// - the specification does not clearly require that (it does for SMB3+)
                        // - there seem to be server implementations (known: EMC Isilon) that do not sign the final
                        // response
                        if ( negoResp.getSelectedDialect().atLeast(DialectVersion.SMB300) || response.isSigned() ) {
                            response.setDigest(dgst);

            throw new SmbException("Not an SMB1 request");
        }

        this.negotiated.setupRequest(request);

        if ( response != null ) {
            request.setResponse(response); /* needed by sign */
            response.setDigest(request.getDigest());
        }

        try {
            if ( log.isTraceEnabled() ) {
                log.trace("Sending " + request);
            }

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