Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.h @ 7121:924b6ef942bf
Fixed handling of unix sockets in $binary_remote_addr.
Previously, unix sockets were treated as AF_INET ones, and this may
result in buffer overread on Linux, where unbound unix sockets have
2-byte addresses.
Note that it is not correct to use just sun_path as a binary representation
for unix sockets. This will result in an empty string for unbound unix
sockets, and thus behaviour of limit_req and limit_conn will change when
switching from $remote_addr to $binary_remote_addr. As such, normal text
representation is used.
Reported by Stephan Dollberg.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 04 Oct 2017 21:19:42 +0300 |
parents | 5a3ab1b5804b |
children | d0d32b33167d |
rev | line source |
---|---|
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_HTTP_429 0x00000400 |
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30 #define NGX_HTTP_UPSTREAM_FT_UPDATING 0x00000800 |
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31 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00001000 |
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32 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00002000 |
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33 #define NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT 0x00004000 |
1378 | 34 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000 |
665 | 35 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000 |
479 | 36 |
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37 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \ |
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38 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \ |
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39 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \ |
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40 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \ |
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41 |NGX_HTTP_UPSTREAM_FT_HTTP_403 \ |
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42 |NGX_HTTP_UPSTREAM_FT_HTTP_404 \ |
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43 |NGX_HTTP_UPSTREAM_FT_HTTP_429) |
479 | 44 |
45 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40 | |
46 | |
47 | |
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48 #define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002 |
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49 #define NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 0x00000004 |
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50 #define NGX_HTTP_UPSTREAM_IGN_EXPIRES 0x00000008 |
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51 #define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL 0x00000010 |
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52 #define NGX_HTTP_UPSTREAM_IGN_SET_COOKIE 0x00000020 |
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53 #define NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE 0x00000040 |
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54 #define NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING 0x00000080 |
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55 #define NGX_HTTP_UPSTREAM_IGN_XA_CHARSET 0x00000100 |
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56 #define NGX_HTTP_UPSTREAM_IGN_VARY 0x00000200 |
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57 |
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58 |
479 | 59 typedef struct { |
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60 ngx_uint_t status; |
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61 ngx_msec_t response_time; |
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62 ngx_msec_t connect_time; |
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63 ngx_msec_t header_time; |
3795 | 64 off_t response_length; |
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65 off_t bytes_received; |
563 | 66 |
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67 ngx_str_t *peer; |
479 | 68 } ngx_http_upstream_state_t; |
69 | |
70 | |
71 typedef struct { | |
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72 ngx_hash_t headers_in_hash; |
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73 ngx_array_t upstreams; |
884 | 74 /* ngx_http_upstream_srv_conf_t */ |
509 | 75 } ngx_http_upstream_main_conf_t; |
76 | |
884 | 77 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
78 | |
79 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
80 ngx_http_upstream_srv_conf_t *us); | |
81 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
82 ngx_http_upstream_srv_conf_t *us); | |
83 | |
84 | |
85 typedef struct { | |
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86 ngx_http_upstream_init_pt init_upstream; |
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87 ngx_http_upstream_init_peer_pt init; |
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88 void *data; |
884 | 89 } ngx_http_upstream_peer_t; |
90 | |
509 | 91 |
92 typedef struct { | |
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93 ngx_str_t name; |
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94 ngx_addr_t *addrs; |
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95 ngx_uint_t naddrs; |
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96 ngx_uint_t weight; |
6705 | 97 ngx_uint_t max_conns; |
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98 ngx_uint_t max_fails; |
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99 time_t fail_timeout; |
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100 ngx_msec_t slow_start; |
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101 ngx_uint_t down; |
884 | 102 |
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103 unsigned backup:1; |
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104 |
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105 NGX_COMPAT_BEGIN(6) |
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106 NGX_COMPAT_END |
884 | 107 } ngx_http_upstream_server_t; |
108 | |
651 | 109 |
884 | 110 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
111 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
112 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
113 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
114 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
115 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
6705 | 116 #define NGX_HTTP_UPSTREAM_MAX_CONNS 0x0100 |
884 | 117 |
651 | 118 |
884 | 119 struct ngx_http_upstream_srv_conf_s { |
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120 ngx_http_upstream_peer_t peer; |
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121 void **srv_conf; |
884 | 122 |
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123 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
884 | 124 |
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125 ngx_uint_t flags; |
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126 ngx_str_t host; |
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127 u_char *file_name; |
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128 ngx_uint_t line; |
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129 in_port_t port; |
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Fixed "proxy_pass" with IP address and no port (ticket #276).
