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//
//  ========================================================================
//  Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package com.signalfx.shaded.jetty.client;

import java.net.URI;

import com.signalfx.shaded.jetty.client.api.Request;
import com.signalfx.shaded.jetty.client.api.Response;
import com.signalfx.shaded.jetty.http.HttpHeader;
import com.signalfx.shaded.jetty.http.HttpStatus;

/**
 * A protocol handler that handles the 401 response code
 * in association with the {@code WWW-Authenticate} header.
 *
 * @see ProxyAuthenticationProtocolHandler
 */
public class WWWAuthenticationProtocolHandler extends AuthenticationProtocolHandler
{
    public static final String NAME = "www-authenticate";
    private static final String ATTRIBUTE = WWWAuthenticationProtocolHandler.class.getName() + ".attribute";

    public WWWAuthenticationProtocolHandler(HttpClient client)
    {
        this(client, DEFAULT_MAX_CONTENT_LENGTH);
    }

    public WWWAuthenticationProtocolHandler(HttpClient client, int maxContentLength)
    {
        super(client, maxContentLength);
    }

    @Override
    public String getName()
    {
        return NAME;
    }

    @Override
    public boolean accept(Request request, Response response)
    {
        return response.getStatus() == HttpStatus.UNAUTHORIZED_401;
    }

    @Override
    protected HttpHeader getAuthenticateHeader()
    {
        return HttpHeader.WWW_AUTHENTICATE;
    }

    @Override
    protected HttpHeader getAuthorizationHeader()
    {
        return HttpHeader.AUTHORIZATION;
    }

    @Override
    protected URI getAuthenticationURI(Request request)
    {
        return request.getURI();
    }

    @Override
    protected String getAuthenticationAttribute()
    {
        return ATTRIBUTE;
    }
}