Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream.c @ 6692:56fc55e32f23
Stream: filters.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 15 Sep 2016 14:55:46 +0300 |
parents | 7357abd1fa8c |
children | 3908156a51fa |
rev | line source |
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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 | |
6692 | 30 ngx_stream_filter_pt ngx_stream_top_filter; |
31 | |
32 | |
6115 | 33 static ngx_command_t ngx_stream_commands[] = { |
34 | |
35 { ngx_string("stream"), | |
36 NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, | |
37 ngx_stream_block, | |
38 0, | |
39 0, | |
40 NULL }, | |
41 | |
42 ngx_null_command | |
43 }; | |
44 | |
45 | |
46 static ngx_core_module_t ngx_stream_module_ctx = { | |
47 ngx_string("stream"), | |
48 NULL, | |
49 NULL | |
50 }; | |
51 | |
52 | |
53 ngx_module_t ngx_stream_module = { | |
54 NGX_MODULE_V1, | |
55 &ngx_stream_module_ctx, /* module context */ | |
56 ngx_stream_commands, /* module directives */ | |
57 NGX_CORE_MODULE, /* module type */ | |
58 NULL, /* init master */ | |
59 NULL, /* init module */ | |
60 NULL, /* init process */ | |
61 NULL, /* init thread */ | |
62 NULL, /* exit thread */ | |
63 NULL, /* exit process */ | |
64 NULL, /* exit master */ | |
65 NGX_MODULE_V1_PADDING | |
66 }; | |
67 | |
68 | |
69 static char * | |
70 ngx_stream_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
71 { | |
72 char *rv; | |
73 ngx_uint_t i, m, mi, s; | |
74 ngx_conf_t pcf; | |
75 ngx_array_t ports; | |
76 ngx_stream_listen_t *listen; | |
77 ngx_stream_module_t *module; | |
78 ngx_stream_conf_ctx_t *ctx; | |
79 ngx_stream_core_srv_conf_t **cscfp; | |
80 ngx_stream_core_main_conf_t *cmcf; | |
81 | |
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82 if (*(ngx_stream_conf_ctx_t **) conf) { |
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83 return "is duplicate"; |
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84 } |
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85 |
6115 | 86 /* the main stream context */ |
87 | |
88 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_conf_ctx_t)); | |
89 if (ctx == NULL) { | |
90 return NGX_CONF_ERROR; | |
91 } | |
92 | |
93 *(ngx_stream_conf_ctx_t **) conf = ctx; | |
94 | |
95 /* count the number of the stream modules and set up their indices */ | |
96 | |
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97 ngx_stream_max_module = ngx_count_modules(cf->cycle, NGX_STREAM_MODULE); |
6115 | 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 | |
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125 for (m = 0; cf->cycle->modules[m]; m++) { |
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126 if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) { |
6115 | 127 continue; |
128 } | |
129 | |
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130 module = cf->cycle->modules[m]->ctx; |
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131 mi = cf->cycle->modules[m]->ctx_index; |
6115 | 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 pcf = *cf; | |
150 cf->ctx = ctx; | |
151 | |
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152 for (m = 0; cf->cycle->modules[m]; m++) { |
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153 if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) { |
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154 continue; |
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155 } |
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156 |
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157 module = cf->cycle->modules[m]->ctx; |
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158 |
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159 if (module->preconfiguration) { |
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160 if (module->preconfiguration(cf) != NGX_OK) { |
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161 return NGX_CONF_ERROR; |
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162 } |
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163 } |
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164 } |
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165 |
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166 |
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167 /* parse inside the stream{} block */ |
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168 |
6115 | 169 cf->module_type = NGX_STREAM_MODULE; |
170 cf->cmd_type = NGX_STREAM_MAIN_CONF; | |
171 rv = ngx_conf_parse(cf, NULL); | |
172 | |
