super(config, command, name);
        this.andx = andx;
        if (andx != null) {
            this.andxCommand = (byte) andx.getCommand();
        }
    }

    /**
     * Constructs an AndX message block with configuration and command
     * @param config the configuration
     * @param command the SMB command
     */

    private static void checkRequest(final SmbTransportImpl transport, final ServerMessageBlock request, final String svc)
            throws SmbException {
        if (!"A:".equals(svc)) {
            switch (request.getCommand()) {
            case ServerMessageBlock.SMB_COM_OPEN_ANDX:
            case ServerMessageBlock.SMB_COM_NT_CREATE_ANDX:
            case ServerMessageBlock.SMB_COM_READ_ANDX:

                response = sendComTransaction(request, response, params);
            } else {
                if (response != null) {
                    response.setCommand(request.getCommand());
                }
                response = sendrecv(request, response, params);
            }
        } catch (final SmbException se) {
            throw se;

        this.flags = 0;
        this.digest = null;
        this.sessionId = 0;
        this.treeId = 0;
    }

    /**
     * @return the command
     */
    @Override
    public final int getCommand() {
        return this.command;
    }

    /**
     * Gets the offset to the next compound command in the message chain.
     *
     * @return offset to next compound command
     */