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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PREDICTORS_RESOLVE_HOST_CLIENT_IMPL_H_
#define CHROME_BROWSER_PREDICTORS_RESOLVE_HOST_CLIENT_IMPL_H_
#include <optional>
#include "base/functional/bind.h"
#include "base/time/time.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "net/base/address_list.h"
#include "net/dns/public/host_resolver_results.h"
#include "services/network/public/cpp/resolve_host_client_base.h"
#include "services/network/public/mojom/host_resolver.mojom-forward.h"
class GURL;
namespace net {
class NetworkAnonymizationKey;
} // namespace net
namespace network {
namespace mojom {
class NetworkContext;
}
} // namespace network
namespace predictors {
using ResolveHostCallback = base::OnceCallback<void(bool success)>;
// This class helps perform the host resolution using the NetworkContext.
// An instance of this class must be deleted after the callback is invoked.
class ResolveHostClientImpl : public network::ResolveHostClientBase {
public:
// Starts the host resolution for |url|. |callback| is called when the host is
// resolved or when an error occurs.
ResolveHostClientImpl(
const GURL& url,
const net::NetworkAnonymizationKey& network_anonymization_key,
ResolveHostCallback callback,
network::mojom::NetworkContext* network_context);
ResolveHostClientImpl(const ResolveHostClientImpl&) = delete;
ResolveHostClientImpl& operator=(const ResolveHostClientImpl&) = delete;
// Cancels the request if it hasn't been completed yet.
~ResolveHostClientImpl() override;
// network::mojom::ResolveHostClient:
void OnComplete(int result,
const net::ResolveErrorInfo& resolve_error_info,
const std::optional<net::AddressList>& resolved_addresses,
const std::optional<net::HostResolverEndpointResults>&
endpoint_results_with_metadata) override;
void OnConnectionError();
private:
base::TimeTicks resolve_host_start_time_;
mojo::Receiver<network::mojom::ResolveHostClient> receiver_{this};
ResolveHostCallback callback_;
};
} // namespace predictors
#endif // CHROME_BROWSER_PREDICTORS_RESOLVE_HOST_CLIENT_IMPL_H_
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