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annotate src/http/v3/ngx_http_v3.h @ 9299:2706b60dc225 default tip

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Core: error logging rate limiting. With this change, error logging to files can be rate-limited with the "rate=" parameter. The parameter specifies allowed log messages rate to a particular file (per worker), in messages per second (m/s). By default, "rate=1000m/s" is used. Rate limiting is implemented using the "leaky bucket" method, similarly to the limit_req module. Maximum burst size is set to the number of log messages per second for each severity level, so "error" messages are logged even if the rate limit is hit by "info" messages (but not vice versa). When the limit is reached for a particular level, the "too many log messages, limiting" message is logged at this level. If debug logging is enabled, either for the particular log file or for the particular connection, rate limiting is not used.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 25 Jun 2024 22:58:56 +0300
parents 4939fd04737f
children
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1
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2 /*
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3 * Copyright (C) Roman Arutyunyan
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_HTTP_V3_H_INCLUDED_
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9 #define _NGX_HTTP_V3_H_INCLUDED_
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_http.h>
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16 #include <ngx_http_v3_parse.h>
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17 #include <ngx_http_v3_encode.h>
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18 #include <ngx_http_v3_uni.h>
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19 #include <ngx_http_v3_table.h>
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20
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21
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22 #define NGX_HTTP_V3_ALPN_PROTO "\x02h3"
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23 #define NGX_HTTP_V3_HQ_ALPN_PROTO "\x0Ahq-interop"
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24 #define NGX_HTTP_V3_HQ_PROTO "hq-interop"
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26 #define NGX_HTTP_V3_VARLEN_INT_LEN 4
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27 #define NGX_HTTP_V3_PREFIX_INT_LEN 11
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28
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29 #define NGX_HTTP_V3_STREAM_CONTROL 0x00
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30 #define NGX_HTTP_V3_STREAM_PUSH 0x01
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31 #define NGX_HTTP_V3_STREAM_ENCODER 0x02
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32 #define NGX_HTTP_V3_STREAM_DECODER 0x03
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33
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34 #define NGX_HTTP_V3_FRAME_DATA 0x00
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35 #define NGX_HTTP_V3_FRAME_HEADERS 0x01
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36 #define NGX_HTTP_V3_FRAME_CANCEL_PUSH 0x03
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37 #define NGX_HTTP_V3_FRAME_SETTINGS 0x04
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38 #define NGX_HTTP_V3_FRAME_PUSH_PROMISE 0x05
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39 #define NGX_HTTP_V3_FRAME_GOAWAY 0x07
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40 #define NGX_HTTP_V3_FRAME_MAX_PUSH_ID 0x0d
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41
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42 #define NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY 0x01
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43 #define NGX_HTTP_V3_PARAM_MAX_FIELD_SECTION_SIZE 0x06
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44 #define NGX_HTTP_V3_PARAM_BLOCKED_STREAMS 0x07
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46 #define NGX_HTTP_V3_MAX_TABLE_CAPACITY 4096
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48 #define NGX_HTTP_V3_STREAM_CLIENT_CONTROL 0
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49 #define NGX_HTTP_V3_STREAM_SERVER_CONTROL 1
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50 #define NGX_HTTP_V3_STREAM_CLIENT_ENCODER 2
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51 #define NGX_HTTP_V3_STREAM_SERVER_ENCODER 3
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52 #define NGX_HTTP_V3_STREAM_CLIENT_DECODER 4
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53 #define NGX_HTTP_V3_STREAM_SERVER_DECODER 5
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54 #define NGX_HTTP_V3_MAX_KNOWN_STREAM 6
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55 #define NGX_HTTP_V3_MAX_UNI_STREAMS 3
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56
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57 /* HTTP/3 errors */
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58 #define NGX_HTTP_V3_ERR_NO_ERROR 0x100
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59 #define NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR 0x101
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60 #define NGX_HTTP_V3_ERR_INTERNAL_ERROR 0x102
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61 #define NGX_HTTP_V3_ERR_STREAM_CREATION_ERROR 0x103
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62 #define NGX_HTTP_V3_ERR_CLOSED_CRITICAL_STREAM 0x104
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63 #define NGX_HTTP_V3_ERR_FRAME_UNEXPECTED 0x105
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64 #define NGX_HTTP_V3_ERR_FRAME_ERROR 0x106
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65 #define NGX_HTTP_V3_ERR_EXCESSIVE_LOAD 0x107
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66 #define NGX_HTTP_V3_ERR_ID_ERROR 0x108
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67 #define NGX_HTTP_V3_ERR_SETTINGS_ERROR 0x109
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68 #define NGX_HTTP_V3_ERR_MISSING_SETTINGS 0x10a
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69 #define NGX_HTTP_V3_ERR_REQUEST_REJECTED 0x10b
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70 #define NGX_HTTP_V3_ERR_REQUEST_CANCELLED 0x10c
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71 #define NGX_HTTP_V3_ERR_REQUEST_INCOMPLETE 0x10d
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72 #define NGX_HTTP_V3_ERR_CONNECT_ERROR 0x10f
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73 #define NGX_HTTP_V3_ERR_VERSION_FALLBACK 0x110
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74
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75 /* QPACK errors */
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76 #define NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED 0x200
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77 #define NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR 0x201
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78 #define NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR 0x202
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81 #define ngx_http_v3_get_session(c) \
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82 ((ngx_http_v3_session_t *) ((c)->quic ? (c)->quic->parent->data \
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83 : (c)->data))
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85 #define ngx_http_quic_get_connection(c) \
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86 (ngx_http_v3_get_session(c)->http_connection)
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87
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88 #define ngx_http_v3_get_module_loc_conf(c, module) \
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89 ngx_http_get_module_loc_conf(ngx_http_quic_get_connection(c)->conf_ctx, \
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90 module)
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92 #define ngx_http_v3_get_module_srv_conf(c, module) \
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93 ngx_http_get_module_srv_conf(ngx_http_quic_get_connection(c)->conf_ctx, \
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94 module)
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96 #define ngx_http_v3_finalize_connection(c, code, reason) \
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97 ngx_quic_finalize_connection((c)->quic ? (c)->quic->parent : (c), \
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98 code, reason)
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100 #define ngx_http_v3_shutdown_connection(c, code, reason) \
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101 ngx_quic_shutdown_connection((c)->quic ? (c)->quic->parent : (c), \
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102 code, reason)
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103
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105 typedef struct {
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106 ngx_flag_t enable;
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107 ngx_flag_t enable_hq;
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108 size_t max_table_capacity;
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109 ngx_uint_t max_blocked_streams;
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110 ngx_uint_t max_concurrent_streams;
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111 ngx_quic_conf_t quic;
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112 } ngx_http_v3_srv_conf_t;
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113
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114
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115 struct ngx_http_v3_parse_s {
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116 size_t header_limit;
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117 ngx_http_v3_parse_headers_t headers;
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118 ngx_http_v3_parse_data_t body;
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119 ngx_array_t *cookies;
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120 };
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121
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122
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123 struct ngx_http_v3_session_s {
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124 ngx_http_connection_t *http_connection;
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125
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126 ngx_http_v3_dynamic_table_t table;
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127
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128 ngx_event_t keepalive;
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129 ngx_uint_t nrequests;
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130
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131 ngx_queue_t blocked;
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132 ngx_uint_t nblocked;
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133
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134 uint64_t next_request_id;
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135
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136 off_t total_bytes;
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137 off_t payload_bytes;
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138
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139 unsigned goaway:1;
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140 unsigned hq:1;
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141
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142 ngx_connection_t *known_streams[NGX_HTTP_V3_MAX_KNOWN_STREAM];
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143 };
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144
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145
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146 void ngx_http_v3_init_stream(ngx_connection_t *c);
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147 void ngx_http_v3_reset_stream(ngx_connection_t *c);
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148 ngx_int_t ngx_http_v3_init_session(ngx_connection_t *c);
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149 ngx_int_t ngx_http_v3_check_flood(ngx_connection_t *c);
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150 ngx_int_t ngx_http_v3_init(ngx_connection_t *c);
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diff changeset
151 void ngx_http_v3_shutdown(ngx_connection_t *c);
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152
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153 ngx_int_t ngx_http_v3_read_request_body(ngx_http_request_t *r);
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diff changeset
154 ngx_int_t ngx_http_v3_read_unbuffered_request_body(ngx_http_request_t *r);
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155
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156
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157 extern ngx_module_t ngx_http_v3_module;
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158
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159
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160 #endif /* _NGX_HTTP_V3_H_INCLUDED_ */