Mercurial > hg > nginx
annotate src/http/modules/ngx_http_upstream_keepalive_module.c @ 7340:70c6b08973a0
Upstream keepalive: keepalive_requests directive.
The directive configures maximum number of requests allowed on
a connection kept in the cache. Once a connection reaches the number
of requests configured, it is no longer saved to the cache.
The default is 100.
Much like keepalive_requests for client connections, this is mostly
a safeguard to make sure connections are closed periodically and the
memory allocated from the connection pool is freed.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Fri, 10 Aug 2018 21:54:46 +0300 |
| parents | d9029e113a05 |
| children | 3939483cd1b5 |
| rev | line source |
|---|---|
| 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->log = pc->log; |
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279 c->read->log = pc->log; |
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280 c->write->log = pc->log; |
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281 c->pool->log = pc->log; |
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282 |
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283 if (c->read->timer_set) { |
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284 ngx_del_timer(c->read); |
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285 } |
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286 |
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287 pc->connection = c; |
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288 pc->cached = 1; |
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289 |
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|
290 return NGX_DONE; |
| 4127 | 291 } |
| 292 | |
| 293 | |
| 294 static void | |
| 295 ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, void *data, | |
| 296 ngx_uint_t state) | |
| 297 { | |
| 298 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
| 299 ngx_http_upstream_keepalive_cache_t *item; | |
| 300 | |
| 301 ngx_queue_t *q; | |
| 302 ngx_connection_t *c; | |
| 303 ngx_http_upstream_t *u; | |
| 304 | |
| 305 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
| 306 "free keepalive peer"); | |
| 307 | |
| 308 /* cache valid connections */ | |
| 309 | |
| 310 u = kp->upstream; | |
| 311 c = pc->connection; | |
| 312 | |
|
5133
089a662c17d1
Upstream: removed double-free workarounds in peer.free() methods.
Ruslan Ermilov <ru@nginx.com>
parents:
4998
diff
changeset
|
313 if (state & NGX_PEER_FAILED |
| 4127 | 314 || c == NULL |
| 315 || c->read->eof | |
| 316 || c->read->error | |
| 317 || c->read->timedout | |
| 318 || c->write->error | |
| 319 || c->write->timedout) | |
| 320 { | |
| 321 goto invalid; | |
| 322 } | |
| 323 | |
|
7340
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
324 if (c->requests >= kp->conf->requests) { |
|
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
325 goto invalid; |
|
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
326 } |
|
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
327 |
| 4127 | 328 if (!u->keepalive) { |
| 329 goto invalid; | |
| 330 } | |
| 331 | |
|
6332
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
332 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
|
333 goto invalid; |
|
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
334 } |
|
78b4e10b4367
Upstream: don't keep connections on early responses (ticket #669).
Maxim Dounin <mdounin@mdounin.ru>
parents:
6220
diff
changeset
|
335 |
|
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
336 if (ngx_terminate || ngx_exiting) { |
|
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
337 goto invalid; |
|
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
338 } |
|
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6167
diff
changeset
|
339 |
| 4127 | 340 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
| 341 goto invalid; | |
| 342 } | |
| 343 | |
| 344 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
| 345 "free keepalive peer: saving connection %p", c); | |
| 346 | |
| 347 if (ngx_queue_empty(&kp->conf->free)) { | |
| 348 | |
| 349 q = ngx_queue_last(&kp->conf->cache); | |
| 350 ngx_queue_remove(q); | |
| 351 | |
| 352 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); | |
| 353 | |
| 354 ngx_http_upstream_keepalive_close(item->connection); | |
| 355 | |
| 356 } else { | |
| 357 q = ngx_queue_head(&kp->conf->free); | |
| 358 ngx_queue_remove(q); | |
| 359 | |
| 360 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); | |
| 361 } | |
| 362 | |
|
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
363 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
|
364 |
| 4127 | 365 item->connection = c; |
| 366 | |
| 367 pc->connection = NULL; | |
| 368 | |
|
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
369 c->read->delayed = 0; |
|
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
370 ngx_add_timer(c->read, kp->conf->timeout); |
|
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
371 |
| 4127 | 372 if (c->write->timer_set) { |
| 373 ngx_del_timer(c->write); | |
| 374 } | |
| 375 | |
| 376 c->write->handler = ngx_http_upstream_keepalive_dummy_handler; | |
| 377 c->read->handler = ngx_http_upstream_keepalive_close_handler; | |
| 378 | |
| 379 c->data = item; | |
| 380 c->idle = 1; | |
| 381 c->log = ngx_cycle->log; | |
| 382 c->read->log = ngx_cycle->log; | |
| 383 c->write->log = ngx_cycle->log; | |
| 384 c->pool->log = ngx_cycle->log; | |
| 385 | |
| 386 item->socklen = pc->socklen; | |
| 387 ngx_memcpy(&item->sockaddr, pc->sockaddr, pc->socklen); | |
| 388 | |
| 389 if (c->read->ready) { | |
| 390 ngx_http_upstream_keepalive_close_handler(c->read); | |
| 391 } | |
| 392 | |
| 393 invalid: | |
| 394 | |
| 395 kp->original_free_peer(pc, kp->data, state); | |
| 396 } | |
| 397 | |
| 398 | |
| 399 static void | |
| 400 ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev) | |
| 401 { | |
| 402 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, | |
| 403 "keepalive dummy handler"); | |
| 404 } | |
| 405 | |
| 406 | |
| 407 static void | |
| 408 ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev) | |
| 409 { | |
| 410 ngx_http_upstream_keepalive_srv_conf_t *conf; | |
| 411 ngx_http_upstream_keepalive_cache_t *item; | |
| 412 | |
| 413 int n; | |
| 414 char buf[1]; | |
| 415 ngx_connection_t *c; | |
| 416 | |
| 417 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, | |
| 418 "keepalive close handler"); | |
| 419 | |
| 420 c = ev->data; | |
| 421 | |
|
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
422 if (c->close || c->read->timedout) { |
| 4127 | 423 goto close; |
| 424 } | |
| 425 | |
| 426 n = recv(c->fd, buf, 1, MSG_PEEK); | |
| 427 | |
| 428 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
|
429 ev->ready = 0; |
| 4127 | 430 |
| 431 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { | |
| 432 goto close; | |
| 433 } | |
| 434 | |
| 435 return; | |
| 436 } | |
| 437 | |
| 438 close: | |
| 439 | |
| 440 item = c->data; | |
| 441 conf = item->conf; | |
| 442 | |
| 443 ngx_http_upstream_keepalive_close(c); | |
| 444 | |
| 445 ngx_queue_remove(&item->queue); | |
| 446 ngx_queue_insert_head(&conf->free, &item->queue); | |
| 447 } | |
| 448 | |
| 449 | |
| 450 static void | |
| 451 ngx_http_upstream_keepalive_close(ngx_connection_t *c) | |
| 452 { | |
| 453 | |
| 454 #if (NGX_HTTP_SSL) | |
| 455 | |
| 456 if (c->ssl) { | |
| 457 c->ssl->no_wait_shutdown = 1; | |
| 458 c->ssl->no_send_shutdown = 1; | |
| 459 | |
| 460 if (ngx_ssl_shutdown(c) == NGX_AGAIN) { | |
| 461 c->ssl->handler = ngx_http_upstream_keepalive_close; | |
| 462 return; | |
| 463 } | |
| 464 } | |
| 465 | |
| 466 #endif | |
| 467 | |
| 468 ngx_destroy_pool(c->pool); | |
| 469 ngx_close_connection(c); | |
| 470 } | |
| 471 | |
| 472 | |
| 473 #if (NGX_HTTP_SSL) | |
| 474 | |
| 475 static ngx_int_t | |
| 476 ngx_http_upstream_keepalive_set_session(ngx_peer_connection_t *pc, void *data) | |
| 477 { | |
| 478 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
| 479 | |
| 480 return kp->original_set_session(pc, kp->data); | |
| 481 } | |
| 482 | |
| 483 | |
| 484 static void | |
| 485 ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, void *data) | |
| 486 { | |
| 487 ngx_http_upstream_keepalive_peer_data_t *kp = data; | |
| 488 | |
| 489 kp->original_save_session(pc, kp->data); | |
| 490 return; | |
| 491 } | |
| 492 | |
| 493 #endif | |
| 494 | |
| 495 | |
| 496 static void * | |
| 497 ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf) | |
| 498 { | |
| 499 ngx_http_upstream_keepalive_srv_conf_t *conf; | |
| 500 | |
| 501 conf = ngx_pcalloc(cf->pool, | |
| 502 sizeof(ngx_http_upstream_keepalive_srv_conf_t)); | |
| 503 if (conf == NULL) { | |
| 504 return NULL; | |
| 505 } | |
| 506 | |
| 507 /* | |
| 508 * set by ngx_pcalloc(): | |
| 509 * | |
| 510 * conf->original_init_upstream = NULL; | |
| 511 * 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
|
512 * conf->max_cached = 0; |
| 4127 | 513 */ |
| 514 | |
|
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
515 conf->timeout = NGX_CONF_UNSET_MSEC; |
|
7340
70c6b08973a0
Upstream keepalive: keepalive_requests directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7339
diff
changeset
|
516 conf->requests = NGX_CONF_UNSET_UINT; |
|
7339
d9029e113a05
Upstream keepalive: keepalive_timeout directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7338
diff
changeset
|
517 |
| 4127 | 518 return conf; |
| 519 } | |
| 520 | |
| 521 | |
| 522 static char * | |
| 523 ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 524 { | |
| 525 ngx_http_upstream_srv_conf_t *uscf; | |
|
5213
822b82191940
Upstream keepalive: slightly simplified code.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
526 ngx_http_upstream_keepalive_srv_conf_t *kcf = conf; |
| 4127 | 527 |
| 528 ngx_int_t n; | |
| 529 ngx_str_t *value; | |
| 530 | |
|
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
531 if (kcf->max_cached) { |
|
4998
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
532 return "is duplicate"; |
|
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
533 } |
|
82336a9ce26d
Upstream keepalive: detect duplicate "keepalive" directive.
Ruslan Ermilov <ru@nginx.com>
parents:
4694
diff
changeset
|
534 |
| 4127 | 535 /* read options */ |
| 536 | |
| 537 value = cf->args->elts; | |
| 538 | |
| 539 n = ngx_atoi(value[1].data, value[1].len); | |
| 540 | |
| 541 if (n == NGX_ERROR || n == 0) { | |
| 542 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 543 "invalid value \"%V\" in \"%V\" directive", | |
| 544 &value[1], &cmd->name); | |
| 545 return NGX_CONF_ERROR; | |
| 546 } | |
| 547 | |
| 548 kcf->max_cached = n; | |
| 549 | |
|
7338
46174066b75f
Upstream keepalive: comment added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7165
diff
changeset
|
550 /* init upstream handler */ |
|
46174066b75f
Upstream keepalive: comment added.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7165
diff
changeset
|
551 |
|
6167
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
552 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
|
553 |
|
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
554 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
|
555 ? 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 : 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
|
557 |
|
87d48f8793b6
Upstream keepalive: reduced diffs to the plus version of nginx.
Roman Arutyunyan <arut@nginx.com>
parents:
5999
diff
changeset
|
558 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
|
559 |
| 4127 | 560 return NGX_CONF_OK; |
| 561 } |