Mercurial > hg > nginx
annotate src/http/modules/ngx_http_upstream_keepalive_module.c @ 8620:d10118e38943 quic
QUIC: refactored SSL_do_handshake() handling.
No functional changes.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Thu, 29 Oct 2020 21:50:49 +0000 |
parents | 3939483cd1b5 |
children | fdc3d40979b0 |
rev | line source |
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4127 | 1 |
2 /* | |
3 * Copyright (C) Maxim Dounin | |
4412 | 4 * Copyright (C) Nginx, Inc. |
4127 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
13 typedef struct { | |
14 ngx_uint_t max_cached; | |
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15 ngx_uint_t requests; |
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16 ngx_msec_t timeout; |
4127 | 17 |
18 ngx_queue_t cache; | |
19 ngx_queue_t free; | |
20 | |
21 ngx_http_upstream_init_pt original_init_upstream; | |
22 ngx_http_upstream_init_peer_pt original_init_peer; | |
23 | |
24 } ngx_http_upstream_keepalive_srv_conf_t; | |
25 | |
26 | |
27 typedef struct { | |
28 ngx_http_upstream_keepalive_srv_conf_t *conf; | |
29 | |
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30 ngx_queue_t queue; |
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31 ngx_connection_t *connection; |
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32 |
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33 socklen_t socklen; |
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34 ngx_sockaddr_t sockaddr; |
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35 |
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36 } ngx_http_upstream_keepalive_cache_t; |
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37 |
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38 |
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39 typedef struct { |
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40 ngx_http_upstream_keepalive_srv_conf_t *conf; |
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41 |
4127 | 42 ngx_http_upstream_t *upstream; |
43 | |
44 void *data; | |
45 | |
46 ngx_event_get_peer_pt original_get_peer; | |
47 ngx_event_free_peer_pt original_free_peer; | |
48 | |
49 #if (NGX_HTTP_SSL) | |
50 ngx_event_set_peer_session_pt original_set_session; | |
51 ngx_event_save_peer_session_pt original_save_session; | |
52 #endif | |
53 | |
54 } ngx_http_upstream_keepalive_peer_data_t; | |
55 | |
56 | |
57 static ngx_int_t ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, | |
58 ngx_http_upstream_srv_conf_t *us); | |
59 static ngx_int_t ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, | |
60 void *data); | |
61 static void ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, | |
62 void *data, ngx_uint_t state); | |
63 | |
64 static void ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev); | |
65 static void ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev); | |
66 static void ngx_http_upstream_keepalive_close(ngx_connection_t *c); | |
67 | |
68 #if (NGX_HTTP_SSL) | |
69 static ngx_int_t ngx_http_upstream_keepalive_set_session( | |
70 ngx_peer_connection_t *pc, void *data); | |
71 static void ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, | |
72 void *data); | |
73 #endif | |
74 | |
75 static void *ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf); | |
76 static char *ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, | |
77 void *conf); | |
78 | |
79 | |
80 static ngx_command_t ngx_http_upstream_keepalive_commands[] = { | |
81 | |
82 { ngx_string("keepalive"), | |
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83 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1, |
4127 | 84 ngx_http_upstream_keepalive, |
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85 NGX_HTTP_SRV_CONF_OFFSET, |
4127 | 86 0, |
87 NULL }, | |
88 | |
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89 { ngx_string("keepalive_timeout"), |
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90 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1, |
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91 ngx_conf_set_msec_slot, |
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92 NGX_HTTP_SRV_CONF_OFFSET, |
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93 offsetof(ngx_http_upstream_keepalive_srv_conf_t, timeout), |
