Headers
        .Builder()
        .addUnsafeNonAscii("héader1", "value1")
        .build()
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0xe9 at 1 in header name: héader1")
    }
  }

  @Test fun addUnsafeNonAsciiAcceptsUnicodeValue() {
    val headers =
      Headers
        .Builder()
        .addUnsafeNonAscii("header1", "valué1")
        .build()

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

## Заборонити додаткові заголовки { #forbid-extra-headers }

У деяких особливих випадках (ймовірно, не дуже поширених) ви можете захотіти **обмежити** заголовки, які хочете отримати.

Ви можете використати конфігурацію моделі Pydantic, щоб `заборонити` будь-які `додаткові` поля:

    peer.acceptFrame() // ACK
    peer.acceptFrame() // SYN_STREAM
    peer.sendFrame().headers(false, 3, headerEntries("a", "android"))
    val expectedRequestHeaders =
      listOf(
        Header(Header.TARGET_METHOD, "GET"),
        Header(Header.TARGET_SCHEME, "https"),
        Header(Header.TARGET_AUTHORITY, "squareup.com"),
        Header(Header.TARGET_PATH, "/cached"),
      )

                                    "Header One": {
                                        "summary": "Header One Summary",
                                        "description": "Header One Description",
                                        "value": "header1",
                                    },
                                    "Header Two": {"value": "header2"},
                                },

    val derReader = DerReader(buffer)

    derReader.read("test") { header ->
      assertThat(header.tag).isEqualTo(7L)
      assertThat(header.tagClass).isEqualTo(DerHeader.TAG_CLASS_APPLICATION)
      assertThat(header.length).isEqualTo(7L)

      derReader.read("test") { header2 ->
        assertThat(header2.tag).isEqualTo(3L)
        assertThat(header2.tagClass).isEqualTo(DerHeader.TAG_CLASS_APPLICATION)

/// note | Technische Details

Die Proxy-Header sind:

* [X-Forwarded-For](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For)
* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)

Shinsuke Sugaya <******@****.***> 1771833824 +0900

* `content` - Bir `str` veya `bytes`.
* `status_code` - Bir `int` HTTP status code.
* `headers` - String’lerden oluşan bir `dict`.
* `media_type` - Media type’ı veren bir `str`. Örn. `"text/html"`.

FastAPI (aslında Starlette) otomatik olarak bir Content-Length header’ı ekler. Ayrıca `media_type`’a göre bir Content-Type header’ı ekler ve text türleri için sona bir charset ekler.

* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

### Proxy-Forwarded-Header aktivieren { #enable-proxy-forwarded-headers }

      )

    fun http2HeadersList(request: Request): List<Header> {
      val headers = request.headers
      val result = ArrayList<Header>(headers.size + 4)
      result.add(Header(TARGET_METHOD, request.method))
      result.add(Header(TARGET_PATH, RequestLine.requestPath(request.url)))
      val host = request.header("Host")
      if (host != null) {
        result.add(Header(TARGET_AUTHORITY, host)) // Optional.
      }