Mercurial > hg > nginx-quic
annotate src/http/v3/ngx_http_v3_module.c @ 7951:c9538aef3211 quic
HTTP/3: refactored dynamic table implementation.
Previously dynamic table was not functional because of zero limit on its size
set by default. Now the following changes enable it:
- new directives to set SETTINGS_QPACK_MAX_TABLE_CAPACITY and
SETTINGS_QPACK_BLOCKED_STREAMS
- send settings with SETTINGS_QPACK_MAX_TABLE_CAPACITY and
SETTINGS_QPACK_BLOCKED_STREAMS to the client
- send Insert Count Increment to the client
- send Header Acknowledgement to the client
- evict old dynamic table entries on overflow
- decode Required Insert Count from client
- block stream if Required Insert Count is not reached
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 02 Jul 2020 15:34:05 +0300 |
parents | 032cb35ce758 |
children | 0d2b2664b41c |
rev | line source |
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7681 | 1 |
2 /* | |
3 * Copyright (C) Nginx, Inc. | |
4 * Copyright (C) Roman Arutyunyan | |
5 */ | |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
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13 static char *ngx_http_v3_max_ack_delay(ngx_conf_t *cf, void *post, void *data); |
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14 static char *ngx_http_v3_max_udp_payload_size(ngx_conf_t *cf, void *post, |
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15 void *data); |
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16 |
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17 |
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18 static ngx_conf_post_t ngx_http_v3_max_ack_delay_post = |
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19 { ngx_http_v3_max_ack_delay }; |
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20 static ngx_conf_post_t ngx_http_v3_max_udp_payload_size_post = |
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21 { ngx_http_v3_max_udp_payload_size }; |
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22 static ngx_conf_num_bounds_t ngx_http_v3_ack_delay_exponent_bounds = |
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23 { ngx_conf_check_num_bounds, 0, 20 }; |
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24 static ngx_conf_num_bounds_t ngx_http_v3_active_connection_id_limit_bounds = |
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25 { ngx_conf_check_num_bounds, 2, -1 }; |
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26 |
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27 |
7681 | 28 static ngx_command_t ngx_http_v3_commands[] = { |
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29 |
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30 { ngx_string("quic_max_idle_timeout"), |
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31 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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32 ngx_conf_set_msec_slot, |
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33 NGX_HTTP_SRV_CONF_OFFSET, |
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34 offsetof(ngx_http_v3_srv_conf_t, quic.max_idle_timeout), |
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35 NULL }, |
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36 |
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37 { ngx_string("quic_max_ack_delay"), |
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38 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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39 ngx_conf_set_msec_slot, |
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40 NGX_HTTP_SRV_CONF_OFFSET, |
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41 offsetof(ngx_http_v3_srv_conf_t, quic.max_ack_delay), |
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42 &ngx_http_v3_max_ack_delay_post }, |
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43 |
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44 { ngx_string("quic_max_udp_payload_size"), |
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45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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46 ngx_conf_set_size_slot, |
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47 NGX_HTTP_SRV_CONF_OFFSET, |
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48 offsetof(ngx_http_v3_srv_conf_t, quic.max_udp_payload_size), |
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49 &ngx_http_v3_max_udp_payload_size_post }, |
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50 |
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51 { ngx_string("quic_initial_max_data"), |
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52 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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53 ngx_conf_set_size_slot, |
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54 NGX_HTTP_SRV_CONF_OFFSET, |
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55 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_data), |
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56 NULL }, |
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57 |
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58 { ngx_string("quic_initial_max_stream_data_bidi_local"), |
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59 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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60 ngx_conf_set_size_slot, |
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61 NGX_HTTP_SRV_CONF_OFFSET, |
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62 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_stream_data_bidi_local), |
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63 NULL }, |
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64 |
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65 { ngx_string("quic_initial_max_stream_data_bidi_remote"), |
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66 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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67 ngx_conf_set_size_slot, |
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68 NGX_HTTP_SRV_CONF_OFFSET, |
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69 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_stream_data_bidi_remote), |
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70 NULL }, |
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71 |
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72 { ngx_string("quic_initial_max_stream_data_uni"), |
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73 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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74 ngx_conf_set_size_slot, |
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75 NGX_HTTP_SRV_CONF_OFFSET, |
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76 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_stream_data_uni), |
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77 NULL }, |
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78 |
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79 { ngx_string("quic_initial_max_streams_bidi"), |
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80 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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81 ngx_conf_set_num_slot, |
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82 NGX_HTTP_SRV_CONF_OFFSET, |
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83 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_streams_bidi), |
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84 NULL }, |
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85 |
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86 { ngx_string("quic_initial_max_streams_uni"), |
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87 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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88 ngx_conf_set_num_slot, |
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89 NGX_HTTP_SRV_CONF_OFFSET, |
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90 offsetof(ngx_http_v3_srv_conf_t, quic.initial_max_streams_uni), |
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91 NULL }, |
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92 |
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93 { ngx_string("quic_ack_delay_exponent"), |
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94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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95 ngx_conf_set_num_slot, |
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96 NGX_HTTP_SRV_CONF_OFFSET, |
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97 offsetof(ngx_http_v3_srv_conf_t, quic.ack_delay_exponent), |
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98 &ngx_http_v3_ack_delay_exponent_bounds }, |
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99 |
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100 { ngx_string("quic_active_migration"), |
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101 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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102 ngx_conf_set_num_slot, |
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103 NGX_HTTP_SRV_CONF_OFFSET, |
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104 offsetof(ngx_http_v3_srv_conf_t, quic.disable_active_migration), |
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105 NULL }, |
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106 |
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107 { ngx_string("quic_active_connection_id_limit"), |
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108 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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109 ngx_conf_set_num_slot, |
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110 NGX_HTTP_SRV_CONF_OFFSET, |
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111 offsetof(ngx_http_v3_srv_conf_t, quic.active_connection_id_limit), |
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112 &ngx_http_v3_active_connection_id_limit_bounds }, |
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113 |
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114 { ngx_string("quic_retry"), |
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115 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, |
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116 ngx_conf_set_flag_slot, |
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117 NGX_HTTP_SRV_CONF_OFFSET, |
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118 offsetof(ngx_http_v3_srv_conf_t, quic.retry), |
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119 NULL }, |
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120 |
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121 { ngx_string("http3_max_field_size"), |
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122 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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123 ngx_conf_set_size_slot, |
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124 NGX_HTTP_SRV_CONF_OFFSET, |
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125 offsetof(ngx_http_v3_srv_conf_t, max_field_size), |
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126 NULL }, |
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127 |
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128 { ngx_string("http3_max_table_capacity"), |
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129 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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130 ngx_conf_set_size_slot, |
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131 NGX_HTTP_SRV_CONF_OFFSET, |
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132 offsetof(ngx_http_v3_srv_conf_t, max_table_capacity), |
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133 NULL }, |
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134 |
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135 { ngx_string("http3_max_blocked_streams"), |
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136 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, |
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137 ngx_conf_set_num_slot, |
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138 NGX_HTTP_SRV_CONF_OFFSET, |
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139 offsetof(ngx_http_v3_srv_conf_t, max_blocked_streams), |
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140 NULL }, |
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141 |
7681 | 142 ngx_null_command |
143 }; | |
144 | |
145 | |
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146 static ngx_int_t ngx_http_variable_quic(ngx_http_request_t *r, |
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147 ngx_http_variable_value_t *v, uintptr_t data); |
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148 static ngx_int_t ngx_http_variable_http3(ngx_http_request_t *r, |
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149 ngx_http_variable_value_t *v, uintptr_t data); |
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150 static ngx_int_t ngx_http_v3_add_variables(ngx_conf_t *cf); |
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151 static void *ngx_http_v3_create_srv_conf(ngx_conf_t *cf); |
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152 static char *ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, |
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153 void *parent, void *child); |
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154 |
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155 |
7681 | 156 static ngx_http_module_t ngx_http_v3_module_ctx = { |
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157 ngx_http_v3_add_variables, /* preconfiguration */ |
7681 | 158 NULL, /* postconfiguration */ |
159 | |
160 NULL, /* create main configuration */ | |
