if ( this.isPrimary ) {
            this.isPrimary = false;

            // primarySetupOffset
            // SMB_COM_TRANSACTION: 61 = 32 SMB header + 1 (word count) + 28 (fixed words)
            // SMB_COM_NT_TRANSACTION: 69 = 32 SMB header + 1 (word count) + 38 (fixed words)
            this.parameterOffset = this.primarySetupOffset;

            // 2* setupCount
            this.parameterOffset += this.setupCount * 2;

import java.util.Enumeration;

import jcifs.smb1.Config;
import jcifs.smb1.util.Hexdump;

abstract class SmbComTransaction extends ServerMessageBlock implements Enumeration {

    private static final int DEFAULT_MAX_DATA_COUNT =
            Config.getInt( "jcifs.smb1.smb.client.transaction_buf_size",
                    SmbComTransaction.TRANSACTION_BUF_SIZE ) - 512;

    // relative to headerStart