{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[34:37] hl[35] *}

## `ServerSentEvent` { #serversentevent }

Если вам нужно задать поля SSE, такие как `event`, `id`, `retry` или `comment`, вы можете возвращать через `yield` объекты `ServerSentEvent` вместо обычных данных.

Импортируйте `ServerSentEvent` из `fastapi.sse`:

{* ../../docs_src/server_sent_events/tutorial002_py310.py hl[4,26] *}

contributions, often because we probably won't get to them right now. If you
decide to start on an issue, leave a comment so that other people know that
you're working on it. If you want to help out, but not alone, use the issue
comment thread to coordinate.

### Contribution guidelines and standards

Before sending your pull request for

         * The network name of the share.
         */
        public String netname;
        /**
         * The type of the share.
         */
        public int type;
        /**
         * A comment or description of the share.
         */
        public String remark;

        @Override
        public void encode(NdrBuffer _dst) throws NdrException {
            _dst.align(4);

Ces exemples sont volontairement simples, mais ils montrent comment tout cela fonctionne.

Dans les chapitres sur la sécurité, il existe des fonctions utilitaires implémentées de la même manière.

Si vous avez compris tout cela, vous savez déjà comment ces outils utilitaires pour la sécurité fonctionnent en interne.

///

    id: help
    attributes:
      label: Commit to Help
      description: |
        After submitting this, I commit to one of:

          * Read open questions until I find 2 where I can help someone and add a comment to help there.
          * I already hit the "watch" button in this repository to receive notifications and I commit to help at least 2 people that ask questions in the future.

你也可以省略回傳型別。FastAPI 會使用 [`jsonable_encoder`](./encoder.md) 轉換資料並送出。

{* ../../docs_src/server_sent_events/tutorial001_py310.py ln[34:37] hl[35] *}

## `ServerSentEvent` { #serversentevent }

如果你需要設定 `event`、`id`、`retry` 或 `comment` 等 SSE 欄位，你可以改為 `yield` 出 `ServerSentEvent` 物件，而不是單純的資料。

從 `fastapi.sse` 匯入 `ServerSentEvent`：

{* ../../docs_src/server_sent_events/tutorial002_py310.py hl[4,26] *}

                __version__,
            )

            assert __version__
            try:
                # parse_options_header is only available in the right multipart
                from multipart.multipart import (  # type: ignore[import-untyped]  # ty: ignore[unused-ignore-comment]
                    parse_options_header,
                )

## Autres middlewares { #other-middlewares }

Vous pouvez en lire davantage sur d’autres middlewares dans le [Guide de l’utilisateur avancé : Middleware avancé](../advanced/middleware.md).

If they reply, there's a high chance you would have solved their problem, congrats, **you're a hero**! 🦸

* Now, if that solved their problem, you can ask them to:

    * In GitHub Discussions: mark the comment as the **answer**.
    * In GitHub Issues: **close** the issue.

## Watch the GitHub repository { #watch-the-github-repository }

Der Prozess besteht normalerweise darin, dass **Sie in Ihrem Code definieren**, welche Nachricht Sie senden möchten, den **Requestbody**.

Sie definieren auch auf irgendeine Weise, in welchen **Momenten** Ihre App diese Requests oder Events senden wird.