/**
     * @return
     * @throws IOException
     */
    private int negotiateWrite ( CommonServerMessageBlockRequest req, boolean setmid ) throws IOException {
        if ( setmid ) {
            makeKey(req);
        }
        else {
            req.setMid(0);
            this.mid.set(1);
        }
        int n = req.encode(this.sbuf, 4);

            // fall trough if the tree connection is already established
            // and send it as a separate request instead
            String svc = null;
            int t = this.tid;
            request.setTid(t);

            if ( !transport.isSMB2() ) {
                ServerMessageBlock req = (ServerMessageBlock) request;
                svc = this.service;
                if ( svc == null ) {

                SmbComSeek seekReq = new SmbComSeek(config, 0);
                seekReq.setMode(0x2); // from EOF
                SmbComSeekResponse seekResp = new SmbComSeekResponse(config);
                seekReq.setFid(response.getFid());
                try {
                    h.send(seekReq, seekResp);
                    if ( log.isDebugEnabled() && seekResp.getOffset() != fileSize ) {

            this.andx.setErrorCode(getErrorCode());
            this.andx.setFlags(getFlags());
            this.andx.setFlags2(getFlags2());
            this.andx.setTid(getTid());
            this.andx.setPid(getPid());
            this.andx.setUid(getUid());
            this.andx.setMid(getMid());
            this.andx.setUseUnicode(this.isUseUnicode());

            if ( this.andx instanceof AndXServerMessageBlock ) {