Mercurial > hg > nginx
annotate src/stream/ngx_stream_upstream_round_robin.c @ 9267:9a5e2296c1be default tip
Disabled handling of headers without a colon.
Starting with nginx 0.1.29 (509:9b8c906f6e63), header names not followed
by a colon and a value were allowed. Such headers were interpreted as
headers with an empty value. With this change, such headers are
unconditionally rejected.
Requested by Maksim Yevmenkin.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 08 May 2024 23:00:07 +0300 |
| parents | 90cc7194e993 |
| children |
| rev | line source |
|---|---|
| 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; |
|
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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; |
|
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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; |
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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; |
|
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Modules compatibility: upstream config field.
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|
412 rrp->config = 0; |
|
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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; | |
|
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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; | |
|
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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 | |
|
7320
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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 | |
|
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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 |