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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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77 | 77 |
78 // If true, only open limited number of quic sessions per epoll event. Leave the | 78 // If true, only open limited number of quic sessions per epoll event. Leave the |
79 // rest to next event. This flag can be turned on only if | 79 // rest to next event. This flag can be turned on only if |
80 // --quic_buffer_packet_till_chlo is true. | 80 // --quic_buffer_packet_till_chlo is true. |
81 QUIC_FLAG(bool, FLAGS_quic_limit_num_new_sessions_per_epoll_loop, true) | 81 QUIC_FLAG(bool, FLAGS_quic_limit_num_new_sessions_per_epoll_loop, true) |
82 | 82 |
83 // If true, lazy allocate and early release memeory used in | 83 // If true, lazy allocate and early release memeory used in |
84 // QuicStreamSequencerBuffer to buffer incoming data. | 84 // QuicStreamSequencerBuffer to buffer incoming data. |
85 QUIC_FLAG(bool, FLAGS_quic_reduce_sequencer_buffer_memory_life_time, true) | 85 QUIC_FLAG(bool, FLAGS_quic_reduce_sequencer_buffer_memory_life_time, true) |
86 | 86 |
87 // If true, allow server address change if it is because of mapped ipv4 address. | |
88 QUIC_FLAG(bool, FLAGS_quic_allow_server_address_change_for_mapped_ipv4, true) | |
89 | |
90 // If true, disables QUIC version less than 34. | 87 // If true, disables QUIC version less than 34. |
91 QUIC_FLAG(bool, FLAGS_quic_disable_pre_34, false) | 88 QUIC_FLAG(bool, FLAGS_quic_disable_pre_34, false) |
92 | 89 |
93 // When true, decode the packet number from the largest received packet, rather | |
94 // than the most recent. | |
95 QUIC_FLAG(bool, FLAGS_quic_packet_numbers_largest_received, true) | |
96 | |
97 // Only close the connection on the 5th RTO client side when the 5RTO option | 90 // Only close the connection on the 5th RTO client side when the 5RTO option |
98 // is enabled. | 91 // is enabled. |
99 QUIC_FLAG(bool, FLAGS_quic_only_5rto_client_side, true) | 92 QUIC_FLAG(bool, FLAGS_quic_only_5rto_client_side, true) |
100 | 93 |
101 // If true, QUIC server push will enabled by default. | 94 // If true, QUIC server push will enabled by default. |
102 QUIC_FLAG(bool, FLAGS_quic_enable_server_push_by_default, true) | 95 QUIC_FLAG(bool, FLAGS_quic_enable_server_push_by_default, true) |
103 | 96 |
104 // Only inform the QuicSentPacketManager of packets that were sent, | 97 // Only inform the QuicSentPacketManager of packets that were sent, |
105 // not those that we tried to send. | 98 // not those that we tried to send. |
106 QUIC_FLAG(bool, FLAGS_quic_only_track_sent_packets, true) | 99 QUIC_FLAG(bool, FLAGS_quic_only_track_sent_packets, true) |
107 | 100 |
108 // If true, connection is closed when packet generator is trying to | |
109 // add a frame which alone cannot fit into a packet. | |
110 QUIC_FLAG(bool, FLAGS_quic_close_connection_on_huge_frames, true) | |
111 | |
112 // As the Linux kernel does, limit QUIC's Cubic congestion control to | 101 // As the Linux kernel does, limit QUIC's Cubic congestion control to |
113 // only increase the CWND 1 packet for every two packets acked. | 102 // only increase the CWND 1 packet for every two packets acked. |
114 QUIC_FLAG(bool, FLAGS_quic_limit_cubic_cwnd_increase, true) | 103 QUIC_FLAG(bool, FLAGS_quic_limit_cubic_cwnd_increase, true) |
115 | 104 |