173 if (rv != NGX_CONF_OK) { | |
174 *cf = pcf; | |
175 return rv; | |
176 } | |
177 | |
178 | |
179 /* init stream{} main_conf's, merge the server{}s' srv_conf's */ | |
180 | |
181 cmcf = ctx->main_conf[ngx_stream_core_module.ctx_index]; | |
182 cscfp = cmcf->servers.elts; | |
183 | |
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184 for (m = 0; cf->cycle->modules[m]; m++) { |
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185 if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) { |
6115 | 186 continue; |
187 } | |
188 | |
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189 module = cf->cycle->modules[m]->ctx; |
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190 mi = cf->cycle->modules[m]->ctx_index; |
6115 | 191 |
192 /* init stream{} main_conf's */ | |
193 | |
194 cf->ctx = ctx; | |
195 | |
196 if (module->init_main_conf) { | |
197 rv = module->init_main_conf(cf, ctx->main_conf[mi]); | |
198 if (rv != NGX_CONF_OK) { | |
199 *cf = pcf; | |
200 return rv; | |
201 } | |
202 } | |
203 | |
204 for (s = 0; s < cmcf->servers.nelts; s++) { | |
205 | |
206 /* merge the server{}s' srv_conf's */ | |
207 | |
208 cf->ctx = cscfp[s]->ctx; | |
209 | |
210 if (module->merge_srv_conf) { | |
211 rv = module->merge_srv_conf(cf, | |
212 ctx->srv_conf[mi], | |
213 cscfp[s]->ctx->srv_conf[mi]); | |
214 if (rv != NGX_CONF_OK) { | |
215 *cf = pcf; | |
216 return rv; | |
217 } | |
218 } | |
219 } | |
220 } | |
221 | |
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222 for (m = 0; cf->cycle->modules[m]; m++) { |
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223 if (cf->cycle->modules[m]->type != NGX_STREAM_MODULE) { |
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224 continue; |
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225 } |
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226 |
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227 module = cf->cycle->modules[m]->ctx; |
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228 |
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229 if (module->postconfiguration) { |
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230 if (module->postconfiguration(cf) != NGX_OK) { |
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231 return NGX_CONF_ERROR; |
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232 } |
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233 } |
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234 } |
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235 |
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236 if (ngx_stream_variables_init_vars(cf) != NGX_OK) { |
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237 return NGX_CONF_ERROR; |
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238 } |
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239 |
6115 | 240 *cf = pcf; |
241 | |
242 | |
243 if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_stream_conf_port_t)) | |
244 != NGX_OK) | |
245 { | |
246 return NGX_CONF_ERROR; | |
247 } | |
248 | |
249 listen = cmcf->listen.elts; | |
250 | |
251 for (i = 0; i < cmcf->listen.nelts; i++) { | |
252 if (ngx_stream_add_ports(cf, &ports, &listen[i]) != NGX_OK) { | |
253 return NGX_CONF_ERROR; | |
254 } | |
255 } | |
256 | |
257 return ngx_stream_optimize_servers(cf, &ports); | |
258 } | |
259 | |
260 | |
261 static ngx_int_t | |
262 ngx_stream_add_ports(ngx_conf_t *cf, ngx_array_t *ports, | |
263 ngx_stream_listen_t *listen) | |
264 { | |
265 in_port_t p; | |
266 ngx_uint_t i; | |
267 struct sockaddr *sa; | |
268 ngx_stream_conf_port_t *port; | |
269 ngx_stream_conf_addr_t *addr; | |
270 | |
6560
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Renamed "u" to "sockaddr" in listen options types.
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271 sa = &listen->sockaddr.sockaddr; |
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272 p = ngx_inet_get_port(sa); |
6115 | 273 |
274 port = ports->elts; | |
275 for (i = 0; i < ports->nelts; i++) { | |
276 | |
6436 | 277 if (p == port[i].port |
278 && listen->type == port[i].type | |
279 && sa->sa_family == port[i].family) | |
280 { | |
6115 | 281 /* a port is already in the port list */ |
282 | |
283 port = &port[i]; | |
284 goto found; | |
285 } | |
286 } | |
287 | |
288 /* add a port to the port list */ | |
289 | |
290 port = ngx_array_push(ports); | |
291 if (port == NULL) { | |
292 return NGX_ERROR; | |
293 } | |
294 | |
295 port->family = sa->sa_family; | |
6436 | 296 port->type = listen->type; |
6115 | 297 port->port = p; |
298 | |
