Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_round_robin.c @ 8606:062080651d50 quic
Changed the OpenSSL QUIC support detection.
As was changed in 253cf267f95a.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 09 Sep 2021 15:34:00 +0300 |
parents | 90cc7194e993 |
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rev | line source |
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6115 | 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 | |
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13 #define ngx_stream_upstream_tries(p) ((p)->tries \ |
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14 + ((p)->next ? (p)->next->tries : 0)) |
6115 | 15 |
16 | |
17 static ngx_stream_upstream_rr_peer_t *ngx_stream_upstream_get_peer( | |
18 ngx_stream_upstream_rr_peer_data_t *rrp); | |
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19 static void ngx_stream_upstream_notify_round_robin_peer( |
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20 ngx_peer_connection_t *pc, void *data, ngx_uint_t state); |
6115 | 21 |
22 #if (NGX_STREAM_SSL) | |
23 | |
24 static ngx_int_t ngx_stream_upstream_set_round_robin_peer_session( | |
25 ngx_peer_connection_t *pc, void *data); | |
26 static void ngx_stream_upstream_save_round_robin_peer_session( | |
27 ngx_peer_connection_t *pc, void *data); | |
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28 static ngx_int_t ngx_stream_upstream_empty_set_session( |
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29 ngx_peer_connection_t *pc, void *data); |
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30 static void ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, |
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31 void *data); |
6115 | 32 |
33 #endif | |
34 | |
35 | |
36 ngx_int_t | |
37 ngx_stream_upstream_init_round_robin(ngx_conf_t *cf, | |
38 ngx_stream_upstream_srv_conf_t *us) | |
39 { | |
40 ngx_url_t u; | |
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41 ngx_uint_t i, j, n, w, t; |
6115 | 42 ngx_stream_upstream_server_t *server; |
43 ngx_stream_upstream_rr_peer_t *peer, **peerp; | |
44 ngx_stream_upstream_rr_peers_t *peers, *backup; | |
45 | |
46 us->peer.init = ngx_stream_upstream_init_round_robin_peer; | |
47 | |
48 if (us->servers) { | |
49 server = us->servers->elts; | |
50 | |
51 n = 0; | |
52 w = 0; | |
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53 t = 0; |
6115 | 54 |
55 for (i = 0; i < us->servers->nelts; i++) { | |
56 if (server[i].backup) { | |
57 continue; | |
58 } | |
59 | |
60 n += server[i].naddrs; | |
61 w += server[i].naddrs * server[i].weight; | |
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62 |
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63 if (!server[i].down) { |
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64 t += server[i].naddrs; |
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65 } |
6115 | 66 } |
67 | |
68 if (n == 0) { | |
69 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
70 "no servers in upstream \"%V\" in %s:%ui", | |
71 &us->host, us->file_name, us->line); | |
72 return NGX_ERROR; | |
73 } | |
74 | |
75 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
76 if (peers == NULL) { | |
77 return NGX_ERROR; | |
78 } | |
79 | |
80 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
81 if (peer == NULL) { | |
82 return NGX_ERROR; | |
83 } | |
84 | |
85 peers->single = (n == 1); | |
86 peers->number = n; | |
87 peers->weighted = (w != n); | |
88 peers->total_weight = w; | |
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89 peers->tries = t; |
6115 | 90 peers->name = &us->host; |
91 | |
92 n = 0; | |
93 peerp = &peers->peer; | |
94 | |
95 for (i = 0; i < us->servers->nelts; i++) { | |
96 if (server[i].backup) { | |
97 continue; | |
98 } | |
99 | |
100 for (j = 0; j < server[i].naddrs; j++) { | |
101 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
102 peer[n].socklen = server[i].addrs[j].socklen; | |
103 peer[n].name = server[i].addrs[j].name; | |
104 peer[n].weight = server[i].weight; | |
105 peer[n].effective_weight = server[i].weight; | |
106 peer[n].current_weight = 0; | |
6705 | 107 peer[n].max_conns = server[i].max_conns; |
6115 | 108 peer[n].max_fails = server[i].max_fails; |
109 peer[n].fail_timeout = server[i].fail_timeout; | |
110 peer[n].down = server[i].down; | |
111 peer[n].server = server[i].name; | |
112 | |
113 *peerp = &peer[n]; | |
114 peerp = &peer[n].next; | |
115 n++; | |
116 } | |
117 } | |
118 | |
119 us->peer.data = peers; | |
120 | |
121 /* backup servers */ | |
122 | |
123 n = 0; | |
124 w = 0; | |
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125 t = 0; |
6115 | 126 |
127 for (i = 0; i < us->servers->nelts; i++) { | |
128 if (!server[i].backup) { | |
129 continue; | |
130 } | |
131 | |
132 n += server[i].naddrs; | |
133 w += server[i].naddrs * server[i].weight; | |
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134 |
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135 if (!server[i].down) { |
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136 t += server[i].naddrs; |
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137 } |
6115 | 138 } |
139 | |
140 if (n == 0) { | |
141 return NGX_OK; | |
142 } | |
143 | |
144 backup = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
145 if (backup == NULL) { | |
146 return NGX_ERROR; | |
147 } | |
148 | |
149 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
150 if (peer == NULL) { | |
151 return NGX_ERROR; | |
152 } | |
153 | |
154 peers->single = 0; | |
155 backup->single = 0; | |
156 backup->number = n; | |
157 backup->weighted = (w != n); | |
158 backup->total_weight = w; | |
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159 backup->tries = t; |
6115 | 160 backup->name = &us->host; |
161 | |
162 n = 0; | |
163 peerp = &backup->peer; | |
164 | |
165 for (i = 0; i < us->servers->nelts; i++) { | |
166 if (!server[i].backup) { | |
167 continue; | |
168 } | |
169 | |
170 for (j = 0; j < server[i].naddrs; j++) { | |
171 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
172 peer[n].socklen = server[i].addrs[j].socklen; | |
173 peer[n].name = server[i].addrs[j].name; | |
174 peer[n].weight = server[i].weight; | |
175 peer[n].effective_weight = server[i].weight; | |
176 peer[n].current_weight = 0; | |
6705 | 177 peer[n].max_conns = server[i].max_conns; |
6115 | 178 peer[n].max_fails = server[i].max_fails; |
179 peer[n].fail_timeout = server[i].fail_timeout; | |
180 peer[n].down = server[i].down; | |
181 peer[n].server = server[i].name; | |
182 | |
183 *peerp = &peer[n]; | |
184 peerp = &peer[n].next; | |
185 n++; | |
186 } | |
187 } | |
188 | |
189 peers->next = backup; | |
190 | |
191 return NGX_OK; | |
192 } | |
193 | |
194 | |
195 /* an upstream implicitly defined by proxy_pass, etc. */ | |
196 | |
197 if (us->port == 0) { | |
198 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
199 "no port in upstream \"%V\" in %s:%ui", | |
200 &us->host, us->file_name, us->line); | |
201 return NGX_ERROR; | |
202 } | |
203 | |
204 ngx_memzero(&u, sizeof(ngx_url_t)); | |
205 | |
206 u.host = us->host; | |
207 u.port = us->port; | |
208 | |
209 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { | |
210 if (u.err) { | |
211 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
212 "%s in upstream \"%V\" in %s:%ui", | |
213 u.err, &us->host, us->file_name, us->line); | |
214 } | |
215 | |
216 return NGX_ERROR; | |
217 } | |
218 | |
219 n = u.naddrs; | |
220 | |
221 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
222 if (peers == NULL) { | |
223 return NGX_ERROR; | |
224 } | |
225 | |
226 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
227 if (peer == NULL) { | |
228 return NGX_ERROR; | |
229 } | |
230 | |
231 peers->single = (n == 1); | |
232 peers->number = n; | |
233 peers->weighted = 0; | |
234 peers->total_weight = n; | |
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235 peers->tries = n; |
6115 | 236 peers->name = &us->host; |
237 | |
238 peerp = &peers->peer; | |
239 | |
240 for (i = 0; i < u.naddrs; i++) { | |
241 peer[i].sockaddr = u.addrs[i].sockaddr; | |
242 peer[i].socklen = u.addrs[i].socklen; | |
243 peer[i].name = u.addrs[i].name; | |
244 peer[i].weight = 1; | |
245 peer[i].effective_weight = 1; | |
246 peer[i].current_weight = 0; | |
6705 | 247 peer[i].max_conns = 0; |
6115 | 248 peer[i].max_fails = 1; |
249 peer[i].fail_timeout = 10; | |
250 *peerp = &peer[i]; | |
251 peerp = &peer[i].next; | |
252 } | |
253 | |
254 us->peer.data = peers; | |
255 | |
256 /* implicitly defined upstream has no backup servers */ | |
257 | |
258 return NGX_OK; | |
259 } | |
260 | |
261 | |
262 ngx_int_t | |
263 ngx_stream_upstream_init_round_robin_peer(ngx_stream_session_t *s, | |
264 ngx_stream_upstream_srv_conf_t *us) | |
265 { | |
266 ngx_uint_t n; | |
267 ngx_stream_upstream_rr_peer_data_t *rrp; | |
268 | |
269 rrp = s->upstream->peer.data; | |
270 | |
271 if (rrp == NULL) { | |
272 rrp = ngx_palloc(s->connection->pool, | |
273 sizeof(ngx_stream_upstream_rr_peer_data_t)); | |
274 if (rrp == NULL) { | |
275 return NGX_ERROR; | |
276 } | |
277 | |
278 s->upstream->peer.data = rrp; | |
279 } | |
280 | |
281 rrp->peers = us->peer.data; | |
282 rrp->current = NULL; | |
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283 rrp->config = 0; |
6115 | 284 |
285 n = rrp->peers->number; | |
286 | |
287 if (rrp->peers->next && rrp->peers->next->number > n) { | |
288 n = rrp->peers->next->number; | |
289 } | |
290 | |
291 if (n <= 8 * sizeof(uintptr_t)) { | |
292 rrp->tried = &rrp->data; | |
293 rrp->data = 0; | |
294 | |
295 } else { | |
296 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t)); | |
297 | |
298 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); | |
299 if (rrp->tried == NULL) { | |
300 return NGX_ERROR; | |
301 } | |
302 } | |
303 | |
304 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; | |
305 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; | |
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306 s->upstream->peer.notify = ngx_stream_upstream_notify_round_robin_peer; |
6115 | 307 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); |
308 #if (NGX_STREAM_SSL) | |
309 s->upstream->peer.set_session = | |
310 ngx_stream_upstream_set_round_robin_peer_session; | |
311 s->upstream->peer.save_session = | |
312 ngx_stream_upstream_save_round_robin_peer_session; | |
313 #endif | |
314 | |
315 return NGX_OK; | |
316 } | |
317 | |
318 | |
319 ngx_int_t | |
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320 ngx_stream_upstream_create_round_robin_peer(ngx_stream_session_t *s, |
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321 ngx_stream_upstream_resolved_t *ur) |
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322 { |
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323 u_char *p; |
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324 size_t len; |
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325 socklen_t socklen; |
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326 ngx_uint_t i, n; |
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327 struct sockaddr *sockaddr; |
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328 ngx_stream_upstream_rr_peer_t *peer, **peerp; |
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329 ngx_stream_upstream_rr_peers_t *peers; |
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330 ngx_stream_upstream_rr_peer_data_t *rrp; |
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331 |
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332 rrp = s->upstream->peer.data; |
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333 |
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334 if (rrp == NULL) { |
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335 rrp = ngx_palloc(s->connection->pool, |
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336 sizeof(ngx_stream_upstream_rr_peer_data_t)); |
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337 if (rrp == NULL) { |
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338 return NGX_ERROR; |
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339 } |
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340 |
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341 s->upstream->peer.data = rrp; |
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342 } |
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343 |
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344 peers = ngx_pcalloc(s->connection->pool, |
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345 sizeof(ngx_stream_upstream_rr_peers_t)); |
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346 if (peers == NULL) { |
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347 return NGX_ERROR; |
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348 } |
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349 |
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350 peer = ngx_pcalloc(s->connection->pool, |
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351 sizeof(ngx_stream_upstream_rr_peer_t) * ur->naddrs); |
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352 if (peer == NULL) { |
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353 return NGX_ERROR; |
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354 } |
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355 |
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356 peers->single = (ur->naddrs == 1); |
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357 peers->number = ur->naddrs; |
8249
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Upstream: excluded down servers from the next_upstream tries.
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358 peers->tries = ur->naddrs; |
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359 peers->name = &ur->host; |
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360 |
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361 if (ur->sockaddr) { |
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362 peer[0].sockaddr = ur->sockaddr; |
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363 peer[0].socklen = ur->socklen; |
6785
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Upstream: added the ngx_http_upstream_resolved_t.name field.
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364 peer[0].name = ur->name; |
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365 peer[0].weight = 1; |
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366 peer[0].effective_weight = 1; |
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367 peer[0].current_weight = 0; |
6706 | 368 peer[0].max_conns = 0; |
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369 peer[0].max_fails = 1; |
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370 peer[0].fail_timeout = 10; |
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371 peers->peer = peer; |
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372 |
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373 } else { |
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374 peerp = &peers->peer; |
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375 |
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376 for (i = 0; i < ur->naddrs; i++) { |
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377 |
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378 socklen = ur->addrs[i].socklen; |
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379 |
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380 sockaddr = ngx_palloc(s->connection->pool, socklen); |
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381 if (sockaddr == NULL) { |
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382 return NGX_ERROR; |
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383 } |
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384 |
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385 ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen); |
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386 ngx_inet_set_port(sockaddr, ur->port); |
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387 |
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388 p = ngx_pnalloc(s->connection->pool, NGX_SOCKADDR_STRLEN); |
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389 if (p == NULL) { |
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390 return NGX_ERROR; |
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391 } |
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|
392 |
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393 len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1); |
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394 |
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395 peer[i].sockaddr = sockaddr; |
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396 peer[i].socklen = socklen; |
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397 peer[i].name.len = len; |
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398 peer[i].name.data = p; |
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399 peer[i].weight = 1; |
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400 peer[i].effective_weight = 1; |
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401 peer[i].current_weight = 0; |
6706 | 402 peer[i].max_conns = 0; |
6643
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403 peer[i].max_fails = 1; |
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404 peer[i].fail_timeout = 10; |
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405 *peerp = &peer[i]; |
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406 peerp = &peer[i].next; |
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407 } |
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408 } |
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409 |
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410 rrp->peers = peers; |
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411 rrp->current = NULL; |
6712
fd5c2781460b
Modules compatibility: upstream config field.
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6706
diff
changeset
|
412 rrp->config = 0; |
6643
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413 |
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414 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) { |
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415 rrp->tried = &rrp->data; |
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416 rrp->data = 0; |
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417 |
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418 } else { |
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419 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) |
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420 / (8 * sizeof(uintptr_t)); |
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|
