Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream.h @ 2675:03fc1ae2cf36
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author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 06 Apr 2009 10:37:53 +0000 |
parents | 3a8a53c0c42f |
children | 7d16774c757c |
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_BUSY_LOCK 0x00000200 |
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28 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000400 |
1378 | 29 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000 |
665 | 30 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000 |
479 | 31 |
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32 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \ |
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33 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \ |
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34 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \ |
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35 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \ |
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_404) |
479 | 37 |
38 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40 | |
39 | |
40 | |
41 typedef struct { | |
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42 ngx_msec_t bl_time; |
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43 ngx_uint_t bl_state; |
479 | 44 |
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45 ngx_uint_t status; |
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46 time_t response_sec; |
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47 ngx_uint_t response_msec; |
2402 | 48 off_t response_length; |
563 | 49 |
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50 ngx_str_t *peer; |
479 | 51 } ngx_http_upstream_state_t; |
52 | |
53 | |
54 typedef struct { | |
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55 ngx_hash_t headers_in_hash; |
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56 ngx_array_t upstreams; |
884 | 57 /* ngx_http_upstream_srv_conf_t */ |
509 | 58 } ngx_http_upstream_main_conf_t; |
59 | |
884 | 60 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
61 | |
62 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
63 ngx_http_upstream_srv_conf_t *us); | |
64 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
65 ngx_http_upstream_srv_conf_t *us); | |
66 | |
67 | |
68 typedef struct { | |
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69 ngx_http_upstream_init_pt init_upstream; |
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70 ngx_http_upstream_init_peer_pt init; |
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71 void *data; |
884 | 72 } ngx_http_upstream_peer_t; |
73 | |
509 | 74 |
75 typedef struct { | |
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76 ngx_peer_addr_t *addrs; |
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77 ngx_uint_t naddrs; |
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78 ngx_uint_t weight; |
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79 ngx_uint_t max_fails; |
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80 time_t fail_timeout; |
884 | 81 |
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82 unsigned down:1; |
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83 unsigned backup:1; |
884 | 84 } ngx_http_upstream_server_t; |
85 | |
651 | 86 |
884 | 87 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
88 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
89 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
90 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
91 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
92 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
93 | |
651 | 94 |
884 | 95 struct ngx_http_upstream_srv_conf_s { |
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96 ngx_http_upstream_peer_t peer; |
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97 void **srv_conf; |
884 | 98 |
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99 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
884 | 100 |
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101 ngx_uint_t flags; |
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102 ngx_str_t host; |
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103 u_char *file_name; |
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104 ngx_uint_t line; |
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105 in_port_t port; |
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106 in_port_t default_port; |
884 | 107 }; |
651 | 108 |
109 | |
110 typedef struct { | |
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111 ngx_http_upstream_srv_conf_t *upstream; |
884 | 112 |
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113 ngx_msec_t connect_timeout; |
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114 ngx_msec_t send_timeout; |
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115 ngx_msec_t read_timeout; |
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116 ngx_msec_t timeout; |
479 | 117 |
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118 size_t send_lowat; |
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119 size_t buffer_size; |
529 | 120 |
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121 size_t busy_buffers_size; |
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122 size_t max_temp_file_size; |
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123 size_t temp_file_write_size; |
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124 |
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125 size_t busy_buffers_size_conf; |
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126 size_t max_temp_file_size_conf; |
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127 size_t temp_file_write_size_conf; |
509 | 128 |
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129 ngx_bufs_t bufs; |
529 | 130 |
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131 ngx_uint_t next_upstream; |
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132 ngx_uint_t store_access; |
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133 ngx_flag_t buffering; |
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134 ngx_flag_t pass_request_headers; |
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135 ngx_flag_t pass_request_body; |
479 | 136 |
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137 ngx_flag_t ignore_client_abort; |
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138 ngx_flag_t intercept_errors; |
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139 ngx_flag_t cyclic_temp_file; |
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140 |
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141 ngx_path_t *temp_path; |
479 | 142 |
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143 ngx_hash_t hide_headers_hash; |
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144 ngx_array_t *hide_headers; |
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145 ngx_array_t *pass_headers; |
509 | 146 |
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147 #if (NGX_HTTP_CACHE) |
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148 ngx_shm_zone_t *cache; |
479 | 149 |
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150 ngx_uint_t cache_min_uses; |
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151 ngx_uint_t cache_use_stale; |
479 | 152 |
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153 ngx_array_t *cache_valid; |
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154 #endif |
509 | 155 |
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156 ngx_array_t *store_lengths; |
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157 ngx_array_t *store_values; |
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158 |
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159 signed store:2; |
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160 unsigned intercept_404:1; |
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161 unsigned change_buffering:1; |
581 | 162 |
577 | 163 #if (NGX_HTTP_SSL) |
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164 ngx_ssl_t *ssl; |
2184 | 165 ngx_flag_t ssl_session_reuse; |
577 | 166 #endif |
167 | |
479 | 168 } ngx_http_upstream_conf_t; |
169 | |
170 | |
509 | 171 typedef struct { |
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172 ngx_str_t name; |
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173 ngx_http_header_handler_pt handler; |
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174 ngx_uint_t offset; |
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175 ngx_http_header_handler_pt copy_handler; |
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176 ngx_uint_t conf; |
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177 ngx_uint_t redirect; /* unsigned redirect:1; */ |
509 | 178 } ngx_http_upstream_header_t; |
179 | |
180 | |
181 typedef struct { | |
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182 ngx_list_t headers; |
509 | 183 |
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184 ngx_uint_t status_n; |
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185 ngx_str_t status_line; |
529 | 186 |
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187 ngx_table_elt_t *status; |
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188 ngx_table_elt_t *date; |
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189 ngx_table_elt_t *server; |
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190 ngx_table_elt_t *connection; |
509 | 191 |
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192 ngx_table_elt_t *expires; |
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193 ngx_table_elt_t *etag; |
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194 ngx_table_elt_t *x_accel_expires; |
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195 ngx_table_elt_t *x_accel_redirect; |
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196 ngx_table_elt_t *x_accel_limit_rate; |
509 | 197 |
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198 ngx_table_elt_t *content_type; |
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199 ngx_table_elt_t *content_length; |
509 | 200 |
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201 ngx_table_elt_t *last_modified; |
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202 ngx_table_elt_t *location; |
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203 ngx_table_elt_t *accept_ranges; |
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204 ngx_table_elt_t *www_authenticate; |
509 | 205 |
206 #if (NGX_HTTP_GZIP) | |
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207 ngx_table_elt_t *content_encoding; |
509 | 208 #endif |
209 | |
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210 off_t content_length_n; |
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211 |
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212 ngx_array_t cache_control; |
509 | 213 } ngx_http_upstream_headers_in_t; |
214 | |
479 | 215 |
1658 | 216 typedef struct { |
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217 ngx_str_t host; |
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218 in_port_t port; |
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219 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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220 |
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221 ngx_uint_t naddrs; |
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222 in_addr_t *addrs; |
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223 |
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224 struct sockaddr *sockaddr; |
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225 socklen_t socklen; |
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226 |
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227 ngx_resolver_ctx_t *ctx; |
1658 | 228 } ngx_http_upstream_resolved_t; |
229 | |
230 | |
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231 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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232 ngx_http_upstream_t *u); |
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233 |
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234 |
479 | 235 struct ngx_http_upstream_s { |
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236 ngx_http_upstream_handler_pt read_event_handler; |
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237 ngx_http_upstream_handler_pt write_event_handler; |
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238 |
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239 ngx_peer_connection_t peer; |
479 | 240 |
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241 ngx_event_pipe_t *pipe; |
479 | 242 |
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243 ngx_chain_t *request_bufs; |
479 | 244 |
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245 ngx_output_chain_ctx_t output; |
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246 ngx_chain_writer_ctx_t writer; |
479 | 247 |
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248 ngx_http_upstream_conf_t *conf; |
479 | 249 |
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250 ngx_http_upstream_headers_in_t headers_in; |
509 | 251 |
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252 ngx_http_upstream_resolved_t *resolved; |
1658 | 253 |
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254 ngx_buf_t buffer; |
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255 size_t length; |
581 | 256 |
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257 ngx_chain_t *out_bufs; |
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258 ngx_chain_t *busy_bufs; |
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259 ngx_chain_t *free_bufs; |
581 | 260 |
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261 ngx_int_t (*input_filter_init)(void *data); |
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262 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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263 void *input_filter_ctx; |
479 | 264 |
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265 #if (NGX_HTTP_CACHE) |
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266 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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267 #endif |
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268 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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269 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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270 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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271 void (*abort_request)(ngx_http_request_t *r); |
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272 void (*finalize_request)(ngx_http_request_t *r, |
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273 ngx_int_t rc); |
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274 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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275 ngx_table_elt_t *h, size_t prefix); |
479 | 276 |
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277 ngx_msec_t timeout; |
527 | 278 |
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279 ngx_http_upstream_state_t *state; |
479 | 280 |
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281 ngx_str_t method; |
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282 ngx_str_t schema; |
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283 ngx_str_t uri; |
555 | 284 |
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285 ngx_http_cleanup_pt *cleanup; |
569 | 286 |
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287 unsigned store:1; |
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288 unsigned cacheable:1; |
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289 unsigned accel:1; |
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290 unsigned ssl:1; |
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291 #if (NGX_HTTP_CACHE) |
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292 unsigned stale_cache:1; |
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293 #endif |
479 | 294 |
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295 unsigned buffering:1; |
649 | 296 |
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297 unsigned request_sent:1; |
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298 unsigned header_sent:1; |
479 | 299 }; |
300 | |
301 | |
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302 typedef struct { |
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303 ngx_uint_t status; |
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304 ngx_uint_t mask; |
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305 } ngx_http_upstream_next_t; |
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306 |
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307 |
1162 | 308 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
309 ngx_http_variable_value_t *v, uintptr_t data); | |
310 | |
479 | 311 void ngx_http_upstream_init(ngx_http_request_t *r); |
651 | 312 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
884 | 313 ngx_url_t *u, ngx_uint_t flags); |
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314 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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315 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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316 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
884 | 317 |
318 | |
319 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
320 uscf->srv_conf[module.ctx_index] | |
509 | 321 |
479 | 322 |
509 | 323 extern ngx_module_t ngx_http_upstream_module; |
479 | 324 |
325 | |
326 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |