this.useNTSmbs = th.hasCapability(SmbConstants.CAP_NT_SMBS);
        if ( !this.useNTSmbs ) {
            log.debug("No support for NT SMBs");
        }

        // there seems to be a bug with some servers that causes corruption if using signatures +
        // CAP_LARGE_WRITE
        if ( th.hasCapability(SmbConstants.CAP_LARGE_WRITEX) && !th.areSignaturesActive() ) {

        writeSize = file.tree.session.transport.snd_buf_size - 70;

        useNTSmbs = file.tree.session.transport.hasCapability( ServerMessageBlock.CAP_NT_SMBS );
        if( useNTSmbs ) {
            reqx = new SmbComWriteAndX();
            rspx = new SmbComWriteAndXResponse();
        } else {
            req = new SmbComWrite();