421 |
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422 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); |
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423 if (rrp->tried == NULL) { |
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424 return NGX_ERROR; |
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425 } |
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426 } |
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427 |
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428 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; |
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429 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; |
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430 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); |
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431 #if (NGX_STREAM_SSL) |
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432 s->upstream->peer.set_session = ngx_stream_upstream_empty_set_session; |
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433 s->upstream->peer.save_session = ngx_stream_upstream_empty_save_session; |
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434 #endif |
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435 |
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436 return NGX_OK; |
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|
437 } |
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|
438 |
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|
439 |
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|
440 ngx_int_t |
6115 | 441 ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) |
442 { | |
443 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
444 | |
445 ngx_int_t rc; | |
446 ngx_uint_t i, n; | |
447 ngx_stream_upstream_rr_peer_t *peer; | |
448 ngx_stream_upstream_rr_peers_t *peers; | |
449 | |
450 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
451 "get rr peer, try: %ui", pc->tries); | |
452 | |
453 pc->connection = NULL; | |
454 | |
455 peers = rrp->peers; | |
456 ngx_stream_upstream_rr_peers_wlock(peers); | |
457 | |
458 if (peers->single) { | |
459 peer = peers->peer; | |
460 | |
461 if (peer->down) { | |
462 goto failed; | |
463 } | |
464 | |
6705 | 465 if (peer->max_conns && peer->conns >= peer->max_conns) { |
466 goto failed; | |
467 } | |
468 | |
6115 | 469 rrp->current = peer; |
470 | |
471 } else { | |
472 | |
473 /* there are several peers */ | |
474 | |
475 peer = ngx_stream_upstream_get_peer(rrp); | |
476 | |
477 if (peer == NULL) { | |
478 goto failed; | |
479 } | |
480 | |
481 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
482 "get rr peer, current: %p %i", | |
483 peer, peer->current_weight); | |
484 } | |
485 | |
486 pc->sockaddr = peer->sockaddr; | |
487 pc->socklen = peer->socklen; | |
488 pc->name = &peer->name; | |
489 | |
490 peer->conns++; | |
491 | |
492 ngx_stream_upstream_rr_peers_unlock(peers); | |
493 | |
494 return NGX_OK; | |
495 | |
496 failed: | |
497 | |
498 if (peers->next) { | |
499 | |
500 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, pc->log, 0, "backup servers"); | |
501 | |
502 rrp->peers = peers->next; | |
503 | |
504 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
505 / (8 * sizeof(uintptr_t)); | |
506 | |
507 for (i = 0; i < n; i++) { | |
6474 | 508 rrp->tried[i] = 0; |
6115 | 509 } |
510 | |
511 ngx_stream_upstream_rr_peers_unlock(peers); | |
512 | |
513 rc = ngx_stream_upstream_get_round_robin_peer(pc, rrp); | |
514 | |
515 if (rc != NGX_BUSY) { | |
516 return rc; | |
517 } | |
518 | |
519 ngx_stream_upstream_rr_peers_wlock(peers); | |
520 } | |
521 | |
522 ngx_stream_upstream_rr_peers_unlock(peers); | |
523 | |
524 pc->name = peers->name; | |
525 | |
526 return NGX_BUSY; | |
527 } | |
528 | |
529 | |
530 static ngx_stream_upstream_rr_peer_t * | |
531 ngx_stream_upstream_get_peer(ngx_stream_upstream_rr_peer_data_t *rrp) | |
532 { | |
533 time_t now; | |
534 uintptr_t m; | |
535 ngx_int_t total; | |
536 ngx_uint_t i, n, p; | |
537 ngx_stream_upstream_rr_peer_t *peer, *best; | |
538 | |
539 now = ngx_time(); | |
540 | |
541 best = NULL; | |
542 total = 0; | |
543 | |
544 #if (NGX_SUPPRESS_WARN) | |
545 p = 0; | |
546 #endif | |
547 | |
548 for (peer = rrp->peers->peer, i = 0; | |
549 peer; | |
550 peer = peer->next, i++) | |
551 { | |
552 n = i / (8 * sizeof(uintptr_t)); | |
553 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); | |
554 | |
555 if (rrp->tried[n] & m) { | |
556 continue; | |
557 } | |
558 | |
559 if (peer->down) { | |
560 continue; | |
561 } | |
562 | |
563 if (peer->max_fails | |
564 && peer->fails >= peer->max_fails | |
565 && now - peer->checked <= peer->fail_timeout) | |
566 { | |
567 continue; | |
568 } | |
569 | |
6705 | 570 if (peer->max_conns && peer->conns >= peer->max_conns) { |
571 continue; | |
572 } | |
573 | |
6115 | 574 peer->current_weight += peer->effective_weight; |
575 total += peer->effective_weight; | |
576 | |
577 if (peer->effective_weight < peer->weight) { | |
578 peer->effective_weight++; | |
579 } | |
580 | |
581 if (best == NULL || peer->current_weight > best->current_weight) { | |
582 best = peer; | |
583 p = i; | |
584 } | |
585 } | |
586 | |
587 if (best == NULL) { | |
588 return NULL; | |
589 } | |
590 | |
591 rrp->current = best; | |
592 | |
593 n = p / (8 * sizeof(uintptr_t)); | |
594 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); | |
595 | |
596 rrp->tried[n] |= m; | |
597 | |
598 best->current_weight -= total; | |
599 | |
600 if (now - best->checked > best->fail_timeout) { | |
601 best->checked = now; | |
602 } | |
603 | |
604 return best; | |
605 } | |
606 | |
607 | |
608 void | |
609 ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
610 ngx_uint_t state) | |
611 { | |
612 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
613 | |
614 time_t now; | |
615 ngx_stream_upstream_rr_peer_t *peer; | |
616 | |
617 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
618 "free rr peer %ui %ui", pc->tries, state); | |
619 | |
620 peer = rrp->current; | |
621 | |
622 ngx_stream_upstream_rr_peers_rlock(rrp->peers); | |
623 ngx_stream_upstream_rr_peer_lock(rrp->peers, peer); | |
624 | |
625 if (rrp->peers->single) { | |
626 peer->conns--; | |
627 | |
628 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
629 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
630 | |
631 pc->tries = 0; | |
632 return; | |
633 } | |
634 | |
635 if (state & NGX_PEER_FAILED) { | |
636 now = ngx_time(); | |
637 | |
638 peer->fails++; | |
639 peer->accessed = now; | |
640 peer->checked = now; | |
641 | |
642 if (peer->max_fails) { | |
643 peer->effective_weight -= peer->weight / peer->max_fails; | |
6154
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644 |
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645 if (peer->fails >= peer->max_fails) { |
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646 ngx_log_error(NGX_LOG_WARN, pc->log, 0, |
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647 "upstream server temporarily disabled"); |
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648 } |
6115 | 649 } |
650 | |
651 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
652 "free rr peer failed: %p %i", | |
653 peer, peer->effective_weight); | |
654 | |
655 if (peer->effective_weight < 0) { | |
656 peer->effective_weight = 0; | |
657 } | |
658 | |
659 } else { | |
660 | |
661 /* mark peer live if check passed */ | |
662 | |
663 if (peer->accessed < peer->checked) { | |
664 peer->fails = 0; | |
665 } | |
666 } | |
667 | |
668 peer->conns--; | |
669 | |
670 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
671 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
672 | |
673 if (pc->tries) { | |
674 pc->tries--; | |
675 } | |
676 } | |
677 | |
678 | |
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679 static void |
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680 ngx_stream_upstream_notify_round_robin_peer(ngx_peer_connection_t *pc, |
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681 void *data, ngx_uint_t type) |
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682 { |
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683 ngx_stream_upstream_rr_peer_data_t *rrp = data; |
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684 |
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685 ngx_stream_upstream_rr_peer_t *peer; |
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686 |
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687 peer = rrp->current; |
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688 |
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689 if (type == NGX_STREAM_UPSTREAM_NOTIFY_CONNECT |
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690 && pc->connection->type == SOCK_STREAM) |
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691 { |
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692 ngx_stream_upstream_rr_peers_rlock(rrp->peers); |
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693 ngx_stream_upstream_rr_peer_lock(rrp->peers, peer); |
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694 |
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695 if (peer->accessed < peer->checked) { |
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696 peer->fails = 0; |
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697 } |
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698 |
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699 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); |
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700 ngx_stream_upstream_rr_peers_unlock(rrp->peers); |
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701 } |
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702 } |
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703 |
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704 |
6115 | 705 #if (NGX_STREAM_SSL) |
706 | |
707 static ngx_int_t | |
708 ngx_stream_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, | |
709 void *data) | |
710 { | |
711 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
712 | |
713 ngx_int_t rc; | |
714 ngx_ssl_session_t *ssl_session; | |
715 ngx_stream_upstream_rr_peer_t *peer; | |
716 #if (NGX_STREAM_UPSTREAM_ZONE) | |
717 int len; | |
7509
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718 const u_char *p; |
6115 | 719 ngx_stream_upstream_rr_peers_t *peers; |
720 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
721 #endif | |
722 | |
723 peer = rrp->current; | |
724 | |
725 #if (NGX_STREAM_UPSTREAM_ZONE) | |
726 peers = rrp->peers; | |
727 | |
728 if (peers->shpool) { | |
729 ngx_stream_upstream_rr_peers_rlock(peers); | |
730 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
731 | |
732 if (peer->ssl_session == NULL) { | |
733 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
734 ngx_stream_upstream_rr_peers_unlock(peers); | |
735 return NGX_OK; | |
736 } | |
737 | |
738 len = peer->ssl_session_len; | |
739 | |
740 ngx_memcpy(buf, peer->ssl_session, len); | |
741 | |
742 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
743 ngx_stream_upstream_rr_peers_unlock(peers); | |
744 | |
745 p = buf; | |
746 ssl_session = d2i_SSL_SESSION(NULL, &p, len); | |
747 | |
748 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
749 | |
750 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
751 "set session: %p", ssl_session); | |
752 | |
753 ngx_ssl_free_session(ssl_session); | |
754 | |
755 return rc; | |
756 } | |
757 #endif | |
758 | |
759 ssl_session = peer->ssl_session; | |
760 | |
761 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
762 | |
763 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
764 "set session: %p", ssl_session); | |
765 | |
766 return rc; | |
767 } | |
768 | |
769 | |
770 static void | |
771 ngx_stream_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, | |
772 void *data) | |
773 { | |
774 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
775 | |
776 ngx_ssl_session_t *old_ssl_session, *ssl_session; | |
777 ngx_stream_upstream_rr_peer_t *peer; | |
778 #if (NGX_STREAM_UPSTREAM_ZONE) | |
779 int len; | |
780 u_char *p; | |
781 ngx_stream_upstream_rr_peers_t *peers; | |
782 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
783 #endif | |
784 | |
785 #if (NGX_STREAM_UPSTREAM_ZONE) | |
786 peers = rrp->peers; | |
787 | |
788 if (peers->shpool) { | |
789 | |
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790 ssl_session = ngx_ssl_get0_session(pc->connection); |
6115 | 791 |
792 if (ssl_session == NULL) { | |
793 return; | |
794 } | |
795 | |
796 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
797 "save session: %p", ssl_session); | |
798 | |
799 len = i2d_SSL_SESSION(ssl_session, NULL); | |
800 | |
801 /* do not cache too big session */ | |
802 | |
803 if (len > NGX_SSL_MAX_SESSION_SIZE) { | |
804 return; | |
805 } | |
806 | |
807 p = buf; | |
808 (void) i2d_SSL_SESSION(ssl_session, &p); | |
809 | |
810 peer = rrp->current; | |
811 | |
812 ngx_stream_upstream_rr_peers_rlock(peers); | |
813 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
814 | |
815 if (len > peer->ssl_session_len) { | |
816 ngx_shmtx_lock(&peers->shpool->mutex); | |
817 | |
818 if (peer->ssl_session) { | |
819 ngx_slab_free_locked(peers->shpool, peer->ssl_session); | |
820 } | |
821 | |
822 peer->ssl_session = ngx_slab_alloc_locked(peers->shpool, len); | |
823 | |
824 ngx_shmtx_unlock(&peers->shpool->mutex); | |
825 | |
826 if (peer->ssl_session == NULL) { | |
827 peer->ssl_session_len = 0; | |
828 | |
829 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
830 ngx_stream_upstream_rr_peers_unlock(peers); | |
831 return; | |
832 } | |
833 | |
834 peer->ssl_session_len = len; | |
835 } | |
836 | |
837 ngx_memcpy(peer->ssl_session, buf, len); | |
838 | |
839 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
840 ngx_stream_upstream_rr_peers_unlock(peers); | |
841 | |
842 return; | |
843 } | |
844 #endif | |
845 | |
846 ssl_session = ngx_ssl_get_session(pc->connection); | |
847 | |
848 if (ssl_session == NULL) { | |
849 return; | |
850 } | |
851 | |
852 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
853 "save session: %p", ssl_session); | |
854 | |
855 peer = rrp->current; | |
856 | |
857 old_ssl_session = peer->ssl_session; | |
858 peer->ssl_session = ssl_session; | |
859 | |
860 if (old_ssl_session) { | |
861 | |
862 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
863 "old session: %p", old_ssl_session); | |
864 | |
865 /* TODO: may block */ | |
866 | |
867 ngx_ssl_free_session(old_ssl_session); | |
868 } | |
869 } | |
870 | |
6643
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871 |
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872 static ngx_int_t |
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873 ngx_stream_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data) |
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874 { |
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875 return NGX_OK; |
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876 } |
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877 |
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878 |
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879 static void |
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880 ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data) |
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881 { |
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882 return; |
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883 } |
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884 |
6115 | 885 #endif |