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/*
* Copyright 2020 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "sdk/objc/native/src/objc_network_monitor.h"
#include "absl/strings/string_view.h"
#include <algorithm>
#include "rtc_base/logging.h"
#include "rtc_base/string_utils.h"
namespace webrtc {
rtc::NetworkMonitorInterface* ObjCNetworkMonitorFactory::CreateNetworkMonitor(
const FieldTrialsView& field_trials) {
return new ObjCNetworkMonitor();
}
ObjCNetworkMonitor::ObjCNetworkMonitor() {
safety_flag_ = PendingTaskSafetyFlag::Create();
}
ObjCNetworkMonitor::~ObjCNetworkMonitor() {
[network_monitor_ stop];
network_monitor_ = nil;
}
void ObjCNetworkMonitor::Start() {
if (started_) {
return;
}
thread_ = rtc::Thread::Current();
RTC_DCHECK_RUN_ON(thread_);
safety_flag_->SetAlive();
network_monitor_ = [[RTCNetworkMonitor alloc] initWithObserver:this];
if (network_monitor_ == nil) {
RTC_LOG(LS_WARNING) << "Failed to create RTCNetworkMonitor; not available on this OS?";
}
started_ = true;
}
void ObjCNetworkMonitor::Stop() {
RTC_DCHECK_RUN_ON(thread_);
if (!started_) {
return;
}
safety_flag_->SetNotAlive();
[network_monitor_ stop];
network_monitor_ = nil;
started_ = false;
}
rtc::NetworkMonitorInterface::InterfaceInfo ObjCNetworkMonitor::GetInterfaceInfo(
absl::string_view interface_name) {
RTC_DCHECK_RUN_ON(thread_);
if (adapter_type_by_name_.empty()) {
// If we have no path update, assume everything's available, because it's
// preferable for WebRTC to try all interfaces rather than none at all.
return {
.adapter_type = rtc::ADAPTER_TYPE_UNKNOWN,
.available = true,
};
}
auto iter = adapter_type_by_name_.find(interface_name);
if (iter == adapter_type_by_name_.end()) {
return {
.adapter_type = rtc::ADAPTER_TYPE_UNKNOWN,
.available = false,
};
}
return {
.adapter_type = iter->second,
.available = true,
};
}
void ObjCNetworkMonitor::OnPathUpdate(
std::map<std::string, rtc::AdapterType, rtc::AbslStringViewCmp> adapter_type_by_name) {
RTC_DCHECK(network_monitor_ != nil);
thread_->PostTask(SafeTask(safety_flag_, [this, adapter_type_by_name] {
RTC_DCHECK_RUN_ON(thread_);
adapter_type_by_name_ = adapter_type_by_name;
InvokeNetworksChangedCallback();
}));
}
} // namespace webrtc
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