log.debug("getDiskFreeSpace", ex);
            switch ( ex.getNtStatus() ) {
            case NtStatus.NT_STATUS_INVALID_INFO_CLASS:
            case NtStatus.NT_STATUS_UNSUCCESSFUL: // NetApp Filer
                if ( !th.isSMB2() ) {
                    // SMB_FS_FULL_SIZE_INFORMATION not supported by the server.
                    ai = queryFSInformation(th, AllocInfo.class, FileSystemInformation.SMB_INFO_ALLOCATION);

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