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docs/ru/docs/advanced/response-headers.md

**FastAPI** использует этот *временный* ответ, чтобы извлечь HTTP-заголовки (а также cookie и статус-код) и поместит их в финальный HTTP-ответ, который содержит возвращённое вами значение, отфильтрованное согласно `response_model`.

Вы также можете объявлять параметр `Response` в зависимостях и устанавливать в них заголовки (и cookie).

## Вернуть `Response` напрямую { #return-a-response-directly }

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github.com/tiangolo/fastapi

docs/tr/docs/features.md

* API anahtarları:
    * Header’larda.
    * Query parametrelerinde.
    * Cookie’lerde vb.

Buna ek olarak Starlette’in tüm güvenlik özellikleri (**session cookies** dâhil).

Tümü, sistemleriniz, veri depolarınız, ilişkisel ve NoSQL veritabanlarınız vb. ile kolayca entegre edilebilen, yeniden kullanılabilir araçlar ve bileşenler olarak inşa edilmiştir.

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github.com/tiangolo/fastapi

docs_src/dependencies/tutorial005_py310.py

from fastapi import Cookie, Depends, FastAPI

app = FastAPI()


def query_extractor(q: str | None = None):
    return q


def query_or_cookie_extractor(
    q: str = Depends(query_extractor), last_query: str | None = Cookie(default=None)
):
    if not q:
        return last_query
    return q


@app.get("/items/")
async def read_query(query_or_default: str = Depends(query_or_cookie_extractor)):

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github.com/square/okhttp

okhttp/src/jvmTest/kotlin/okhttp3/CallLimitsTest.kt

  @Test
  fun largeResponseHeadersList() {
    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("Set-Cookie", "a=${"A".repeat(255 * 1024)}")
        .addHeader("Set-Cookie", "b=${"B".repeat(1 * 1024)}")
        .body("I'm not even supposed to be here today.")
        .build(),
    )
    val call = client.newCall(Request(url = server.url("/")))

Created: Fri Apr 03 11:42:14 GMT 2026

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github.com/tiangolo/fastapi

docs_src/dependencies/tutorial005_an_py310.py

from typing import Annotated

from fastapi import Cookie, Depends, FastAPI

app = FastAPI()


def query_extractor(q: str | None = None):
    return q


def query_or_cookie_extractor(
    q: Annotated[str, Depends(query_extractor)],
    last_query: Annotated[str | None, Cookie()] = None,
):
    if not q:
        return last_query
    return q


@app.get("/items/")
async def read_query(

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github.com/golang/go

doc/godebug.md

of cookies that net/http will accept when parsing HTTP headers. If the number of
cookie in a header exceeds the number set in `httpcookiemaxnum`, cookie parsing
will fail early. The default value is `httpcookiemaxnum=3000`. Setting
`httpcookiemaxnum=0` will allow the cookie parsing to accept an indefinite
number of cookies. To avoid denial of service attacks, this setting and default

Created: Tue Apr 07 11:13:11 GMT 2026

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github.com/tiangolo/fastapi

docs/ru/docs/advanced/response-change-status-code.md

Для таких случаев вы можете использовать параметр `Response`.

## Использование параметра `Response` { #use-a-response-parameter }

Вы можете объявить параметр типа `Response` в вашей *функции обработки пути* (как и для cookies и HTTP-заголовков).

И затем вы можете установить `status_code` в этом *временном* объекте ответа.

{* ../../docs_src/response_change_status_code/tutorial001_py310.py hl[1,9,12] *}

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial002_an_py310.py

from typing import Annotated

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

docs_src/websockets_/tutorial002_py310.py

from fastapi import (
    Cookie,
    Depends,
    FastAPI,
    Query,
    WebSocket,
    WebSocketException,
    status,
)
from fastapi.responses import HTMLResponse

app = FastAPI()

html = """
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
    </head>
    <body>
        <h1>WebSocket Chat</h1>
        <form action="" onsubmit="sendMessage(event)">

Created: Sun Apr 05 07:19:11 GMT 2026

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github.com/tiangolo/fastapi

fastapi/init.py

from .exceptions import HTTPException as HTTPException
from .exceptions import WebSocketException as WebSocketException
from .param_functions import Body as Body
from .param_functions import Cookie as Cookie
from .param_functions import Depends as Depends
from .param_functions import File as File
from .param_functions import Form as Form
from .param_functions import Header as Header
from .param_functions import Path as Path

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