| Index: net/quic/congestion_control/time_loss_algorithm.cc
|
| diff --git a/net/quic/congestion_control/time_loss_algorithm.cc b/net/quic/congestion_control/time_loss_algorithm.cc
|
| deleted file mode 100644
|
| index b5f90b70096e640749f1cc72ef2f3b80329f0332..0000000000000000000000000000000000000000
|
| --- a/net/quic/congestion_control/time_loss_algorithm.cc
|
| +++ /dev/null
|
| @@ -1,73 +0,0 @@
|
| -// Copyright 2014 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.
|
| -
|
| -#include "net/quic/congestion_control/time_loss_algorithm.h"
|
| -
|
| -#include "net/quic/congestion_control/rtt_stats.h"
|
| -#include "net/quic/quic_protocol.h"
|
| -
|
| -namespace net {
|
| -namespace {
|
| -
|
| -// The minimum delay before a packet will be considered lost,
|
| -// regardless of SRTT. Half of the minimum TLP, since the loss algorithm only
|
| -// triggers when a nack has been receieved for the packet.
|
| -static const size_t kMinLossDelayMs = 5;
|
| -
|
| -// How many RTTs the algorithm waits before determining a packet is lost.
|
| -static const double kLossDelayMultiplier = 1.25;
|
| -
|
| -} // namespace
|
| -
|
| -TimeLossAlgorithm::TimeLossAlgorithm()
|
| - : loss_detection_timeout_(QuicTime::Zero()) { }
|
| -
|
| -LossDetectionType TimeLossAlgorithm::GetLossDetectionType() const {
|
| - return kTime;
|
| -}
|
| -
|
| -SequenceNumberSet TimeLossAlgorithm::DetectLostPackets(
|
| - const QuicUnackedPacketMap& unacked_packets,
|
| - const QuicTime& time,
|
| - QuicPacketSequenceNumber largest_observed,
|
| - const RttStats& rtt_stats) {
|
| - SequenceNumberSet lost_packets;
|
| - loss_detection_timeout_ = QuicTime::Zero();
|
| - QuicTime::Delta loss_delay = QuicTime::Delta::Max(
|
| - QuicTime::Delta::FromMilliseconds(kMinLossDelayMs),
|
| - QuicTime::Delta::Max(rtt_stats.smoothed_rtt(), rtt_stats.latest_rtt())
|
| - .Multiply(kLossDelayMultiplier));
|
| -
|
| - QuicPacketSequenceNumber sequence_number = unacked_packets.GetLeastUnacked();
|
| - for (QuicUnackedPacketMap::const_iterator it = unacked_packets.begin();
|
| - it != unacked_packets.end() && sequence_number <= largest_observed;
|
| - ++it, ++sequence_number) {
|
| - if (!it->in_flight) {
|
| - continue;
|
| - }
|
| - LOG_IF(DFATAL, it->nack_count == 0 && it->sent_time.IsInitialized())
|
| - << "All packets less than largest observed should have been nacked."
|
| - << "sequence_number:" << sequence_number
|
| - << " largest_observed:" << largest_observed;
|
| -
|
| - // Packets are sent in order, so break when we haven't waited long enough
|
| - // to lose any more packets and leave the loss_time_ set for the timeout.
|
| - QuicTime when_lost = it->sent_time.Add(loss_delay);
|
| - if (time < when_lost) {
|
| - loss_detection_timeout_ = when_lost;
|
| - break;
|
| - }
|
| - lost_packets.insert(sequence_number);
|
| - }
|
| -
|
| - return lost_packets;
|
| -}
|
| -
|
| -// loss_time_ is updated in DetectLostPackets, which must be called every time
|
| -// an ack is received or the timeout expires.
|
| -QuicTime TimeLossAlgorithm::GetLossTimeout() const {
|
| - return loss_detection_timeout_;
|
| -}
|
| -
|
| -} // namespace net
|
|
|