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| 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/quic_connection.h" | 5 #include "net/quic/quic_connection.h" |
| 6 | 6 |
| 7 #include <string.h> | 7 #include <string.h> |
| 8 #include <sys/types.h> | 8 #include <sys/types.h> |
| 9 | 9 |
| 10 #include <algorithm> | 10 #include <algorithm> |
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| 62 return delta <= kMaxPacketGap; | 62 return delta <= kMaxPacketGap; |
| 63 } | 63 } |
| 64 | 64 |
| 65 // An alarm that is scheduled to send an ack if a timeout occurs. | 65 // An alarm that is scheduled to send an ack if a timeout occurs. |
| 66 class AckAlarm : public QuicAlarm::Delegate { | 66 class AckAlarm : public QuicAlarm::Delegate { |
| 67 public: | 67 public: |
| 68 explicit AckAlarm(QuicConnection* connection) | 68 explicit AckAlarm(QuicConnection* connection) |
| 69 : connection_(connection) { | 69 : connection_(connection) { |
| 70 } | 70 } |
| 71 | 71 |
| 72 virtual QuicTime OnAlarm() override { | 72 QuicTime OnAlarm() override { |
| 73 connection_->SendAck(); | 73 connection_->SendAck(); |
| 74 return QuicTime::Zero(); | 74 return QuicTime::Zero(); |
| 75 } | 75 } |
| 76 | 76 |
| 77 private: | 77 private: |
| 78 QuicConnection* connection_; | 78 QuicConnection* connection_; |
| 79 | 79 |
| 80 DISALLOW_COPY_AND_ASSIGN(AckAlarm); | 80 DISALLOW_COPY_AND_ASSIGN(AckAlarm); |
| 81 }; | 81 }; |
| 82 | 82 |
| 83 // This alarm will be scheduled any time a data-bearing packet is sent out. | 83 // This alarm will be scheduled any time a data-bearing packet is sent out. |
| 84 // When the alarm goes off, the connection checks to see if the oldest packets | 84 // When the alarm goes off, the connection checks to see if the oldest packets |
| 85 // have been acked, and retransmit them if they have not. | 85 // have been acked, and retransmit them if they have not. |
| 86 class RetransmissionAlarm : public QuicAlarm::Delegate { | 86 class RetransmissionAlarm : public QuicAlarm::Delegate { |
| 87 public: | 87 public: |
| 88 explicit RetransmissionAlarm(QuicConnection* connection) | 88 explicit RetransmissionAlarm(QuicConnection* connection) |
| 89 : connection_(connection) { | 89 : connection_(connection) { |
| 90 } | 90 } |
| 91 | 91 |
| 92 virtual QuicTime OnAlarm() override { | 92 QuicTime OnAlarm() override { |
| 93 connection_->OnRetransmissionTimeout(); | 93 connection_->OnRetransmissionTimeout(); |
| 94 return QuicTime::Zero(); | 94 return QuicTime::Zero(); |
| 95 } | 95 } |
| 96 | 96 |
| 97 private: | 97 private: |
| 98 QuicConnection* connection_; | 98 QuicConnection* connection_; |
| 99 | 99 |
| 100 DISALLOW_COPY_AND_ASSIGN(RetransmissionAlarm); | 100 DISALLOW_COPY_AND_ASSIGN(RetransmissionAlarm); |
| 101 }; | 101 }; |
| 102 | 102 |
| 103 // An alarm that is scheduled when the sent scheduler requires a | 103 // An alarm that is scheduled when the sent scheduler requires a |
| 104 // a delay before sending packets and fires when the packet may be sent. | 104 // a delay before sending packets and fires when the packet may be sent. |
| 105 class SendAlarm : public QuicAlarm::Delegate { | 105 class SendAlarm : public QuicAlarm::Delegate { |
| 106 public: | 106 public: |