161 NULL, /* init main configuration */ | |
162 | |
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163 ngx_http_v3_create_srv_conf, /* create server configuration */ |
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164 ngx_http_v3_merge_srv_conf, /* merge server configuration */ |
7681 | 165 |
166 NULL, /* create location configuration */ | |
167 NULL /* merge location configuration */ | |
168 }; | |
169 | |
170 | |
171 ngx_module_t ngx_http_v3_module = { | |
172 NGX_MODULE_V1, | |
173 &ngx_http_v3_module_ctx, /* module context */ | |
174 ngx_http_v3_commands, /* module directives */ | |
175 NGX_HTTP_MODULE, /* module type */ | |
176 NULL, /* init master */ | |
177 NULL, /* init module */ | |
178 NULL, /* init process */ | |
179 NULL, /* init thread */ | |
180 NULL, /* exit thread */ | |
181 NULL, /* exit process */ | |
182 NULL, /* exit master */ | |
183 NGX_MODULE_V1_PADDING | |
184 }; | |
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185 |
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186 |
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187 static ngx_http_variable_t ngx_http_v3_vars[] = { |
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188 { ngx_string("quic"), NULL, ngx_http_variable_quic, |
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189 0, 0, 0 }, |
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190 |
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191 { ngx_string("http3"), NULL, ngx_http_variable_http3, |
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192 0, 0, 0 }, |
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193 |
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194 ngx_http_null_variable |
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195 }; |
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196 |
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197 |
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198 static ngx_int_t |
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199 ngx_http_variable_quic(ngx_http_request_t *r, |
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200 ngx_http_variable_value_t *v, uintptr_t data) |
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201 { |
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202 if (r->connection->qs) { |
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203 |
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204 v->len = 4; |
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205 v->valid = 1; |
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206 v->no_cacheable = 1; |
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207 v->not_found = 0; |
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208 v->data = (u_char *) "quic"; |
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209 return NGX_OK; |
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210 } |
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211 |
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212 v->not_found = 1; |
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213 |
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214 return NGX_OK; |
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215 } |
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216 |
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217 |
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218 static ngx_int_t |
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219 ngx_http_variable_http3(ngx_http_request_t *r, |
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220 ngx_http_variable_value_t *v, uintptr_t data) |
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221 { |
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222 v->valid = 1; |
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223 v->no_cacheable = 1; |
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224 v->not_found = 0; |
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225 |
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226 v->data = ngx_pnalloc(r->pool, sizeof("h3-xx") - 1); |
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227 if (v->data == NULL) { |
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228 return NGX_ERROR; |
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229 } |
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230 |
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231 v->len = ngx_sprintf(v->data, "h3-%d", NGX_QUIC_DRAFT_VERSION) - v->data; |
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232 |
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233 return NGX_OK; |
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234 } |
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235 |
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236 |
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237 static ngx_int_t |
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238 ngx_http_v3_add_variables(ngx_conf_t *cf) |
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239 { |
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240 ngx_http_variable_t *var, *v; |
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241 |
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242 for (v = ngx_http_v3_vars; v->name.len; v++) { |
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243 var = ngx_http_add_variable(cf, &v->name, v->flags); |
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244 if (var == NULL) { |
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245 return NGX_ERROR; |
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246 } |
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247 |
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248 var->get_handler = v->get_handler; |
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249 var->data = v->data; |
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250 } |
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251 |
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252 return NGX_OK; |
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253 } |
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254 |
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255 |
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256 |
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257 static void * |
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258 ngx_http_v3_create_srv_conf(ngx_conf_t *cf) |
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259 { |
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260 ngx_http_v3_srv_conf_t *v3cf; |
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261 |
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262 v3cf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_srv_conf_t)); |
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263 if (v3cf == NULL) { |
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264 return NULL; |
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265 } |
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266 |
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267 /* |
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268 * set by ngx_pcalloc(): |
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269 * v3cf->quic.original_dcid = { 0, NULL }; |
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270 * v3cf->quic.initial_scid = { 0, NULL }; |
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271 * v3cf->quic.retry_scid = { 0, NULL }; |
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272 * v3cf->quic.stateless_reset_token = { 0 } |
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273 * conf->quic.preferred_address = NULL |
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274 */ |
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275 |
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276 v3cf->quic.max_idle_timeout = NGX_CONF_UNSET_MSEC; |
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277 v3cf->quic.max_ack_delay = NGX_CONF_UNSET_MSEC; |
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278 |
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279 v3cf->quic.max_udp_payload_size = NGX_CONF_UNSET_SIZE; |
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280 v3cf->quic.initial_max_data = NGX_CONF_UNSET_SIZE; |
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281 v3cf->quic.initial_max_stream_data_bidi_local = NGX_CONF_UNSET_SIZE; |
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282 v3cf->quic.initial_max_stream_data_bidi_remote = NGX_CONF_UNSET_SIZE; |
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283 v3cf->quic.initial_max_stream_data_uni = NGX_CONF_UNSET_SIZE; |
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284 v3cf->quic.initial_max_streams_bidi = NGX_CONF_UNSET_UINT; |
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285 v3cf->quic.initial_max_streams_uni = NGX_CONF_UNSET_UINT; |
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286 v3cf->quic.ack_delay_exponent = NGX_CONF_UNSET_UINT; |
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287 v3cf->quic.disable_active_migration = NGX_CONF_UNSET_UINT; |
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288 v3cf->quic.active_connection_id_limit = NGX_CONF_UNSET_UINT; |
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289 |
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290 v3cf->quic.retry = NGX_CONF_UNSET; |
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291 |
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292 v3cf->max_field_size = NGX_CONF_UNSET_SIZE; |
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293 v3cf->max_table_capacity = NGX_CONF_UNSET_SIZE; |
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294 v3cf->max_blocked_streams = NGX_CONF_UNSET_UINT; |
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295 |
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296 return v3cf; |
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297 } |
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298 |
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299 |
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300 static char * |
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301 ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
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302 { |
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303 ngx_http_v3_srv_conf_t *prev = parent; |
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304 ngx_http_v3_srv_conf_t *conf = child; |
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305 |
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306 ngx_conf_merge_msec_value(conf->quic.max_idle_timeout, |
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|
307 prev->quic.max_idle_timeout, 60000); |
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308 |
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309 ngx_conf_merge_msec_value(conf->quic.max_ack_delay, |
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310 prev->quic.max_ack_delay, |
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311 NGX_QUIC_DEFAULT_MAX_ACK_DELAY); |
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312 |
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313 ngx_conf_merge_size_value(conf->quic.max_udp_payload_size, |
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314 prev->quic.max_udp_payload_size, |
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|
315 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); |
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316 |
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317 ngx_conf_merge_size_value(conf->quic.initial_max_data, |
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318 prev->quic.initial_max_data, |
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319 16 * NGX_QUIC_STREAM_BUFSIZE); |
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320 |
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|
321 ngx_conf_merge_size_value(conf->quic.initial_max_stream_data_bidi_local, |
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322 prev->quic.initial_max_stream_data_bidi_local, |
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Added primitive flow control mechanisms.
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|
323 NGX_QUIC_STREAM_BUFSIZE); |
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324 |
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325 ngx_conf_merge_size_value(conf->quic.initial_max_stream_data_bidi_remote, |
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326 prev->quic.initial_max_stream_data_bidi_remote, |
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|
327 NGX_QUIC_STREAM_BUFSIZE); |
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328 |
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|
329 ngx_conf_merge_size_value(conf->quic.initial_max_stream_data_uni, |
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|
330 prev->quic.initial_max_stream_data_uni, |
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|
331 NGX_QUIC_STREAM_BUFSIZE); |
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332 |
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changeset
|
333 ngx_conf_merge_uint_value(conf->quic.initial_max_streams_bidi, |
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|
334 prev->quic.initial_max_streams_bidi, 16); |
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335 |
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changeset
|
336 ngx_conf_merge_uint_value(conf->quic.initial_max_streams_uni, |
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337 prev->quic.initial_max_streams_uni, 16); |
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338 |
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|
339 ngx_conf_merge_uint_value(conf->quic.ack_delay_exponent, |
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d45325e90221
Limit output QUIC packets with client max_packet_size.
