|
0
|
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
|
|
70
|
15 ngx_listening_t *
|
|
|
16 ngx_listening_inet_stream_socket(ngx_conf_t *cf, in_addr_t addr, in_port_t port)
|
|
0
|
17 {
|
|
|
18 size_t len;
|
|
|
19 ngx_listening_t *ls;
|
|
28
|
20 struct sockaddr_in *sin;
|
|
0
|
21
|
|
50
|
22 ls = ngx_array_push(&cf->cycle->listening);
|
|
|
23 if (ls == NULL) {
|
|
0
|
24 return NULL;
|
|
|
25 }
|
|
|
26
|
|
|
27 ngx_memzero(ls, sizeof(ngx_listening_t));
|
|
|
28
|
|
50
|
29 sin = ngx_pcalloc(cf->pool, sizeof(struct sockaddr_in));
|
|
|
30 if (sin == NULL) {
|
|
0
|
31 return NULL;
|
|
|
32 }
|
|
|
33
|
|
28
|
34 sin->sin_family = AF_INET;
|
|
|
35 sin->sin_addr.s_addr = addr;
|
|
|
36 sin->sin_port = htons(port);
|
|
0
|
37
|
|
10
|
38
|
|
|
39 ls->addr_text.data = ngx_palloc(cf->pool,
|
|
|
40 INET_ADDRSTRLEN - 1 + sizeof(":65535") - 1);
|
|
|
41 if (ls->addr_text.data == NULL) {
|
|
0
|
42 return NULL;
|
|
|
43 }
|
|
|
44
|
|
|
45 len = ngx_inet_ntop(AF_INET, &addr, ls->addr_text.data, INET_ADDRSTRLEN);
|
|
10
|
46
|
|
|
47 ls->addr_text.len = ngx_sprintf(ls->addr_text.data + len, ":%d", port)
|
|
|
48 - ls->addr_text.data;
|
|
|
49
|
|
0
|
50 ls->fd = (ngx_socket_t) -1;
|
|
|
51 ls->family = AF_INET;
|
|
|
52 ls->type = SOCK_STREAM;
|
|
28
|
53 ls->sockaddr = (struct sockaddr *) sin;
|
|
0
|
54 ls->socklen = sizeof(struct sockaddr_in);
|
|
|
55 ls->addr = offsetof(struct sockaddr_in, sin_addr);
|
|
|
56 ls->addr_text_max_len = INET_ADDRSTRLEN;
|
|
|
57
|
|
|
58 return ls;
|
|
|
59 }
|
|
|
60
|
|
|
61
|
|
70
|
62 ngx_int_t
|
|
|
63 ngx_set_inherited_sockets(ngx_cycle_t *cycle)
|
|
0
|
64 {
|
|
72
|
65 size_t len;
|
|
|
66 ngx_uint_t i;
|
|
|
67 ngx_listening_t *ls;
|
|
|
68 struct sockaddr_in *sin;
|
|
|
69 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
70 socklen_t aflen;
|
|
|
71 struct accept_filter_arg af;
|
|
|
72 #endif
|
|
|
73 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
74 socklen_t tlen;
|
|
|
75 int timeout;
|
|
|
76 #endif
|
|
0
|
77
|
|
|
78 ls = cycle->listening.elts;
|
|
|
79 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
80
|
|
|
81 /* AF_INET only */
|
|
|
82
|
|
|
83 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
|
|
|
84 if (ls[i].sockaddr == NULL) {
|
|
|
85 return NGX_ERROR;
|
|
|
86 }
|
|
|
87
|
|
|
88 ls[i].socklen = sizeof(struct sockaddr_in);
|
|
|
89 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
|
|
|
90 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
|
|
|
91 "getsockname() of the inherited "
|
|
|
92 "socket #%d failed", ls[i].fd);
|
|
|
93 ls[i].ignore = 1;
|
|
|
94 continue;
|
|
|
95 }
|
|
|
96
|
|
28
|
97 sin = (struct sockaddr_in *) ls[i].sockaddr;
|
|
0
|
98
|
|
28
|
99 if (sin->sin_family != AF_INET) {
|
|
0
|
100 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
|
|
|
101 "the inherited socket #%d has "
|
|
|
102 "unsupported family", ls[i].fd);
|
|
|
103 ls[i].ignore = 1;
|
|
|
104 continue;
|
|
|
105 }
|
|
10
|
106
|
|
0
|
107 ls[i].addr_text_max_len = INET_ADDRSTRLEN;
|
|
|
108
|
|
10
|
109 ls[i].addr_text.data = ngx_palloc(cycle->pool, INET_ADDRSTRLEN - 1
|
|
|
110 + sizeof(":65535") - 1);
|
|
0
|
111 if (ls[i].addr_text.data == NULL) {
|
|
|
112 return NGX_ERROR;
|
|
|
113 }
|
|
|
114
|
|
28
|
115 ls[i].family = sin->sin_family;
|
|
10
|
116 len = ngx_sock_ntop(ls[i].family, ls[i].sockaddr,
|
|
|
117 ls[i].addr_text.data, INET_ADDRSTRLEN);
|
|
|
118 if (len == 0) {
|
|
0
|
119 return NGX_ERROR;
|
|
|
120 }
|
|
10
|
121
|
|
|
122 ls[i].addr_text.len = ngx_sprintf(ls[i].addr_text.data + len, ":%d",
|
|
28
|
123 ntohs(sin->sin_port))
|
|
10
|
124 - ls[i].addr_text.data;
|
|
72
|
125
|
|
86
|
126 ls[i].backlog = -1;
|
|
|
127
|
|
72
|
128 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
|
|
|
129
|
|
|
130 ngx_memzero(&af, sizeof(struct accept_filter_arg));
|
|
|
131 aflen = sizeof(struct accept_filter_arg);
|
|
|
132
|
|
|
133 if (getsockopt(ls[i].fd, SOL_SOCKET, SO_ACCEPTFILTER, &af, &aflen)
|
|
|
134 == -1)
|
|
|
135 {
|
|
|
136 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
|
|
|
137 "getsockopt(SO_ACCEPTFILTER) for %V failed, ignored",
|
|
|
138 &ls[i].addr_text);
|
|
|
139 continue;
|
|
|
140 }
|
|
|
141
|
|
|
142 if (aflen < sizeof(struct accept_filter_arg) || af.af_name[0] == '\0') {
|
|
|
143 continue;
|
|
|
144 }
|
|
|
145
|
|
|
146 ls[i].accept_filter = ngx_palloc(cycle->pool, 16);
|
|
|
147 if (ls[i].accept_filter == NULL) {
|
|
|
148 return NGX_ERROR;
|
|
|
149 }
|
|
|
150
|
|
|
151 (void) ngx_cpystrn((u_char *) ls[i].accept_filter,
|
|
|
152 (u_char *) af.af_name, 16);
|
|
|
153 #endif
|
|
|
154
|
|
|
155 #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
|
|
|
156
|
|
|
157 timeout = 0;
|
|
|
158 tlen = sizeof(int);
|
|
|
159
|
|
|
160 if (getsockopt(ls[i].fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, &tlen)
|
|
|
161 == -1)
|
|
|
162 {
|
|
|
163 ngx_log_error(NGX_LOG_NOTICE, cycle->log, ngx_errno,
|
|
|
164 "getsockopt(TCP_DEFER_ACCEPT) for %V failed, ignored",
|
|
|
165 &ls[i].addr_text);
|
|
|
166 continue;
|
|
|
167 }
|
|
|
168
|
|
|
169 if (tlen < sizeof(int) || timeout == 0) {
|
|
|
170 continue;
|
|
|
171 }
|
|
|
172
|
|
|
173 ls[i].deferred_accept = 1;
|
|
|
174 #endif
|
|
0
|
175 }
|
|
|
176
|
|
|
177 return NGX_OK;
|
|
|
178 }
|
|
|
179
|
|
|
180
|
|
70
|
181 ngx_int_t
|
|
|
182 ngx_open_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
183 {
|
|
|
184 ngx_uint_t tries, failed, reuseaddr, i;
|
|
|
185 ngx_err_t err;
|
|
|
186 ngx_log_t *log;
|
|
|
187 ngx_socket_t s;
|
|
|
188 ngx_listening_t *ls;
|
|
|
189
|
|
|
190 reuseaddr = 1;
|
|
|
191 #if (NGX_SUPPRESS_WARN)
|
|
|
192 failed = 0;
|
|
|
193 #endif
|
|
|
194
|
|
|
