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