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130 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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131 |
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132 #if (NGX_HTTP_UPSTREAM_ZONE) |
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133 ngx_shm_zone_t *shm_zone; |
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134 #endif |
884 | 135 }; |
651 | 136 |
137 | |
138 typedef struct { | |
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139 ngx_addr_t *addr; |
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140 ngx_http_complex_value_t *value; |
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141 #if (NGX_HAVE_TRANSPARENT_PROXY) |
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142 ngx_uint_t transparent; /* unsigned transparent:1; */ |
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143 #endif |
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144 } ngx_http_upstream_local_t; |
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145 |
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146 |
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147 typedef struct { |
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148 ngx_http_upstream_srv_conf_t *upstream; |
884 | 149 |
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150 ngx_msec_t connect_timeout; |
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151 ngx_msec_t send_timeout; |
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152 ngx_msec_t read_timeout; |
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153 ngx_msec_t next_upstream_timeout; |
479 | 154 |
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155 size_t send_lowat; |
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156 size_t buffer_size; |
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157 size_t limit_rate; |
529 | 158 |
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159 size_t busy_buffers_size; |
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160 size_t max_temp_file_size; |
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161 size_t temp_file_write_size; |
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162 |
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163 size_t busy_buffers_size_conf; |
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164 size_t max_temp_file_size_conf; |
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165 size_t temp_file_write_size_conf; |
509 | 166 |
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167 ngx_bufs_t bufs; |
529 | 168 |
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169 ngx_uint_t ignore_headers; |
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170 ngx_uint_t next_upstream; |
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171 ngx_uint_t store_access; |
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172 ngx_uint_t next_upstream_tries; |
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173 ngx_flag_t buffering; |
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174 ngx_flag_t request_buffering; |
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175 ngx_flag_t pass_request_headers; |
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176 ngx_flag_t pass_request_body; |
479 | 177 |
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178 ngx_flag_t ignore_client_abort; |
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179 ngx_flag_t intercept_errors; |
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180 ngx_flag_t cyclic_temp_file; |
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Upstream: proxy_force_ranges and friends.
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181 ngx_flag_t force_ranges; |
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182 |
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183 ngx_path_t *temp_path; |
479 | 184 |
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185 ngx_hash_t hide_headers_hash; |
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186 ngx_array_t *hide_headers; |
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187 ngx_array_t *pass_headers; |
509 | 188 |
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189 ngx_http_upstream_local_t *local; |
3271
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190 |
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191 #if (NGX_HTTP_CACHE) |
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192 ngx_shm_zone_t *cache_zone; |
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193 ngx_http_complex_value_t *cache_value; |
479 | 194 |
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195 ngx_uint_t cache_min_uses; |
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196 ngx_uint_t cache_use_stale; |
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197 ngx_uint_t cache_methods; |
479 | 198 |
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199 off_t cache_max_range_offset; |
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200 |
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201 ngx_flag_t cache_lock; |
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202 ngx_msec_t cache_lock_timeout; |
5905
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203 ngx_msec_t cache_lock_age; |
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204 |
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205 ngx_flag_t cache_revalidate; |
6290
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206 ngx_flag_t cache_convert_head; |
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Upstream: proxy_cache_background_update and friends.
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207 ngx_flag_t cache_background_update; |
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208 |
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209 ngx_array_t *cache_valid; |
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210 ngx_array_t *cache_bypass; |
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Modules compatibility: cache purge fields.
