1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_event.h>
10
11
12 ngx_os_io_t ngx_io;
13
14
15 ngx_listening_t *
16 ngx_create_listening(ngx_conf_t *cf, void *sockaddr, socklen_t socklen)
17 {
18 ngx_listening_t *ls;
19 struct sockaddr *sa;
20 u_char text[NGX_SOCKADDR_STRLEN];
21
22 ls = ngx_array_push(&cf->cycle->listening);
23 if (ls == NULL) {
24 return NULL;
25 }
26
27 ngx_memzero(ls, sizeof(ngx_listening_t));
28
29 sa = ngx_palloc(cf->pool, socklen);
30 if (sa == NULL) {
31 return NULL;
32 }
33
34 ngx_memcpy(sa, sockaddr, socklen);
35
36 ls->sockaddr = sa;
37 ls->socklen = socklen;
38
39 ls->addr_text.len = ngx_sock_ntop(sa, text, NGX_SOCKADDR_STRLEN, 1);
40
41 ls->addr_text.data = ngx_pnalloc(cf->pool, ls->addr_text.len);
42 if (ls->addr_text.data == NULL) {
43 return NULL;
44 }
45
46 ngx_memcpy(ls->addr_text.data, text, ls->addr_text.len);
47
48 ls->fd = (ngx_socket_t) -1;
49 ls->type = SOCK_STREAM;
50
51 switch (ls->sockaddr->sa_family) {
52 #if (NGX_HAVE_INET6)
53 case AF_INET6:
54 ls->addr_text_max_len = NGX_INET6_ADDRSTRLEN;
55 break;
56 #endif
57 case AF_INET:
58 ls->addr_text_max_len = NGX_INET_ADDRSTRLEN;
59 break;
60 default:
61 ls->addr_text_max_len = NGX_SOCKADDR_STRLEN;
62 break;
63 }
64
65 ls->backlog = NGX_LISTEN_BACKLOG;
66 ls->rcvbuf = -1;
67 ls->sndbuf = -1;
68
69 return ls;
70 }
71
72
73 ngx_int_t
74 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
75 {
76 size_t len;
77 ngx_uint_t i;
78 ngx_listening_t *ls;
79 socklen_t olen;
80 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
81 ngx_err_t err;
82 struct accept_filter_arg af;
83 #endif
84 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
85 int timeout;
86 #endif
87
88 ls = cycle->listening.elts;
89 for (i = 0; i < cycle->listening.nelts; i++) {
90
91 /* AF_INET only */
92
93 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
94 if (ls[i].sockaddr == NULL) {
95 return NGX_ERROR;
96 }
97
98 ls[i].socklen = sizeof(struct sockaddr_in);
99 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
100 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
101 "getsockname() of the inherited "
102 "socket #%d failed", ls[i].fd);
103 ls[i].ignore = 1;
104 continue;
105 }
106
107 switch (ls[i].sockaddr->sa_family) {
108
109 #if (NGX_HAVE_INET6)
110 case AF_INET6:
111 ls[i].addr_text_max_len = NGX_INET6_ADDRSTRLEN;
112 break;
113 #endif
114
115 case AF_INET:
116 ls[i].addr_text_max_len = NGX_INET_ADDRSTRLEN;
117 break;
118
119 default:
120 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
121 "the inherited socket #%d has "
122 "an unsupported protocol family", ls[i].fd);
123 ls[i].ignore = 1;
124 continue;
125 }
126
127 len = ls[i].addr_text_max_len + sizeof(":65535") - 1;
128
129 ls[i].addr_text.data = ngx_pnalloc(cycle->pool, len);
130 if (ls[i].addr_text.data == NULL) {
131 return NGX_ERROR;
132 }
133
134 len = ngx_sock_ntop(ls[i].sockaddr, ls[i].addr_text.data, len, 1);
135 if (len == 0) {
136 return NGX_ERROR;
137 }
138
139 ls[i].addr_text.len = len;
140
141 ls[i].backlog = NGX_LISTEN_BACKLOG;
142
143 olen = sizeof(int);
144
145 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF, (void *) &ls[i].rcvbuf,
146 &olen)
147 == -1)
148 {
149 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
150 "getsockopt(SO_RCVBUF) %V failed, ignored",
151 &ls[i].addr_text);
152
153 ls[i].rcvbuf = -1;
154 }
155
156 olen = sizeof(int);
157
