}

    @Test
    @DisplayName("isDisconnected / isFailed reflect socket and state")
    void connectionStateChecks() throws Exception {
        // Arrange: simulate connected state and open socket
        setField(transport, "state", 3); // connected
        Socket s = mock(Socket.class);
        when(s.isClosed()).thenReturn(false);
        setField(transport, "socket", s);

        // Act & Assert

```JSON
{
  "username": "johndoe",
  "email": "******@****.***",
  "full_name": "John Doe",
  "disabled": false
}
```

<img src="/img/tutorial/security/image09.png">

If you open the developer tools, you could see how the data sent only includes the token, the password is only sent in the first request to authenticate the user and get that access token, but not afterwards:

这让你可以轻松生成最新的**文档**、多语言的客户端库（<abbr title="Software Development Kits - 软件开发工具包">**SDKs**</abbr>），以及与代码保持同步的**测试**或**自动化工作流**。

本指南将带你为 FastAPI 后端生成一个 **TypeScript SDK**。

## 开源 SDK 生成器 { #open-source-sdk-generators }

一个功能多样的选择是 [OpenAPI Generator](https://openapi-generator.tech/)，它支持**多种编程语言**，可以根据你的 OpenAPI 规范生成 SDK。

对于 **TypeScript 客户端**，[Hey API](https://heyapi.dev/) 是为 TypeScript 生态打造的专用方案，提供优化的使用体验。

pkg os, method (*Root) Lstat(string) (fs.FileInfo, error) #67002
pkg os, method (*Root) Mkdir(string, fs.FileMode) error #67002
pkg os, method (*Root) Name() string #67002
pkg os, method (*Root) Open(string) (*File, error) #67002
pkg os, method (*Root) OpenFile(string, int, fs.FileMode) (*File, error) #67002
pkg os, method (*Root) OpenRoot(string) (*Root, error) #67002
pkg os, method (*Root) Remove(string) error #67002

    // - Can cache directory enumeration results
    // - Can cache file existence queries
    // - Can cache basic file attributes
    
    // HANDLE_CACHING for directories means:
    // - Can keep directory handle open
    // - Can cache subdirectory handles
    
    // WRITE_CACHING for directories means:
    // - Can cache file creation/deletion notifications
    // - Can perform optimistic file operations
    

<div class="termy">

```console
$ fastapi dev

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

And open the docs at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

You will see the automatic API docs, including the paths from all the submodules, using the correct paths (and prefixes) and the correct tags:

這讓你能輕鬆產生最新的**文件**、多語言的用戶端程式庫（<abbr title="Software Development Kits - 軟體開發套件">**SDKs**</abbr>），以及與程式碼保持同步的**測試**或**自動化工作流程**。

在本指南中，你將學會如何為你的 FastAPI 後端產生 **TypeScript SDK**。

## 開源 SDK 產生器 { #open-source-sdk-generators }

其中一個相當萬用的選擇是 [OpenAPI Generator](https://openapi-generator.tech/)，它支援**多種程式語言**，並能從你的 OpenAPI 規格產生 SDK。

針對 **TypeScript 用戶端**，[Hey API](https://heyapi.dev/) 是專門打造的解決方案，為 TypeScript 生態系提供最佳化的體驗。

# 기능 { #features }

## FastAPI의 기능 { #fastapi-features }

**FastAPI**는 다음과 같은 기능을 제공합니다:

### 개방형 표준을 기반으로 { #based-on-open-standards }

* [**OpenAPI**](https://github.com/OAI/OpenAPI-Specification): <dfn title="또한 다음으로도 불림: 엔드포인트, 라우트">경로</dfn> <dfn title="HTTP 메소드(POST, GET, PUT, DELETE 등)로도 알려짐">처리</dfn>, 매개변수, 요청 본문, 보안 등의 선언을 포함하여 API를 생성합니다.
* [**JSON Schema**](https://json-schema.org/)를 사용한 자동 데이터 모델 문서화(OpenAPI 자체가 JSON Schema를 기반으로 하기 때문입니다).

			lchown(path, uid, gid, callback) { callback(enosys()); },
			link(path, link, callback) { callback(enosys()); },
			lstat(path, callback) { callback(enosys()); },
			mkdir(path, perm, callback) { callback(enosys()); },
			open(path, flags, mode, callback) { callback(enosys()); },
			read(fd, buffer, offset, length, position, callback) { callback(enosys()); },
			readdir(path, callback) { callback(enosys()); },

==== Distribution

By default a node is started with the zip distribution.
In order to start with a different distribution use the `-Drun.distribution` argument.

To for example start the open source distribution:

-------------------------------------
./gradlew run -Drun.distribution=oss
-------------------------------------

==== License type

By default a node is started with the `basic` license type.