Mercurial > hg > nginx-quic
comparison src/stream/ngx_stream_upstream_round_robin.c @ 6115:61d7ae76647d
Stream: port from NGINX+.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Mon, 20 Apr 2015 13:05:11 +0300 |
parents | |
children | cca856715722 |
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6114:4a640716f4e2 | 6115:61d7ae76647d |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_stream.h> | |
11 | |
12 | |
13 #define ngx_stream_upstream_tries(p) ((p)->number \ | |
14 + ((p)->next ? (p)->next->number : 0)) | |
15 | |
16 | |
17 static ngx_stream_upstream_rr_peer_t *ngx_stream_upstream_get_peer( | |
18 ngx_stream_upstream_rr_peer_data_t *rrp); | |
19 | |
20 #if (NGX_STREAM_SSL) | |
21 | |
22 static ngx_int_t ngx_stream_upstream_set_round_robin_peer_session( | |
23 ngx_peer_connection_t *pc, void *data); | |
24 static void ngx_stream_upstream_save_round_robin_peer_session( | |
25 ngx_peer_connection_t *pc, void *data); | |
26 | |
27 #endif | |
28 | |
29 | |
30 ngx_int_t | |
31 ngx_stream_upstream_init_round_robin(ngx_conf_t *cf, | |
32 ngx_stream_upstream_srv_conf_t *us) | |
33 { | |
34 ngx_url_t u; | |
35 ngx_uint_t i, j, n, w; | |
36 ngx_stream_upstream_server_t *server; | |
37 ngx_stream_upstream_rr_peer_t *peer, **peerp; | |
38 ngx_stream_upstream_rr_peers_t *peers, *backup; | |
39 | |
40 us->peer.init = ngx_stream_upstream_init_round_robin_peer; | |
41 | |
42 if (us->servers) { | |
43 server = us->servers->elts; | |
44 | |
45 n = 0; | |
46 w = 0; | |
47 | |
48 for (i = 0; i < us->servers->nelts; i++) { | |
49 if (server[i].backup) { | |
50 continue; | |
51 } | |
52 | |
53 n += server[i].naddrs; | |
54 w += server[i].naddrs * server[i].weight; | |
55 } | |
56 | |
57 if (n == 0) { | |
58 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
59 "no servers in upstream \"%V\" in %s:%ui", | |
60 &us->host, us->file_name, us->line); | |
61 return NGX_ERROR; | |
62 } | |
63 | |
64 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
65 if (peers == NULL) { | |
66 return NGX_ERROR; | |
67 } | |
68 | |
69 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
70 if (peer == NULL) { | |
71 return NGX_ERROR; | |
72 } | |
73 | |
74 peers->single = (n == 1); | |
75 peers->number = n; | |
76 peers->weighted = (w != n); | |
77 peers->total_weight = w; | |
78 peers->name = &us->host; | |
79 | |
80 n = 0; | |
81 peerp = &peers->peer; | |
82 | |
83 for (i = 0; i < us->servers->nelts; i++) { | |
84 if (server[i].backup) { | |
85 continue; | |
86 } | |
87 | |
88 for (j = 0; j < server[i].naddrs; j++) { | |
89 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
90 peer[n].socklen = server[i].addrs[j].socklen; | |
91 peer[n].name = server[i].addrs[j].name; | |
92 peer[n].weight = server[i].weight; | |
93 peer[n].effective_weight = server[i].weight; | |
94 peer[n].current_weight = 0; | |
95 peer[n].max_fails = server[i].max_fails; | |
96 peer[n].fail_timeout = server[i].fail_timeout; | |
97 peer[n].down = server[i].down; | |
98 peer[n].server = server[i].name; | |
99 | |
100 *peerp = &peer[n]; | |
101 peerp = &peer[n].next; | |
102 n++; | |
103 } | |
104 } | |
105 | |
106 us->peer.data = peers; | |
107 | |
108 /* backup servers */ | |
109 | |
110 n = 0; | |
111 w = 0; | |
112 | |
113 for (i = 0; i < us->servers->nelts; i++) { | |
114 if (!server[i].backup) { | |
115 continue; | |
116 } | |
117 | |
118 n += server[i].naddrs; | |
119 w += server[i].naddrs * server[i].weight; | |
120 } | |
121 | |
122 if (n == 0) { | |
123 return NGX_OK; | |
124 } | |
125 | |
126 backup = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
127 if (backup == NULL) { | |
128 return NGX_ERROR; | |
129 } | |
130 | |
131 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
132 if (peer == NULL) { | |
133 return NGX_ERROR; | |
134 } | |
135 | |
136 peers->single = 0; | |
137 backup->single = 0; | |
138 backup->number = n; | |
139 backup->weighted = (w != n); | |
140 backup->total_weight = w; | |
141 backup->name = &us->host; | |
142 | |
143 n = 0; | |
144 peerp = &backup->peer; | |
145 | |
146 for (i = 0; i < us->servers->nelts; i++) { | |
147 if (!server[i].backup) { | |
148 continue; | |
149 } | |
150 | |
151 for (j = 0; j < server[i].naddrs; j++) { | |
152 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
153 peer[n].socklen = server[i].addrs[j].socklen; | |
154 peer[n].name = server[i].addrs[j].name; | |
155 peer[n].weight = server[i].weight; | |
156 peer[n].effective_weight = server[i].weight; | |
157 peer[n].current_weight = 0; | |
158 peer[n].max_fails = server[i].max_fails; | |
159 peer[n].fail_timeout = server[i].fail_timeout; | |
160 peer[n].down = server[i].down; | |
161 peer[n].server = server[i].name; | |
162 | |
163 *peerp = &peer[n]; | |
164 peerp = &peer[n].next; | |
165 n++; | |
166 } | |
167 } | |
168 | |
169 peers->next = backup; | |
170 | |
171 return NGX_OK; | |
172 } | |
173 | |
174 | |
175 /* an upstream implicitly defined by proxy_pass, etc. */ | |
176 | |
177 if (us->port == 0) { | |
178 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
179 "no port in upstream \"%V\" in %s:%ui", | |
180 &us->host, us->file_name, us->line); | |
181 return NGX_ERROR; | |
182 } | |
183 | |
184 ngx_memzero(&u, sizeof(ngx_url_t)); | |
185 | |
186 u.host = us->host; | |
187 u.port = us->port; | |
188 | |
189 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { | |
190 if (u.err) { | |
191 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
192 "%s in upstream \"%V\" in %s:%ui", | |
193 u.err, &us->host, us->file_name, us->line); | |
194 } | |
195 | |
196 return NGX_ERROR; | |
197 } | |
198 | |
199 n = u.naddrs; | |
200 | |
201 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
202 if (peers == NULL) { | |
203 return NGX_ERROR; | |
204 } | |
205 | |
206 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
207 if (peer == NULL) { | |
208 return NGX_ERROR; | |
209 } | |
210 | |
211 peers->single = (n == 1); | |
212 peers->number = n; | |
213 peers->weighted = 0; | |
214 peers->total_weight = n; | |
215 peers->name = &us->host; | |
216 | |
217 peerp = &peers->peer; | |
218 | |
219 for (i = 0; i < u.naddrs; i++) { | |
220 peer[i].sockaddr = u.addrs[i].sockaddr; | |
221 peer[i].socklen = u.addrs[i].socklen; | |
222 peer[i].name = u.addrs[i].name; | |
223 peer[i].weight = 1; | |
224 peer[i].effective_weight = 1; | |
225 peer[i].current_weight = 0; | |
226 peer[i].max_fails = 1; | |
227 peer[i].fail_timeout = 10; | |
228 *peerp = &peer[i]; | |
229 peerp = &peer[i].next; | |
230 } | |
231 | |
232 us->peer.data = peers; | |
233 | |
234 /* implicitly defined upstream has no backup servers */ | |
235 | |
236 return NGX_OK; | |
237 } | |
238 | |
239 | |
240 ngx_int_t | |
241 ngx_stream_upstream_init_round_robin_peer(ngx_stream_session_t *s, | |
242 ngx_stream_upstream_srv_conf_t *us) | |
243 { | |
244 ngx_uint_t n; | |
245 ngx_stream_upstream_rr_peer_data_t *rrp; | |
246 | |
247 rrp = s->upstream->peer.data; | |
248 | |
249 if (rrp == NULL) { | |
250 rrp = ngx_palloc(s->connection->pool, | |
251 sizeof(ngx_stream_upstream_rr_peer_data_t)); | |
252 if (rrp == NULL) { | |
253 return NGX_ERROR; | |
254 } | |
255 | |
256 s->upstream->peer.data = rrp; | |
257 } | |
258 | |
259 rrp->peers = us->peer.data; | |
260 rrp->current = NULL; | |
261 | |
262 n = rrp->peers->number; | |
263 | |
264 if (rrp->peers->next && rrp->peers->next->number > n) { | |
265 n = rrp->peers->next->number; | |
266 } | |
267 | |
268 if (n <= 8 * sizeof(uintptr_t)) { | |
269 rrp->tried = &rrp->data; | |
270 rrp->data = 0; | |
271 | |
272 } else { | |
273 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t)); | |
274 | |
275 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); | |
276 if (rrp->tried == NULL) { | |
277 return NGX_ERROR; | |
278 } | |
279 } | |
280 | |
281 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; | |
282 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; | |
283 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); | |
284 #if (NGX_STREAM_SSL) | |
285 s->upstream->peer.set_session = | |
286 ngx_stream_upstream_set_round_robin_peer_session; | |
287 s->upstream->peer.save_session = | |
288 ngx_stream_upstream_save_round_robin_peer_session; | |
289 #endif | |
290 | |
291 return NGX_OK; | |
292 } | |
293 | |
294 | |
295 ngx_int_t | |
296 ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) | |
297 { | |
298 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
299 | |
300 ngx_int_t rc; | |
301 ngx_uint_t i, n; | |
302 ngx_stream_upstream_rr_peer_t *peer; | |
303 ngx_stream_upstream_rr_peers_t *peers; | |
304 | |
305 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
306 "get rr peer, try: %ui", pc->tries); | |
307 | |
308 pc->connection = NULL; | |
309 | |
310 peers = rrp->peers; | |
311 ngx_stream_upstream_rr_peers_wlock(peers); | |
312 | |
313 if (peers->single) { | |
314 peer = peers->peer; | |
315 | |
316 if (peer->down) { | |
317 goto failed; | |
318 } | |
319 | |
320 rrp->current = peer; | |
321 | |
322 } else { | |
323 | |
324 /* there are several peers */ | |
325 | |
326 peer = ngx_stream_upstream_get_peer(rrp); | |
327 | |
328 if (peer == NULL) { | |
329 goto failed; | |
330 } | |
331 | |
332 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
333 "get rr peer, current: %p %i", | |
334 peer, peer->current_weight); | |
335 } | |
336 | |
337 pc->sockaddr = peer->sockaddr; | |
338 pc->socklen = peer->socklen; | |
339 pc->name = &peer->name; | |
340 | |
341 peer->conns++; | |
342 | |
343 ngx_stream_upstream_rr_peers_unlock(peers); | |
344 | |
345 return NGX_OK; | |
346 | |
347 failed: | |
348 | |
349 if (peers->next) { | |
350 | |
351 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, pc->log, 0, "backup servers"); | |
352 | |
353 rrp->peers = peers->next; | |
354 | |
355 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
356 / (8 * sizeof(uintptr_t)); | |
357 | |
358 for (i = 0; i < n; i++) { | |
359 rrp->tried[i] = 0; | |
360 } | |
361 | |
362 ngx_stream_upstream_rr_peers_unlock(peers); | |
363 | |
364 rc = ngx_stream_upstream_get_round_robin_peer(pc, rrp); | |
365 | |
366 if (rc != NGX_BUSY) { | |
367 return rc; | |
368 } | |
369 | |
370 ngx_stream_upstream_rr_peers_wlock(peers); | |
371 } | |
372 | |
373 /* all peers failed, mark them as live for quick recovery */ | |
374 | |
375 for (peer = peers->peer; peer; peer = peer->next) { | |
376 peer->fails = 0; | |
377 } | |
378 | |
379 ngx_stream_upstream_rr_peers_unlock(peers); | |
380 | |
381 pc->name = peers->name; | |
382 | |
383 return NGX_BUSY; | |
384 } | |
385 | |
386 | |
387 static ngx_stream_upstream_rr_peer_t * | |
388 ngx_stream_upstream_get_peer(ngx_stream_upstream_rr_peer_data_t *rrp) | |
389 { | |
390 time_t now; | |
391 uintptr_t m; | |
392 ngx_int_t total; | |
393 ngx_uint_t i, n, p; | |
394 ngx_stream_upstream_rr_peer_t *peer, *best; | |
395 | |
396 now = ngx_time(); | |
397 | |
398 best = NULL; | |
399 total = 0; | |
400 | |
401 #if (NGX_SUPPRESS_WARN) | |
402 p = 0; | |
403 #endif | |
404 | |
405 for (peer = rrp->peers->peer, i = 0; | |
406 peer; | |
407 peer = peer->next, i++) | |
408 { | |
409 | |
410 n = i / (8 * sizeof(uintptr_t)); | |
411 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); | |
412 | |
413 if (rrp->tried[n] & m) { | |
414 continue; | |
415 } | |
416 | |
417 if (peer->down) { | |
418 continue; | |
419 } | |
420 | |
421 if (peer->max_fails | |
422 && peer->fails >= peer->max_fails | |
423 && now - peer->checked <= peer->fail_timeout) | |
424 { | |
425 continue; | |
426 } | |
427 | |
428 peer->current_weight += peer->effective_weight; | |
429 total += peer->effective_weight; | |
430 | |
431 if (peer->effective_weight < peer->weight) { | |
432 peer->effective_weight++; | |
433 } | |
434 | |
435 if (best == NULL || peer->current_weight > best->current_weight) { | |
436 best = peer; | |
437 p = i; | |
438 } | |
439 } | |
440 | |
441 if (best == NULL) { | |
442 return NULL; | |
443 } | |
444 | |
445 rrp->current = best; | |
446 | |
447 n = p / (8 * sizeof(uintptr_t)); | |
448 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); | |
449 | |
450 rrp->tried[n] |= m; | |
451 | |
452 best->current_weight -= total; | |
453 | |
454 if (now - best->checked > best->fail_timeout) { | |
455 best->checked = now; | |
456 } | |
457 | |
458 return best; | |
459 } | |
460 | |
461 | |
462 void | |
463 ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
464 ngx_uint_t state) | |
465 { | |
466 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
467 | |
468 time_t now; | |
469 ngx_stream_upstream_rr_peer_t *peer; | |
470 | |
471 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
472 "free rr peer %ui %ui", pc->tries, state); | |
473 | |
474 peer = rrp->current; | |
475 | |
476 ngx_stream_upstream_rr_peers_rlock(rrp->peers); | |
477 ngx_stream_upstream_rr_peer_lock(rrp->peers, peer); | |
478 | |
479 if (rrp->peers->single) { | |
480 peer->conns--; | |
481 | |
482 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
483 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
484 | |
485 pc->tries = 0; | |
486 return; | |
487 } | |
488 | |
489 if (state & NGX_PEER_FAILED) { | |
490 now = ngx_time(); | |
491 | |
492 peer->fails++; | |
493 peer->accessed = now; | |
494 peer->checked = now; | |
495 | |
496 if (peer->max_fails) { | |
497 peer->effective_weight -= peer->weight / peer->max_fails; | |
498 } | |
499 | |
500 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
501 "free rr peer failed: %p %i", | |
502 peer, peer->effective_weight); | |
503 | |
504 if (peer->effective_weight < 0) { | |
505 peer->effective_weight = 0; | |
506 } | |
507 | |
508 } else { | |
509 | |
510 /* mark peer live if check passed */ | |
511 | |
512 if (peer->accessed < peer->checked) { | |
513 peer->fails = 0; | |
514 } | |
515 } | |
516 | |
517 peer->conns--; | |
518 | |
519 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
520 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
521 | |
522 if (pc->tries) { | |
523 pc->tries--; | |
524 } | |
525 } | |
526 | |
527 | |
528 #if (NGX_STREAM_SSL) | |
529 | |
530 static ngx_int_t | |
531 ngx_stream_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, | |
532 void *data) | |
533 { | |
534 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
535 | |
536 ngx_int_t rc; | |
537 ngx_ssl_session_t *ssl_session; | |
538 ngx_stream_upstream_rr_peer_t *peer; | |
539 #if (NGX_STREAM_UPSTREAM_ZONE) | |
540 int len; | |
541 #if OPENSSL_VERSION_NUMBER >= 0x0090707fL | |
542 const | |
543 #endif | |
544 u_char *p; | |
545 ngx_stream_upstream_rr_peers_t *peers; | |
546 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
547 #endif | |
548 | |
549 peer = rrp->current; | |
550 | |
551 #if (NGX_STREAM_UPSTREAM_ZONE) | |
552 peers = rrp->peers; | |
553 | |
554 if (peers->shpool) { | |
555 ngx_stream_upstream_rr_peers_rlock(peers); | |
556 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
557 | |
558 if (peer->ssl_session == NULL) { | |
559 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
560 ngx_stream_upstream_rr_peers_unlock(peers); | |
561 return NGX_OK; | |
562 } | |
563 | |
564 len = peer->ssl_session_len; | |
565 | |
566 ngx_memcpy(buf, peer->ssl_session, len); | |
567 | |
568 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
569 ngx_stream_upstream_rr_peers_unlock(peers); | |
570 | |
571 p = buf; | |
572 ssl_session = d2i_SSL_SESSION(NULL, &p, len); | |
573 | |
574 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
575 | |
576 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
577 "set session: %p", ssl_session); | |
578 | |
579 ngx_ssl_free_session(ssl_session); | |
580 | |
581 return rc; | |
582 } | |
583 #endif | |
584 | |
585 ssl_session = peer->ssl_session; | |
586 | |
587 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
588 | |
589 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
590 "set session: %p", ssl_session); | |
591 | |
592 return rc; | |
593 } | |
594 | |
595 | |
596 static void | |
597 ngx_stream_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, | |
598 void *data) | |
599 { | |
600 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
601 | |
602 ngx_ssl_session_t *old_ssl_session, *ssl_session; | |
603 ngx_stream_upstream_rr_peer_t *peer; | |
604 #if (NGX_STREAM_UPSTREAM_ZONE) | |
605 int len; | |
606 u_char *p; | |
607 ngx_stream_upstream_rr_peers_t *peers; | |
608 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
609 #endif | |
610 | |
611 #if (NGX_STREAM_UPSTREAM_ZONE) | |
612 peers = rrp->peers; | |
613 | |
614 if (peers->shpool) { | |
615 | |
616 ssl_session = SSL_get0_session(pc->connection->ssl->connection); | |
617 | |
618 if (ssl_session == NULL) { | |
619 return; | |
620 } | |
621 | |
622 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
623 "save session: %p", ssl_session); | |
624 | |
625 len = i2d_SSL_SESSION(ssl_session, NULL); | |
626 | |
627 /* do not cache too big session */ | |
628 | |
629 if (len > NGX_SSL_MAX_SESSION_SIZE) { | |
630 return; | |
631 } | |
632 | |
633 p = buf; | |
634 (void) i2d_SSL_SESSION(ssl_session, &p); | |
635 | |
636 peer = rrp->current; | |
637 | |
638 ngx_stream_upstream_rr_peers_rlock(peers); | |
639 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
640 | |
641 if (len > peer->ssl_session_len) { | |
642 ngx_shmtx_lock(&peers->shpool->mutex); | |
643 | |
644 if (peer->ssl_session) { | |
645 ngx_slab_free_locked(peers->shpool, peer->ssl_session); | |
646 } | |
647 | |
648 peer->ssl_session = ngx_slab_alloc_locked(peers->shpool, len); | |
649 | |
650 ngx_shmtx_unlock(&peers->shpool->mutex); | |
651 | |
652 if (peer->ssl_session == NULL) { | |
653 peer->ssl_session_len = 0; | |
654 | |
655 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
656 ngx_stream_upstream_rr_peers_unlock(peers); | |
657 return; | |
658 } | |
659 | |
660 peer->ssl_session_len = len; | |
661 } | |
662 | |
663 ngx_memcpy(peer->ssl_session, buf, len); | |
664 | |
665 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
666 ngx_stream_upstream_rr_peers_unlock(peers); | |
667 | |
668 return; | |
669 } | |
670 #endif | |
671 | |
672 ssl_session = ngx_ssl_get_session(pc->connection); | |
673 | |
674 if (ssl_session == NULL) { | |
675 return; | |
676 } | |
677 | |
678 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
679 "save session: %p", ssl_session); | |
680 | |
681 peer = rrp->current; | |
682 | |
683 old_ssl_session = peer->ssl_session; | |
684 peer->ssl_session = ssl_session; | |
685 | |
686 if (old_ssl_session) { | |
687 | |
688 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
689 "old session: %p", old_ssl_session); | |
690 | |
691 /* TODO: may block */ | |
692 | |
693 ngx_ssl_free_session(old_ssl_session); | |
694 } | |
695 } | |
696 | |
697 #endif |