Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_connection.h @ 9162:f9845e4b5c14
QUIC: simplified setting close timer when closing connection.
Previously, the timer was never reset due to an explicit check. The check was
added in 36b59521a41c as part of connection close simplification. The reason
was to retain the earliest timeout. However, the timeouts are all the same
while QUIC handshake is in progress and resetting the timer for the same value
has no performance implications. After handshake completion there's only
application level. The change removes the check.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Thu, 14 Sep 2023 14:15:20 +0400 |
parents | 2880f60a80c3 |
children | fcec773dd249 |
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 #if (NGX_QUIC_OPENSSL_COMPAT) |
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29 #include <ngx_event_quic_openssl_compat.h> |
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30 #endif |
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31 #include <ngx_event_quic_transport.h> |
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32 #include <ngx_event_quic_protection.h> |
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33 #include <ngx_event_quic_frames.h> |
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35 #include <ngx_event_quic_connid.h> |
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36 #include <ngx_event_quic_streams.h> |
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37 #include <ngx_event_quic_ssl.h> |
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38 #include <ngx_event_quic_tokens.h> |
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39 #include <ngx_event_quic_ack.h> |
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40 #include <ngx_event_quic_output.h> |
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41 #include <ngx_event_quic_socket.h> |
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42 |
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43 |
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44 /* RFC 9002, 6.2.2. Handshakes and New Paths: kInitialRtt */ |
8747 | 45 #define NGX_QUIC_INITIAL_RTT 333 /* ms */ |
46 | |
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47 #define NGX_QUIC_UNSET_PN (uint64_t) -1 |
8747 | 48 |
49 #define NGX_QUIC_SEND_CTX_LAST (NGX_QUIC_ENCRYPTION_LAST - 1) | |
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50 |
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51 /* 0-RTT and 1-RTT data exist in the same packet number space, |
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52 * so we have 3 packet number spaces: |
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53 * |
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54 * 0 - Initial |
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55 * 1 - Handshake |
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56 * 2 - 0-RTT and 1-RTT |
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57 */ |
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58 #define ngx_quic_get_send_ctx(qc, level) \ |
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59 ((level) == ssl_encryption_initial) ? &((qc)->send_ctx[0]) \ |
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60 : (((level) == ssl_encryption_handshake) ? &((qc)->send_ctx[1]) \ |
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61 : &((qc)->send_ctx[2])) |
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62 |
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64 (((c)->udp) ? (((ngx_quic_socket_t *)((c)->udp))->quic) : NULL) |
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65 |
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66 #define ngx_quic_get_socket(c) ((ngx_quic_socket_t *)((c)->udp)) |
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68 |
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69 typedef enum { |
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70 NGX_QUIC_PATH_IDLE = 0, |
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71 NGX_QUIC_PATH_VALIDATING, |
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72 NGX_QUIC_PATH_WAITING, |
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73 NGX_QUIC_PATH_MTUD |
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74 } ngx_quic_path_state_e; |
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75 |
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76 |
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77 struct ngx_quic_client_id_s { |
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78 ngx_queue_t queue; |
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79 uint64_t seqnum; |
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80 size_t len; |
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81 u_char id[NGX_QUIC_CID_LEN_MAX]; |
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82 u_char sr_token[NGX_QUIC_SR_TOKEN_LEN]; |
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83 ngx_uint_t used; /* unsigned used:1; */ |
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84 }; |
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85 |
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86 |
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87 struct ngx_quic_server_id_s { |
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88 uint64_t seqnum; |
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89 size_t len; |
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90 u_char id[NGX_QUIC_CID_LEN_MAX]; |
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91 }; |
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92 |
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93 |
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94 struct ngx_quic_path_s { |
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95 ngx_queue_t queue; |
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96 struct sockaddr *sockaddr; |
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97 ngx_sockaddr_t sa; |
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98 socklen_t socklen; |
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99 ngx_quic_client_id_t *cid; |
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100 ngx_quic_path_state_e state; |
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101 ngx_msec_t expires; |
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102 ngx_uint_t tries; |
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103 ngx_uint_t tag; |
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104 size_t mtu; |
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105 size_t mtud; |
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106 size_t max_mtu; |
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107 off_t sent; |
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108 off_t received; |
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109 u_char challenge1[8]; |
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110 u_char challenge2[8]; |
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111 uint64_t seqnum; |
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112 uint64_t mtu_pnum[NGX_QUIC_PATH_RETRIES]; |
