* @throws IOException if an I/O error occurs
     */
    protected abstract void doSkip(Long key) throws IOException;

    /**
     * Checks if the transport is disconnected.
     *
     * @return whether the transport is disconnected
     */
    public boolean isDisconnected() {
        return this.state == 4 || this.state == 5 || this.state == 6 || this.state == 0;
    }

    /**

            assertTrue(
                    initialState == RdmaConnection.RdmaConnectionState.DISCONNECTED
                            || initialState == RdmaConnection.RdmaConnectionState.CONNECTING,
                    "Initial state should be DISCONNECTED or CONNECTING");

            // Test connection properties
            // Note: Local address may be null for TCP fallback provider

                    if ((inUse ? l != 1 : l > 0)) {
                        log.warn("Disconnected tree while still in use " + this);
                        dumpResource();
                        wasInUse = true;
                        if (sess.getConfig().isTraceResourceUsage()) {
                            throw new RuntimeCIFSException("Disconnected tree while still in use");
                        }
                    }

     */
    @Test
    public void testConnectedFlag() {
        assertFalse("Initially not connected", fesenClient.connected());

        // After destroy, should be disconnected
        fesenClient.destroy();
        assertFalse("Should be disconnected after destroy", fesenClient.connected());
    }

import jcifs.util.transport.TransportException;

/**
 * This class encapsulates the logic for switching tree connections
 *
 * Switching trees can occur either when the tree has been disconnected by failure or idle-timeout - as well as on
 * DFS referrals.
 *
 * @author mbechler
 *
 */
class SmbTreeConnection implements AutoCloseable {

        this.channelId = channelId;
        this.transport = transport;
        this.localInterface = localInterface;
        this.remoteInterface = remoteInterface;
        this.state = ChannelState.DISCONNECTED;
        this.establishedTime = System.currentTimeMillis();
        this.lastActivityTime = establishedTime;

        this.bytesSent = new AtomicLong();
        this.bytesReceived = new AtomicLong();

    /** The object was not found */
    int NT_STATUS_OBJECT_NAME_NOT_FOUND = 0xC0000034;
    /** The object name already exists */
    int NT_STATUS_OBJECT_NAME_COLLISION = 0xC0000035;
    /** The port is disconnected */
    int NT_STATUS_PORT_DISCONNECTED = 0xC0000037;
    /** The object path is invalid */
    int NT_STATUS_OBJECT_PATH_INVALID = 0xC0000039;
    /** The object path was not found */

    protected volatile RdmaConnectionState state;
    protected RdmaCredits credits;
    protected int maxFragmentedSize;
    protected int maxReadWriteSize;
    
    public enum RdmaConnectionState {
        DISCONNECTED,
        CONNECTING,
        CONNECTED,
        ESTABLISHED,
        ERROR,
        CLOSING,
        CLOSED
    }
    
    public RdmaConnection(InetSocketAddress remote, InetSocketAddress local) {

- **MS-SMB2 Section 3.2.4.1.6**: Alternative Channel Creation
- **MS-SMB2 Section 3.3.5.15.12**: Channel Binding

## 3. Multi-Channel Architecture

### 3.1 Channel States
```java
public enum ChannelState {
    DISCONNECTED(0),     // Not connected
    CONNECTING(1),       // Connection in progress
    AUTHENTICATING(2),   // Authentication in progress
    ESTABLISHED(3),      // Ready for use

    /** The object was not found */
    int NT_STATUS_OBJECT_NAME_NOT_FOUND = 0xC0000034;
    /** The object name already exists */
    int NT_STATUS_OBJECT_NAME_COLLISION = 0xC0000035;
    /** The port is disconnected */
    int NT_STATUS_PORT_DISCONNECTED = 0xC0000037;
    /** The object path is invalid */
    int NT_STATUS_OBJECT_PATH_INVALID = 0xC0000039;
    /** The object path was not found */