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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 org.eclipse.jetty.client;

import java.net.URI;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.api.Response;
import org.eclipse.jetty.http.HttpHeader;
import org.eclipse.jetty.http.HttpStatus;

/**
 *  A protocol handler that handles the 401 response code
 *  in association with the {@code Proxy-Authenticate} header.
 *
 *  @see WWWAuthenticationProtocolHandler
 *
 * @deprecated The Eclipse Jetty and Apache Felix Http Jetty packages are no longer supported.
 */
@Deprecated(since = "2021-05-27")
public class ProxyAuthenticationProtocolHandler extends AuthenticationProtocolHandler {

    public static final String NAME = "proxy-authenticate";

    private static final String ATTRIBUTE = ProxyAuthenticationProtocolHandler.class.getName() + ".attribute";

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

    public ProxyAuthenticationProtocolHandler(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.PROXY_AUTHENTICATION_REQUIRED_407;
    }

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

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

    @Override
    protected URI getAuthenticationURI(Request request) {
        HttpDestination destination = getHttpClient().destinationFor(request.getScheme(), request.getHost(), request.getPort());
        ProxyConfiguration.Proxy proxy = destination.getProxy();
        return proxy != null ? proxy.getURI() : request.getURI();
    }

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