* actually purer. However, in the case of smb we know the
     * wordCount and byteCount. And since every subclass of
     * ServerMessageBlock would have to perform the same read
     * operation on the input stream, we might as will pull that
     * common functionality into the superclass and read wordCount
     * and byteCount worth of data.
     * 
     * We will still use the readXxxWireFormat return values to

        long start = System.currentTimeMillis() / 1000 * 1000;
        // this is not too great as it depends on timing/clockskew
        // first we need to obtain a ticket, therefor need valid credentials
        // then we need to wait until the ticket is expired
        int wait = 10 * 1000;
        long princExp = start + ( wait / 2 );

     * @return whether this tree may be a DFS share
     * @throws SmbException
     */
    public boolean isPossiblyDfs () throws SmbException {
        if ( this.connectionState.get() == 2 ) {
            // we are connected, so we know
            return isDfs();
        }
        try ( SmbTransportImpl transport = this.session.getTransport() ) {
            return transport.getNegotiateResponse().isDFSSupported();
        }
    }

    }


    private SmbNegotiation negotiate ( int prt ) throws IOException {
        /*
         * We cannot use Transport.sendrecv() yet because
         * the Transport thread is not setup until doConnect()
         * returns and we want to suppress all communication
         * until we have properly negotiated.
         */
        synchronized ( this.inLock ) {
            if ( prt == 139 ) {

            return 0;
        }
        bufferIndex += len + 1;
        // win98 observed not returning nativeFileSystem
/* Problems here with iSeries returning ASCII even though useUnicode = true
 * Fortunately we don't really need nativeFileSystem for anything.
        if( byteCount > bufferIndex - start ) {
            nativeFileSystem = readString( buffer, bufferIndex );

        int start = bufferIndex;

        pathConsumed = readInt2( buffer, bufferIndex );
        bufferIndex += 2;
            /* Samba 2.2.8a will reply with Unicode paths even though
             * ASCII is negotiated so we must use flags2 (probably
             * should anyway).
             */
        if((flags2 & FLAGS2_UNICODE) != 0) {
            pathConsumed /= 2;
        }
        numReferrals = readInt2( buffer, bufferIndex );

            else {
                // queryPath on a share root will fail, we only know whether this is one after we have resolved DFS
                // referrals.
                try ( SmbTreeHandleImpl th = ensureTreeConnected() ) {
                    if ( this.fileLocator.getType() == TYPE_SHARE ) {
                        // treeConnect is good enough, but we need to do this after resolving DFS

 * To fully understand the information exposed by this class a description
 * of the access check algorithm used by Windows is required. The following
 * is a basic description of the algorithm. For a more complete description
 * we recommend reading the section on Access Control in Keith Brown's
 * "The .NET Developer's Guide to Windows Security" (which is also
 * available online).
 * <p>

                if ( log.isDebugEnabled() ) {
                    log.debug("Failures " + failCount.get() + " wrote " + writeCount.get() + " read " + readCnt);
                }
                assertEquals("Read less than we wrote", writeCount.get(), readCnt);
                assertEquals(n, failCount.get() + writeCount.get());
            }
            finally {
                f.delete();
            }
        }
    }

    /*
     * It is a little awkward but prudent to pass the quering address
     * so that it may be included in the list of results. IOW we do
     * not want to create a new NbtAddress object for this particular
     * address from which the query is constructed, we want to populate
     * the data of the existing address that should be one of several
     * returned by the node status.
     */