?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Update and clean Tomato RAF files
[tomato.git] / release / src / router / nginx / src / core / ngx_connection.c
blob7ed781e0add493e19b32fbe0bbc07e250f7f90f8
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_event.h>
11
12
13 ngx_os_io_t ngx_io;
14
15
16 static void ngx_drain_connections(void);
17
18
19 ngx_listening_t *
20 ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen)
21 {
22 size_t len;
23 ngx_listening_t *ls;
24 struct sockaddr *sa;
25 u_char text[NGX_SOCKADDR_STRLEN];
26
27 ls = ngx_array_push(&cf->cycle->listening);
28 if (ls == NULL) {
29 return NULL;
30 }
31
32 ngx_memzero(ls, sizeof(ngx_listening_t));
33
34 sa = ngx_palloc(cf->pool, socklen);
35 if (sa == NULL) {
36 return NULL;
37 }
38
39 ngx_memcpy(sa, sockaddr, socklen);
40
41 ls->sockaddr = sa;
42 ls->socklen = socklen;
43
44 len = ngx_sock_ntop(sa, text, NGX_SOCKADDR_STRLEN, 1);
45 ls->addr_text.len = len;
46
47 switch (ls->sockaddr->sa_family) {
48 #if (NGX_HAVE_INET6)
49 case AF_INET6:
50 ls->addr_text_max_len = NGX_INET6_ADDRSTRLEN;
51 break;
52 #endif
53 #if (NGX_HAVE_UNIX_DOMAIN)
54 case AF_UNIX:
55 ls->addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
56 len++;
57 break;
58 #endif
59 case AF_INET:
60 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
61 break;
62 default:
63 ls->addr_text_max_len = NGX_SOCKADDR_STRLEN;
64 break;
65 }
66
67 ls->addr_text.data = ngx_pnalloc(cf->pool, len);
68 if (ls->addr_text.data == NULL) {
69 return NULL;
70 }
71
72 ngx_memcpy(ls->addr_text.data, text, len);
73
74 ls->fd = (ngx_socket_t) -1;
75 ls->type = SOCK_STREAM;
76
77 ls->backlog = NGX_LISTEN_BACKLOG;
78 ls->rcvbuf = -1;
79 ls->sndbuf = -1;
80
81 #if (NGX_HAVE_SETFIB)
82 ls->setfib = -1;
83 #endif
84
85 return ls;
86 }
87
88
89 ngx_int_t
90 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
91 {
92 size_t len;
93 ngx_uint_t i;
94 ngx_listening_t *ls;
95 socklen_t olen;
96 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
97 ngx_err_t err;
98 struct accept_filter_arg af;
99 #endif
100 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
101 int timeout;
102 #endif
103
104 ls = cycle->listening.elts;
105 for (i = 0; i < cycle->listening.nelts; i++) {
106
107 ls[i].sockaddr = ngx_palloc(cycle->pool, NGX_SOCKADDRLEN);
108 if (ls[i].sockaddr == NULL) {
109 return NGX_ERROR;
110 }
111
112 ls[i].socklen = NGX_SOCKADDRLEN;
113 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
114 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
115 "getsockname() of the inherited "
116 "socket #%d failed", ls[i].fd);
117 ls[i].ignore = 1;
118 continue;
119 }
120
121 switch (ls[i].sockaddr->sa_family) {
122
123 #if (NGX_HAVE_INET6)
124 case AF_INET6:
125 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
126 len = NGX_INET6_ADDRSTRLEN + sizeof(":65535") - 1;
127 break;
128 #endif
129
130 #if (NGX_HAVE_UNIX_DOMAIN)
131 case AF_UNIX:
132 ls[i].addr_text_max_len = NGX_UNIX_ADDRSTRLEN;
133 len = NGX_UNIX_ADDRSTRLEN;
134 break;
135 #endif
136
137 case AF_INET:
138 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
139 len = NGX_INET_ADDRSTRLEN + sizeof(":65535") - 1;
140 break;
141
142 default:
143 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
144 "the inherited socket #%d has "
145 "an unsupported protocol family", ls[i].fd);
146 ls[i].ignore = 1;
147 continue;
148 }
149
150 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
151 if (ls[i].addr_text.data == NULL) {
152 return NGX_ERROR;
153 }
154
155 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
156 if (len == 0) {
157 return NGX_ERROR;
158 }
159
160 ls[i].addr_text.len = len;
161
162 ls[i].backlog = NGX_LISTEN_BACKLOG;
163
164 olen = sizeof(int);
165
166 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
167 &olen)
168 == -1)
169 {
170 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
171 "getsockopt(SO_RCVBUF) %V failed, ignored",
172 &ls[i].addr_text);
173
174 ls[i].rcvbuf = -1;
175 }
176
177 olen = sizeof(int);
178
179 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
180 &olen)
181 == -1)
182 {
183 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
184 "getsockopt(SO_SNDBUF) %V failed, ignored",
185 &ls[i].addr_text);
186
187 ls[i].sndbuf = -1;
188 }
189
190 #if 0
191 /* SO_SETFIB is currently a set only option */
192
193 #if (NGX_HAVE_SETFIB)
194
195 if (getsockopt(ls[i].setfib, SOL_SOCKET, SO_SETFIB,
196 (void *) &ls[i].setfib, &olen)
197 == -1)
198 {
199 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
200 "getsockopt(SO_SETFIB) %V failed, ignored",
201 &ls[i].addr_text);
202
203 ls[i].setfib = -1;
204 }
205
206 #endif
207 #endif
208
209 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
210
211 ngx_memzero(&af, sizeof(struct accept_filter_arg));
212 olen = sizeof(struct accept_filter_arg);
213
214 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
215 == -1)
216 {
217 err = ngx_errno;
218
219 if (err == NGX_EINVAL) {
220 continue;
221 }
222
223 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
224 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
225 &ls[i].addr_text);
226 continue;
227 }
228
229 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
230 continue;
231 }
232
233 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
234 if (ls[i].accept_filter == NULL) {
235 return NGX_ERROR;
236 }
237
238 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
239 (u_char *) af.af_name, 16);
240 #endif
241
242 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
243
244 timeout = 0;
245 olen = sizeof(int);
246
247 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
248 == -1)
249 {
250 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
251 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
252 &ls[i].addr_text);
253 continue;
254 }
255
256 if (olen < sizeof(int) || timeout == 0) {
257 continue;
258 }
259
260 ls[i].deferred_accept = 1;
261 #endif
262 }
263
264 return NGX_OK;
265 }
266
267
268 ngx_int_t
269 ngx_open_listening_sockets(ngx_cycle_t *cycle)
270 {
271 int reuseaddr;
272 ngx_uint_t i, tries, failed;
273 ngx_err_t err;
274 ngx_log_t *log;
275 ngx_socket_t s;
276 ngx_listening_t *ls;
277
278 reuseaddr = 1;
279 #if (NGX_SUPPRESS_WARN)
280 failed = 0;
281 #endif
282
283 log = cycle->log;
284
285 /* TODO: configurable try number */
286
287 for (tries = 5; tries; tries--) {
288 failed = 0;
289
290 /* for each listening socket */
291
292 ls = cycle->listening.elts;
293 for (i = 0; i < cycle->listening.nelts; i++) {
294
295 if (ls[i].ignore) {
296 continue;
297 }
298
299 if (ls[i].fd != -1) {
300 continue;
301 }
302
303 if (ls[i].inherited) {
304
305 /* TODO: close on exit */
306 /* TODO: nonblocking */
307 /* TODO: deferred accept */
308
309 continue;
310 }
311
312 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
313
314 if (s == -1) {
315 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
316 ngx_socket_n " %V failed", &ls[i].addr_text);
317 return NGX_ERROR;
318 }
319
320 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
321 (const void *) &reuseaddr, sizeof(int))
322 == -1)
323 {
324 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
325 "setsockopt(SO_REUSEADDR) %V failed",
326 &ls[i].addr_text);
327
328 if (ngx_close_socket(s) == -1) {
