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/*
* Copyright 2018 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 "p2p/base/regathering_controller.h"
#include "api/task_queue/pending_task_safety_flag.h"
#include "api/units/time_delta.h"
namespace webrtc {
BasicRegatheringController::BasicRegatheringController(
const Config& config,
cricket::IceTransportInternal* ice_transport,
rtc::Thread* thread)
: config_(config), ice_transport_(ice_transport), thread_(thread) {
RTC_DCHECK(thread_);
RTC_DCHECK_RUN_ON(thread_);
RTC_DCHECK(ice_transport_);
ice_transport_->SignalStateChanged.connect(
this, &BasicRegatheringController::OnIceTransportStateChanged);
ice_transport->SignalWritableState.connect(
this, &BasicRegatheringController::OnIceTransportWritableState);
ice_transport->SignalReceivingState.connect(
this, &BasicRegatheringController::OnIceTransportReceivingState);
ice_transport->SignalNetworkRouteChanged.connect(
this, &BasicRegatheringController::OnIceTransportNetworkRouteChanged);
}
BasicRegatheringController::~BasicRegatheringController() {
RTC_DCHECK_RUN_ON(thread_);
}
void BasicRegatheringController::Start() {
RTC_DCHECK_RUN_ON(thread_);
ScheduleRecurringRegatheringOnFailedNetworks();
}
void BasicRegatheringController::SetConfig(const Config& config) {
RTC_DCHECK_RUN_ON(thread_);
bool need_reschedule_on_failed_networks =
pending_regathering_ && (config_.regather_on_failed_networks_interval !=
config.regather_on_failed_networks_interval);
config_ = config;
if (need_reschedule_on_failed_networks) {
ScheduleRecurringRegatheringOnFailedNetworks();
}
}
void BasicRegatheringController::
ScheduleRecurringRegatheringOnFailedNetworks() {
RTC_DCHECK_RUN_ON(thread_);
RTC_DCHECK(config_.regather_on_failed_networks_interval >= 0);
// Reset pending_regathering_ to cancel any potentially pending tasks.
pending_regathering_.reset(new ScopedTaskSafety());
thread_->PostDelayedTask(
SafeTask(pending_regathering_->flag(),
[this]() {
RTC_DCHECK_RUN_ON(thread_);
// Only regather when the current session is in the CLEARED
// state (i.e., not running or stopped). It is only
// possible to enter this state when we gather continually,
// so there is an implicit check on continual gathering
// here.
if (allocator_session_ && allocator_session_->IsCleared()) {
allocator_session_->RegatherOnFailedNetworks();
}
ScheduleRecurringRegatheringOnFailedNetworks();
}),
TimeDelta::Millis(config_.regather_on_failed_networks_interval));
}
} // namespace webrtc
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