chromium/net/nqe/network_quality_estimator.h

// Copyright 2015 The Chromium Authors
// 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_ESTIMATOR_H_
#define NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_

#include <stdint.h>

#include <map>
#include <memory>
#include <optional>
#include <vector>

#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/sequence_checker.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "net/base/net_export.h"
#include "net/base/network_change_notifier.h"
#include "net/log/net_log_with_source.h"
#include "net/nqe/cached_network_quality.h"
#include "net/nqe/effective_connection_type.h"
#include "net/nqe/effective_connection_type_observer.h"
#include "net/nqe/event_creator.h"
#include "net/nqe/network_id.h"
#include "net/nqe/network_quality.h"
#include "net/nqe/network_quality_estimator_params.h"
#include "net/nqe/network_quality_observation.h"
#include "net/nqe/network_quality_observation_source.h"
#include "net/nqe/network_quality_store.h"
#include "net/nqe/observation_buffer.h"
#include "net/nqe/peer_to_peer_connections_count_observer.h"
#include "net/nqe/rtt_throughput_estimates_observer.h"
#include "net/nqe/socket_watcher_factory.h"

namespace base {
class TickClock;
}  // namespace base

namespace net {

class HostPortPair;
class NetLog;

namespace nqe::internal {
class ThroughputAnalyzer;
}  // namespace nqe::internal

class URLRequest;

// NetworkQualityEstimator provides network quality estimates (quality of the
// full paths to all origins that have been connected to).
// The estimates are based on the observed organic traffic.
// A NetworkQualityEstimator instance is attached to URLRequestContexts and
// observes the traffic of URLRequests spawned from the URLRequestContexts.
// A single instance of NQE can be attached to multiple URLRequestContexts,
// thereby increasing the single NQE instance's accuracy by providing more
// observed traffic characteristics.
class NET_EXPORT_PRIVATE NetworkQualityEstimator
    : public NetworkChangeNotifier::ConnectionTypeObserver { … };

}  // namespace net

#endif  // NET_NQE_NETWORK_QUALITY_ESTIMATOR_H_