|
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;
|
|
|
21 struct sockaddr_in *addr_in;
|
|
|
22
|
|
|
23 if (!(ls = ngx_array_push(&cf->cycle->listening))) {
|
|
|
24 return NULL;
|
|
|
25 }
|
|
|
26
|
|
|
27 ngx_memzero(ls, sizeof(ngx_listening_t));
|
|
|
28
|
|
|
29 if (!(addr_in = ngx_pcalloc(cf->pool, sizeof(struct sockaddr_in)))) {
|
|
|
30 return NULL;
|
|
|
31 }
|
|
|
32
|
|
|
33 #if (HAVE_SIN_LEN)
|
|
|
34 addr_in->sin_len = sizeof(struct sockaddr_in);
|
|
|
35 #endif
|
|
|
36 addr_in->sin_family = AF_INET;
|
|
|
37 addr_in->sin_addr.s_addr = addr;
|
|
|
38 addr_in->sin_port = htons(port);
|
|
|
39
|
|
|
40 if (!(ls->addr_text.data = ngx_palloc(cf->pool, INET_ADDRSTRLEN + 6))) {
|
|
|
41 return NULL;
|
|
|
42 }
|
|
|
43
|
|
|
44 len = ngx_inet_ntop(AF_INET, &addr, ls->addr_text.data, INET_ADDRSTRLEN);
|
|
|
45 ls->addr_text.len = ngx_snprintf((char *) ls->addr_text.data + len,
|
|
|
46 6, ":%d", port);
|
|
|
47
|
|
|
48 ls->fd = (ngx_socket_t) -1;
|
|
|
49 ls->family = AF_INET;
|
|
|
50 ls->type = SOCK_STREAM;
|
|
|
51 ls->protocol = IPPROTO_IP;
|
|
|
52 #if (WIN32)
|
|
|
53 ls->flags = WSA_FLAG_OVERLAPPED;
|
|
|
54 #endif
|
|
|
55 ls->sockaddr = (struct sockaddr *) addr_in;
|
|
|
56 ls->socklen = sizeof(struct sockaddr_in);
|
|
|
57 ls->addr = offsetof(struct sockaddr_in, sin_addr);
|
|
|
58 ls->addr_text_max_len = INET_ADDRSTRLEN;
|
|
|
59
|
|
|
60 return ls;
|
|
|
61 }
|
|
|
62
|
|
|
63
|
|
|
64 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle)
|
|
|
65 {
|
|
|
66 ngx_uint_t i;
|
|
|
67 ngx_listening_t *ls;
|
|
|
68 struct sockaddr_in *addr_in;
|
|
|
69
|
|
|
70 ls = cycle->listening.elts;
|
|
|
71 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
72
|
|
|
73 /* AF_INET only */
|
|
|
74
|
|
|
75 ls[i].sockaddr = ngx_palloc(cycle->pool, sizeof(struct sockaddr_in));
|
|
|
76 if (ls[i].sockaddr == NULL) {
|
|
|
77 return NGX_ERROR;
|
|
|
78 }
|
|
|
79
|
|
|
80 ls[i].socklen = sizeof(struct sockaddr_in);
|
|
|
81 if (getsockname(ls[i].fd, ls[i].sockaddr, &ls[i].socklen) == -1) {
|
|
|
82 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
|
|
|
83 "getsockname() of the inherited "
|
|
|
84 "socket #%d failed", ls[i].fd);
|
|
|
85 ls[i].ignore = 1;
|
|
|
86 continue;
|
|
|
87 }
|
|
|
88
|
|
|
89 addr_in = (struct sockaddr_in *) ls[i].sockaddr;
|
|
|
90
|
|
|
91 if (addr_in->sin_family != AF_INET) {
|
|
|
92 ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_socket_errno,
|
|
|
93 "the inherited socket #%d has "
|
|
|
94 "unsupported family", ls[i].fd);
|
|
|
95 ls[i].ignore = 1;
|
|
|
96 continue;
|
|
|
97 }
|
|
|
98 ls[i].addr_text_max_len = INET_ADDRSTRLEN;
|
|
|
99
|
|
|
100 ls[i].addr_text.data = ngx_palloc(cycle->pool, ls[i].addr_text_max_len);
|
|
|
101 if (ls[i].addr_text.data == NULL) {
|
|
|
102 return NGX_ERROR;
|
|
|
103 }
|
|
|
104
|
|
|
105 ls[i].family = addr_in->sin_family;
|
|
|
106 ls[i].addr_text.len = ngx_sock_ntop(ls[i].family, ls[i].sockaddr,
|
|
|
107 ls[i].addr_text.data,
|
|
|
108 ls[i].addr_text_max_len);
|
|
|
