annotate src/core/ngx_connection.h @ 7690:8253424d1aff

Added size check to ngx_http_alloc_large_header_buffer(). This ensures that copying won't write more than the buffer size even if the buffer comes from hc->free and it is smaller than the large client header buffer size in the virtual host configuration. This might happen if size of large client header buffers is different in name-based virtual hosts, similarly to the problem with number of buffers fixed in 6926:e662cbf1b932.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 06 Aug 2020 05:02:22 +0300
parents 06b01840bd42
children 4e141d0816d4 5d91389e0fd3
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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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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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;
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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
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54 ngx_rbtree_t rbtree;
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55 ngx_rbtree_node_t sentinel;
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56
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57 ngx_uint_t worker;
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58
543
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59 unsigned open:1;
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60 unsigned remain:1;
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61 unsigned ignore:1;
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62
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63 unsigned bound:1; /* already bound */
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64 unsigned inherited:1; /* inherited from previous process */
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65 unsigned nonblocking_accept:1;
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66 unsigned listen:1;
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67 unsigned nonblocking:1;
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68 unsigned shared:1; /* shared between threads or processes */
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69 unsigned addr_ntop:1;
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70 unsigned wildcard:1;
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71
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72 #if (NGX_HAVE_INET6)
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73 unsigned ipv6only:1;
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74 #endif
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75 unsigned reuseport:1;
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76 unsigned add_reuseport:1;
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77 unsigned keepalive:2;
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78
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79 unsigned deferred_accept:1;
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80 unsigned delete_deferred:1;
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81 unsigned add_deferred:1;
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82 #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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83 char *accept_filter;
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84 #endif
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85 #if (NGX_HAVE_SETFIB)
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86 int setfib;
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87 #endif
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88
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89 #if (NGX_HAVE_TCP_FASTOPEN)
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90 int fastopen;
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91 #endif
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92
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93 };
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94
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95
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96 typedef enum {
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97 NGX_ERROR_ALERT = 0,
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98 NGX_ERROR_ERR,
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99 NGX_ERROR_INFO,
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100 NGX_ERROR_IGNORE_ECONNRESET,
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101 NGX_ERROR_IGNORE_EINVAL
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102 } ngx_connection_log_error_e;
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103
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104
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105 typedef enum {
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106 NGX_TCP_NODELAY_UNSET = 0,
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107 NGX_TCP_NODELAY_SET,
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108 NGX_TCP_NODELAY_DISABLED
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109 } ngx_connection_tcp_nodelay_e;
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110
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111
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112 typedef enum {
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113 NGX_TCP_NOPUSH_UNSET = 0,
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114 NGX_TCP_NOPUSH_SET,
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115 NGX_TCP_NOPUSH_DISABLED
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116 } ngx_connection_tcp_nopush_e;
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117
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118
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119 #define NGX_LOWLEVEL_BUFFERED 0x0f
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120 #define NGX_SSL_BUFFERED 0x01
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121 #define NGX_HTTP_V2_BUFFERED 0x02
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122
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123
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124 struct ngx_connection_s {
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125 void *data;
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126 ngx_event_t *read;
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127 ngx_event_t *write;
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128
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129 ngx_socket_t fd;
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130
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131 ngx_recv_pt recv;
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132 ngx_send_pt send;
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
133 ngx_recv_chain_pt recv_chain;
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
134 ngx_send_chain_pt send_chain;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
135
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
136 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
137
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
138 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
139
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
140 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
141
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
142 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
143
6436
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
144 int type;
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
145
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
146 struct sockaddr *sockaddr;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
147 socklen_t socklen;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
148 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
149
7590
06b01840bd42 Core: moved PROXY protocol fields out of ngx_connection_t.
Roman Arutyunyan <arut@nginx.com>
parents: 7315
diff changeset
150 ngx_proxy_protocol_t *proxy_protocol;
5605
3a72b1805c52 Added server-side support for PROXY protocol v1 (ticket #355).
Roman Arutyunyan <arut@nginx.com>
parents: 5513
diff changeset
151
6735
e38e9c50a40e Modules compatibility: compatibility with NGX_HTTP_SSL.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6734
diff changeset
152 #if (NGX_SSL || NGX_COMPAT)
547
818fbd4750b9 nginx-0.2.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 543
diff changeset
153 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
154 #endif
d1222d46b3f9 nginx-0.0.7-2004-07-15-00:07:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 380
diff changeset
155
7286
d27aa9060c95 Stream: udp streams.
Roman Arutyunyan <arut@nginx.com>
parents: 7007
diff changeset
156 ngx_udp_connection_t *udp;
d27aa9060c95 Stream: udp streams.
