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// Copyright (c) 2012 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_DNS_DNS_CLIENT_H_
#define NET_DNS_DNS_CLIENT_H_
#include "base/memory/scoped_ptr.h"
#include "net/base/net_export.h"
namespace net {
struct DnsConfig;
class DnsTransactionFactory;
class NetLog;
// Convenience wrapper allows easy injection of DnsTransaction into
// HostResolverImpl.
class NET_EXPORT DnsClient {
public:
virtual ~DnsClient() {}
// Creates a new DnsTransactionFactory according to the new |config|.
virtual void SetConfig(const DnsConfig& config) = 0;
// Returns NULL if the current config is not valid.
virtual const DnsConfig* GetConfig() const = 0;
// Returns NULL if the current config is not valid.
virtual DnsTransactionFactory* GetTransactionFactory() = 0;
// Creates default client.
static scoped_ptr<DnsClient> CreateClient(NetLog* net_log);
};
} // namespace net
#endif // NET_DNS_DNS_CLIENT_H_
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