Mercurial > hg > nginx
view src/event/quic/ngx_event_quic_protection.h @ 8946:56dec0d4e5b1 quic
QUIC: avoid excessive buffer allocations in stream output.
Previously, when a few bytes were send to a QUIC stream by the application, a
4K buffer was allocated for these bytes. Then a STREAM frame was created and
that entire buffer was used as data for that frame. The frame with the buffer
were in use up until the frame was acked by client. Meanwhile, when more
bytes were send to the stream, more buffers were allocated and assigned as
data to newer STREAM frames. In this scenario most buffer memory is unused.
Now the unused part of the stream output buffer is available for further
stream output while earlier parts of the buffer are waiting to be acked.
This is achieved by splitting the output buffer.
| author | Roman Arutyunyan <arut@nginx.com> |
|---|---|
| date | Fri, 24 Dec 2021 18:13:51 +0300 |
| parents | 3341e4089c6c |
| children | d8865baab732 |
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) ngx_quic_keys_t *ngx_quic_keys_new(ngx_pool_t *pool); ngx_int_t ngx_quic_keys_set_initial_secret(ngx_pool_t *pool, ngx_quic_keys_t *keys, ngx_str_t *secret, uint32_t version); ngx_int_t ngx_quic_keys_set_encryption_secret(ngx_pool_t *pool, 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); #endif /* _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_ */