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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 // This file intentionally does not have header guards, it's included | 5 // This file intentionally does not have header guards, it's included |
6 // inside a macro to generate values. | 6 // inside a macro to generate values. |
7 | 7 |
8 // This file contains the list of QUIC protocol flags. | 8 // This file contains the list of QUIC protocol flags. |
9 | 9 |
10 // If true, QUIC BBR congestion control may be enabled via Finch and/or via QUIC | 10 // If true, QUIC BBR congestion control may be enabled via Finch and/or via QUIC |
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86 // QUIC session if it is successfully inserted to the global map. Toss the | 86 // QUIC session if it is successfully inserted to the global map. Toss the |
87 // packet if insertion fails. | 87 // packet if insertion fails. |
88 QUIC_FLAG(bool, | 88 QUIC_FLAG(bool, |
89 FLAGS_quic_reloadable_flag_quic_create_session_after_insertion, | 89 FLAGS_quic_reloadable_flag_quic_create_session_after_insertion, |
90 false) | 90 false) |
91 | 91 |
92 // If true, rejected packet number is removed from public reset packet. | 92 // If true, rejected packet number is removed from public reset packet. |
93 QUIC_FLAG( | 93 QUIC_FLAG( |
94 bool, | 94 bool, |
95 FLAGS_quic_reloadable_flag_quic_remove_packet_number_from_public_reset, | 95 FLAGS_quic_reloadable_flag_quic_remove_packet_number_from_public_reset, |
96 false) | 96 true) |
97 | 97 |
98 // If true, v33 QUIC client uses 1 bit to specify 8-byte connection id in | 98 // If true, v33 QUIC client uses 1 bit to specify 8-byte connection id in |
99 // public flag. | 99 // public flag. |
100 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_remove_v33_hacks2, false) | 100 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_remove_v33_hacks2, false) |
101 | 101 |
102 // Enable QUIC force HOL blocking experiment. | 102 // Enable QUIC force HOL blocking experiment. |
103 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_force_hol_blocking, true) | 103 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_force_hol_blocking, true) |
104 | 104 |
105 // If true, allows packets to be buffered in anticipation of a future CHLO, and | 105 // If true, allows packets to be buffered in anticipation of a future CHLO, and |
106 // allow CHLO packets to be buffered until next iteration of the event loop. | 106 // allow CHLO packets to be buffered until next iteration of the event loop. |
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135 // If greater than zero, mean RTT variation is multiplied by the specified | 135 // If greater than zero, mean RTT variation is multiplied by the specified |
136 // factor and added to the congestion window limit. | 136 // factor and added to the congestion window limit. |
137 QUIC_FLAG(double, FLAGS_quic_bbr_rtt_variation_weight, 0.0f) | 137 QUIC_FLAG(double, FLAGS_quic_bbr_rtt_variation_weight, 0.0f) |
138 | 138 |
139 // Congestion window gain for QUIC BBR during PROBE_BW phase. | 139 // Congestion window gain for QUIC BBR during PROBE_BW phase. |
140 QUIC_FLAG(double, FLAGS_quic_bbr_cwnd_gain, 2.0f) | 140 QUIC_FLAG(double, FLAGS_quic_bbr_cwnd_gain, 2.0f) |
141 | 141 |
142 // If true, bidi streaming is always enabled in QUIC. | 142 // If true, bidi streaming is always enabled in QUIC. |
143 QUIC_FLAG(bool, | 143 QUIC_FLAG(bool, |
144 FLAGS_quic_reloadable_flag_quic_always_enable_bidi_streaming, | 144 FLAGS_quic_reloadable_flag_quic_always_enable_bidi_streaming, |
145 false) | 145 true) |
146 | 146 |
147 // If true, allows the 1RTT and 2RTT connection options to reduce the time | 147 // If true, allows the 1RTT and 2RTT connection options to reduce the time |
148 // in BBR STARTUP to 1 or 2 RTTs with no bandwidth increase from 3. | 148 // in BBR STARTUP to 1 or 2 RTTs with no bandwidth increase from 3. |
149 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_allow_2_rtt_bbr_startup, false) | 149 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_allow_2_rtt_bbr_startup, false) |
150 | 150 |
151 // If true, do not send or process stop waiting frames in QUIC if the NSTP | 151 // If true, do not send or process stop waiting frames in QUIC if the NSTP |
152 // connection option is provided. | 152 // connection option is provided. |
153 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_no_stop_waiting_frames, false) | 153 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_no_stop_waiting_frames, false) |
154 | 154 |
155 // Allows one self address change. | 155 // Allows one self address change. |
156 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_allow_one_address_change, false) | 156 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_allow_one_address_change, false) |
157 | 157 |
158 // If true, no longer send or process the SRBF value in QuicConfig. | 158 // If true, no longer send or process the SRBF value in QuicConfig. |
159 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_no_socket_receive_buffer, false) | 159 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_no_socket_receive_buffer, false) |
160 | 160 |
161 // If true, multipath bit is not used in public flag. | 161 // If true, multipath bit is not used in public flag. |
162 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_remove_multipath_bit, false) | 162 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_remove_multipath_bit, false) |
163 | 163 |
164 // Allow QUIC's flow control autotuning to increase the window as | 164 // Allow QUIC's flow control autotuning to increase the window as |
165 // quickly for the first adjustment as in subsequent ones. | 165 // quickly for the first adjustment as in subsequent ones. |
166 QUIC_FLAG(bool, | 166 QUIC_FLAG(bool, |
167 FLAGS_quic_reloadable_flag_quic_flow_control_faster_autotune, | 167 FLAGS_quic_reloadable_flag_quic_flow_control_faster_autotune, |
168 false) | 168 true) |
169 | 169 |
170 // Only consider using the ack spacing in QUIC BBR if 2 packets are acked at | 170 // Only consider using the ack spacing in QUIC BBR if 2 packets are acked at |
171 // once. | 171 // once. |
172 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_ack_spacing2, false) | 172 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_ack_spacing2, false) |
173 | 173 |
174 // If true, QUIC BBR stores a max filtered number of bytes delivered at a rate | 174 // If true, QUIC BBR stores a max filtered number of bytes delivered at a rate |
175 // faster than the sending rate. | 175 // faster than the sending rate. |
176 QUIC_FLAG(bool, | 176 QUIC_FLAG(bool, |
177 FLAGS_quic_reloadable_flag_quic_bbr_ack_aggregation_bytes, | 177 FLAGS_quic_reloadable_flag_quic_bbr_ack_aggregation_bytes, |
178 false) | 178 false) |
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208 | 208 |
209 // If true, on server side, 8-byte connection ID in public header is read and | 209 // If true, on server side, 8-byte connection ID in public header is read and |
210 // written in big endian. | 210 // written in big endian. |
211 QUIC_FLAG(bool, | 211 QUIC_FLAG(bool, |
212 FLAGS_quic_restart_flag_quic_big_endian_connection_id_server, | 212 FLAGS_quic_restart_flag_quic_big_endian_connection_id_server, |
213 false) | 213 false) |
214 | 214 |
215 // Simplify QUIC\'s adaptive time loss detection to measure the necessary | 215 // Simplify QUIC\'s adaptive time loss detection to measure the necessary |
216 // reordering window for every spurious retransmit. | 216 // reordering window for every spurious retransmit. |
217 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_adaptive_time_loss, false) | 217 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_adaptive_time_loss, false) |
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