Mercurial > hg > nginx-quic
annotate src/event/ngx_event_accept.c @ 6877:8acc44141e44
Updated zlib and PCRE used for win32 builds.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 24 Jan 2017 16:41:29 +0300 |
parents | 56fc55e32f23 |
children | 3e2d90073adf |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
99
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10 #include <ngx_event.h> |
0
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12 |
573 | 13 static ngx_int_t ngx_enable_accept_events(ngx_cycle_t *cycle); |
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14 static ngx_int_t ngx_disable_accept_events(ngx_cycle_t *cycle, ngx_uint_t all); |
543 | 15 static void ngx_close_accepted_connection(ngx_connection_t *c); |
6436 | 16 #if (NGX_DEBUG) |
17 static void ngx_debug_accepted_connection(ngx_event_conf_t *ecf, | |
18 ngx_connection_t *c); | |
19 #endif | |
191
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20 |
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21 |
493 | 22 void |
23 ngx_event_accept(ngx_event_t *ev) | |
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24 { |
714 | 25 socklen_t socklen; |
483 | 26 ngx_err_t err; |
27 ngx_log_t *log; | |
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28 ngx_uint_t level; |
483 | 29 ngx_socket_t s; |
30 ngx_event_t *rev, *wev; | |
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31 ngx_sockaddr_t sa; |
543 | 32 ngx_listening_t *ls; |
33 ngx_connection_t *c, *lc; | |
483 | 34 ngx_event_conf_t *ecf; |
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35 #if (NGX_HAVE_ACCEPT4) |
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36 static ngx_uint_t use_accept4 = 1; |
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37 #endif |
26
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38 |
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39 if (ev->timedout) { |
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40 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { |
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41 return; |
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42 } |
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43 |
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44 ev->timedout = 0; |
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45 } |
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46 |
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47 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); |
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48 |
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49 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { |
248
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50 ev->available = ecf->multi_accept; |
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51 } |
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52 |
543 | 53 lc = ev->data; |
54 ls = lc->listening; | |
55 ev->ready = 0; | |
57
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56 |
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57 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, |
543 | 58 "accept on %V, ready: %d", &ls->addr_text, ev->available); |
57
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59 |
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60 do { |
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61 socklen = sizeof(ngx_sockaddr_t); |
191
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62 |
3786 | 63 #if (NGX_HAVE_ACCEPT4) |
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64 if (use_accept4) { |
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65 s = accept4(lc->fd, &sa.sockaddr, &socklen, SOCK_NONBLOCK); |
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66 } else { |
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67 s = accept(lc->fd, &sa.sockaddr, &socklen); |
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68 } |
3786 | 69 #else |
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70 s = accept(lc->fd, &sa.sockaddr, &socklen); |
3786 | 71 #endif |
477 | 72 |
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73 if (s == (ngx_socket_t) -1) { |
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74 err = ngx_socket_errno; |
57
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75 |
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76 if (err == NGX_EAGAIN) { |
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77 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, |
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78 "accept() not ready"); |
87
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79 return; |
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80 } |
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81 |
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82 level = NGX_LOG_ALERT; |
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83 |
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84 if (err == NGX_ECONNABORTED) { |
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85 level = NGX_LOG_ERR; |
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86 |
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87 } else if (err == NGX_EMFILE || err == NGX_ENFILE) { |
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88 level = NGX_LOG_CRIT; |
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89 } |
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90 |
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91 #if (NGX_HAVE_ACCEPT4) |
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92 ngx_log_error(level, ev->log, err, |
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93 use_accept4 ? "accept4() failed" : "accept() failed"); |
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94 |
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95 if (use_accept4 && err == NGX_ENOSYS) { |
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96 use_accept4 = 0; |
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97 ngx_inherited_nonblocking = 0; |
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98 continue; |
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99 } |
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100 #else |
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101 ngx_log_error(level, ev->log, err, "accept() failed"); |
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102 #endif |
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103 |
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104 if (err == NGX_ECONNABORTED) { |
455 | 105 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
248
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106 ev->available--; |
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107 } |
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108 |
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109 if (ev->available) { |
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110 continue; |
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111 } |
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112 } |
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113 |
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114 if (err == NGX_EMFILE || err == NGX_ENFILE) { |
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115 if (ngx_disable_accept_events((ngx_cycle_t *) ngx_cycle, 1) |
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116 != NGX_OK) |
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117 { |
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118 return; |
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119 } |
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120 |
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121 if (ngx_use_accept_mutex) { |
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122 if (ngx_accept_mutex_held) { |
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123 ngx_shmtx_unlock(&ngx_accept_mutex); |
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124 ngx_accept_mutex_held = 0; |
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125 } |
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126 |
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127 ngx_accept_disabled = 1; |
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128 |
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Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
129 } else { |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
130 ngx_add_timer(ev, ecf->accept_mutex_delay); |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
131 } |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
132 } |
c05cfc46b3bc
Accept moderation in case of EMFILE/ENFILE.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4613
diff
changeset
|
133 |
97
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
134 return; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
135 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
136 |
426
3f88935a02e8
nginx-0.0.10-2004-09-14-23:39:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
425
diff
changeset
|
137 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
138 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); |
426
3f88935a02e8
nginx-0.0.10-2004-09-14-23:39:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
425
diff
changeset
|
139 #endif |
323
ba876b26b76d
nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
315
diff
changeset
|
140 |
2255 | 141 ngx_accept_disabled = ngx_cycle->connection_n / 8 |
543 | 142 - ngx_cycle->free_connection_n; |
143 | |
144 c = ngx_get_connection(s, ev->log); | |
323
ba876b26b76d
nginx-0.0.3-2004-04-21-22:54:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
315
diff
changeset
|
145 |
543 | 146 if (c == NULL) { |
147 if (ngx_close_socket(s) == -1) { | |
148 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, | |
149 ngx_close_socket_n " failed"); | |
150 } | |
119
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
117
diff
changeset
|
151 |
543 | 152 return; |
153 } | |
154 | |
6436 | 155 c->type = SOCK_STREAM; |
156 | |
635 | 157 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
158 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); |
635 | 159 #endif |
160 | |
543 | 161 c->pool = ngx_create_pool(ls->pool_size, ev->log); |
162 if (c->pool == NULL) { | |
163 ngx_close_accepted_connection(c); | |
164 return; | |
165 } | |
97
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
166 |
714 | 167 c->sockaddr = ngx_palloc(c->pool, socklen); |
543 | 168 if (c->sockaddr == NULL) { |
169 ngx_close_accepted_connection(c); | |
170 return; | |
171 } | |
172 | |
6559
adf25b8d0431
Introduced the ngx_sockaddr_t type.
Ruslan Ermilov <ru@nginx.com>
parents:
6532
diff
changeset
|
173 ngx_memcpy(c->sockaddr, &sa, socklen); |
543 | 174 |
175 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
176 if (log == NULL) { | |
177 ngx_close_accepted_connection(c); | |
87
5f6d848dcbef
nginx-0.0.1-2003-05-13-20:02:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
86
diff
changeset
|
178 return; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
179 } |
6
669801705ab1
nginx-0.0.1-2002-08-26-19:18:19 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
180 |
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
181 /* set a blocking mode for iocp and non-blocking mode for others */ |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
182 |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
183 if (ngx_inherited_nonblocking) { |
6125
4dc8e7b62216
Removed the obsolete aio module.
Ruslan Ermilov <ru@nginx.com>
parents:
5820
diff
changeset
|
184 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
185 if (ngx_blocking(s) == -1) { |
543 | 186 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
187 ngx_blocking_n " failed"); |
543 | 188 ngx_close_accepted_connection(c); |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
189 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
190 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
191 } |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
192 |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
193 } else { |
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
194 if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) { |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
195 if (ngx_nonblocking(s) == -1) { |
543 | 196 ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_socket_errno, |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
197 ngx_nonblocking_n " failed"); |
543 | 198 ngx_close_accepted_connection(c); |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
199 return; |
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
92
diff
changeset
|
200 } |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
201 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
202 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
203 |
543 | 204 *log = ls->log; |
205 | |
206 c->recv = ngx_recv; | |
207 c->send = ngx_send; | |
577 | 208 c->recv_chain = ngx_recv_chain; |
543 | 209 c->send_chain = ngx_send_chain; |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
100
diff
changeset
|
210 |
543 | 211 c->log = log; |
212 c->pool->log = log; | |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
100
diff
changeset
|
213 |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
214 c->socklen = socklen; |
543 | 215 c->listening = ls; |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
216 c->local_sockaddr = ls->sockaddr; |
5463
1ab1cf63f885
Core: keep the length of the local sockaddr.
