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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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