this.localPort = localPort;
        this.auth = auth;
        trees = new Vector();
        connectionState = 0;
    }

    synchronized SmbTree getSmbTree( String share, String service ) {
        SmbTree t;

        if( share == null ) {
            share = "IPC$";
        }
        for( Enumeration e = trees.elements(); e.hasMoreElements(); ) {
            t = (SmbTree)e.nextElement();

            f.createNewFile();
            boolean renamed = false;
            try {
                f.renameTo(tgt, true);
                Assert.assertFalse("Should not be able to rename between trees", true);
            }
            catch ( SmbUnsupportedOperationException e ) {
                try ( SmbTreeHandle th = defaultShareRoot.getTreeHandle() ) {
                    Assume.assumeTrue("Not SMB2", th.isSMB2());

        return this.pipe;
    }


    @Override
    public SmbTreeHandleImpl ensureTreeConnected () throws CIFSException {
        if ( this.treeHandle == null ) {
            // extra acquire to keep the tree alive
            this.treeHandle = this.pipe.ensureTreeConnected();
        }
        return this.treeHandle.acquire();
    }


    public String getUncPath () {
        return this.uncPath;
    }

    /**
     * Property <tt>jcifs.smb.client.strictResourceLifecycle</tt> (bool, default false)
     * 
     * If enabled, SmbFile instances starting with their first use will hold a reference to their tree.
     * This means that trees/sessions/connections won't be idle-disconnected even if there are no other active
     * references (currently executing code, file descriptors).
     * 

import jcifs.internal.smb1.trans.nt.NtTransQuerySecurityDesc;
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 {

    private int pathConsumed;
    private long ttl;
    private String server; // Server
    private String share; // Share
    private String link;
    private String path; // Path relative to tree from which this referral was thrown

    private long expiration;
    private int rflags;

    private boolean resolveHashes;

    private DfsReferralDataImpl next;

/** 
 * Try Broadcast queries first, then try to resolve the name using the
 * nameserver.
 */

    public static final int M_NODE = 2;

/** 
 * A Hybrid node tries to resolve a name using the nameserver first. If
 * that fails use the broadcast address. This is the default if a nameserver
 * is provided. This is the behavior of Microsoft Windows machines.
 */ 

import jcifs.internal.smb2.nego.Smb2NegotiateResponse;
import jcifs.internal.smb2.tree.Smb2TreeConnectRequest;
import jcifs.internal.smb2.tree.Smb2TreeDisconnectRequest;


class SmbTreeImpl implements SmbTreeInternal {

    private static final Logger log = LoggerFactory.getLogger(SmbTreeImpl.class);

    private static AtomicLong TREE_CONN_COUNTER = new AtomicLong();

    /*
     * 0 - not connected
     * 1 - connecting

            break;
        case SMB2_LOGOFF:
            c = "SMB2_LOGOFF";
            break;
        case SMB2_TREE_CONNECT:
            c = "SMB2_TREE_CONNECT";
            break;
        case SMB2_TREE_DISCONNECT:
            c = "SMB2_TREE_DISCONNECT";
            break;
        case SMB2_CREATE:
            c = "SMB2_CREATE";
            break;
        case SMB2_CLOSE:

    static final byte SMB_COM_FIND_CLOSE2        = (byte)0x34;
    static final byte SMB_COM_TREE_DISCONNECT    = (byte)0x71;
    static final byte SMB_COM_NEGOTIATE          = (byte)0x72;
    static final byte SMB_COM_SESSION_SETUP_ANDX = (byte)0x73;
    static final byte SMB_COM_LOGOFF_ANDX        = (byte)0x74;
    static final byte SMB_COM_TREE_CONNECT_ANDX  = (byte)0x75;
    static final byte SMB_COM_NT_TRANSACT        = (byte)0xA0;