Mercurial > hg > nginx
annotate src/event/quic/ngx_event_quic_connection.h @ 9010:a5aebd51e4c7 quic
QUIC: stream lingering.
Now ngx_quic_stream_t is decoupled from ngx_connection_t in a way that it
can persist after connection is closed by application. During this period,
server is expecting stream final size from client for correct flow control.
Also, buffered output is sent to client as more flow control credit is granted.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Sat, 05 Feb 2022 12:54:54 +0300 |
parents | 1e2f4e9c8195 |
children | f9c788f3f5cc |
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 used; /* unsigned used:1; */ |
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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 ngx_sockaddr_t sa; |
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87 socklen_t socklen; |
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88 ngx_quic_client_id_t *cid; |
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89 ngx_msec_t expires; |
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90 ngx_uint_t tries; |
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91 ngx_uint_t tag; |
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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 uint64_t seqnum; |
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97 ngx_str_t addr_text; |
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98 u_char text[NGX_SOCKADDR_STRLEN]; |
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99 unsigned validated:1; |
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100 unsigned validating:1; |
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101 unsigned limited:1; |
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102 }; |
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103 |
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104 |
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105 struct ngx_quic_socket_s { |
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106 ngx_udp_connection_t udp; |
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107 ngx_quic_connection_t *quic; |
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108 ngx_queue_t queue; |
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109 ngx_quic_server_id_t sid; |
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110 ngx_uint_t used; /* unsigned used:1; */ |
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111 }; |
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112 |
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113 |
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114 typedef struct { |
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115 ngx_rbtree_t tree; |
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116 ngx_rbtree_node_t sentinel; |
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118 ngx_queue_t uninitialized; |
9010 | 119 ngx_queue_t free; |
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120 |
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121 uint64_t sent; |
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122 uint64_t recv_offset; |
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123 uint64_t recv_window; |
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124 uint64_t recv_last; |
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125 uint64_t recv_max_data; |
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127 uint64_t send_max_data; |
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128 |
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129 uint64_t server_max_streams_uni; |
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130 uint64_t server_max_streams_bidi; |
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131 uint64_t server_streams_uni; |
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132 uint64_t server_streams_bidi; |
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133 |
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134 uint64_t client_max_streams_uni; |
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135 uint64_t client_max_streams_bidi; |
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136 uint64_t client_streams_uni; |
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137 uint64_t client_streams_bidi; |
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138 |
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139 ngx_uint_t initialized; |
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140 /* unsigned initialized:1; */ |
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141 } ngx_quic_streams_t; |
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142 |
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143 |
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144 typedef struct { |
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145 size_t in_flight; |
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146 size_t window; |
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147 size_t ssthresh; |
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148 ngx_msec_t recovery_start; |
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149 } ngx_quic_congestion_t; |
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150 |
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151 |
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152 /* |
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153 * RFC 9000, 12.3. Packet Numbers |
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154 * |
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155 * Conceptually, a packet number space is the context in which a packet |
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156 * can be processed and acknowledged. Initial packets can only be sent |
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157 * with Initial packet protection keys and acknowledged in packets that |
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158 * are also Initial packets. |
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159 */ |
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160 struct ngx_quic_send_ctx_s { |
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161 enum ssl_encryption_level_t level; |
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162 |
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163 ngx_chain_t *crypto; |
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164 uint64_t crypto_received; |
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165 uint64_t crypto_sent; |
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166 |
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167 uint64_t pnum; /* to be sent */ |
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168 uint64_t largest_ack; /* received from peer */ |
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169 uint64_t largest_pn; /* received from peer */ |
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170 |
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171 ngx_queue_t frames; /* generated frames */ |
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172 ngx_queue_t sending; /* frames assigned to pkt */ |
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173 ngx_queue_t sent; /* frames waiting ACK */ |
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174 |
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175 uint64_t pending_ack; /* non sent ack-eliciting */ |
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176 uint64_t largest_range; |
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177 uint64_t first_range; |