Ruslan Ermilov <ru@nginx.com>
parents:
5360
diff
changeset
|
217 c->local_socklen = ls->socklen; |
543 | 218 |
3230
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
219 #if (NGX_HAVE_UNIX_DOMAIN) |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
220 if (c->sockaddr->sa_family == AF_UNIX) { |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
221 c->tcp_nopush = NGX_TCP_NOPUSH_DISABLED; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
222 c->tcp_nodelay = NGX_TCP_NODELAY_DISABLED; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
223 #if (NGX_SOLARIS) |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
224 /* Solaris's sendfilev() supports AF_NCA, AF_INET, and AF_INET6 */ |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
225 c->sendfile = 0; |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
226 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
227 } |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
228 #endif |
a7491af45540
http listen unix domain sockets
Igor Sysoev <igor@sysoev.ru>
parents:
2951
diff
changeset
|
229 |
561 | 230 rev = c->read; |
231 wev = c->write; | |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
232 |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
233 wev->ready = 1; |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
234 |
6126
adba26ff70b5
Removed the obsolete rtsig module.
Ruslan Ermilov <ru@nginx.com>
parents:
6125
diff
changeset
|
235 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
121
diff
changeset
|
236 rev->ready = 1; |
59
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
237 } |
e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
57
diff
changeset
|
238 |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
239 if (ev->deferred_accept) { |
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
240 rev->ready = 1; |
523 | 241 #if (NGX_HAVE_KQUEUE) |
242 rev->available = 1; | |
243 #endif | |
245
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
244 } |
e6c005b66b3a
nginx-0.0.1-2004-01-30-00:45:01 import
Igor Sysoev <igor@sysoev.ru>
parents:
236
diff
changeset
|
245 |
191
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
246 rev->log = log; |
71ce40b3c37b
nginx-0.0.1-2003-11-19-19:26:41 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
|
247 wev->log = log; |
57
a499e0d1f16e
nginx-0.0.1-2003-01-30-10:28:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
44
diff
changeset
|
248 |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
249 /* |
561 | 250 * TODO: MT: - ngx_atomic_fetch_add() |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
260
diff
changeset
|
251 * or protection by critical section or light mutex |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
252 * |
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
253 * TODO: MP: - allocated in a shared memory |
561 | 254 * - ngx_atomic_fetch_add() |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
260
diff
changeset
|
255 * or protection by critical section or light mutex |
208
0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
206
diff
changeset
|
256 */ |
212
679f60139863
nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
208
diff
changeset
|
257 |
561 | 258 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
26
53cb81681040
nginx-0.0.1-2002-12-15-09:25:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
24
diff
changeset
|
259 |
495 | 260 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
Igor Sysoev <igor@sysoev.ru>
parents:
2723
diff
changeset
|
261 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); |
495 | 262 #endif |
263 | |
543 | 264 if (ls->addr_ntop) { |
2049 | 265 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
266 if (c->addr_text.data == NULL) { |
543 | 267 ngx_close_accepted_connection(c); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
268 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
269 } |
577 | 270 |
5263
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
4618
diff
changeset
|
271 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
05ba5bce31e0
Core: extended ngx_sock_ntop() with socklen parameter.
Vladimir Homutov <vl@nginx.com>
parents:
4618
diff
changeset
|
272 c->addr_text.data, |
2512
2e91aecb9e57
a prelimiary IPv6 support, HTTP listen
Igor Sysoev <igor@sysoev.ru>
parents:
2255
diff
changeset
|
273 ls->addr_text_max_len, 0); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
274 if (c->addr_text.len == 0) { |
543 | 275 ngx_close_accepted_connection(c); |
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
276 return; |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
277 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
278 } |
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
279 |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
280 #if (NGX_DEBUG) |
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
281 { |
6436 | 282 ngx_str_t addr; |
283 u_char text[NGX_SOCKADDR_STRLEN]; | |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
284 |
6436 | 285 ngx_debug_accepted_connection(ecf, c); |
307
ce375c313e96
nginx-0.0.3-2004-04-08-19:58:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
306
diff
changeset
|
286 |
5704
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
changeset
|
287 if (log->log_level & NGX_LOG_DEBUG_EVENT) { |
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
changeset
|
288 addr.data = text; |
524741fd50ed
Core: output client port number when logging accept event.
Ruslan Ermilov <ru@nginx.com>
parents:
5600
diff
changeset
|
289 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, |
524741fd50ed
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290 NGX_SOCKADDR_STRLEN, 1); |
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291 |
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292 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0, |
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293 "*%uA accept: %V fd:%d", c->number, &addr, s); |
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294 } |
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295 |
307
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296 } |
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297 #endif |
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298 |
381
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299 if (ngx_add_conn && (ngx_event_flags & NGX_USE_EPOLL_EVENT) == 0) { |
97
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300 if (ngx_add_conn(c) == NGX_ERROR) { |
543 | 301 ngx_close_accepted_connection(c); |
87
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302 return; |
64
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303 } |
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304 } |
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305 |
191
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306 log->data = NULL; |
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307 log->handler = NULL; |
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308 |
543 | 309 ls->handler(c); |
57
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310 |
455 | 311 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
0
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312 ev->available--; |
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313 } |
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314 |
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315 } while (ev->available); |
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316 } |
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317 |
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318 |
6436 | 319 #if !(NGX_WIN32) |
320 | |
321 void | |
322 ngx_event_recvmsg(ngx_event_t *ev) | |
323 { | |
324 ssize_t n; | |
325 ngx_log_t *log; | |
326 ngx_err_t err; | |
327 ngx_event_t *rev, *wev; | |
328 struct iovec iov[1]; | |
329 struct msghdr msg; | |
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330 ngx_sockaddr_t sa; |
6436 | 331 ngx_listening_t *ls; |
332 ngx_event_conf_t *ecf; | |
333 ngx_connection_t *c, *lc; | |
334 static u_char buffer[65535]; | |
335 | |
336 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
337 | |
338 #if (NGX_HAVE_IP_RECVDSTADDR) | |
339 u_char msg_control[CMSG_SPACE(sizeof(struct in_addr))]; | |
340 #elif (NGX_HAVE_IP_PKTINFO) | |
341 u_char msg_control[CMSG_SPACE(sizeof(struct in_pktinfo))]; | |
342 #endif | |
343 | |
344 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
345 u_char msg_control6[CMSG_SPACE(sizeof(struct in6_pktinfo))]; | |
346 #endif | |
347 | |
348 #endif | |
349 | |
350 if (ev->timedout) { | |
351 if (ngx_enable_accept_events((ngx_cycle_t *) ngx_cycle) != NGX_OK) { | |
352 return; | |
353 } | |
354 | |
355 ev->timedout = 0; | |
356 } | |
357 | |
358 ecf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_event_core_module); | |
359 | |
360 if (!(ngx_event_flags & NGX_USE_KQUEUE_EVENT)) { | |
361 ev->available = ecf->multi_accept; | |
362 } | |
363 | |
364 lc = ev->data; | |
365 ls = lc->listening; | |
366 ev->ready = 0; | |
367 | |
368 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, | |
369 "recvmsg on %V, ready: %d", &ls->addr_text, ev->available); | |
370 | |
371 do { | |
372 ngx_memzero(&msg, sizeof(struct msghdr)); | |
373 | |
374 iov[0].iov_base = (void *) buffer; | |
375 iov[0].iov_len = sizeof(buffer); | |
376 | |
377 msg.msg_name = &sa; | |
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378 msg.msg_namelen = sizeof(ngx_sockaddr_t); |
6436 | 379 msg.msg_iov = iov; |
380 msg.msg_iovlen = 1; | |
381 | |
382 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
383 | |
384 if (ls->wildcard) { | |
385 | |
386 #if (NGX_HAVE_IP_RECVDSTADDR || NGX_HAVE_IP_PKTINFO) | |
387 if (ls->sockaddr->sa_family == AF_INET) { | |
388 msg.msg_control = &msg_control; | |
389 msg.msg_controllen = sizeof(msg_control); | |
390 } | |
391 #endif | |
392 | |
393 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
394 if (ls->sockaddr->sa_family == AF_INET6) { | |
395 msg.msg_control = &msg_control6; | |
396 msg.msg_controllen = sizeof(msg_control6); | |
397 } | |
398 #endif | |
399 } | |
400 | |
401 #endif | |
402 | |
403 n = recvmsg(lc->fd, &msg, 0); | |
404 | |
405 if (n == -1) { | |
406 err = ngx_socket_errno; | |
407 | |
408 if (err == NGX_EAGAIN) { | |
409 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, err, | |
410 "recvmsg() not ready"); | |
411 return; | |
412 } | |
413 | |
414 ngx_log_error(NGX_LOG_ALERT, ev->log, err, "recvmsg() failed"); | |
415 | |
416 return; | |
417 } | |
418 | |
419 #if (NGX_STAT_STUB) | |
420 (void) ngx_atomic_fetch_add(ngx_stat_accepted, 1); | |
421 #endif | |
422 | |
423 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
424 if (msg.msg_flags & (MSG_TRUNC|MSG_CTRUNC)) { | |
425 ngx_log_error(NGX_LOG_ALERT, ev->log, 0, | |
426 "recvmsg() truncated data"); | |
427 continue; | |
428 } | |
429 #endif | |
430 | |
431 ngx_accept_disabled = ngx_cycle->connection_n / 8 | |
432 - ngx_cycle->free_connection_n; | |
433 | |
434 c = ngx_get_connection(lc->fd, ev->log); | |
435 if (c == NULL) { | |
436 return; | |
437 } | |
438 | |
439 c->shared = 1; | |
440 c->type = SOCK_DGRAM; | |
441 c->socklen = msg.msg_namelen; | |
442 | |
443 #if (NGX_STAT_STUB) | |
444 (void) ngx_atomic_fetch_add(ngx_stat_active, 1); | |
445 #endif | |
446 | |
447 c->pool = ngx_create_pool(ls->pool_size, ev->log); | |
448 if (c->pool == NULL) { | |
449 ngx_close_accepted_connection(c); | |
450 return; | |
451 } | |
452 | |
453 c->sockaddr = ngx_palloc(c->pool, c->socklen); | |
454 if (c->sockaddr == NULL) { | |
455 ngx_close_accepted_connection(c); | |
456 return; | |
457 } | |
458 | |
459 ngx_memcpy(c->sockaddr, msg.msg_name, c->socklen); | |
460 | |
461 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
462 if (log == NULL) { | |
463 ngx_close_accepted_connection(c); | |
464 return; | |
465 } | |
466 | |
467 *log = ls->log; | |
468 | |
469 c->send = ngx_udp_send; | |
6692 | 470 c->send_chain = ngx_udp_send_chain; |
6436 | 471 |
472 c->log = log; | |
473 c->pool->log = log; | |
474 | |
475 c->listening = ls; | |
476 c->local_sockaddr = ls->sockaddr; | |
477 c->local_socklen = ls->socklen; | |
478 | |
479 #if (NGX_HAVE_MSGHDR_MSG_CONTROL) | |
480 | |
481 if (ls->wildcard) { | |
482 struct cmsghdr *cmsg; | |
483 struct sockaddr *sockaddr; | |
484 | |
485 sockaddr = ngx_palloc(c->pool, c->local_socklen); | |
486 if (sockaddr == NULL) { | |
487 ngx_close_accepted_connection(c); | |
488 return; | |
489 } | |
490 | |
491 ngx_memcpy(sockaddr, c->local_sockaddr, c->local_socklen); | |
492 c->local_sockaddr = sockaddr; | |
493 | |
494 for (cmsg = CMSG_FIRSTHDR(&msg); | |
495 cmsg != NULL; | |
496 cmsg = CMSG_NXTHDR(&msg, cmsg)) | |
497 { | |
498 | |
499 #if (NGX_HAVE_IP_RECVDSTADDR) | |
500 | |
501 if (cmsg->cmsg_level == IPPROTO_IP | |
502 && cmsg->cmsg_type == IP_RECVDSTADDR | |
503 && sockaddr->sa_family == AF_INET) | |
504 { | |
505 struct in_addr *addr; | |
506 struct sockaddr_in *sin; | |
507 | |
508 addr = (struct in_addr *) CMSG_DATA(cmsg); | |
509 sin = (struct sockaddr_in *) sockaddr; | |
510 sin->sin_addr = *addr; | |
511 | |
512 break; | |
513 } | |
514 | |
515 #elif (NGX_HAVE_IP_PKTINFO) | |
516 | |
517 if (cmsg->cmsg_level == IPPROTO_IP | |
518 && cmsg->cmsg_type == IP_PKTINFO | |
519 && sockaddr->sa_family == AF_INET) | |
520 { | |
521 struct in_pktinfo *pkt; | |
522 struct sockaddr_in *sin; | |
523 | |
524 pkt = (struct in_pktinfo *) CMSG_DATA(cmsg); | |
525 sin = (struct sockaddr_in *) sockaddr; | |
526 sin->sin_addr = pkt->ipi_addr; | |
527 | |
528 break; | |
529 } | |
530 | |
531 #endif | |
532 | |
533 #if (NGX_HAVE_INET6 && NGX_HAVE_IPV6_RECVPKTINFO) | |
534 | |
535 if (cmsg->cmsg_level == IPPROTO_IPV6 | |
536 && cmsg->cmsg_type == IPV6_PKTINFO | |
537 && sockaddr->sa_family == AF_INET6) | |
538 { | |
539 struct in6_pktinfo *pkt6; | |
540 struct sockaddr_in6 *sin6; | |
541 | |
542 pkt6 = (struct in6_pktinfo *) CMSG_DATA(cmsg); | |
543 sin6 = (struct sockaddr_in6 *) sockaddr; | |
544 sin6->sin6_addr = pkt6->ipi6_addr; | |
545 | |
546 break; | |
547 } | |
548 | |
549 #endif | |
550 | |
551 } | |
552 } | |
553 | |
554 #endif | |
555 | |
556 c->buffer = ngx_create_temp_buf(c->pool, n); | |
557 if (c->buffer == NULL) { | |
558 ngx_close_accepted_connection(c); | |
559 return; | |
560 } | |
561 | |
562 c->buffer->last = ngx_cpymem(c->buffer->last, buffer, n); | |
563 | |
564 rev = c->read; | |
565 wev = c->write; | |
566 | |
567 wev->ready = 1; | |
568 | |
569 rev->log = log; | |
570 wev->log = log; | |
571 | |
572 /* | |
573 * TODO: MT: - ngx_atomic_fetch_add() | |
574 * or protection by critical section or light mutex | |
575 * | |
576 * TODO: MP: - allocated in a shared memory | |
577 * - ngx_atomic_fetch_add() | |
578 * or protection by critical section or light mutex | |
579 */ | |
580 | |
581 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); | |
582 | |
583 #if (NGX_STAT_STUB) | |
584 (void) ngx_atomic_fetch_add(ngx_stat_handled, 1); | |
585 #endif | |
586 | |
587 if (ls->addr_ntop) { | |
588 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); | |
589 if (c->addr_text.data == NULL) { | |
590 ngx_close_accepted_connection(c); | |
591 return; | |
592 } | |
593 | |
594 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, | |
595 c->addr_text.data, | |
596 ls->addr_text_max_len, 0); | |
597 if (c->addr_text.len == 0) { | |
598 ngx_close_accepted_connection(c); | |
599 return; | |
600 } | |
601 } | |
602 | |
603 #if (NGX_DEBUG) | |
604 { | |
605 ngx_str_t addr; | |
606 u_char text[NGX_SOCKADDR_STRLEN]; | |
607 | |
608 ngx_debug_accepted_connection(ecf, c); | |
609 | |
610 if (log->log_level & NGX_LOG_DEBUG_EVENT) { | |
611 addr.data = text; | |
612 addr.len = ngx_sock_ntop(c->sockaddr, c->socklen, text, | |
613 NGX_SOCKADDR_STRLEN, 1); | |
614 | |
615 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, log, 0, | |
616 "*%uA recvmsg: %V fd:%d n:%z", | |
617 c->number, &addr, c->fd, n); | |
618 } | |
619 | |
620 } | |
621 #endif | |
622 | |
623 log->data = NULL; | |
624 log->handler = NULL; | |
625 | |
626 ls->handler(c); | |
627 | |
628 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
629 ev->available -= n; | |
630 } | |
631 | |
632 } while (ev->available); | |
633 } | |
634 | |
635 #endif | |
636 | |
637 | |
493 | 638 ngx_int_t |
639 ngx_trylock_accept_mutex(ngx_cycle_t *cycle) | |
301
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640 { |
611 | 641 if (ngx_shmtx_trylock(&ngx_accept_mutex)) { |
642 | |
301
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643 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
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644 "accept mutex locked"); |
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645 |
6126
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646 if (ngx_accept_mutex_held && ngx_accept_events == 0) { |
573 | 647 return NGX_OK; |
648 } | |
301
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649 |
573 | 650 if (ngx_enable_accept_events(cycle) == NGX_ERROR) { |
611 | 651 ngx_shmtx_unlock(&ngx_accept_mutex); |
573 | 652 return NGX_ERROR; |
301
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653 } |
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654 |
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655 ngx_accept_events = 0; |
573 | 656 ngx_accept_mutex_held = 1; |
657 | |
301
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658 return NGX_OK; |
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659 } |
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660 |
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661 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, |
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662 "accept mutex lock failed: %ui", ngx_accept_mutex_held); |
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663 |
302
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664 if (ngx_accept_mutex_held) { |
6153
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The "reuseport" option of the "listen" directive.
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665 if (ngx_disable_accept_events(cycle, 0) == NGX_ERROR) { |
301
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666 return NGX_ERROR; |
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667 } |
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668 |
302
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669 ngx_accept_mutex_held = 0; |
301
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670 } |
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671 |
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672 return NGX_OK; |
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673 } |
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674 |
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675 |
573 | 676 static ngx_int_t |
493 | 677 ngx_enable_accept_events(ngx_cycle_t *cycle) |
301
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678 { |
543 | 679 ngx_uint_t i; |
680 ngx_listening_t *ls; | |
681 ngx_connection_t *c; | |
301
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682 |
543 | 683 ls = cycle->listening.elts; |
301
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684 for (i = 0; i < cycle->listening.nelts; i++) { |
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685 |
543 | 686 c = ls[i].connection; |
301
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687 |
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688 if (c == NULL || c->read->active) { |
4618
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689 continue; |
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690 } |
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691 |
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692 if (ngx_add_event(c->read, NGX_READ_EVENT, 0) == NGX_ERROR) { |
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693 return NGX_ERROR; |
301
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694 } |
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695 } |
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696 |
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697 return NGX_OK; |
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698 } |
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699 |
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700 |
573 | 701 static ngx_int_t |
6153
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702 ngx_disable_accept_events(ngx_cycle_t *cycle, ngx_uint_t all) |
301
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703 { |
543 | 704 ngx_uint_t i; |
705 ngx_listening_t *ls; | |
706 ngx_connection_t *c; | |
301
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707 |
543 | 708 ls = cycle->listening.elts; |
301
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709 for (i = 0; i < cycle->listening.nelts; i++) { |
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710 |
543 | 711 c = ls[i].connection; |
712 | |
6153
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713 if (c == NULL || !c->read->active) { |
543 | 714 continue; |
715 } | |
301
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716 |
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717 #if (NGX_HAVE_REUSEPORT) |
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718 |
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719 /* |
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720 * do not disable accept on worker's own sockets |
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721 * when disabling accept events due to accept mutex |
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722 */ |
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723 |
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724 if (ls[i].reuseport && !all) { |
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725 continue; |
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|
726 } |
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727 |
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728 #endif |
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729 |
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730 if (ngx_del_event(c->read, NGX_READ_EVENT, NGX_DISABLE_EVENT) |
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731 == NGX_ERROR) |
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732 { |
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733 return NGX_ERROR; |
301
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734 } |
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735 } |
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736 |
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737 return NGX_OK; |
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738 } |
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739 |
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740 |
493 | 741 static void |
543 | 742 ngx_close_accepted_connection(ngx_connection_t *c) |
419
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743 { |
543 | 744 ngx_socket_t fd; |
745 | |
746 ngx_free_connection(c); | |
747 | |
748 fd = c->fd; | |
749 c->fd = (ngx_socket_t) -1; | |
750 | |
6436 | 751 if (!c->shared && ngx_close_socket(fd) == -1) { |
543 | 752 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno, |
419
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753 ngx_close_socket_n " failed"); |
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754 } |
495 | 755 |
543 | 756 if (c->pool) { |
757 ngx_destroy_pool(c->pool); | |
758 } | |
759 | |
495 | 760 #if (NGX_STAT_STUB) |
2951
5acd98486a33
ignore ngx_atomic_fetch_add() result
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761 (void) ngx_atomic_fetch_add(ngx_stat_active, -1); |
495 | 762 #endif |
419
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763 } |
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764 |
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765 |
543 | 766 u_char * |
493 | 767 ngx_accept_log_error(ngx_log_t *log, u_char *buf, size_t len) |
191
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768 { |
543 | 769 return ngx_snprintf(buf, len, " while accepting new connection on %V", |
770 log->data); | |
191
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771 } |
6436 | 772 |
773 | |
774 #if (NGX_DEBUG) | |
775 | |
776 static void | |
777 ngx_debug_accepted_connection(ngx_event_conf_t *ecf, ngx_connection_t *c) | |
778 { | |
779 struct sockaddr_in *sin; | |
780 ngx_cidr_t *cidr; | |
781 ngx_uint_t i; | |
782 #if (NGX_HAVE_INET6) | |
783 struct sockaddr_in6 *sin6; | |
784 ngx_uint_t n; | |
785 #endif | |
786 | |
787 cidr = ecf->debug_connection.elts; | |
788 for (i = 0; i < ecf->debug_connection.nelts; i++) { | |
789 if (cidr[i].family != (ngx_uint_t) c->sockaddr->sa_family) { | |
790 goto next; | |
791 } | |
792 | |
793 switch (cidr[i].family) { | |
794 | |
795 #if (NGX_HAVE_INET6) | |
796 case AF_INET6: | |
797 sin6 = (struct sockaddr_in6 *) c->sockaddr; | |
798 for (n = 0; n < 16; n++) { | |
799 if ((sin6->sin6_addr.s6_addr[n] | |
800 & cidr[i].u.in6.mask.s6_addr[n]) | |
801 != cidr[i].u.in6.addr.s6_addr[n]) | |
802 { | |
803 goto next; | |
804 } | |
805 } | |
806 break; | |
807 #endif | |
808 | |
809 #if (NGX_HAVE_UNIX_DOMAIN) | |
810 case AF_UNIX: | |
811 break; | |
812 #endif | |
813 | |
814 default: /* AF_INET */ | |
815 sin = (struct sockaddr_in *) c->sockaddr; | |
816 if ((sin->sin_addr.s_addr & cidr[i].u.in.mask) | |
817 != cidr[i].u.in.addr) | |
818 { | |
819 goto next; | |
820 } | |
821 break; | |
822 } | |
823 | |
824 c->log->log_level = NGX_LOG_DEBUG_CONNECTION|NGX_LOG_DEBUG_ALL; | |
825 break; | |
826 | |
827 next: | |
828 continue; | |
829 } | |
830 } | |
831 | |
832 #endif |