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annotate src/http/modules/ngx_http_quic_module.c @ 8482:893b3313f53c quic

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QUIC: added "quic" listen parameter in Stream. Also, introduced ngx_stream_quic_module.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 21 Jul 2020 23:08:39 +0300
parents 0d2b2664b41c
children b31c02454539
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8481
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 * Copyright (C) Roman Arutyunyan
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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13 static ngx_int_t ngx_http_variable_quic(ngx_http_request_t *r,
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14 ngx_http_variable_value_t *v, uintptr_t data);
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15 static ngx_int_t ngx_http_quic_add_variables(ngx_conf_t *cf);
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16 static void *ngx_http_quic_create_srv_conf(ngx_conf_t *cf);
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17 static char *ngx_http_quic_merge_srv_conf(ngx_conf_t *cf, void *parent,
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18 void *child);
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19 static char *ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post,
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20 void *data);
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21 static char *ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post,
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22 void *data);
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23
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24
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25 static ngx_conf_post_t ngx_http_quic_max_ack_delay_post =
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26 { ngx_http_quic_max_ack_delay };
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27 static ngx_conf_post_t ngx_http_quic_max_udp_payload_size_post =
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28 { ngx_http_quic_max_udp_payload_size };
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29 static ngx_conf_num_bounds_t ngx_http_quic_ack_delay_exponent_bounds =
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30 { ngx_conf_check_num_bounds, 0, 20 };
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31 static ngx_conf_num_bounds_t ngx_http_quic_active_connection_id_limit_bounds =
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32 { ngx_conf_check_num_bounds, 2, -1 };
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33
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34
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35 static ngx_command_t ngx_http_quic_commands[] = {
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36
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37 { ngx_string("quic_max_idle_timeout"),
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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_quic_conf_t, tp.max_idle_timeout),
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42 NULL },
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43
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44 { ngx_string("quic_max_ack_delay"),
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45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
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46 ngx_conf_set_msec_slot,
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47 NGX_HTTP_SRV_CONF_OFFSET,
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48 offsetof(ngx_quic_conf_t, tp.max_ack_delay),
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49 &ngx_http_quic_max_ack_delay_post },
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50
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51 { ngx_string("quic_max_udp_payload_size"),
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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_quic_conf_t, tp.max_udp_payload_size),
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56 &ngx_http_quic_max_udp_payload_size_post },
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57
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58 { ngx_string("quic_initial_max_data"),
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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_quic_conf_t, tp.initial_max_data),
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63 NULL },
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64
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65 { ngx_string("quic_initial_max_stream_data_bidi_local"),
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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_quic_conf_t, tp.initial_max_stream_data_bidi_local),
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70 NULL },
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71
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72 { ngx_string("quic_initial_max_stream_data_bidi_remote"),
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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_quic_conf_t, tp.initial_max_stream_data_bidi_remote),
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77 NULL },
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78
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79 { ngx_string("quic_initial_max_stream_data_uni"),
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80 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
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81 ngx_conf_set_size_slot,
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82 NGX_HTTP_SRV_CONF_OFFSET,
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83 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_uni),
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84 NULL },
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85
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86 { ngx_string("quic_initial_max_streams_bidi"),
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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_quic_conf_t, tp.initial_max_streams_bidi),
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91 NULL },
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92
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93 { ngx_string("quic_initial_max_streams_uni"),
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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_quic_conf_t, tp.initial_max_streams_uni),
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98 NULL },
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99
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100 { ngx_string("quic_ack_delay_exponent"),
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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_quic_conf_t, tp.ack_delay_exponent),
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105 &ngx_http_quic_ack_delay_exponent_bounds },
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106
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107 { ngx_string("quic_active_migration"),
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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_quic_conf_t, tp.disable_active_migration),
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112 NULL },
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113
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114 { ngx_string("quic_active_connection_id_limit"),
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115 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
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116 ngx_conf_set_num_slot,
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117 NGX_HTTP_SRV_CONF_OFFSET,
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118 offsetof(ngx_quic_conf_t, tp.active_connection_id_limit),
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119 &ngx_http_quic_active_connection_id_limit_bounds },
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120
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121 { ngx_string("quic_retry"),
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122 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
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123 ngx_conf_set_flag_slot,
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124 NGX_HTTP_SRV_CONF_OFFSET,
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125 offsetof(ngx_quic_conf_t, retry),
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126 NULL },
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127
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128 ngx_null_command
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129 };
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130
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131
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132 static ngx_http_module_t ngx_http_quic_module_ctx = {
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133 ngx_http_quic_add_variables, /* preconfiguration */
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134 NULL, /* postconfiguration */
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135
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136 NULL, /* create main configuration */
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137 NULL, /* init main configuration */
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138
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139 ngx_http_quic_create_srv_conf, /* create server configuration */
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140 ngx_http_quic_merge_srv_conf, /* merge server configuration */
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141
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142 NULL, /* create location configuration */
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143 NULL /* merge location configuration */
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144 };
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145
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146
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147 ngx_module_t ngx_http_quic_module = {
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148 NGX_MODULE_V1,
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149 &ngx_http_quic_module_ctx, /* module context */
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150 ngx_http_quic_commands, /* module directives */
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151 NGX_HTTP_MODULE, /* module type */
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152 NULL, /* init master */
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153 NULL, /* init module */
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154 NULL, /* init process */
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155 NULL, /* init thread */
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156 NULL, /* exit thread */
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157 NULL, /* exit process */
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158 NULL, /* exit master */
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159 NGX_MODULE_V1_PADDING
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160 };
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161
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162
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163 static ngx_http_variable_t ngx_http_quic_vars[] = {
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164
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165 { ngx_string("quic"), NULL, ngx_http_variable_quic, 0, 0, 0 },
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166
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167 ngx_http_null_variable
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168 };
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169
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170
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171 static ngx_int_t
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172 ngx_http_variable_quic(ngx_http_request_t *r,
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173 ngx_http_variable_value_t *v, uintptr_t data)
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174 {
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175 if (r->connection->qs) {
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176
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177 v->len = 4;
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178 v->valid = 1;
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179 v->no_cacheable = 1;
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180 v->not_found = 0;
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181 v->data = (u_char *) "quic";
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182 return NGX_OK;
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183 }
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184
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185 v->not_found = 1;
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186
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187 return NGX_OK;
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188 }
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189
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190
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191 static ngx_int_t
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192 ngx_http_quic_add_variables(ngx_conf_t *cf)
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193 {
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194 ngx_http_variable_t *var, *v;
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195
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196 for (v = ngx_http_quic_vars; v->name.len; v++) {
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197 var = ngx_http_add_variable(cf, &v->name, v->flags);
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198 if (var == NULL) {
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199 return NGX_ERROR;
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200 }
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201
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202 var->get_handler = v->get_handler;
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203 var->data = v->data;
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204 }
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205
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206 return NGX_OK;
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207 }
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208
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209
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210 static void *
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211 ngx_http_quic_create_srv_conf(ngx_conf_t *cf)
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212 {
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213 ngx_quic_conf_t *conf;
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214
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215 conf = ngx_pcalloc(cf->pool, sizeof(ngx_quic_conf_t));
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216 if (conf == NULL) {
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217 return NULL;
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218 }
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219
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220 /*
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221 * set by ngx_pcalloc():
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222 *
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223 * conf->tp.original_dcid = { 0, NULL };
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224 * conf->tp.initial_scid = { 0, NULL };
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225 * conf->tp.retry_scid = { 0, NULL };
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226 * conf->tp.stateless_reset_token = { 0 }
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227 * conf->tp.preferred_address = NULL
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228 */
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229
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230 conf->tp.max_idle_timeout = NGX_CONF_UNSET_MSEC;
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231 conf->tp.max_ack_delay = NGX_CONF_UNSET_MSEC;
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232 conf->tp.max_udp_payload_size = NGX_CONF_UNSET_SIZE;
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233 conf->tp.initial_max_data = NGX_CONF_UNSET_SIZE;
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234 conf->tp.initial_max_stream_data_bidi_local = NGX_CONF_UNSET_SIZE;
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235 conf->tp.initial_max_stream_data_bidi_remote = NGX_CONF_UNSET_SIZE;
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236 conf->tp.initial_max_stream_data_uni = NGX_CONF_UNSET_SIZE;
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237 conf->tp.initial_max_streams_bidi = NGX_CONF_UNSET_UINT;
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238 conf->tp.initial_max_streams_uni = NGX_CONF_UNSET_UINT;
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239 conf->tp.ack_delay_exponent = NGX_CONF_UNSET_UINT;
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240 conf->tp.disable_active_migration = NGX_CONF_UNSET_UINT;
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241 conf->tp.active_connection_id_limit = NGX_CONF_UNSET_UINT;
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242
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243 conf->retry = NGX_CONF_UNSET;
8482
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244 conf->require_alpn = 1;
8481
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245
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246 return conf;
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247 }
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248
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249
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250 static char *
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251 ngx_http_quic_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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252 {
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253 ngx_quic_conf_t *prev = parent;
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254 ngx_quic_conf_t *conf = child;
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255
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256 ngx_conf_merge_msec_value(conf->tp.max_idle_timeout,
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diff changeset
257 prev->tp.max_idle_timeout, 60000);
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258
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259 ngx_conf_merge_msec_value(conf->tp.max_ack_delay,
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diff changeset
260 prev->tp.max_ack_delay,
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diff changeset
261 NGX_QUIC_DEFAULT_MAX_ACK_DELAY);
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262
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diff changeset
263 ngx_conf_merge_size_value(conf->tp.max_udp_payload_size,
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diff changeset
264 prev->tp.max_udp_payload_size,
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265 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
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266
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267 ngx_conf_merge_size_value(conf->tp.initial_max_data,
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268 prev->tp.initial_max_data,
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269 16 * NGX_QUIC_STREAM_BUFSIZE);
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270
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271 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_bidi_local,
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272 prev->tp.initial_max_stream_data_bidi_local,
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273 NGX_QUIC_STREAM_BUFSIZE);
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274
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275 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_bidi_remote,
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276 prev->tp.initial_max_stream_data_bidi_remote,
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277 NGX_QUIC_STREAM_BUFSIZE);
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278
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279 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_uni,
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280 prev->tp.initial_max_stream_data_uni,
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281 NGX_QUIC_STREAM_BUFSIZE);
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282
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283 ngx_conf_merge_uint_value(conf->tp.initial_max_streams_bidi,
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284 prev->tp.initial_max_streams_bidi, 16);
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285
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286 ngx_conf_merge_uint_value(conf->tp.initial_max_streams_uni,
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287 prev->tp.initial_max_streams_uni, 16);
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288
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289 ngx_conf_merge_uint_value(conf->tp.ack_delay_exponent,
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290 prev->tp.ack_delay_exponent,
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291 NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT);
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292
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293 ngx_conf_merge_uint_value(conf->tp.disable_active_migration,
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294 prev->tp.disable_active_migration, 1);
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295
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296 ngx_conf_merge_uint_value(conf->tp.active_connection_id_limit,
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297 prev->tp.active_connection_id_limit, 2);
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298
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299 ngx_conf_merge_value(conf->retry, prev->retry, 0);
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300
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301 if (conf->retry) {
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302 if (RAND_bytes(conf->token_key, sizeof(conf->token_key)) <= 0) {
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303 return NGX_CONF_ERROR;
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304 }
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305 }
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306
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307 return NGX_CONF_OK;
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308 }
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309
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310
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311 static char *
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312 ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post, void *data)
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313 {
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314 ngx_msec_t *sp = data;
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315
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316 if (*sp > 16384) {
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317 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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318 "\"quic_max_ack_delay\" must be less than 16384");
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319
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320 return NGX_CONF_ERROR;
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321 }
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322
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323 return NGX_CONF_OK;
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324 }
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325
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326
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327 static char *
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328 ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data)
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diff changeset
329 {
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330 size_t *sp = data;
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331
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diff changeset
332 if (*sp < NGX_QUIC_MIN_INITIAL_SIZE
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diff changeset
333 || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE)
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diff changeset
334 {
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diff changeset
335 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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diff changeset
336 "\"quic_max_udp_payload_size\" must be between "
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
337 "%d and %d",
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diff changeset
338 NGX_QUIC_MIN_INITIAL_SIZE,
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diff changeset
339 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
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diff changeset
340
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341 return NGX_CONF_ERROR;
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diff changeset
342 }
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diff changeset
343
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diff changeset
344 return NGX_CONF_OK;
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diff changeset
345 }