# Header 参数

定义 `Header` 参数的方式与定义 `Query`、`Path`、`Cookie` 参数相同。

## 导入 `Header`

首先，导入 `Header`：

=== "Python 3.10+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="3"

# Header-параметры

Вы можете определить параметры заголовка таким же образом, как вы определяете параметры `Query`, `Path` и `Cookie`.

## Импорт `Header`

Сперва импортируйте `Header`:

=== "Python 3.10+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="3"
    {!> ../../../docs_src/header_params/tutorial001_an_py39.py!}
    ```

## `Header` 임포트

먼저 `Header`를 임포트합니다:

```Python hl_lines="3"
{!../../../docs_src/header_params/tutorial001.py!}
```

## `Header` 매개변수 선언

`Path`, `Query` 그리고 `Cookie`를 사용한 동일한 구조를 이용하여 헤더 매개변수를 선언합니다.

첫 번째 값은 기본값이며, 추가 검증이나 어노테이션 매개변수 모두 전달할 수 있습니다:

```Python hl_lines="9"
{!../../../docs_src/header_params/tutorial001.py!}
```

!!! note "기술 세부사항"

/**
 * Performs either **preemptive** authentication before connecting to a proxy server, or
 * **reactive** authentication after receiving a challenge from either an origin web server or proxy
 * server.
 *
 * ## Preemptive Authentication
 *
 * To make HTTPS calls using an HTTP proxy server OkHttp must first negotiate a connection with
 * the proxy. This proxy connection is called a "TLS Tunnel" and is specified by

  val platform = PlatformRule()

  private lateinit var server: MockWebServer

  @BeforeEach
  fun setUp(server: MockWebServer) {
    this.server = server
  }

  @Test
  fun clientSendsServerNameAndServerReceivesIt() {
    // java.net.ConnectException: Connection refused
    platform.assumeNotConscrypt()

    val handshakeCertificates = localhost()
    server.useHttps(handshakeCertificates.sslSocketFactory())

 */
internal interface DerAdapter<T> {
  /** Returns true if this adapter can read [header] in a choice. */
  fun matches(header: DerHeader): Boolean

  /**
   * Returns a value from this adapter.
   *
   * This must always return a value, though it doesn't necessarily need to consume data from
   * [reader]. For example, if the reader's peeked tag isn't readable by this adapter, it may return
   * a default value.
   *

        if (truncated) {
          socket.close()
        }
      } else {
        // read a frame
        val inFrame = InFrame(i, reader)
        reader.nextFrame(false, inFrame)
        inFrames.add(inFrame)
      }
    }
  }

  fun openSocket(): Socket = Socket("localhost", port)

  @Synchronized override fun close() {

export MINIO_IDENTITY_OPENID_CLIENT_ID="843351d4-1080-11ea-aa20-271ecba3924a"
minio server /mnt/data
```

Assuming that MinIO server is configured to support STS API by following the doc [MinIO STS Quickstart Guide](https://min.io/docs/minio/linux/developers/security-token-service.html), execute the following command to temporary credentials from MinIO server.

```

  // NOTE: The API server's TokenReview endpoint will validate the
  // BoundObjectRef, but other audiences may not. Keep ExpirationSeconds
  // small if you want prompt revocation.
  // +optional
  optional BoundObjectReference boundObjectRef = 3;
}

// TokenRequestStatus is the result of a token request.
message TokenRequestStatus {
  // Token is the opaque bearer token.
  optional string token = 1;

      HttpRequest.newBuilder(server.url("/").toUri())
        .header("Accept", "text/plain")
        .build()

    val response = httpClient.send(request, BodyHandlers.ofString())
    assertThat(response.statusCode()).isEqualTo(200)
    assertThat(response.body()).isEqualTo("hello, Java HTTP Client")

    val recorded = server.takeRequest()
    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")