testEncryptionKey, testDecryptionKey);

        // When/Then - Multiple closes should be safe
        assertDoesNotThrow(() -> {
            context.close();
            context.close();
            context.close();
        });

        assertTrue(context.isClosed());
    }

    @Test
    @DisplayName("Should handle concurrent operations with SecureKeyManager")

     *
     * @see jcifs.SmbPipeHandle#close()
     */
    @Override
    public synchronized void close() throws CIFSException {
        final boolean wasOpen = isOpen();
        this.open = false;
        if (this.input != null) {
            this.input.close();
            this.input = null;
        }

        if (this.output != null) {
            this.output.close();
            this.output = null;

        }
    }

    /**
     * Check if this context is closed
     *
     * @return true if closed, false otherwise
     */
    public boolean isClosed() {
        return closed;
    }

        return this.open && this.tree_num == this.tree.getTreeId() && this.tree.isConnected();
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbFileHandle#close(long)
     */
    @Override
    public synchronized void close(final long lastWriteTime) throws CIFSException {
        closeInternal(lastWriteTime, true);
    }

    /**
     * @param lastWriteTime
     * @throws SmbException
     */

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTransportPool#close()
     */
    @Override
    public boolean close() throws CIFSException {
        boolean inUse = false;

        // Cleanup first
        cleanup();
        log.debug("Closing pool");

        // Create a snapshot of connections to close
        List<SmbTransportImpl> toClose = new ArrayList<>(this.connections);

            }
            closed = true;
        }
    }

    /**
     * Check if this authenticator has been closed
     *
     * @return true if closed, false otherwise
     */
    public boolean isClosed() {
        return closed;
    }

    private void checkNotClosed() {
        if (closed) {
            throw new IllegalStateException("Authenticator has been closed");
        }
    }

                final boolean timeout = ex instanceof SocketTimeoutException || msg != null && msg.equals("Read timed out");
                final boolean closed = msg != null && msg.equals("Socket closed");

                if (closed) {
                    log.trace("Remote closed connection");
                } else if (timeout) {
                    log.debug("socket timeout in non peek state", ex);
                } else {

                            timingRatio, TIMING_TOLERANCE, timeStart, timeMiddle, timeEnd));
        } finally {
            // Clean up resources
            baseAuth.close();
            startAuth.close();
            middleAuth.close();
            endAuth.close();
        }
    }

    /**
     * Test constant-time comparison with various password lengths.
     */
    @Test

        when(pooledSpy.disconnect(false, false)).thenReturn(true); // In use
        when(nonPooledSpy.disconnect(false, false)).thenReturn(false); // Not in use

        // When: Close the pool
        boolean inUse = pool.close();

        // Then: Should report in-use and call disconnect on all
        assertTrue(inUse, "Should report connections in use");
        verify(pooledSpy).disconnect(false, false);

            return false;
        }
    }

    /**
     * Get cluster name for witness discovery
     *
     * @param serverAddress the server address
     * @return cluster name or null
     */
    private String getClusterName(InetAddress serverAddress) {
        // Simple implementation - could be enhanced with proper cluster discovery
        String hostname = serverAddress.getHostName();