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94 NULL }, |
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95 |
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96 { ngx_string("keepalive_requests"), |
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97 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1, |
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98 ngx_conf_set_num_slot, |
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99 NGX_HTTP_SRV_CONF_OFFSET, |
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100 offsetof(ngx_http_upstream_keepalive_srv_conf_t, requests), |
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101 NULL }, |
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102 |
4127 | 103 ngx_null_command |
104 }; | |
105 | |
106 | |
107 static ngx_http_module_t ngx_http_upstream_keepalive_module_ctx = { | |
108 NULL, /* preconfiguration */ | |
109 NULL, /* postconfiguration */ | |
110 | |
111 NULL, /* create main configuration */ | |
112 NULL, /* init main configuration */ | |
113 | |
114 ngx_http_upstream_keepalive_create_conf, /* create server configuration */ | |
115 NULL, /* merge server configuration */ | |
116 | |
117 NULL, /* create location configuration */ | |
118 NULL /* merge location configuration */ | |
119 }; | |
120 | |
121 | |
122 ngx_module_t ngx_http_upstream_keepalive_module = { | |
123 NGX_MODULE_V1, | |
124 &ngx_http_upstream_keepalive_module_ctx, /* module context */ | |
125 ngx_http_upstream_keepalive_commands, /* module directives */ | |
126 NGX_HTTP_MODULE, /* module type */ | |
127 NULL, /* init master */ | |
128 NULL, /* init module */ | |
129 NULL, /* init process */ | |
130 NULL, /* init thread */ | |
131 NULL, /* exit thread */ | |
132 NULL, /* exit process */ | |
133 NULL, /* exit master */ | |
134 NGX_MODULE_V1_PADDING | |
135 }; | |
136 | |
137 | |
138 static ngx_int_t | |
139 ngx_http_upstream_init_keepalive(ngx_conf_t *cf, | |
140 ngx_http_upstream_srv_conf_t *us) | |
141 { | |
142 ngx_uint_t i; | |
143 ngx_http_upstream_keepalive_srv_conf_t *kcf; | |
144 ngx_http_upstream_keepalive_cache_t *cached; | |
145 | |
146 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, | |
147 "init keepalive"); | |
148 | |
149 kcf = ngx_http_conf_upstream_srv_conf(us, | |
150 ngx_http_upstream_keepalive_module); | |
151 | |
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152 ngx_conf_init_msec_value(kcf->timeout, 60000); |
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153 ngx_conf_init_uint_value(kcf->requests, 100); |
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154 |
4127 | 155 if (kcf->original_init_upstream(cf, us) != NGX_OK) { |
156 return NGX_ERROR; | |
157 } | |
158 | |
159 kcf->original_init_peer = us->peer.init; | |
160 | |
161 us->peer.init = ngx_http_upstream_init_keepalive_peer; | |
162 | |
163 /* allocate cache items and add to free queue */ | |
164 | |
165 cached = ngx_pcalloc(cf->pool, | |
166 sizeof(ngx_http_upstream_keepalive_cache_t) * kcf->max_cached); | |
167 if (cached == NULL) { | |
168 return NGX_ERROR; | |
169 } | |
170 | |
171 ngx_queue_init(&kcf->cache); | |
172 ngx_queue_init(&kcf->free); | |
173 | |
174 for (i = 0; i < kcf->max_cached; i++) { | |
175 ngx_queue_insert_head(&kcf->free, &cached[i].queue); | |
176 cached[i].conf = kcf; | |
177 } | |
178 | |
179 return NGX_OK; | |
180 } | |
181 | |
182 | |
183 static ngx_int_t | |
184 ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, | |
185 ngx_http_upstream_srv_conf_t *us) | |
186 { | |
187 ngx_http_upstream_keepalive_peer_data_t *kp; | |
188 ngx_http_upstream_keepalive_srv_conf_t *kcf; | |
189 | |
190 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
191 "init keepalive peer"); | |
192 | |
193 kcf = ngx_http_conf_upstream_srv_conf(us, | |
194 ngx_http_upstream_keepalive_module); | |
195 | |
196 kp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_keepalive_peer_data_t)); | |
197 if (kp == NULL) { | |
198 return NGX_ERROR; | |
199 } | |
200 | |
201 if (kcf->original_init_peer(r, us) != NGX_OK) { | |
202 return NGX_ERROR; | |
203 } | |
204 | |
205 kp->conf = kcf; | |
206 kp->upstream = r->upstream; | |
207 kp->data = r->upstream->peer.data; | |
208 kp->original_get_peer = r->upstream->peer.get; | |
209 kp->original_free_peer = r->upstream->peer.free; | |
210 | |
211 r->upstream->peer.data = kp; | |
212 r->upstream->peer.get = ngx_http_upstream_get_keepalive_peer; | |
213 r->upstream->peer.free = ngx_http_upstream_free_keepalive_peer; | |
214 | |
215 #if (NGX_HTTP_SSL) | |
216 kp->original_set_session = r->upstream->peer.set_session; | |
217 kp->original_save_session = r->upstream->peer.save_session; | |
218 r->upstream->peer.set_session = ngx_http_upstream_keepalive_set_session; | |
219 r->upstream->peer.save_session = ngx_http_upstream_keepalive_save_session; | |
220 #endif | |
221 | |
222 return NGX_OK; | |
223 } | |
224 | |
225 | |
226 static ngx_int_t | |
227 ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, void *data) | |
228 { | |
229 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
230 ngx_http_upstream_keepalive_cache_t *item; | |
231 | |
232 ngx_int_t rc; | |
233 ngx_queue_t *q, *cache; | |
234 ngx_connection_t *c; | |
235 | |
236 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
237 "get keepalive peer"); | |
238 | |
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239 /* ask balancer */ |
4127 | 240 |
241 rc = kp->original_get_peer(pc, kp->data); | |
242 | |
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243 if (rc != NGX_OK) { |
4127 | 244 return rc; |
245 } | |
246 | |
247 /* search cache for suitable connection */ | |
248 | |
249 cache = &kp->conf->cache; | |
250 | |
251 for (q = ngx_queue_head(cache); | |
252 q != ngx_queue_sentinel(cache); | |
253 q = ngx_queue_next(q)) | |
254 { | |
255 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); | |
256 c = item->connection; | |
257 | |
258 if (ngx_memn2cmp((u_char *) &item->sockaddr, (u_char *) pc->sockaddr, | |
259 item->socklen, pc->socklen) | |
260 == 0) | |
261 { | |
262 ngx_queue_remove(q); | |
263 ngx_queue_insert_head(&kp->conf->free, q); | |
264 | |
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265 goto found; |
4127 | 266 } |
267 } | |
268 | |
269 return NGX_OK; | |
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270 |
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271 found: |
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272 |
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273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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274 "get keepalive peer: using connection %p", c); |
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275 |
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276 c->idle = 0; |
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277 c->sent = 0; |
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278 c->data = NULL; |
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279 c->log = pc->log; |
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280 c->read->log = pc->log; |
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281 c->write->log = pc->log; |
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282 c->pool->log = pc->log; |
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283 |
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284 if (c->read->timer_set) { |
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285 ngx_del_timer(c->read); |
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286 } |
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287 |
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288 pc->connection = c; |
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289 pc->cached = 1; |
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290 |
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291 return NGX_DONE; |
4127 | 292 } |
293 | |
294 | |
295 static void | |
296 ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, void *data, | |
297 ngx_uint_t state) | |
298 { | |
299 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
300 ngx_http_upstream_keepalive_cache_t *item; | |
301 | |
302 ngx_queue_t *q; | |
303 ngx_connection_t *c; | |
304 ngx_http_upstream_t *u; | |
305 | |
306 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
307 "free keepalive peer"); | |
308 | |
309 /* cache valid connections */ | |
310 | |
311 u = kp->upstream; | |
312 c = pc->connection; | |
313 | |
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314 if (state & NGX_PEER_FAILED |
4127 | 315 || c == NULL |
316 || c->read->eof | |
317 || c->read->error | |
318 || c->read->timedout | |
319 || c->write->error | |
320 || c->write->timedout) | |
321 { | |
322 goto invalid; | |
323 } | |
324 | |
7340
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
325 if (c->requests >= kp->conf->requests) { |
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
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parents:
7339
diff
changeset
|
326 goto invalid; |
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Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
327 } |
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
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parents:
7339
diff
changeset
|
328 |
4127 | 329 if (!u->keepalive) { |
330 goto invalid; | |
331 } | |
332 | |
6332
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
333 if (!u->request_body_sent) { |
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
334 goto invalid; |
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
335 } |
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
336 |
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
337 if (ngx_terminate || ngx_exiting) { |
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
338 goto invalid; |
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
339 } |
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
340 |
4127 | 341 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
342 goto invalid; | |
343 } | |
344 | |
345 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
346 "free keepalive peer: saving connection %p", c); | |
347 | |
348 if (ngx_queue_empty(&kp->conf->free)) { | |
349 | |
350 q = ngx_queue_last(&kp->conf->cache); | |
351 ngx_queue_remove(q); | |
352 | |
353 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); | |
354 | |
355 ngx_http_upstream_keepalive_close(item->connection); | |
356 | |
357 } else { | |
358 q = ngx_queue_head(&kp->conf->free); | |
359 ngx_queue_remove(q); | |
360 | |
361 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); | |
362 } | |
363 | |
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
364 ngx_queue_insert_head(&kp->conf->cache, q); |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
365 |
4127 | 366 item->connection = c; |
367 | |
368 pc->connection = NULL; | |
369 | |
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
370 c->read->delayed = 0; |
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
371 ngx_add_timer(c->read, kp->conf->timeout); |
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
372 |
4127 | 373 if (c->write->timer_set) { |
374 ngx_del_timer(c->write); | |
375 } | |
376 | |
377 c->write->handler = ngx_http_upstream_keepalive_dummy_handler; | |
378 c->read->handler = ngx_http_upstream_keepalive_close_handler; | |
379 | |
380 c->data = item; | |
381 c->idle = 1; | |
382 c->log = ngx_cycle->log; | |
383 c->read->log = ngx_cycle->log; | |
384 c->write->log = ngx_cycle->log; | |
385 c->pool->log = ngx_cycle->log; | |
386 | |
387 item->socklen = pc->socklen; | |
388 ngx_memcpy(&item->sockaddr, pc->sockaddr, pc->socklen); | |
389 | |
390 if (c->read->ready) { | |
391 ngx_http_upstream_keepalive_close_handler(c->read); | |
392 } | |
393 | |
394 invalid: | |
395 | |
396 kp->original_free_peer(pc, kp->data, state); | |
397 } | |
398 | |
399 | |
400 static void | |
401 ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev) | |
402 { | |
403 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, | |
404 "keepalive dummy handler"); | |
405 } | |
406 | |
407 | |
408 static void | |
409 ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev) | |
410 { | |
411 ngx_http_upstream_keepalive_srv_conf_t *conf; | |
412 ngx_http_upstream_keepalive_cache_t *item; | |
413 | |
414 int n; | |
415 char buf[1]; | |
416 ngx_connection_t *c; | |
417 | |
418 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, | |
419 "keepalive close handler"); | |
420 | |
421 c = ev->data; | |
422 | |
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
423 if (c->close || c->read->timedout) { |
4127 | 424 goto close; |
425 } | |
426 | |
427 n = recv(c->fd, buf, 1, MSG_PEEK); | |
428 | |
429 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) { | |
5999
4d8936b1fc32
Upstream keepalive: drop ready flag on EAGAIN from recv(MSG_PEEK).
Valentin Bartenev <vbart@nginx.com>
parents:
5864
diff
changeset
|
430 ev->ready = 0; |
4127 | 431 |
432 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { | |
433 goto close; | |
434 } | |
435 | |
436 return; | |
437 } | |
438 | |
439 close: | |
440 | |
441 item = c->data; | |
442 conf = item->conf; | |
443 | |
444 ngx_http_upstream_keepalive_close(c); | |
445 | |
446 ngx_queue_remove(&item->queue); | |
447 ngx_queue_insert_head(&conf->free, &item->queue); | |
448 } | |
449 | |
450 | |
451 static void | |
452 ngx_http_upstream_keepalive_close(ngx_connection_t *c) | |
453 { | |
454 | |
455 #if (NGX_HTTP_SSL) | |
456 | |
457 if (c->ssl) { | |
458 c->ssl->no_wait_shutdown = 1; | |
459 c->ssl->no_send_shutdown = 1; | |
460 | |
461 if (ngx_ssl_shutdown(c) == NGX_AGAIN) { | |
462 c->ssl->handler = ngx_http_upstream_keepalive_close; | |
463 return; | |
464 } | |
465 } | |
466 | |
467 #endif | |
468 | |
469 ngx_destroy_pool(c->pool); | |
470 ngx_close_connection(c); | |
471 } | |
472 | |
473 | |
474 #if (NGX_HTTP_SSL) | |
475 | |
476 static ngx_int_t | |
477 ngx_http_upstream_keepalive_set_session(ngx_peer_connection_t *pc, void *data) | |
478 { | |
479 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
480 | |
481 return kp->original_set_session(pc, kp->data); | |
482 } | |
483 | |
484 | |
485 static void | |
486 ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, void *data) | |
487 { | |
488 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
489 | |
490 kp->original_save_session(pc, kp->data); | |
491 return; | |
492 } | |
493 | |
494 #endif | |
495 | |
496 | |
497 static void * | |
498 ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf) | |
499 { | |
500 ngx_http_upstream_keepalive_srv_conf_t *conf; | |
501 | |
502 conf = ngx_pcalloc(cf->pool, | |
503 sizeof(ngx_http_upstream_keepalive_srv_conf_t)); | |
504 if (conf == NULL) { | |
505 return NULL; | |
506 } | |
507 | |
508 /* | |
509 * set by ngx_pcalloc(): | |
510 * | |
511 * conf->original_init_upstream = NULL; | |
512 * conf->original_init_peer = NULL; | |
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
513 * conf->max_cached = 0; |
4127 | 514 */ |
515 | |
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
516 conf->timeout = NGX_CONF_UNSET_MSEC; |
7340
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
517 conf->requests = NGX_CONF_UNSET_UINT; |
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
518 |
4127 | 519 return conf; |
520 } | |
521 | |
522 | |
523 static char * | |
524 ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
525 { | |
526 ngx_http_upstream_srv_conf_t *uscf; | |
5213
822b82191940
Upstream keepalive: slightly simplified code.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
527 ngx_http_upstream_keepalive_srv_conf_t *kcf = conf; |
4127 | 528 |
529 ngx_int_t n; | |
530 ngx_str_t *value; | |
531 | |
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
532 if (kcf->max_cached) { |
4998
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
533 return "is duplicate"; |
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
534 } |
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
535 |
4127 | 536 /* read options */ |
537 | |
538 value = cf->args->elts; | |
539 | |
540 n = ngx_atoi(value[1].data, value[1].len); | |
541 | |
542 if (n == NGX_ERROR || n == 0) { | |
543 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
544 "invalid value \"%V\" in \"%V\" directive", | |
545 &value[1], &cmd->name); | |
546 return NGX_CONF_ERROR; | |
547 } | |
548 | |
549 kcf->max_cached = n; | |
550 | |
7338
46174066b75f
Upstream keepalive: comment added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7165
diff
changeset
|
551 /* init upstream handler */ |
46174066b75f
Upstream keepalive: comment added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7165
diff
changeset
|
552 |
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
553 uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
554 |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
555 kcf->original_init_upstream = uscf->peer.init_upstream |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
556 ? uscf->peer.init_upstream |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
557 : ngx_http_upstream_init_round_robin; |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
558 |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
559 uscf->peer.init_upstream = ngx_http_upstream_init_keepalive; |
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
560 |
4127 | 561 return NGX_CONF_OK; |
562 } |