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annotate src/event/ngx_event_quic.h @ 8623:8550b91e8e35 quic

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QUIC: added proper logging of special values. A number of unsigned variables has a special value, usually -1 or some maximum, which produces huge numeric value in logs and makes them hard to read. In order to distinguish such values in log, they are casted to the signed type and printed as literal '-1'.
author Vladimir Homutov <vl@nginx.com>
date Fri, 06 Nov 2020 18:21:31 +0300
parents 9c3be23ddbe7
children 4416b7ab0a27
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 #define NGX_QUIC_VERSION (0xff000000 + NGX_QUIC_DRAFT_VERSION)
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20
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21 #define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */
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22 #define NGX_QUIC_MAX_LONG_HEADER 56
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23 /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */
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24
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25 #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527
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26 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT 1252
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27 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT6 1232
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28
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29 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3
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30 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25
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31
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32 #define NGX_QUIC_RETRY_TIMEOUT 3000
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33 #define NGX_QUIC_RETRY_LIFETIME 30000
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34 #define NGX_QUIC_RETRY_BUFFER_SIZE 128
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35 /* 1 flags + 4 version + 3 x (1 + 20) s/o/dcid + itag + token(44) */
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36 #define NGX_QUIC_MAX_TOKEN_SIZE 32
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37 /* sizeof(struct in6_addr) + sizeof(ngx_msec_t) up to AES-256 block size */
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38
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39 /* quic-recovery, section 6.2.2, kInitialRtt */
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40 #define NGX_QUIC_INITIAL_RTT 333 /* ms */
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41
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42 /* quic-recovery, section 6.1.1, Packet Threshold */
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43 #define NGX_QUIC_PKT_THR 3 /* packets */
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44 /* quic-recovery, section 6.1.2, Time Threshold */
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45 #define NGX_QUIC_TIME_THR 1.125
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46 #define NGX_QUIC_TIME_GRANULARITY 1 /* ms */
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47
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48 #define NGX_QUIC_CC_MIN_INTERVAL 1000 /* 1s */
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49
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50 #define NGX_QUIC_MIN_INITIAL_SIZE 1200
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51
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52 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01
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53 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02
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54
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55 #define NGX_QUIC_STREAM_BUFSIZE 65536
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56
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57 #define NGX_QUIC_MAX_CID_LEN 20
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58 #define NGX_QUIC_SERVER_CID_LEN NGX_QUIC_MAX_CID_LEN
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59
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60 #define NGX_QUIC_SR_TOKEN_LEN 16
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61
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62
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63 typedef struct {
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64 /* configurable */
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65 ngx_msec_t max_idle_timeout;
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66 ngx_msec_t max_ack_delay;
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67
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68 size_t max_udp_payload_size;
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69 size_t initial_max_data;
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70 size_t initial_max_stream_data_bidi_local;
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71 size_t initial_max_stream_data_bidi_remote;
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72 size_t initial_max_stream_data_uni;
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73 ngx_uint_t initial_max_streams_bidi;
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74 ngx_uint_t initial_max_streams_uni;
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75 ngx_uint_t ack_delay_exponent;
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76 ngx_uint_t disable_active_migration;
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77 ngx_uint_t active_connection_id_limit;
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78 ngx_str_t original_dcid;
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79 ngx_str_t initial_scid;
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80 ngx_str_t retry_scid;
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81 u_char sr_token[NGX_QUIC_SR_TOKEN_LEN];
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82 ngx_uint_t sr_enabled;
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83
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84 /* TODO */
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85 void *preferred_address;
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86 } ngx_quic_tp_t;
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87
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88
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89 typedef struct {
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90 ngx_ssl_t *ssl;
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91 ngx_quic_tp_t tp;
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92 ngx_flag_t retry;
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93 ngx_flag_t require_alpn;
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94 u_char token_key[32]; /* AES 256 */
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95 ngx_str_t sr_token_key; /* stateless reset token key */
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96 } ngx_quic_conf_t;
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97
0d2b2664b41c QUIC: added "quic" listen parameter.
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98
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99 typedef struct {
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100 uint64_t sent;
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101 uint64_t received;
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102 ngx_queue_t frames; /* reorder queue */
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103 size_t total; /* size of buffered data */
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104 } ngx_quic_frames_stream_t;
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105
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106
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107 struct ngx_quic_stream_s {
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108 ngx_rbtree_node_t node;
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109 ngx_connection_t *parent;
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110 ngx_connection_t *c;
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111 uint64_t id;
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112 uint64_t acked;
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113 uint64_t send_max_data;
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114 ngx_buf_t *b;
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115 ngx_quic_frames_stream_t fs;
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116 };
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117
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118
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119 typedef struct ngx_quic_keys_s ngx_quic_keys_t;
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120
9c3be23ddbe7 QUIC: refactored key handling.
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121
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122 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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123 ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi);
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124 void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
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125 const char *reason);
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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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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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161 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */