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docs/pt/docs/advanced/security/http-basic-auth.md

Para os casos mais simples, você pode utilizar o HTTP Basic Auth.

No HTTP Basic Auth, a aplicação espera um cabeçalho que contém um usuário e uma senha.

Caso ela não receba, ela retorna um erro HTTP 401 "Unauthorized".

E retorna um cabeçalho `WWW-Authenticate` com o valor `Basic`, e um parâmetro opcional `realm`.

Isso sinaliza ao navegador para mostrar o prompt integrado para um usuário e senha.

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github.com/tiangolo/fastapi

tests/test_tutorial/test_security/test_tutorial002.py

    client = TestClient(mod.app)
    return client


def test_no_token(client: TestClient):
    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_token(client: TestClient):

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github.com/square/okhttp

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

    server.enqueue(mockResponse)
    server.enqueue(mockResponse)
    val response = getResponse(newRequest("/"))
    assertThat(response.code).isEqualTo(401)
    assertThat(response.code).isEqualTo(401)
    assertThat(response.code).isEqualTo(401)
    assertThat(server.requestCount).isEqualTo(1)
    response.body.close()
  }

  @Test
  fun nonHexChunkSize() {
    server.enqueue(

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github.com/tiangolo/fastapi

docs/en/docs/advanced/security/http-basic-auth.md

For the simplest cases, you can use HTTP Basic Auth.

In HTTP Basic Auth, the application expects a header that contains a username and a password.

If it doesn't receive it, it returns an HTTP 401 "Unauthorized" error.

And returns a header `WWW-Authenticate` with a value of `Basic`, and an optional `realm` parameter.

That tells the browser to show the integrated prompt for a username and password.

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github.com/codelibs/jcifs

src/test/java/jcifs/http/NetworkExplorerTest.java

        verify(servletConfig).getInitParameter("jcifs.smb.client.domain");
        verify(servletConfig).getInitParameter("jcifs.http.enableBasic");
    }

    /**
     * Test doGet with no authentication - should return 401
     */
    @Test
    void testDoGet_NoAuthentication() throws Exception {
        initializeNetworkExplorer(false, "jCIFS");

        when(request.getHeader("Authorization")).thenReturn(null);

Registered: Sat Dec 20 13:44:44 UTC 2025

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github.com/codelibs/jcifs

src/test/java/jcifs/http/NtlmServletTest.java

        assertDoesNotThrow(() -> ntlmServlet.init(servletConfig));
    }

    /**
     * Test the service method when no Authorization header is present and no session exists.
     * Expects a 401 Unauthorized response with NTLM and Basic authentication challenges.
     * @throws ServletException
     * @throws IOException
     */
    @Test

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github.com/apache/maven

impl/maven-core/src/test/java/org/apache/maven/lifecycle/internal/stub/AboutTheStubs.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance

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github.com/tiangolo/fastapi

docs/de/docs/tutorial/security/simple-oauth2.md

/// info | Info

Der zusätzliche Header `WWW-Authenticate` mit dem Wert `Bearer`, den wir hier zurückgeben, ist ebenfalls Teil der Spezifikation.

Jeder HTTP-(Fehler-)Statuscode 401 „UNAUTHORIZED“ soll auch einen `WWW-Authenticate`-Header zurückgeben.

Im Fall von Bearer-Tokens (in unserem Fall) sollte der Wert dieses Headers `Bearer` lauten.

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github.com/tiangolo/fastapi

docs/en/docs/tutorial/security/simple-oauth2.md

/// info

The additional header `WWW-Authenticate` with value `Bearer` we are returning here is also part of the spec.

Any HTTP (error) status code 401 "UNAUTHORIZED" is supposed to also return a `WWW-Authenticate` header.

In the case of bearer tokens (our case), the value of that header should be `Bearer`.

You can actually skip that extra header and it would still work.

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github.com/tiangolo/fastapi

docs/es/docs/tutorial/security/simple-oauth2.md

/// info | Información

El header adicional `WWW-Authenticate` con el valor `Bearer` que estamos devolviendo aquí también es parte de la especificación.

Cualquier código de estado HTTP (error) 401 "UNAUTHORIZED" se supone que también debe devolver un header `WWW-Authenticate`.

En el caso de tokens bearer (nuestro caso), el valor de ese header debe ser `Bearer`.

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