thread.wait(timeout); /* wait for doConnect */

                switch (state) {
                case 1: /* doConnect never returned */
                    state = 0;
                    thread = null;
                    throw new TransportException("Connection timeout");
                case 2:
                    if (te != null) { /* doConnect throw Exception */
                        state = 4; /* error */

                t.wait(timeout); /* wait for doConnect */

                st = this.state;
                switch (st) {
                case 1: /* doConnect never returned */
                    this.state = 6;
                    throw new ConnectionTimeoutException("Connection timeout");
                case 2:
                    if (this.te != null) { /* doConnect throw Exception */

        }
    }
}

@Override
protected void doConnect() throws IOException {
    // Request directory lease for directories
    if (isDirectory()) {
        requestDirectoryLease();
    }
    
    // Continue with normal connection logic
    super.doConnect();
}

@Override
public void close() throws IOException {
    try {
        super.close();

    }

    private void negotiate(int port, final ServerMessageBlock resp) throws IOException {
        /* We cannot use Transport.sendrecv() yet because
         * the Transport thread is not setup until doConnect()
         * returns and we want to supress all communication
         * until we have properly negotiated.
         */
        synchronized (sbuf) {
            if (port == 139) {
                ssn139();

        }

        if (referral != null) {
            t.markDomainDfs();
        }

        try {
            if (log.isTraceEnabled()) {
                log.trace("doConnect: " + addr);
            }
            t.treeConnect(null, null);
            return t.acquire();
        } catch (final SmbAuthException sae) {
            log.debug("Authentication failed", sae);

}
```

### 6.2 Modifying SmbFile
```java
// In SmbFile.java
private Smb2LeaseKey leaseKey;
private int leaseState;
private LeaseManager leaseManager;

protected void doConnect() throws IOException {
    // ... existing connection logic ...
    
    if (context.getConfig().isUseLeases() && tree.getSession().supports(SMB3_0)) {
        // Request lease when opening file

```java
// In SmbFile.java
private PersistentHandleManager handleManager;
private HandleGuid handleGuid;
private HandleType handleType;
private boolean durableHandleRequested;

protected void doConnect() throws IOException {
    // Check for existing durable handle
    handleManager = tree.getSession().getHandleManager();
    HandleInfo existingHandle = handleManager.getHandleForReconnect(getPath());