# Événements envoyés par le serveur (SSE) { #server-sent-events-sse }

Vous pouvez diffuser des données vers le client en utilisant les **Server-Sent Events** (SSE).

C'est similaire à [Diffuser des JSON Lines](stream-json-lines.md), mais cela utilise le format `text/event-stream`, pris en charge nativement par les navigateurs via l’API [`EventSource`](https://developer.mozilla.org/en-US/docs/Web/API/EventSource).

/// info | Info

Ajouté dans FastAPI 0.135.0.

 * Futures#transform(ListenableFuture, com.google.common.base.Function, Executor) Futures.transform}
 * (or {@link FluentFuture#transform(com.google.common.base.Function, Executor)
 * FluentFuture.transform}), but you will often find it easier to use a framework. Frameworks
 * automate the process, often adding features like monitoring, debugging, and cancellation.

[`SpooledTemporaryFile`](https://docs.python.org/3/library/tempfile.html#tempfile.SpooledTemporaryFile) (ein [dateiartiges](https://docs.python.org/3/glossary.html#term-file-like-object) Objekt). Das ist das tatsächliche Python-Objekt, das Sie direkt anderen Funktionen oder Bibliotheken übergeben können, welche ein „file-like“-Objekt erwarten.

`UploadFile` hat die folgenden `async`hronen Methoden. Sie alle rufen die entsprechenden Methoden des darunterliegenden Datei-Objekts auf (wobei intern...

		if e.ConditionRHS.In.ListExpr != nil {
			return e.ConditionRHS.In.ListExpr.aggregateRow(r, tableAlias)
		}
		return nil
	case e.ConditionRHS.Like != nil:
		err = e.ConditionRHS.Like.Pattern.aggregateRow(r, tableAlias)
		if err != nil {
			return err
		}
		return e.ConditionRHS.Like.EscapeChar.aggregateRow(r, tableAlias)
	default:
		return errInvalidASTNode
	}
}

      ) {
        return null
      }

      // If the path is absent or didn't start with '/', use the default path. It's a string like
      // '/foo/bar' for a URL like 'http://example.com/foo/bar/baz'. It always starts with '/'.
      if (path == null || !path.startsWith("/")) {
        val encodedPath = url.encodedPath
        val lastSlash = encodedPath.lastIndexOf('/')

     <dependency>
       <groupId>com.squareup.okhttp</groupId>
       <artifactId>logging-interceptor</artifactId>
       <version>2.6.0</version>
     </dependency>
     ```

    Configure basic logging like this:

    ```java
    HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
    loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BASIC);
    client.networkInterceptors().add(loggingInterceptor);

Doğrudan bir `StreamingResponse` döndürmek yerine, muhtemelen [Veri Stream Etme](./stream-data.md) bölümündeki tarzı takip etmelisiniz; çok daha kullanışlıdır ve iptali arka planda sizin için halleder.

JSON Lines stream ediyorsanız, [JSON Lines Stream Etme](../tutorial/stream-json-lines.md) kılavuzunu izleyin.

///

### `FileResponse` { #fileresponse }

Asenkron olarak bir dosyayı response olarak stream eder.

# Static Files - `StaticFiles`

You can use the `StaticFiles` class to serve static files, like JavaScript, CSS, images, etc.

Read more about it in the [FastAPI docs for Static Files](https://fastapi.tiangolo.com/tutorial/static-files/).

You can import it directly from `fastapi.staticfiles`:

```python
from fastapi.staticfiles import StaticFiles
```

  }

  /**
   * Streams lines from a {@link File}, stopping when our callback returns false, or we have read
   * all of the lines.
   *
   * @param file the file to read from
   * @param charset the charset used to decode the input stream; see {@link StandardCharsets} for
   *     helpful predefined constants
   * @param callback the {@link LineProcessor} to use to handle the lines
   * @return the output of processing the lines

a[data-terminal-control] {
    text-align: right;
    display: block;
    color: #aebbff;
}

[data-ty] {
    display: block;
    line-height: 2;
}

[data-ty]:before {
    /* Set up defaults and ensure empty lines are displayed. */
    content: '';
    display: inline-block;
    vertical-align: middle;
}

[data-ty="input"]:before,
[data-ty-prompt]:before {
    margin-right: 0.75em;
    color: var(--color-text-subtle);