Mercurial > hg > nginx-quic

annotate src/event/quic/ngx_event_quic.h @ 9081:52cddd44ec11 quic

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QUIC: removed check for in-flight packets in computing PTO. The check is needed for clients in order to unblock a server due to anti-amplification limits, and it seems to make no sense for servers. See RFC 9002, A.6 and A.8 for a further explanation. This makes max_ack_delay to now always account, notably including PATH_CHALLENGE timers as noted in the last paragraph of 9000, 9.4, unlike when it was only used when there are packets in flight. While here, fixed nearby style.
author Sergey Kandaurov <pluknet@nginx.com>
date Tue, 09 May 2023 19:42:38 +0400
parents 35e27117b593
children b9230e37b8a1
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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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 #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527
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16
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17 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3
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18 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25
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19 #define NGX_QUIC_DEFAULT_HOST_KEY_LEN 32
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20 #define NGX_QUIC_SR_KEY_LEN 32
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21 #define NGX_QUIC_AV_KEY_LEN 32
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22
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23 #define NGX_QUIC_SR_TOKEN_LEN 16
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24
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25 #define NGX_QUIC_MIN_INITIAL_SIZE 1200
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26
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27 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01
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28 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02
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29
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30
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31 typedef ngx_int_t (*ngx_quic_init_pt)(ngx_connection_t *c);
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32 typedef void (*ngx_quic_shutdown_pt)(ngx_connection_t *c);
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33
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34
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35 typedef enum {
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36 NGX_QUIC_STREAM_SEND_READY = 0,
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37 NGX_QUIC_STREAM_SEND_SEND,
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38 NGX_QUIC_STREAM_SEND_DATA_SENT,
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39 NGX_QUIC_STREAM_SEND_DATA_RECVD,
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40 NGX_QUIC_STREAM_SEND_RESET_SENT,
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41 NGX_QUIC_STREAM_SEND_RESET_RECVD
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42 } ngx_quic_stream_send_state_e;
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43
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44
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45 typedef enum {
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46 NGX_QUIC_STREAM_RECV_RECV = 0,
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47 NGX_QUIC_STREAM_RECV_SIZE_KNOWN,
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48 NGX_QUIC_STREAM_RECV_DATA_RECVD,
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49 NGX_QUIC_STREAM_RECV_DATA_READ,
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50 NGX_QUIC_STREAM_RECV_RESET_RECVD,
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51 NGX_QUIC_STREAM_RECV_RESET_READ
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52 } ngx_quic_stream_recv_state_e;
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53
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54
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55 typedef struct {
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56 uint64_t size;
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57 uint64_t offset;
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58 uint64_t last_offset;
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59 ngx_chain_t *chain;
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60 ngx_chain_t *last_chain;
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61 } ngx_quic_buffer_t;
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62
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63
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64 typedef struct {
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65 ngx_ssl_t *ssl;
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66
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67 ngx_flag_t retry;
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68 ngx_flag_t gso_enabled;
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69 ngx_flag_t disable_active_migration;
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70 ngx_msec_t timeout;
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71 ngx_str_t host_key;
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72 size_t mtu;
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73 size_t stream_buffer_size;
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74 ngx_uint_t max_concurrent_streams_bidi;
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75 ngx_uint_t max_concurrent_streams_uni;
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76 ngx_uint_t active_connection_id_limit;
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77 ngx_int_t stream_close_code;
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78 ngx_int_t stream_reject_code_uni;
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79 ngx_int_t stream_reject_code_bidi;
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80
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81 ngx_quic_init_pt init;
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82 ngx_quic_shutdown_pt shutdown;
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83
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84 u_char av_token_key[NGX_QUIC_AV_KEY_LEN];
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85 u_char sr_token_key[NGX_QUIC_SR_KEY_LEN];
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86 } ngx_quic_conf_t;
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87
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88
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89 struct ngx_quic_stream_s {
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90 ngx_rbtree_node_t node;
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91 ngx_queue_t queue;
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92 ngx_connection_t *parent;
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93 ngx_connection_t *connection;
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94 uint64_t id;
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95 uint64_t sent;
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96 uint64_t acked;
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97 uint64_t send_max_data;
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98 uint64_t send_offset;
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99 uint64_t send_final_size;
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100 uint64_t recv_max_data;
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101 uint64_t recv_offset;
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102 uint64_t recv_window;
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103 uint64_t recv_last;
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104 uint64_t recv_final_size;
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105 ngx_quic_buffer_t send;
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106 ngx_quic_buffer_t recv;
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107 ngx_quic_stream_send_state_e send_state;
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108 ngx_quic_stream_recv_state_e recv_state;
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109 unsigned cancelable:1;
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110 unsigned fin_acked:1;
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111 };
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112
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113
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114 void ngx_quic_recvmsg(ngx_event_t *ev);
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115 void ngx_quic_rbtree_insert_value(ngx_rbtree_node_t *temp,
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116 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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bed310672f39 QUIC: moved ssl configuration pointer to quic configuration.
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117 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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118 ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi);
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119 void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err,
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120 const char *reason);
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121 void ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err,
fc64ab301bad QUIC: connection shutdown.
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122 const char *reason);
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d710c457171c QUIC: added ability to reset a stream.
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123 ngx_int_t ngx_quic_reset_stream(ngx_connection_t *c, ngx_uint_t err);
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124 ngx_int_t ngx_quic_shutdown_stream(ngx_connection_t *c, int how);
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37d5dddabaea QUIC: reusable mode for main connection.
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125 void ngx_quic_cancelable_stream(ngx_connection_t *c);
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126 ngx_int_t ngx_quic_get_packet_dcid(ngx_log_t *log, u_char *data, size_t len,
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127 ngx_str_t *dcid);
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b4e6b7049984 QUIC: normalize header inclusion.
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128 ngx_int_t ngx_quic_derive_key(ngx_log_t *log, const char *label,
b4e6b7049984 QUIC: normalize header inclusion.
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129 ngx_str_t *secret, ngx_str_t *salt, u_char *out, size_t len);
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5d91389e0fd3 Initial QUIC support in http.
Sergey Kandaurov <pluknet@nginx.com>
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130
5d91389e0fd3 Initial QUIC support in http.
Sergey Kandaurov <pluknet@nginx.com>
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131 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */