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 3 // found in the LICENSE file. 4 // 5 // Fix rate send side congestion control, used for testing. 6 7 #ifndef NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_ 8 #define NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_ 9 10 #include "base/basictypes.h" 11 #include "base/compiler_specific.h" 12 #include "net/base/net_export.h" 13 #include "net/quic/quic_clock.h" 14 #include "net/quic/quic_connection_stats.h" 15 #include "net/quic/quic_time.h" 16 #include "net/quic/congestion_control/leaky_bucket.h" 17 #include "net/quic/congestion_control/send_algorithm_interface.h" 18 19 namespace net { 20 21 class RttStats; 22 23 class NET_EXPORT_PRIVATE FixRateSender : public SendAlgorithmInterface { 24 public: 25 explicit FixRateSender(const RttStats* rtt_stats); 26 virtual ~FixRateSender(); 27 28 // Start implementation of SendAlgorithmInterface. 29 virtual void SetFromConfig(const QuicConfig& config, bool is_server) OVERRIDE; 30 virtual void OnIncomingQuicCongestionFeedbackFrame( 31 const QuicCongestionFeedbackFrame& feedback, 32 QuicTime feedback_receive_time) OVERRIDE; 33 virtual void OnCongestionEvent(bool rtt_updated, 34 QuicByteCount bytes_in_flight, 35 const CongestionMap& acked_packets, 36 const CongestionMap& lost_packets) OVERRIDE; 37 virtual bool OnPacketSent( 38 QuicTime sent_time, 39 QuicByteCount bytes_in_flight, 40 QuicPacketSequenceNumber sequence_number, 41 QuicByteCount bytes, 42 HasRetransmittableData has_retransmittable_data) OVERRIDE; 43 virtual void OnRetransmissionTimeout(bool packets_retransmitted) OVERRIDE; 44 virtual QuicTime::Delta TimeUntilSend( 45 QuicTime now, 46 QuicByteCount bytes_in_flight, 47 HasRetransmittableData has_retransmittable_data) const OVERRIDE; 48 virtual QuicBandwidth BandwidthEstimate() const OVERRIDE; 49 virtual QuicTime::Delta RetransmissionDelay() const OVERRIDE; 50 virtual QuicByteCount GetCongestionWindow() const OVERRIDE; 51 // End implementation of SendAlgorithmInterface. 52 53 private: 54 QuicByteCount CongestionWindow() const; 55 56 const RttStats* rtt_stats_; 57 QuicBandwidth bitrate_; 58 QuicByteCount max_segment_size_; 59 LeakyBucket fix_rate_leaky_bucket_; 60 QuicTime::Delta latest_rtt_; 61 62 DISALLOW_COPY_AND_ASSIGN(FixRateSender); 63 }; 64 65 } // namespace net 66 67 #endif // NET_QUIC_CONGESTION_CONTROL_FIX_RATE_SENDER_H_ 68