Mercurial > hg > nginx
view src/event/quic/ngx_event_quic.h @ 8782:b3f6ad181df4 quic
QUIC: refactored CRYPTO and STREAM buffer ordering.
Generic function ngx_quic_order_bufs() is introduced. This function creates
and maintains a chain of buffers with holes. Holes are marked with b->sync
flag. Several buffers and holes in this chain may share the same underlying
memory buffer.
When processing STREAM frames with this function, frame data is copied only
once to the right place in the stream input chain. Previously data could
be copied twice. First when buffering an out-of-order frame data, and then
when filling stream buffer from ordered frame queue. Now there's only one
data chain for both tasks.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 25 May 2021 13:55:12 +0300 |
parents | f52a2b77d406 |
children | 60c6e8d8d3ae |
line wrap: on
line source
/* * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_QUIC_H_INCLUDED_ #define _NGX_EVENT_QUIC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #ifndef NGX_QUIC_DRAFT_VERSION #define NGX_QUIC_DRAFT_VERSION 29 #endif #define NGX_QUIC_MAX_UDP_PAYLOAD_SIZE 65527 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25 #define NGX_QUIC_DEFAULT_HOST_KEY_LEN 32 #define NGX_QUIC_SR_KEY_LEN 32 #define NGX_QUIC_AV_KEY_LEN 32 #define NGX_QUIC_SR_TOKEN_LEN 16 #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 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; ngx_str_t host_key; u_char av_token_key[NGX_QUIC_AV_KEY_LEN]; u_char sr_token_key[NGX_QUIC_SR_KEY_LEN]; } ngx_quic_conf_t; struct ngx_quic_stream_s { ngx_rbtree_node_t node; ngx_connection_t *parent; ngx_connection_t *connection; uint64_t id; uint64_t acked; uint64_t send_max_data; uint64_t recv_max_data; uint64_t recv_offset; uint64_t final_size; ngx_chain_t *in; ngx_uint_t cancelable; /* unsigned cancelable:1; */ }; 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); void ngx_quic_shutdown_connection(ngx_connection_t *c, ngx_uint_t err, const char *reason); ngx_int_t ngx_quic_reset_stream(ngx_connection_t *c, ngx_uint_t err); 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); ngx_int_t ngx_quic_derive_key(ngx_log_t *log, const char *label, ngx_str_t *secret, ngx_str_t *salt, u_char *out, size_t len); #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */