## 단계

브라우저 내 `http://localhost:8080`에서 동작하는 프론트엔드가 있고, 자바스크립트는 `http://localhost`를 통해 백엔드와 통신한다고 가정해봅시다(포트를 명시하지 않는 경우, 브라우저는 `80` 을 기본 포트로 간주합니다).

그러면 브라우저는 백엔드에 HTTP `OPTIONS` 요청을 보내고, 백엔드에서 이 다른 출처(`http://localhost:8080`)와의 통신을 허가하는 적절한 헤더를 보내면, 브라우저는 프론트엔드의 자바스크립트가 백엔드에 요청을 보낼 수 있도록 합니다.

이를 위해, 백엔드는 "허용된 출처(allowed origins)" 목록을 가지고 있어야만 합니다.

metadata                                                                                                                                                                       100%  226    16.6KB/s   00:00
sftp>
```

## Advanced options

### Change default FTP port

Default port '8021' can be changed via

```
--ftp="address=:3021"
```

### Change FTP passive port range

At the same point, you try to trigger the autocomplete with `Ctrl+Space` and you see:

<img src="/img/python-types/image02.png">

With that, you can scroll, seeing the options, until you find the one that "rings a bell":

<img src="/img/python-types/image03.png">

## More motivation { #more-motivation }

Check this function, it already has type hints:

import org.codelibs.fess.opensearch.config.cbean.cq.ScheduledJobCQ;
import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsScheduledJobCQ;
import org.dbflute.cbean.ConditionQuery;
import org.opensearch.action.search.SearchRequestBuilder;
import org.opensearch.index.query.QueryBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public class BsScheduledJobCB extends EsAbstractConditionBean {

import org.codelibs.fess.opensearch.config.cbean.cq.WebAuthenticationCQ;
import org.codelibs.fess.opensearch.config.cbean.cq.bs.BsWebAuthenticationCQ;
import org.dbflute.cbean.ConditionQuery;
import org.opensearch.action.search.SearchRequestBuilder;
import org.opensearch.index.query.QueryBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public class BsWebAuthenticationCB extends EsAbstractConditionBean {

                            </c:if>
                        </ol>
                    </div>
                </div>
            </div>
        </div>
        <section class="content">
            <la:form action="/admin/dict/protwords/">
                <la:hidden property="crudMode"/>
                <la:hidden property="dictId"/>
                <c:if test="${crudMode==2}">
                    <la:hidden property="id"/>

                    </div>
                </div>
            </div>
        </div>
        <section class="content">
            <la:form action="/admin/keymatch/">
                <la:hidden property="crudMode"/>
                <c:if test="${crudMode==2}">
                    <la:hidden property="id"/>
                    <la:hidden property="versionNo"/>

        assertEquals("http_CLN_/www.example.com/index.html", fileTransformer.getFilePath(url));

        url = "http://www.example.com/action?a=1";
        assertEquals("http_CLN_/www.example.com/action_QUEST_a=1", fileTransformer.getFilePath(url));

        url = "http://www.example.com/action?a=1&b=2";
        assertEquals("http_CLN_/www.example.com/action_QUEST_a=1_AMP_b=2", fileTransformer.getFilePath(url));
    }

import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensearch.action.admin.indices.get.GetIndexResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.index.IndexAction;
import org.opensearch.action.index.IndexRequestBuilder;
import org.opensearch.action.support.WriteRequest;
import org.opensearch.transport.client.Client;

public class SuggesterTest {

import org.codelibs.fess.helper.SuggestHelper;
import org.lastaflute.web.Execute;
import org.lastaflute.web.response.JsonResponse;

import jakarta.annotation.Resource;

/**
 * API action for admin suggest management.
 */
public class ApiAdminSuggestAction extends FessApiAdminAction {

    // ===================================================================================