blob: 7b54e5709627032f953c4206da611f8686a8c79c [file] [log] [blame]
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_PROXY_RESOLUTION_PROXY_RESOLVER_H_
#define NET_PROXY_RESOLUTION_PROXY_RESOLVER_H_
#include "base/callback_forward.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "net/base/completion_once_callback.h"
#include "net/base/load_states.h"
#include "net/base/net_export.h"
#include "net/proxy_resolution/pac_file_data.h"
#include "url/gurl.h"
namespace net {
class NetLogWithSource;
class NetworkIsolationKey;
class ProxyInfo;
// Interface for "proxy resolvers". A ProxyResolver fills in a list of proxies
// to use for a particular URL. Generally the backend for a ProxyResolver is
// a PAC script, but it doesn't need to be. ProxyResolver can service multiple
// requests at a time.
class NET_EXPORT_PRIVATE ProxyResolver {
public:
class Request {
public:
virtual ~Request() {} // Cancels the request
virtual LoadState GetLoadState() = 0;
};
ProxyResolver() {}
virtual ~ProxyResolver() {}
// Gets a list of proxy servers to use for |url|. If the request will
// complete asynchronously returns ERR_IO_PENDING and notifies the result
// by running |callback|. If the result code is OK then
// the request was successful and |results| contains the proxy
// resolution information. In the case of asynchronous completion
// |*request| is written to. Call request_.reset() to cancel the request.
//
// |network_isolation_key| is used for any DNS lookups associated with the
// request, if net's HostResolver is used. If the underlying platform itself
// handles proxy resolution, |network_isolation_key| will be ignored.
virtual int GetProxyForURL(const GURL& url,
const NetworkIsolationKey& network_isolation_key,
ProxyInfo* results,
CompletionOnceCallback callback,
std::unique_ptr<Request>* request,
const NetLogWithSource& net_log) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(ProxyResolver);
};
} // namespace net
#endif // NET_PROXY_RESOLUTION_PROXY_RESOLVER_H_