Mercurial > hg > nginx-quic
view src/event/quic/ngx_event_quic_protection.h @ 9078:9553eea74f2a quic
QUIC: optimized immediate close.
Previously, before sending CONNECTION_CLOSE to client, all pending frames
were sent. This is redundant and could prevent CONNECTION_CLOSE from being
sent due to congestion control. Now pending frames are freed and
CONNECTION_CLOSE is sent without congestion control, as advised by RFC 9002:
Packets containing frames besides ACK or CONNECTION_CLOSE frames
count toward congestion control limits and are considered to be in flight.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 02 May 2023 17:54:53 +0400 |
parents | 7da4791e0264 |
children |
line wrap: on
line source
/* * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_ #define _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event_quic_transport.h> #define NGX_QUIC_ENCRYPTION_LAST ((ssl_encryption_application) + 1) /* RFC 5116, 5.1 and RFC 8439, 2.3 for all supported ciphers */ #define NGX_QUIC_IV_LEN 12 /* largest hash used in TLS is SHA-384 */ #define NGX_QUIC_MAX_MD_SIZE 48 #ifdef OPENSSL_IS_BORINGSSL #define ngx_quic_cipher_t EVP_AEAD #else #define ngx_quic_cipher_t EVP_CIPHER #endif typedef struct { size_t len; u_char data[NGX_QUIC_MAX_MD_SIZE]; } ngx_quic_md_t; typedef struct { size_t len; u_char data[NGX_QUIC_IV_LEN]; } ngx_quic_iv_t; typedef struct { ngx_quic_md_t secret; ngx_quic_md_t key; ngx_quic_iv_t iv; ngx_quic_md_t hp; } ngx_quic_secret_t; typedef struct { ngx_quic_secret_t client; ngx_quic_secret_t server; } ngx_quic_secrets_t; struct ngx_quic_keys_s { ngx_quic_secrets_t secrets[NGX_QUIC_ENCRYPTION_LAST]; ngx_quic_secrets_t next_key; ngx_uint_t cipher; }; typedef struct { const ngx_quic_cipher_t *c; const EVP_CIPHER *hp; const EVP_MD *d; } ngx_quic_ciphers_t; typedef struct { size_t out_len; u_char *out; size_t prk_len; const uint8_t *prk; size_t label_len; const u_char *label; } ngx_quic_hkdf_t; #define ngx_quic_hkdf_set(seq, _label, _out, _prk) \ (seq)->out_len = (_out)->len; (seq)->out = (_out)->data; \ (seq)->prk_len = (_prk)->len, (seq)->prk = (_prk)->data, \ (seq)->label_len = (sizeof(_label) - 1); (seq)->label = (u_char *)(_label); ngx_int_t ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys, ngx_str_t *secret, ngx_log_t *log); ngx_int_t ngx_quic_keys_set_encryption_secret(ngx_log_t *log, ngx_uint_t is_write, ngx_quic_keys_t *keys, enum ssl_encryption_level_t level, const SSL_CIPHER *cipher, const uint8_t *secret, size_t secret_len); ngx_uint_t ngx_quic_keys_available(ngx_quic_keys_t *keys, enum ssl_encryption_level_t level); void ngx_quic_keys_discard(ngx_quic_keys_t *keys, enum ssl_encryption_level_t level); void ngx_quic_keys_switch(ngx_connection_t *c, ngx_quic_keys_t *keys); ngx_int_t ngx_quic_keys_update(ngx_connection_t *c, ngx_quic_keys_t *keys); ngx_int_t ngx_quic_encrypt(ngx_quic_header_t *pkt, ngx_str_t *res); ngx_int_t ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn); void ngx_quic_compute_nonce(u_char *nonce, size_t len, uint64_t pn); ngx_int_t ngx_quic_ciphers(ngx_uint_t id, ngx_quic_ciphers_t *ciphers, enum ssl_encryption_level_t level); ngx_int_t ngx_quic_tls_seal(const ngx_quic_cipher_t *cipher, ngx_quic_secret_t *s, ngx_str_t *out, u_char *nonce, ngx_str_t *in, ngx_str_t *ad, ngx_log_t *log); ngx_int_t ngx_quic_hkdf_expand(ngx_quic_hkdf_t *hkdf, const EVP_MD *digest, ngx_log_t *log); #endif /* _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_ */