158 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF, (void *) &ls[i].sndbuf,
159 &olen)
160 == -1)
161 {
162 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
163 "getsockopt(SO_SNDBUF) %V failed, ignored",
164 &ls[i].addr_text);
165
166 ls[i].sndbuf = -1;
167 }
168
169 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
170
171 ngx_memzero(&af, sizeof(struct accept_filter_arg));
172 olen = sizeof(struct accept_filter_arg);
173
174 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &olen)
175 == -1)
176 {
177 err = ngx_errno;
178
179 if (err == NGX_EINVAL) {
180 continue;
181 }
182
183 ngx_log_error(NGX_LOG_NOTICE, cycle->log, err,
184 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
185 &ls[i].addr_text);
186 continue;
187 }
188
189 if (olen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
190 continue;
191 }
192
193 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
194 if (ls[i].accept_filter == NULL) {
195 return NGX_ERROR;
196 }
197
198 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
199 (u_char *) af.af_name, 16);
200 #endif
201
202 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
203
204 timeout = 0;
205 olen = sizeof(int);
206
207 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &olen)
208 == -1)
209 {
210 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
211 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
212 &ls[i].addr_text);
213 continue;
214 }
215
216 if (olen < sizeof(int) || timeout == 0) {
217 continue;
218 }
219
220 ls[i].deferred_accept = 1;
221 #endif
222 }
223
224 return NGX_OK;
225 }
226
227
228 ngx_int_t
229 ngx_open_listening_sockets(ngx_cycle_t *cycle)
230 {
231 int reuseaddr;
232 ngx_uint_t i, tries, failed;
233 ngx_err_t err;
234 ngx_log_t *log;
235 ngx_socket_t s;
236 ngx_listening_t *ls;
237
238 reuseaddr = 1;
239 #if (NGX_SUPPRESS_WARN)
240 failed = 0;
241 #endif
242
243 log = cycle->log;
244
245 /* TODO: configurable try number */
246
247 for (tries = 5; tries; tries--) {
248 failed = 0;
249
250 /* for each listening socket */
251
252 ls = cycle->listening.elts;
253 for (i = 0; i < cycle->listening.nelts; i++) {
254
255 if (ls[i].ignore) {
256 continue;
257 }
258
259 if (ls[i].fd != -1) {
260 continue;
261 }
262
263 if (ls[i].inherited) {
264
265 /* TODO: close on exit */
266 /* TODO: nonblocking */
267 /* TODO: deferred accept */
268
269 continue;
270 }
271
272 s = ngx_socket(ls[i].sockaddr->sa_family, ls[i].type, 0);
273
274 if (s == -1) {
275 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
276 ngx_socket_n " %V failed", &ls[i].addr_text);
277 return NGX_ERROR;
278 }
279
280 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
281 (const void *) &reuseaddr, sizeof(int))
282 == -1)
283 {
284 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
285 "setsockopt(SO_REUSEADDR) %V failed",
286 &ls[i].addr_text);
287
288 if (ngx_close_socket(s) == -1) {
289 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
290 ngx_close_socket_n " %V failed",
291 &ls[i].addr_text);
292 }
293
294 return NGX_ERROR;
295 }
296
297 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
298
299 if (ls[i].sockaddr->sa_family == AF_INET6 && ls[i].ipv6only) {
300 int ipv6only;
301
302 ipv6only = (ls[i].ipv6only == 1);
303
304 if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
305 (const void *) &ipv6only, sizeof(int))
306 == -1)
307 {
308 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
309 "setsockopt(IPV6_V6ONLY) %V failed, ignored",
310 &ls[i].addr_text);
311 }
312 }
313 #endif
314 /* TODO: close on exit */
315
316 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
317 if (ngx_nonblocking(s) == -1) {
318 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
319 ngx_nonblocking_n " %V failed",
320 &ls[i].addr_text);
321
322 if (ngx_close_socket(s) == -1) {
323 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
324 ngx_close_socket_n " %V failed",
325 &ls[i].addr_text);
326 }
327
328 return NGX_ERROR;
329 }
330 }
331
332 ngx_log_debug2(NGX_LOG_DEBUG_CORE, log, 0,
333 "bind() %V #%d ", &ls[i].addr_text, s);
334
335 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
336 err = ngx_socket_errno;
337
338 if (err == NGX_EADDRINUSE && ngx_test_config) {
339 continue;
340 }
341
342 ngx_log_error(NGX_LOG_EMERG, log, err,
343 "bind() to %V failed", &ls[i].addr_text);
344
345 if (ngx_close_socket(s) == -1) {
346 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
347 ngx_close_socket_n " %V failed",
348 &ls[i].addr_text);
349 }
350
351 if (err != NGX_EADDRINUSE) {
352 return NGX_ERROR;
353 }
354
355 failed = 1;
356
357 continue;
358 }
359
360 if (listen(s, ls[i].backlog) == -1) {
361 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
362 "listen() to %V, backlog %d failed",
363 &ls[i].addr_text, ls[i].backlog);
364
365 if (ngx_close_socket(s) == -1) {
366 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
367 ngx_close_socket_n " %V failed",
368 &ls[i].addr_text);
369 }
370
371 return NGX_ERROR;
372 }
373
374 ls[i].listen = 1;
375
376 ls[i].fd = s;
377 }
378
379 if (!failed) {
380 break;
381 }
382
383 /* TODO: delay configurable */
384
385 ngx_log_error(NGX_LOG_NOTICE, log, 0,
386 "try again to bind() after 500ms");
387
388 ngx_msleep(500);
389 }
390
391 if (failed) {
392 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
393 return NGX_ERROR;
394 }
395
396 return NGX_OK;
397 }
398
399
400 void
401 ngx_configure_listening_sockets(ngx_cycle_t *cycle)
402 {
403 ngx_uint_t i;
404 ngx_listening_t *ls;
405
406 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
407 struct accept_filter_arg af;
408 #endif
409 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
410 int timeout;
411 #endif
412
413 ls = cycle->listening.elts;
414 for (i = 0; i < cycle->listening.nelts; i++) {
415
416 ls[i].log = *ls[i].logp;
417
418 if (ls[i].rcvbuf != -1) {
419 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_RCVBUF,
420 (const void *) &ls[i].rcvbuf, sizeof(int))
421 == -1)
422 {
423 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
424 "setsockopt(SO_RCVBUF, %d) %V failed, ignored",
425 ls[i].rcvbuf, &ls[i].addr_text);
426 }
427 }
428
429 if (ls[i].sndbuf != -1) {
430 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_SNDBUF,
431 (const void *) &ls[i].sndbuf, sizeof(int))
432 == -1)
433 {
434 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
435 "setsockopt(SO_SNDBUF, %d) %V failed, ignored",
436 ls[i].sndbuf, &ls[i].addr_text);
437 }
438 }
439
440 #if 0
441 if (1) {
442 int tcp_nodelay = 1;
443
444 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_NODELAY,
445 (const void *) &tcp_nodelay, sizeof(int))
446 == -1)
447 {
448 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
449 "setsockopt(TCP_NODELAY) %V failed, ignored",
450 &ls[i].addr_text);
451 }
452 }
453 #endif
454
