Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_connection.h @ 8940:fb41e37ddeb0 quic
QUIC: decoupled path state and limitation status.
The path validation status and anti-amplification limit status is actually
two different variables. It is possible that validating path should not
be limited (for example, when re-validating former path).
author | Vladimir Homutov <vl@nginx.com> |
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date | Mon, 13 Dec 2021 09:48:33 +0300 |
parents | ddd5e5c0f87d |
children | fb811b6c76ee |
rev | line source |
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1 /* |
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2 * Copyright (C) Nginx, Inc. |
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3 */ |
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4 |
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5 |
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6 #ifndef _NGX_EVENT_QUIC_CONNECTION_H_INCLUDED_ |
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7 #define _NGX_EVENT_QUIC_CONNECTION_H_INCLUDED_ |
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8 |
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9 |
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10 #include <ngx_config.h> |
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11 #include <ngx_core.h> |
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12 #include <ngx_event.h> |
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14 |
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15 /* #define NGX_QUIC_DEBUG_PACKETS */ /* dump packet contents */ |
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16 /* #define NGX_QUIC_DEBUG_FRAMES */ /* dump frames contents */ |
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17 /* #define NGX_QUIC_DEBUG_ALLOC */ /* log frames and bufs alloc */ |
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18 /* #define NGX_QUIC_DEBUG_CRYPTO */ |
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19 |
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20 typedef struct ngx_quic_connection_s ngx_quic_connection_t; |
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21 typedef struct ngx_quic_server_id_s ngx_quic_server_id_t; |
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22 typedef struct ngx_quic_client_id_s ngx_quic_client_id_t; |
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23 typedef struct ngx_quic_send_ctx_s ngx_quic_send_ctx_t; |
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24 typedef struct ngx_quic_socket_s ngx_quic_socket_t; |
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25 typedef struct ngx_quic_path_s ngx_quic_path_t; |
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26 typedef struct ngx_quic_keys_s ngx_quic_keys_t; |
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27 |
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28 #include <ngx_event_quic_transport.h> |
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29 #include <ngx_event_quic_protection.h> |
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30 #include <ngx_event_quic_frames.h> |
8747 | 31 #include <ngx_event_quic_migration.h> |
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32 #include <ngx_event_quic_connid.h> |
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33 #include <ngx_event_quic_streams.h> |
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34 #include <ngx_event_quic_ssl.h> |
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35 #include <ngx_event_quic_tokens.h> |
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36 #include <ngx_event_quic_ack.h> |
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37 #include <ngx_event_quic_output.h> |
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38 #include <ngx_event_quic_socket.h> |
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39 |
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40 |
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41 /* RFC 9002, 6.2.2. Handshakes and New Paths: kInitialRtt */ |
8747 | 42 #define NGX_QUIC_INITIAL_RTT 333 /* ms */ |
43 | |
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44 #define NGX_QUIC_UNSET_PN (uint64_t) -1 |
8747 | 45 |
46 #define NGX_QUIC_SEND_CTX_LAST (NGX_QUIC_ENCRYPTION_LAST - 1) | |
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47 |
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48 /* 0-RTT and 1-RTT data exist in the same packet number space, |
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49 * so we have 3 packet number spaces: |
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50 * |
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51 * 0 - Initial |
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52 * 1 - Handshake |
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53 * 2 - 0-RTT and 1-RTT |
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54 */ |
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55 #define ngx_quic_get_send_ctx(qc, level) \ |
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56 ((level) == ssl_encryption_initial) ? &((qc)->send_ctx[0]) \ |
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57 : (((level) == ssl_encryption_handshake) ? &((qc)->send_ctx[1]) \ |
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58 : &((qc)->send_ctx[2])) |
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59 |
8747 | 60 #define ngx_quic_get_connection(c) \ |
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61 (((c)->udp) ? (((ngx_quic_socket_t *)((c)->udp))->quic) : NULL) |
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62 |
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63 #define ngx_quic_get_socket(c) ((ngx_quic_socket_t *)((c)->udp)) |
8747 | 64 |
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65 |
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66 struct ngx_quic_client_id_s { |
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67 ngx_queue_t queue; |
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68 uint64_t seqnum; |
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69 size_t len; |
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70 u_char id[NGX_QUIC_CID_LEN_MAX]; |
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71 u_char sr_token[NGX_QUIC_SR_TOKEN_LEN]; |
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72 ngx_uint_t refcnt; |
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73 }; |
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74 |
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75 |
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76 struct ngx_quic_server_id_s { |
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77 uint64_t seqnum; |
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78 size_t len; |
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79 u_char id[NGX_QUIC_CID_LEN_MAX]; |
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80 }; |
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81 |
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82 |
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83 struct ngx_quic_path_s { |
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84 ngx_queue_t queue; |
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85 struct sockaddr *sockaddr; |
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86 socklen_t socklen; |
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87 ngx_uint_t state; |
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88 ngx_uint_t limited; /* unsigned limited:1; */ |
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89 ngx_msec_t expires; |
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90 ngx_msec_t last_seen; |
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91 ngx_uint_t tries; |
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92 off_t sent; |
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93 off_t received; |
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94 u_char challenge1[8]; |
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95 u_char challenge2[8]; |
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96 ngx_uint_t refcnt; |
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97 uint64_t seqnum; |
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98 ngx_str_t addr_text; |
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99 u_char text[NGX_SOCKADDR_STRLEN]; |
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100 }; |
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101 |
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102 |
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103 struct ngx_quic_socket_s { |
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104 ngx_udp_connection_t udp; |
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105 ngx_quic_connection_t *quic; |
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106 ngx_queue_t queue; |
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107 |
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108 ngx_quic_server_id_t sid; |
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109 |
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110 ngx_quic_path_t *path; |
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111 ngx_quic_client_id_t *cid; |
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112 }; |
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113 |
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114 |
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115 typedef struct { |
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116 ngx_rbtree_t tree; |
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117 ngx_rbtree_node_t sentinel; |
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118 ngx_queue_t uninitialized; |
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119 |
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120 uint64_t sent; |
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121 uint64_t recv_offset; |
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122 uint64_t recv_window; |
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123 uint64_t recv_last; |
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124 uint64_t recv_max_data; |
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125 uint64_t send_max_data; |
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126 |
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127 uint64_t server_max_streams_uni; |
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128 uint64_t server_max_streams_bidi; |
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129 uint64_t server_streams_uni; |
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130 uint64_t server_streams_bidi; |
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131 |
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132 uint64_t client_max_streams_uni; |
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133 uint64_t client_max_streams_bidi; |
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134 uint64_t client_streams_uni; |
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135 uint64_t client_streams_bidi; |
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136 |
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137 ngx_uint_t initialized; |
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138 /* unsigned initialized:1; */ |
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139 } ngx_quic_streams_t; |
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140 |
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141 |
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142 typedef struct { |
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143 size_t in_flight; |
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144 size_t window; |
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145 size_t ssthresh; |
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146 ngx_msec_t recovery_start; |
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147 } ngx_quic_congestion_t; |
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148 |
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149 |
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150 /* |
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151 * RFC 9000, 12.3. Packet Numbers |
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152 * |
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153 * Conceptually, a packet number space is the context in which a packet |
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154 * can be processed and acknowledged. Initial packets can only be sent |
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155 * with Initial packet protection keys and acknowledged in packets that |
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156 * are also Initial packets. |
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157 */ |
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158 struct ngx_quic_send_ctx_s { |
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159 enum ssl_encryption_level_t level; |
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160 |
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161 ngx_chain_t *crypto; |
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162 uint64_t crypto_received; |
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163 uint64_t crypto_sent; |
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164 |
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165 uint64_t pnum; /* to be sent */ |
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166 uint64_t largest_ack; /* received from peer */ |
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167 uint64_t largest_pn; /* received from peer */ |
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168 |
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169 ngx_queue_t frames; /* generated frames */ |
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170 ngx_queue_t sending; /* frames assigned to pkt */ |
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171 ngx_queue_t sent; /* frames waiting ACK */ |
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172 |
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173 uint64_t pending_ack; /* non sent ack-eliciting */ |
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174 uint64_t largest_range; |
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175 uint64_t first_range; |
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176 ngx_msec_t largest_received; |
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177 ngx_msec_t ack_delay_start; |
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178 ngx_uint_t nranges; |
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179 ngx_quic_ack_range_t ranges[NGX_QUIC_MAX_RANGES]; |
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180 ngx_uint_t send_ack; |
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181 }; |
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182 |
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183 |
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184 struct ngx_quic_connection_s { |
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185 uint32_t version; |
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186 |
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187 ngx_quic_socket_t *socket; |
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188 ngx_quic_socket_t *backup; |
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189 |
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190 ngx_queue_t sockets; |
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191 ngx_queue_t paths; |
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192 ngx_queue_t client_ids; |
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193 ngx_queue_t free_sockets; |
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194 ngx_queue_t free_paths; |
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195 ngx_queue_t free_client_ids; |
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196 |
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197 ngx_uint_t nsockets; |
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198 ngx_uint_t nclient_ids; |
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199 uint64_t max_retired_seqnum; |
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200 uint64_t client_seqnum; |
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201 uint64_t server_seqnum; |
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202 uint64_t path_seqnum; |
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203 |
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204 ngx_quic_tp_t tp; |
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205 ngx_quic_tp_t ctp; |
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206 |
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207 ngx_quic_send_ctx_t send_ctx[NGX_QUIC_SEND_CTX_LAST]; |
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208 |
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209 ngx_quic_keys_t *keys; |
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210 |
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211 ngx_quic_conf_t *conf; |
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212 |
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213 ngx_event_t push; |
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214 ngx_event_t pto; |
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215 ngx_event_t close; |
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216 ngx_event_t path_validation; |
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217 ngx_msec_t last_cc; |
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218 |
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219 ngx_msec_t first_rtt; |
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220 ngx_msec_t latest_rtt; |
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221 ngx_msec_t avg_rtt; |
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222 ngx_msec_t min_rtt; |
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223 ngx_msec_t rttvar; |
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224 |
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225 ngx_uint_t pto_count; |
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226 |
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227 ngx_queue_t free_frames; |
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228 ngx_chain_t *free_bufs; |
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229 ngx_buf_t *free_shadow_bufs; |
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230 |
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231 ngx_uint_t nframes; |
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232 #ifdef NGX_QUIC_DEBUG_ALLOC |
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233 ngx_uint_t nbufs; |
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234 #endif |
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235 |
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236 ngx_quic_streams_t streams; |
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237 ngx_quic_congestion_t congestion; |
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238 |
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239 off_t received; |
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240 |
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241 ngx_uint_t error; |
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242 enum ssl_encryption_level_t error_level; |
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243 ngx_uint_t error_ftype; |
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244 const char *error_reason; |
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245 |
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246 ngx_uint_t shutdown_code; |
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247 const char *shutdown_reason; |
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248 |
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249 unsigned error_app:1; |
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250 unsigned send_timer_set:1; |
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251 unsigned closing:1; |
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252 unsigned shutdown:1; |
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253 unsigned draining:1; |
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254 unsigned key_phase:1; |
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255 unsigned validated:1; |
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256 unsigned client_tp_done:1; |
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257 }; |
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258 |
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259 |
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260 ngx_int_t ngx_quic_apply_transport_params(ngx_connection_t *c, |
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261 ngx_quic_tp_t *ctp); |
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262 void ngx_quic_discard_ctx(ngx_connection_t *c, |
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263 enum ssl_encryption_level_t level); |
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264 void ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc); |
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265 void ngx_quic_shutdown_quic(ngx_connection_t *c); |
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266 |
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267 #if (NGX_DEBUG) |
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268 void ngx_quic_connstate_dbg(ngx_connection_t *c); |
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269 #else |
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270 #define ngx_quic_connstate_dbg(c) |
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271 #endif |
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272 |
8747 | 273 #endif /* _NGX_EVENT_QUIC_CONNECTION_H_INCLUDED_ */ |