Mercurial > hg > nginx
view src/event/ngx_event_quic.h @ 8660:6201cef77b1d quic
QUIC: resend handshake packets along with initial.
To speed up handshake, resend both initial and handshake packets if there's
at least one unacknowledged initial packet.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Tue, 08 Dec 2020 17:10:22 +0000 |
parents | 2dfc5ef29973 |
children |
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/* * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_QUIC_H_INCLUDED_ #define _NGX_EVENT_QUIC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* Supported drafts: 27, 28, 29 */ #ifndef NGX_QUIC_DRAFT_VERSION #define NGX_QUIC_DRAFT_VERSION 29 #endif #define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */ #define NGX_QUIC_MAX_LONG_HEADER 56 /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */ #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT 1252 #define NGX_QUIC_MAX_UDP_PAYLOAD_OUT6 1232 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25 #define NGX_QUIC_DEFAULT_SRT_KEY_LEN 32 #define NGX_QUIC_RETRY_TIMEOUT 3000 #define NGX_QUIC_RETRY_LIFETIME 30000 #define NGX_QUIC_RETRY_BUFFER_SIZE 128 /* 1 flags + 4 version + 3 x (1 + 20) s/o/dcid + itag + token(44) */ #define NGX_QUIC_MAX_TOKEN_SIZE 32 /* sizeof(struct in6_addr) + sizeof(ngx_msec_t) up to AES-256 block size */ /* quic-recovery, section 6.2.2, kInitialRtt */ #define NGX_QUIC_INITIAL_RTT 333 /* ms */ /* quic-recovery, section 6.1.1, Packet Threshold */ #define NGX_QUIC_PKT_THR 3 /* packets */ /* quic-recovery, section 6.1.2, Time Threshold */ #define NGX_QUIC_TIME_THR 1.125 #define NGX_QUIC_TIME_GRANULARITY 1 /* ms */ #define NGX_QUIC_CC_MIN_INTERVAL 1000 /* 1s */ #define NGX_QUIC_MIN_INITIAL_SIZE 1200 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02 #define NGX_QUIC_STREAM_BUFSIZE 65536 #define NGX_QUIC_MAX_CID_LEN 20 #define NGX_QUIC_SERVER_CID_LEN NGX_QUIC_MAX_CID_LEN #define NGX_QUIC_SR_TOKEN_LEN 16 #define NGX_QUIC_MAX_SERVER_IDS 8 #define NGX_QUIC_BUFFER_SIZE 4096 #define ngx_quic_get_connection(c) ((ngx_quic_connection_t *)(c)->udp) typedef struct { /* configurable */ ngx_msec_t max_idle_timeout; ngx_msec_t max_ack_delay; size_t max_udp_payload_size; size_t initial_max_data; size_t initial_max_stream_data_bidi_local; size_t initial_max_stream_data_bidi_remote; size_t initial_max_stream_data_uni; ngx_uint_t initial_max_streams_bidi; ngx_uint_t initial_max_streams_uni; ngx_uint_t ack_delay_exponent; ngx_uint_t active_connection_id_limit; ngx_flag_t disable_active_migration; ngx_str_t original_dcid; ngx_str_t initial_scid; ngx_str_t retry_scid; u_char sr_token[NGX_QUIC_SR_TOKEN_LEN]; /* TODO */ void *preferred_address; } ngx_quic_tp_t; typedef struct { ngx_ssl_t *ssl; ngx_quic_tp_t tp; ngx_flag_t retry; ngx_flag_t require_alpn; u_char token_key[32]; /* AES 256 */ ngx_str_t sr_token_key; /* stateless reset token key */ } ngx_quic_conf_t; typedef struct { uint64_t sent; uint64_t received; ngx_queue_t frames; /* reorder queue */ size_t total; /* size of buffered data */ } ngx_quic_frames_stream_t; struct ngx_quic_stream_s { ngx_rbtree_node_t node; ngx_connection_t *parent; ngx_connection_t *c; uint64_t id; uint64_t acked; uint64_t send_max_data; ngx_buf_t *b; ngx_quic_frames_stream_t fs; }; typedef struct ngx_quic_keys_s ngx_quic_keys_t; void ngx_quic_run(ngx_connection_t *c, ngx_quic_conf_t *conf); ngx_connection_t *ngx_quic_open_stream(ngx_connection_t *c, ngx_uint_t bidi); void ngx_quic_finalize_connection(ngx_connection_t *c, ngx_uint_t err, const char *reason); uint32_t ngx_quic_version(ngx_connection_t *c); ngx_int_t ngx_quic_get_packet_dcid(ngx_log_t *log, u_char *data, size_t len, ngx_str_t *dcid); /********************************* DEBUG *************************************/ /* #define NGX_QUIC_DEBUG_PACKETS */ /* dump packet contents */ /* #define NGX_QUIC_DEBUG_FRAMES */ /* dump frames contents */ /* #define NGX_QUIC_DEBUG_ALLOC */ /* log frames and bufs alloc */ /* #define NGX_QUIC_DEBUG_CRYPTO */ #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */