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Cache: fixed minimum cache keys zone size limit. Size of a shared memory zones must be at least two pages - one page for slab allocator internal data, and another page for actual allocations. Using 8192 instead is wrong, as there are systems with page sizes other than 4096. Note well that two pages is usually too low as well. In particular, cache is likely to use two allocations of different sizes for global structures, and at least four pages will be needed to properly allocate cache nodes. Except in a few very special cases, with keys zone of just two pages nginx won't be able to start. Other uses of shared memory impose a limit of 8 pages, which provides some room for global allocations. This patch doesn't try to address this though. Inspired by ticket #1665.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 31 Oct 2018 16:49:39 +0300
parents 7f955d3b9a0d
children e970de27966a
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_STREAM_SSL_H_INCLUDED_
#define _NGX_STREAM_SSL_H_INCLUDED_


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


typedef struct {
    ngx_msec_t       handshake_timeout;

    ngx_flag_t       prefer_server_ciphers;

    ngx_ssl_t        ssl;

    ngx_uint_t       listen;
    ngx_uint_t       protocols;

    ngx_uint_t       verify;
    ngx_uint_t       verify_depth;

    ssize_t          builtin_session_cache;

    time_t           session_timeout;

    ngx_array_t     *certificates;
    ngx_array_t     *certificate_keys;

    ngx_str_t        dhparam;
    ngx_str_t        ecdh_curve;
    ngx_str_t        client_certificate;
    ngx_str_t        trusted_certificate;
    ngx_str_t        crl;

    ngx_str_t        ciphers;

    ngx_array_t     *passwords;

    ngx_shm_zone_t  *shm_zone;

    ngx_flag_t       session_tickets;
    ngx_array_t     *session_ticket_keys;

    u_char          *file;
    ngx_uint_t       line;
} ngx_stream_ssl_conf_t;


extern ngx_module_t  ngx_stream_ssl_module;


#endif /* _NGX_STREAM_SSL_H_INCLUDED_ */