Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream.h @ 5405:620808518349
SPDY: ignore priority when queuing blocked frames.
With this change all such frames will be added in front of the output queue, and
will be sent first. It prevents HOL blocking when response with higher priority
is blocked by response with lower priority in the middle of the queue because
the order of their SYN_REPLY frames cannot be changed.
Proposed by Yury Kirpichev.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 01 Oct 2013 00:14:37 +0400 |
parents | 05c53652e7b4 |
children | 43ccaf8e8728 |
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 |
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54 |
479 | 55 typedef struct { |
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56 ngx_msec_t bl_time; |
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57 ngx_uint_t bl_state; |
479 | 58 |
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59 ngx_uint_t status; |
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60 time_t response_sec; |
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61 ngx_uint_t response_msec; |
3795 | 62 off_t response_length; |
563 | 63 |
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64 ngx_str_t *peer; |
479 | 65 } ngx_http_upstream_state_t; |
66 | |
67 | |
68 typedef struct { | |
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69 ngx_hash_t headers_in_hash; |
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70 ngx_array_t upstreams; |
884 | 71 /* ngx_http_upstream_srv_conf_t */ |
509 | 72 } ngx_http_upstream_main_conf_t; |
73 | |
884 | 74 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
75 | |
76 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
77 ngx_http_upstream_srv_conf_t *us); | |
78 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
79 ngx_http_upstream_srv_conf_t *us); | |
80 | |
81 | |
82 typedef struct { | |
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83 ngx_http_upstream_init_pt init_upstream; |
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84 ngx_http_upstream_init_peer_pt init; |
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85 void *data; |
884 | 86 } ngx_http_upstream_peer_t; |
87 | |
509 | 88 |
89 typedef struct { | |
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90 ngx_addr_t *addrs; |
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91 ngx_uint_t naddrs; |
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92 ngx_uint_t weight; |
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93 ngx_uint_t max_fails; |
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94 time_t fail_timeout; |
884 | 95 |
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96 unsigned down:1; |
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97 unsigned backup:1; |
884 | 98 } ngx_http_upstream_server_t; |
99 | |
651 | 100 |
884 | 101 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
102 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
103 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
104 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
105 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
106 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
107 | |
651 | 108 |
884 | 109 struct ngx_http_upstream_srv_conf_s { |
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110 ngx_http_upstream_peer_t peer; |
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111 void **srv_conf; |
884 | 112 |
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113 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
884 | 114 |
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115 ngx_uint_t flags; |
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116 ngx_str_t host; |
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117 u_char *file_name; |
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118 ngx_uint_t line; |
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119 in_port_t port; |
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120 in_port_t default_port; |
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121 ngx_uint_t no_port; /* unsigned no_port:1 */ |
884 | 122 }; |
651 | 123 |
124 | |
125 typedef struct { | |
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126 ngx_addr_t *addr; |
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127 ngx_http_complex_value_t *value; |
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128 } ngx_http_upstream_local_t; |
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129 |
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130 |
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131 typedef struct { |
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132 ngx_http_upstream_srv_conf_t *upstream; |
884 | 133 |
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134 ngx_msec_t connect_timeout; |
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135 ngx_msec_t send_timeout; |
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136 ngx_msec_t read_timeout; |
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137 ngx_msec_t timeout; |
479 | 138 |
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139 size_t send_lowat; |
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140 size_t buffer_size; |
529 | 141 |
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142 size_t busy_buffers_size; |
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143 size_t max_temp_file_size; |
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144 size_t temp_file_write_size; |
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145 |
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146 size_t busy_buffers_size_conf; |
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147 size_t max_temp_file_size_conf; |
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148 size_t temp_file_write_size_conf; |
509 | 149 |
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150 ngx_bufs_t bufs; |
529 | 151 |
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152 ngx_uint_t ignore_headers; |
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153 ngx_uint_t next_upstream; |
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154 ngx_uint_t store_access; |
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155 ngx_flag_t buffering; |
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156 ngx_flag_t pass_request_headers; |
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157 ngx_flag_t pass_request_body; |
479 | 158 |
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159 ngx_flag_t ignore_client_abort; |
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160 ngx_flag_t intercept_errors; |
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161 ngx_flag_t cyclic_temp_file; |
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162 |
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163 ngx_path_t *temp_path; |
479 | 164 |
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165 ngx_hash_t hide_headers_hash; |
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166 ngx_array_t *hide_headers; |
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167 ngx_array_t *pass_headers; |
509 | 168 |
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169 ngx_http_upstream_local_t *local; |
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170 |
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171 #if (NGX_HTTP_CACHE) |
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172 ngx_shm_zone_t *cache; |
479 | 173 |
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174 ngx_uint_t cache_min_uses; |
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175 ngx_uint_t cache_use_stale; |
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176 ngx_uint_t cache_methods; |
479 | 177 |
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178 ngx_flag_t cache_lock; |
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179 ngx_msec_t cache_lock_timeout; |
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180 |
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181 ngx_array_t *cache_valid; |
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182 ngx_array_t *cache_bypass; |
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183 ngx_array_t *no_cache; |
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184 #endif |
509 | 185 |
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186 ngx_array_t *store_lengths; |
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187 ngx_array_t *store_values; |
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188 |
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189 signed store:2; |
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190 unsigned intercept_404:1; |
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191 unsigned change_buffering:1; |
581 | 192 |
577 | 193 #if (NGX_HTTP_SSL) |
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194 ngx_ssl_t *ssl; |
2754 | 195 ngx_flag_t ssl_session_reuse; |
577 | 196 #endif |
197 | |
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198 ngx_str_t module; |
479 | 199 } ngx_http_upstream_conf_t; |
200 | |
201 | |
509 | 202 typedef struct { |
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203 ngx_str_t name; |
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204 ngx_http_header_handler_pt handler; |
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205 ngx_uint_t offset; |
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206 ngx_http_header_handler_pt copy_handler; |
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207 ngx_uint_t conf; |
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208 ngx_uint_t redirect; /* unsigned redirect:1; */ |
509 | 209 } ngx_http_upstream_header_t; |
210 | |
211 | |
212 typedef struct { | |
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213 ngx_list_t headers; |
509 | 214 |
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215 ngx_uint_t status_n; |
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216 ngx_str_t status_line; |
529 | 217 |
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218 ngx_table_elt_t *status; |
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219 ngx_table_elt_t *date; |
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220 ngx_table_elt_t *server; |
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221 ngx_table_elt_t *connection; |
509 | 222 |
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223 ngx_table_elt_t *expires; |
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224 ngx_table_elt_t *etag; |
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225 ngx_table_elt_t *x_accel_expires; |
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226 ngx_table_elt_t *x_accel_redirect; |
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227 ngx_table_elt_t *x_accel_limit_rate; |
509 | 228 |
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229 ngx_table_elt_t *content_type; |
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230 ngx_table_elt_t *content_length; |
509 | 231 |
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232 ngx_table_elt_t *last_modified; |
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233 ngx_table_elt_t *location; |
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234 ngx_table_elt_t *accept_ranges; |
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235 ngx_table_elt_t *www_authenticate; |
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236 ngx_table_elt_t *transfer_encoding; |
509 | 237 |
238 #if (NGX_HTTP_GZIP) | |
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239 ngx_table_elt_t *content_encoding; |
509 | 240 #endif |
241 | |
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242 off_t content_length_n; |
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243 |
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244 ngx_array_t cache_control; |
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245 |
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246 unsigned connection_close:1; |
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247 unsigned chunked:1; |
509 | 248 } ngx_http_upstream_headers_in_t; |
249 | |
479 | 250 |
1658 | 251 typedef struct { |
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252 ngx_str_t host; |
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253 in_port_t port; |
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254 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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255 |
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256 ngx_uint_t naddrs; |
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257 in_addr_t *addrs; |
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258 |
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259 struct sockaddr *sockaddr; |
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260 socklen_t socklen; |
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261 |
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262 ngx_resolver_ctx_t *ctx; |
1658 | 263 } ngx_http_upstream_resolved_t; |
264 | |
265 | |
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266 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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267 ngx_http_upstream_t *u); |
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268 |
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269 |
479 | 270 struct ngx_http_upstream_s { |
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271 ngx_http_upstream_handler_pt read_event_handler; |
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272 ngx_http_upstream_handler_pt write_event_handler; |
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273 |
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274 ngx_peer_connection_t peer; |
479 | 275 |
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276 ngx_event_pipe_t *pipe; |