455 if (ls[i].listen) {
456
457 /* change backlog via listen() */
458
459 if (listen(ls[i].fd, ls[i].backlog) == -1) {
460 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno,
461 "listen() to %V, backlog %d failed, ignored",
462 &ls[i].addr_text, ls[i].backlog);
463 }
464 }
465
466 /*
467 * setting deferred mode should be last operation on socket,
468 * because code may prematurely continue cycle on failure
469 */
470
471 #if (NGX_HAVE_DEFERRED_ACCEPT)
472
473 #ifdef SO_ACCEPTFILTER
474
475 if (ls[i].delete_deferred) {
476 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)
477 == -1)
478 {
479 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
480 "setsockopt(SO_ACCEPTFILTER, NULL) "
481 "for %V failed, ignored",
482 &ls[i].addr_text);
483
484 if (ls[i].accept_filter) {
485 ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
486 "could not change the accept filter "
487 "to \"%s\" for %V, ignored",
488 ls[i].accept_filter, &ls[i].addr_text);
489 }
490
491 continue;
492 }
493
494 ls[i].deferred_accept = 0;
495 }
496
497 if (ls[i].add_deferred) {
498 ngx_memzero(&af, sizeof(struct accept_filter_arg));
499 (void) ngx_cpystrn((u_char *) af.af_name,
500 (u_char *) ls[i].accept_filter, 16);
501
502 if (setsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER,
503 &af, sizeof(struct accept_filter_arg))
504 == -1)
505 {
506 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
507 "setsockopt(SO_ACCEPTFILTER, \"%s\") "
508 " for %V failed, ignored",
509 ls[i].accept_filter, &ls[i].addr_text);
510 continue;
511 }
512
513 ls[i].deferred_accept = 1;
514 }
515
516 #endif
517
518 #ifdef TCP_DEFER_ACCEPT
519
520 if (ls[i].add_deferred || ls[i].delete_deferred) {
521
522 if (ls[i].add_deferred) {
523 timeout = (int) (ls[i].post_accept_timeout / 1000);
524
525 } else {
526 timeout = 0;
527 }
528
529 if (setsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT,
530 &timeout, sizeof(int))
531 == -1)
532 {
533 ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
534 "setsockopt(TCP_DEFER_ACCEPT, %d) for %V failed, "
535 "ignored",
536 timeout, &ls[i].addr_text);
537
538 continue;
539 }
540 }
541
542 if (ls[i].add_deferred) {
543 ls[i].deferred_accept = 1;
544 }
545
546 #endif
547
548 #endif /* NGX_HAVE_DEFERRED_ACCEPT */
549 }
550
551 return;
552 }
553
554
555 void
556 ngx_close_listening_sockets(ngx_cycle_t *cycle)
557 {
558 ngx_uint_t i;
559 ngx_listening_t *ls;
560 ngx_connection_t *c;
561
562 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
563 return;
564 }
565
566 ngx_accept_mutex_held = 0;
567 ngx_use_accept_mutex = 0;
568
569 ls = cycle->listening.elts;
570 for (i = 0; i < cycle->listening.nelts; i++) {
571
572 c = ls[i].connection;
573
574 if (c) {
575 if (c->read->active) {
576 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
577 ngx_del_conn(c, NGX_CLOSE_EVENT);
578
579 } else if (ngx_event_flags & NGX_USE_EPOLL_EVENT) {
580
581 /*
582 * it seems that Linux-2.6.x OpenVZ sends events
583 * for closed shared listening sockets unless
584 * the events was explicity deleted
585 */
586
587 ngx_del_event(c->read, NGX_READ_EVENT, 0);
588
589 } else {
590 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
591 }
592 }
593
594 ngx_free_connection(c);
595
596 c->fd = (ngx_socket_t) -1;
597 }
598
599 ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
600 "close listening %V #%d ", &ls[i].addr_text, ls[i].fd);
601
602 if (ngx_close_socket(ls[i].fd) == -1) {
603 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
604 ngx_close_socket_n " %V failed", &ls[i].addr_text);
605 }
606
607 ls[i].fd = (ngx_socket_t) -1;
608 }
609 }
610
611
612 ngx_connection_t *
613 ngx_get_connection(ngx_socket_t s, ngx_log_t *log)
614 {
615 ngx_uint_t instance;
616 ngx_event_t *rev, *wev;
617 ngx_connection_t *c;
618
619 /* disable warning: Win32 SOCKET is u_int while UNIX socket is int */
620
621 if (ngx_cycle->files && (ngx_uint_t) s >= ngx_cycle->files_n) {
622 ngx_log_error(NGX_LOG_ALERT, log, 0,
623 "the new socket has number %d, "
624 "but only %ui files are available",
625 s, ngx_cycle->files_n);
626 return NULL;
627 }
628
629 /* ngx_mutex_lock */
630
631 c = ngx_cycle->free_connections;
632
633 if (c == NULL) {
634 ngx_log_error(NGX_LOG_ALERT, log, 0,
635 "%ui worker_connections are not enough",
636 ngx_cycle->connection_n);
637
638 /* ngx_mutex_unlock */
639
640 return NULL;
641 }
642
643 ngx_cycle->free_connections = c->data;
644 ngx_cycle->free_connection_n--;
645
646 /* ngx_mutex_unlock */
647
648 if (ngx_cycle->files) {
649 ngx_cycle->files[s] = c;
650 }
651
652 rev = c->read;
653 wev = c->write;
654
655 ngx_memzero(c, sizeof(ngx_connection_t));
656
657 c->read = rev;
658 c->write = wev;
659 c->fd = s;
660 c->log = log;
661
662 instance = rev->instance;
663
664 ngx_memzero(rev, sizeof(ngx_event_t));
665 ngx_memzero(wev, sizeof(ngx_event_t));
666
667 rev->instance = !instance;
668 wev->instance = !instance;
669
670 rev->index = NGX_INVALID_INDEX;
671 wev->index = NGX_INVALID_INDEX;
672
673 rev->data = c;
674 wev->data = c;
675
676 wev->write = 1;
677
678 return c;
679 }
680
681
682 void
683 ngx_free_connection(ngx_connection_t *c)
684 {
685 /* ngx_mutex_lock */
686
687 c->data = ngx_cycle->free_connections;
688 ngx_cycle->free_connections = c;
689 ngx_cycle->free_connection_n++;
690
691 /* ngx_mutex_unlock */
692
693 if (ngx_cycle->files) {
694 ngx_cycle->files[c->fd] = NULL;
695 }
696 }
697
698
699 void
700 ngx_close_connection(ngx_connection_t *c)
701 {
702 ngx_err_t err;
703 ngx_uint_t log_error, level;
704 ngx_socket_t fd;
705
706 if (c->fd == -1) {
707 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
708 return;
709 }
710
711 if (c->read->timer_set) {
712 ngx_del_timer(c->read);
713 }
714
715 if (c->write->timer_set) {
716 ngx_del_timer(c->write);
717 }
718
719 if (ngx_del_conn) {
720 ngx_del_conn(c, NGX_CLOSE_EVENT);
721
722 } else {
723 if (c->read->active || c->read->disabled) {
724 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
725 }
726
727 if (c->write->active || c->write->disabled) {
728 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
729 }
730 }
731
732 #if (NGX_THREADS)
733
734 /*
735 * we have to clean the connection information before the closing
736 * because another thread may reopen the same file descriptor
737 * before we clean the connection
738 */
739
740 ngx_mutex_lock(ngx_posted_events_mutex);
741
742 if (c->read->prev) {
743 ngx_delete_posted_event(c->read);
744 }
745
746 if (c->write->prev) {
747 ngx_delete_posted_event(c->write);
748 }
749
750 c->read->closed = 1;
751 c->write->closed = 1;
752
753 if (c->single_connection) {
754 ngx_unlock(&c->lock);
755 c->read->locked = 0;
756 c->write->locked = 0;
757 }
758
759 ngx_mutex_unlock(ngx_posted_events_mutex);
760
761 #else
762
763 if (c->read->prev) {
764 ngx_delete_posted_event(c->read);
765 }
766
767 if (c->write->prev) {
768 ngx_delete_posted_event(c->write);
769 }
770
771 c->read->closed = 1;
772 c->write->closed = 1;
773
774 #endif
775
776 log_error = c->log_error;
777
778 ngx_free_connection(c);
779
780 fd = c->fd;
781 c->fd = (ngx_socket_t) -1;
782
783 if (ngx_close_socket(fd) == -1) {
784
785 err = ngx_socket_errno;
786
787 if (err == NGX_ECONNRESET || err == NGX_ENOTCONN) {
788
789 switch (log_error) {
790
791 case NGX_ERROR_INFO:
792 level = NGX_LOG_INFO;
793 break;
794
795 case NGX_ERROR_ERR:
796 level = NGX_LOG_ERR;
797 break;
798
799 default:
800 level = NGX_LOG_CRIT;
801 }
802
803 } else {
804 level = NGX_LOG_CRIT;
805 }
806
807 /* we use ngx_cycle->log because c->log was in c->pool */
808
809 ngx_log_error(level, ngx_cycle->log, err,
810 ngx_close_socket_n " %d failed", fd);
811 }
812 }
813
814
815 ngx_int_t
816 ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
817 ngx_uint_t port)
818 {
819 socklen_t len;
820 ngx_uint_t addr;
821 u_char sa[NGX_SOCKADDRLEN];
822 struct sockaddr_in *sin;
823 #if (NGX_HAVE_INET6)
824 ngx_uint_t i;
825 struct sockaddr_in6 *sin6;
826 #endif
827
828 switch (c->local_sockaddr->sa_family) {
829
830 #if (NGX_HAVE_INET6)
831 case AF_INET6:
832 sin6 = (struct sockaddr_in6 *) c->local_sockaddr;
833
834 for (addr = 0, i = 0; addr == 0 && i < 16; i++) {
835 addr |= sin6->sin6_addr.s6_addr[i];
836 }
837
838 break;
839 #endif
840
841 default: /* AF_INET */
842 sin = (struct sockaddr_in *) c->local_sockaddr;
843 addr = sin->sin_addr.s_addr;
844 break;
845 }
846
847 if (addr == 0) {
848
849 len = NGX_SOCKADDRLEN;
850
851 if (getsockname(c->fd, (struct sockaddr *) &sa, &len) == -1) {
852 ngx_connection_error(c, ngx_socket_errno, "getsockname() failed");
853 return NGX_ERROR;
854 }
855
856 c->local_sockaddr = ngx_palloc(c->pool, len);
857 if (c->local_sockaddr == NULL) {
858 return NGX_ERROR;
859 }
860
861 c->local_socklen = len;
862 ngx_memcpy(c->local_sockaddr, &sa, len);
863 }
864
865 if (s == NULL) {
866 return NGX_OK;
867 }
868
869 s->len = ngx_sock_ntop(c->local_sockaddr, s->data, s->len, port);
870
871 return NGX_OK;
872 }
873
874
875 ngx_int_t
876 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
877 {
878 ngx_uint_t level;
879
880 /* Winsock may return NGX_ECONNABORTED instead of NGX_ECONNRESET */
881
882 if ((err == NGX_ECONNRESET
883 #if (NGX_WIN32)
884 || err == NGX_ECONNABORTED
885 #endif
886 ) && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
887 {
888 return 0;
889 }
890
891 #if (NGX_SOLARIS)
892 if (err == NGX_EINVAL && c->log_error == NGX_ERROR_IGNORE_EINVAL) {
893 return 0;
894 }
895 #endif
896
897 if (err == 0
898 || err == NGX_ECONNRESET
899 #if (NGX_WIN32)
900 || err == NGX_ECONNABORTED
901 #else
902 || err == NGX_EPIPE
903 #endif
904 || err == NGX_ENOTCONN
905 || err == NGX_ETIMEDOUT
906 || err == NGX_ECONNREFUSED
907 || err == NGX_ENETDOWN
908 || err == NGX_ENETUNREACH
909 || err == NGX_EHOSTDOWN
910 || err == NGX_EHOSTUNREACH)
911 {
912 switch (c->log_error) {
913
914 case NGX_ERROR_IGNORE_EINVAL:
915 case NGX_ERROR_IGNORE_ECONNRESET:
916 case NGX_ERROR_INFO:
917 level = NGX_LOG_INFO;
918 break;
919
920 default:
921 level = NGX_LOG_ERR;
922 }
923
924 } else {
925 level = NGX_LOG_ALERT;
926 }
927
928 ngx_log_error(level, c->log, err, text);
929
930 return NGX_ERROR;
931 }
932
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.