* This stream class is unbuffered. Therefore this method will always
     * return 0 for streams connected to regular files. However, a
     * stream created from a Named Pipe this method will query the server using a
     * "peek named pipe" operation and return the number of available bytes
     * on the server.
     */
    @Override
    public int available() throws IOException {

        // We can't verify the exact bytes without a real implementation of writeUTime,
        // but we can check that it's not zero.
        long writtenTime = SMBUtil.readInt4(dst, 2) & 0xFFFFFFFFL;
        // This is a weak check, but better than nothing.
        // A more robust test would require a real SMB1SigningDigest.
        assertTrue(writtenTime != 0 || lastWriteTime == 0);
    }

    /**

            fail("Should have thrown RuntimeException");
        } catch (RuntimeException e) {
            assertEquals("Simulated processing error", e.getMessage());
            // If InputStream wasn't properly closed, this would leak resources
            // try-with-resources ensures cleanup happens
        } catch (IOException e) {
            fail("Should not throw IOException: " + e.getMessage());
        }
    }

    /**

    /**
     * Function code to retrieve DFS referrals
     */
    public static final int FSCTL_DFS_GET_REFERRALS = 0x0060194;
    /**
     * Function code to peek at named pipe data without removing it
     */
    public static final int FSCTL_PIPE_PEEK = 0x0011400C;
    /**
     * Function code to wait for a named pipe to become available
     */

     * This stream class is unbuffered. Therefore this method will always
     * return 0 for streams connected to regular files. However, a
     * stream created from a Named Pipe this method will query the server using a
     * "peek named pipe" operation and return the number of available bytes
     * on the server.
     */
    @Override
    public int available() throws IOException {
        SmbNamedPipe pipe;
        TransPeekNamedPipe req;

     * @return the generated key
     * @throws IOException if an I/O error occurs
     */
    protected abstract long makeKey(Request request) throws IOException;

    /**
     * Peek at the next key without removing it from the input stream
     *
     * @return the next key or null if none available
     * @throws IOException if an I/O error occurs
     */

        // Execute
        service.add(sessionId, url);

        // Verify
        assertEquals(1, mockQueue.size());
        UrlQueueImpl<Long> added = mockQueue.peek();
        assertNotNull(added);
        assertEquals(sessionId, added.getSessionId());
        assertEquals(url, added.getUrl());
        assertEquals(Constants.GET_METHOD, added.getMethod());

        if (handle != null) {
            handle.setActive(false);
            // Cancel any pending notifications
            cancelNotification(handle);
            // Clean up failure count to prevent memory leak
            failureCounts.remove(directoryPath);
        }
    }

    /**
     * Start asynchronous notification monitoring
     *
     * @param handle notification handle
     */

     * This stream class is unbuffered. Therefore this method will always
     * return 0 for streams connected to regular files. However, a
     * stream created from a Named Pipe this method will query the server using a
     * "peek named pipe" operation and return the number of available bytes
     * on the server.
     */
    @Override
    public int available() throws IOException {
        return 0;
    }

    /**

            verify(mockResolver, times(1)).resolveSids(same(mockCtx), eq("server.example"), captor.capture());
            assertSame(sid, captor.getValue()[0]);
        }

        @Test
        @DisplayName("Weak resolve via initContext triggers only once on accessors")
        void testResolveWeakInitContext() throws SmbException, CIFSException {
            SID sid = new SID("S-1-5-21-1-2");
            sid.initContext("srv", mockCtx);