Mercurial > hg > nginx
annotate src/core/ngx_connection.h @ 9299:2706b60dc225
Core: error logging rate limiting.
With this change, error logging to files can be rate-limited with
the "rate=" parameter. The parameter specifies allowed log messages
rate to a particular file (per worker), in messages per second (m/s).
By default, "rate=1000m/s" is used.
Rate limiting is implemented using the "leaky bucket" method, similarly
to the limit_req module.
Maximum burst size is set to the number of log messages per second
for each severity level, so "error" messages are logged even if the
rate limit is hit by "info" messages (but not vice versa). When the
limit is reached for a particular level, the "too many log messages,
limiting" message is logged at this level.
If debug logging is enabled, either for the particular log file or for
the particular connection, rate limiting is not used.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 25 Jun 2024 22:58:56 +0300 |
parents | 1c9264603adc |
children |
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 #ifndef _NGX_CONNECTION_H_INCLUDED_ |
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9 #define _NGX_CONNECTION_H_INCLUDED_ |
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11 |
100
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12 #include <ngx_config.h> |
92
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13 #include <ngx_core.h> |
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14 |
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15 |
543 | 16 typedef struct ngx_listening_s ngx_listening_t; |
17 | |
18 struct ngx_listening_s { | |
19 ngx_socket_t fd; | |
103
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20 |
543 | 21 struct sockaddr *sockaddr; |
22 socklen_t socklen; /* size of sockaddr */ | |
23 size_t addr_text_max_len; | |
24 ngx_str_t addr_text; | |
103
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25 |
543 | 26 int type; |
563 | 27 |
543 | 28 int backlog; |
563 | 29 int rcvbuf; |
30 int sndbuf; | |
4323
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31 #if (NGX_HAVE_KEEPALIVE_TUNABLE) |
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32 int keepidle; |
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33 int keepintvl; |
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34 int keepcnt; |
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35 #endif |
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36 |
543 | 37 /* handler of accepted connection */ |
547 | 38 ngx_connection_handler_pt handler; |
543 | 39 |
40 void *servers; /* array of ngx_http_in_addr_t, for example */ | |
103
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41 |
543 | 42 ngx_log_t log; |
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43 ngx_log_t *logp; |
103
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44 |
543 | 45 size_t pool_size; |
46 /* should be here because of the AcceptEx() preread */ | |
47 size_t post_accept_buffer_size; | |
48 | |
49 ngx_listening_t *previous; | |
50 ngx_connection_t *connection; | |
103
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51 |
7286 | 52 ngx_rbtree_t rbtree; |
53 ngx_rbtree_node_t sentinel; | |
54 | |
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55 ngx_uint_t worker; |
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56 |
543 | 57 unsigned open:1; |
58 unsigned remain:1; | |
59 unsigned ignore:1; | |
109
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60 |
543 | 61 unsigned bound:1; /* already bound */ |
62 unsigned inherited:1; /* inherited from previous process */ | |
63 unsigned nonblocking_accept:1; | |
563 | 64 unsigned listen:1; |
543 | 65 unsigned nonblocking:1; |
66 unsigned shared:1; /* shared between threads or processes */ | |
67 unsigned addr_ntop:1; | |
6436 | 68 unsigned wildcard:1; |
523 | 69 |
6719
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Modules compatibility: removed unneeded IPV6_V6ONLY checks.
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70 #if (NGX_HAVE_INET6) |
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71 unsigned ipv6only:1; |
2562 | 72 #endif |
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73 unsigned reuseport:1; |
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74 unsigned add_reuseport:1; |
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75 unsigned keepalive:2; |
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76 unsigned quic:1; |
2562 | 77 |
543 | 78 unsigned deferred_accept:1; |
79 unsigned delete_deferred:1; | |
80 unsigned add_deferred:1; | |
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81 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) |
543 | 82 char *accept_filter; |
523 | 83 #endif |
3676 | 84 #if (NGX_HAVE_SETFIB) |
85 int setfib; | |
86 #endif | |
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87 |
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88 #if (NGX_HAVE_TCP_FASTOPEN) |
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89 int fastopen; |
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90 #endif |
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91 |
543 | 92 }; |
92
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93 |
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94 |
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95 typedef enum { |
6474 | 96 NGX_ERROR_ALERT = 0, |
97 NGX_ERROR_ERR, | |
98 NGX_ERROR_INFO, | |
99 NGX_ERROR_IGNORE_ECONNRESET, | |
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100 NGX_ERROR_IGNORE_EINVAL, |
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101 NGX_ERROR_IGNORE_EMSGSIZE, |
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102 NGX_ERROR_DEBUG |
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103 } ngx_connection_log_error_e; |
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104 |
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105 |
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106 typedef enum { |
6474 | 107 NGX_TCP_NODELAY_UNSET = 0, |
108 NGX_TCP_NODELAY_SET, | |
109 NGX_TCP_NODELAY_DISABLED | |
483 | 110 } ngx_connection_tcp_nodelay_e; |
111 | |
112 | |
113 typedef enum { | |
6474 | 114 NGX_TCP_NOPUSH_UNSET = 0, |
115 NGX_TCP_NOPUSH_SET, | |
116 NGX_TCP_NOPUSH_DISABLED | |
344
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117 } ngx_connection_tcp_nopush_e; |
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118 |
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119 |
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high level HTTP buffered flags should be on per-subrequest basis,
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120 #define NGX_LOWLEVEL_BUFFERED 0x0f |
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121 #define NGX_SSL_BUFFERED 0x01 |
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The HTTP/2 implementation (RFC 7240, 7241).
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122 #define NGX_HTTP_V2_BUFFERED 0x02 |
597 | 123 |
124 | |
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125 struct ngx_connection_s { |
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126 void *data; |
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127 ngx_event_t *read; |
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128 ngx_event_t *write; |
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129 |
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130 ngx_socket_t fd; |
103
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131 |
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132 ngx_recv_pt recv; |
539 | 133 ngx_send_pt send; |
577 | 134 ngx_recv_chain_pt recv_chain; |
396
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135 ngx_send_chain_pt send_chain; |
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136 |
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137 ngx_listening_t *listening; |
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138 |
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139 off_t sent; |
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140 |
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141 ngx_log_t *log; |
57
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142 |
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143 ngx_pool_t *pool; |
103
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144 |
6436 | 145 int type; |
146 | |
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147 struct sockaddr *sockaddr; |
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148 socklen_t socklen; |
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149 ngx_str_t addr_text; |
103
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150 |
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Core: moved PROXY protocol fields out of ngx_connection_t.
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151 ngx_proxy_protocol_t *proxy_protocol; |
5605
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Added server-side support for PROXY protocol v1 (ticket #355).
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152 |
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QUIC: added "quic" listen parameter.
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153 #if (NGX_QUIC || NGX_COMPAT) |
8637
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Core: reduced diff to the default branch.
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154 ngx_quic_stream_t *quic; |
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QUIC: added "quic" listen parameter.
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155 #endif |
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QUIC: added "quic" listen parameter.
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156 |
6735
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Modules compatibility: compatibility with NGX_HTTP_SSL.
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157 #if (NGX_SSL || NGX_COMPAT) |
547 | 158 ngx_ssl_connection_t *ssl; |
392
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159 #endif |
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160 |
7286 | 161 ngx_udp_connection_t *udp; |
162 | |
396
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163 struct sockaddr *local_sockaddr; |
5463
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Core: keep the length of the local sockaddr.
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164 socklen_t local_socklen; |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
101
diff
changeset
|
165 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
393
diff
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166 ngx_buf_t *buffer; |
8
708f8bb772ec
nginx-0.0.1-2002-09-02-18:48:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
7
diff
changeset
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167 |
3880
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reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents:
3676
diff
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|
168 ngx_queue_t queue; |
e3cb8e27e413
reuse keepalive connections if there are no free worker connections
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parents:
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diff
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169 |
495 | 170 ngx_atomic_uint_t number; |
26
53cb81681040
nginx-0.0.1-2002-12-15-09:25:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
24
diff
changeset
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171 |
7820
fdc3d40979b0
Introduced the "keepalive_time" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7762
diff
changeset
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172 ngx_msec_t start_time; |
2888 | 173 ngx_uint_t requests; |
174 | |
829
362d156f0278
high level HTTP buffered flags should be on per-subrequest basis,
Igor Sysoev <igor@sysoev.ru>
parents:
641
diff
changeset
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175 unsigned buffered:8; |
597 | 176 |
2560
a7443674e429
ignore EINVAL from setsockopt() on Solaris
Igor Sysoev <igor@sysoev.ru>
parents:
2512
diff
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177 unsigned log_error:3; /* ngx_connection_log_error_e */ |
256
8e39cab6abd5
nginx-0.0.2-2004-02-10-19:23:38 import
Igor Sysoev <igor@sysoev.ru>
parents:
253
diff
changeset
|
178 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
393
diff
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179 unsigned timedout:1; |
583 | 180 unsigned error:1; |
181 unsigned destroyed:1; | |
8125
cffaf3f2eec8
Lingering close for connections with pipelined requests.
Maxim Dounin <mdounin@mdounin.ru>
parents:
8006
diff
changeset
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182 unsigned pipeline:1; |
452 | 183 |
1135
03f1133f24e8
close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents:
829
diff
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184 unsigned idle:1; |
3880
e3cb8e27e413
reuse keepalive connections if there are no free worker connections
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parents:
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diff
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185 unsigned reusable:1; |
1135
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close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents:
829
diff
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186 unsigned close:1; |
6436 | 187 unsigned shared:1; |
1135
03f1133f24e8
close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents:
829
diff
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188 |
452 | 189 unsigned sendfile:1; |
190 unsigned sndlowat:1; | |
483 | 191 unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */ |
192 unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */ | |
452 | 193 |
5513
311803b21504
SPDY: body filter was replaced by c->send_chain() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5498
diff
changeset
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194 unsigned need_last_buf:1; |
8006
32b0ba4855a6
HTTP/2: made it possible to flush response headers (ticket #1743).
Maxim Dounin <mdounin@mdounin.ru>
parents:
7985
diff
changeset
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195 unsigned need_flush_buf:1; |
5513
311803b21504
SPDY: body filter was replaced by c->send_chain() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5498
diff
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196 |
7985
ec2e6893caaa
Simplified sendfile(SF_NODISKIO) usage.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7820
diff
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197 #if (NGX_HAVE_SENDFILE_NODISKIO || NGX_COMPAT) |
5498
d39a69427056
Allowed up to two EBUSY errors from sendfile().
Maxim Dounin <mdounin@mdounin.ru>
parents:
5463
diff
changeset
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198 unsigned busy_count:2; |
3065 | 199 #endif |
200 | |
6733
adc2414856b1
Modules compatibility: compatibility with NGX_THREADS.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6721
diff
changeset
|
201 #if (NGX_THREADS || NGX_COMPAT) |
6023
b550563ef96e
Added support for offloading Linux sendfile() in thread pools.
Valentin Bartenev <vbart@nginx.com>
parents:
6016
diff
changeset
|
202 ngx_thread_task_t *sendfile_task; |
b550563ef96e
Added support for offloading Linux sendfile() in thread pools.
Valentin Bartenev <vbart@nginx.com>
parents:
6016
diff
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|
203 #endif |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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204 }; |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
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205 |
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
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parents:
diff
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206 |
6129
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
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207 #define ngx_set_connection_log(c, l) \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
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208 \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
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diff
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209 c->log->file = l->file; \ |
9299
2706b60dc225
Core: error logging rate limiting.
Maxim Dounin <mdounin@mdounin.ru>
parents:
9225
diff
changeset
|
210 c->log->limit = l->limit; \ |
6129
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
211 c->log->next = l->next; \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
212 c->log->writer = l->writer; \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
213 c->log->wdata = l->wdata; \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
214 if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) { \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
215 c->log->log_level = l->log_level; \ |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
216 } |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
217 |
187aa751ad62
Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents:
6031
diff
changeset
|
218 |
6555
090a78da4f88
Belatedly changed the ngx_create_listening() prototype.
Ruslan Ermilov <ru@nginx.com>
parents:
6532
diff
changeset
|
219 ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr, |
2806 | 220 socklen_t socklen); |
7315
e7b2b907c0f8
Events: moved sockets cloning to ngx_event_init_conf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7286
diff
changeset
|
221 ngx_int_t ngx_clone_listening(ngx_cycle_t *cycle, ngx_listening_t *ls); |
219
f57597ec5249
nginx-0.0.1-2004-01-06-19:49:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
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222 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle); |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
216
diff
changeset
|
223 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle); |
2802 | 224 void ngx_configure_listening_sockets(ngx_cycle_t *cycle); |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
216
diff
changeset
|
225 void ngx_close_listening_sockets(ngx_cycle_t *cycle); |
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
399
diff
changeset
|
226 void ngx_close_connection(ngx_connection_t *c); |
6220
5e6142609e48
Core: idle connections now closed only once on exiting.
Valentin Bartenev <vbart@nginx.com>
parents:
6153
diff
changeset
|
227 void ngx_close_idle_connections(ngx_cycle_t *cycle); |
2854
d788477f5a67
ngx_connection_local_sockaddr()
Igor Sysoev <igor@sysoev.ru>
parents:
2806
diff
changeset
|
228 ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s, |
d788477f5a67
ngx_connection_local_sockaddr()
Igor Sysoev <igor@sysoev.ru>
parents:
2806
diff
changeset
|
229 ngx_uint_t port); |
7007
ed1101bbf19f
Introduced ngx_tcp_nodelay().
Ruslan Ermilov <ru@nginx.com>
parents:
6735
diff
changeset
|
230 ngx_int_t ngx_tcp_nodelay(ngx_connection_t *c); |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
219
diff
changeset
|
231 ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text); |
218
05592fd7a436
nginx-0.0.1-2004-01-05-23:55:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
216
diff
changeset
|
232 |
543 | 233 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log); |
234 void ngx_free_connection(ngx_connection_t *c); | |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
87
diff
changeset
|
235 |
3880
e3cb8e27e413
reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents:
3676
diff
changeset
|
236 void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable); |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
87
diff
changeset
|
237 |
0
4eff17414a43
nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
238 #endif /* _NGX_CONNECTION_H_INCLUDED_ */ |