naiveproxy/net/nqe/network_quality_observation.h

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2018-01-28 19:30:36 +03:00
// Copyright 2016 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_NQE_NETWORK_QUALITY_OBSERVATION_H_
#define NET_NQE_NETWORK_QUALITY_OBSERVATION_H_
#include <stdint.h>
#include "base/optional.h"
#include "base/time/time.h"
#include "net/base/net_export.h"
#include "net/nqe/network_quality_estimator_util.h"
#include "net/nqe/network_quality_observation_source.h"
namespace net {
namespace nqe {
namespace internal {
// Records observations of network quality metrics (such as round trip time
// or throughput), along with the time the observation was made. Observations
// can be made at several places in the network stack, thus the observation
// source is provided as well.
struct NET_EXPORT_PRIVATE Observation {
Observation(int32_t value,
base::TimeTicks timestamp,
const base::Optional<int32_t>& signal_strength,
NetworkQualityObservationSource source);
Observation(int32_t value,
base::TimeTicks timestamp,
const base::Optional<int32_t>& signal_strength,
NetworkQualityObservationSource source,
const base::Optional<IPHash>& host);
Observation(const Observation& other);
~Observation();
// Value of the observation.
const int32_t value;
// Time when the observation was taken.
const base::TimeTicks timestamp;
// Signal strength when the observation was taken.
const base::Optional<int32_t> signal_strength;
// The source of the observation.
const NetworkQualityObservationSource source;
// A unique identifier for the remote host which was used for the measurement.
const base::Optional<IPHash> host;
};
} // namespace internal
} // namespace nqe
} // namespace net
#endif // NET_NQE_NETWORK_QUALITY_OBSERVATION_H_