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113 ngx_str_t addr_text; |
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114 u_char text[NGX_SOCKADDR_STRLEN]; |
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115 ngx_uint_t validated; /* unsigned validated:1; */ |
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116 }; |
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117 |
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118 |
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119 struct ngx_quic_socket_s { |
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120 ngx_udp_connection_t udp; |
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121 ngx_quic_connection_t *quic; |
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122 ngx_queue_t queue; |
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123 ngx_quic_server_id_t sid; |
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124 ngx_sockaddr_t sockaddr; |
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125 socklen_t socklen; |
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126 ngx_uint_t used; /* unsigned used:1; */ |
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127 }; |
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128 |
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129 |
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130 typedef struct { |
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131 ngx_rbtree_t tree; |
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132 ngx_rbtree_node_t sentinel; |
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134 ngx_queue_t uninitialized; |
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136 |
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137 uint64_t sent; |
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138 uint64_t recv_offset; |
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139 uint64_t recv_window; |
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140 uint64_t recv_last; |
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141 uint64_t recv_max_data; |
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143 uint64_t send_max_data; |
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144 |
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145 uint64_t server_max_streams_uni; |
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146 uint64_t server_max_streams_bidi; |
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147 uint64_t server_streams_uni; |
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148 uint64_t server_streams_bidi; |
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149 |
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150 uint64_t client_max_streams_uni; |
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151 uint64_t client_max_streams_bidi; |
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152 uint64_t client_streams_uni; |
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153 uint64_t client_streams_bidi; |
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154 |
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155 ngx_uint_t initialized; |
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156 /* unsigned initialized:1; */ |
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157 } ngx_quic_streams_t; |
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158 |
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159 |
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160 typedef struct { |
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161 size_t in_flight; |
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162 size_t window; |
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163 size_t ssthresh; |
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164 ngx_msec_t recovery_start; |
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165 } ngx_quic_congestion_t; |
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166 |
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167 |
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168 /* |
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169 * RFC 9000, 12.3. Packet Numbers |
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170 * |
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171 * Conceptually, a packet number space is the context in which a packet |
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172 * can be processed and acknowledged. Initial packets can only be sent |
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173 * with Initial packet protection keys and acknowledged in packets that |
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174 * are also Initial packets. |
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175 */ |
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176 struct ngx_quic_send_ctx_s { |
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177 enum ssl_encryption_level_t level; |
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178 |
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179 ngx_quic_buffer_t crypto; |
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180 uint64_t crypto_sent; |
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181 |
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182 uint64_t pnum; /* to be sent */ |
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183 uint64_t largest_ack; /* received from peer */ |
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184 uint64_t largest_pn; /* received from peer */ |
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185 |
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186 ngx_queue_t frames; /* generated frames */ |
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187 ngx_queue_t sending; /* frames assigned to pkt */ |
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188 ngx_queue_t sent; /* frames waiting ACK */ |
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189 |
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190 uint64_t pending_ack; /* non sent ack-eliciting */ |
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191 uint64_t largest_range; |
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192 uint64_t first_range; |
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193 ngx_msec_t largest_received; |
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194 ngx_msec_t ack_delay_start; |
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195 ngx_uint_t nranges; |
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196 ngx_quic_ack_range_t ranges[NGX_QUIC_MAX_RANGES]; |
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197 ngx_uint_t send_ack; |
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198 }; |
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199 |
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200 |
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201 struct ngx_quic_connection_s { |
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202 uint32_t version; |
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203 |
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204 ngx_quic_path_t *path; |
