Mercurial > hg > nginx
view src/core/ngx_regex.h @ 9143:48691bab4474
QUIC: fixed probe-congestion deadlock.
When probe timeout expired while congestion window was exhausted, probe PINGs
could not be sent. As a result, lost packets could not be declared lost and
congestion window could not be freed for new packets. This deadlock
continued until connection idle timeout expiration.
Now PINGs are sent separately from the frame queue without congestion control,
as specified by RFC 9002, Section 7:
An endpoint MUST NOT send a packet if it would cause bytes_in_flight
(see Appendix B.2) to be larger than the congestion window, unless the
packet is sent on a PTO timer expiration (see Section 6.2) or when entering
recovery (see Section 7.3.2).
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Mon, 14 Aug 2023 08:28:30 +0400 |
parents | d07456044b61 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_REGEX_H_INCLUDED_ #define _NGX_REGEX_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_PCRE2) #define PCRE2_CODE_UNIT_WIDTH 8 #include <pcre2.h> #define NGX_REGEX_NO_MATCHED PCRE2_ERROR_NOMATCH /* -1 */ typedef pcre2_code ngx_regex_t; #else #include <pcre.h> #define NGX_REGEX_NO_MATCHED PCRE_ERROR_NOMATCH /* -1 */ typedef struct { pcre *code; pcre_extra *extra; } ngx_regex_t; #endif #define NGX_REGEX_CASELESS 0x00000001 #define NGX_REGEX_MULTILINE 0x00000002 typedef struct { ngx_str_t pattern; ngx_pool_t *pool; ngx_uint_t options; ngx_regex_t *regex; int captures; int named_captures; int name_size; u_char *names; ngx_str_t err; } ngx_regex_compile_t; typedef struct { ngx_regex_t *regex; u_char *name; } ngx_regex_elt_t; void ngx_regex_init(void); ngx_int_t ngx_regex_compile(ngx_regex_compile_t *rc); ngx_int_t ngx_regex_exec(ngx_regex_t *re, ngx_str_t *s, int *captures, ngx_uint_t size); #if (NGX_PCRE2) #define ngx_regex_exec_n "pcre2_match()" #else #define ngx_regex_exec_n "pcre_exec()" #endif ngx_int_t ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log); #endif /* _NGX_REGEX_H_INCLUDED_ */