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// Copyright 2014 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 CHROMEOS_NETWORK_HOST_RESOLVER_IMPL_CHROMEOS_H_
#define CHROMEOS_NETWORK_HOST_RESOLVER_IMPL_CHROMEOS_H_
#include "base/memory/ref_counted.h"
#include "base/threading/thread_checker.h"
#include "chromeos/chromeos_export.h"
#include "net/dns/host_resolver_impl.h"
namespace base {
class MessageLoopProxy;
}
namespace chromeos {
class NetworkStateHandler;
}
namespace chromeos {
// HostResolverImplChromeOS overrides HostResolverImpl::Resolve in order to
// provide the correct IP addresses for localhost using the chromeos
// NetworkHandler interface. ('hostname' only returns 'localhost' on cros).
class CHROMEOS_EXPORT HostResolverImplChromeOS : public net::HostResolverImpl {
public:
// ChromeOS specific implementation of HostResolver::CreateSystemResolver.
// Assumes NetworkHandler has been initialized.
// This is expected to be constructed on the same thread that Resolve() is
// called from, i.e. the IO thread, which is presumed to differ from the
// thread that NetworkStateHandler is called on, i.e. the UI thread.
static scoped_ptr<net::HostResolver> CreateSystemResolver(
const Options& options,
net::NetLog* net_log);
// Creates a host resolver instance for testing.
static scoped_ptr<net::HostResolver> CreateHostResolverForTest(
scoped_refptr<base::MessageLoopProxy> network_handler_message_loop,
NetworkStateHandler* network_state_handler);
virtual ~HostResolverImplChromeOS();
// HostResolverImpl
virtual int Resolve(const RequestInfo& info,
net::RequestPriority priority,
net::AddressList* addresses,
const net::CompletionCallback& callback,
RequestHandle* out_req,
const net::BoundNetLog& source_net_log) override;
private:
friend class net::HostResolver;
class NetworkObserver;
HostResolverImplChromeOS(
scoped_refptr<base::MessageLoopProxy> network_handler_message_loop,
NetworkStateHandler* network_state_handler,
const Options& options,
net::NetLog* net_log);
void SetIPAddresses(const std::string& ipv4_address,
const std::string& ipv6_address);
bool ResolveLocalIPAddress(const RequestInfo& info,
net::AddressList* addresses);
std::string ipv4_address_;
std::string ipv6_address_;
base::ThreadChecker thread_checker_;
scoped_refptr<base::MessageLoopProxy> network_handler_message_loop_;
base::WeakPtrFactory<HostResolverImplChromeOS> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(HostResolverImplChromeOS);
};
} // namespace chromeos
#endif // CHROMEOS_NETWORK_HOST_RESOLVER_IMPL_CHROMEOS_H_
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