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annotate src/stream/ngx_stream_quic_module.c @ 8628:45db1b5c1706 quic

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QUIC: connection multiplexing per port. Also, connection migration within a single worker is implemented.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 11 Nov 2020 11:57:50 +0000
parents bed310672f39
children 279ad36f2f4b
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8482
893b3313f53c QUIC: added "quic" listen parameter in Stream.
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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_stream.h>
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12
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13 static ngx_int_t ngx_stream_variable_quic(ngx_stream_session_t *s,
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14 ngx_stream_variable_value_t *v, uintptr_t data);
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15 static ngx_int_t ngx_stream_quic_add_variables(ngx_conf_t *cf);
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16 static void *ngx_stream_quic_create_srv_conf(ngx_conf_t *cf);
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17 static char *ngx_stream_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_stream_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_stream_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_stream_quic_max_ack_delay_post =
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26 { ngx_stream_quic_max_ack_delay };
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27 static ngx_conf_post_t ngx_stream_quic_max_udp_payload_size_post =
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28 { ngx_stream_quic_max_udp_payload_size };
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29 static ngx_conf_num_bounds_t ngx_stream_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
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32 ngx_stream_quic_active_connection_id_limit_bounds =
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33 { ngx_conf_check_num_bounds, 2, -1 };
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34
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35
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36 static ngx_command_t ngx_stream_quic_commands[] = {
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37
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38 { ngx_string("quic_max_idle_timeout"),
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39 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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40 ngx_conf_set_msec_slot,
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41 NGX_STREAM_SRV_CONF_OFFSET,
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42 offsetof(ngx_quic_conf_t, tp.max_idle_timeout),
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43 NULL },
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44
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45 { ngx_string("quic_max_ack_delay"),
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46 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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47 ngx_conf_set_msec_slot,
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48 NGX_STREAM_SRV_CONF_OFFSET,
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49 offsetof(ngx_quic_conf_t, tp.max_ack_delay),
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50 &ngx_stream_quic_max_ack_delay_post },
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51
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52 { ngx_string("quic_max_udp_payload_size"),
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53 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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54 ngx_conf_set_size_slot,
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55 NGX_STREAM_SRV_CONF_OFFSET,
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56 offsetof(ngx_quic_conf_t, tp.max_udp_payload_size),
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57 &ngx_stream_quic_max_udp_payload_size_post },
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58
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59 { ngx_string("quic_initial_max_data"),
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60 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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61 ngx_conf_set_size_slot,
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62 NGX_STREAM_SRV_CONF_OFFSET,
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63 offsetof(ngx_quic_conf_t, tp.initial_max_data),
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64 NULL },
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65
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66 { ngx_string("quic_initial_max_stream_data_bidi_local"),
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67 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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68 ngx_conf_set_size_slot,
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69 NGX_STREAM_SRV_CONF_OFFSET,
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70 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_bidi_local),
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71 NULL },
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72
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73 { ngx_string("quic_initial_max_stream_data_bidi_remote"),
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74 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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75 ngx_conf_set_size_slot,
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76 NGX_STREAM_SRV_CONF_OFFSET,
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77 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_bidi_remote),
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78 NULL },
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79
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80 { ngx_string("quic_initial_max_stream_data_uni"),
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81 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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82 ngx_conf_set_size_slot,
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83 NGX_STREAM_SRV_CONF_OFFSET,
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84 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_uni),
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85 NULL },
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86
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87 { ngx_string("quic_initial_max_streams_bidi"),
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88 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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89 ngx_conf_set_num_slot,
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90 NGX_STREAM_SRV_CONF_OFFSET,
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91 offsetof(ngx_quic_conf_t, tp.initial_max_streams_bidi),
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92 NULL },
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93
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94 { ngx_string("quic_initial_max_streams_uni"),
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95 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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96 ngx_conf_set_num_slot,
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97 NGX_STREAM_SRV_CONF_OFFSET,
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98 offsetof(ngx_quic_conf_t, tp.initial_max_streams_uni),
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99 NULL },
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100
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101 { ngx_string("quic_ack_delay_exponent"),
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102 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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103 ngx_conf_set_num_slot,
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104 NGX_STREAM_SRV_CONF_OFFSET,
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105 offsetof(ngx_quic_conf_t, tp.ack_delay_exponent),
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106 &ngx_stream_quic_ack_delay_exponent_bounds },
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107
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108 { ngx_string("quic_disable_active_migration"),
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109 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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110 ngx_conf_set_flag_slot,
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111 NGX_STREAM_SRV_CONF_OFFSET,
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112 offsetof(ngx_quic_conf_t, tp.disable_active_migration),
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113 NULL },
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114
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115 { ngx_string("quic_active_connection_id_limit"),
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116 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1,
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117 ngx_conf_set_num_slot,
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118 NGX_STREAM_SRV_CONF_OFFSET,
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119 offsetof(ngx_quic_conf_t, tp.active_connection_id_limit),
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120 &ngx_stream_quic_active_connection_id_limit_bounds },
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121
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122 { ngx_string("quic_retry"),
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123 NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG,
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124 ngx_conf_set_flag_slot,
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125 NGX_STREAM_SRV_CONF_OFFSET,
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126 offsetof(ngx_quic_conf_t, retry),
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127 NULL },
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128
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129 ngx_null_command
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130 };
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131
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132
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133 static ngx_stream_module_t ngx_stream_quic_module_ctx = {
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134 ngx_stream_quic_add_variables, /* preconfiguration */
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135 NULL, /* postconfiguration */
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136
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137 NULL, /* create main configuration */
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138 NULL, /* init main configuration */
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139
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140 ngx_stream_quic_create_srv_conf, /* create server configuration */
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141 ngx_stream_quic_merge_srv_conf, /* merge server configuration */
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142 };
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143
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144
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145 ngx_module_t ngx_stream_quic_module = {
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146 NGX_MODULE_V1,
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147 &ngx_stream_quic_module_ctx, /* module context */
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148 ngx_stream_quic_commands, /* module directives */
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149 NGX_STREAM_MODULE, /* module type */
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150 NULL, /* init master */
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151 NULL, /* init module */
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152 NULL, /* init process */
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153 NULL, /* init thread */
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154 NULL, /* exit thread */
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155 NULL, /* exit process */
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156 NULL, /* exit master */
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157 NGX_MODULE_V1_PADDING
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158 };
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159
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160
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161 static ngx_stream_variable_t ngx_stream_quic_vars[] = {
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162
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163 { ngx_string("quic"), NULL, ngx_stream_variable_quic, 0, 0, 0 },
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164
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165 ngx_stream_null_variable
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166 };
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167
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168
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169 static ngx_int_t
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170 ngx_stream_variable_quic(ngx_stream_session_t *s,
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171 ngx_stream_variable_value_t *v, uintptr_t data)
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172 {
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173 if (s->connection->qs) {
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174
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175 v->len = 4;
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176 v->valid = 1;
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177 v->no_cacheable = 1;
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178 v->not_found = 0;
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179 v->data = (u_char *) "quic";
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180 return NGX_OK;
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181 }
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182
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183 v->not_found = 1;
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184
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185 return NGX_OK;
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186 }
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187
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188
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189 static ngx_int_t
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190 ngx_stream_quic_add_variables(ngx_conf_t *cf)
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191 {
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192 ngx_stream_variable_t *var, *v;
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193
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194 for (v = ngx_stream_quic_vars; v->name.len; v++) {
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195 var = ngx_stream_add_variable(cf, &v->name, v->flags);
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196 if (var == NULL) {
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197 return NGX_ERROR;
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198 }
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199
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200 var->get_handler = v->get_handler;
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201 var->data = v->data;
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202 }
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203
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204 return NGX_OK;
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205 }
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206
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207
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208 static void *
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209 ngx_stream_quic_create_srv_conf(ngx_conf_t *cf)
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210 {
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211 ngx_quic_conf_t *conf;
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212
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diff changeset
213 conf = ngx_pcalloc(cf->pool, sizeof(ngx_quic_conf_t));
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214 if (conf == NULL) {
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215 return NULL;
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diff changeset
216 }
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217
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diff changeset
218 /*
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219 * set by ngx_pcalloc():
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220 *
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221 * conf->tp.original_dcid = { 0, NULL };
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222 * conf->tp.initial_scid = { 0, NULL };
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diff changeset
223 * conf->tp.retry_scid = { 0, NULL };
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diff changeset
224 * conf->tp.stateless_reset_token = { 0 }
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diff changeset
225 * conf->tp.preferred_address = NULL
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226 * conf->require_alpn = 0;
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diff changeset
227 */
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228
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diff changeset
229 conf->tp.max_idle_timeout = NGX_CONF_UNSET_MSEC;
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230 conf->tp.max_ack_delay = NGX_CONF_UNSET_MSEC;
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diff changeset
231 conf->tp.max_udp_payload_size = NGX_CONF_UNSET_SIZE;
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diff changeset
232 conf->tp.initial_max_data = NGX_CONF_UNSET_SIZE;
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diff changeset
233 conf->tp.initial_max_stream_data_bidi_local = NGX_CONF_UNSET_SIZE;
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diff changeset
234 conf->tp.initial_max_stream_data_bidi_remote = NGX_CONF_UNSET_SIZE;
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diff changeset
235 conf->tp.initial_max_stream_data_uni = NGX_CONF_UNSET_SIZE;
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diff changeset
236 conf->tp.initial_max_streams_bidi = NGX_CONF_UNSET_UINT;
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diff changeset
237 conf->tp.initial_max_streams_uni = NGX_CONF_UNSET_UINT;
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diff changeset
238 conf->tp.ack_delay_exponent = NGX_CONF_UNSET_UINT;
8628
45db1b5c1706 QUIC: connection multiplexing per port.
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parents: 8563
diff changeset
239 conf->tp.disable_active_migration = NGX_CONF_UNSET;
8482
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diff changeset
240 conf->tp.active_connection_id_limit = NGX_CONF_UNSET_UINT;
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diff changeset
241
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diff changeset
242 conf->retry = NGX_CONF_UNSET;
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diff changeset
243
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diff changeset
244 return conf;
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diff changeset
245 }
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diff changeset
246
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diff changeset
247
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diff changeset
248 static char *
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diff changeset
249 ngx_stream_quic_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
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diff changeset
250 {
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diff changeset
251 ngx_quic_conf_t *prev = parent;
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diff changeset
252 ngx_quic_conf_t *conf = child;
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diff changeset
253
8563
bed310672f39 QUIC: moved ssl configuration pointer to quic configuration.
Vladimir Homutov <vl@nginx.com>
parents: 8482
diff changeset
254 ngx_stream_ssl_conf_t *scf;
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Vladimir Homutov <vl@nginx.com>
parents: 8482
diff changeset
255
8482
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diff changeset
256 ngx_conf_merge_msec_value(conf->tp.max_idle_timeout,
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parents:
diff changeset
257 prev->tp.max_idle_timeout, 60000);
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diff changeset
258
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diff changeset
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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parents:
diff changeset
261 NGX_QUIC_DEFAULT_MAX_ACK_DELAY);
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parents:
diff changeset
262
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parents:
diff changeset
263 ngx_conf_merge_size_value(conf->tp.max_udp_payload_size,
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
264 prev->tp.max_udp_payload_size,
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parents:
diff changeset
265 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
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266
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diff changeset
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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diff changeset
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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parents:
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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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parents:
diff changeset
291 NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT);
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292
8628
45db1b5c1706 QUIC: connection multiplexing per port.
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parents: 8563
diff changeset
293 ngx_conf_merge_value(conf->tp.disable_active_migration,
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parents: 8563
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294 prev->tp.disable_active_migration, 0);
8482
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295
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diff changeset
296 ngx_conf_merge_uint_value(conf->tp.active_connection_id_limit,
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diff changeset
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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diff changeset
301 if (conf->retry) {
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302 if (RAND_bytes(conf->token_key, sizeof(conf->token_key)) <= 0) {
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diff changeset
303 return NGX_CONF_ERROR;
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parents:
diff changeset
304 }
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parents:
diff changeset
305 }
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parents:
diff changeset
306
8563
bed310672f39 QUIC: moved ssl configuration pointer to quic configuration.
Vladimir Homutov <vl@nginx.com>
parents: 8482
diff changeset
307 scf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_ssl_module);
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Vladimir Homutov <vl@nginx.com>
parents: 8482
diff changeset
308 conf->ssl = &scf->ssl;
bed310672f39 QUIC: moved ssl configuration pointer to quic configuration.
Vladimir Homutov <vl@nginx.com>
parents: 8482
diff changeset
309
8482
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diff changeset
310 return NGX_CONF_OK;
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parents:
diff changeset
311 }
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
312
893b3313f53c QUIC: added "quic" listen parameter in Stream.
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parents:
diff changeset
313
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parents:
diff changeset
314 static char *
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parents:
diff changeset
315 ngx_stream_quic_max_ack_delay(ngx_conf_t *cf, void *post, void *data)
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parents:
diff changeset
316 {
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diff changeset
317 ngx_msec_t *sp = data;
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parents:
diff changeset
318
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diff changeset
319 if (*sp > 16384) {
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parents:
diff changeset
320 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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parents:
diff changeset
321 "\"quic_max_ack_delay\" must be less than 16384");
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parents:
diff changeset
322
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parents:
diff changeset
323 return NGX_CONF_ERROR;
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
324 }
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
325
893b3313f53c QUIC: added "quic" listen parameter in Stream.
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parents:
diff changeset
326 return NGX_CONF_OK;
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
327 }
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
328
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
329
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
330 static char *
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Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
331 ngx_stream_quic_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data)
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
332 {
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
333 size_t *sp = data;
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
334
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
335 if (*sp < NGX_QUIC_MIN_INITIAL_SIZE
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
336 || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE)
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
337 {
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
338 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
339 "\"quic_max_udp_payload_size\" must be between "
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
340 "%d and %d",
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
341 NGX_QUIC_MIN_INITIAL_SIZE,
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
342 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
343
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
344 return NGX_CONF_ERROR;
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
345 }
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
346
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
347 return NGX_CONF_OK;
893b3313f53c QUIC: added "quic" listen parameter in Stream.
Roman Arutyunyan <arut@nginx.com>
parents:
diff changeset
348 }