Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.h @ 5951:610832763648
Upstream: added variables support to proxy_cache and friends.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Mon, 22 Dec 2014 12:59:09 +0300 |
parents | 634da79665d3 |
children | 0a198a517eaf |
rev | line source |
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479 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
479 | 5 */ |
6 | |
7 | |
8 #ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
9 #define _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
10 | |
11 | |
12 #include <ngx_config.h> | |
13 #include <ngx_core.h> | |
14 #include <ngx_event.h> | |
15 #include <ngx_event_connect.h> | |
16 #include <ngx_event_pipe.h> | |
17 #include <ngx_http.h> | |
18 | |
19 | |
665 | 20 #define NGX_HTTP_UPSTREAM_FT_ERROR 0x00000002 |
21 #define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x00000004 | |
22 #define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x00000008 | |
23 #define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x00000010 | |
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24 #define NGX_HTTP_UPSTREAM_FT_HTTP_502 0x00000020 |
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25 #define NGX_HTTP_UPSTREAM_FT_HTTP_503 0x00000040 |
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26 #define NGX_HTTP_UPSTREAM_FT_HTTP_504 0x00000080 |
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27 #define NGX_HTTP_UPSTREAM_FT_HTTP_403 0x00000100 |
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28 #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000200 |
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29 #define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000400 |
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30 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000800 |
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31 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00001000 |
1378 | 32 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000 |
665 | 33 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000 |
479 | 34 |
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35 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \ |
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \ |
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37 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \ |
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38 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \ |
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39 |NGX_HTTP_UPSTREAM_FT_HTTP_403 \ |
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40 |NGX_HTTP_UPSTREAM_FT_HTTP_404) |
479 | 41 |
42 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40 | |
43 | |
44 | |
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45 #define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002 |
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46 #define NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 0x00000004 |
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47 #define NGX_HTTP_UPSTREAM_IGN_EXPIRES 0x00000008 |
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48 #define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL 0x00000010 |
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49 #define NGX_HTTP_UPSTREAM_IGN_SET_COOKIE 0x00000020 |
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50 #define NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE 0x00000040 |
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51 #define NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING 0x00000080 |
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52 #define NGX_HTTP_UPSTREAM_IGN_XA_CHARSET 0x00000100 |
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53 #define NGX_HTTP_UPSTREAM_IGN_VARY 0x00000200 |
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54 |
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55 |
479 | 56 typedef struct { |
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57 ngx_msec_t bl_time; |
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58 ngx_uint_t bl_state; |
479 | 59 |
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60 ngx_uint_t status; |
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61 time_t response_sec; |
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62 ngx_uint_t response_msec; |
3795 | 63 off_t response_length; |
563 | 64 |
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65 ngx_str_t *peer; |
479 | 66 } ngx_http_upstream_state_t; |
67 | |
68 | |
69 typedef struct { | |
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70 ngx_hash_t headers_in_hash; |
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71 ngx_array_t upstreams; |
884 | 72 /* ngx_http_upstream_srv_conf_t */ |
509 | 73 } ngx_http_upstream_main_conf_t; |
74 | |
884 | 75 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
76 | |
77 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
78 ngx_http_upstream_srv_conf_t *us); | |
79 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
80 ngx_http_upstream_srv_conf_t *us); | |
81 | |
82 | |
83 typedef struct { | |
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84 ngx_http_upstream_init_pt init_upstream; |
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85 ngx_http_upstream_init_peer_pt init; |
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86 void *data; |
884 | 87 } ngx_http_upstream_peer_t; |
88 | |
509 | 89 |
90 typedef struct { | |
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91 ngx_str_t name; |
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92 ngx_addr_t *addrs; |
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93 ngx_uint_t naddrs; |
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94 ngx_uint_t weight; |
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95 ngx_uint_t max_fails; |
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96 time_t fail_timeout; |
884 | 97 |
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98 unsigned down:1; |
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99 unsigned backup:1; |
884 | 100 } ngx_http_upstream_server_t; |
101 | |
651 | 102 |
884 | 103 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
104 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
105 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
106 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
107 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
108 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
109 | |
651 | 110 |
884 | 111 struct ngx_http_upstream_srv_conf_s { |
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112 ngx_http_upstream_peer_t peer; |
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113 void **srv_conf; |
884 | 114 |
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115 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
884 | 116 |
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117 ngx_uint_t flags; |
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118 ngx_str_t host; |
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119 u_char *file_name; |
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120 ngx_uint_t line; |
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121 in_port_t port; |
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122 in_port_t default_port; |
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123 ngx_uint_t no_port; /* unsigned no_port:1 */ |
884 | 124 }; |
651 | 125 |
126 | |
127 typedef struct { | |
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128 ngx_addr_t *addr; |
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129 ngx_http_complex_value_t *value; |
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130 } ngx_http_upstream_local_t; |
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131 |
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132 |
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133 typedef struct { |
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134 ngx_http_upstream_srv_conf_t *upstream; |
884 | 135 |
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136 ngx_msec_t connect_timeout; |
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137 ngx_msec_t send_timeout; |
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138 ngx_msec_t read_timeout; |
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139 ngx_msec_t timeout; |
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140 ngx_msec_t next_upstream_timeout; |
479 | 141 |
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142 size_t send_lowat; |
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143 size_t buffer_size; |
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144 size_t limit_rate; |
529 | 145 |
