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annotate src/http/v3/ngx_http_v3.h @ 8681:cb8185bd0507 quic

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HTTP/3: added comment.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 12 Jan 2021 21:08:55 +0000
parents e1eb7f4ca9f1
children 6bd8ed493b85
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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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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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15 #include <ngx_http_v3_parse.h>
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17
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18 #define NGX_HTTP_V3_ALPN_ADVERTISE "\x02h3"
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19 #define NGX_HTTP_V3_ALPN_DRAFT_FMT "\x05h3-%02uD"
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21 #define NGX_HTTP_V3_VARLEN_INT_LEN 4
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22 #define NGX_HTTP_V3_PREFIX_INT_LEN 11
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23
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24 #define NGX_HTTP_V3_STREAM_CONTROL 0x00
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25 #define NGX_HTTP_V3_STREAM_PUSH 0x01
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26 #define NGX_HTTP_V3_STREAM_ENCODER 0x02
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27 #define NGX_HTTP_V3_STREAM_DECODER 0x03
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28
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29 #define NGX_HTTP_V3_FRAME_DATA 0x00
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30 #define NGX_HTTP_V3_FRAME_HEADERS 0x01
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31 #define NGX_HTTP_V3_FRAME_CANCEL_PUSH 0x03
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32 #define NGX_HTTP_V3_FRAME_SETTINGS 0x04
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33 #define NGX_HTTP_V3_FRAME_PUSH_PROMISE 0x05
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34 #define NGX_HTTP_V3_FRAME_GOAWAY 0x07
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35 #define NGX_HTTP_V3_FRAME_MAX_PUSH_ID 0x0d
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36
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37 #define NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY 0x01
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38 #define NGX_HTTP_V3_PARAM_MAX_HEADER_LIST_SIZE 0x06
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39 #define NGX_HTTP_V3_PARAM_BLOCKED_STREAMS 0x07
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40
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41 #define NGX_HTTP_V3_STREAM_CLIENT_CONTROL 0
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42 #define NGX_HTTP_V3_STREAM_SERVER_CONTROL 1
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43 #define NGX_HTTP_V3_STREAM_CLIENT_ENCODER 2
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44 #define NGX_HTTP_V3_STREAM_SERVER_ENCODER 3
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45 #define NGX_HTTP_V3_STREAM_CLIENT_DECODER 4
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46 #define NGX_HTTP_V3_STREAM_SERVER_DECODER 5
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47 #define NGX_HTTP_V3_MAX_KNOWN_STREAM 6
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48
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49 #define NGX_HTTP_V3_DEFAULT_MAX_FIELD_SIZE 4096
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50 #define NGX_HTTP_V3_DEFAULT_MAX_TABLE_CAPACITY 16384
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51 #define NGX_HTTP_V3_DEFAULT_MAX_BLOCKED_STREAMS 16
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52 #define NGX_HTTP_V3_DEFAULT_MAX_CONCURRENT_PUSHES 10
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53
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54 /* HTTP/3 errors */
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55 #define NGX_HTTP_V3_ERR_NO_ERROR 0x100
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56 #define NGX_HTTP_V3_ERR_GENERAL_PROTOCOL_ERROR 0x101
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57 #define NGX_HTTP_V3_ERR_INTERNAL_ERROR 0x102
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58 #define NGX_HTTP_V3_ERR_STREAM_CREATION_ERROR 0x103
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59 #define NGX_HTTP_V3_ERR_CLOSED_CRITICAL_STREAM 0x104
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60 #define NGX_HTTP_V3_ERR_FRAME_UNEXPECTED 0x105
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61 #define NGX_HTTP_V3_ERR_FRAME_ERROR 0x106
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62 #define NGX_HTTP_V3_ERR_EXCESSIVE_LOAD 0x107
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63 #define NGX_HTTP_V3_ERR_ID_ERROR 0x108
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64 #define NGX_HTTP_V3_ERR_SETTINGS_ERROR 0x109
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65 #define NGX_HTTP_V3_ERR_MISSING_SETTINGS 0x10a
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66 #define NGX_HTTP_V3_ERR_REQUEST_REJECTED 0x10b
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67 #define NGX_HTTP_V3_ERR_REQUEST_CANCELLED 0x10c
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68 #define NGX_HTTP_V3_ERR_REQUEST_INCOMPLETE 0x10d
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69 #define NGX_HTTP_V3_ERR_CONNECT_ERROR 0x10f
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70 #define NGX_HTTP_V3_ERR_VERSION_FALLBACK 0x110
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71
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72 /* QPACK errors */
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73 #define NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED 0x200
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74 #define NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR 0x201
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75 #define NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR 0x202
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76
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77
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78 #define ngx_http_v3_get_module_srv_conf(c, module) \
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79 ngx_http_get_module_srv_conf( \
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80 ((ngx_http_v3_connection_t *) c->quic->parent->data)->hc.conf_ctx, \
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81 module)
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82
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83 #define ngx_http_v3_finalize_connection(c, code, reason) \
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84 ngx_quic_finalize_connection(c->quic->parent, code, reason)
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85
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86
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87 typedef struct {
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88 ngx_quic_tp_t quic;
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89 size_t max_field_size;
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90 size_t max_table_capacity;
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91 ngx_uint_t max_blocked_streams;
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92 ngx_uint_t max_concurrent_pushes;
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93 } ngx_http_v3_srv_conf_t;
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94
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95
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96 typedef struct {
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97 ngx_flag_t push_preload;
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98 ngx_flag_t push;
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99 ngx_array_t *pushes;
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100 } ngx_http_v3_loc_conf_t;
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101
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102
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103 typedef struct {
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104 ngx_str_t name;
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105 ngx_str_t value;
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106 } ngx_http_v3_header_t;
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107
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108
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109 typedef struct {
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110 ngx_http_v3_header_t **elts;
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111 ngx_uint_t nelts;
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112 ngx_uint_t base;
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113 size_t size;
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114 size_t capacity;
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115 } ngx_http_v3_dynamic_table_t;
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116
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117
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118 typedef struct {
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119 /* the http connection must be first */
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120 ngx_http_connection_t hc;
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121 ngx_http_v3_dynamic_table_t table;
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122
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123 ngx_queue_t blocked;
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124 ngx_uint_t nblocked;
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125
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126 ngx_queue_t pushing;
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127 ngx_uint_t npushing;
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128 uint64_t next_push_id;
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129 uint64_t max_push_id;
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130
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131 ngx_connection_t *known_streams[NGX_HTTP_V3_MAX_KNOWN_STREAM];
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132 } ngx_http_v3_connection_t;
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133
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134
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135 void ngx_http_v3_init(ngx_connection_t *c);
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136 ngx_int_t ngx_http_v3_parse_request_body(ngx_http_request_t *r, ngx_buf_t *b,
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137 ngx_http_chunked_t *ctx);
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138
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139 uintptr_t ngx_http_v3_encode_varlen_int(u_char *p, uint64_t value);
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140 uintptr_t ngx_http_v3_encode_prefix_int(u_char *p, uint64_t value,
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141 ngx_uint_t prefix);
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142
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143 uintptr_t ngx_http_v3_encode_header_block_prefix(u_char *p,
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144 ngx_uint_t insert_count, ngx_uint_t sign, ngx_uint_t delta_base);
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145 uintptr_t ngx_http_v3_encode_header_ri(u_char *p, ngx_uint_t dynamic,
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146 ngx_uint_t index);
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147 uintptr_t ngx_http_v3_encode_header_lri(u_char *p, ngx_uint_t dynamic,
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148 ngx_uint_t index, u_char *data, size_t len);
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149 uintptr_t ngx_http_v3_encode_header_l(u_char *p, ngx_str_t *name,
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150 ngx_str_t *value);
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151 uintptr_t ngx_http_v3_encode_header_pbi(u_char *p, ngx_uint_t index);
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152 uintptr_t ngx_http_v3_encode_header_lpbi(u_char *p, ngx_uint_t index,
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153 u_char *data, size_t len);
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154
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155 ngx_int_t ngx_http_v3_init_session(ngx_connection_t *c);
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156 void ngx_http_v3_init_uni_stream(ngx_connection_t *c);
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157 ngx_connection_t *ngx_http_v3_create_push_stream(ngx_connection_t *c,
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158 uint64_t push_id);
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159 ngx_int_t ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
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160 ngx_uint_t index, ngx_str_t *value);
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161 ngx_int_t ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name,
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162 ngx_str_t *value);
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163 ngx_int_t ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity);
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164 ngx_int_t ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index);
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165 ngx_int_t ngx_http_v3_ack_header(ngx_connection_t *c, ngx_uint_t stream_id);
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166 ngx_int_t ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id);
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167 ngx_int_t ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc);
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168 ngx_int_t ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index,
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169 ngx_str_t *name, ngx_str_t *value);
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170 ngx_int_t ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index,
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171 ngx_str_t *name, ngx_str_t *value);
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172 ngx_int_t ngx_http_v3_decode_insert_count(ngx_connection_t *c,
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173 ngx_uint_t *insert_count);
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174 ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c,
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175 ngx_uint_t insert_count);
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176 ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id,
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177 uint64_t value);
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178 ngx_int_t ngx_http_v3_set_max_push_id(ngx_connection_t *c,
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179 uint64_t max_push_id);
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180 ngx_int_t ngx_http_v3_cancel_push(ngx_connection_t *c, uint64_t push_id);
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181
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182 ngx_int_t ngx_http_v3_client_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
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183 ngx_uint_t index, ngx_str_t *value);
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184 ngx_int_t ngx_http_v3_client_insert(ngx_connection_t *c, ngx_str_t *name,
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185 ngx_str_t *value);
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186 ngx_int_t ngx_http_v3_client_set_capacity(ngx_connection_t *c,
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187 ngx_uint_t capacity);
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188 ngx_int_t ngx_http_v3_client_duplicate(ngx_connection_t *c, ngx_uint_t index);
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189 ngx_int_t ngx_http_v3_client_ack_header(ngx_connection_t *c,
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190 ngx_uint_t stream_id);
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191 ngx_int_t ngx_http_v3_client_cancel_stream(ngx_connection_t *c,
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192 ngx_uint_t stream_id);
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193 ngx_int_t ngx_http_v3_client_inc_insert_count(ngx_connection_t *c,
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194 ngx_uint_t inc);
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195
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196
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197 extern ngx_module_t ngx_http_v3_module;
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198
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199
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200 #endif /* _NGX_HTTP_V3_H_INCLUDED_ */