/**
     * Context name for directory lease request
     */
    public static final String NAME_DIRECTORY_REQUEST = "DLse";

    /**
     * Context name for directory lease response
     */
    public static final String NAME_DIRECTORY_RESPONSE = "DLse";

    private static final byte[] CONTEXT_NAME_BYTES = NAME_DIRECTORY_REQUEST.getBytes();

    /**

///

次に、アプリを渡して `AsyncClient` を作成し、`await` を使って非同期リクエストを送信できます。

{* ../../docs_src/async_tests/app_a_py310/test_main.py hl[9:12] *}

これは次と同等です:

```Python
response = client.get('/')
```

...これまでは `TestClient` でリクエストを送っていました。

/// tip | 豆知識

新しい `AsyncClient` では async/await を使っている点に注意してください。リクエストは非同期です。

///

/// warning | 注意

```Python hl_lines="2"
@app.get('/')
def results():
    results = some_library()
    return results
```

---

Se sua aplicação (de alguma forma) não tem que se comunicar com nada mais e esperar que o respondam, use `async def`, mesmo que você não precise usar `await` dentro dela.

---

Se você simplesmente não sabe, use apenas `def`.

---

        // Test throwing and catching the exception with cause
        String expectedMessage = "SAML assertion validation failed";
        Exception expectedCause = new IllegalStateException("Invalid SAML response");

        try {
            throw new SsoProcessException(expectedMessage, expectedCause);
        } catch (SsoProcessException e) {
            assertEquals(expectedMessage, e.getMessage());

		if rec.Code != testCase.expectedRespStatus {
			t.Errorf("Test %d: %s: Expected the response status to be `%d`, but instead found `%d`", i+1, instanceType, testCase.expectedRespStatus, rec.Code)
		}

		// Verify response the V2 signed HTTP request.
		// initialize HTTP NewRecorder, this records any mutations to response writer inside the handler.
		recV2 := httptest.NewRecorder()

	public final fun headers ()Lokhttp3/Headers;
	public final fun method ()Ljava/lang/String;
	public final fun path ()Ljava/lang/String;
	public final fun response ()Lokhttp3/mockwebserver/MockResponse;
}

public final class okhttp3/mockwebserver/QueueDispatcher : okhttp3/mockwebserver/Dispatcher {
	public fun <init> ()V

    // Cache implementors may want to catch it but should not need to be able to throw it.
    UnsupportedLoadingOperationException() {}
  }

  /**
   * Thrown to indicate that an invalid response was returned from a call to {@link CacheLoader}.
   *
   * @since 11.0
   */
  public static final class InvalidCacheLoadException extends RuntimeException {
    public InvalidCacheLoadException(String message) {

        setField(session, "digest", null);
        when(transport.isSigningEnforced()).thenReturn(true);
        assertTrue(session.isSignatureSetupRequired());

        // Case 3: not enforced, rely on negotiate response flag
        when(transport.isSigningEnforced()).thenReturn(false);
        jcifs.internal.SmbNegotiationResponse nego = mock(jcifs.internal.SmbNegotiationResponse.class);

				return
			}
			f.ServeHTTP(w, r)
		case <-r.Context().Done():
			globalHTTPStats.addRequestsInQueue(-1)
			// When the client disconnects before getting the S3 handler
			// status code response, set the status code to 499 so this request
			// will be properly audited and traced.
			w.WriteHeader(499)
		default:
			globalHTTPStats.addRequestsInQueue(-1)
			if contextCanceled(ctx) {
				w.WriteHeader(499)

    Note over Server: Server interprets headers<br/>(if --forwarded-allow-ips is set)

    Server->>Proxy: HTTP Response<br/>with correct HTTPS URLs

    Proxy->>Client: HTTPS Response
```

**代理**会拦截原始客户端请求，并在将请求传递给**应用服务器**之前，添加特殊的*转发*请求头（`X-Forwarded-*`）。

这些请求头保留了原始请求中否则会丢失的信息：

- X-Forwarded-For：原始客户端的 IP 地址
- X-Forwarded-Proto：原始协议（`https`）