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annotate src/core/ngx_syslog.h @ 5992:174512857ccf

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Cache: do not inherit last_modified and etag from stale response. When replacing a stale cache entry, its last_modified and etag could be inherited from the old entry if the response code is not 200 or 206. Moreover, etag could be inherited with any response code if it's missing in the new response. As a result, the cache entry is left with invalid last_modified or etag which could lead to broken revalidation. For example, when a file is deleted from backend, its last_modified is copied to the new 404 cache entry and is used later for revalidation. Once the old file appears again with its original timestamp, revalidation succeeds and the cached 404 response is sent to client instead of the file. The problem appeared with etags in 44b9ab7752e3 (1.7.3) and affected last_modified in 1573fc7875fa (1.7.9).
author Roman Arutyunyan <arut@nginx.com>
date Mon, 02 Mar 2015 19:47:13 +0300
parents 2cb5275bf5e7
children a6a2016b8e31
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5702
777202558122 Added syslog support for error_log and access_log directives.
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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7 #ifndef _NGX_SYSLOG_H_INCLUDED_
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8 #define _NGX_SYSLOG_H_INCLUDED_
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11 typedef struct {
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12 ngx_pool_t *pool;
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13 ngx_uint_t facility;
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14 ngx_uint_t severity;
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15 ngx_str_t tag;
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17 ngx_addr_t server;
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18 ngx_connection_t conn;
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2cb5275bf5e7 Syslog: enabled logging of send errors.
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19 ngx_uint_t busy; /* unsigned busy:1; */
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20 } ngx_syslog_peer_t;
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23 char *ngx_syslog_process_conf(ngx_conf_t *cf, ngx_syslog_peer_t *peer);
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24 u_char *ngx_syslog_add_header(ngx_syslog_peer_t *peer, u_char *buf);
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25 void ngx_syslog_writer(ngx_log_t *log, ngx_uint_t level, u_char *buf,
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26 size_t len);
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27 ssize_t ngx_syslog_send(ngx_syslog_peer_t *peer, u_char *buf, size_t len);
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30 #endif /* _NGX_SYSLOG_H_INCLUDED_ */