// Remove should not throw exception even if channel doesn't exist
        assertDoesNotThrow(() -> channelManager.removeChannel(channel));
    }

    @Test
    void testShutdown() {
        assertDoesNotThrow(() -> channelManager.shutdown());

        // Multiple shutdowns should be safe

/**
 * Load balancing strategies for multi-channel connections
 */
public enum LoadBalancingStrategy {
    /**
     * Round-robin selection through available channels
     */
    ROUND_ROBIN,

    /**
     * Select the least busy channel based on pending operations
     */
    LEAST_LOADED,

    /**
     * Weighted random selection based on channel scores
     */
    WEIGHTED_RANDOM,

    /**

        when(mockLoadBalancer.selectChannel(mockOperation)).thenThrow(new ChannelLoadBalancer.NoAvailableChannelException("No channels"));

        IOException error = new IOException("Connection failed");

        // Should not throw exception even if no alternative channels
        assertDoesNotThrow(() -> failover.handleFailure(failedChannel, error));

        assertEquals(0, failedChannel.getRequestsPending());

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;
import java.net.URLStreamHandler;
import java.nio.channels.Channels;
import java.nio.charset.StandardCharsets;

import org.codelibs.core.lang.StringUtil;

import com.google.auth.oauth2.ServiceAccountCredentials;
import com.google.cloud.NoCredentials;

 */
package org.codelibs.fess.crawler.client.gcs;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.nio.channels.Channels;
import java.util.Date;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

- [ ] Create channel synchronization mechanism
- [ ] Implement channel failure detection
- [ ] Add automatic channel recovery
- [ ] Create channel performance monitoring

#### 3.3 Integration Points
- Modify `SmbTransportPool` for multiple connections per session
- Update `SmbSession` for multi-channel awareness
- Enhance `SmbTransport` for channel management

---

### Phase 4: Directory Leasing

import jcifs.CIFSException;

/**
 * Unit tests for Multi-Channel configuration properties
 */
class MultiChannelConfigurationTest {

    @Test
    void testDefaultMultiChannelSettings() throws CIFSException {
        PropertyConfiguration config = new PropertyConfiguration(new Properties());

        assertTrue(config.isUseMultiChannel(), "Multi-channel should be enabled by default");

import jcifs.dcerpc.ndr.NdrBuffer;
import jcifs.dcerpc.ndr.NdrException;

/**
 * DCE/RPC bind request message implementation.
 * This class handles the binding process for establishing DCE/RPC communication channels.
 *
 * @author mbechler
 */
public class DcerpcBind extends DcerpcMessage {

    private static final String[] result_message = { "0", "DCERPC_BIND_ERR_ABSTRACT_SYNTAX_NOT_SUPPORTED",

        } catch (Exception e) {
            log.warn("Failed to recover channel {}: {}", channel.getChannelId(), e.getMessage());

            // Schedule next retry or remove
            handleFailure(channel, e);
        }
    }

    private void removeChannel(ChannelInfo channel) {
        log.info("Removing failed channel {} after max retries", channel.getChannelId());

    // Multi-channel configuration fields
    /**
     * Whether to use SMB3 multi-channel support for improved performance and redundancy
     */
    protected boolean useMultiChannel;
    /**
     * Maximum number of SMB3 channels to establish per session
     */
    protected int maxChannels;
    /**
     * Channel binding policy: -1=not set, 0=disabled, 1=preferred, 2=required