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// Copyright 2019 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 QUICHE_QUIC_CORE_CONGESTION_CONTROL_BBR2_DRAIN_H_
#define QUICHE_QUIC_CORE_CONGESTION_CONTROL_BBR2_DRAIN_H_
#include "quic/core/congestion_control/bbr2_misc.h"
#include "quic/core/quic_time.h"
#include "quic/core/quic_types.h"
#include "quic/platform/api/quic_export.h"
namespace quic {
class Bbr2Sender;
class QUIC_EXPORT_PRIVATE Bbr2DrainMode final : public Bbr2ModeBase {
public:
using Bbr2ModeBase::Bbr2ModeBase;
void Enter(QuicTime /*now*/,
const Bbr2CongestionEvent* /*congestion_event*/) override {}
void Leave(QuicTime /*now*/,
const Bbr2CongestionEvent* /*congestion_event*/) override {}
Bbr2Mode OnCongestionEvent(
QuicByteCount prior_in_flight,
QuicTime event_time,
const AckedPacketVector& acked_packets,
const LostPacketVector& lost_packets,
const Bbr2CongestionEvent& congestion_event) override;
Limits<QuicByteCount> GetCwndLimits() const override {
return NoGreaterThan(model_->inflight_lo());
}
bool IsProbingForBandwidth() const override { return false; }
Bbr2Mode OnExitQuiescence(QuicTime /*now*/,
QuicTime /*quiescence_start_time*/) override {
return Bbr2Mode::DRAIN;
}
struct QUIC_EXPORT_PRIVATE DebugState {
QuicByteCount drain_target;
};
DebugState ExportDebugState() const;
private:
const Bbr2Params& Params() const;
QuicByteCount DrainTarget() const;
};
QUIC_EXPORT_PRIVATE std::ostream& operator<<(
std::ostream& os,
const Bbr2DrainMode::DebugState& state);
} // namespace quic
#endif // QUICHE_QUIC_CORE_CONGESTION_CONTROL_BBR2_DRAIN_H_