Roman Arutyunyan <arut@nginx.com>
parents: 7007
diff changeset
157
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
158 struct sockaddr *local_sockaddr;
5463
1ab1cf63f885 Core: keep the length of the local sockaddr.
Ruslan Ermilov <ru@nginx.com>
parents: 5456
diff changeset
159 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
160
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
161 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
162
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
163 ngx_queue_t queue;
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
164
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
165 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
166
2888
512d164a8348 keepalive_requests
Igor Sysoev <igor@sysoev.ru>
parents: 2854
diff changeset
167 ngx_uint_t requests;
512d164a8348 keepalive_requests
Igor Sysoev <igor@sysoev.ru>
parents: 2854
diff changeset
168
829
362d156f0278 high level HTTP buffered flags should be on per-subrequest basis,
Igor Sysoev <igor@sysoev.ru>
parents: 641
diff changeset
169 unsigned buffered:8;
597
9262f520ce21 nginx-0.3.20-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 583
diff changeset
170
2560
a7443674e429 ignore EINVAL from setsockopt() on Solaris
Igor Sysoev <igor@sysoev.ru>
parents: 2512
diff changeset
171 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
172
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 393
diff changeset
173 unsigned timedout:1;
583
4e296b7d25bf nginx-0.3.13-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
174 unsigned error:1;
4e296b7d25bf nginx-0.3.13-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
175 unsigned destroyed:1;
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
176
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
177 unsigned idle:1;
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
178 unsigned reusable:1;
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
179 unsigned close:1;
6436
8f038068f4bc Stream: UDP proxy.
Roman Arutyunyan <arut@nginx.com>
parents: 6246
diff changeset
180 unsigned shared:1;
1135
03f1133f24e8 close keep-alive connections in the shuting down processes
Igor Sysoev <igor@sysoev.ru>
parents: 829
diff changeset
181
452
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
182 unsigned sendfile:1;
23fb87bddda1 nginx-0.1.1-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
183 unsigned sndlowat:1;
483
621229427cba nginx-0.1.16-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
184 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
185 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
186
5513
311803b21504 SPDY: body filter was replaced by c->send_chain() function.
Valentin Bartenev <vbart@nginx.com>
parents: 5498
diff changeset
187 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
188
6734
0c572ed91b36 Modules compatibility: compatibility with NGX_HAVE_FILE_AIO.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6733
diff changeset
189 #if (NGX_HAVE_AIO_SENDFILE || NGX_COMPAT)
5498
d39a69427056 Allowed up to two EBUSY errors from sendfile().
Maxim Dounin <mdounin@mdounin.ru>
parents: 5463
diff changeset
190 unsigned busy_count:2;
3065
113cd532b328 aio sendfile
Igor Sysoev <igor@sysoev.ru>
parents: 2888
diff changeset
191 #endif
113cd532b328 aio sendfile
Igor Sysoev <igor@sysoev.ru>
parents: 2888
diff changeset
192
6733
adc2414856b1 Modules compatibility: compatibility with NGX_THREADS.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6721
diff changeset
193 #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
194 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
195 #endif
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
196 };
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
197
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
198
6129
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
199 #define ngx_set_connection_log(c, l) \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
200 \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
201 c->log->file = l->file; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
202 c->log->next = l->next; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
203 c->log->writer = l->writer; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
204 c->log->wdata = l->wdata; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
205 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
206 c->log->log_level = l->log_level; \
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
207 }
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
208
187aa751ad62 Core: the ngx_set_connection_log() macro.
Vladimir Homutov <vl@nginx.com>
parents: 6031
diff changeset
209
6555
090a78da4f88 Belatedly changed the ngx_create_listening() prototype.
Ruslan Ermilov <ru@nginx.com>
parents: 6532
diff changeset
210 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
211 socklen_t socklen);
7315
e7b2b907c0f8 Events: moved sockets cloning to ngx_event_init_conf().
Maxim Dounin <mdounin@mdounin.ru>
parents: 7286
diff changeset
212 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
213 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
214 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
215 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
216 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
217 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
218 void ngx_close_idle_connections(ngx_cycle_t *cycle);
2854
d788477f5a67 ngx_connection_local_sockaddr()
Igor Sysoev <igor@sysoev.ru>
parents: 2806
diff changeset
219 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
220 ngx_uint_t port);
7007
ed1101bbf19f Introduced ngx_tcp_nodelay().
Ruslan Ermilov <ru@nginx.com>
parents: 6735
diff changeset
221 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
222 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
223
543
511a89da35ad nginx-0.2.0-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 539
diff changeset
224 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
225 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
226
3880
e3cb8e27e413 reuse keepalive connections if there are no free worker connections
Igor Sysoev <igor@sysoev.ru>
parents: 3676
diff changeset
227 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
228
0
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
229 #endif /* _NGX_CONNECTION_H_INCLUDED_ */