0; // 1\n  margin-bottom: $headings-margin-bottom;\n  font-family: $headings-font-family;\n  font-style: $headings-font-style;\n  font-weight: $headings-font-weight;\n  line-height: $headings-line-height;\n  color: var(--#{$prefix}heading-color);\n}\n\nh1 {\n  @extend %heading;\n  @include font-size($h1-font-size);\n}\n\nh2 {\n  @extend %heading;\n  @include font-size($h2-font-size);\n}\n\nh3 {\n  @extend %heading;\n  @include font-size($h3-font-size);\n}\n\nh4 {\n  @extend %heading;\n  @include f...

{* ../../docs_src/stream_json_lines/tutorial001_py310.py ln[33:36] hl[34] *}

## Server-Sent Events (SSE) { #server-sent-events-sse }

    return v


class ServerSentEvent(BaseModel):
    """Represents a single Server-Sent Event.

    When `yield`ed from a *path operation function* that uses
    `response_class=EventSourceResponse`, each `ServerSentEvent` is encoded
    into the [SSE wire format](https://html.spec.whatwg.org/multipage/server-sent-events.html#parsing-an-event-stream)
    (`text/event-stream`).

rtant}.h1,.h2,.h3,.h4,.h5,.h6,h1,h2,h3,h4,h5,h6{margin-bottom:.5rem;font-weight:500;line-height:1.2}.h1,h1{font-size:2.5rem}.h2,h2{font-size:2rem}.h3,h3{font-size:1.75rem}.h4,h4{font-size:1.5rem}.h5,h5{font-size:1.25rem}.h6,h6{font-size:1rem}.lead{font-size:1.25rem;font-weight:300}.display-1{font-size:6rem;font-weight:300;line-height:1.2}.display-2{font-size:5.5rem;font-weight:300;line-height:1.2}.display-3{font-size:4.5rem;font-weight:300;line-height:1.2}.display-4{font-size:3.5rem;font-weight:...

                                <h4><la:message key="labels.general_menu_system"/></h4>
                                <div class="form-group row">
                                    <span class="font-weight-bold col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.web_api_json_enabled"/></span>
                                    <div class="form-inline col-sm-9">

      (c-set-offset 'label                 '+)
      (c-set-offset 'statement-case-open   '+)
      (c-set-offset 'statement-cont        '++)
      (c-set-offset 'arglist-intro         'my/arglist-intro)
      (c-set-offset 'arglist-cont-nonempty '(my/arglist-cont-nonempty-indentation c-lineup-arglist))
      (c-set-offset 'arglist-close         'my/arglist-close)
      (c-set-offset 'inexpr-class          0)

Un « middleware » est une fonction qui agit sur chaque **requête** avant qu’elle ne soit traitée par un *chemin d'accès* spécifique. Et aussi sur chaque **réponse** avant son renvoi.

* Il intercepte chaque **requête** qui parvient à votre application.
* Il peut alors faire quelque chose avec cette **requête** ou exécuter tout code nécessaire.
* Ensuite, il transmet la **requête** pour qu’elle soit traitée par le reste de l’application (par un *chemin d'accès*).

OkHttp Server-Sent Events
=========================

Experimental support for server-sent events.
API is not considered stable and may change at any time.

### Download

```kotlin
testImplementation("com.squareup.okhttp3:okhttp-sse:5.3.0")

    client.webSocket!!.finishReader()
    taskFaker.runTasks()
    assertThat(client.closed).isTrue()
    client.listener.assertFailure(
      ProtocolException::class.java,
      "Server-sent frames must not be masked.",
    )
    server.listener.assertClosing(1000, "Hello")
    server.listener.assertExhausted() // Client should not have sent second close.
  }

  @Test

    Note over client,operation: Response is already sent, can't change it anymore
    opt Tasks
        operation -->> tasks: Send background tasks
    end
    opt Raise other exception
        tasks -->> tasks: Handle exceptions in the background task code
    end
```

/// info