| 107 explicit SendAlarm(QuicConnection* connection) | 107 explicit SendAlarm(QuicConnection* connection) |
| 108 : connection_(connection) { | 108 : connection_(connection) { |
| 109 } | 109 } |
| 110 | 110 |
| 111 virtual QuicTime OnAlarm() override { | 111 QuicTime OnAlarm() override { |
| 112 connection_->WriteIfNotBlocked(); | 112 connection_->WriteIfNotBlocked(); |
| 113 // Never reschedule the alarm, since CanWrite does that. | 113 // Never reschedule the alarm, since CanWrite does that. |
| 114 return QuicTime::Zero(); | 114 return QuicTime::Zero(); |
| 115 } | 115 } |
| 116 | 116 |
| 117 private: | 117 private: |
| 118 QuicConnection* connection_; | 118 QuicConnection* connection_; |
| 119 | 119 |
| 120 DISALLOW_COPY_AND_ASSIGN(SendAlarm); | 120 DISALLOW_COPY_AND_ASSIGN(SendAlarm); |
| 121 }; | 121 }; |
| 122 | 122 |
| 123 class TimeoutAlarm : public QuicAlarm::Delegate { | 123 class TimeoutAlarm : public QuicAlarm::Delegate { |
| 124 public: | 124 public: |
| 125 explicit TimeoutAlarm(QuicConnection* connection) | 125 explicit TimeoutAlarm(QuicConnection* connection) |
| 126 : connection_(connection) { | 126 : connection_(connection) { |
| 127 } | 127 } |
| 128 | 128 |
| 129 virtual QuicTime OnAlarm() override { | 129 QuicTime OnAlarm() override { |
| 130 connection_->CheckForTimeout(); | 130 connection_->CheckForTimeout(); |
| 131 // Never reschedule the alarm, since CheckForTimeout does that. | 131 // Never reschedule the alarm, since CheckForTimeout does that. |
| 132 return QuicTime::Zero(); | 132 return QuicTime::Zero(); |
| 133 } | 133 } |
| 134 | 134 |
| 135 private: | 135 private: |
| 136 QuicConnection* connection_; | 136 QuicConnection* connection_; |
| 137 | 137 |
| 138 DISALLOW_COPY_AND_ASSIGN(TimeoutAlarm); | 138 DISALLOW_COPY_AND_ASSIGN(TimeoutAlarm); |
| 139 }; | 139 }; |
| 140 | 140 |
| 141 class PingAlarm : public QuicAlarm::Delegate { | 141 class PingAlarm : public QuicAlarm::Delegate { |
| 142 public: | 142 public: |
| 143 explicit PingAlarm(QuicConnection* connection) | 143 explicit PingAlarm(QuicConnection* connection) |
| 144 : connection_(connection) { | 144 : connection_(connection) { |
| 145 } | 145 } |
| 146 | 146 |
| 147 virtual QuicTime OnAlarm() override { | 147 QuicTime OnAlarm() override { |
| 148 connection_->SendPing(); | 148 connection_->SendPing(); |
| 149 return QuicTime::Zero(); | 149 return QuicTime::Zero(); |
| 150 } | 150 } |
| 151 | 151 |
| 152 private: | 152 private: |
| 153 QuicConnection* connection_; | 153 QuicConnection* connection_; |
| 154 | 154 |
| 155 DISALLOW_COPY_AND_ASSIGN(PingAlarm); | 155 DISALLOW_COPY_AND_ASSIGN(PingAlarm); |
| 156 }; | 156 }; |
| 157 | 157 |
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| 2040 } | 2040 } |
| 2041 for (size_t i = 0; i < retransmittable_frames->frames().size(); ++i) { | 2041 for (size_t i = 0; i < retransmittable_frames->frames().size(); ++i) { |
| 2042 if (retransmittable_frames->frames()[i].type == CONNECTION_CLOSE_FRAME) { | 2042 if (retransmittable_frames->frames()[i].type == CONNECTION_CLOSE_FRAME) { |
| 2043 return true; | 2043 return true; |
| 2044 } | 2044 } |
| 2045 } | 2045 } |
| 2046 return false; | 2046 return false; |
| 2047 } | 2047 } |
| 2048 | 2048 |
| 2049 } // namespace net | 2049 } // namespace net |
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