116 // If true, export reject reasons for all rejects, i.e., rejects, | 105 // If true, export reject reasons for all rejects, i.e., rejects, |
117 // stateless rejects and cheap stateless rejects. | 106 // stateless rejects and cheap stateless rejects. |
118 QUIC_FLAG(bool, FLAGS_quic_export_rej_for_all_rejects, true) | 107 QUIC_FLAG(bool, FLAGS_quic_export_rej_for_all_rejects, true) |
119 | 108 |
120 // Allow large send deltas to be used as RTT samples. | 109 // Allow large send deltas to be used as RTT samples. |
121 QUIC_FLAG(bool, FLAGS_quic_allow_large_send_deltas, true) | 110 QUIC_FLAG(bool, FLAGS_quic_allow_large_send_deltas, true) |
122 | 111 |
123 // Engage early retransmit anytime the largest acked is greater than | 112 // Engage early retransmit anytime the largest acked is greater than |
124 // or equal to the largest retransmittable packet. | 113 // or equal to the largest retransmittable packet. |
125 QUIC_FLAG(bool, FLAGS_quic_largest_sent_retransmittable, true) | 114 QUIC_FLAG(bool, FLAGS_quic_largest_sent_retransmittable, true) |
126 | 115 |
127 // If true, close connection when sequencer buffer enter into unexpected state. | |
128 QUIC_FLAG(bool, FLAGS_quic_stream_sequencer_buffer_debug, true) | |
129 | |
130 // If true, release QuicCryptoStream\'s read buffer when stream are less | 116 // If true, release QuicCryptoStream\'s read buffer when stream are less |
131 // frequently used. | 117 // frequently used. |
132 QUIC_FLAG(bool, FLAGS_quic_release_crypto_stream_buffer, false) | 118 QUIC_FLAG(bool, FLAGS_quic_release_crypto_stream_buffer, false) |
133 | 119 |
134 // Use a more conservative backoff of 2x instead of 1.5x for handshake | 120 // Use a more conservative backoff of 2x instead of 1.5x for handshake |
135 // retransmissions, as well as a larger minimum. | 121 // retransmissions, as well as a larger minimum. |
136 QUIC_FLAG(bool, FLAGS_quic_conservative_handshake_retransmits, true) | 122 QUIC_FLAG(bool, FLAGS_quic_conservative_handshake_retransmits, true) |
137 | 123 |
138 // If true, buffer packets while parsing public headers instead of parsing down | 124 // If true, buffer packets while parsing public headers instead of parsing down |
139 // if CHLO is already buffered. | 125 // if CHLO is already buffered. |
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159 // and times out. | 145 // and times out. |
160 QUIC_FLAG(bool, FLAGS_quic_send_push_stream_timed_out_error, true) | 146 QUIC_FLAG(bool, FLAGS_quic_send_push_stream_timed_out_error, true) |
161 | 147 |
162 // If true, enable bugfix for FHOL experiment (fin-only | 148 // If true, enable bugfix for FHOL experiment (fin-only |
163 // WritevStreamData). | 149 // WritevStreamData). |
164 QUIC_FLAG(bool, FLAGS_quic_bugfix_fhol_writev_fin_only_v2, true) | 150 QUIC_FLAG(bool, FLAGS_quic_bugfix_fhol_writev_fin_only_v2, true) |
165 | 151 |
166 // If true, v33 QUIC client uses 1 bit to specify 8-byte connection id in | 152 // If true, v33 QUIC client uses 1 bit to specify 8-byte connection id in |
167 // public flag. | 153 // public flag. |
168 QUIC_FLAG(bool, FLAGS_quic_remove_v33_hacks2, false) | 154 QUIC_FLAG(bool, FLAGS_quic_remove_v33_hacks2, false) |
| 155 |
| 156 // If true, limits QUIC uncompressed headers to 16K. |
| 157 QUIC_FLAG(bool, FLAGS_quic_limit_uncompressed_headers, false) |
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