Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream.h @ 3126:a1cc758ca002 stable-0.7
release-0.7.62 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 14 Sep 2009 13:09:55 +0000 |
parents | 4f28e63e42b4 |
children | 95972b9e790b |
rev | line source |
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479 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
8 #define _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
9 | |
10 | |
11 #include <ngx_config.h> | |
12 #include <ngx_core.h> | |
13 #include <ngx_event.h> | |
14 #include <ngx_event_connect.h> | |
15 #include <ngx_event_pipe.h> | |
16 #include <ngx_http.h> | |
17 | |
18 | |
665 | 19 #define NGX_HTTP_UPSTREAM_FT_ERROR 0x00000002 |
20 #define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x00000004 | |
21 #define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x00000008 | |
22 #define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x00000010 | |
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23 #define NGX_HTTP_UPSTREAM_FT_HTTP_502 0x00000020 |
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24 #define NGX_HTTP_UPSTREAM_FT_HTTP_503 0x00000040 |
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25 #define NGX_HTTP_UPSTREAM_FT_HTTP_504 0x00000080 |
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26 #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000100 |
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27 #define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000200 |
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28 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000400 |
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29 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000800 |
1378 | 30 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000 |
665 | 31 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000 |
479 | 32 |
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33 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \ |
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34 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \ |
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35 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \ |
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \ |
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37 |NGX_HTTP_UPSTREAM_FT_HTTP_404) |
479 | 38 |
39 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40 | |
40 | |
41 | |
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42 #define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002 |
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43 #define NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 0x00000004 |
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44 #define NGX_HTTP_UPSTREAM_IGN_EXPIRES 0x00000008 |
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45 #define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL 0x00000010 |
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46 |
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47 |
479 | 48 typedef struct { |
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49 ngx_msec_t bl_time; |
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50 ngx_uint_t bl_state; |
479 | 51 |
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52 ngx_uint_t status; |
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53 time_t response_sec; |
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54 ngx_uint_t response_msec; |
2402 | 55 off_t response_length; |
563 | 56 |
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57 ngx_str_t *peer; |
479 | 58 } ngx_http_upstream_state_t; |
59 | |
60 | |
61 typedef struct { | |
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62 ngx_hash_t headers_in_hash; |
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63 ngx_array_t upstreams; |
884 | 64 /* ngx_http_upstream_srv_conf_t */ |
509 | 65 } ngx_http_upstream_main_conf_t; |
66 | |
884 | 67 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
68 | |
69 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
70 ngx_http_upstream_srv_conf_t *us); | |
71 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
72 ngx_http_upstream_srv_conf_t *us); | |
73 | |
74 | |
75 typedef struct { | |
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76 ngx_http_upstream_init_pt init_upstream; |
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77 ngx_http_upstream_init_peer_pt init; |
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78 void *data; |
884 | 79 } ngx_http_upstream_peer_t; |
80 | |
509 | 81 |
82 typedef struct { | |
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83 ngx_peer_addr_t *addrs; |
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84 ngx_uint_t naddrs; |
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85 ngx_uint_t weight; |
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86 ngx_uint_t max_fails; |
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87 time_t fail_timeout; |
884 | 88 |
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89 unsigned down:1; |
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90 unsigned backup:1; |
884 | 91 } ngx_http_upstream_server_t; |
92 | |
651 | 93 |
884 | 94 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
95 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
96 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
97 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
98 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
99 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
100 | |
651 | 101 |
884 | 102 struct ngx_http_upstream_srv_conf_s { |
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103 ngx_http_upstream_peer_t peer; |
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104 void **srv_conf; |
884 | 105 |
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106 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
884 | 107 |
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108 ngx_uint_t flags; |
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109 ngx_str_t host; |
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110 u_char *file_name; |
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111 ngx_uint_t line; |
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112 in_port_t port; |
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113 in_port_t default_port; |
884 | 114 }; |
651 | 115 |
116 | |
117 typedef struct { | |
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118 ngx_http_upstream_srv_conf_t *upstream; |
884 | 119 |
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120 ngx_msec_t connect_timeout; |
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121 ngx_msec_t send_timeout; |
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122 ngx_msec_t read_timeout; |
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123 ngx_msec_t timeout; |
479 | 124 |
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125 size_t send_lowat; |
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126 size_t buffer_size; |
529 | 127 |
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128 size_t busy_buffers_size; |
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129 size_t max_temp_file_size; |
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130 size_t temp_file_write_size; |
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131 |
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132 size_t busy_buffers_size_conf; |
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133 size_t max_temp_file_size_conf; |
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134 size_t temp_file_write_size_conf; |
509 | 135 |
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136 ngx_bufs_t bufs; |
529 | 137 |
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138 ngx_uint_t ignore_headers; |
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139 ngx_uint_t next_upstream; |
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140 ngx_uint_t store_access; |
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141 ngx_flag_t buffering; |
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142 ngx_flag_t pass_request_headers; |
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143 ngx_flag_t pass_request_body; |
479 | 144 |
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145 ngx_flag_t ignore_client_abort; |
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146 ngx_flag_t intercept_errors; |
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147 ngx_flag_t cyclic_temp_file; |
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148 |
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149 ngx_path_t *temp_path; |
479 | 150 |
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151 ngx_hash_t hide_headers_hash; |
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152 ngx_array_t *hide_headers; |
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153 ngx_array_t *pass_headers; |
509 | 154 |
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155 #if (NGX_HTTP_CACHE) |
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156 ngx_shm_zone_t *cache; |
479 | 157 |
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158 ngx_uint_t cache_min_uses; |
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159 ngx_uint_t cache_use_stale; |
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160 ngx_uint_t cache_methods; |
479 | 161 |
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162 ngx_array_t *cache_valid; |
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163 #endif |
509 | 164 |
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165 ngx_array_t *store_lengths; |
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166 ngx_array_t *store_values; |
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167 |
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168 signed store:2; |
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169 unsigned intercept_404:1; |
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170 unsigned change_buffering:1; |
581 | 171 |
577 | 172 #if (NGX_HTTP_SSL) |
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173 ngx_ssl_t *ssl; |
2754 | 174 ngx_flag_t ssl_session_reuse; |
577 | 175 #endif |
176 | |
479 | 177 } ngx_http_upstream_conf_t; |
178 | |
179 | |
509 | 180 typedef struct { |
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181 ngx_str_t name; |
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182 ngx_http_header_handler_pt handler; |
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183 ngx_uint_t offset; |
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184 ngx_http_header_handler_pt copy_handler; |
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185 ngx_uint_t conf; |
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186 ngx_uint_t redirect; /* unsigned redirect:1; */ |
509 | 187 } ngx_http_upstream_header_t; |
188 | |
189 | |
190 typedef struct { | |
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191 ngx_list_t headers; |
509 | 192 |
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193 ngx_uint_t status_n; |
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194 ngx_str_t status_line; |
529 | 195 |
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196 ngx_table_elt_t *status; |
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197 ngx_table_elt_t *date; |
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198 ngx_table_elt_t *server; |
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199 ngx_table_elt_t *connection; |
509 | 200 |
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201 ngx_table_elt_t *expires; |
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202 ngx_table_elt_t *etag; |
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203 ngx_table_elt_t *x_accel_expires; |
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204 ngx_table_elt_t *x_accel_redirect; |
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205 ngx_table_elt_t *x_accel_limit_rate; |
509 | 206 |
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207 ngx_table_elt_t *content_type; |
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208 ngx_table_elt_t *content_length; |
509 | 209 |
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210 ngx_table_elt_t *last_modified; |
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211 ngx_table_elt_t *location; |
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212 ngx_table_elt_t *accept_ranges; |
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213 ngx_table_elt_t *www_authenticate; |
509 | 214 |
215 #if (NGX_HTTP_GZIP) | |
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216 ngx_table_elt_t *content_encoding; |
509 | 217 #endif |
218 | |
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219 off_t content_length_n; |
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220 |
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221 ngx_array_t cache_control; |
509 | 222 } ngx_http_upstream_headers_in_t; |
223 | |
479 | 224 |
1658 | 225 typedef struct { |
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226 ngx_str_t host; |
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227 in_port_t port; |
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228 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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229 |
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230 ngx_uint_t naddrs; |
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231 in_addr_t *addrs; |
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232 |
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233 struct sockaddr *sockaddr; |
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234 socklen_t socklen; |
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235 |
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236 ngx_resolver_ctx_t *ctx; |
1658 | 237 } ngx_http_upstream_resolved_t; |
238 | |
239 | |
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240 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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241 ngx_http_upstream_t *u); |
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242 |
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243 |
479 | 244 struct ngx_http_upstream_s { |
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245 ngx_http_upstream_handler_pt read_event_handler; |
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246 ngx_http_upstream_handler_pt write_event_handler; |
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247 |
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248 ngx_peer_connection_t peer; |
479 | 249 |
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250 ngx_event_pipe_t *pipe; |
479 | 251 |
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252 ngx_chain_t *request_bufs; |
479 | 253 |
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254 ngx_output_chain_ctx_t output; |
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255 ngx_chain_writer_ctx_t writer; |
479 | 256 |
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257 ngx_http_upstream_conf_t *conf; |
479 | 258 |
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259 ngx_http_upstream_headers_in_t headers_in; |
509 | 260 |
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261 ngx_http_upstream_resolved_t *resolved; |
1658 | 262 |
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263 ngx_buf_t buffer; |
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264 size_t length; |
581 | 265 |
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266 ngx_chain_t *out_bufs; |
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267 ngx_chain_t *busy_bufs; |
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268 ngx_chain_t *free_bufs; |
581 | 269 |
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270 ngx_int_t (*input_filter_init)(void *data); |
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271 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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272 void *input_filter_ctx; |
479 | 273 |
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274 #if (NGX_HTTP_CACHE) |
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275 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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276 #endif |
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277 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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278 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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279 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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280 void (*abort_request)(ngx_http_request_t *r); |
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281 void (*finalize_request)(ngx_http_request_t *r, |
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282 ngx_int_t rc); |
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283 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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284 ngx_table_elt_t *h, size_t prefix); |
479 | 285 |
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286 ngx_msec_t timeout; |
527 | 287 |
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288 ngx_http_upstream_state_t *state; |
479 | 289 |
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290 ngx_str_t method; |
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291 ngx_str_t schema; |
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292 ngx_str_t uri; |
555 | 293 |
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294 ngx_http_cleanup_pt *cleanup; |
569 | 295 |
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296 unsigned store:1; |
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297 unsigned cacheable:1; |
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298 unsigned accel:1; |
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299 unsigned ssl:1; |
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300 #if (NGX_HTTP_CACHE) |
3092 | 301 unsigned cache_status:3; |
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302 #endif |
479 | 303 |
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304 unsigned buffering:1; |
649 | 305 |
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306 unsigned request_sent:1; |
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307 unsigned header_sent:1; |
479 | 308 }; |
309 | |
310 | |
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311 typedef struct { |
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312 ngx_uint_t status; |
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313 ngx_uint_t mask; |
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314 } ngx_http_upstream_next_t; |
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315 |
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316 |
1162 | 317 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
318 ngx_http_variable_value_t *v, uintptr_t data); | |
319 | |
479 | 320 void ngx_http_upstream_init(ngx_http_request_t *r); |
651 | 321 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
884 | 322 ngx_url_t *u, ngx_uint_t flags); |
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323 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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324 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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325 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
884 | 326 |
327 | |
328 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
329 uscf->srv_conf[module.ctx_index] | |
509 | 330 |
479 | 331 |
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332 extern ngx_module_t ngx_http_upstream_module; |
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333 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[]; |
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334 |
479 | 335 |
336 | |
337 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |