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annotate src/event/ngx_event_posted.c @ 5935:1573fc7875fa

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Cache: send conditional requests only for cached 200/206 responses. RFC7232 says: The 304 (Not Modified) status code indicates that a conditional GET or HEAD request has been received and would have resulted in a 200 (OK) response if it were not for the fact that the condition evaluated to false. which means that there is no reason to send requests with "If-None-Match" and/or "If-Modified-Since" headers for responses cached with other status codes. Also, sending conditional requests for responses cached with other status codes could result in a strange behavior, e.g. upstream server returning 304 Not Modified for cached 404 Not Found responses, etc. Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
author Piotr Sikora <piotr@cloudflare.com>
date Wed, 26 Nov 2014 18:35:37 -0800
parents 3f5f0ab59b35
children 9d2ad2fb4423
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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4 * Copyright (C) Nginx, Inc.
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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6b91bfbc4123 nginx-0.0.3-2004-04-05-00:32:09 import
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8 #include <ngx_config.h>
6b91bfbc4123 nginx-0.0.3-2004-04-05-00:32:09 import
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9 #include <ngx_core.h>
6b91bfbc4123 nginx-0.0.3-2004-04-05-00:32:09 import
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10 #include <ngx_event.h>
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13 ngx_queue_t ngx_posted_accept_events;
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14 ngx_queue_t ngx_posted_events;
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9c2f3ed7a247 nginx-0.3.3-RELEASE import
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17 void
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18 ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted)
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19 {
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20 ngx_queue_t *q;
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21 ngx_event_t *ev;
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23 while (!ngx_queue_empty(posted)) {
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24
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25 q = ngx_queue_head(posted);
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26 ev = ngx_queue_data(q, ngx_event_t, queue);
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28 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
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29 "posted event %p", ev);
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744ccb59062d nginx-0.0.7-2004-07-02-19:54:34 import
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31 ngx_delete_posted_event(ev);
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33 ev->handler(ev);
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34 }
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35 }