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178 ngx_msec_t largest_received; |
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179 ngx_msec_t ack_delay_start; |
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180 ngx_uint_t nranges; |
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181 ngx_quic_ack_range_t ranges[NGX_QUIC_MAX_RANGES]; |
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182 ngx_uint_t send_ack; |
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183 }; |
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184 |
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185 |
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186 struct ngx_quic_connection_s { |
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187 uint32_t version; |
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188 |
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189 ngx_quic_path_t *path; |
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190 |
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191 ngx_queue_t sockets; |
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192 ngx_queue_t paths; |
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193 ngx_queue_t client_ids; |
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194 ngx_queue_t free_sockets; |
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195 ngx_queue_t free_paths; |
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196 ngx_queue_t free_client_ids; |
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197 |
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198 ngx_uint_t nsockets; |
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199 ngx_uint_t nclient_ids; |
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200 uint64_t max_retired_seqnum; |
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201 uint64_t client_seqnum; |
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202 uint64_t server_seqnum; |
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203 uint64_t path_seqnum; |
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204 |
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205 ngx_quic_tp_t tp; |
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206 ngx_quic_tp_t ctp; |
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207 |
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208 ngx_quic_send_ctx_t send_ctx[NGX_QUIC_SEND_CTX_LAST]; |
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209 |
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210 ngx_quic_keys_t *keys; |
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211 |
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212 ngx_quic_conf_t *conf; |
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213 |
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214 ngx_event_t push; |
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215 ngx_event_t pto; |
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216 ngx_event_t close; |
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217 ngx_event_t path_validation; |
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218 ngx_msec_t last_cc; |
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219 |
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220 ngx_msec_t first_rtt; |
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221 ngx_msec_t latest_rtt; |
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222 ngx_msec_t avg_rtt; |
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223 ngx_msec_t min_rtt; |
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224 ngx_msec_t rttvar; |
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225 |
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226 ngx_uint_t pto_count; |
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227 |
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228 ngx_queue_t free_frames; |
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229 ngx_buf_t *free_bufs; |
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230 ngx_buf_t *free_shadow_bufs; |
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231 |
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232 ngx_uint_t nframes; |
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233 #ifdef NGX_QUIC_DEBUG_ALLOC |
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234 ngx_uint_t nbufs; |
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235 ngx_uint_t nshadowbufs; |
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236 #endif |
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237 |
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238 ngx_quic_streams_t streams; |
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239 ngx_quic_congestion_t congestion; |
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240 |
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241 off_t received; |
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242 |
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243 ngx_uint_t error; |
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244 enum ssl_encryption_level_t error_level; |
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245 ngx_uint_t error_ftype; |
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246 const char *error_reason; |
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247 |
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248 ngx_uint_t shutdown_code; |
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249 const char *shutdown_reason; |
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250 |
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251 unsigned error_app:1; |
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252 unsigned send_timer_set:1; |
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253 unsigned closing:1; |
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254 unsigned shutdown:1; |
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255 unsigned draining:1; |
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256 unsigned key_phase:1; |
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257 unsigned validated:1; |
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258 unsigned client_tp_done:1; |
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259 }; |
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260 |
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261 |
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262 ngx_int_t ngx_quic_apply_transport_params(ngx_connection_t *c, |
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263 ngx_quic_tp_t *ctp); |
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264 void ngx_quic_discard_ctx(ngx_connection_t *c, |
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265 enum ssl_encryption_level_t level); |
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266 void ngx_quic_close_connection(ngx_connection_t *c, ngx_int_t rc); |
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267 void ngx_quic_shutdown_quic(ngx_connection_t *c); |
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268 |
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269 #if (NGX_DEBUG) |
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270 void ngx_quic_connstate_dbg(ngx_connection_t *c); |
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271 #else |
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272 #define ngx_quic_connstate_dbg(c) |
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273 #endif |
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274 |
8747 | 275 #endif /* _NGX_EVENT_QUIC_CONNECTION_H_INCLUDED_ */ |