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211 ngx_array_t *cache_purge; |
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212 ngx_array_t *no_cache; |
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213 #endif |
509 | 214 |
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215 ngx_array_t *store_lengths; |
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216 ngx_array_t *store_values; |
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217 |
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218 #if (NGX_HTTP_CACHE) |
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219 signed cache:2; |
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220 #endif |
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221 signed store:2; |
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222 unsigned intercept_404:1; |
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223 unsigned change_buffering:1; |
581 | 224 |
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225 #if (NGX_HTTP_SSL || NGX_COMPAT) |
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226 ngx_ssl_t *ssl; |
2754 | 227 ngx_flag_t ssl_session_reuse; |
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228 |
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229 ngx_http_complex_value_t *ssl_name; |
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230 ngx_flag_t ssl_server_name; |
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Upstream: proxy_ssl_verify and friends.
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231 ngx_flag_t ssl_verify; |
577 | 232 #endif |
233 | |
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234 ngx_str_t module; |
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235 |
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236 NGX_COMPAT_BEGIN(2) |
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237 NGX_COMPAT_END |
479 | 238 } ngx_http_upstream_conf_t; |
239 | |
240 | |
509 | 241 typedef struct { |
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242 ngx_str_t name; |
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243 ngx_http_header_handler_pt handler; |
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244 ngx_uint_t offset; |
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245 ngx_http_header_handler_pt copy_handler; |
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246 ngx_uint_t conf; |
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247 ngx_uint_t redirect; /* unsigned redirect:1; */ |
509 | 248 } ngx_http_upstream_header_t; |
249 | |
250 | |
251 typedef struct { | |
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252 ngx_list_t headers; |
509 | 253 |
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254 ngx_uint_t status_n; |
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255 ngx_str_t status_line; |
529 | 256 |
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257 ngx_table_elt_t *status; |
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258 ngx_table_elt_t *date; |
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259 ngx_table_elt_t *server; |
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260 ngx_table_elt_t *connection; |
509 | 261 |
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262 ngx_table_elt_t *expires; |
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263 ngx_table_elt_t *etag; |
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264 ngx_table_elt_t *x_accel_expires; |
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265 ngx_table_elt_t *x_accel_redirect; |
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266 ngx_table_elt_t *x_accel_limit_rate; |
509 | 267 |
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268 ngx_table_elt_t *content_type; |
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269 ngx_table_elt_t *content_length; |
509 | 270 |
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271 ngx_table_elt_t *last_modified; |
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272 ngx_table_elt_t *location; |
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273 ngx_table_elt_t *accept_ranges; |
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274 ngx_table_elt_t *www_authenticate; |
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Upstream: Transfer-Encoding header processing.
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275 ngx_table_elt_t *transfer_encoding; |
5877
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Cache: disable caching of responses with Vary (ticket #118).
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276 ngx_table_elt_t *vary; |
509 | 277 |
278 #if (NGX_HTTP_GZIP) | |
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279 ngx_table_elt_t *content_encoding; |
509 | 280 #endif |
281 | |
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282 ngx_array_t cache_control; |
5677
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Upstream: added the "$upstream_cookie_<name>" variables.
Vladimir Homutov <vl@nginx.com>
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283 ngx_array_t cookies; |
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284 |
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|
285 off_t content_length_n; |
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286 time_t last_modified_time; |
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287 |
4124
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Upstream: Connection header processing.
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288 unsigned connection_close:1; |
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289 unsigned chunked:1; |
509 | 290 } ngx_http_upstream_headers_in_t; |
291 | |
479 | 292 |
1658 | 293 typedef struct { |
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294 ngx_str_t host; |
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295 in_port_t port; |
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296 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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297 |
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298 ngx_uint_t naddrs; |
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Resolver: added support for SRV records.
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299 ngx_resolver_addr_t *addrs; |
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300 |
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301 struct sockaddr *sockaddr; |
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302 socklen_t socklen; |
6785
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Upstream: added the ngx_http_upstream_resolved_t.name field.