329 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
330 ngx_close_socket_n " %V failed",
331 &ls[i].addr_text);
332 }
333
334 return NGX_ERROR;
335 }
336
337 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
338
339 if (ls[i].sockaddr->sa_family == AF_INET6) {
340 int ipv6only;
341
342 ipv6only = ls[i].ipv6only;
343
344 if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
345 (const void *) &ipv6only, sizeof(int))
346 == -1)
347 {
348 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
349 "setsockopt(IPV6_V6ONLY) %V failed, ignored",
350 &ls[i].addr_text);
351 }
352 }
353 #endif
354 /* TODO: close on exit */
355
356 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
357 if (ngx_nonblocking(s) == -1) {
358 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
359 ngx_nonblocking_n " %V failed",
360 &ls[i].addr_text);
361
362 if (ngx_close_socket(s) == -1) {
363 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
364 ngx_close_socket_n " %V failed",
365 &ls[i].addr_text);
366 }
367
368 return NGX_ERROR;
369 }
370 }
371
372 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
373 "bind() %V #%d ", &ls[i].addr_text, s);
374
375 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
376 err = ngx_socket_errno;
377
378 if (err == NGX_EADDRINUSE && ngx_test_config) {
379 continue;
380 }
381
382 ngx_log_error(NGX_LOG_EMERG, log, err,
383 "bind() to %V failed", &ls[i].addr_text);
384
385 if (ngx_close_socket(s) == -1) {
386 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
387 ngx_close_socket_n " %V failed",
388 &ls[i].addr_text);
389 }
390
391 if (err != NGX_EADDRINUSE) {
392 return NGX_ERROR;
393 }
394
395 failed = 1;
396
397 continue;
398 }
399
400 #if (NGX_HAVE_UNIX_DOMAIN)
401
402 if (ls[i].sockaddr->sa_family == AF_UNIX) {
403 mode_t mode;
404 u_char *name;
405
406 name = ls[i].addr_text.data + sizeof("unix:") - 1;
407 mode = (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
408
409 if (chmod((char *) name, mode) == -1) {
410 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
411 "chmod() \"%s\" failed", name);
412 }
413
414 if (ngx_test_config) {
415 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
416 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
417 ngx_delete_file_n " %s failed", name);
418 }
419 }
420 }
421 #endif
422
423 if (listen(s, ls[i].backlog) == -1) {
424 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
425 "listen() to %V, backlog %d failed",
426 &ls[i].addr_text, ls[i].backlog);
427
428 if (ngx_close_socket(s) == -1) {
429 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
430 ngx_close_socket_n " %V failed",
431 &ls[i].addr_text);
432 }
433
434 return NGX_ERROR;
435 }
436
437 ls[i].listen = 1;
438
439 ls[i].fd = s;
440 }
441
442 if (!failed) {
443 break;
444 }
445
446 /* TODO: delay configurable */
447
448 ngx_log_error(NGX_LOG_NOTICE, log, 0,
449 "try again to bind() after 500ms");
450
451 ngx_msleep(500);
452 }
453
454 if (failed) {
455 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
456 return NGX_ERROR;
457 }
458
459 return NGX_OK;
460 }
461
462
463 void
464 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
465 {
466 int keepalive;
467 ngx_uint_t i;
468 ngx_listening_t *ls;
469
470 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
471 struct accept_filter_arg af;
472 #endif
473 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
474 int timeout;
475 #endif
476
477 ls = cycle->listening.elts;
478 for (i = 0; i < cycle->listening.nelts; i++) {
479
480 ls[i].log = *ls[i].logp;
481
482 if (ls[i].rcvbuf != -1) {
483 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
484 (const void *) &ls[i].rcvbuf, sizeof(int))
485 == -1)
486 {
487 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
488 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
489 ls[i].rcvbuf, &ls[i].addr_text);
490 }
491 }
492
493 if (ls[i].sndbuf != -1) {
494 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
495 (const void *) &ls[i].sndbuf, sizeof(int))
496 == -1)
497 {
498 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
499 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
500 ls[i].sndbuf, &ls[i].addr_text);
501 }
502 }
503
504 if (ls[i].keepalive) {
505 keepalive = (ls[i].keepalive == 1) ? 1 : 0;
506
507 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_KEEPALIVE,
508 (const void *) &keepalive, sizeof(int))
509 == -1)
510 {
511 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
512 "setsockopt(SO_KEEPALIVE, %d) %V failed, ignored",
513 keepalive, &ls[i].addr_text);
514 }
515 }
516
517 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
518
519 if (ls[i].keepidle) {
520 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPIDLE,
521 (const void *) &ls[i].keepidle, sizeof(int))
522 == -1)
523 {
524 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
525 "setsockopt(TCP_KEEPIDLE, %d) %V failed, ignored",
526 ls[i].keepidle, &ls[i].addr_text);
527 }
528 }
529
530 if (ls[i].keepintvl) {
531 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPINTVL,
532 (const void *) &ls[i].keepintvl, sizeof(int))
533 == -1)
534 {
535 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
536 "setsockopt(TCP_KEEPINTVL, %d) %V failed, ignored",
537 ls[i].keepintvl, &ls[i].addr_text);
538 }
539 }
540
541 if (ls[i].keepcnt) {
542 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_KEEPCNT,
543 (const void *) &ls[i].keepcnt, sizeof(int))
544 == -1)
545 {
546 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
547 "setsockopt(TCP_KEEPCNT, %d) %V failed, ignored",
548 ls[i].keepcnt, &ls[i].addr_text);
549 }
550 }
551
552 #endif
553
554 #if (NGX_HAVE_SETFIB)
555 if (ls[i].setfib != -1) {
556 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SETFIB,
557 (const void *) &ls[i].setfib, sizeof(int))
558 == -1)
559 {
560 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
561 "setsockopt(SO_SETFIB, %d) %V failed, ignored",
562 ls[i].setfib, &ls[i].addr_text);
563 }
564 }
565 #endif
566
567 #if 0
568 if (1) {
569 int tcp_nodelay = 1;
570
571 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
572 (const void *) &tcp_nodelay, sizeof(int))
573 == -1)
574 {
575 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
576 "setsockopt(TCP_NODELAY) %V failed, ignored",
577 &ls[i].addr_text);
578 }
579 }
580 #endif
581
582 if (ls[i].listen) {
583
584 /* change backlog via listen() */
585
586 if (listen(ls[i].fd, ls[i].backlog) == -1) {
587 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
588 "listen() to %V, backlog %d failed, ignored",
589 &ls[i].addr_text, ls[i].backlog);
590 }
591 }
592
593 /*
594 * setting deferred mode should be last operation on socket,
595 * because code may prematurely continue cycle on failure
596 */
597
598 #if (NGX_HAVE_DEFERRED_ACCEPT)
599
600 #ifdef SO_ACCEPTFILTER
601
602 if (ls[i].delete_deferred) {
603 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
604 == -1)
605 {
606 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
607 "setsockopt(SO_ACCEPTFILTER, NULL) "
608 "for %V failed, ignored",
609 &ls[i].addr_text);
610
611 if (ls[i].accept_filter) {
612 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
613 "could not change the accept filter "
614 "to \"%s\" for %V, ignored",
615 ls[i].accept_filter, &ls[i].addr_text);
616 }
617
618 continue;
619 }
620
621 ls[i].deferred_accept = 0;
622 }
623
624 if (ls[i].add_deferred) {
625 ngx_memzero(&af, sizeof(struct accept_filter_arg));
626 (void) ngx_cpystrn((u_char *) af.af_name,
627 (u_char *) ls[i].accept_filter, 16);
628
629 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
630 &af, sizeof(struct accept_filter_arg))
631 == -1)
632 {
633 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
634 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
635 "for %V failed, ignored",
636 ls[i].accept_filter, &ls[i].addr_text);
637 continue;
638 }
639
640 ls[i].deferred_accept = 1;
641 }
642
643 #endif
644
645 #ifdef TCP_DEFER_ACCEPT
646
647 if (ls[i].add_deferred || ls[i].delete_deferred) {
648
649 if (ls[i].add_deferred) {
650 timeout = (int) (ls[i].post_accept_timeout / 1000);
651
652 } else {
653 timeout = 0;
654 }
655
656 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
657 &timeout, sizeof(int))
658 == -1)
659 {
660 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
661 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
662 "ignored",
663 timeout, &ls[i].addr_text);
664
665 continue;
666 }
667 }
668
669 if (ls[i].add_deferred) {
670 ls[i].deferred_accept = 1;
671 }
672
673 #endif
674
675 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
676 }
677
678 return;
679 }
680
681
682 void
683 ngx_close_listening_sockets(ngx_cycle_t *cycle)
684 {
685 ngx_uint_t i;
686 ngx_listening_t *ls;
687 ngx_connection_t *c;
688
689 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
690 return;
691 }
692
693 ngx_accept_mutex_held = 0;
694 ngx_use_accept_mutex = 0;
695
696 ls = cycle->listening.elts;
697 for (i = 0; i < cycle->listening.nelts; i++) {
698
699 c = ls[i].connection;
700
701 if (c) {
702 if (c->read->active) {
703 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
704 ngx_del_conn(c, NGX_CLOSE_EVENT);
705
706 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
707
708 /*
709 * it seems that Linux-2.6.x OpenVZ sends events
710 * for closed shared listening sockets unless
711 * the events was explicitly deleted
712 */
713
714 ngx_del_event(c->read, NGX_READ_EVENT, 0);
715
716 } else {
717 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
718 }
719 }
720
721 ngx_free_connection(c);
722
723 c->fd = (ngx_socket_t) -1;
724 }
725
726 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
727 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
728
729 if (ngx_close_socket(ls[i].fd) == -1) {
730 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
731 ngx_close_socket_n " %V failed", &ls[i].addr_text);
732 }
733
734 #if (NGX_HAVE_UNIX_DOMAIN)
735
736 if (ls[i].sockaddr->sa_family == AF_UNIX
737 && ngx_process <= NGX_PROCESS_MASTER
738 && ngx_new_binary == 0)
739 {
740 u_char *name = ls[i].addr_text.data + sizeof("unix:") - 1;
741
742 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
743 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
744 ngx_delete_file_n " %s failed", name);
745 }
746 }
747
748 #endif
749
750 ls[i].fd = (ngx_socket_t) -1;
751 }
752
753 cycle->listening.nelts = 0;
754 }
755
756
757 ngx_connection_t *
758 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
759 {
760 ngx_uint_t instance;
761 ngx_event_t *rev, *wev;
762 ngx_connection_t *c;
763
764 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
765
766 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
767 ngx_log_error(NGX_LOG_ALERT, log, 0,
768 "the new socket has number %d, "
769 "but only %ui files are available",
770 s, ngx_cycle->files_n);
771 return NULL;
772 }
773
774 /* ngx_mutex_lock */
775
776 c = ngx_cycle->free_connections;
777
778 if (c == NULL) {
779 ngx_drain_connections();
780 c = ngx_cycle->free_connections;
781 }
782
783 if (c == NULL) {
784 ngx_log_error(NGX_LOG_ALERT, log, 0,
785 "%ui worker_connections are not enough",
786 ngx_cycle->connection_n);
787
788 /* ngx_mutex_unlock */
789
790 return NULL;
791 }
792
793 ngx_cycle->free_connections = c->data;
794 ngx_cycle->free_connection_n--;
795
796 /* ngx_mutex_unlock */
797
798 if (ngx_cycle->files) {
799 ngx_cycle->files[s] = c;
800 }
801
802 rev = c->read;
803 wev = c->write;
804
805 ngx_memzero(c, sizeof(ngx_connection_t));
806
807 c->read = rev;
808 c->write = wev;
809 c->fd = s;
810 c->log = log;
811
812 instance = rev->instance;
813
814 ngx_memzero(rev, sizeof(ngx_event_t));
815 ngx_memzero(wev, sizeof(ngx_event_t));
816
817 rev->instance = !instance;
818 wev->instance = !instance;
819
820 rev->index = NGX_INVALID_INDEX;
821 wev->index = NGX_INVALID_INDEX;
822
823 rev->data = c;
824 wev->data = c;
825
826 wev->write = 1;
827
828 return c;
829 }
830
831
832 void
833 ngx_free_connection(ngx_connection_t *c)
834 {
835 /* ngx_mutex_lock */
836
837 c->data = ngx_cycle->free_connections;
838 ngx_cycle->free_connections = c;
839 ngx_cycle->free_connection_n++;
840
841 /* ngx_mutex_unlock */
842
843 if (ngx_cycle->files) {
844 ngx_cycle->files[c->fd] = NULL;
845 }
846 }
847
848
849 void
850 ngx_close_connection(ngx_connection_t *c)
851 {
852 ngx_err_t err;
853 ngx_uint_t log_error, level;
854 ngx_socket_t fd;
855
856 if (c->fd == -1) {
857 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
858 return;
859 }
860
861 if (c->read->timer_set) {
862 ngx_del_timer(c->read);
863 }
864
865 if (c->write->timer_set) {
866 ngx_del_timer(c->write);
867 }
868
869 if (ngx_del_conn) {
870 ngx_del_conn(c, NGX_CLOSE_EVENT);
871
872 } else {
873 if (c->read->active || c->read->disabled) {
874 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
875 }
876
877 if (c->write->active || c->write->disabled) {
878 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
879 }
880 }
881
882 #if (NGX_THREADS)
883
884 /*
885 * we have to clean the connection information before the closing
886 * because another thread may reopen the same file descriptor
887 * before we clean the connection
888 */
889
890 ngx_mutex_lock(ngx_posted_events_mutex);
891
892 if (c->read->prev) {
893 ngx_delete_posted_event(c->read);
894 }
895
896 if (c->write->prev) {
897 ngx_delete_posted_event(c->write);
898 }
899
900 c->read->closed = 1;
901 c->write->closed = 1;
902
903 ngx_unlock(&c->lock);
904 c->read->locked = 0;
905 c->write->locked = 0;
906
907 ngx_mutex_unlock(ngx_posted_events_mutex);
908
909 #else
910
911 if (c->read->prev) {
912 ngx_delete_posted_event(c->read);
913 }
914
915 if (c->write->prev) {
916 ngx_delete_posted_event(c->write);
917 }
918
919 c->read->closed = 1;
920 c->write->closed = 1;
921
922 #endif
923
924 ngx_reusable_connection(c, 0);
925
926 log_error = c->log_error;
927
928 ngx_free_connection(c);
929
930 fd = c->fd;
931 c->fd = (ngx_socket_t) -1;
932
933 if (ngx_close_socket(fd) == -1) {
934
935 err = ngx_socket_errno;
936
937 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
938
939 switch (log_error) {
940
941 case NGX_ERROR_INFO:
942 level = NGX_LOG_INFO;
943 break;
944
945 case NGX_ERROR_ERR:
946 level = NGX_LOG_ERR;
947 break;
948
949 default:
950 level = NGX_LOG_CRIT;
951 }
952
953 } else {
954 level = NGX_LOG_CRIT;
955 }
956
957 /* we use ngx_cycle->log because c->log was in c->pool */
958
959 ngx_log_error(level, ngx_cycle->log, err,
960 ngx_close_socket_n " %d failed", fd);
961 }
962 }
963
964
965 void
966 ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable)
967 {
968 ngx_log_debug1(NGX_LOG_DEBUG_CORE, c->log, 0,
969 "reusable connection: %ui", reusable);
970
971 if (c->reusable) {
972 ngx_queue_remove(&c->queue);
973
974 #if (NGX_STAT_STUB)
975 (void) ngx_atomic_fetch_add(ngx_stat_waiting, -1);
976 #endif
977 }
978
979 c->reusable = reusable;
980
981 if (reusable) {
982 /* need cast as ngx_cycle is volatile */
983
984 ngx_queue_insert_head(
985 (ngx_queue_t *) &ngx_cycle->reusable_connections_queue, &c->queue);
986
987 #if (NGX_STAT_STUB)
988 (void) ngx_atomic_fetch_add(ngx_stat_waiting, 1);
989 #endif
990 }
991 }
992
993
994 static void
995 ngx_drain_connections(void)
996 {
997 ngx_int_t i;
998 ngx_queue_t *q;
999 ngx_connection_t *c;
1000
1001 for (i = 0; i < 32; i++) {
1002 if (ngx_queue_empty(&ngx_cycle->reusable_connections_queue)) {
1003 break;
1004 }
1005
1006 q = ngx_queue_last(&ngx_cycle->reusable_connections_queue);
1007 c = ngx_queue_data(q, ngx_connection_t, queue);
1008
1009 ngx_log_debug0(NGX_LOG_DEBUG_CORE, c->log, 0,
1010 "reusing connection");
1011
1012 c->close = 1;
1013 c->read->handler(c->read);
1014 }
1015 }
1016
1017
1018 ngx_int_t
1019 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
1020 ngx_uint_t port)
1021 {
1022 socklen_t len;
1023 ngx_uint_t addr;
1024 u_char sa[NGX_SOCKADDRLEN];
1025 struct sockaddr_in *sin;
1026 #if (NGX_HAVE_INET6)
1027 ngx_uint_t i;
1028 struct sockaddr_in6 *sin6;
1029 #endif
1030
1031 switch (c->local_sockaddr->sa_family) {
1032
1033 #if (NGX_HAVE_INET6)
1034 case AF_INET6:
1035 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
1036
1037 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
1038 addr |= sin6->sin6_addr.s6_addr[i];
1039 }
1040
1041 break;
1042 #endif
1043
1044 default: /* AF_INET */
1045 sin = (struct sockaddr_in *) c->local_sockaddr;
1046 addr = sin->sin_addr.s_addr;
1047 break;
1048 }
1049
1050 if (addr == 0) {
1051
1052 len = NGX_SOCKADDRLEN;
1053
1054 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
1055 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
1056 return NGX_ERROR;
1057 }
1058
1059 c->local_sockaddr = ngx_palloc(c->pool, len);
1060 if (c->local_sockaddr == NULL) {
1061 return NGX_ERROR;
1062 }
1063
1064 ngx_memcpy(c->local_sockaddr, &sa, len);
1065 }
1066
1067 if (s == NULL) {
1068 return NGX_OK;
1069 }
1070
1071 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
1072
1073 return NGX_OK;
1074 }
1075
1076
1077 ngx_int_t
1078 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
1079 {
1080 ngx_uint_t level;
1081
1082 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
1083
1084 if ((err == NGX_ECONNRESET
1085 #if (NGX_WIN32)
1086 || err == NGX_ECONNABORTED
1087 #endif
1088 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
1089 {
1090 return 0;
1091 }
1092
1093 #if (NGX_SOLARIS)
1094 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
1095 return 0;
1096 }
1097 #endif
1098
1099 if (err == 0
1100 || err == NGX_ECONNRESET
1101 #if (NGX_WIN32)
1102 || err == NGX_ECONNABORTED
1103 #else
1104 || err == NGX_EPIPE
1105 #endif
1106 || err == NGX_ENOTCONN
1107 || err == NGX_ETIMEDOUT
1108 || err == NGX_ECONNREFUSED
1109 || err == NGX_ENETDOWN
1110 || err == NGX_ENETUNREACH
1111 || err == NGX_EHOSTDOWN
1112 || err == NGX_EHOSTUNREACH)
1113 {
1114 switch (c->log_error) {
1115
1116 case NGX_ERROR_IGNORE_EINVAL:
1117 case NGX_ERROR_IGNORE_ECONNRESET:
1118 case NGX_ERROR_INFO:
1119 level = NGX_LOG_INFO;
1120 break;
1121
1122 default:
1123 level = NGX_LOG_ERR;
1124 }
1125
1126 } else {
1127 level = NGX_LOG_ALERT;
1128 }
1129
1130 ngx_log_error(level, c->log, err, text);
1131
1132 return NGX_ERROR;
1133 }
Tomato firmware and modifications.