Mercurial > hg > nginx-quic
view src/core/ngx_regex.h @ 7440:6d4bc025c5a7
Prevented scheduling events on a shared connection.
A shared connection does not own its file descriptor, which means that
ngx_handle_read_event/ngx_handle_write_event calls should do nothing for it.
Currently the c->shared flag is checked in several places in the stream proxy
module prior to calling these functions. However it was not done everywhere.
Missing checks could lead to calling
ngx_handle_read_event/ngx_handle_write_event on shared connections.
The problem manifested itself when using proxy_upload_rate and resulted in
either duplicate file descriptor error (e.g. with epoll) or incorrect further
udp packet processing (e.g. with kqueue).
The fix is to set and reset the event active flag in a way that prevents
ngx_handle_read_event/ngx_handle_write_event from scheduling socket events.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Mon, 14 Jan 2019 20:36:23 +0300 |
parents | 6e1a48bcf915 |
children | 0b5f12d5c531 |
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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> #include <pcre.h> #define NGX_REGEX_NO_MATCHED PCRE_ERROR_NOMATCH /* -1 */ #define NGX_REGEX_CASELESS PCRE_CASELESS typedef struct { pcre *code; pcre_extra *extra; } ngx_regex_t; typedef struct { ngx_str_t pattern; ngx_pool_t *pool; ngx_int_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); #define ngx_regex_exec(re, s, captures, size) \ pcre_exec(re->code, re->extra, (const char *) (s)->data, (s)->len, 0, 0, \ captures, size) #define ngx_regex_exec_n "pcre_exec()" ngx_int_t ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log); #endif /* _NGX_REGEX_H_INCLUDED_ */