endLatch.countDown();
                    }
                }
            });
        }

        startLatch.countDown();
        boolean completed = endLatch.await(30, TimeUnit.SECONDS);
        assertTrue("Test should complete within timeout", completed);
        executor.shutdown();

        assertEquals(threadCount * operationsPerThread * 2, successCount.get());

            throw new SmbException("Buffer access out of bounds");
        }
    }

    /**
     * Safely add integers checking for overflow
     *
     * @param a first value
     * @param b second value
     * @return sum
     * @throws SmbException if overflow would occur
     */
    public int safeAdd(int a, int b) throws SmbException {
        totalValidations.incrementAndGet();

        // IOException handling is done by calling code
    }

    /**
     * Compares two SMB files by name.
     * @param f1 first file to compare
     * @param f1name name of first file
     * @param f2 second file to compare
     * @return comparison result for sorting
     * @throws IOException if an I/O error occurs
     */

    /** Logger instance for this class. */
    private static final Logger logger = LogManager.getLogger(PdfExtractor.class);

    /** Timeout for PDF extraction in milliseconds (default: 30 seconds). */
    protected long timeout = 30000; // 30sec

    /** Whether the extraction thread should be a daemon thread. */
    protected boolean isDaemonThread = false;

    /**
     * Creates a new PdfExtractor instance.

        assertEquals(2, bytesWritten, "Should write 2 bytes.");
        assertEquals(SmbComTransaction.TRANS2_QUERY_PATH_INFORMATION, dst[0], "The first byte should be the subCommand.");
        assertEquals((byte) 0x00, dst[1], "The second byte should be 0.");
    }

    /**
     * Tests the writeParametersWireFormat method.
     */
    @Test
    void testWriteParametersWireFormat() {
        // Given

        assertEquals(domain, type1Message.getSuppliedDomain());
    }

    @Test
    void testInitSecContext_state2_type3Message() throws Exception {
        // Test the second step (processing Type 2 and creating Type 3 message)
        when(mockAuth.getDomain()).thenReturn(domain);
        when(mockAuth.getUsername()).thenReturn(username);
        when(mockAuth.getPassword()).thenReturn(password);

     *
     * @return the request key of the next message
     * @throws IOException if an I/O error occurs
     */
    protected abstract Request peekKey() throws IOException;

    /**
     * Sends a request to the remote endpoint.
     *
     * @param request the request to send
     * @throws IOException if an I/O error occurs
     */
    protected abstract void doSend(Request request) throws IOException;

    }

    private void startDynamicThresholdAdjustment() {
        thresholdAdjustmentTask = scheduler.scheduleWithFixedDelay(this::performDynamicThresholdAdjustment, 30, 30, TimeUnit.SECONDS);
        log.debug("[{}] Started dynamic threshold adjustment task", name);
    }

    private void performDynamicThresholdAdjustment() {
        try {

        when(tree.acquire()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true); // simplifies stream init
        when(tree.getReceiveBufferSize()).thenReturn(4096);

        // Act: first calls construct streams, second calls return cached
        SmbPipeInputStream in1 = handle.getInput();
        SmbPipeInputStream in2 = handle.getInput();
        SmbPipeOutputStream out1 = handle.getOutput();

        // Schedule periodic health checks
        scheduler.scheduleAtFixedRate(this::performHealthCheck, 10, 10, TimeUnit.SECONDS);

        // Schedule interface discovery
        scheduler.scheduleAtFixedRate(this::discoverInterfaces, 0, 30, TimeUnit.SECONDS);
    }

    /**
     * Initialize multi-channel support
     *
     * @throws IOException if initialization fails
     */