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205 |
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206 ngx_queue_t sockets; |
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207 ngx_queue_t paths; |
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208 ngx_queue_t client_ids; |
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209 ngx_queue_t free_sockets; |
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210 ngx_queue_t free_paths; |
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211 ngx_queue_t free_client_ids; |
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212 |
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213 ngx_uint_t nsockets; |
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214 ngx_uint_t nclient_ids; |
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215 uint64_t max_retired_seqnum; |
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216 uint64_t client_seqnum; |
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217 uint64_t server_seqnum; |
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218 uint64_t path_seqnum; |
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219 |
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220 ngx_quic_tp_t tp; |
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221 ngx_quic_tp_t ctp; |
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222 |
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223 ngx_quic_send_ctx_t send_ctx[NGX_QUIC_SEND_CTX_LAST]; |
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224 |
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225 ngx_quic_keys_t *keys; |
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226 |
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227 ngx_quic_conf_t *conf; |
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228 |
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229 ngx_event_t push; |
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230 ngx_event_t pto; |
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231 ngx_event_t close; |
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232 ngx_event_t path_validation; |
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233 ngx_event_t key_update; |
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234 |
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235 ngx_msec_t last_cc; |
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236 |
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237 ngx_msec_t first_rtt; |
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238 ngx_msec_t latest_rtt; |
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239 ngx_msec_t avg_rtt; |
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240 ngx_msec_t min_rtt; |
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241 ngx_msec_t rttvar; |
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242 |
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243 ngx_uint_t pto_count; |
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244 |
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245 ngx_queue_t free_frames; |
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246 ngx_buf_t *free_bufs; |
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247 ngx_buf_t *free_shadow_bufs; |
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248 |
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249 ngx_uint_t nframes; |
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250 #ifdef NGX_QUIC_DEBUG_ALLOC |
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251 ngx_uint_t nbufs; |
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252 ngx_uint_t nshadowbufs; |
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253 #endif |
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254 |
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255 #if (NGX_QUIC_OPENSSL_COMPAT) |
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256 ngx_quic_compat_t *compat; |
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257 #endif |
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258 |
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259 ngx_quic_streams_t streams; |
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260 ngx_quic_congestion_t congestion; |
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261 |
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262 off_t received; |
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263 |
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264 ngx_uint_t error; |
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265 enum ssl_encryption_level_t error_level; |
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266 ngx_uint_t error_ftype; |
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267 const char *error_reason; |
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268 |
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269 ngx_uint_t shutdown_code; |
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270 const char *shutdown_reason; |
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271 |
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272 unsigned error_app:1; |
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273 unsigned send_timer_set:1; |
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274 unsigned closing:1; |
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275 unsigned shutdown:1; |
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276 unsigned draining:1; |
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277 unsigned key_phase:1; |
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278 unsigned validated:1; |
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279 unsigned client_tp_done:1; |
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280 }; |
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281 |
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282 |
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283 ngx_int_t ngx_quic_apply_transport_params(ngx_connection_t *c, |
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284 ngx_quic_tp_t *ctp); |
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285 void ngx_quic_discard_ctx(ngx_connection_t *c, |
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286 enum ssl_encryption_level_t level); |
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287 void ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc); |
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288 void ngx_quic_shutdown_quic(ngx_connection_t *c); |
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289 |
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290 #if (NGX_DEBUG) |
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291 void ngx_quic_connstate_dbg(ngx_connection_t *c); |
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292 #else |
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293 #define ngx_quic_connstate_dbg(c) |
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294 #endif |
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295 |
8747 | 296 #endif /* _NGX_EVENT_QUIC_CONNECTION_H_INCLUDED_ */ |