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view src/http/v3/ngx_http_v3_encode.h @ 8989:81a3429db8b0 quic

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HTTP/3: delayed Insert Count Increment instruction. Sending the instruction is delayed until the end of the current event cycle. Delaying the instruction is allowed by quic-qpack-21, section 2.2.2.3. The goal is to reduce the amount of data sent back to client by accumulating several inserts in one instruction and sometimes not sending the instruction at all, if Section Acknowledgement was sent just before it.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 27 Jan 2022 12:20:47 +0300
parents 0ac25efb2da3
children
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/*
 * Copyright (C) Roman Arutyunyan
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_HTTP_V3_ENCODE_H_INCLUDED_
#define _NGX_HTTP_V3_ENCODE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>


uintptr_t ngx_http_v3_encode_varlen_int(u_char *p, uint64_t value);
uintptr_t ngx_http_v3_encode_prefix_int(u_char *p, uint64_t value,
    ngx_uint_t prefix);

uintptr_t ngx_http_v3_encode_field_section_prefix(u_char *p,
    ngx_uint_t insert_count, ngx_uint_t sign, ngx_uint_t delta_base);
uintptr_t ngx_http_v3_encode_field_ri(u_char *p, ngx_uint_t dynamic,
    ngx_uint_t index);
uintptr_t ngx_http_v3_encode_field_lri(u_char *p, ngx_uint_t dynamic,
    ngx_uint_t index, u_char *data, size_t len);
uintptr_t ngx_http_v3_encode_field_l(u_char *p, ngx_str_t *name,
    ngx_str_t *value);
uintptr_t ngx_http_v3_encode_field_pbi(u_char *p, ngx_uint_t index);
uintptr_t ngx_http_v3_encode_field_lpbi(u_char *p, ngx_uint_t index,
    u_char *data, size_t len);


#endif /* _NGX_HTTP_V3_ENCODE_H_INCLUDED_ */