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annotate src/event/ngx_event_quic.h @ 8626:e0947c952d43 quic

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QUIC: multiple versions support in ALPN. Previously, a version based on NGX_QUIC_DRAFT_VERSION was always set. Now it is taken from the negotiated QUIC version that may differ.
author Sergey Kandaurov <pluknet@nginx.com>
date Tue, 10 Nov 2020 00:32:56 +0300
parents 4416b7ab0a27
children 45db1b5c1706
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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7 #ifndef _NGX_EVENT_QUIC_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 /* Supported drafts: 27, 28, 29 */
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16 #ifndef NGX_QUIC_DRAFT_VERSION
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17 #define NGX_QUIC_DRAFT_VERSION 29
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18 #endif
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19
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20 #define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */
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21 #define NGX_QUIC_MAX_LONG_HEADER 56
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22 /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */
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23
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24 #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527
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25 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT 1252
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26 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT6 1232
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27
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28 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3
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29 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25
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30
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31 #define NGX_QUIC_RETRY_TIMEOUT 3000
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32 #define NGX_QUIC_RETRY_LIFETIME 30000
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33 #define NGX_QUIC_RETRY_BUFFER_SIZE 128
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34 /* 1 flags + 4 version + 3 x (1 + 20) s/o/dcid + itag + token(44) */
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35 #define NGX_QUIC_MAX_TOKEN_SIZE 32
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36 /* sizeof(struct in6_addr) + sizeof(ngx_msec_t) up to AES-256 block size */
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37
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38 /* quic-recovery, section 6.2.2, kInitialRtt */
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39 #define NGX_QUIC_INITIAL_RTT 333 /* ms */
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40
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41 /* quic-recovery, section 6.1.1, Packet Threshold */
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42 #define NGX_QUIC_PKT_THR 3 /* packets */
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43 /* quic-recovery, section 6.1.2, Time Threshold */
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44 #define NGX_QUIC_TIME_THR 1.125
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45 #define NGX_QUIC_TIME_GRANULARITY 1 /* ms */
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46
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47 #define NGX_QUIC_CC_MIN_INTERVAL 1000 /* 1s */
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48
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49 #define NGX_QUIC_MIN_INITIAL_SIZE 1200
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50
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51 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01
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52 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02
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53
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54 #define NGX_QUIC_STREAM_BUFSIZE 65536
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55
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56 #define NGX_QUIC_MAX_CID_LEN 20
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57 #define NGX_QUIC_SERVER_CID_LEN NGX_QUIC_MAX_CID_LEN
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58
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59 #define NGX_QUIC_SR_TOKEN_LEN 16
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60
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61
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62 typedef struct {
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63 /* configurable */
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64 ngx_msec_t max_idle_timeout;
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65 ngx_msec_t max_ack_delay;
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66
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67 size_t max_udp_payload_size;
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68 size_t initial_max_data;
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69 size_t initial_max_stream_data_bidi_local;
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70 size_t initial_max_stream_data_bidi_remote;
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71 size_t initial_max_stream_data_uni;
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72 ngx_uint_t initial_max_streams_bidi;
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73 ngx_uint_t initial_max_streams_uni;
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74 ngx_uint_t ack_delay_exponent;
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75 ngx_uint_t disable_active_migration;
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76 ngx_uint_t active_connection_id_limit;
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77 ngx_str_t original_dcid;
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78 ngx_str_t initial_scid;
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79 ngx_str_t retry_scid;
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80 u_char sr_token[NGX_QUIC_SR_TOKEN_LEN];
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81 ngx_uint_t sr_enabled;
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82
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83 /* TODO */
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84 void *preferred_address;
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85 } ngx_quic_tp_t;
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86
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87
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88 typedef struct {
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89 ngx_ssl_t *ssl;
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90 ngx_quic_tp_t tp;
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91 ngx_flag_t retry;
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92 ngx_flag_t require_alpn;
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93 u_char token_key[32]; /* AES 256 */
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94 ngx_str_t sr_token_key; /* stateless reset token key */
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95 } ngx_quic_conf_t;
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96
0d2b2664b41c QUIC: added "quic" listen parameter.
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97
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98 typedef struct {
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99 uint64_t sent;
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100 uint64_t received;
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101 ngx_queue_t frames; /* reorder queue */
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102 size_t total; /* size of buffered data */
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103 } ngx_quic_frames_stream_t;
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104
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105
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106 struct ngx_quic_stream_s {
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107 ngx_rbtree_node_t node;
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108 ngx_connection_t *parent;
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109 ngx_connection_t *c;
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110 uint64_t id;
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111 uint64_t acked;
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112 uint64_t send_max_data;
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113 ngx_buf_t *b;
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114 ngx_quic_frames_stream_t fs;
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115 };
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116
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117
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118 typedef struct ngx_quic_keys_s ngx_quic_keys_t;
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119
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120
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121 void ngx_quic_run(ngx_connection_t *c, ngx_quic_conf_t *conf);
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455a8536eaa7 QUIC: limited the number of server-initiated streams.
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122 ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi);
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123 void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
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124 const char *reason);
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125 uint32_t ngx_quic_version(ngx_connection_t *c);
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126
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127
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128 /********************************* DEBUG *************************************/
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129
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130 /* #define NGX_QUIC_DEBUG_PACKETS */ /* dump packet contents */
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131 /* #define NGX_QUIC_DEBUG_FRAMES */ /* dump frames contents */
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132 /* #define NGX_QUIC_DEBUG_FRAMES_ALLOC */ /* log frames alloc/reuse/free */
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133 /* #define NGX_QUIC_DEBUG_CRYPTO */
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134
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135 #if (NGX_DEBUG)
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136
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137 #define ngx_quic_hexdump(log, fmt, data, len) \
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parents: 8570
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138 ngx_quic_hexdump_real(log, fmt, (u_char *) data, (size_t) len)
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139
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140 static ngx_inline
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141 void ngx_quic_hexdump_real(ngx_log_t *log, const char *label, u_char *data,
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142 size_t len)
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143 {
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144 ngx_int_t m;
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145 u_char buf[2048];
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146
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147 if (log->log_level & NGX_LOG_DEBUG_EVENT) {
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148 m = ngx_hex_dump(buf, data, (len > 1024) ? 1024 : len) - buf;
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149 ngx_log_debug5(NGX_LOG_DEBUG_EVENT, log, 0,
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150 "%s len:%uz data:%*s%s",
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151 label, len, m, buf, len < 2048 ? "" : "...");
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152 }
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153 }
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154
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155 #else
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156
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157 #define ngx_quic_hexdump(log, fmt, data, len)
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158
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159 #endif
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160
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parents:
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161 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */