Mercurial > hg > nginx-quic

annotate src/event/ngx_event_quic_transport.h @ 7792:1cdd53532309 quic

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ACK ranges processing. + since number of ranges in unknown, provide a function to parse them once again in handler to avoid memory allocation + ack handler now processes all ranges, not only the first + ECN counters are parsed and saved into frame if present
author Vladimir Homutov <vl@nginx.com>
date Mon, 06 Apr 2020 16:19:26 +0300
parents 29354c6fc5f2
children 167d32476737
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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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6
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7 #ifndef _NGX_EVENT_QUIC_WIRE_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_WIRE_H_INCLUDED_
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9
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11 #include <ngx_event_openssl.h>
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12
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13
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14 #define ngx_quic_long_pkt(flags) ((flags) & 0x80) /* 17.2 */
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15 #define ngx_quic_short_pkt(flags) (((flags) & 0x80) == 0) /* 17.3 */
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17 /* Long packet types */
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18 #define NGX_QUIC_PKT_INITIAL 0xC0 /* 17.2.2 */
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19 #define NGX_QUIC_PKT_ZRTT 0xD0 /* 17.2.3 */
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20 #define NGX_QUIC_PKT_HANDSHAKE 0xE0 /* 17.2.4 */
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21 #define NGX_QUIC_PKT_RETRY 0xF0 /* 17.2.5 */
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22 #define NGX_QUIC_PKT_KPHASE 0x04 /* 17.3 */
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23
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24 #define ngx_quic_pkt_in(flags) (((flags) & 0xF0) == NGX_QUIC_PKT_INITIAL)
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25 #define ngx_quic_pkt_zrtt(flags) (((flags) & 0xF0) == NGX_QUIC_PKT_ZRTT)
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26 #define ngx_quic_pkt_hs(flags) (((flags) & 0xF0) == NGX_QUIC_PKT_HANDSHAKE)
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27 #define ngx_quic_pkt_retry(flags) (((flags) & 0xF0) == NGX_QUIC_PKT_RETRY)
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28
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29 /* 12.4. Frames and Frame Types */
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30 #define NGX_QUIC_FT_PADDING 0x00
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31 #define NGX_QUIC_FT_PING 0x01
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32 #define NGX_QUIC_FT_ACK 0x02
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33 #define NGX_QUIC_FT_ACK_ECN 0x03
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34 #define NGX_QUIC_FT_RESET_STREAM 0x04
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35 #define NGX_QUIC_FT_STOP_SENDING 0x05
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36 #define NGX_QUIC_FT_CRYPTO 0x06
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37 #define NGX_QUIC_FT_NEW_TOKEN 0x07
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38 #define NGX_QUIC_FT_STREAM0 0x08
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39 #define NGX_QUIC_FT_STREAM1 0x09
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40 #define NGX_QUIC_FT_STREAM2 0x0A
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41 #define NGX_QUIC_FT_STREAM3 0x0B
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42 #define NGX_QUIC_FT_STREAM4 0x0C
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43 #define NGX_QUIC_FT_STREAM5 0x0D
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44 #define NGX_QUIC_FT_STREAM6 0x0E
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45 #define NGX_QUIC_FT_STREAM7 0x0F
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46 #define NGX_QUIC_FT_MAX_DATA 0x10
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47 #define NGX_QUIC_FT_MAX_STREAM_DATA 0x11
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48 #define NGX_QUIC_FT_MAX_STREAMS 0x12
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49 #define NGX_QUIC_FT_MAX_STREAMS2 0x13
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50 #define NGX_QUIC_FT_DATA_BLOCKED 0x14
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51 #define NGX_QUIC_FT_STREAM_DATA_BLOCKED 0x15
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52 #define NGX_QUIC_FT_STREAMS_BLOCKED 0x16
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53 #define NGX_QUIC_FT_STREAMS_BLOCKED2 0x17
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54 #define NGX_QUIC_FT_NEW_CONNECTION_ID 0x18
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55 #define NGX_QUIC_FT_RETIRE_CONNECTION_ID 0x19
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56 #define NGX_QUIC_FT_PATH_CHALLENGE 0x1A
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57 #define NGX_QUIC_FT_PATH_RESPONSE 0x1B
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58 #define NGX_QUIC_FT_CONNECTION_CLOSE 0x1C
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59 #define NGX_QUIC_FT_CONNECTION_CLOSE2 0x1D
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60 #define NGX_QUIC_FT_HANDSHAKE_DONE 0x1E
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61
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62 /* 22.4. QUIC Transport Error Codes Registry */
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63 #define NGX_QUIC_ERR_NO_ERROR 0x00
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64 #define NGX_QUIC_ERR_INTERNAL_ERROR 0x01
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65 #define NGX_QUIC_ERR_SERVER_BUSY 0x02
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66 #define NGX_QUIC_ERR_FLOW_CONTROL_ERROR 0x03
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67 #define NGX_QUIC_ERR_STREAM_LIMIT_ERROR 0x04
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68 #define NGX_QUIC_ERR_STREAM_STATE_ERROR 0x05
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69 #define NGX_QUIC_ERR_FINAL_SIZE_ERROR 0x06
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70 #define NGX_QUIC_ERR_FRAME_ENCODING_ERROR 0x07
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71 #define NGX_QUIC_ERR_TRANSPORT_PARAMETER_ERROR 0x08
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72 #define NGX_QUIC_ERR_CONNECTION_ID_LIMIT_ERROR 0x09
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73 #define NGX_QUIC_ERR_PROTOCOL_VIOLATION 0x0A
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74 #define NGX_QUIC_ERR_INVALID_TOKEN 0x0B
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75 /* 0xC is not defined */
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76 #define NGX_QUIC_ERR_CRYPTO_BUFFER_EXCEEDED 0x0D
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77 /* 0xE is not defined */