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303 ngx_str_t name; |
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304 |
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305 ngx_resolver_ctx_t *ctx; |
1658 | 306 } ngx_http_upstream_resolved_t; |
307 | |
308 | |
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309 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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310 ngx_http_upstream_t *u); |
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311 |
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312 |
479 | 313 struct ngx_http_upstream_s { |
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314 ngx_http_upstream_handler_pt read_event_handler; |
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315 ngx_http_upstream_handler_pt write_event_handler; |
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316 |
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317 ngx_peer_connection_t peer; |
479 | 318 |
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319 ngx_event_pipe_t *pipe; |
479 | 320 |
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321 ngx_chain_t *request_bufs; |
479 | 322 |
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323 ngx_output_chain_ctx_t output; |
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324 ngx_chain_writer_ctx_t writer; |
479 | 325 |
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326 ngx_http_upstream_conf_t *conf; |
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327 ngx_http_upstream_srv_conf_t *upstream; |
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328 #if (NGX_HTTP_CACHE) |
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329 ngx_array_t *caches; |
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330 #endif |
479 | 331 |
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332 ngx_http_upstream_headers_in_t headers_in; |
509 | 333 |
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334 ngx_http_upstream_resolved_t *resolved; |
1658 | 335 |
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336 ngx_buf_t from_client; |
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337 |
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338 ngx_buf_t buffer; |
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339 off_t length; |
581 | 340 |
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341 ngx_chain_t *out_bufs; |
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342 ngx_chain_t *busy_bufs; |
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343 ngx_chain_t *free_bufs; |
581 | 344 |
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345 ngx_int_t (*input_filter_init)(void *data); |
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346 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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347 void *input_filter_ctx; |
479 | 348 |
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349 #if (NGX_HTTP_CACHE) |
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350 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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351 #endif |
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352 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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353 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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354 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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355 void (*abort_request)(ngx_http_request_t *r); |
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356 void (*finalize_request)(ngx_http_request_t *r, |
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357 ngx_int_t rc); |
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358 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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359 ngx_table_elt_t *h, size_t prefix); |
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360 ngx_int_t (*rewrite_cookie)(ngx_http_request_t *r, |
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361 ngx_table_elt_t *h); |
479 | 362 |
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363 ngx_msec_t timeout; |
527 | 364 |
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365 ngx_http_upstream_state_t *state; |
479 | 366 |
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367 ngx_str_t method; |
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368 ngx_str_t schema; |
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369 ngx_str_t uri; |
555 | 370 |
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371 #if (NGX_HTTP_SSL || NGX_COMPAT) |
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372 ngx_str_t ssl_name; |
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373 #endif |
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374 |
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375 ngx_http_cleanup_pt *cleanup; |
569 | 376 |
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377 unsigned store:1; |
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378 unsigned cacheable:1; |
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379 unsigned accel:1; |
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380 unsigned ssl:1; |
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381 #if (NGX_HTTP_CACHE) |
2952 | 382 unsigned cache_status:3; |
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383 #endif |
479 | 384 |
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385 unsigned buffering:1; |
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386 unsigned keepalive:1; |
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387 unsigned upgrade:1; |
649 | 388 |
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389 unsigned request_sent:1; |
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390 unsigned request_body_sent:1; |
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391 unsigned header_sent:1; |
479 | 392 }; |
393 | |
394 | |
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395 typedef struct { |
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396 ngx_uint_t status; |
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397 ngx_uint_t mask; |
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398 } ngx_http_upstream_next_t; |
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399 |
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400 |
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401 typedef struct { |
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402 ngx_str_t key; |
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403 ngx_str_t value; |
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404 ngx_uint_t skip_empty; |
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405 } ngx_http_upstream_param_t; |
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406 |
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407 |
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408 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r); |
479 | 409 void ngx_http_upstream_init(ngx_http_request_t *r); |
651 | 410 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
884 | 411 ngx_url_t *u, ngx_uint_t flags); |
3399 | 412 char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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413 void *conf); |
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414 char *ngx_http_upstream_param_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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415 void *conf); |
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416 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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417 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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418 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
884 | 419 |
420 | |
421 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
422 uscf->srv_conf[module.ctx_index] | |
509 | 423 |
479 | 424 |
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425 extern ngx_module_t ngx_http_upstream_module; |
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426 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[]; |
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427 extern ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[]; |
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428 |
479 | 429 |
430 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |