while ( len > blockSize && n == r );
            // this used to be len > 0, but this is BS:
            // - InputStream.read gives no such guarantee
            // - otherwise the caller would need to figure out the block size, or otherwise might end up with very small
            // reads
            return (int) ( this.fp - start );
        }
    }


    /**

                    try {
                        keys = new KerberosCredentials().getKeys();
                    }
                    catch ( LoginException e ) {
                        throw new PACDecodingException("Login failure", e);
                    }
                }

                Map<Integer, KerberosKey> keysByAlgo = new HashMap<>();
                for ( KerberosKey key : keys ) {

    }


    private void setupWatch ( SmbWatchHandle w ) throws InterruptedException {
        if ( this.future != null ) {
            this.future.cancel(true);
        }
        this.future = this.executor.submit(w);
        Thread.sleep(1000);
    }


    @Test
    public void testWatchCreate () throws CIFSException, MalformedURLException, UnknownHostException, InterruptedException, ExecutionException {

 */
public enum RequestParam {

    /**
     * 
     */
    NONE,

    /**
     * Wait indefinitely for a response
     */
    NO_TIMEOUT,

    /**
     * Do not retry request on failure
     */
    NO_RETRY,

    /**
     * Save the raw payload for further inspection
     */
    RETAIN_PAYLOAD

                                    auth != NtlmPasswordAuthentication.ANONYMOUS) {
                            throw new SmbAuthException( NtStatus.NT_STATUS_LOGON_FAILURE );
                        }
    
                        if (ex != null)
                            throw ex;
    
                        uid = response.uid;
    

        for (int i = 0; i < 8; i++) {
            if (signature[i] != data[offset + ServerMessageBlock.SIGNATURE_OFFSET + i]) {
                if( log.level >= 2 ) {
                    log.println( "signature verification failure" );
                    Hexdump.hexdump( log, signature, 0, 8 );
                    Hexdump.hexdump( log, data,
                        offset + ServerMessageBlock.SIGNATURE_OFFSET, 8 );
                }

     */
    @Override
    public boolean verifySignature ( byte[] buffer, int i, int size ) {
        // 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)

                 * junk. We need to bump up the wordCount here so that this method returns
                 * the correct number of bytes for signing purposes. Otherwise we get a
                 * signing verification failure.
                 */
                if (command == SMB_COM_NT_CREATE_ANDX && ((SmbComNTCreateAndXResponse)this).isExtended)
                    wordCount += 8;
            }

     * <code>smb://server/</code>, or <code>smb://server/share/</code> URLs
     * because workgroups, servers, and shares cannot be dynamically created
     * (although in the future it may be possible to create shares).
     *
     * @throws CIFSException
     */
    void mkdirs () throws CIFSException;


    /**
     * Creates a directory with the path specified by this

                doRecvSMB2(resp);
            }
            else {
                doRecvSMB1(resp);
            }
        }
        catch ( Exception e ) {
            log.warn("Failure decoding message, disconnecting transport", e);
            response.exception(e);
            synchronized ( response ) {
                response.notifyAll();
            }
            throw e;
        }