479 | 277 |
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278 ngx_chain_t *request_bufs; |
479 | 279 |
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280 ngx_output_chain_ctx_t output; |
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281 ngx_chain_writer_ctx_t writer; |
479 | 282 |
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283 ngx_http_upstream_conf_t *conf; |
479 | 284 |
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285 ngx_http_upstream_headers_in_t headers_in; |
509 | 286 |
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287 ngx_http_upstream_resolved_t *resolved; |
1658 | 288 |
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289 ngx_buf_t from_client; |
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290 |
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291 ngx_buf_t buffer; |
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292 off_t length; |
581 | 293 |
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294 ngx_chain_t *out_bufs; |
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295 ngx_chain_t *busy_bufs; |
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296 ngx_chain_t *free_bufs; |
581 | 297 |
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298 ngx_int_t (*input_filter_init)(void *data); |
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299 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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300 void *input_filter_ctx; |
479 | 301 |
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302 #if (NGX_HTTP_CACHE) |
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303 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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304 #endif |
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305 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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306 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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307 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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308 void (*abort_request)(ngx_http_request_t *r); |
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309 void (*finalize_request)(ngx_http_request_t *r, |
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310 ngx_int_t rc); |
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311 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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312 ngx_table_elt_t *h, size_t prefix); |
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313 ngx_int_t (*rewrite_cookie)(ngx_http_request_t *r, |
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314 ngx_table_elt_t *h); |
479 | 315 |
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316 ngx_msec_t timeout; |
527 | 317 |
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318 ngx_http_upstream_state_t *state; |
479 | 319 |
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320 ngx_str_t method; |
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321 ngx_str_t schema; |
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322 ngx_str_t uri; |
555 | 323 |
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324 ngx_http_cleanup_pt *cleanup; |
569 | 325 |
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326 unsigned store:1; |
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327 unsigned cacheable:1; |
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328 unsigned accel:1; |
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329 unsigned ssl:1; |
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330 #if (NGX_HTTP_CACHE) |
2952 | 331 unsigned cache_status:3; |
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332 #endif |
479 | 333 |
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334 unsigned buffering:1; |
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335 unsigned keepalive:1; |
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336 unsigned upgrade:1; |
649 | 337 |
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338 unsigned request_sent:1; |
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339 unsigned header_sent:1; |
479 | 340 }; |
341 | |
342 | |
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343 typedef struct { |
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344 ngx_uint_t status; |
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345 ngx_uint_t mask; |
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346 } ngx_http_upstream_next_t; |
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347 |
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348 |
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349 typedef struct { |
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350 ngx_str_t key; |
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351 ngx_str_t value; |
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352 ngx_uint_t skip_empty; |
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353 } ngx_http_upstream_param_t; |
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354 |
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355 |
1162 | 356 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
357 ngx_http_variable_value_t *v, uintptr_t data); | |
358 | |
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359 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r); |
479 | 360 void ngx_http_upstream_init(ngx_http_request_t *r); |
651 | 361 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
884 | 362 ngx_url_t *u, ngx_uint_t flags); |
3399 | 363 char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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364 void *conf); |
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365 char *ngx_http_upstream_param_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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366 void *conf); |
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367 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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368 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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369 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
884 | 370 |
371 | |
372 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
373 uscf->srv_conf[module.ctx_index] | |
509 | 374 |
479 | 375 |
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376 extern ngx_module_t ngx_http_upstream_module; |
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377 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[]; |
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378 extern ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[]; |
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379 |
479 | 380 |
381 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |