*
     * @see java.lang.AutoCloseable#close()
     */
    @Override
    void close () throws CIFSException;


    /**
     * @return the tree is connected
     */
    boolean isConnected ();


    /**
     * @return server timezone offset
     * @throws CIFSException
     */
    long getServerTimeZoneOffset () throws CIFSException;


    /**
     * @return server reported domain name

    protected void doCloseInternal () throws CIFSException {
        try {
            @SuppressWarnings ( "resource" )
            SmbTreeHandleImpl th = getTreeHandle();
            if ( this.fileId != null && th.isConnected() ) {
                th.send(new Smb2CloseRequest(th.getConfig(), this.fileId));
            }
        }
        finally {
            this.fileId = null;
        }
    }

    protected void finalize () throws Throwable {
        if ( isConnected() && this.usageCount.get() != 0 ) {
            log.warn("Tree was not properly released");
        }
    }


    /**
     * 
     * @return whether the tree is connected
     */
    public boolean isConnected () {
        return this.tid != -1 && this.session.isConnected() && this.connectionState.get() == 2;
    }


    /**

        return this.treeConnection.hasCapability(cap);
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTreeHandle#isConnected()
     */
    @Override
    public boolean isConnected () {
        return this.treeConnection.isConnected();
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTreeHandle#getConfig()
     */
    @Override

    /**
     * @return whether we have a valid tree connection
     */
    @SuppressWarnings ( "resource" )
    public synchronized boolean isConnected () {
        SmbTreeImpl t = getTreeInternal();
        return t != null && t.isConnected();
    }


    /**
     * 
     * @param loc
     * @param host
     * @return tree handle
     * @throws IOException
     */

        return i;
    }

    /*
     * state values
     * 0 - not connected
     * 1 - connecting
     * 2 - run connected
     * 3 - connected
     * 4 - error
     * 5 - disconnecting
     * 6 - disconnected/invalid
     */
    protected volatile int state = 0;

    protected String name = "Transport" + id++;
    private volatile Thread thread;
    private volatile TransportException te;

     * {@inheritDoc}
     *
     * @see jcifs.SmbFileHandle#isValid()
     */
    @Override
    public boolean isValid () {
        return this.open && this.tree_num == this.tree.getTreeId() && this.tree.isConnected();
    }


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

 */

package jcifs.smb1.smb1;

class TransPeekNamedPipeResponse extends SmbComTransactionResponse {

    private SmbNamedPipe pipe;
    private int head;

    static final int STATUS_DISCONNECTED = 1;
    static final int STATUS_LISTENING = 2;
    static final int STATUS_CONNECTION_OK = 3;
    static final int STATUS_SERVER_END_CLOSED = 4;

    int status, available;

            resp = new TransPeekNamedPipeResponse( pipe );
    
            pipe.send( req, resp );
            if( resp.status == TransPeekNamedPipeResponse.STATUS_DISCONNECTED ||
                    resp.status == TransPeekNamedPipeResponse.STATUS_SERVER_END_CLOSED ) {
                file.opened = false;
                return 0;
            }
            return resp.available;

    }


    /**
     * {@inheritDoc}
     *
     * @see java.lang.Object#finalize()
     */
    @Override
    protected void finalize () throws Throwable {
        if ( isConnected() && this.usageCount.get() != 0 ) {
            log.warn("Session was not properly released");
        }
    }


    /**
     * {@inheritDoc}
     *
     * @see java.lang.AutoCloseable#close()