*/
  fun sameHostAndPort(url: HttpUrl): Boolean

  /**
   * A plan holds either an immediately-usable connection, or one that must be connected first.
   * These steps are split so callers can call [connectTcp] on a background thread if attempting
   * multiple plans concurrently.
   */
  interface Plan {
    val isReady: Boolean

    fun connectTcp(): ConnectResult

    fun connectTlsEtc(): ConnectResult

Crawler crawler = container.getComponent("crawler");
crawler.addUrl("https://example.com");
crawler.crawlerContext.setMaxAccessCount(500);
String sessionId = crawler.execute();
```

### Background Crawling

```java
// Configure for background execution
crawler.setBackground(true);
String sessionId = crawler.execute();

// Check crawling status
while (crawler.crawlerContext.getStatus() == CrawlerStatus.RUNNING) {

# Print a greeting to the universe
echo "Hello universe"
```

...and a console code example...

```console
$ <font color="#4E9A06">fastapi</font> run <u style="text-decoration-style:solid">main.py</u>
<span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting server
        Searching for package file structure
```

...and another console code example...

```console
// Create a directory "Code"

- 接著把**請求**傳遞給應用程式的其餘部分（某個*路徑操作*）處理。
- 之後再接收應用程式（某個*路徑操作*）所產生的**回應**。
- 可以對該**回應**做一些處理或執行所需的程式碼。
- 然後回傳**回應**。

/// note | 技術細節

如果你有使用帶有 `yield` 的相依性，其釋放階段的程式碼會在中介軟體之後執行。

若有背景工作（在[背景工作](background-tasks.md)一節會介紹，你稍後會看到），它們會在所有中介軟體之後執行。

///

## 建立中介軟體 { #create-a-middleware }

要建立中介軟體，將裝飾器 `@app.middleware("http")` 加在函式上方。

中介軟體函式會接收：

- `request`。
- 一個函式 `call_next`，會以 `request` 作為參數。

│   │   └── api/               # API controllers
│   ├── service/               # Business logic services
│   ├── pager/                 # Pagination handlers
│   └── job/                   # Background jobs
├── api/                       # REST API infrastructure
├── opensearch/                # DBFlute integration for OpenSearch
│   ├── config/                # Config index (crawl configs, schedules)

* 然后它将这个**请求**传递给应用程序的其他部分（某个*路径操作*）处理。
* 之后它获取应用程序生成的**响应**（由某个*路径操作*产生）。
* 它可以对该**响应**做一些事情或者执行任何需要的代码。
* 然后它返回这个**响应**。

/// note | 技术细节

如果你有使用 `yield` 的依赖，依赖中的退出代码会在中间件之后运行。

如果有任何后台任务（会在[后台任务](background-tasks.md)一节中介绍，你稍后会看到），它们会在所有中间件之后运行。

///

## 创建中间件 { #create-a-middleware }

要创建中间件，你可以在函数的顶部使用装饰器 `@app.middleware("http")`。

中间件函数会接收：

* `request`。
* 一个函数 `call_next`，它会把 `request` 作为参数接收。

1.  Address the perceived conflict directly with those involved, preferably in a
    real-time medium.
2.  If this fails, get a third party (e.g. a mutual friend, and/or someone with
    background on the issue, but not involved in the conflict) to intercede.
3.  If you are still unable to resolve the conflict, and you believe it rises to
    harassment or another code of conduct violation, report it.

    public void finalizeReferent() {
      finalizeReferentCalled = true;
    }
  }

  /**
   * Keeps a weak reference to the underlying reference queue. When this reference is cleared, we
   * know that the background thread has stopped and released its strong reference.
   */
  private WeakReference<ReferenceQueue<Object>> queueReference;

  @Test
  public void testThatFinalizerStops() {
    weaklyReferenceQueue();

tors.validate_strength.calculatePasswordStrength(b),g={background:"pink",color:"#FF0000",fontWeight:"bold",border:"red solid 1px",borderWidth:"0px 0px 4px",display:"inline-block",fontSize:d.fontSize,padding:d.padding},h=d.bad;0===e.length&&(e=a("<span></span>"),e.addClass("strength-meter").appendTo(c)),b?e.show():e.hide(),1===f?h=d.weak:2===f?(g.background="lightyellow",g.borderColor="yellow",g.color="goldenrod",h=d.good):f>=3&&(g.background="lightgreen",g.borderColor="darkgreen",g.color="darkgr...

}

func (target *ElasticsearchTarget) initElasticsearch() error {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	err := target.checkAndInitClient(ctx)
	if err != nil {
		if err != store.ErrNotConnected {
			target.loggerOnce(context.Background(), err, target.ID().String())
		}
		return err
	}

	return nil
}