299 if (ngx_array_init(&port->addrs, cf->temp_pool, 2, | |
300 sizeof(ngx_stream_conf_addr_t)) | |
301 != NGX_OK) | |
302 { | |
303 return NGX_ERROR; | |
304 } | |
305 | |
306 found: | |
307 | |
308 addr = ngx_array_push(&port->addrs); | |
309 if (addr == NULL) { | |
310 return NGX_ERROR; | |
311 } | |
312 | |
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313 addr->opt = *listen; |
6115 | 314 |
315 return NGX_OK; | |
316 } | |
317 | |
318 | |
319 static char * | |
320 ngx_stream_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports) | |
321 { | |
322 ngx_uint_t i, p, last, bind_wildcard; | |
323 ngx_listening_t *ls; | |
324 ngx_stream_port_t *stport; | |
325 ngx_stream_conf_port_t *port; | |
326 ngx_stream_conf_addr_t *addr; | |
327 ngx_stream_core_srv_conf_t *cscf; | |
328 | |
329 port = ports->elts; | |
330 for (p = 0; p < ports->nelts; p++) { | |
331 | |
332 ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, | |
333 sizeof(ngx_stream_conf_addr_t), ngx_stream_cmp_conf_addrs); | |
334 | |
335 addr = port[p].addrs.elts; | |
336 last = port[p].addrs.nelts; | |
337 | |
338 /* | |
339 * if there is the binding to the "*:port" then we need to bind() | |
340 * to the "*:port" only and ignore the other bindings | |
341 */ | |
342 | |
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343 if (addr[last - 1].opt.wildcard) { |
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344 addr[last - 1].opt.bind = 1; |
6115 | 345 bind_wildcard = 1; |
346 | |
347 } else { | |
348 bind_wildcard = 0; | |
349 } | |
350 | |
351 i = 0; | |
352 | |
353 while (i < last) { | |
354 | |
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355 if (bind_wildcard && !addr[i].opt.bind) { |
6115 | 356 i++; |
357 continue; | |
358 } | |
359 | |
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360 ls = ngx_create_listening(cf, &addr[i].opt.sockaddr.sockaddr, |
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361 addr[i].opt.socklen); |
6115 | 362 if (ls == NULL) { |
363 return NGX_CONF_ERROR; | |
364 } | |
365 | |
366 ls->addr_ntop = 1; | |
367 ls->handler = ngx_stream_init_connection; | |
368 ls->pool_size = 256; | |
6436 | 369 ls->type = addr[i].opt.type; |
6115 | 370 |
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371 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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372 |
6115 | 373 ls->logp = cscf->error_log; |
374 ls->log.data = &ls->addr_text; | |
375 ls->log.handler = ngx_accept_log_error; | |
376 | |
6172 | 377 ls->backlog = addr[i].opt.backlog; |
378 | |
6436 | 379 ls->wildcard = addr[i].opt.wildcard; |
380 | |
6170
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381 ls->keepalive = addr[i].opt.so_keepalive; |
6115 | 382 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
6170
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383 ls->keepidle = addr[i].opt.tcp_keepidle; |
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384 ls->keepintvl = addr[i].opt.tcp_keepintvl; |
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385 ls->keepcnt = addr[i].opt.tcp_keepcnt; |
6115 | 386 #endif |
387 | |
388 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) | |
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389 ls->ipv6only = addr[i].opt.ipv6only; |
6115 | 390 #endif |
391 | |
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392 #if (NGX_HAVE_REUSEPORT) |
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393 ls->reuseport = addr[i].opt.reuseport; |
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394 #endif |
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395 |
6115 | 396 stport = ngx_palloc(cf->pool, sizeof(ngx_stream_port_t)); |
397 if (stport == NULL) { | |
398 return NGX_CONF_ERROR; | |
399 } | |
400 | |
401 ls->servers = stport; | |
402 | |
6152
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Simplified ngx_http_init_listening().
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changeset
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403 stport->naddrs = i + 1; |
6115 | 404 |
405 switch (ls->sockaddr->sa_family) { | |
406 #if (NGX_HAVE_INET6) | |
407 case AF_INET6: | |
408 if (ngx_stream_add_addrs6(cf, stport, addr) != NGX_OK) { | |
409 return NGX_CONF_ERROR; | |
410 } | |
411 break; | |
412 #endif | |
413 default: /* AF_INET */ | |
414 if (ngx_stream_add_addrs(cf, stport, addr) != NGX_OK) { | |
415 return NGX_CONF_ERROR; | |
416 } | |
417 break; | |
418 } | |
419 | |
6153
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The "reuseport" option of the "listen" directive.
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420 if (ngx_clone_listening(cf, ls) != NGX_OK) { |
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421 return NGX_CONF_ERROR; |
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422 } |
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423 |
6115 | 424 addr++; |
425 last--; | |
426 } | |
427 } | |
428 | |
429 return NGX_CONF_OK; | |
430 } | |
431 | |
432 | |
433 static ngx_int_t | |
434 ngx_stream_add_addrs(ngx_conf_t *cf, ngx_stream_port_t *stport, | |
435 ngx_stream_conf_addr_t *addr) | |
436 { | |
437 u_char *p; | |
438 size_t len; | |
439 ngx_uint_t i; | |
440 struct sockaddr_in *sin; | |
441 ngx_stream_in_addr_t *addrs; | |
442 u_char buf[NGX_SOCKADDR_STRLEN]; | |
443 | |
444 stport->addrs = ngx_pcalloc(cf->pool, | |
445 stport->naddrs * sizeof(ngx_stream_in_addr_t)); | |
446 if (stport->addrs == NULL) { | |
447 return NGX_ERROR; | |
448 } | |
449 | |
450 addrs = stport->addrs; | |
451 | |
452 for (i = 0; i < stport->naddrs; i++) { | |
453 | |
6560
c90cf79d0e1d
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parents:
6436
diff
changeset
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454 sin = &addr[i].opt.sockaddr.sockaddr_in; |
6115 | 455 addrs[i].addr = sin->sin_addr.s_addr; |
456 | |
6170
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457 addrs[i].conf.ctx = addr[i].opt.ctx; |
6115 | 458 #if (NGX_STREAM_SSL) |
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459 addrs[i].conf.ssl = addr[i].opt.ssl; |
6115 | 460 #endif |
6680
7357abd1fa8c
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parents:
6607
diff
changeset
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461 addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; |
6115 | 462 |
6560
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parents:
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diff
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463 len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
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diff
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464 buf, NGX_SOCKADDR_STRLEN, 1); |
6115 | 465 |
466 p = ngx_pnalloc(cf->pool, len); | |
467 if (p == NULL) { | |
468 return NGX_ERROR; | |
469 } | |
470 | |
471 ngx_memcpy(p, buf, len); | |
472 | |
473 addrs[i].conf.addr_text.len = len; | |
474 addrs[i].conf.addr_text.data = p; | |
475 } | |
476 | |
477 return NGX_OK; | |
478 } | |
479 | |
480 | |
481 #if (NGX_HAVE_INET6) | |
482 | |
483 static ngx_int_t | |
484 ngx_stream_add_addrs6(ngx_conf_t *cf, ngx_stream_port_t *stport, | |
485 ngx_stream_conf_addr_t *addr) | |
486 { | |
487 u_char *p; | |
488 size_t len; | |
489 ngx_uint_t i; | |
490 struct sockaddr_in6 *sin6; | |
491 ngx_stream_in6_addr_t *addrs6; | |
492 u_char buf[NGX_SOCKADDR_STRLEN]; | |
493 | |
494 stport->addrs = ngx_pcalloc(cf->pool, | |
495 stport->naddrs * sizeof(ngx_stream_in6_addr_t)); | |
496 if (stport->addrs == NULL) { | |
497 return NGX_ERROR; | |
498 } | |
499 | |
500 addrs6 = stport->addrs; | |
501 | |
502 for (i = 0; i < stport->naddrs; i++) { | |
503 | |
6560
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504 sin6 = &addr[i].opt.sockaddr.sockaddr_in6; |
6115 | 505 addrs6[i].addr6 = sin6->sin6_addr; |
506 | |
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507 addrs6[i].conf.ctx = addr[i].opt.ctx; |
6115 | 508 #if (NGX_STREAM_SSL) |
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509 addrs6[i].conf.ssl = addr[i].opt.ssl; |
6115 | 510 #endif |
6680
7357abd1fa8c
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diff
changeset
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511 addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; |
6115 | 512 |
6560
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diff
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513 len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen, |
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514 buf, NGX_SOCKADDR_STRLEN, 1); |
6115 | 515 |
516 p = ngx_pnalloc(cf->pool, len); | |
517 if (p == NULL) { | |
518 return NGX_ERROR; | |
519 } | |
520 | |
521 ngx_memcpy(p, buf, len); | |
522 | |
523 addrs6[i].conf.addr_text.len = len; | |
524 addrs6[i].conf.addr_text.data = p; | |
525 } | |
526 | |
527 return NGX_OK; | |
528 } | |
529 | |
530 #endif | |
531 | |
532 | |
533 static ngx_int_t | |
534 ngx_stream_cmp_conf_addrs(const void *one, const void *two) | |
535 { | |
536 ngx_stream_conf_addr_t *first, *second; | |
537 | |
538 first = (ngx_stream_conf_addr_t *) one; | |
539 second = (ngx_stream_conf_addr_t *) two; | |
540 | |
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diff
changeset
|
541 if (first->opt.wildcard) { |
6115 | 542 /* a wildcard must be the last resort, shift it to the end */ |
543 return 1; | |
544 } | |
545 | |
6170
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diff
changeset
|
546 if (second->opt.wildcard) { |
6115 | 547 /* a wildcard must be the last resort, shift it to the end */ |
548 return -1; | |
549 } | |
550 | |
6170
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|
551 if (first->opt.bind && !second->opt.bind) { |
6115 | 552 /* shift explicit bind()ed addresses to the start */ |
553 return -1; | |
554 } | |
555 | |
6170
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changeset
|
556 if (!first->opt.bind && second->opt.bind) { |
6115 | 557 /* shift explicit bind()ed addresses to the start */ |
558 return 1; | |
559 } | |
560 | |
561 /* do not sort by default */ | |
562 | |
563 return 0; | |
564 } |