mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-12-01 01:36:09 +03:00
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
// Copyright 2017 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_RTT_THROUGHPUT_ESTIMATES_OBSERVER_H_
|
|
#define NET_NQE_RTT_THROUGHPUT_ESTIMATES_OBSERVER_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "base/compiler_specific.h"
|
|
#include "base/macros.h"
|
|
#include "base/time/time.h"
|
|
#include "net/base/net_export.h"
|
|
|
|
namespace net {
|
|
|
|
// Observes changes in the network quality.
|
|
class NET_EXPORT RTTAndThroughputEstimatesObserver {
|
|
public:
|
|
// Notifies the observer when estimated HTTP RTT, estimated transport RTT or
|
|
// estimated downstream throughput is computed. NetworkQualityEstimator
|
|
// computes the RTT and throughput estimates at regular intervals.
|
|
// Additionally, when there is a change in the connection type of the
|
|
// device, then the estimates are immediately computed.
|
|
//
|
|
// |http_rtt|, |transport_rtt| and |downstream_throughput_kbps| are the
|
|
// computed estimates of the HTTP RTT, transport RTT and downstream
|
|
// throughput (in kilobits per second), respectively. If an estimate of the
|
|
// HTTP or transport RTT is unavailable, it will be set to
|
|
// nqe::internal::InvalidRTT(). If the throughput estimate is unavailable,
|
|
// it will be set to nqe::internal::INVALID_RTT_THROUGHPUT.
|
|
virtual void OnRTTOrThroughputEstimatesComputed(
|
|
base::TimeDelta http_rtt,
|
|
base::TimeDelta transport_rtt,
|
|
int32_t downstream_throughput_kbps) = 0;
|
|
|
|
virtual ~RTTAndThroughputEstimatesObserver() {}
|
|
|
|
protected:
|
|
RTTAndThroughputEstimatesObserver() {}
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(RTTAndThroughputEstimatesObserver);
|
|
};
|
|
|
|
} // namespace net
|
|
|
|
#endif // NET_NQE_RTT_THROUGHPUT_ESTIMATES_OBSERVER_H_
|