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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/base/network_change_notifier_passive.h"
#include <string>
#include <unordered_set>
#include <utility>
#include "base/functional/bind.h"
#include "base/task/task_traits.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "net/dns/dns_config_service_posix.h"
#include "net/dns/system_dns_config_change_notifier.h"
#if BUILDFLAG(IS_ANDROID)
#include "net/android/network_change_notifier_android.h"
#endif
#if BUILDFLAG(IS_LINUX)
#include <linux/rtnetlink.h>
#include "net/base/network_change_notifier_linux.h"
#endif
namespace net {
NetworkChangeNotifierPassive::NetworkChangeNotifierPassive(
NetworkChangeNotifier::ConnectionType initial_connection_type,
NetworkChangeNotifier::ConnectionSubtype initial_connection_subtype)
: NetworkChangeNotifierPassive(initial_connection_type,
initial_connection_subtype,
/*system_dns_config_notifier=*/nullptr) {}
NetworkChangeNotifierPassive::NetworkChangeNotifierPassive(
NetworkChangeNotifier::ConnectionType initial_connection_type,
NetworkChangeNotifier::ConnectionSubtype initial_connection_subtype,
SystemDnsConfigChangeNotifier* system_dns_config_notifier)
: NetworkChangeNotifier(NetworkChangeCalculatorParamsPassive(),
system_dns_config_notifier),
connection_type_(initial_connection_type),
max_bandwidth_mbps_(
NetworkChangeNotifier::GetMaxBandwidthMbpsForConnectionSubtype(
initial_connection_subtype)) {}
NetworkChangeNotifierPassive::~NetworkChangeNotifierPassive() {
ClearGlobalPointer();
}
void NetworkChangeNotifierPassive::OnDNSChanged() {
GetCurrentSystemDnsConfigNotifier()->RefreshConfig();
}
void NetworkChangeNotifierPassive::OnIPAddressChanged() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
NetworkChangeNotifier::NotifyObserversOfIPAddressChange();
}
void NetworkChangeNotifierPassive::OnConnectionChanged(
NetworkChangeNotifier::ConnectionType connection_type) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
{
base::AutoLock scoped_lock(lock_);
connection_type_ = connection_type;
}
NetworkChangeNotifier::NotifyObserversOfConnectionTypeChange();
}
void NetworkChangeNotifierPassive::OnConnectionSubtypeChanged(
NetworkChangeNotifier::ConnectionType connection_type,
NetworkChangeNotifier::ConnectionSubtype connection_subtype) {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
double max_bandwidth_mbps =
GetMaxBandwidthMbpsForConnectionSubtype(connection_subtype);
{
base::AutoLock scoped_lock(lock_);
max_bandwidth_mbps_ = max_bandwidth_mbps;
}
NetworkChangeNotifier::NotifyObserversOfMaxBandwidthChange(max_bandwidth_mbps,
connection_type);
}
NetworkChangeNotifier::ConnectionType
NetworkChangeNotifierPassive::GetCurrentConnectionType() const {
base::AutoLock scoped_lock(lock_);
return connection_type_;
}
void NetworkChangeNotifierPassive::GetCurrentMaxBandwidthAndConnectionType(
double* max_bandwidth_mbps,
ConnectionType* connection_type) const {
base::AutoLock scoped_lock(lock_);
*connection_type = connection_type_;
*max_bandwidth_mbps = max_bandwidth_mbps_;
}
#if BUILDFLAG(IS_LINUX)
AddressMapOwnerLinux*
NetworkChangeNotifierPassive::GetAddressMapOwnerInternal() {
return &address_map_cache_;
}
#endif
// static
NetworkChangeNotifier::NetworkChangeCalculatorParams
NetworkChangeNotifierPassive::NetworkChangeCalculatorParamsPassive() {
NetworkChangeCalculatorParams params;
#if BUILDFLAG(IS_CHROMEOS)
// Delay values arrived at by simple experimentation and adjusted so as to
// produce a single signal when switching between network connections.
params.ip_address_offline_delay_ = base::Milliseconds(4000);
params.ip_address_online_delay_ = base::Milliseconds(1000);
params.connection_type_offline_delay_ = base::Milliseconds(500);
params.connection_type_online_delay_ = base::Milliseconds(500);
#elif BUILDFLAG(IS_ANDROID)
params = NetworkChangeNotifierAndroid::NetworkChangeCalculatorParamsAndroid();
#elif BUILDFLAG(IS_LINUX)
params = NetworkChangeNotifierLinux::NetworkChangeCalculatorParamsLinux();
#else
NOTIMPLEMENTED();
#endif
return params;
}
} // namespace net
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