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146 size_t busy_buffers_size; |
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147 size_t max_temp_file_size; |
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148 size_t temp_file_write_size; |
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149 |
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150 size_t busy_buffers_size_conf; |
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151 size_t max_temp_file_size_conf; |
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152 size_t temp_file_write_size_conf; |
509 | 153 |
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154 ngx_bufs_t bufs; |
529 | 155 |
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156 ngx_uint_t ignore_headers; |
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157 ngx_uint_t next_upstream; |
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158 ngx_uint_t store_access; |
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159 ngx_uint_t next_upstream_tries; |
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160 ngx_flag_t buffering; |
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161 ngx_flag_t pass_request_headers; |
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162 ngx_flag_t pass_request_body; |
479 | 163 |
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164 ngx_flag_t ignore_client_abort; |
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165 ngx_flag_t intercept_errors; |
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166 ngx_flag_t cyclic_temp_file; |
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167 ngx_flag_t force_ranges; |
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168 |
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169 ngx_path_t *temp_path; |
479 | 170 |
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171 ngx_hash_t hide_headers_hash; |
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172 ngx_array_t *hide_headers; |
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173 ngx_array_t *pass_headers; |
509 | 174 |
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175 ngx_http_upstream_local_t *local; |
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176 |
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177 #if (NGX_HTTP_CACHE) |
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178 ngx_shm_zone_t *cache_zone; |
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179 ngx_http_complex_value_t *cache_value; |
479 | 180 |
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181 ngx_uint_t cache_min_uses; |
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182 ngx_uint_t cache_use_stale; |
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183 ngx_uint_t cache_methods; |
479 | 184 |
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185 ngx_flag_t cache_lock; |
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186 ngx_msec_t cache_lock_timeout; |
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187 ngx_msec_t cache_lock_age; |
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188 |
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189 ngx_flag_t cache_revalidate; |
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190 |
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191 ngx_array_t *cache_valid; |
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192 ngx_array_t *cache_bypass; |
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193 ngx_array_t *no_cache; |
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194 #endif |
509 | 195 |
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196 ngx_array_t *store_lengths; |
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197 ngx_array_t *store_values; |
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198 |
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199 #if (NGX_HTTP_CACHE) |
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200 signed cache:2; |
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201 #endif |
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202 signed store:2; |
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203 unsigned intercept_404:1; |
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204 unsigned change_buffering:1; |
581 | 205 |
577 | 206 #if (NGX_HTTP_SSL) |
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207 ngx_ssl_t *ssl; |
2754 | 208 ngx_flag_t ssl_session_reuse; |
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209 |
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210 ngx_http_complex_value_t *ssl_name; |
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211 ngx_flag_t ssl_server_name; |
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212 ngx_flag_t ssl_verify; |
577 | 213 #endif |
214 | |
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215 ngx_str_t module; |
479 | 216 } ngx_http_upstream_conf_t; |
217 | |
218 | |
509 | 219 typedef struct { |
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220 ngx_str_t name; |
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221 ngx_http_header_handler_pt handler; |
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222 ngx_uint_t offset; |
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223 ngx_http_header_handler_pt copy_handler; |
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224 ngx_uint_t conf; |
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225 ngx_uint_t redirect; /* unsigned redirect:1; */ |
509 | 226 } ngx_http_upstream_header_t; |
227 | |
228 | |
229 typedef struct { | |
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230 ngx_list_t headers; |
509 | 231 |
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232 ngx_uint_t status_n; |
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233 ngx_str_t status_line; |
529 | 234 |
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235 ngx_table_elt_t *status; |
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236 ngx_table_elt_t *date; |
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237 ngx_table_elt_t *server; |
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238 ngx_table_elt_t *connection; |
509 | 239 |
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240 ngx_table_elt_t *expires; |
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241 ngx_table_elt_t *etag; |
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242 ngx_table_elt_t *x_accel_expires; |
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243 ngx_table_elt_t *x_accel_redirect; |
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244 ngx_table_elt_t *x_accel_limit_rate; |
509 | 245 |
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246 ngx_table_elt_t *content_type; |
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247 ngx_table_elt_t *content_length; |
509 | 248 |
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249 ngx_table_elt_t *last_modified; |
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250 ngx_table_elt_t *location; |
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251 ngx_table_elt_t *accept_ranges; |
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252 ngx_table_elt_t *www_authenticate; |
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253 ngx_table_elt_t *transfer_encoding; |
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254 ngx_table_elt_t *vary; |
509 | 255 |
256 #if (NGX_HTTP_GZIP) | |
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257 ngx_table_elt_t *content_encoding; |
509 | 258 #endif |
259 | |
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260 ngx_array_t cache_control; |
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261 ngx_array_t cookies; |
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262 |
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263 off_t content_length_n; |
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264 time_t last_modified_time; |
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265 |
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266 unsigned connection_close:1; |
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267 unsigned chunked:1; |
509 | 268 } ngx_http_upstream_headers_in_t; |
269 | |
479 | 270 |
1658 | 271 typedef struct { |
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272 ngx_str_t host; |
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273 in_port_t port; |
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274 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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275 |
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276 ngx_uint_t naddrs; |
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277 ngx_addr_t *addrs; |
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278 |
