Mercurial > hg > nginx
annotate src/stream/ngx_stream.c @ 6172:3e8cddcff381
Stream: listen backlog=.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Mon, 08 Jun 2015 23:13:33 +0300 |
| parents | c13091e6292c |
| children | 68c106e6fa0a |
| rev | line source |
|---|---|
| 6115 | 1 |
| 2 /* | |
| 3 * Copyright (C) Roman Arutyunyan | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_event.h> | |
| 11 #include <ngx_stream.h> | |
| 12 | |
| 13 | |
| 14 static char *ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); | |
| 15 static ngx_int_t ngx_stream_add_ports(ngx_conf_t *cf, ngx_array_t *ports, | |
| 16 ngx_stream_listen_t *listen); | |
| 17 static char *ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports); | |
| 18 static ngx_int_t ngx_stream_add_addrs(ngx_conf_t *cf, ngx_stream_port_t *stport, | |
| 19 ngx_stream_conf_addr_t *addr); | |
| 20 #if (NGX_HAVE_INET6) | |
| 21 static ngx_int_t ngx_stream_add_addrs6(ngx_conf_t *cf, | |
| 22 ngx_stream_port_t *stport, ngx_stream_conf_addr_t *addr); | |
| 23 #endif | |
| 24 static ngx_int_t ngx_stream_cmp_conf_addrs(const void *one, const void *two); | |
| 25 | |
| 26 | |
| 27 ngx_uint_t ngx_stream_max_module; | |
| 28 | |
| 29 | |
| 30 static ngx_command_t ngx_stream_commands[] = { | |
| 31 | |
| 32 { ngx_string("stream"), | |
| 33 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
| 34 ngx_stream_block, | |
| 35 0, | |
| 36 0, | |
| 37 NULL }, | |
| 38 | |
| 39 ngx_null_command | |
| 40 }; | |
| 41 | |
| 42 | |
| 43 static ngx_core_module_t ngx_stream_module_ctx = { | |
| 44 ngx_string("stream"), | |
| 45 NULL, | |
| 46 NULL | |
| 47 }; | |
| 48 | |
| 49 | |
| 50 ngx_module_t ngx_stream_module = { | |
| 51 NGX_MODULE_V1, | |
| 52 &ngx_stream_module_ctx, /* module context */ | |
| 53 ngx_stream_commands, /* module directives */ | |
| 54 NGX_CORE_MODULE, /* module type */ | |
| 55 NULL, /* init master */ | |
| 56 NULL, /* init module */ | |
| 57 NULL, /* init process */ | |
| 58 NULL, /* init thread */ | |
| 59 NULL, /* exit thread */ | |
| 60 NULL, /* exit process */ | |
| 61 NULL, /* exit master */ | |
| 62 NGX_MODULE_V1_PADDING | |
| 63 }; | |
| 64 | |
| 65 | |
| 66 static char * | |
| 67 ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 68 { | |
| 69 char *rv; | |
| 70 ngx_uint_t i, m, mi, s; | |
| 71 ngx_conf_t pcf; | |
| 72 ngx_array_t ports; | |
| 73 ngx_stream_listen_t *listen; | |
| 74 ngx_stream_module_t *module; | |
| 75 ngx_stream_conf_ctx_t *ctx; | |
| 76 ngx_stream_core_srv_conf_t **cscfp; | |
| 77 ngx_stream_core_main_conf_t *cmcf; | |
| 78 | |
| 79 /* the main stream context */ | |
| 80 | |
| 81 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_conf_ctx_t)); | |
| 82 if (ctx == NULL) { | |
| 83 return NGX_CONF_ERROR; | |
| 84 } | |
| 85 | |
| 86 *(ngx_stream_conf_ctx_t **) conf = ctx; | |
| 87 | |
| 88 /* count the number of the stream modules and set up their indices */ | |
| 89 | |
| 90 ngx_stream_max_module = 0; | |
| 91 for (m = 0; ngx_modules[m]; m++) { | |
| 92 if (ngx_modules[m]->type != NGX_STREAM_MODULE) { | |
| 93 continue; | |
| 94 } | |
| 95 | |
| 96 ngx_modules[m]->ctx_index = ngx_stream_max_module++; | |
| 97 } | |
| 98 | |
| 99 | |
| 100 /* the stream main_conf context, it's the same in the all stream contexts */ | |
| 101 | |
| 102 ctx->main_conf = ngx_pcalloc(cf->pool, | |
| 103 sizeof(void *) * ngx_stream_max_module); | |
| 104 if (ctx->main_conf == NULL) { | |
| 105 return NGX_CONF_ERROR; | |
| 106 } | |
| 107 | |
| 108 | |
| 109 /* | |
| 110 * the stream null srv_conf context, it is used to merge | |
| 111 * the server{}s' srv_conf's | |
| 112 */ | |
| 113 | |
