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annotate src/http/v3/ngx_http_v3.h @ 8456:c9538aef3211 quic

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HTTP/3: refactored dynamic table implementation. Previously dynamic table was not functional because of zero limit on its size set by default. Now the following changes enable it: - new directives to set SETTINGS_QPACK_MAX_TABLE_CAPACITY and SETTINGS_QPACK_BLOCKED_STREAMS - send settings with SETTINGS_QPACK_MAX_TABLE_CAPACITY and SETTINGS_QPACK_BLOCKED_STREAMS to the client - send Insert Count Increment to the client - send Header Acknowledgement to the client - evict old dynamic table entries on overflow - decode Required Insert Count from client - block stream if Required Insert Count is not reached
author Roman Arutyunyan <arut@nginx.com>
date Thu, 02 Jul 2020 15:34:05 +0300
parents 032cb35ce758
children 1ed698947172
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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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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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18 #define NGX_HTTP_V3_ALPN(s) NGX_HTTP_V3_ALPN_DRAFT(s)
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19 #define NGX_HTTP_V3_ALPN_DRAFT(s) "\x05h3-" #s
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20 #define NGX_HTTP_V3_ALPN_ADVERTISE NGX_HTTP_V3_ALPN(NGX_QUIC_DRAFT_VERSION)
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22 #define NGX_HTTP_V3_VARLEN_INT_LEN 4
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23 #define NGX_HTTP_V3_PREFIX_INT_LEN 11
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24
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25 #define NGX_HTTP_V3_STREAM_CONTROL 0x00
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26 #define NGX_HTTP_V3_STREAM_PUSH 0x01
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27 #define NGX_HTTP_V3_STREAM_ENCODER 0x02
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28 #define NGX_HTTP_V3_STREAM_DECODER 0x03
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29
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30 #define NGX_HTTP_V3_FRAME_DATA 0x00
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31 #define NGX_HTTP_V3_FRAME_HEADERS 0x01
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32 #define NGX_HTTP_V3_FRAME_CANCEL_PUSH 0x03
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33 #define NGX_HTTP_V3_FRAME_SETTINGS 0x04
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34 #define NGX_HTTP_V3_FRAME_PUSH_PROMISE 0x05
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35 #define NGX_HTTP_V3_FRAME_GOAWAY 0x07
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36 #define NGX_HTTP_V3_FRAME_MAX_PUSH_ID 0x0d
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37
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38 #define NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY 0x01
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39 #define NGX_HTTP_V3_PARAM_MAX_HEADER_LIST_SIZE 0x06
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40 #define NGX_HTTP_V3_PARAM_BLOCKED_STREAMS 0x07
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41
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42 #define NGX_HTTP_V3_STREAM_CLIENT_CONTROL 0
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43 #define NGX_HTTP_V3_STREAM_SERVER_CONTROL 1
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44 #define NGX_HTTP_V3_STREAM_CLIENT_ENCODER 2
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45 #define NGX_HTTP_V3_STREAM_SERVER_ENCODER 3
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46 #define NGX_HTTP_V3_STREAM_CLIENT_DECODER 4
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47 #define NGX_HTTP_V3_STREAM_SERVER_DECODER 5
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48 #define NGX_HTTP_V3_MAX_KNOWN_STREAM 6
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49
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50 #define NGX_HTTP_V3_DEFAULT_MAX_FIELD_SIZE 4096
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51 #define NGX_HTTP_V3_DEFAULT_MAX_TABLE_CAPACITY 16384
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52 #define NGX_HTTP_V3_DEFAULT_MAX_BLOCKED_STREAMS 16
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55 #define ngx_http_v3_get_module_srv_conf(c, module) \
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56 ngx_http_get_module_srv_conf( \
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57 ((ngx_http_v3_connection_t *) c->qs->parent->data)->hc.conf_ctx, \
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58 module)
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59
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61 typedef struct {
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62 ngx_quic_tp_t quic;
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63 size_t max_field_size;
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64 size_t max_table_capacity;
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65 ngx_uint_t max_blocked_streams;
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66 } ngx_http_v3_srv_conf_t;
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69 typedef struct {
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70 ngx_str_t name;
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71 ngx_str_t value;
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72 } ngx_http_v3_header_t;
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73
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74
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75 typedef struct {
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76 ngx_http_v3_header_t **elts;
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77 ngx_uint_t nelts;
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78 ngx_uint_t base;
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79 size_t size;
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80 size_t capacity;
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81 } ngx_http_v3_dynamic_table_t;
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83
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84 typedef struct {
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85 ngx_http_connection_t hc;
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86 ngx_http_v3_dynamic_table_t table;
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87 ngx_queue_t blocked;
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88 ngx_uint_t nblocked;
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89 ngx_uint_t settings_sent;
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90 /* unsigned settings_sent:1; */
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91 ngx_connection_t *known_streams[NGX_HTTP_V3_MAX_KNOWN_STREAM];
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92 } ngx_http_v3_connection_t;
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93
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94
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95 ngx_int_t ngx_http_v3_parse_request(ngx_http_request_t *r, ngx_buf_t *b);
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96 ngx_int_t ngx_http_v3_parse_header(ngx_http_request_t *r, ngx_buf_t *b,
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97 ngx_uint_t allow_underscores);
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98 ngx_int_t ngx_http_v3_parse_request_body(ngx_http_request_t *r, ngx_buf_t *b,
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99 ngx_http_chunked_t *ctx);
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100 ngx_chain_t *ngx_http_v3_create_header(ngx_http_request_t *r);
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101 ngx_chain_t *ngx_http_v3_create_trailers(ngx_http_request_t *r);
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102
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103 uintptr_t ngx_http_v3_encode_varlen_int(u_char *p, uint64_t value);
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104 uintptr_t ngx_http_v3_encode_prefix_int(u_char *p, uint64_t value,
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105 ngx_uint_t prefix);
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106
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107 ngx_int_t ngx_http_v3_send_settings(ngx_connection_t *c);
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108 void ngx_http_v3_handle_client_uni_stream(ngx_connection_t *c);
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109
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110 ngx_int_t ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
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111 ngx_uint_t index, ngx_str_t *value);
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112 ngx_int_t ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name,
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113 ngx_str_t *value);
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114 ngx_int_t ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity);
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115 ngx_int_t ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index);
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116 ngx_int_t ngx_http_v3_ack_header(ngx_connection_t *c, ngx_uint_t stream_id);
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117 ngx_int_t ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id);
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118 ngx_int_t ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc);
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119 ngx_int_t ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index,
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120 ngx_str_t *name, ngx_str_t *value);
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121 ngx_int_t ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index,
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122 ngx_str_t *name, ngx_str_t *value);
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123 ngx_int_t ngx_http_v3_decode_insert_count(ngx_connection_t *c,
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124 ngx_uint_t *insert_count);
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125 ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c,
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126 ngx_uint_t insert_count);
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127 ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id,
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128 uint64_t value);
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129
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130 ngx_int_t ngx_http_v3_client_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
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131 ngx_uint_t index, ngx_str_t *value);
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132 ngx_int_t ngx_http_v3_client_insert(ngx_connection_t *c, ngx_str_t *name,
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133 ngx_str_t *value);
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134 ngx_int_t ngx_http_v3_client_set_capacity(ngx_connection_t *c,
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135 ngx_uint_t capacity);
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136 ngx_int_t ngx_http_v3_client_duplicate(ngx_connection_t *c, ngx_uint_t index);
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137 ngx_int_t ngx_http_v3_client_ack_header(ngx_connection_t *c,
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138 ngx_uint_t stream_id);
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139 ngx_int_t ngx_http_v3_client_cancel_stream(ngx_connection_t *c,
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140 ngx_uint_t stream_id);
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141 ngx_int_t ngx_http_v3_client_inc_insert_count(ngx_connection_t *c,
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142 ngx_uint_t inc);
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143
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144
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145 extern ngx_module_t ngx_http_v3_module;
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146
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147
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148 #endif /* _NGX_HTTP_V3_H_INCLUDED_ */