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78 #define NGX_QUIC_ERR_CRYPTO_ERROR 0x10
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79
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80 #define NGX_QUIC_ERR_LAST NGX_QUIC_ERR_CRYPTO_ERROR
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81
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82 /* Transport parameters */
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83 #define NGX_QUIC_TP_ORIGINAL_CONNECTION_ID 0x00
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84 #define NGX_QUIC_TP_MAX_IDLE_TIMEOUT 0x01
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85 #define NGX_QUIC_TP_STATELESS_RESET_TOKEN 0x02
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86 #define NGX_QUIC_TP_MAX_PACKET_SIZE 0x03
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87 #define NGX_QUIC_TP_INITIAL_MAX_DATA 0x04
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88 #define NGX_QUIC_TP_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL 0x05
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89 #define NGX_QUIC_TP_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE 0x06
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90 #define NGX_QUIC_TP_INITIAL_MAX_STREAM_DATA_UNI 0x07
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91 #define NGX_QUIC_TP_INITIAL_MAX_STREAMS_BIDI 0x08
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92 #define NGX_QUIC_TP_INITIAL_MAX_STREAMS_UNI 0x09
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93 #define NGX_QUIC_TP_ACK_DELAY_EXPONENT 0x0A
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94 #define NGX_QUIC_TP_MAX_ACK_DELAY 0x0B
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95 #define NGX_QUIC_TP_DISABLE_ACTIVE_MIGRATION 0x0C
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96 #define NGX_QUIC_TP_PREFERRED_ADDRESS 0x0D
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97 #define NGX_QUIC_TP_ACTIVE_CONNECTION_ID_LIMIT 0x0E
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98
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99
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100 typedef struct {
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101 uint64_t largest;
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102 uint64_t delay;
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103 uint64_t range_count;
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104 uint64_t first_range;
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105 uint64_t ect0;
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106 uint64_t ect1;
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107 uint64_t ce;
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108 u_char *ranges_start;
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109 u_char *ranges_end;
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110 } ngx_quic_ack_frame_t;
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111
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112
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113 typedef struct {
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114 uint64_t offset;
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115 uint64_t len;
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116 u_char *data;
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117 } ngx_quic_crypto_frame_t;
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118
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119
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120 typedef struct {
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121 uint64_t seqnum;
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122 uint64_t retire;
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123 uint8_t len;
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124 u_char cid[20];
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125 u_char srt[16];
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126 } ngx_quic_new_conn_id_frame_t;
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127
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129 typedef struct {
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130 uint8_t type;
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131 uint64_t stream_id;
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132 uint64_t offset;
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133 uint64_t length;
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134 unsigned off:1;
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135 unsigned len:1;
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136 unsigned fin:1;
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137 u_char *data;
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138 } ngx_quic_stream_frame_t;
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139
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140
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141 typedef struct {
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142 uint64_t max_data;
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143 } ngx_quic_max_data_frame_t;
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144
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145
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diff changeset
146 typedef struct {
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147 uint64_t error_code;
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148 uint64_t frame_type;
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149 ngx_str_t reason;
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150 } ngx_quic_close_frame_t;
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151
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152
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153 typedef struct {
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154 uint64_t id;
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155 uint64_t error_code;
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156 uint64_t final_size;
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157 } ngx_quic_reset_stream_frame_t;
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158
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159
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160 typedef struct {
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161 uint64_t id;
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diff changeset
162 uint64_t error_code;
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163 } ngx_quic_stop_sending_frame_t;
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164
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165
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166 typedef struct {
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167 uint64_t limit;
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168 ngx_uint_t bidi; /* unsigned: bidi:1 */
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169 } ngx_quic_streams_blocked_frame_t;
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170
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171
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172 typedef struct {
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173 uint64_t limit;
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174 ngx_uint_t bidi; /* unsigned: bidi:1 */
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175 } ngx_quic_max_streams_frame_t;
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176
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177
7723
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178 typedef struct {
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179 uint64_t id;
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180 uint64_t limit;
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181 } ngx_quic_max_stream_data_frame_t;
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182
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183
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184 typedef struct {
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185 uint64_t limit;
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186 } ngx_quic_data_blocked_frame_t;
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187
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188
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189 typedef struct {
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diff changeset
190 uint64_t id;
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diff changeset
191 uint64_t limit;
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192 } ngx_quic_stream_data_blocked_frame_t;
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193
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194
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195 typedef struct {
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196 uint64_t sequence_number;
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197 } ngx_quic_retire_cid_frame_t;
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198
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199
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200 typedef struct {
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diff changeset
201 u_char data[8];
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202 } ngx_quic_path_challenge_frame_t;
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203
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204
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205 typedef struct ngx_quic_frame_s ngx_quic_frame_t;
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diff changeset
206
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parents:
diff changeset
207 struct ngx_quic_frame_s {
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diff changeset
208 ngx_uint_t type;
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diff changeset
209 enum ssl_encryption_level_t level;
7774
e10b4c61420f Implemented retransmission and retransmit queue.
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diff changeset
210 ngx_queue_t queue;
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diff changeset
211 uint64_t pnum;
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Vladimir Homutov <vl@nginx.com>
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diff changeset
212 ngx_msec_t first;
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diff changeset
213 ngx_msec_t last;
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diff changeset
214 ngx_uint_t need_ack;
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diff changeset
215 /* unsigned need_ack:1; */
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Vladimir Homutov <vl@nginx.com>
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diff changeset
216
7752
c7185bc5b4d9 QUIC frames reuse.
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diff changeset
217 u_char *data;
7690
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diff changeset
218 union {
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diff changeset
219 ngx_quic_ack_frame_t ack;
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diff changeset
220 ngx_quic_crypto_frame_t crypto;
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diff changeset
221 ngx_quic_new_conn_id_frame_t ncid;
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parents:
diff changeset
222 ngx_quic_stream_frame_t stream;
7703
ff540f13d95d MAX_DATA frame parser/handler.
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diff changeset
223 ngx_quic_max_data_frame_t max_data;
7690
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
224 ngx_quic_close_frame_t close;
7697
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diff changeset
225 ngx_quic_reset_stream_frame_t reset_stream;
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diff changeset
226 ngx_quic_stop_sending_frame_t stop_sending;
7702
d3b26c3bea22 Added parsing of STREAMS BLOCKED frames.
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diff changeset
227 ngx_quic_streams_blocked_frame_t streams_blocked;
7711
a14afe21e692 Double MAX_STREAMS on STREAMS_BLOCKED.
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diff changeset
228 ngx_quic_max_streams_frame_t max_streams;
7723
085fd6e68367 Implemented parsing of remaining frame types.
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diff changeset
229 ngx_quic_max_stream_data_frame_t max_stream_data;
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diff changeset
230 ngx_quic_data_blocked_frame_t data_blocked;
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diff changeset
231 ngx_quic_stream_data_blocked_frame_t stream_data_blocked;
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diff changeset
232 ngx_quic_retire_cid_frame_t retire_cid;
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diff changeset
233 ngx_quic_path_challenge_frame_t path_challenge;
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diff changeset
234 ngx_quic_path_challenge_frame_t path_response;
7690
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parents:
diff changeset
235 } u;
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parents:
diff changeset
236 u_char info[128]; // for debug
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parents:
diff changeset
237 };
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parents:
diff changeset
238
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diff changeset
239
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parents:
diff changeset
240 typedef struct {
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parents:
diff changeset
241 ngx_log_t *log;
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diff changeset
242
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parents:
diff changeset
243 struct ngx_quic_secret_s *secret;
7785
29354c6fc5f2 TLS Key Update in QUIC.
Sergey Kandaurov <pluknet@nginx.com>
parents: 7781
diff changeset
244 struct ngx_quic_secret_s *next;
7773
dc7ac778aafe Introduced packet namespace in QUIC connection.
Vladimir Homutov <vl@nginx.com>
parents: 7764
diff changeset
245 uint64_t number;
7781
fdda518d10ba Proper handling of packet number in header.
Vladimir Homutov <vl@nginx.com>
parents: 7774
diff changeset
246 uint8_t num_len;
fdda518d10ba Proper handling of packet number in header.
Vladimir Homutov <vl@nginx.com>
parents: 7774
diff changeset
247 uint32_t trunc;
7706
1f002206a59b Added boundaries checks into frame parser.
Vladimir Homutov <vl@nginx.com>
parents: 7703
diff changeset
248 uint8_t flags;
7690
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
249 uint32_t version;
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parents:
diff changeset
250 ngx_str_t token;
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Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
251 enum ssl_encryption_level_t level;
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parents:
diff changeset
252
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
253 /* filled in by parser */
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parents:
diff changeset
254 ngx_buf_t *raw; /* udp datagram */
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parents:
diff changeset
255
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
256 u_char *data; /* quic packet */
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
257 size_t len;
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parents:
diff changeset
258
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
259 /* cleartext fields */
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parents:
diff changeset
260 ngx_str_t dcid;
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parents:
diff changeset
261 ngx_str_t scid;
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parents:
diff changeset
262 uint64_t pn;
7754
ebd5c71b9f02 Got rid of memory allocation in decryption.
Vladimir Homutov <vl@nginx.com>
parents: 7752
diff changeset
263 u_char *plaintext;
ebd5c71b9f02 Got rid of memory allocation in decryption.
Vladimir Homutov <vl@nginx.com>
parents: 7752
diff changeset
264 ngx_str_t payload; /* decrypted data */
7774
e10b4c61420f Implemented retransmission and retransmit queue.
Vladimir Homutov <vl@nginx.com>
parents: 7773
diff changeset
265
7785
29354c6fc5f2 TLS Key Update in QUIC.
Sergey Kandaurov <pluknet@nginx.com>
parents: 7781
diff changeset
266 unsigned need_ack:1;
29354c6fc5f2 TLS Key Update in QUIC.
Sergey Kandaurov <pluknet@nginx.com>
parents: 7781
diff changeset
267 unsigned key_phase:1;
29354c6fc5f2 TLS Key Update in QUIC.
Sergey Kandaurov <pluknet@nginx.com>
parents: 7781
diff changeset
268 unsigned key_update:1;
7690
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
269 } ngx_quic_header_t;
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parents:
diff changeset
270
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parents:
diff changeset
271
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
272 u_char *ngx_quic_error_text(uint64_t error_code);
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
273
ae35ccba7aa6 Extracted transport part of the code into separate file.
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parents:
diff changeset
274 ngx_int_t ngx_quic_parse_long_header(ngx_quic_header_t *pkt);
7751
f85749b60e58 Removed memory allocations from encryption code.
Vladimir Homutov <vl@nginx.com>
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275 size_t ngx_quic_create_long_header(ngx_quic_header_t *pkt, u_char *out,
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276 size_t pkt_len, u_char **pnp);
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277
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278 ngx_int_t ngx_quic_parse_short_header(ngx_quic_header_t *pkt,
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279 ngx_str_t *dcid);
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280 size_t ngx_quic_create_short_header(ngx_quic_header_t *pkt, u_char *out,
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281 size_t pkt_len, u_char **pnp);
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282
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283 ngx_int_t ngx_quic_parse_initial_header(ngx_quic_header_t *pkt);
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284 ngx_int_t ngx_quic_parse_handshake_header(ngx_quic_header_t *pkt);
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285
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286 ssize_t ngx_quic_parse_frame(ngx_quic_header_t *pkt, u_char *start, u_char *end,
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287 ngx_quic_frame_t *frame);
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288 ssize_t ngx_quic_create_frame(u_char *p, ngx_quic_frame_t *f);
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289
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290 ssize_t ngx_quic_parse_ack_range(ngx_quic_header_t *pkt, u_char *start,
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291 u_char *end, uint64_t *gap, uint64_t *range);
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292
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293 ngx_int_t ngx_quic_parse_transport_params(u_char *p, u_char *end,
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294 ngx_quic_tp_t *tp, ngx_log_t *log);
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295 ssize_t ngx_quic_create_transport_params(u_char *p, u_char *end,
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296 ngx_quic_tp_t *tp);
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297
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298 #endif /* _NGX_EVENT_QUIC_WIRE_H_INCLUDED_ */