109 if (ls[i].addr_text.len == 0) {
|
|
|
110 return NGX_ERROR;
|
|
|
111 }
|
|
|
112 }
|
|
|
113
|
|
|
114 return NGX_OK;
|
|
|
115 }
|
|
|
116
|
|
|
117
|
|
|
118 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle)
|
|
|
119 {
|
|
|
120 ngx_uint_t tries, failed, reuseaddr, i;
|
|
|
121 ngx_err_t err;
|
|
|
122 ngx_log_t *log;
|
|
|
123 ngx_socket_t s;
|
|
|
124 ngx_listening_t *ls;
|
|
|
125
|
|
|
126 reuseaddr = 1;
|
|
|
127 #if (NGX_SUPPRESS_WARN)
|
|
|
128 failed = 0;
|
|
|
129 #endif
|
|
|
130
|
|
|
131 log = cycle->log;
|
|
|
132
|
|
|
133 /* TODO: tries configurable */
|
|
|
134
|
|
|
135 for (tries = /* STUB */ 5; tries; tries--) {
|
|
|
136 failed = 0;
|
|
|
137
|
|
|
138 /* for each listening socket */
|
|
|
139
|
|
|
140 ls = cycle->listening.elts;
|
|
|
141 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
142
|
|
|
143 if (ls[i].ignore) {
|
|
|
144 continue;
|
|
|
145 }
|
|
|
146
|
|
|
147 if (ls[i].fd != -1) {
|
|
|
148 continue;
|
|
|
149 }
|
|
|
150
|
|
|
151 if (ls[i].inherited) {
|
|
|
152
|
|
|
153 /* TODO: close on exit */
|
|
|
154 /* TODO: nonblocking */
|
|
|
155 /* TODO: deferred accept */
|
|
|
156
|
|
|
157 continue;
|
|
|
158 }
|
|
|
159
|
|
|
160 s = ngx_socket(ls[i].family, ls[i].type, ls[i].protocol,
|
|
|
161 ls[i].flags);
|
|
|
162
|
|
|
163 if (s == -1) {
|
|
|
164 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
165 ngx_socket_n " %s failed", ls[i].addr_text.data);
|
|
|
166 return NGX_ERROR;
|
|
|
167 }
|
|
|
168
|
|
|
169 #if (WIN32)
|
|
|
170 /*
|
|
|
171 * Winsock assignes a socket number divisible by 4
|
|
|
172 * so to find a connection we divide a socket number by 4.
|
|
|
173 */
|
|
|
174
|
|
|
175 if (s % 4) {
|
|
|
176 ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
|
|
|
177 ngx_socket_n " created socket %d", s);
|
|
|
178 return NGX_ERROR;
|
|
|
179 }
|
|
|
180 #endif
|
|
|
181
|
|
|
182 if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR,
|
|
|
183 (const void *) &reuseaddr, sizeof(int)) == -1) {
|
|
|
184 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
185 "setsockopt(SO_REUSEADDR) %s failed",
|
|
|
186 ls[i].addr_text.data);
|
|
|
187 return NGX_ERROR;
|
|
|
188 }
|
|
|
189
|
|
|
190 /* TODO: close on exit */
|
|
|
191
|
|
|
192 if (!(ngx_event_flags & NGX_USE_AIO_EVENT)) {
|
|
|
193 if (ngx_nonblocking(s) == -1) {
|
|
|
194 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
195 ngx_nonblocking_n " %s failed",
|
|
|
196 ls[i].addr_text.data);
|
|
|
197 return NGX_ERROR;
|
|
|
198 }
|
|
|
199 }
|
|
|
200
|
|
|
201 #if 0
|
|
|
202 if (ls[i].nonblocking) {
|
|
|
203 if (ngx_nonblocking(s) == -1) {
|
|
|
204 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
205 ngx_nonblocking_n " %s failed",
|
|
|
206 ls[i].addr_text.data);
|
|
|
207 return NGX_ERROR;
|
|
|
208 }
|
|
|
209 }
|
|
|
210 #endif
|
|
|
211
|
|
|
212 if (bind(s, ls[i].sockaddr, ls[i].socklen) == -1) {
|
|
|
213 err = ngx_socket_errno;
|
|
|
214 ngx_log_error(NGX_LOG_EMERG, log, err,
|
|
|
215 "bind() to %s failed", ls[i].addr_text.data);
