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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 "base/logging.h" | 5 #include "base/logging.h" |
| 6 #include "base/memory/scoped_ptr.h" | 6 #include "base/memory/scoped_ptr.h" |
| 7 #include "base/stl_util.h" | 7 #include "base/stl_util.h" |
| 8 #include "net/quic/congestion_control/inter_arrival_sender.h" | 8 #include "net/quic/congestion_control/inter_arrival_sender.h" |
| 9 #include "net/quic/test_tools/mock_clock.h" | 9 #include "net/quic/test_tools/mock_clock.h" |
| 10 #include "testing/gtest/include/gtest/gtest.h" | 10 #include "testing/gtest/include/gtest/gtest.h" |
| 11 | 11 |
| 12 using std::pair; |
| 13 |
| 12 namespace net { | 14 namespace net { |
| 13 namespace test { | 15 namespace test { |
| 14 | 16 |
| 15 class InterArrivalSenderTest : public ::testing::Test { | 17 class InterArrivalSenderTest : public ::testing::Test { |
| 16 protected: | 18 protected: |
| 17 InterArrivalSenderTest() | 19 InterArrivalSenderTest() |
| 18 : rtt_(QuicTime::Delta::FromMilliseconds(60)), | 20 : rtt_(QuicTime::Delta::FromMilliseconds(60)), |
| 19 one_ms_(QuicTime::Delta::FromMilliseconds(1)), | 21 one_ms_(QuicTime::Delta::FromMilliseconds(1)), |
| 20 one_s_(QuicTime::Delta::FromMilliseconds(1000)), | 22 one_s_(QuicTime::Delta::FromMilliseconds(1000)), |
| 21 nine_ms_(QuicTime::Delta::FromMilliseconds(9)), | 23 nine_ms_(QuicTime::Delta::FromMilliseconds(9)), |
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| 54 } | 56 } |
| 55 } | 57 } |
| 56 | 58 |
| 57 void SendDelaySpikeFeedbackMessage(QuicTime::Delta spike_time) { | 59 void SendDelaySpikeFeedbackMessage(QuicTime::Delta spike_time) { |
| 58 QuicCongestionFeedbackFrame feedback; | 60 QuicCongestionFeedbackFrame feedback; |
| 59 feedback.type = kInterArrival; | 61 feedback.type = kInterArrival; |
| 60 feedback.inter_arrival.accumulated_number_of_lost_packets = 0; | 62 feedback.inter_arrival.accumulated_number_of_lost_packets = 0; |
| 61 receive_clock_.AdvanceTime(spike_time); | 63 receive_clock_.AdvanceTime(spike_time); |
| 62 QuicTime receive_time = receive_clock_.ApproximateNow(); | 64 QuicTime receive_time = receive_clock_.ApproximateNow(); |
| 63 feedback.inter_arrival.received_packet_times.insert( | 65 feedback.inter_arrival.received_packet_times.insert( |
| 64 std::pair<QuicPacketSequenceNumber, QuicTime>( | 66 pair<QuicPacketSequenceNumber, QuicTime>( |
| 65 feedback_sequence_number_, receive_time)); | 67 feedback_sequence_number_, receive_time)); |
| 66 feedback_sequence_number_++; | 68 feedback_sequence_number_++; |
| 67 | 69 |
| 68 // We need to send feedback for 2 packets since they where sent at the | 70 // We need to send feedback for 2 packets since they where sent at the |
| 69 // same time. | 71 // same time. |
| 70 feedback.inter_arrival.received_packet_times.insert( | 72 feedback.inter_arrival.received_packet_times.insert( |
| 71 std::pair<QuicPacketSequenceNumber, QuicTime>( | 73 pair<QuicPacketSequenceNumber, QuicTime>( |
| 72 feedback_sequence_number_, receive_time)); | 74 feedback_sequence_number_, receive_time)); |
| 73 feedback_sequence_number_++; | 75 feedback_sequence_number_++; |
| 74 | 76 |
| 75 sender_.OnIncomingQuicCongestionFeedbackFrame(feedback, send_clock_.Now(), | 77 sender_.OnIncomingQuicCongestionFeedbackFrame(feedback, send_clock_.Now(), |
| 76 sent_packets_); | 78 sent_packets_); |
| 77 } | 79 } |
| 78 | 80 |
| 79 void SendFeedbackMessageNPackets(int n, | 81 void SendFeedbackMessageNPackets(int n, |
| 80 QuicTime::Delta delta_odd, | 82 QuicTime::Delta delta_odd, |
| 81 QuicTime::Delta delta_even) { | 83 QuicTime::Delta delta_even) { |
| 82 QuicCongestionFeedbackFrame feedback; | 84 QuicCongestionFeedbackFrame feedback; |
| 83 feedback.type = kInterArrival; | 85 feedback.type = kInterArrival; |
| 84 feedback.inter_arrival.accumulated_number_of_lost_packets = 0; | 86 feedback.inter_arrival.accumulated_number_of_lost_packets = 0; |
| 85 for (int i = 0; i < n; ++i) { | 87 for (int i = 0; i < n; ++i) { |
| 86 if (feedback_sequence_number_ % 2) { | 88 if (feedback_sequence_number_ % 2) { |
| 87 receive_clock_.AdvanceTime(delta_even); | 89 receive_clock_.AdvanceTime(delta_even); |
| 88 } else { | 90 } else { |
| 89 receive_clock_.AdvanceTime(delta_odd); | 91 receive_clock_.AdvanceTime(delta_odd); |
| 90 } | 92 } |
| 91 QuicTime receive_time = receive_clock_.ApproximateNow(); | 93 QuicTime receive_time = receive_clock_.ApproximateNow(); |
| 92 feedback.inter_arrival.received_packet_times.insert( | 94 feedback.inter_arrival.received_packet_times.insert( |
| 93 std::pair<QuicPacketSequenceNumber, QuicTime>( | 95 pair<QuicPacketSequenceNumber, QuicTime>( |
| 94 feedback_sequence_number_, receive_time)); | 96 feedback_sequence_number_, receive_time)); |
| 95 feedback_sequence_number_++; | 97 feedback_sequence_number_++; |
| 96 } | 98 } |
| 97 sender_.OnIncomingQuicCongestionFeedbackFrame(feedback, send_clock_.Now(), | 99 sender_.OnIncomingQuicCongestionFeedbackFrame(feedback, send_clock_.Now(), |
| 98 sent_packets_); | 100 sent_packets_); |
| 99 } | 101 } |
| 100 | 102 |
| 101 QuicTime::Delta SenderDeltaSinceStart() { | 103 QuicTime::Delta SenderDeltaSinceStart() { |
| 102 return send_clock_.ApproximateNow().Subtract(send_start_time_); | 104 return send_clock_.ApproximateNow().Subtract(send_start_time_); |
| 103 } | 105 } |
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| 556 acked_sequence_number_ += 2; // Create a loss by not acking both packets. | 558 acked_sequence_number_ += 2; // Create a loss by not acking both packets. |
| 557 SendFeedbackMessageNPackets(2, nine_ms_, nine_ms_); | 559 SendFeedbackMessageNPackets(2, nine_ms_, nine_ms_); |
| 558 | 560 |
| 559 // Make sure our bitrate is fixed at the expected_min_bitrate. | 561 // Make sure our bitrate is fixed at the expected_min_bitrate. |
| 560 EXPECT_EQ(expected_min_bitrate, sender_.BandwidthEstimate()); | 562 EXPECT_EQ(expected_min_bitrate, sender_.BandwidthEstimate()); |
| 561 } | 563 } |
| 562 } | 564 } |
| 563 | 565 |
| 564 } // namespace test | 566 } // namespace test |
| 565 } // namespace net | 567 } // namespace net |
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