@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)
        // make sure that validation is performed in any case

            throws InterruptedException, ExecutionException, TimeoutException {
        boolean found = checkInResult(action, name, infos);
        if ( !found ) {
            // retry, the first watch may have already come back before the triggered change was active
            try {
                setupWatch(w);
                found = checkInResult(action, name, infos);
            }
            catch ( TimeoutException e ) {

                }
                if ( ( !foundKerberos || this.forceFallback ) && this.canFallback && tc.getConfig().isAllowNTLMFallback() ) {
                    log.debug("Falling back to NTLM authentication");
                    return super.createContext(tc, targetDomain, host, initialToken, doSigning);
                }
                else if ( !foundKerberos ) {

        switch ( this.opCode ) {
        case QUERY:
            opCodeString = "QUERY";
            break;
        case WACK:
            opCodeString = "WACK";
            break;
        default:
            opCodeString = Integer.toString(this.opCode);
            break;
        }
        switch ( this.resultCode ) {
        case FMT_ERR:

                try {
                    tree.send(create2);
                }
                catch ( Exception e ) {
                    // timeout is expected for now as we do not ack the break
                    if ( ! ( e.getCause() instanceof RequestTimeoutException ) ) {
                        throw e;
                    }
                }
            }

            buf.dec_ndr_short();        /* cancel count */
        }
        if (ptype == 3 || ptype == 13) {               /* Fault */
            result = buf.dec_ndr_long();
        } else {                        /* Bind_ack or Response */
            decode_out(buf);
        }
    }

    public abstract int getOpnum();
    public abstract void encode_in(NdrBuffer buf) throws NdrException;

            buf.dec_ndr_short(); /* cancel count */
        }
        if ( this.ptype == 3 || this.ptype == 13 ) { /* Fault */
            this.result = buf.dec_ndr_long();
        }
        else { /* Bind_ack or Response */
            decode_out(buf);
        }
    }


    /**
     * 
     * @return the operation number
     */
    public abstract int getOpnum ();


    /**
     * 

        if ( s.indexOf('.') < 0 && s.toUpperCase(Locale.ROOT).equals(s) ) {
            String fqdn = s + "." + dom;
            if ( log.isDebugEnabled() ) {
                log.debug(String.format("Applying DFS netbios name hack %s -> %s ", s, fqdn));
            }
            this.server = fqdn;
        }
    }


    @Override
    public void fixupHost ( String fqdn ) {
        String s = getServer();

                serverSideCopy(src, dest, sh, dh, false);
                return;
            }
            catch ( SmbUnsupportedOperationException e ) {
                log.debug("Server side copy not supported, falling back to normal copying", e);
            }
            catch ( CIFSException e ) {
                log.warn("Server side copy failed", e);
                throw SmbException.wrap(e);
            }
        }

                                                    throws UnknownHostException {
        NbtAddress addr;

        if( name.hexCode == 0x1d && svr == null ) {
            svr = CLIENT.baddr; // bit of a hack but saves a lookup
        }
        name.srcHashCode = svr != null ? svr.hashCode() : 0;
        addr = getCachedAddress( name );

        if( addr == null ) {