F401 - Code Search

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/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/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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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/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);

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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/tiangolo/fastapi

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

/// info | Дополнительная информация
Дополнительный HTTP-заголовок `WWW-Authenticate` со значением `Bearer`, который мы здесь возвращаем, также является частью спецификации.

Любой HTTP статус-код 401 "UNAUTHORIZED" должен также возвращать заголовок `WWW-Authenticate`.

В случае с bearer-токенами (наш случай) значение этого заголовка должно быть `Bearer`.

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github.com/tiangolo/fastapi

fastapi/security/api_key.py

        """
        The WWW-Authenticate header is not standardized for API Key authentication but
        the HTTP specification requires that an error of 401 "Unauthorized" must
        include a WWW-Authenticate header.

        Ref: https://datatracker.ietf.org/doc/html/rfc9110#name-401-unauthorized

        For this, this method sends a custom challenge `APIKey`.
        """
        return HTTPException(

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