certificate.

The trusted roots don't need to be the same for client and server when using client authentication.
Clients might rely on the platform certificates and servers might use a private
organization-specific certificate authority.

By default `HeldCertificate` instances expire after 24 hours. Use `duration()` to adjust.

By default server certificates need to identify which hostnames they're trusted for. You may add as

## 技术细节 { #technical-details }

FastAPI 开箱即用地实现了一些 SSE 的最佳实践。

- 当 15 秒内没有任何消息时，发送一个**保活 `ping` 注释**，以防某些代理关闭连接，正如 [HTML 规范：Server-Sent Events](https://html.spec.whatwg.org/multipage/server-sent-events.html#authoring-notes) 中建议的那样。
- 设置 `Cache-Control: no-cache` 响应头，**防止缓存**流。
- 设置特殊响应头 `X-Accel-Buffering: no`，以**防止**某些代理（如 Nginx）**缓冲**。

### 10.1 Witness Authentication
```java
public class WitnessSecurityManager {
    public void authenticateWitnessService(InetAddress witnessServer) throws SecurityException {
        // Verify witness service is authorized
        if (!isAuthorizedWitnessServer(witnessServer)) {
            throw new SecurityException("Unauthorized witness server: " + witnessServer);
        }
    }
    

            assertEquals("smb1://", new SmbFile("smb1://server/").getParent());
            // Test parent of root - currently throws NPE due to bug in SmbFile.getParent()
            // when authority is null. This is a known issue in the legacy implementation.
            // For now, we expect the NPE to maintain backward compatibility
            assertThrows(NullPointerException.class, () -> new SmbFile("smb1://").getParent());

Execute o servidor e vá para a documentação: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Você verá a interface de usuário assim:

<img src="/img/tutorial/security/image07.png">

Autorize a aplicação da mesma maneira que antes.

Usando as credenciais:

Username: `johndoe`
Password: `secret`

/// check | Verifique

FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition,...

    val request = server.takeRequest()
    assertThat(request.requestLine).isEqualTo("GET /foo HTTP/2")
    assertThat(request.headers[":scheme"]).isEqualTo(scheme)
    assertThat(request.headers[":authority"]).isEqualTo("${server.hostName}:${server.port}")
  }

  @Test
  fun get204Response() {
    val responseWithoutBody =
      MockResponse
        .Builder()
        .status("HTTP/1.1 204")

 *     sha256/klO23nT2ehFDXCfx3eHTDRESMz3asj1muO+4aIdjiuY=: CN=COMODO RSA Secure Server CA
 *     sha256/grX4Ta9HpZx6tSHkmCrvpApTQGo67CYDnvprLg5yRME=: CN=COMODO RSA Certification Authority
 *     sha256/lCppFqbkrlJ3EcVFAkeip0+44VaoJUymbnOaEUk7tEU=: CN=AddTrust External CA Root
 * Pinned certificates for publicobject.com:
 *     sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=

128 bit numbers which are intended to have a high likelihood of uniqueness over space and time and are computationally difficult to guess. They are globally unique identifiers which can be locally generated without contacting a global registration authority. UUIDs are intended as unique identifiers for both mass tagging objects with an extremely short lifetime and to reliably identifying very persistent objects across a network.

When you PUT an object in a versioning-enabled bucket, the noncurrent...

   *
   * @param streamId client-initiated stream ID.  Must be an odd number.
   * @param promisedStreamId server-initiated stream ID.  Must be an even number.
   * @param requestHeaders minimally includes `:method`, `:scheme`, `:authority`, and `:path`.
   */
  @Throws(IOException::class)
  fun pushPromise(
    streamId: Int,
    promisedStreamId: Int,
    requestHeaders: List<Header>,
  ) {
    withLock {