annotate src/core/ngx_connection.h @ 6733:adc2414856b1

Modules compatibility: compatibility with NGX_THREADS. With this change it is now possible to load modules compiled without the "--with-threads" configure option into nginx binary compiled with it, and vice versa (if a module does not use thread-specific functions), assuming both use the "--with-compat" option.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 10 Oct 2016 18:44:17 +0300
parents 48bab8b83f4e
children 0c572ed91b36
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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2 /*
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3 * Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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4 * Copyright (C) Nginx, Inc.
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5 */
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7
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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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
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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15
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16 typedef struct ngx_listening_s ngx_listening_t;
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17
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18 struct ngx_listening_s {
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19 ngx_socket_t fd;
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20
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21 struct sockaddr *sockaddr;
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22 socklen_t socklen; /* size of sockaddr */
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23 size_t addr_text_max_len;
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24 ngx_str_t addr_text;
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25
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26 int type;
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27
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28 int backlog;
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29 int rcvbuf;
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30 int sndbuf;
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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
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37 /* handler of accepted connection */
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38 ngx_connection_handler_pt handler;
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39
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40 void *servers; /* array of ngx_http_in_addr_t, for example */
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41
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42 ngx_log_t log;
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43 ngx_log_t *logp;
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44
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45 size_t pool_size;
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46 /* should be here because of the AcceptEx() preread */
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47 size_t post_accept_buffer_size;
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48 /* should be here because of the deferred accept */
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49 ngx_msec_t post_accept_timeout;
543
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50
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51 ngx_listening_t *previous;
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52 ngx_connection_t *connection;
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53
6153
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54 ngx_uint_t worker;
4f6efabcb09b The "reuseport" option of the "listen" directive.
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55
543
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56 unsigned open:1;
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57 unsigned remain:1;
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58 unsigned ignore:1;
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59
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60 unsigned bound:1; /* already bound */
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61 unsigned inherited:1; /* inherited from previous process */
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62 unsigned nonblocking_accept:1;
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63 unsigned listen:1;
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64 unsigned nonblocking:1;
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65 unsigned shared:1; /* shared between threads or processes */
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66 unsigned addr_ntop:1;
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67 unsigned wildcard:1;
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68
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69 #if (NGX_HAVE_INET6)
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70 unsigned ipv6only:1;
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71 #endif
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72 unsigned reuseport:1;
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73 unsigned add_reuseport:1;
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74 unsigned keepalive:2;
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75
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76 unsigned deferred_accept:1;
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77 unsigned delete_deferred:1;
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78 unsigned add_deferred:1;
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79 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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80 char *accept_filter;
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81 #endif
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82 #if (NGX_HAVE_SETFIB)
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83 int setfib;
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84 #endif
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85
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86 #if (NGX_HAVE_TCP_FASTOPEN)
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87 int fastopen;
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88 #endif
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89
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90 };
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91
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92
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93 typedef enum {
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94 NGX_ERROR_ALERT = 0,
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95 NGX_ERROR_ERR,
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96 NGX_ERROR_INFO,
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97 NGX_ERROR_IGNORE_ECONNRESET,
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98 NGX_ERROR_IGNORE_EINVAL
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99 } ngx_connection_log_error_e;
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100
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101
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102 typedef enum {
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103 NGX_TCP_NODELAY_UNSET = 0,
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104 NGX_TCP_NODELAY_SET,
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105 NGX_TCP_NODELAY_DISABLED
483
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106 } ngx_connection_tcp_nodelay_e;
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107
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108
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109 typedef enum {
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110 NGX_TCP_NOPUSH_UNSET = 0,
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111 NGX_TCP_NOPUSH_SET,
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112 NGX_TCP_NOPUSH_DISABLED
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113 } ngx_connection_tcp_nopush_e;
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114
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115
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116 #define NGX_LOWLEVEL_BUFFERED 0x0f
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117 #define NGX_SSL_BUFFERED 0x01
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118 #define NGX_HTTP_V2_BUFFERED 0x02
597
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119
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120
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121 struct ngx_connection_s {
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122 void *data;
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123 ngx_event_t *read;
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124 ngx_event_t *write;
103
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125
396
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126 ngx_socket_t fd;
103
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127
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128 ngx_recv_pt recv;
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371c1cee100d nginx-0.1.44-RELEASE import
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129 ngx_send_pt send;
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130 ngx_recv_chain_pt recv_chain;
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131 ngx_send_chain_pt send_chain;
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diff changeset
132
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
133 ngx_listening_t *listening;
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
134
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
135 off_t sent;
8
708f8bb772ec nginx-0.0.1-2002-09-02-18:48:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 7
diff changeset
136
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
137 ngx_log_t *log;
57
a499e0d1f16e nginx-0.0.1-2003-01-30-10:28:09 import
Igor Sysoev <igor@sysoev.ru>
parents: 44
diff changeset
138
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
139 ngx_pool_t *pool;
103
6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 101
diff changeset
140
6436
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
141 int type;
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
142
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
143 struct sockaddr *sockaddr;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
144 socklen_t socklen;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
145 ngx_str_t addr_text;
103
6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
parents: 101
diff changeset
146
5605
3a72b1805c52 Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents: 5513
diff changeset
147 ngx_str_t proxy_protocol_addr;
6561
28c76d9d75b7 Added the $proxy_protocol_port variable.
Dmitry Volyntsev <xeioex@nginx.com>
parents: 6555
diff changeset
148 in_port_t proxy_protocol_port;
5605
3a72b1805c52 Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents: 5513
diff changeset
149
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
150 #if (NGX_SSL)
547
818fbd4750b9 nginx-0.2.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
151 ngx_ssl_connection_t *ssl;
392
d1222d46b3f9 nginx-0.0.7-2004-07-15-00:07:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
152 #endif
d1222d46b3f9 nginx-0.0.7-2004-07-15-00:07:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
153
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
154 struct sockaddr *local_sockaddr;
5463
1ab1cf63f885 Core: keep the length of the local sockaddr.
Ruslan Ermilov <ru@nginx.com>
parents: 5456
diff changeset
155 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
156
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
157 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
158
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
159 ngx_queue_t queue;
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
160
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
161 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
162
2888
512d164a8348 keepalive_requests
Igor Sysoev <igor@sysoev.ru>
parents: 2854
diff changeset
163 ngx_uint_t requests;
512d164a8348 keepalive_requests
Igor Sysoev <igor@sysoev.ru>
parents: 2854
diff changeset
164
829
362d156f0278 high level HTTP buffered flags should be on per-subrequest basis,
Igor Sysoev <igor@sysoev.ru>
parents: 641
diff changeset
165 unsigned buffered:8;
597
9262f520ce21 nginx-0.3.20-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 583
diff changeset
166
2560
a7443674e429 ignore EINVAL from setsockopt() on Solaris
Igor Sysoev <igor@sysoev.ru>
parents: 2512
diff changeset
167 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
168
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
169 unsigned timedout:1;
583
4e296b7d25bf nginx-0.3.13-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
170 unsigned error:1;
4e296b7d25bf nginx-0.3.13-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
171 unsigned destroyed:1;
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
172
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
173 unsigned idle:1;
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
174 unsigned reusable:1;
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
175 unsigned close:1;
6436
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
176 unsigned shared:1;
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
177
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
178 unsigned sendfile:1;
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
179 unsigned sndlowat:1;
483
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
180 unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
181 unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
182
5513
311803b21504 SPDY: body filter was replaced by c->send_chain() function.
Valentin Bartenev <vbart@nginx.com>
parents: 5498
diff changeset
183 unsigned need_last_buf:1;
311803b21504 SPDY: body filter was replaced by c->send_chain() function.
Valentin Bartenev <vbart@nginx.com>
parents: 5498
diff changeset
184
3065
113cd532b328 aio sendfile
Igor Sysoev <igor@sysoev.ru>
parents: 2888
diff changeset
185 #if (NGX_HAVE_AIO_SENDFILE)
5498
d39a69427056 Allowed up to two EBUSY errors from sendfile().
Maxim Dounin <mdounin@mdounin.ru>
parents: 5463
diff changeset
186 unsigned busy_count:2;
3065
113cd532b328 aio sendfile
Igor Sysoev <igor@sysoev.ru>
parents: 2888
diff changeset
187 #endif
113cd532b328 aio sendfile
Igor Sysoev <igor@sysoev.ru>
parents: 2888
diff changeset
188
6733
adc2414856b1 Modules compatibility: compatibility with NGX_THREADS.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6721
diff changeset
189 #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
190 ngx_thread_task_t *sendfile_task;
b550563ef96e Added support for offloading Linux sendfile() in thread pools.
Valentin Bartenev <vbart@nginx.com>
parents: 6016
diff changeset
191 #endif
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
192 };
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
193
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
194
6129
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
195 #define ngx_set_connection_log(c, l) \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
196 \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
197 c->log->file = l->file; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
198 c->log->next = l->next; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
199 c->log->writer = l->writer; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
200 c->log->wdata = l->wdata; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
201 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
202 c->log->log_level = l->log_level; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
203 }
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
204
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
205
6555
090a78da4f88 Belatedly changed the ngx_create_listening() prototype.
Ruslan Ermilov <ru@nginx.com>
parents: 6532
diff changeset
206 ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr,
2806
a445bd4eb571 ngx_create_listening()
Igor Sysoev <igor@sysoev.ru>
parents: 2802
diff changeset
207 socklen_t socklen);
6153
4f6efabcb09b The "reuseport" option of the "listen" directive.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6129
diff changeset
208 ngx_int_t ngx_clone_listening(ngx_conf_t *cf, 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
209 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
210 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
2802
44b2081c015a use correct name
Igor Sysoev <igor@sysoev.ru>
parents: 2800
diff changeset
211 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
212 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
213 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
214 void ngx_close_idle_connections(ngx_cycle_t *cycle);
2854
d788477f5a67 ngx_connection_local_sockaddr()
Igor Sysoev <igor@sysoev.ru>
parents: 2806
diff changeset
215 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
216 ngx_uint_t port);
253
b6793bc5034b nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 219
diff changeset
217 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
218
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 539
diff changeset
219 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 539
diff changeset
220 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
221
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
222 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
223
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
224 #endif /* _NGX_CONNECTION_H_INCLUDED_ */