|
|
|
216
|
|
|
217 if (err != NGX_EADDRINUSE)
|
|
|
218 return NGX_ERROR;
|
|
|
219
|
|
|
220 if (ngx_close_socket(s) == -1)
|
|
|
221 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
222 ngx_close_socket_n " %s failed",
|
|
|
223 ls[i].addr_text.data);
|
|
|
224
|
|
|
225 failed = 1;
|
|
|
226 continue;
|
|
|
227 }
|
|
|
228
|
|
|
229 if (listen(s, ls[i].backlog) == -1) {
|
|
|
230 ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno,
|
|
|
231 "listen() to %s failed", ls[i].addr_text.data);
|
|
|
232 return NGX_ERROR;
|
|
|
233 }
|
|
|
234
|
|
|
235 /* TODO: deferred accept */
|
|
|
236
|
|
|
237 ls[i].fd = s;
|
|
|
238 }
|
|
|
239
|
|
|
240 if (!failed)
|
|
|
241 break;
|
|
|
242
|
|
|
243 /* TODO: delay configurable */
|
|
|
244
|
|
|
245 ngx_log_error(NGX_LOG_NOTICE, log, 0,
|
|
|
246 "try again to bind() after 500ms");
|
|
|
247 ngx_msleep(500);
|
|
|
248 }
|
|
|
249
|
|
|
250 if (failed) {
|
|
|
251 ngx_log_error(NGX_LOG_EMERG, log, 0, "still can not bind()");
|
|
|
252 return NGX_ERROR;
|
|
|
253 }
|
|
|
254
|
|
|
255 return NGX_OK;
|
|
|
256 }
|
|
|
257
|
|
|
258
|
|
|
259 void ngx_close_listening_sockets(ngx_cycle_t *cycle)
|
|
|
260 {
|
|
|
261 ngx_uint_t i;
|
|
|
262 ngx_socket_t fd;
|
|
|
263 ngx_listening_t *ls;
|
|
|
264
|
|
|
265 if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
|
|
|
266 return;
|
|
|
267 }
|
|
|
268
|
|
|
269 ngx_accept_mutex_held = 0;
|
|
|
270 ngx_accept_mutex = NULL;
|
|
|
271
|
|
|
272 ls = cycle->listening.elts;
|
|
|
273 for (i = 0; i < cycle->listening.nelts; i++) {
|
|
|
274 fd = ls[i].fd;
|
|
|
275
|
|
|
276 #if (WIN32)
|
|
|
277 /*
|
|
|
278 * Winsock assignes a socket number divisible by 4
|
|
|
279 * so to find a connection we divide a socket number by 4.
|
|
|
280 */
|
|
|
281
|
|
|
282 fd /= 4;
|
|
|
283 #endif
|
|
|
284
|
|
|
285 if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
|
|
|
286 if (cycle->connections[fd].read->active) {
|
|
|
287 ngx_del_conn(&cycle->connections[fd], NGX_CLOSE_EVENT);
|
|
|
288 }
|
|
|
289
|
|
|
290 } else {
|
|
|
291 if (cycle->read_events[fd].active) {
|
|
|
292 ngx_del_event(&cycle->read_events[fd],
|
|
|
293 NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
294 }
|
|
|
295 }
|
|
|
296
|
|
|
297 if (ngx_close_socket(ls[i].fd) == -1) {
|
|
|
298 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
|
|
|
299 ngx_close_socket_n " %s failed",
|
|
|
300 ls[i].addr_text.data);
|
|
|
301 }
|
|
|
302
|
|
|
303 cycle->connections[fd].fd = (ngx_socket_t) -1;
|
|
|
304 }
|
|
|
305 }
|
|
|
306
|
|
|
307
|
|
|
308 void ngx_close_connection(ngx_connection_t *c)
|
|
|
309 {
|
|
|
310 ngx_socket_t fd;
|
|
|
311
|
|
|
312 if (c->pool == NULL) {
|
|
|
313 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "connection already closed");
|
|
|
314 return;
|
|
|
315 }
|
|
|
316
|
|
|
317 if (c->read->timer_set) {
|
|
|
318 ngx_del_timer(c->read);
|
|
|
319 }
|
|
|
320
|
|
|
321 if (c->write->timer_set) {
|
|
|
322 ngx_del_timer(c->write);
|
|
|
323 }
|
|
|
324
|
|
|
325 if (ngx_del_conn) {
|
|
|
326 ngx_del_conn(c, NGX_CLOSE_EVENT);
|
|
|
327
|
|
|
328 } else {
|
|
|
329 if (c->read->active || c->read->disabled) {
|
|
|
330 ngx_del_event(c->read, NGX_READ_EVENT, NGX_CLOSE_EVENT);
|
|
|
331 }
|
|
|
332
|
|
|
333 if (c->write->active || c->write->disabled) {
|
|
|
334 ngx_del_event(c->write, NGX_WRITE_EVENT, NGX_CLOSE_EVENT);
|
|
|
335 }
|
|
|
336 }
|
|
|
337
|
|
|
338 #if (NGX_THREADS)
|
|
|
339
|
|
|
340 /*
|
|
|
341 * we have to clean the connection information before the closing
|
|
|
342 * because another thread may reopen the same file descriptor
|
|
|
343 * before we clean the connection
|
|
|
344 */
|
|
|
345
|
|
|
346 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_OK) {
|
|
|
347
|
|
|
348 if (c->read->prev) {
|
|
|
349 ngx_delete_posted_event(c->read);
|
|
|
350 }
|
|
|
351
|
|
|
352 if (c->write->prev) {
|
|
|
353 ngx_delete_posted_event(c->write);
|
|
|
354 }
|
|
|
355
|
|
|
356 c->read->closed = 1;
|
|
|
357 c->write->closed = 1;
|
|
|
358
|
|
|
359 if (c->single_connection) {
|
|
|
360 ngx_unlock(&c->lock);
|
|
|
361 c->read->locked = 0;
|
|
|
362 c->write->locked = 0;
|
|
|
363 }
|
|
|
364
|
|
|
365 ngx_mutex_unlock(ngx_posted_events_mutex);
|
|
|
366 }
|
|
|
367
|
|
|
368 #else
|
|
|
369
|
|
|
370 if (c->read->prev) {
|
|
|
371 ngx_delete_posted_event(c->read);
|
|
|
372 }
|
|
|
373
|
|
|
374 if (c->write->prev) {
|
|
|
375 ngx_delete_posted_event(c->write);
|
|
|
376 }
|
|
|
377
|
|
|
378 c->read->closed = 1;
|
|
|
379 c->write->closed = 1;
|
|
|
380
|
|
|
381 #endif
|
|
|
382
|
|
|
383 fd = c->fd;
|
|
|
384 c->fd = (ngx_socket_t) -1;
|
|
|
385 c->data = NULL;
|
|
|
386
|
|
|
387 ngx_destroy_pool(c->pool);
|
|
|
388
|
|
|
389 if (ngx_close_socket(fd) == -1) {
|
|
|
390
|
|
|
391 /* we use ngx_cycle->log because c->log was in c->pool */
|
|
|
392
|
|
|
393 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_socket_errno,
|
|
|
394 ngx_close_socket_n " failed");
|
|
|
395 }
|
|
|
396 }
|
|
|
397
|
|
|
398
|
|
|
399
|
|
|
400 ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text)
|
|
|
401 {
|
|
|
402 ngx_uint_t level;
|
|
|
403
|
|
|
404 if (err == NGX_ECONNRESET
|
|
|
405 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET)
|
|
|
406 {
|
|
|
407 return 0;
|
|
|
408 }
|
|
|
409
|
|
|
410 if (err == NGX_ECONNRESET
|
|
|
411 #if !(WIN32)
|
|
|
412 || err == NGX_EPIPE
|
|
|
413 #endif
|
|
|
414 || err == NGX_ENOTCONN
|
|
|
415 || err == NGX_ECONNREFUSED
|
|
|
416 || err == NGX_EHOSTUNREACH)
|
|
|
417 {
|
|
|
418
|
|
|
419 switch (c->log_error) {
|
|
|
420
|
|
|
421 case NGX_ERROR_IGNORE_ECONNRESET:
|
|
|
422 case NGX_ERROR_INFO:
|
|
|
423 level = NGX_LOG_INFO;
|
|
|
424 break;
|
|
|
425
|
|
|
426 case NGX_ERROR_ERR:
|
|
|
427 level = NGX_LOG_ERR;
|
|
|
428 break;
|
|
|
429
|
|
|
430 default:
|
|
|
431 level = NGX_LOG_CRIT;
|
|
|
432 }
|
|
|
433
|
|
|
434 } else {
|
|
|
435 level = NGX_LOG_CRIT;
|
|
|
436 }
|
|
|
437
|
|
|
438 ngx_log_error(level, c->log, err, text);
|
|
|
439
|
|
|
440 return NGX_ERROR;
|
|
|
441 }
|
