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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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125 | 125 |
126 // If true, fix Cubic\'s use of kBetaLastMax for n-connection emulation. | 126 // If true, fix Cubic\'s use of kBetaLastMax for n-connection emulation. |
127 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_beta_last_max, false) | 127 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_fix_beta_last_max, false) |
128 | 128 |
129 // If true, enable QUIC v37. | 129 // If true, enable QUIC v37. |
130 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_37, true) | 130 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_37, true) |
131 | 131 |
132 // If true, disables QUIC v34. | 132 // If true, disables QUIC v34. |
133 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_disable_version_34, true) | 133 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_disable_version_34, true) |
134 | 134 |
135 // If true, enable quic version 38 | |
136 QUIC_FLAG(bool, FLAGS_quic_enable_version_38, false) | |
137 | |
138 // When true, ensures the session's flow control window is always at least 1.5x | 135 // When true, ensures the session's flow control window is always at least 1.5x |
139 // larger than the largest stream flow control window. | 136 // larger than the largest stream flow control window. |
140 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_flow_control_invariant, true) | 137 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_flow_control_invariant, true) |
141 | 138 |
142 // If greater than zero, mean RTT variation is multiplied by the specified | 139 // If greater than zero, mean RTT variation is multiplied by the specified |
143 // factor and added to the congestion window limit. | 140 // factor and added to the congestion window limit. |
144 QUIC_FLAG(double, FLAGS_quic_bbr_rtt_variation_weight, 0.0f) | 141 QUIC_FLAG(double, FLAGS_quic_bbr_rtt_variation_weight, 0.0f) |
145 | 142 |
146 // Congestion window gain for QUIC BBR during PROBE_BW phase. | 143 // Congestion window gain for QUIC BBR during PROBE_BW phase. |
147 QUIC_FLAG(double, FLAGS_quic_bbr_cwnd_gain, 2.0f) | 144 QUIC_FLAG(double, FLAGS_quic_bbr_cwnd_gain, 2.0f) |
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196 | 193 |
197 // Support bandwidth resumption in QUIC BBR. | 194 // Support bandwidth resumption in QUIC BBR. |
198 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_bandwidth_resumption, false) | 195 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_bandwidth_resumption, false) |
199 | 196 |
200 // Add the equivalent number of bytes as 3 TCP TSO segments to QUIC's BBR CWND. | 197 // Add the equivalent number of bytes as 3 TCP TSO segments to QUIC's BBR CWND. |
201 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_add_tso_cwnd, false) | 198 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_bbr_add_tso_cwnd, false) |
202 | 199 |
203 // Fix a crash that occurs when a client sends multiple CHLOs close together on | 200 // Fix a crash that occurs when a client sends multiple CHLOs close together on |
204 // the same connection. | 201 // the same connection. |
205 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_fix_quic_callback_crash, true) | 202 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_fix_quic_callback_crash, true) |
| 203 |
| 204 // If true, enable version 38 which supports new PADDING frame and respects NSTP |
| 205 // connection option. |
| 206 QUIC_FLAG(bool, FLAGS_quic_reloadable_flag_quic_enable_version_38, false) |
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