val address = factory.newAddress()
    proxySelector.proxies.add(Proxy.NO_PROXY)
    val routeSelector = newRouteSelector(address)
    proxySelector.assertRequests(address.url.toUri())

    // Only the origin server will be attempted.
    assertThat(routeSelector.hasNext()).isTrue()
    dns[uriHost] = dns.allocate(1)
    val selection = routeSelector.next()

# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

[CORS или "Cross-Origin Resource Sharing"](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) относится к ситуациям, при которых запущенный в браузере фронтенд содержит JavaScript-код, который взаимодействует с бэкендом, находящимся на другом "источнике" ("origin").

## Источник { #origin }

    assertThat(cookie.matches("http://www.example.com".toHttpUrl())).isTrue()
    assertThat(cookie.matches("http://square.com".toHttpUrl())).isFalse()
  }

  /** If no domain is present, match only the origin domain.  */
  @Test fun domainMatchesNoDomain() {
    val cookie = parse(url, "a=b")
    assertThat(cookie!!.matches("http://example.com".toHttpUrl())).isTrue()

# CORS (Обмін ресурсами між різними джерелами) { #cors-cross-origin-resource-sharing }

[CORS або «Cross-Origin Resource Sharing»](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) є ситуація, коли фронтенд, що працює в браузері, містить JavaScript-код, який взаємодіє з бекендом, розташованим в іншому «джерелі» (origin).

## Джерело (Origin) { #origin }

# CORS (교차-출처 리소스 공유) { #cors-cross-origin-resource-sharing }

[CORS 또는 "Cross-Origin Resource Sharing"](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS)란, 브라우저에서 실행되는 프론트엔드에 백엔드와 통신하는 JavaScript 코드가 있고, 백엔드가 프론트엔드와 다른 "출처(origin)"에 있는 상황을 의미합니다.

## 출처 { #origin }

출처란 프로토콜(`http`, `https`), 도메인(`myapp.com`, `localhost`, `localhost.tiangolo.com`), 그리고 포트(`80`, `443`, `8080`)의 조합을 의미합니다.

따라서, 아래는 모두 상이한 출처입니다:

* `http://localhost`

# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

[CORS ou "Cross-Origin Resource Sharing"](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) refere-se às situações em que um frontend rodando em um navegador possui um código JavaScript que se comunica com um backend, e o backend está em uma "origem" diferente do frontend.

## Origem { #origin }

      promisedStreamId: Int,
      requestHeaders: List<Header>,
    ) {
      pushRequestLater(promisedStreamId, requestHeaders)
    }

    override fun alternateService(
      streamId: Int,
      origin: String,
      protocol: ByteString,
      host: String,
      port: Int,
      maxAge: Long,
    ) {
      // TODO: register alternate service.
    }
  }

Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT...

Ancak tarayıcıdaki bir client'ın görebilmesini istediğiniz özel header'larınız varsa, bunları CORS konfigürasyonlarınıza ([CORS (Cross-Origin Resource Sharing)](cors.md)) eklemeniz gerekir. Bunun için, [Starlette'ın CORS dokümanlarında](https://www.starlette.dev/middleware/#corsmiddleware) belgelenen `expose_headers` parametresini kullanın.

///

Но если вы хотите, чтобы клиент в браузере мог видеть ваши пользовательские заголовки, необходимо добавить их в настройки CORS ([CORS (Cross-Origin Resource Sharing)](cors.md)), используя параметр `expose_headers`, описанный в [документации по CORS Starlette](https://www.starlette.dev/middleware/#corsmiddleware).

///

/// note | Технические детали