* Credentials (Authorization headers, Cookies, etc).
* Specific HTTP methods (`POST`, `PUT`) or all of them with the wildcard `"*"`.
* Specific HTTP headers or all of them with the wildcard `"*"`.

```Python hl_lines="2  6-11  13-19"
{!../../../docs_src/cors/tutorial001.py!}
```

* ✍ 📇 ✔ 🇨🇳 (🎻).
* 🚮 ⚫️ "🛠️" 👆 **FastAPI** 🈸.

👆 💪 ✔ 🚥 👆 👩‍💻 ✔:

* 🎓 (✔ 🎚, 🍪, ♒️).
* 🎯 🇺🇸🔍 👩‍🔬 (`POST`, `PUT`) ⚖️ 🌐 👫 ⏮️ 🃏 `"*"`.
* 🎯 🇺🇸🔍 🎚 ⚖️ 🌐 👫 ⏮️ 🃏 `"*"`.

```Python hl_lines="2  6-11  13-19"
{!../../../docs_src/cors/tutorial001.py!}
```

🔢 🔢 ⚙️ `CORSMiddleware` 🛠️ 🚫 🔢, 👆 🔜 💪 🎯 🛠️ 🎯 🇨🇳, 👩‍🔬, ⚖️ 🎚, ✔ 🖥 ✔ ⚙️ 👫 ✖️-🆔 🔑.

📄 ❌ 🐕‍🦺:

---

✋️ 👉 🖼, 👥 🔜 ⚙️ 📶 🙅 🕸 📄 ⏮️ 🕸, 🌐 🔘 📏 🎻.

👉, ↗️, 🚫 ⚖ & 👆 🚫🔜 ⚙️ ⚫️ 🏭.

🏭 👆 🔜 ✔️ 1️⃣ 🎛 🔛.

✋️ ⚫️ 🙅 🌌 🎯 🔛 💽-🚄 *️⃣ & ✔️ 👷 🖼:

```Python hl_lines="2  6-38  41-43"
{!../../../docs_src/websockets/tutorial001.py!}
```

## ✍ `websocket`

👆 **FastAPI** 🈸, ✍ `websocket`:

```Python hl_lines="1  46-47"
{!../../../docs_src/websockets/tutorial001.py!}
```

Et nous analysons directement ce contenu YAML, puis nous utilisons à nouveau le même modèle Pydantic pour valider le contenu YAML :

```Python hl_lines="26-33"
{!../../../docs_src/path_operation_advanced_configuration/tutorial007.py!}
```

!!! tip "Astuce"
    Ici, nous réutilisons le même modèle Pydantic.

Here's a small preview of how you could integrate Strawberry with FastAPI:

```Python hl_lines="3  22  25-26"
{!../../../docs_src/graphql/tutorial001.py!}
```

You can learn more about Strawberry in the <a href="https://strawberry.rocks/" class="external-link" target="_blank">Strawberry documentation</a>.

In production you would have one of the options above.

But it's the simplest way to focus on the server-side of WebSockets and have a working example:

```Python hl_lines="2  6-38  41-43"
{!../../../docs_src/websockets/tutorial001.py!}
```

## Create a `websocket`

In your **FastAPI** application, create a `websocket`:

```Python hl_lines="1  46-47"

或者，您可能有其他与 WebSocket 终端通信的方式。

---

但是，在本示例中，我们将使用一个非常简单的HTML文档，其中包含一些JavaScript，全部放在一个长字符串中。

当然，这并不是最优的做法，您不应该在生产环境中使用它。

在生产环境中，您应该选择上述任一选项。

但这是一种专注于 WebSockets 的服务器端并提供一个工作示例的最简单方式：

```Python hl_lines="2  6-38  41-43"
{!../../../docs_src/websockets/tutorial001.py!}
```

## 创建 `websocket`

在您的 **FastAPI** 应用程序中，创建一个 `websocket`：

```Python hl_lines="1  46-47"
{!../../../docs_src/websockets/tutorial001.py!}
```

```Python
q: Union[str, None] = None
```

Ou como em Python 3.10 e versões superiores:

```Python
q: str | None = None
```

Por exemplo:

=== "Python 3.10+"

    ```Python hl_lines="26"
    {!> ../../../docs_src/body_multiple_params/tutorial004_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="27"
    {!> ../../../docs_src/body_multiple_params/tutorial004.py!}
    ```

// travelchannel : 2015-07-02 Lifestyle Domain Holdings, Inc.
travelchannel

// travelers : 2015-03-26 Travelers TLD, LLC
travelers

// travelersinsurance : 2015-03-26 Travelers TLD, LLC
travelersinsurance

// trust : 2014-10-16 Internet Naming Company LLC
trust

// trv : 2015-03-26 Travelers TLD, LLC
trv

// tube : 2015-06-11 Latin American Telecom LLC
tube

    calls still enqueued.
 *  Upgrade: [GraalVM 22][graalvm_22].
 *  Upgrade: [Kotlin 1.7.10][kotlin_1_7_10].


## Version 5.0.0-alpha.10

_2022-06-26_

 *  Fix: Configure the multiplatform artifact (`com.squareup.okhttp3:okhttp:3.x.x`) to depend on the
    JVM artifact (`com.squareup.okhttp3:okhttp-jvm:3.x.x`) for Maven builds. This should work-around