| OLD | NEW |
| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "net/quic/congestion_control/fix_rate_sender.h" | 5 #include "net/quic/congestion_control/fix_rate_sender.h" |
| 6 | 6 |
| 7 #include <math.h> | 7 #include <math.h> |
| 8 | 8 |
| 9 #include <algorithm> | 9 #include <algorithm> |
| 10 | 10 |
| 11 #include "base/logging.h" | 11 #include "base/logging.h" |
| 12 #include "net/quic/congestion_control/rtt_stats.h" | 12 #include "net/quic/congestion_control/rtt_stats.h" |
| 13 #include "net/quic/quic_protocol.h" | 13 #include "net/quic/quic_protocol.h" |
| 14 | 14 |
| 15 using std::max; | 15 using std::max; |
| 16 | 16 |
| 17 namespace { | 17 namespace { |
| 18 const int kInitialBitrate = 100000; // In bytes per second. | 18 const int kInitialBitrate = 100000; // In bytes per second. |
| 19 const uint64 kWindowSizeUs = 10000; // 10 ms. | 19 const uint64 kWindowSizeUs = 10000; // 10 ms. |
| 20 } | 20 } |
| 21 | 21 |
| 22 namespace net { | 22 namespace net { |
| 23 | 23 |
| 24 FixRateSender::FixRateSender(const RttStats* rtt_stats) | 24 FixRateSender::FixRateSender(const RttStats* rtt_stats) |
| 25 : rtt_stats_(rtt_stats), | 25 : rtt_stats_(rtt_stats), |
| 26 bitrate_(QuicBandwidth::FromBytesPerSecond(kInitialBitrate)), | 26 bitrate_(QuicBandwidth::FromBytesPerSecond(kInitialBitrate)), |
| 27 max_segment_size_(kDefaultMaxPacketSize), | 27 max_segment_size_(kDefaultMaxPacketSize), |
| 28 fix_rate_leaky_bucket_(bitrate_), | 28 fix_rate_leaky_bucket_(bitrate_), |
| 29 paced_sender_(bitrate_, max_segment_size_), | 29 paced_sender_(bitrate_, max_segment_size_), |
| 30 data_in_flight_(0), | 30 data_in_flight_(0), |
| 31 latest_rtt_(QuicTime::Delta::Zero()) { | 31 latest_rtt_(QuicTime::Delta::Zero()) { |
| 32 DVLOG(1) << "FixRateSender"; | 32 DVLOG(1) << "FixRateSender"; |
| 33 } | 33 } |
| 34 | 34 |
| 35 FixRateSender::~FixRateSender() { | 35 FixRateSender::~FixRateSender() { |
| 36 } | 36 } |
| 37 | 37 |
| 38 void FixRateSender::SetFromConfig(const QuicConfig& config, bool is_server) { | 38 void FixRateSender::SetFromConfig(const QuicConfig& config, bool is_server) { |
| 39 } | 39 } |
| 40 | 40 |
| 41 void FixRateSender::OnIncomingQuicCongestionFeedbackFrame( | 41 void FixRateSender::OnIncomingQuicCongestionFeedbackFrame( |
| 42 const QuicCongestionFeedbackFrame& feedback, | 42 const QuicCongestionFeedbackFrame& feedback, |
| 43 QuicTime feedback_receive_time) { | 43 QuicTime feedback_receive_time) { |
| 44 LOG_IF(DFATAL, feedback.type != kFixRate) << | 44 LOG_IF(DFATAL, feedback.type != kFixRate) |
| 45 "Invalid incoming CongestionFeedbackType:" << feedback.type; | 45 << "Invalid incoming CongestionFeedbackType:" << feedback.type; |
| 46 if (feedback.type == kFixRate) { | 46 if (feedback.type == kFixRate) { |
| 47 bitrate_ = feedback.fix_rate.bitrate; | 47 bitrate_ = feedback.fix_rate.bitrate; |
| 48 fix_rate_leaky_bucket_.SetDrainingRate(feedback_receive_time, bitrate_); | 48 fix_rate_leaky_bucket_.SetDrainingRate(feedback_receive_time, bitrate_); |
| 49 paced_sender_.UpdateBandwidthEstimate(feedback_receive_time, bitrate_); | 49 paced_sender_.UpdateBandwidthEstimate(feedback_receive_time, bitrate_); |
| 50 } | 50 } |
| 51 // Silently ignore invalid messages in release mode. | 51 // Silently ignore invalid messages in release mode. |
| 52 } | 52 } |
| 53 | 53 |
| 54 void FixRateSender::OnPacketAcked( | 54 void FixRateSender::OnPacketAcked( |
| 55 QuicPacketSequenceNumber /*acked_sequence_number*/, | 55 QuicPacketSequenceNumber /*acked_sequence_number*/, |
| (...skipping 12 matching lines...) Expand all Loading... |
| 68 QuicPacketSequenceNumber /*sequence_number*/, | 68 QuicPacketSequenceNumber /*sequence_number*/, |
| 69 QuicByteCount bytes, | 69 QuicByteCount bytes, |
| 70 HasRetransmittableData /*has_retransmittable_data*/) { | 70 HasRetransmittableData /*has_retransmittable_data*/) { |
| 71 fix_rate_leaky_bucket_.Add(sent_time, bytes); | 71 fix_rate_leaky_bucket_.Add(sent_time, bytes); |
| 72 paced_sender_.OnPacketSent(sent_time, bytes); | 72 paced_sender_.OnPacketSent(sent_time, bytes); |
| 73 data_in_flight_ += bytes; | 73 data_in_flight_ += bytes; |
| 74 | 74 |
| 75 return true; | 75 return true; |
| 76 } | 76 } |
| 77 | 77 |
| 78 void FixRateSender::OnRetransmissionTimeout(bool packets_retransmitted) { } | 78 void FixRateSender::OnRetransmissionTimeout(bool packets_retransmitted) { |
| 79 } |
| 79 | 80 |
| 80 void FixRateSender::OnPacketAbandoned( | 81 void FixRateSender::OnPacketAbandoned( |
| 81 QuicPacketSequenceNumber /*sequence_number*/, | 82 QuicPacketSequenceNumber /*sequence_number*/, |
| 82 QuicByteCount bytes_abandoned) { | 83 QuicByteCount bytes_abandoned) { |
| 83 DCHECK_GE(data_in_flight_, bytes_abandoned); | 84 DCHECK_GE(data_in_flight_, bytes_abandoned); |
| 84 data_in_flight_ -= bytes_abandoned; | 85 data_in_flight_ -= bytes_abandoned; |
| 85 } | 86 } |
| 86 | 87 |
| 87 QuicTime::Delta FixRateSender::TimeUntilSend( | 88 QuicTime::Delta FixRateSender::TimeUntilSend( |
| 88 QuicTime now, | 89 QuicTime now, |
| (...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 120 // TODO(pwestin): Calculate and return retransmission delay. | 121 // TODO(pwestin): Calculate and return retransmission delay. |
| 121 // Use 2 * the latest RTT for now. | 122 // Use 2 * the latest RTT for now. |
| 122 return latest_rtt_.Add(latest_rtt_); | 123 return latest_rtt_.Add(latest_rtt_); |
| 123 } | 124 } |
| 124 | 125 |
| 125 QuicByteCount FixRateSender::GetCongestionWindow() const { | 126 QuicByteCount FixRateSender::GetCongestionWindow() const { |
| 126 return 0; | 127 return 0; |
| 127 } | 128 } |
| 128 | 129 |
| 129 } // namespace net | 130 } // namespace net |
| OLD | NEW |