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annotate src/event/ngx_event_posted.h @ 7286:d27aa9060c95

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Stream: udp streams. Previously, only one client packet could be processed in a udp stream session even though multiple response packets were supported. Now multiple packets coming from the same client address and port are delivered to the same stream session. If it's required to maintain a single stream of data, nginx should be configured in a way that all packets from a client are delivered to the same worker. On Linux and DragonFly BSD the "reuseport" parameter should be specified for this. Other systems do not currently provide appropriate mechanisms. For these systems a single stream of udp packets is only guaranteed in single-worker configurations. The proxy_response directive now specifies how many packets are expected in response to a single client packet.
author Roman Arutyunyan <arut@nginx.com>
date Mon, 04 Jun 2018 19:50:00 +0300
parents 3d4730eada9c
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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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_EVENT_POSTED_H_INCLUDED_
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9 #define _NGX_EVENT_POSTED_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_event.h>
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17 #define ngx_post_event(ev, q) \
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18 \
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19 if (!(ev)->posted) { \
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20 (ev)->posted = 1; \
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21 ngx_queue_insert_tail(q, &(ev)->queue); \
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22 \
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23 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, "post event %p", ev);\
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24 \
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25 } else { \
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26 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, \
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27 "update posted event %p", ev); \
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28 }
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31 #define ngx_delete_posted_event(ev) \
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32 \
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33 (ev)->posted = 0; \
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34 ngx_queue_remove(&(ev)->queue); \
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35 \
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36 ngx_log_debug1(NGX_LOG_DEBUG_CORE, (ev)->log, 0, \
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37 "delete posted event %p", ev);
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41 void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_queue_t *posted);
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44 extern ngx_queue_t ngx_posted_accept_events;
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45 extern ngx_queue_t ngx_posted_events;
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48 #endif /* _NGX_EVENT_POSTED_H_INCLUDED_ */