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279 struct sockaddr *sockaddr; |
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280 socklen_t socklen; |
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281 |
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282 ngx_resolver_ctx_t *ctx; |
1658 | 283 } ngx_http_upstream_resolved_t; |
284 | |
285 | |
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286 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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287 ngx_http_upstream_t *u); |
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288 |
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289 |
479 | 290 struct ngx_http_upstream_s { |
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291 ngx_http_upstream_handler_pt read_event_handler; |
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292 ngx_http_upstream_handler_pt write_event_handler; |
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293 |
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294 ngx_peer_connection_t peer; |
479 | 295 |
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296 ngx_event_pipe_t *pipe; |
479 | 297 |
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298 ngx_chain_t *request_bufs; |
479 | 299 |
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300 ngx_output_chain_ctx_t output; |
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301 ngx_chain_writer_ctx_t writer; |
479 | 302 |
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303 ngx_http_upstream_conf_t *conf; |
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304 #if (NGX_HTTP_CACHE) |
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305 ngx_array_t *caches; |
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306 #endif |
479 | 307 |
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308 ngx_http_upstream_headers_in_t headers_in; |
509 | 309 |
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310 ngx_http_upstream_resolved_t *resolved; |
1658 | 311 |
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312 ngx_buf_t from_client; |
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313 |
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314 ngx_buf_t buffer; |
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315 off_t length; |
581 | 316 |
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317 ngx_chain_t *out_bufs; |
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318 ngx_chain_t *busy_bufs; |
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319 ngx_chain_t *free_bufs; |
581 | 320 |
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321 ngx_int_t (*input_filter_init)(void *data); |
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322 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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323 void *input_filter_ctx; |
479 | 324 |
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325 #if (NGX_HTTP_CACHE) |
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326 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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327 #endif |
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328 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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329 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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330 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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331 void (*abort_request)(ngx_http_request_t *r); |
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332 void (*finalize_request)(ngx_http_request_t *r, |
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333 ngx_int_t rc); |
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334 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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335 ngx_table_elt_t *h, size_t prefix); |
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336 ngx_int_t (*rewrite_cookie)(ngx_http_request_t *r, |
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337 ngx_table_elt_t *h); |
479 | 338 |
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339 ngx_msec_t timeout; |
527 | 340 |
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341 ngx_http_upstream_state_t *state; |
479 | 342 |
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343 ngx_str_t method; |
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344 ngx_str_t schema; |
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345 ngx_str_t uri; |
555 | 346 |
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347 #if (NGX_HTTP_SSL) |
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348 ngx_str_t ssl_name; |
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349 #endif |
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350 |
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351 ngx_http_cleanup_pt *cleanup; |
569 | 352 |
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353 unsigned store:1; |
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354 unsigned cacheable:1; |
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355 unsigned accel:1; |
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356 unsigned ssl:1; |
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357 #if (NGX_HTTP_CACHE) |
2952 | 358 unsigned cache_status:3; |
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359 #endif |
479 | 360 |
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361 unsigned buffering:1; |
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362 unsigned keepalive:1; |
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363 unsigned upgrade:1; |
649 | 364 |
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365 unsigned request_sent:1; |
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366 unsigned header_sent:1; |
479 | 367 }; |
368 | |
369 | |
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370 typedef struct { |
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371 ngx_uint_t status; |
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372 ngx_uint_t mask; |
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373 } ngx_http_upstream_next_t; |
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374 |
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375 |
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376 typedef struct { |
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377 ngx_str_t key; |
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378 ngx_str_t value; |
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379 ngx_uint_t skip_empty; |
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380 } ngx_http_upstream_param_t; |
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381 |
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382 |
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383 ngx_int_t ngx_http_upstream_cookie_variable(ngx_http_request_t *r, |
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384 ngx_http_variable_value_t *v, uintptr_t data); |
1162 | 385 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
386 ngx_http_variable_value_t *v, uintptr_t data); | |
387 | |
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388 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r); |
479 | 389 void ngx_http_upstream_init(ngx_http_request_t *r); |
651 | 390 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
884 | 391 ngx_url_t *u, ngx_uint_t flags); |
3399 | 392 char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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393 void *conf); |
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394 char *ngx_http_upstream_param_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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395 void *conf); |
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396 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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397 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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398 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
884 | 399 |
400 | |
401 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
402 uscf->srv_conf[module.ctx_index] | |
509 | 403 |
479 | 404 |
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405 extern ngx_module_t ngx_http_upstream_module; |
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406 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[]; |
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407 extern ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[]; |
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408 |
479 | 409 |
410 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |