Mercurial > hg > nginx-quic
view src/os/win32/ngx_time.h @ 7386:9200b41db765 stable-1.14
HTTP/2: limit the number of idle state switches.
An attack that continuously switches HTTP/2 connection between
idle and active states can result in excessive CPU usage.
This is because when a connection switches to the idle state,
all of its memory pool caches are freed.
This change limits the maximum allowed number of idle state
switches to 10 * http2_max_requests (i.e., 10000 by default).
This limits possible CPU usage in one connection, and also
imposes a limit on the maximum lifetime of a connection.
Initially reported by Gal Goldshtein from F5 Networks.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Tue, 06 Nov 2018 16:29:49 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_TIME_H_INCLUDED_ #define _NGX_TIME_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef ngx_rbtree_key_t ngx_msec_t; typedef ngx_rbtree_key_int_t ngx_msec_int_t; typedef SYSTEMTIME ngx_tm_t; typedef FILETIME ngx_mtime_t; #define ngx_tm_sec wSecond #define ngx_tm_min wMinute #define ngx_tm_hour wHour #define ngx_tm_mday wDay #define ngx_tm_mon wMonth #define ngx_tm_year wYear #define ngx_tm_wday wDayOfWeek #define ngx_tm_sec_t u_short #define ngx_tm_min_t u_short #define ngx_tm_hour_t u_short #define ngx_tm_mday_t u_short #define ngx_tm_mon_t u_short #define ngx_tm_year_t u_short #define ngx_tm_wday_t u_short #define ngx_msleep Sleep #define NGX_HAVE_GETTIMEZONE 1 #define ngx_timezone_update() ngx_int_t ngx_gettimezone(void); void ngx_libc_localtime(time_t s, struct tm *tm); void ngx_libc_gmtime(time_t s, struct tm *tm); void ngx_gettimeofday(struct timeval *tp); #endif /* _NGX_TIME_H_INCLUDED_ */