def fetch_credentials():
            # HTTP headers are case insensitive filter out
            # all duplicate headers and pick one.
            headers = {}
            headers['content-type'] = 'application/x-www-form-urlencoded'
            headers['authorization'] = urllib3.make_headers(
                basic_auth='%s:%s' % (self.cid, self.csec))['authorization']

            response = self._http.urlopen('POST', self.idp_ep,

 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

FastAPI 버전 `0.122.0`부터는 더 적절한 HTTP 상태 코드 `401 Unauthorized`를 사용하며, HTTP 명세인 [RFC 7235](https://datatracker.ietf.org/doc/html/rfc7235#section-3.1), [RFC 9110](https://datatracker.ietf.org/doc/html/rfc9110#name-401-unauthorized)를 따라 응답에 합리적인 `WWW-Authenticate` 헤더를 반환합니다.

하지만 어떤 이유로든 클라이언트가 이전 동작에 의존하고 있다면, 보안 클래스에서 `make_not_authenticated_error` 메서드를 오버라이드하여 이전 동작으로 되돌릴 수 있습니다.

예를 들어, 기본값인 `401 Unauthorized` 오류 대신 `403 Forbidden` 오류를 반환하는 `HTTPBearer`의 서브클래스를 만들 수 있습니다:

    user = fake_decode_token(token)
    if not user:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Not authenticated",
            headers={"WWW-Authenticate": "Bearer"},
        )
    return user


async def get_current_active_user(
    current_user: Annotated[User, Depends(get_current_user)],
):
    if current_user.disabled:

def test_security_http_base_no_credentials():
    response = client.get("/users/me")
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}
    assert response.headers["WWW-Authenticate"] == "Other"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {

                ntlm = (NtlmPasswordAuthentication) ssn.getAttribute("npa-" + server);
            }
            if (ntlm == null) {
                resp.setHeader("WWW-Authenticate", "NTLM");
                if (offerBasic) {
                    resp.addHeader("WWW-Authenticate", "Basic realm=\"" + realm + "\"");
                }
                resp.setHeader("Connection", "close");

 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

http::b@www.example.com  s:http pass:b h:www.example.com p:/
http:/:b@www.example.com  s:http pass:b h:www.example.com p:/
http://:b@www.example.com  s:http pass:b h:www.example.com p:/
http:/:@/www.example.com
http://user@/www.example.com
http:@/www.example.com
http:/@/www.example.com
http://@/www.example.com
https:@/www.example.com
http:a:b@/www.example.com
http:/a:b@/www.example.com
http://a:b@/www.example.com

    response = client.get("/users/me")
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}
    assert response.headers["WWW-Authenticate"] == "Bearer"


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == snapshot(
        {

# HTTP 基础授权 { #http-basic-auth }

最简单的用例是使用 HTTP 基础授权（HTTP Basic Auth）。

在 HTTP 基础授权中，应用需要请求头包含用户名与密码。

如果没有接收到 HTTP 基础授权，就返回 HTTP 401 `"Unauthorized"` 错误。

并返回响应头 `WWW-Authenticate`，其值为 `Basic`，以及可选的 `realm` 参数。

HTTP 基础授权让浏览器显示内置的用户名与密码提示。

输入用户名与密码后，浏览器会把它们自动发送至请求头。

## 简单的 HTTP 基础授权 { #simple-http-basic-auth }

* 导入 `HTTPBasic` 与 `HTTPBasicCredentials`
* 使用 `HTTPBasic` 创建**安全方案**
* 在*路径操作*的依赖项中使用 `security`