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annotate src/event/ngx_event_quic.h @ 8438:a2c34e77cfc1 quic

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QUIC: added ALPN checks. quic-transport draft 29: section 7: * authenticated negotiation of an application protocol (TLS uses ALPN [RFC7301] for this purpose) ... Endpoints MUST explicitly negotiate an application protocol. This avoids situations where there is a disagreement about the protocol that is in use. section 8.1: When using ALPN, endpoints MUST immediately close a connection (see Section 10.3 of [QUIC-TRANSPORT]) with a no_application_protocol TLS alert (QUIC error code 0x178; see Section 4.10) if an application protocol is not negotiated. Changes in ngx_quic_close_quic() function are required to avoid attempts to generated and send packets without proper keys, what happens in case of failed ALPN check.
author Vladimir Homutov <vl@nginx.com>
date Thu, 18 Jun 2020 13:58:46 +0300
parents 9fe7875ce4bb
children e0f92f68e018
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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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15 /* Supported drafts: 27, 28 */
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16 #ifndef NGX_QUIC_DRAFT_VERSION
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17 #define NGX_QUIC_DRAFT_VERSION 27
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18 #endif
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19 #define NGX_QUIC_VERSION (0xff000000 + NGX_QUIC_DRAFT_VERSION)
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21 #define NGX_QUIC_ALPN(s) NGX_QUIC_ALPN_DRAFT(s)
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22 #define NGX_QUIC_ALPN_DRAFT(s) "h3-" #s
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23 #define NGX_QUIC_ALPN_STR NGX_QUIC_ALPN(NGX_QUIC_DRAFT_VERSION)
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24 #define NGX_QUIC_ALPN_LEN (sizeof(NGX_QUIC_ALPN_STR) - 1)
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25
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26 #define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */
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27 #define NGX_QUIC_MAX_LONG_HEADER 56
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28 /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */
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29
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30 #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527
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31 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT 1252
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32 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT6 1232
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33
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34 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3
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35 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25
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36
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37 #define NGX_QUIC_RETRY_TIMEOUT 3000
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38 #define NGX_QUIC_RETRY_LIFETIME 30000
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39 #define NGX_QUIC_RETRY_BUFFER_SIZE 128
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40 /* 1 flags + 4 version + 3 x (1 + 20) s/o/dcid + itag + token(44) */
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41 #define NGX_QUIC_MAX_TOKEN_SIZE 32
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42 /* sizeof(struct in6_addr) + sizeof(ngx_msec_t) up to AES-256 block size */
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43
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44 #define NGX_QUIC_HARDCODED_PTO 1000 /* 1s, TODO: collect */
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45 #define NGX_QUIC_CC_MIN_INTERVAL 1000 /* 1s */
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46
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47 #define NGX_QUIC_MIN_INITIAL_SIZE 1200
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48
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49 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01
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50 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02
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51
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52 #define NGX_QUIC_STREAM_BUFSIZE 65536
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53
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54
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55 typedef struct {
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56 /* configurable */
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57 ngx_msec_t max_idle_timeout;
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58 ngx_msec_t max_ack_delay;
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59
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60 size_t max_udp_payload_size;
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61 size_t initial_max_data;
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62 size_t initial_max_stream_data_bidi_local;
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63 size_t initial_max_stream_data_bidi_remote;
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64 size_t initial_max_stream_data_uni;
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65 ngx_uint_t initial_max_streams_bidi;
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66 ngx_uint_t initial_max_streams_uni;
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67 ngx_uint_t ack_delay_exponent;
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68 ngx_uint_t disable_active_migration;
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69 ngx_uint_t active_connection_id_limit;
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70 ngx_str_t original_dcid;
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71 ngx_str_t initial_scid;
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72 ngx_str_t retry_scid;
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73
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74 ngx_flag_t retry;
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75 u_char token_key[32]; /* AES 256 */
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76
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77 /* TODO */
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78 u_char stateless_reset_token[16];
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79 void *preferred_address;
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80 } ngx_quic_tp_t;
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81
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82
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83 typedef struct {
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84 uint64_t sent;
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85 uint64_t received;
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86 ngx_queue_t frames; /* reorder queue */
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87 size_t total; /* size of buffered data */
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88 } ngx_quic_frames_stream_t;
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89
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90
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91 struct ngx_quic_stream_s {
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92 ngx_rbtree_node_t node;
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93 ngx_connection_t *parent;
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94 ngx_connection_t *c;
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95 uint64_t id;
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96 uint64_t acked;
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97 uint64_t send_max_data;
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98 ngx_buf_t *b;
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99 ngx_quic_frames_stream_t fs;
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100 };
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101
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102
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103 void ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
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104 ngx_connection_handler_pt handler);
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105 ngx_connection_t *ngx_quic_create_uni_stream(ngx_connection_t *c);
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106
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107
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108 /********************************* DEBUG *************************************/
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109
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110 /* #define NGX_QUIC_DEBUG_PACKETS */ /* dump packet contents */
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111 /* #define NGX_QUIC_DEBUG_FRAMES */ /* dump frames contents */
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112 /* #define NGX_QUIC_DEBUG_FRAMES_ALLOC */ /* log frames alloc/reuse/free */
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113 /* #define NGX_QUIC_DEBUG_CRYPTO */
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114
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115 #if (NGX_DEBUG)
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116
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117 #define ngx_quic_hexdump(log, label, data, len) \
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118 do { \
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119 ngx_int_t m; \
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120 u_char buf[2048]; \
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121 \
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122 if (log->log_level & NGX_LOG_DEBUG_EVENT) { \
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123 m = ngx_hex_dump(buf, (u_char *) data, ngx_min(len, 1024)) - buf; \
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124 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, \
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125 label " len:%uz data:%*s%s", \
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126 len, m, buf, len < 2048 ? "" : "..."); \
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127 } \
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128 } while (0)
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Vladimir Homutov <vl@nginx.com>
parents: 8215
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129
69345a26ba69 Split transport and crypto parts into separate files.
Vladimir Homutov <vl@nginx.com>
parents: 8215
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130 #else
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Vladimir Homutov <vl@nginx.com>
parents: 8215
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131
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f175006124d0 Cleaned up hexdumps in debug output.
Vladimir Homutov <vl@nginx.com>
parents: 8359
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132 #define ngx_quic_hexdump(log, fmt, data, len)
8221
69345a26ba69 Split transport and crypto parts into separate files.
Vladimir Homutov <vl@nginx.com>
parents: 8215
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133
69345a26ba69 Split transport and crypto parts into separate files.
Vladimir Homutov <vl@nginx.com>
parents: 8215
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134 #endif
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Vladimir Homutov <vl@nginx.com>
parents: 8215
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135
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5d91389e0fd3 Initial QUIC support in http.
Sergey Kandaurov <pluknet@nginx.com>
parents:
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136 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */