh.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                    // use the open file descriptor
                    dh.send(new Trans2SetFileInformation(dh.getConfig(), dfd.getFid(), attrs, ctime, mtime, atime),

        when(response.getService()).thenReturn("A:");
        when(response.isValidTid()).thenReturn(true);
        when(response.getTid()).thenReturn(1);
        when(session.send(any(), any())).thenReturn(response);
        when(config.isIpcSigningEnforced()).thenReturn(false);

        SmbTreeImpl tree = new SmbTreeImpl(session, "SHARE", "A:");
        tree.treeConnect(null, null);

```mermaid
sequenceDiagram
    participant App
    participant Client

    App->>App: Produce Item 1
    App->>Client: Send Item 1
    App->>App: Produce Item 2
    Client->>Client: Process Item 1
    App->>Client: Send Item 2
    App->>App: Produce Item 3
    Client->>Client: Process Item 2
    App->>Client: Send Item 3
    Client->>Client: Process Item 3
    Note over App: Keeps producing...
    Note over Client: Keeps consuming...

     * the smb URL syntax. If the second argument is <code>true</code>, then
     * bytes will be written to the end of the file rather than the beginning.
     *
     * @param file
     *            An <code>SmbFile</code> representing the file to write to
     * @param append
     *            Append to the end of file
     * @throws SmbException if an SMB error occurs
     */

        }

        int r, n;
        final SmbComReadAndXResponse response = new SmbComReadAndXResponse(b, off);
        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;

	}

	var toRemove []string
	for k := range cleanMinioInternalMetadataKeys(m) {
		if stringsHasPrefixFold(k, ReservedMetadataPrefixLower) {
			// Do not need to send any internal metadata
			// values to client.
			toRemove = append(toRemove, k)
			continue
		}

		// https://github.com/google/security-research/security/advisories/GHSA-76wf-9vgp-pj7w

                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();
            }