* **RealConnection** is the socket and streams of an HTTP/1 or HTTP/2 connection. These are created on demand to fulfill HTTP requests. They may be reused for many HTTP request/response exchanges. Their lifetime is typically shorter than a connection pool.

 * **Exchange** carries a single HTTP request/response pair.

import java.net.Socket
import java.net.UnknownServiceException
import okhttp3.Address
import okhttp3.ConnectionSpec
import okhttp3.HttpUrl
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route
import okhttp3.internal.USER_AGENT
import okhttp3.internal.canReuseConnectionFor
import okhttp3.internal.closeQuietly
import okhttp3.internal.concurrent.TaskRunner

Bu bakış açısını (external geliştiricinin bakış açısını) geçici olarak benimsemek; parametreleri nereye koyacağınızı, body için Pydantic modelini, response için modelini vb. external API tarafında nasıl tasarlayacağınızı daha net hale getirebilir.

///

### Bir callback `APIRouter` oluşturun { #create-a-callback-apirouter }

        final HtmlResponse response = HtmlResponse.fromForwardPath("/");
        assertEquals(response, systemHelper.getRedirectResponseToLogin(response));
    }

    @Test
    public void test_getRedirectResponseToRoot() {
        final HtmlResponse response = HtmlResponse.fromForwardPath("/");
        assertEquals(response, systemHelper.getRedirectResponseToRoot(response));
    }

    @Test

    writeOutputFile(importResults)
  }

  private suspend fun updateLocalFile() =
    withContext(Dispatchers.IO) {
      client.newCall(request).executeAsync().use { response ->
        fileSystem.sink(publicSuffixListDotDat).buffer().use { sink ->
          sink.writeAll(response.body.source())
        }
      }
    }

  private suspend fun readImportResults(): ImportResults =
    withContext(Dispatchers.IO) {

* `expose_headers` - Tarayıcının erişebilmesi gereken response header’larını belirtir. Varsayılanı `[]`.
* `max_age` - Tarayıcıların CORS response’larını cache’lemesi için saniye cinsinden azami süreyi ayarlar. Varsayılanı `600`.

Middleware iki özel HTTP request türüne yanıt verir...

Erstellen Sie eine Variable für das Ablaufdatum des Tokens.

Definieren Sie ein Pydantic-Modell, das im Token-Endpunkt für die <abbr title="Response – Antwort: Daten, die der Server zum anfragenden Client zurücksendet">Response</abbr> verwendet wird.

Erstellen Sie eine Hilfsfunktion, um einen neuen Zugriffstoken zu generieren.

{* ../../docs_src/security/tutorial004_an_py310.py hl[4,7,13:15,29:31,82:90] *}

    context.close()
    browser.close()


process = subprocess.Popen(
    ["fastapi", "run", "docs_src/header_param_models/tutorial001.py"]
)
try:
    for _ in range(3):
        try:
            response = httpx.get("http://localhost:8000/docs")
        except httpx.ConnectError:
            time.sleep(1)
            break
    with sync_playwright() as playwright:
        run(playwright)
finally:

    context.close()
    browser.close()


process = subprocess.Popen(
    ["fastapi", "run", "docs_src/request_form_models/tutorial001.py"]
)
try:
    for _ in range(3):
        try:
            response = httpx.get("http://localhost:8000/docs")
        except httpx.ConnectError:
            time.sleep(1)
            break
    with sync_playwright() as playwright:
        run(playwright)
finally:

FastAPI `0.122.0` sürümünden itibaren ise daha uygun olan HTTP durum kodu `401 Unauthorized` kullanılmakta ve HTTP spesifikasyonlarına uygun olarak response içinde anlamlı bir `WWW-Authenticate` header'ı döndürülmektedir, [RFC 7235](https://datatracker.ietf.org/doc/html/rfc7235#section-3.1), [RFC 9110](https://datatracker.ietf.org/doc/html/rfc9110#name-401-unauthorized).