| 114 ctx->srv_conf = ngx_pcalloc(cf->pool, | |
| 115 sizeof(void *) * ngx_stream_max_module); | |
| 116 if (ctx->srv_conf == NULL) { | |
| 117 return NGX_CONF_ERROR; | |
| 118 } | |
| 119 | |
| 120 | |
| 121 /* | |
| 122 * create the main_conf's and the null srv_conf's of the all stream modules | |
| 123 */ | |
| 124 | |
| 125 for (m = 0; ngx_modules[m]; m++) { | |
| 126 if (ngx_modules[m]->type != NGX_STREAM_MODULE) { | |
| 127 continue; | |
| 128 } | |
| 129 | |
| 130 module = ngx_modules[m]->ctx; | |
| 131 mi = ngx_modules[m]->ctx_index; | |
| 132 | |
| 133 if (module->create_main_conf) { | |
| 134 ctx->main_conf[mi] = module->create_main_conf(cf); | |
| 135 if (ctx->main_conf[mi] == NULL) { | |
| 136 return NGX_CONF_ERROR; | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 if (module->create_srv_conf) { | |
| 141 ctx->srv_conf[mi] = module->create_srv_conf(cf); | |
| 142 if (ctx->srv_conf[mi] == NULL) { | |
| 143 return NGX_CONF_ERROR; | |
| 144 } | |
| 145 } | |
| 146 } | |
| 147 | |
| 148 | |
| 149 /* parse inside the stream{} block */ | |
| 150 | |
| 151 pcf = *cf; | |
| 152 cf->ctx = ctx; | |
| 153 | |
| 154 cf->module_type = NGX_STREAM_MODULE; | |
| 155 cf->cmd_type = NGX_STREAM_MAIN_CONF; | |
| 156 rv = ngx_conf_parse(cf, NULL); | |
| 157 | |
| 158 if (rv != NGX_CONF_OK) { | |
| 159 *cf = pcf; | |
| 160 return rv; | |
| 161 } | |
| 162 | |
| 163 | |
| 164 /* init stream{} main_conf's, merge the server{}s' srv_conf's */ | |
| 165 | |
| 166 cmcf = ctx->main_conf[ngx_stream_core_module.ctx_index]; | |
| 167 cscfp = cmcf->servers.elts; | |
| 168 | |
| 169 for (m = 0; ngx_modules[m]; m++) { | |
| 170 if (ngx_modules[m]->type != NGX_STREAM_MODULE) { | |
| 171 continue; | |
| 172 } | |
| 173 | |
| 174 module = ngx_modules[m]->ctx; | |
| 175 mi = ngx_modules[m]->ctx_index; | |
| 176 | |
| 177 /* init stream{} main_conf's */ | |
| 178 | |
| 179 cf->ctx = ctx; | |
| 180 | |
| 181 if (module->init_main_conf) { | |
| 182 rv = module->init_main_conf(cf, ctx->main_conf[mi]); | |
| 183 if (rv != NGX_CONF_OK) { | |
| 184 *cf = pcf; | |
| 185 return rv; | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 for (s = 0; s < cmcf->servers.nelts; s++) { | |
| 190 | |
| 191 /* merge the server{}s' srv_conf's */ | |
| 192 | |
| 193 cf->ctx = cscfp[s]->ctx; | |
| 194 | |
| 195 if (module->merge_srv_conf) { | |
| 196 rv = module->merge_srv_conf(cf, | |
| 197 ctx->srv_conf[mi], | |
| 198 cscfp[s]->ctx->srv_conf[mi]); | |
| 199 if (rv != NGX_CONF_OK) { | |
| 200 *cf = pcf; | |
| 201 return rv; | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 *cf = pcf; | |
| 208 | |
| 209 | |
| 210 if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_stream_conf_port_t)) | |
| 211 != NGX_OK) | |
| 212 { | |
| 213 return NGX_CONF_ERROR; | |
| 214 } | |
| 215 | |
| 216 listen = cmcf->listen.elts; | |
| 217 | |
| 218 for (i = 0; i < cmcf->listen.nelts; i++) { | |
| 219 if (ngx_stream_add_ports(cf, &ports, &listen[i]) != NGX_OK) { | |
| 220 return NGX_CONF_ERROR; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 return ngx_stream_optimize_servers(cf, &ports); | |
| 225 } | |
| 226 | |
| 227 | |
| 228 static ngx_int_t | |
| 229 ngx_stream_add_ports(ngx_conf_t *cf, ngx_array_t *ports, | |
| 230 ngx_stream_listen_t *listen) | |
| 231 { | |
| 232 in_port_t p; | |
| 233 ngx_uint_t i; | |
| 234 struct sockaddr *sa; | |
| 235 struct sockaddr_in *sin; | |
| 236 ngx_stream_conf_port_t *port; | |
| 237 ngx_stream_conf_addr_t *addr; | |
| 238 #if (NGX_HAVE_INET6) | |
| 239 struct sockaddr_in6 *sin6; | |
| 240 #endif | |
| 241 | |
|
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242 sa = &listen->u.sockaddr; |
| 6115 | 243 |
| 244 switch (sa->sa_family) { | |
| 245 | |
| 246 #if (NGX_HAVE_INET6) | |
| 247 case AF_INET6: | |
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248 sin6 = &listen->u.sockaddr_in6; |
| 6115 | 249 p = sin6->sin6_port; |
| 250 break; | |
| 251 #endif | |
| 252 | |
| 253 #if (NGX_HAVE_UNIX_DOMAIN) | |
| 254 case AF_UNIX: | |
| 255 p = 0; | |
| 256 break; | |
| 257 #endif | |
| 258 | |
| 259 default: /* AF_INET */ | |
|
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260 sin = &listen->u.sockaddr_in; |
| 6115 | 261 p = sin->sin_port; |
| 262 break; | |
| 263 } | |
| 264 | |
| 265 port = ports->elts; | |
| 266 for (i = 0; i < ports->nelts; i++) { | |
| 267 if (p == port[i].port && sa->sa_family == port[i].family) { | |
| 268 | |
| 269 /* a port is already in the port list */ | |
| 270 | |
| 271 port = &port[i]; | |
| 272 goto found; | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 /* add a port to the port list */ | |
| 277 | |
| 278 port = ngx_array_push(ports); | |
| 279 if (port == NULL) { | |
| 280 return NGX_ERROR; | |
| 281 } | |
| 282 | |
| 283 port->family = sa->sa_family; | |
| 284 port->port = p; | |
| 285 | |
| 286 if (ngx_array_init(&port->addrs, cf->temp_pool, 2, | |
| 287 sizeof(ngx_stream_conf_addr_t)) | |
| 288 != NGX_OK) | |
| 289 { | |
| 290 return NGX_ERROR; | |
| 291 } | |
| 292 | |
| 293 found: | |
| 294 | |
| 295 addr = ngx_array_push(&port->addrs); | |
| 296 if (addr == NULL) { | |
| 297 return NGX_ERROR; | |
| 298 } | |
| 299 | |
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300 addr->opt = *listen; |
| 6115 | 301 |
| 302 return NGX_OK; | |
| 303 } | |
| 304 | |
| 305 | |
| 306 static char * | |
| 307 ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports) | |
| 308 { | |
| 309 ngx_uint_t i, p, last, bind_wildcard; | |
| 310 ngx_listening_t *ls; | |
| 311 ngx_stream_port_t *stport; | |
| 312 ngx_stream_conf_port_t *port; | |
| 313 ngx_stream_conf_addr_t *addr; | |
| 314 ngx_stream_core_srv_conf_t *cscf; | |
| 315 | |
| 316 port = ports->elts; | |
| 317 for (p = 0; p < ports->nelts; p++) { | |
| 318 | |
| 319 ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, | |
| 320 sizeof(ngx_stream_conf_addr_t), ngx_stream_cmp_conf_addrs); | |
| 321 | |
| 322 addr = port[p].addrs.elts; | |
| 323 last = port[p].addrs.nelts; | |
| 324 | |
| 325 /* | |
| 326 * if there is the binding to the "*:port" then we need to bind() | |
| 327 * to the "*:port" only and ignore the other bindings | |
| 328 */ | |
| 329 | |
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330 if (addr[last - 1].opt.wildcard) { |
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331 addr[last - 1].opt.bind = 1; |
| 6115 | 332 bind_wildcard = 1; |
| 333 | |
| 334 } else { | |
| 335 bind_wildcard = 0; | |
| 336 } | |
| 337 | |
| 338 i = 0; | |
| 339 | |
| 340 while (i < last) { | |
| 341 | |
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342 if (bind_wildcard && !addr[i].opt.bind) { |
| 6115 | 343 i++; |
| 344 continue; | |
| 345 } | |
| 346 | |
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347 ls = ngx_create_listening(cf, &addr[i].opt.u.sockaddr, |
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348 addr[i].opt.socklen); |
| 6115 | 349 if (ls == NULL) { |
| 350 return NGX_CONF_ERROR; | |
| 351 } | |
| 352 | |
| 353 ls->addr_ntop = 1; | |
| 354 ls->handler = ngx_stream_init_connection; | |
| 355 ls->pool_size = 256; | |
| 356 | |
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357 cscf = addr->opt.ctx->srv_conf[ngx_stream_core_module.ctx_index]; |
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Core: the ngx_set_connection_log() macro.
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358 |
| 6115 | 359 ls->logp = cscf->error_log; |
| 360 ls->log.data = &ls->addr_text; | |
| 361 ls->log.handler = ngx_accept_log_error; | |
| 362 | |
| 6172 | 363 ls->backlog = addr[i].opt.backlog; |
| 364 | |
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365 ls->keepalive = addr[i].opt.so_keepalive; |
| 6115 | 366 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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367 ls->keepidle = addr[i].opt.tcp_keepidle; |
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368 ls->keepintvl = addr[i].opt.tcp_keepintvl; |
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369 ls->keepcnt = addr[i].opt.tcp_keepcnt; |
| 6115 | 370 #endif |
| 371 | |
| 372 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) | |
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373 ls->ipv6only = addr[i].opt.ipv6only; |
| 6115 | 374 #endif |
| 375 | |
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376 #if (NGX_HAVE_REUSEPORT) |
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377 ls->reuseport = addr[i].opt.reuseport; |
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378 #endif |
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379 |
| 6115 | 380 stport = ngx_palloc(cf->pool, sizeof(ngx_stream_port_t)); |
| 381 if (stport == NULL) { | |
| 382 return NGX_CONF_ERROR; | |
| 383 } | |
| 384 | |
| 385 ls->servers = stport; | |
| 386 | |
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Simplified ngx_http_init_listening().
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387 stport->naddrs = i + 1; |
| 6115 | 388 |
| 389 switch (ls->sockaddr->sa_family) { | |
| 390 #if (NGX_HAVE_INET6) | |
| 391 case AF_INET6: | |
| 392 if (ngx_stream_add_addrs6(cf, stport, addr) != NGX_OK) { | |
| 393 return NGX_CONF_ERROR; | |
| 394 } | |
| 395 break; | |
| 396 #endif | |
| 397 default: /* AF_INET */ | |
| 398 if (ngx_stream_add_addrs(cf, stport, addr) != NGX_OK) { | |
| 399 return NGX_CONF_ERROR; | |
| 400 } | |
| 401 break; | |
| 402 } | |
| 403 | |
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404 if (ngx_clone_listening(cf, ls) != NGX_OK) { |
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405 return NGX_CONF_ERROR; |
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406 } |
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407 |
| 6115 | 408 addr++; |
| 409 last--; | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 return NGX_CONF_OK; | |
| 414 } | |
| 415 | |
| 416 | |
| 417 static ngx_int_t | |
| 418 ngx_stream_add_addrs(ngx_conf_t *cf, ngx_stream_port_t *stport, | |
| 419 ngx_stream_conf_addr_t *addr) | |
| 420 { | |
| 421 u_char *p; | |
| 422 size_t len; | |
| 423 ngx_uint_t i; | |
| 424 struct sockaddr_in *sin; | |
| 425 ngx_stream_in_addr_t *addrs; | |
| 426 u_char buf[NGX_SOCKADDR_STRLEN]; | |
| 427 | |
| 428 stport->addrs = ngx_pcalloc(cf->pool, | |
| 429 stport->naddrs * sizeof(ngx_stream_in_addr_t)); | |
| 430 if (stport->addrs == NULL) { | |
| 431 return NGX_ERROR; | |
| 432 } | |
| 433 | |
| 434 addrs = stport->addrs; | |
| 435 | |
| 436 for (i = 0; i < stport->naddrs; i++) { | |
| 437 | |
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parents:
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diff
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438 sin = &addr[i].opt.u.sockaddr_in; |
| 6115 | 439 addrs[i].addr = sin->sin_addr.s_addr; |
| 440 | |
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441 addrs[i].conf.ctx = addr[i].opt.ctx; |
| 6115 | 442 #if (NGX_STREAM_SSL) |
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443 addrs[i].conf.ssl = addr[i].opt.ssl; |
| 6115 | 444 #endif |
| 445 | |
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446 len = ngx_sock_ntop(&addr[i].opt.u.sockaddr, addr[i].opt.socklen, buf, |
| 6115 | 447 NGX_SOCKADDR_STRLEN, 1); |
| 448 | |
| 449 p = ngx_pnalloc(cf->pool, len); | |
| 450 if (p == NULL) { | |
| 451 return NGX_ERROR; | |
| 452 } | |
| 453 | |
| 454 ngx_memcpy(p, buf, len); | |
| 455 | |
| 456 addrs[i].conf.addr_text.len = len; | |
| 457 addrs[i].conf.addr_text.data = p; | |
| 458 } | |
| 459 | |
| 460 return NGX_OK; | |
| 461 } | |
| 462 | |
| 463 | |
| 464 #if (NGX_HAVE_INET6) | |
| 465 | |
| 466 static ngx_int_t | |
| 467 ngx_stream_add_addrs6(ngx_conf_t *cf, ngx_stream_port_t *stport, | |
| 468 ngx_stream_conf_addr_t *addr) | |
| 469 { | |
| 470 u_char *p; | |
| 471 size_t len; | |
| 472 ngx_uint_t i; | |
| 473 struct sockaddr_in6 *sin6; | |
| 474 ngx_stream_in6_addr_t *addrs6; | |
| 475 u_char buf[NGX_SOCKADDR_STRLEN]; | |
| 476 | |
| 477 stport->addrs = ngx_pcalloc(cf->pool, | |
| 478 stport->naddrs * sizeof(ngx_stream_in6_addr_t)); | |
| 479 if (stport->addrs == NULL) { | |
| 480 return NGX_ERROR; | |
| 481 } | |
| 482 | |
| 483 addrs6 = stport->addrs; | |
| 484 | |
| 485 for (i = 0; i < stport->naddrs; i++) { | |
| 486 | |
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487 sin6 = &addr[i].opt.u.sockaddr_in6; |
| 6115 | 488 addrs6[i].addr6 = sin6->sin6_addr; |
| 489 | |
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490 addrs6[i].conf.ctx = addr[i].opt.ctx; |
| 6115 | 491 #if (NGX_STREAM_SSL) |
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492 addrs6[i].conf.ssl = addr[i].opt.ssl; |
| 6115 | 493 #endif |
| 494 | |
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495 len = ngx_sock_ntop(&addr[i].opt.u.sockaddr, addr[i].opt.socklen, buf, |
| 6115 | 496 NGX_SOCKADDR_STRLEN, 1); |
| 497 | |
| 498 p = ngx_pnalloc(cf->pool, len); | |
| 499 if (p == NULL) { | |
| 500 return NGX_ERROR; | |
| 501 } | |
| 502 | |
| 503 ngx_memcpy(p, buf, len); | |
| 504 | |
| 505 addrs6[i].conf.addr_text.len = len; | |
| 506 addrs6[i].conf.addr_text.data = p; | |
| 507 } | |
| 508 | |
| 509 return NGX_OK; | |
| 510 } | |
| 511 | |
| 512 #endif | |
| 513 | |
| 514 | |
| 515 static ngx_int_t | |
| 516 ngx_stream_cmp_conf_addrs(const void *one, const void *two) | |
| 517 { | |
| 518 ngx_stream_conf_addr_t *first, *second; | |
| 519 | |
| 520 first = (ngx_stream_conf_addr_t *) one; | |
| 521 second = (ngx_stream_conf_addr_t *) two; | |
| 522 | |
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523 if (first->opt.wildcard) { |
| 6115 | 524 /* a wildcard must be the last resort, shift it to the end */ |
| 525 return 1; | |
| 526 } | |
| 527 | |
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528 if (second->opt.wildcard) { |
| 6115 | 529 /* a wildcard must be the last resort, shift it to the end */ |
| 530 return -1; | |
| 531 } | |
| 532 | |
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533 if (first->opt.bind && !second->opt.bind) { |
| 6115 | 534 /* shift explicit bind()ed addresses to the start */ |
| 535 return -1; | |
| 536 } | |
| 537 | |
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538 if (!first->opt.bind && second->opt.bind) { |
| 6115 | 539 /* shift explicit bind()ed addresses to the start */ |
| 540 return 1; | |
| 541 } | |
| 542 | |
| 543 /* do not sort by default */ | |
| 544 | |
| 545 return 0; | |
| 546 } |