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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 <algorithm> | 5 #include <algorithm> |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/stl_util.h" | 8 #include "base/stl_util.h" |
9 #include "net/quic/congestion_control/rtt_stats.h" | 9 #include "net/quic/congestion_control/rtt_stats.h" |
10 #include "net/quic/congestion_control/tcp_loss_algorithm.h" | 10 #include "net/quic/congestion_control/tcp_loss_algorithm.h" |
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28 rtt_stats_.UpdateRtt(QuicTime::Delta::FromMilliseconds(100), | 28 rtt_stats_.UpdateRtt(QuicTime::Delta::FromMilliseconds(100), |
29 QuicTime::Delta::Zero(), | 29 QuicTime::Delta::Zero(), |
30 clock_.Now()); | 30 clock_.Now()); |
31 } | 31 } |
32 | 32 |
33 ~TcpLossAlgorithmTest() override { | 33 ~TcpLossAlgorithmTest() override { |
34 STLDeleteElements(&packets_); | 34 STLDeleteElements(&packets_); |
35 } | 35 } |
36 | 36 |
37 void SendDataPacket(QuicPacketSequenceNumber sequence_number) { | 37 void SendDataPacket(QuicPacketSequenceNumber sequence_number) { |
38 packets_.push_back(QuicPacket::NewDataPacket( | 38 packets_.push_back(new QuicPacket(nullptr, kDefaultLength, false, |
39 nullptr, kDefaultLength, false, PACKET_8BYTE_CONNECTION_ID, false, | 39 PACKET_8BYTE_CONNECTION_ID, false, |
40 PACKET_1BYTE_SEQUENCE_NUMBER)); | 40 PACKET_1BYTE_SEQUENCE_NUMBER)); |
41 SerializedPacket packet(sequence_number, PACKET_1BYTE_SEQUENCE_NUMBER, | 41 SerializedPacket packet(sequence_number, PACKET_1BYTE_SEQUENCE_NUMBER, |
42 packets_.back(), 0, new RetransmittableFrames()); | 42 packets_.back(), 0, new RetransmittableFrames()); |
43 unacked_packets_.AddSentPacket(packet, 0, NOT_RETRANSMISSION, clock_.Now(), | 43 unacked_packets_.AddSentPacket(packet, 0, NOT_RETRANSMISSION, clock_.Now(), |
44 1000, true); | 44 1000, true); |
45 } | 45 } |
46 | 46 |
47 void VerifyLosses(QuicPacketSequenceNumber largest_observed, | 47 void VerifyLosses(QuicPacketSequenceNumber largest_observed, |
48 QuicPacketSequenceNumber* losses_expected, | 48 QuicPacketSequenceNumber* losses_expected, |
49 size_t num_losses) { | 49 size_t num_losses) { |
50 SequenceNumberSet lost_packets = | 50 SequenceNumberSet lost_packets = |
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73 unacked_packets_.RemoveFromInFlight(2); | 73 unacked_packets_.RemoveFromInFlight(2); |
74 unacked_packets_.NackPacket(1, 1); | 74 unacked_packets_.NackPacket(1, 1); |
75 VerifyLosses(2, nullptr, 0); | 75 VerifyLosses(2, nullptr, 0); |
76 // No loss on two acks. | 76 // No loss on two acks. |
77 unacked_packets_.RemoveFromInFlight(3); | 77 unacked_packets_.RemoveFromInFlight(3); |
78 unacked_packets_.NackPacket(1, 2); | 78 unacked_packets_.NackPacket(1, 2); |
79 VerifyLosses(3, nullptr, 0); | 79 VerifyLosses(3, nullptr, 0); |
80 // Loss on three acks. | 80 // Loss on three acks. |
81 unacked_packets_.RemoveFromInFlight(4); | 81 unacked_packets_.RemoveFromInFlight(4); |
82 unacked_packets_.NackPacket(1, 3); | 82 unacked_packets_.NackPacket(1, 3); |
83 QuicPacketSequenceNumber lost[] = { 1 }; | 83 QuicPacketSequenceNumber lost[] = {1}; |
84 VerifyLosses(4, lost, arraysize(lost)); | 84 VerifyLosses(4, lost, arraysize(lost)); |
85 EXPECT_EQ(QuicTime::Zero(), loss_algorithm_.GetLossTimeout()); | 85 EXPECT_EQ(QuicTime::Zero(), loss_algorithm_.GetLossTimeout()); |
86 } | 86 } |
87 | 87 |
88 // A stretch ack is an ack that covers more than 1 packet of previously | 88 // A stretch ack is an ack that covers more than 1 packet of previously |
89 // unacknowledged data. | 89 // unacknowledged data. |
90 TEST_F(TcpLossAlgorithmTest, NackRetransmit1PacketWith1StretchAck) { | 90 TEST_F(TcpLossAlgorithmTest, NackRetransmit1PacketWith1StretchAck) { |
91 const size_t kNumSentPackets = 10; | 91 const size_t kNumSentPackets = 10; |
92 // Transmit 10 packets. | 92 // Transmit 10 packets. |
93 for (size_t i = 1; i <= kNumSentPackets; ++i) { | 93 for (size_t i = 1; i <= kNumSentPackets; ++i) { |
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208 unacked_packets_.IncreaseLargestObserved(2); | 208 unacked_packets_.IncreaseLargestObserved(2); |
209 unacked_packets_.RemoveFromInFlight(2); | 209 unacked_packets_.RemoveFromInFlight(2); |
210 unacked_packets_.NackPacket(1, 1); | 210 unacked_packets_.NackPacket(1, 1); |
211 QuicPacketSequenceNumber lost[] = {1}; | 211 QuicPacketSequenceNumber lost[] = {1}; |
212 VerifyLosses(2, lost, arraysize(lost)); | 212 VerifyLosses(2, lost, arraysize(lost)); |
213 } | 213 } |
214 | 214 |
215 } // namespace | 215 } // namespace |
216 } // namespace test | 216 } // namespace test |
217 } // namespace net | 217 } // namespace net |
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