195 log = cycle->log;
|
|
|
196
|
|
|
197 /* TODO: tries configurable */
|
|
|
198
|
|
|
199 for (tries = /* STUB */ 5; tries; tries--) {
|
|
|
200 failed = 0;
|
|
|
201
|
|
|
202 /* for each listening socket */
|
|
|
203
|
|
|
204 ls = cycle->listening.elts;
|
|
|
205 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
206
|
|
|
207 if (ls[i].ignore) {
|
|
|
208 continue;
|
|
|
209 }
|
|
|
210
|
|
|
211 if (ls[i].fd != -1) {
|
|
|
212 continue;
|
|
|
213 }
|
|
|
214
|
|
|
215 if (ls[i].inherited) {
|
|
|
216
|
|
|
217 /* TODO: close on exit */
|
|
|
218 /* TODO: nonblocking */
|
|
|
219 /* TODO: deferred accept */
|
|
|
220
|
|
|
221 continue;
|
|
|
222 }
|
|
|
223
|
|
28
|
224 s = ngx_socket(ls[i].family, ls[i].type, 0);
|
|
0
|
225
|
|
|
226 if (s == -1) {
|
|
|
227 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
228 ngx_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
229 return NGX_ERROR;
|
|
|
230 }
|
|
|
231
|
|
10
|
232 #if (NGX_WIN32)
|
|
0
|
233 /*
|
|
|
234 * Winsock assignes a socket number divisible by 4
|
|
|
235 * so to find a connection we divide a socket number by 4.
|
|
|
236 */
|
|
|
237
|
|
|
238 if (s % 4) {
|
|
|
239 ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
|
|
|
240 ngx_socket_n " created socket %d", s);
|
|
|
241 return NGX_ERROR;
|
|
|
242 }
|
|
|
243 #endif
|
|
|
244
|
|
|
245 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
|
|
|
246 (const void *) &reuseaddr, sizeof(int)) == -1) {
|
|
|
247 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
248 "setsockopt(SO_REUSEADDR) %V failed",
|
|
|
249 &ls[i].addr_text);
|
|
0
|
250 return NGX_ERROR;
|
|
|
251 }
|
|
|
252
|
|
|
253 /* TODO: close on exit */
|
|
|
254
|
|
|
255 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
|
|
|
256 if (ngx_nonblocking(s) == -1) {
|
|
|
257 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
258 ngx_nonblocking_n " %V failed",
|
|
|
259 &ls[i].addr_text);
|
|
0
|
260 return NGX_ERROR;
|
|
|
261 }
|
|
|
262 }
|
|
|
263
|
|
|
264 #if 0
|
|
|
265 if (ls[i].nonblocking) {
|
|
|
266 if (ngx_nonblocking(s) == -1) {
|
|
|
267 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
268 ngx_nonblocking_n " %V failed",
|
|
|
269 &ls[i].addr_text);
|
|
0
|
270 return NGX_ERROR;
|
|
|
271 }
|
|
|
272 }
|
|
|
273 #endif
|
|
|
274
|
|
|
275 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
|
|
|
276 err = ngx_socket_errno;
|
|
|
277 ngx_log_error(NGX_LOG_EMERG, log, err,
|
|
10
|
278 "bind() to %V failed", &ls[i].addr_text);
|
|
0
|
279
|
|
|
280 if (err != NGX_EADDRINUSE)
|
|
|
281 return NGX_ERROR;
|
|
|
282
|
|
|
283 if (ngx_close_socket(s) == -1)
|
|
|
284 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
285 ngx_close_socket_n " %V failed",
|
|
|
286 &ls[i].addr_text);
|
|
0
|
287
|
|
|
288 failed = 1;
|
|
|
289 continue;
|
|
|
290 }
|
|
|
291
|
|
|
292 if (listen(s, ls[i].backlog) == -1) {
|
|
|
293 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
10
|
294 "listen() to %V failed", &ls[i].addr_text);
|
|
0
|
295 return NGX_ERROR;
|
|
|
296 }
|
|
|
297
|
|
|
298 /* TODO: deferred accept */
|
|
|
299
|
|
|
300 ls[i].fd = s;
|
|
|
301 }
|
|
|
302
|
|
|
303 if (!failed)
|
|
|
304 break;
|
|
|
305
|
|
|
306 /* TODO: delay configurable */
|
|
|
307
|
|
|
308 ngx_log_error(NGX_LOG_NOTICE, log, 0,
|
|
|
309 "try again to bind() after 500ms");
|
|
|
310 ngx_msleep(500);
|
|
|
311 }
|
|
|
312
|
|
|
313 if (failed) {
|
|
26
|
314 ngx_log_error(NGX_LOG_EMERG, log, 0, "still could not bind()");
|
|
0
|
315 return NGX_ERROR;
|
|
|
316 }
|
|
|
317
|
|
|
318 return NGX_OK;
|
|
|
319 }
|
|
|
320
|
|
|
321
|
|
70
|
322 void
|
|
|
323 ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
0
|
324 {
|
|
|
325 ngx_uint_t i;
|
|
|
326 ngx_socket_t fd;
|
|
|
327 ngx_listening_t *ls;
|
|
|
328
|
|
|
329 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
330 return;
|
|
|
331 }
|
|
|
332
|
|
|
333 ngx_accept_mutex_held = 0;
|
|
|
334 ngx_accept_mutex = NULL;
|
|
|
335
|
|
|
336 ls = cycle->listening.elts;
|
|
|
337 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
338 fd = ls[i].fd;
|
|
|
339
|
|
10
|
340 #if (NGX_WIN32)
|
|
0
|
341 /*
|
|
|
342 * Winsock assignes a socket number divisible by 4
|
|
|
343 * so to find a connection we divide a socket number by 4.
|
|
|
344 */
|
|
|
345
|
|
|
346 fd /= 4;
|
|
|
347 #endif
|
|
|
348
|
|
|
349 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
350 if (cycle->connections[fd].read->active) {
|
|
|
351 ngx_del_conn(&cycle->connections[fd], NGX_CLOSE_EVENT);
|
|
|
352 }
|
|
|
353
|
|
|
354 } else {
|
|
|
355 if (cycle->read_events[fd].active) {
|
|
|
356 ngx_del_event(&cycle->read_events[fd],
|
|
|
357 NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
358 }
|
|
|
359 }
|
|
|
360
|
|
16
|
361 if (ngx_close_socket(fd) == -1) {
|
|
0
|
362 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
10
|
363 ngx_close_socket_n " %V failed", &ls[i].addr_text);
|
|
0
|
364 }
|
|
|
365
|
|
|
366 cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
367 }
|
|
|
368 }
|
|
|
369
|
|
|
370
|
|
70
|
371 void
|
|
|
372 ngx_close_connection(ngx_connection_t *c)
|
|
0
|
373 {
|
|
|
374 ngx_socket_t fd;
|
|
|
375
|
|
28
|
376 if (c->fd == -1) {
|
|
0
|
377 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
378 return;
|
|
|
379 }
|
|
|
380
|
|
|
381 if (c->read->timer_set) {
|
|
|
382 ngx_del_timer(c->read);
|
|
|
383 }
|
|
|
384
|
|
|
385 if (c->write->timer_set) {
|
|
|
386 ngx_del_timer(c->write);
|
|
|
387 }
|
|
|
388
|
|
|
389 if (ngx_del_conn) {
|
|
|
390 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
391
|
|
|
392 } else {
|
|
|
393 if (c->read->active || c->read->disabled) {
|
|
|
394 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
395 }
|
|
|
396
|
|
|
397 if (c->write->active || c->write->disabled) {
|
|
|
398 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
399 }
|
|
|
400 }
|
|
|
401
|
|
|
402 #if (NGX_THREADS)
|
|
|
403
|
|
|
404 /*
|
|
|
405 * we have to clean the connection information before the closing
|
|
|
406 * because another thread may reopen the same file descriptor
|
|
|
407 * before we clean the connection
|
|
|
408 */
|
|
|
409
|
|
|
410 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_OK) {
|
|
|
411
|
|
|
412 if (c->read->prev) {
|
|
|
413 ngx_delete_posted_event(c->read);
|
|
|
414 }
|
|
|
415
|
|
|
416 if (c->write->prev) {
|
|
|
417 ngx_delete_posted_event(c->write);
|
|
|
418 }
|
|
|
419
|
|
|
420 c->read->closed = 1;
|
|
|
421 c->write->closed = 1;
|
|
|
422
|
|
|
423 if (c->single_connection) {
|
|
|
424 ngx_unlock(&c->lock);
|
|
|
425 c->read->locked = 0;
|
|
|
426 c->write->locked = 0;
|
|
|
427 }
|
|
|
428
|
|
|
429 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
|
430 }
|
|
|
431
|
|
|
432 #else
|
|
|
433
|
|
|
434 if (c->read->prev) {
|
|
|
435 ngx_delete_posted_event(c->read);
|
|
|
436 }
|
|
|
437
|
|
|
438 if (c->write->prev) {
|
|
|
439 ngx_delete_posted_event(c->write);
|
|
|
440 }
|
|
|
441
|
|
|
442 c->read->closed = 1;
|
|
|
443 c->write->closed = 1;
|
|
|
444
|
|
|
445 #endif
|
|
|
446
|
|
|
447 fd = c->fd;
|
|
|
448 c->fd = (ngx_socket_t) -1;
|
|
|
449 c->data = NULL;
|
|
|
450
|
|
|
451 if (ngx_close_socket(fd) == -1) {
|
|
|
452
|
|
|
453 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
454
|
|
|
455 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_socket_errno,
|
|
|
456 ngx_close_socket_n " failed");
|
|
|
457 }
|
|
|
458 }
|
|
|
459
|
|
|
460
|
|
70
|
461 ngx_int_t
|
|
|
462 ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
0
|
463 {
|
|
|
464 ngx_uint_t level;
|
|
|
465
|
|
|
466 if (err == NGX_ECONNRESET
|
|
|
467 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
468 {
|
|
|
469 return 0;
|
|
|
470 }
|
|
|
471
|
|
86
|
472 if (err == 0
|
|
|
473 || err == NGX_ECONNRESET
|
|
10
|
474 #if !(NGX_WIN32)
|
|
0
|
475 || err == NGX_EPIPE
|
|
|
476 #endif
|
|
|
477 || err == NGX_ENOTCONN
|
|
|
478 || err == NGX_ECONNREFUSED
|
|
|
479 || err == NGX_EHOSTUNREACH)
|
|
|
480 {
|
|
|
481
|
|
|
482 switch (c->log_error) {
|
|
|
483
|
|
|
484 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
485 case NGX_ERROR_INFO:
|
|
|
486 level = NGX_LOG_INFO;
|
|
|
487 break;
|
|
|
488
|
|
|
489 case NGX_ERROR_ERR:
|
|
|
490 level = NGX_LOG_ERR;
|
|
|
491 break;
|
|
|
492
|
|
|
493 default:
|
|
|
494 level = NGX_LOG_CRIT;
|
|
|
495 }
|
|
|
496
|
|
|
497 } else {
|
|
|
498 level = NGX_LOG_CRIT;
|
|
|
499 }
|
|
|
500
|
|
|
501 ngx_log_error(level, c->log, err, text);
|
|
|
502
|
|
|
503 return NGX_ERROR;
|
|
|
504 }
|
