```

</div>

在瀏覽器開啟 [http://127.0.0.1:8000](http://127.0.0.1:8000)。

在那裡你可以設定：

* "Item ID"，用於路徑。
* "Token"，作為查詢參數。

/// tip

注意查詢參數 `token` 會由一個依賴處理。

///

之後你就能連線到 WebSocket，並開始收發訊息：

<img src="/img/tutorial/websockets/image05.png">

## 處理斷線與多個用戶端 { #handling-disconnections-and-multiple-clients }

                "%ge.gradle.org.access.key%;%develocity.grdev.net.access.key%;%develocity-ext-hetzner.grdev.net.access.key%",
            )
            password("env.ORG_GRADLE_PROJECT_botGradleGitHubToken", "%github.bot-gradle.token%")
        }

        features {
            // https://www.jetbrains.com/help/teamcity/shared-resources.html#Viewing+Shared+Resources+Usage

///

### What is "Mounting" { #what-is-mounting }

"Mounting" means adding a complete "independent" application in a specific path, that then takes care of handling all the sub-paths.

   * Builder.buildKeepingLast(). The same Builder might be called with buildKeepingLast() and then
   * buildOrThrow(), or vice versa. So in particular, if we modify alternatingKeysAndValues to
   * eliminate duplicate keys (for buildKeepingLast()) then we have to ensure that a later call to
   * buildOrThrow() will still throw as if the duplicates had not been eliminated. And the exception

	"io"
	"io/fs"
	"maps"
	"path"
	"slices"
	"strings"
	"time"
)

// Writer provides sequential writing of a tar archive.
// [Writer.WriteHeader] begins a new file with the provided [Header],
// and then Writer can be treated as an io.Writer to supply that file's data.
type Writer struct {
	w    io.Writer
	pad  int64      // Amount of padding to write after current file entry
	curr fileWriter // Writer for current file entry

  // Run Enums.getIfPresent on that other TestEnum and then return a WeakReference containing the
  // new ClassLoader. If Enums.getIfPresent does caching that prevents the shadow TestEnum
  // (and therefore its ClassLoader) from being unloaded, then this WeakReference will never be
  // cleared.
  @J2ktIncompatible

# 현재 사용자 가져오기 { #get-current-user }

이전 장에서 (의존성 주입 시스템을 기반으로 한) 보안 시스템은 *경로 처리 함수*에 `str`로 `token`을 제공했습니다:

{* ../../docs_src/security/tutorial001_an_py310.py hl[12] *}

하지만 이는 여전히 그다지 유용하지 않습니다.

현재 사용자를 제공하도록 해봅시다.

## 사용자 모델 생성하기 { #create-a-user-model }

먼저 Pydantic 사용자 모델을 만들어 봅시다.

Pydantic을 사용해 본문을 선언하는 것과 같은 방식으로, 다른 곳에서도 어디서든 사용할 수 있습니다:

{* ../../docs_src/security/tutorial002_an_py310.py hl[5,12:6] *}

### 1. Fetch the root identity

}

// A Header represents a single header in a tar archive.
// Some fields may not be populated.
//
// For forward compatibility, users that retrieve a Header from Reader.Next,
// mutate it in some ways, and then pass it back to Writer.WriteHeader
// should do so by creating a new Header and copying the fields
// that they are interested in preserving.
type Header struct {
	// Typeflag is the type of header entry.

/**
 * Exception thrown when SSO (Single Sign-On) login operations fail.
 *
 * This exception is used to indicate various SSO authentication failures
 * including configuration errors, authentication token validation failures,
 * communication issues with SSO providers, and other SSO-related problems.
 */
public class SsoLoginException extends FessSystemException {

    /** Serial version UID for serialization compatibility. */