chromium/net/proxy_resolution/dhcp_pac_file_fetcher.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_PROXY_RESOLUTION_DHCP_PAC_FILE_FETCHER_H_
#define NET_PROXY_RESOLUTION_DHCP_PAC_FILE_FETCHER_H_

#include <string>

#include "base/compiler_specific.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_export.h"
#include "net/proxy_resolution/pac_file_fetcher.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "url/gurl.h"

namespace net {

class NetLogWithSource;

// Interface for classes that can fetch a PAC file as configured via DHCP.
//
// The Fetch method on this interface tries to retrieve the most appropriate
// PAC script configured via DHCP.
//
// Normally there are zero or one DHCP scripts configured, but in the
// presence of multiple adapters with DHCP enabled, the fetcher resolves
// which PAC script to use if one or more are available.
class NET_EXPORT_PRIVATE DhcpPacFileFetcher { … };

// A do-nothing retriever, always returns synchronously with
// ERR_NOT_IMPLEMENTED result and empty text.
class NET_EXPORT_PRIVATE DoNothingDhcpPacFileFetcher
    : public DhcpPacFileFetcher { … };

}  // namespace net

#endif  // NET_PROXY_RESOLUTION_DHCP_PAC_FILE_FETCHER_H_