* 
     * Will block until the server returns a set of changes that match the given filter. The file will be automatically
     * opened if it is not and should be closed with {@link #close()} when no longer
     * needed.
     * 
     * Closing the context should cancel a pending notify request, but that does not seem to work reliable in all
     * implementations.
     * 

            ex0 = ex; // Defer to below where we're locked
            return;
        } finally {
            synchronized (run_thread) {
                if (run_thread != thread) {
                    /* Thread no longer the one setup for this transport --
                     * doConnect returned too late, just ignore.
                     */
                    if (ex0 != null) {
                        if (log.level >= 2)

            return;
        }
        finally {
            synchronized ( run_thread ) {
                if ( run_thread != this.thread ) {
                    /*
                     * Thread no longer the one setup for this transport --
                     * doConnect returned too late, just ignore.
                     */
                    if ( ex0 instanceof SocketTimeoutException ) {

        "Waiting for a process to open the other end of the pipe.", "File is a directory.", "A duplicate name exists on the network.",
        "The specified network name is no longer available.", "Network access is denied.", "Bad device type", "The network name cannot be found.",

        // observed too that signatures on error responses are sometimes wrong??
        // Looks like the failure case also is just reflecting back the signature we sent

        // with SMB3's negotiation validation it's no longer possible to ignore this (on the validation response)
        // make sure that validation is performed in any case
        Smb2SigningDigest dgst = getDigest();

                        RC4 rc4 = new RC4(ntlm2SessionKey);
                        rc4.update(masterKey, 0, 16, exchangedKey, 0);
/* RC4 was not added to Java until 1.5u7 so let's use our own for a little while longer ...
                        try {
                            Cipher rc4 = Cipher.getInstance("RC4");
                            rc4.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(ntlm2SessionKey, "RC4"));

                if ( sae.getNtStatus() == NtStatus.NT_STATUS_ACCESS_VIOLATION ) {
                    /*
                     * Server challenge no longer valid for
                     * externally supplied password hashes.
                     */
                    HttpSession ssn = req.getSession(false);
                    if ( ssn != null ) {

                            ": " + sae );
                }
                if( sae.getNtStatus() == sae.NT_STATUS_ACCESS_VIOLATION ) {
                    /* Server challenge no longer valid for
                     * externally supplied password hashes.
                     */
                    HttpSession ssn = req.getSession(false);
                    if (ssn != null) {

 * IP address is returned.
 *
 * @return the text representation of the hostname associated with this address
 */ 

    public String getHostName() {
        /* 2010 - We no longer try a Node Status to get the
         * hostname because apparently some servers do not respond
         * anymore. I think everyone post Windows 98 will accept
         * an IP address as the tconHostName which is the principal

     */
    @Override
    protected int doSendReceiveFragment ( byte[] buf, int off, int length, byte[] inB ) throws IOException {
        if ( this.handle.isStale() ) {
            throw new IOException("DCERPC pipe is no longer open");
        }

        int have = this.handle.sendrecv(buf, off, length, inB, getMaxRecv());

        int fraglen = Encdec.dec_uint16le(inB, 8);
        if ( fraglen > getMaxRecv() ) {