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340 prev->quic.ack_delay_exponent, |
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|
341 NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT); |
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342 |
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343 ngx_conf_merge_uint_value(conf->quic.disable_active_migration, |
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changeset
|
344 prev->quic.disable_active_migration, 1); |
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345 |
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|
346 ngx_conf_merge_uint_value(conf->quic.active_connection_id_limit, |
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|
347 prev->quic.active_connection_id_limit, 2); |
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348 |
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|
349 ngx_conf_merge_value(conf->quic.retry, prev->quic.retry, 0); |
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350 |
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diff
changeset
|
351 if (conf->quic.retry) { |
7ea34e13937f
Address validation using Retry packets.
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|
352 if (RAND_bytes(conf->quic.token_key, sizeof(conf->quic.token_key)) <= 0) { |
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Address validation using Retry packets.
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|
353 return NGX_CONF_ERROR; |
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diff
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|
354 } |
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Address validation using Retry packets.
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diff
changeset
|
355 } |
7ea34e13937f
Address validation using Retry packets.
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diff
changeset
|
356 |
7949
032cb35ce758
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diff
changeset
|
357 ngx_conf_merge_size_value(conf->max_field_size, |
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diff
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|
358 prev->max_field_size, |
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|
359 NGX_HTTP_V3_DEFAULT_MAX_FIELD_SIZE); |
7860
7ea34e13937f
Address validation using Retry packets.
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diff
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360 |
7951
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HTTP/3: refactored dynamic table implementation.
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diff
changeset
|
361 ngx_conf_merge_size_value(conf->max_table_capacity, |
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diff
changeset
|
362 prev->max_table_capacity, |
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|
363 NGX_HTTP_V3_DEFAULT_MAX_TABLE_CAPACITY); |
c9538aef3211
HTTP/3: refactored dynamic table implementation.
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diff
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|
364 |
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HTTP/3: refactored dynamic table implementation.
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parents:
7949
diff
changeset
|
365 ngx_conf_merge_uint_value(conf->max_blocked_streams, |
c9538aef3211
HTTP/3: refactored dynamic table implementation.
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diff
changeset
|
366 prev->max_blocked_streams, |
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HTTP/3: refactored dynamic table implementation.
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changeset
|
367 NGX_HTTP_V3_DEFAULT_MAX_BLOCKED_STREAMS); |
c9538aef3211
HTTP/3: refactored dynamic table implementation.
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diff
changeset
|
368 |
7830
036164360fa9
HTTP/3: directives with limited values converted to post handler.
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diff
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|
369 return NGX_CONF_OK; |
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370 } |
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371 |
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372 |
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373 static char * |
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374 ngx_http_v3_max_ack_delay(ngx_conf_t *cf, void *post, void *data) |
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375 { |
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376 ngx_msec_t *sp = data; |
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377 |
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378 if (*sp > 16384) { |
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379 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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380 "\"quic_max_ack_delay\" must be less than 16384"); |
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381 |
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382 return NGX_CONF_ERROR; |
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383 } |
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384 |
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385 return NGX_CONF_OK; |
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386 } |
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387 |
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388 |
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389 static char * |
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390 ngx_http_v3_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data) |
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391 { |
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392 size_t *sp = data; |
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393 |
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394 if (*sp < NGX_QUIC_MIN_INITIAL_SIZE |
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395 || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE) |
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396 { |
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397 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
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398 "\"quic_max_udp_payload_size\" must be between " |
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399 "%d and %d", |
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400 NGX_QUIC_MIN_INITIAL_SIZE, |
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401 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); |
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402 |
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403 return NGX_CONF_ERROR; |
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404 } |
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405 |
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406 return NGX_CONF_OK; |
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407 } |