Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.h @ 4041:f87edc142316 stable-1.0
Merge of r3960, r3961, r3962, r3963, r3965:
SSL related fixes:
*) MSIE export versions are rare now, so RSA 512 key is generated on demand
and is shared among all hosts instead of pregenerating for every HTTPS host
on configuraiton phase. This decreases start time for configuration with
large number of HTTPS hosts.
*) ECDHE support; patch by Adrian Kotelba
*) fix build by gcc46 with -Wunused-value option
*) fix SSL connection issues on platforms with 32-bit off_t
*) do not try to reuse and save a SSL session for a peer created on the fly
by ngx_http_upstream_create_round_robin_peer(), since the peer lives
only during request so the saved SSL session will never be used again
and just causes memory leak
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 29 Aug 2011 12:35:53 +0000 |
| parents | 254c09d0f791 |
| children | 215fe9223419 |
| rev | line source |
|---|---|
| 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 #define NGX_HTTP_UPSTREAM_IGN_SET_COOKIE 0x00000020 |
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47 |
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48 |
| 479 | 49 typedef struct { |
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50 ngx_msec_t bl_time; |
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51 ngx_uint_t bl_state; |
| 479 | 52 |
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53 ngx_uint_t status; |
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54 time_t response_sec; |
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55 ngx_uint_t response_msec; |
| 3795 | 56 off_t response_length; |
| 563 | 57 |
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58 ngx_str_t *peer; |
| 479 | 59 } ngx_http_upstream_state_t; |
| 60 | |
| 61 | |
| 62 typedef struct { | |
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63 ngx_hash_t headers_in_hash; |
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64 ngx_array_t upstreams; |
| 884 | 65 /* ngx_http_upstream_srv_conf_t */ |
| 509 | 66 } ngx_http_upstream_main_conf_t; |
| 67 | |
| 884 | 68 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
| 69 | |
| 70 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
| 71 ngx_http_upstream_srv_conf_t *us); | |
| 72 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
| 73 ngx_http_upstream_srv_conf_t *us); | |
| 74 | |
| 75 | |
| 76 typedef struct { | |
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77 ngx_http_upstream_init_pt init_upstream; |
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78 ngx_http_upstream_init_peer_pt init; |
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79 void *data; |
| 884 | 80 } ngx_http_upstream_peer_t; |
| 81 | |
| 509 | 82 |
| 83 typedef struct { | |
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84 ngx_addr_t *addrs; |
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85 ngx_uint_t naddrs; |
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86 ngx_uint_t weight; |
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87 ngx_uint_t max_fails; |
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88 time_t fail_timeout; |
| 884 | 89 |
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90 unsigned down:1; |
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91 unsigned backup:1; |
| 884 | 92 } ngx_http_upstream_server_t; |
| 93 | |
| 651 | 94 |
| 884 | 95 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
| 96 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
| 97 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
| 98 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
| 99 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
| 100 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
| 101 | |
| 651 | 102 |
| 884 | 103 struct ngx_http_upstream_srv_conf_s { |
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104 ngx_http_upstream_peer_t peer; |
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105 void **srv_conf; |
| 884 | 106 |
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107 ngx_array_t *servers; /* ngx_http_upstream_server_t */ |
| 884 | 108 |
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109 ngx_uint_t flags; |
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110 ngx_str_t host; |
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111 u_char *file_name; |
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112 ngx_uint_t line; |
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113 in_port_t port; |
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114 in_port_t default_port; |
| 884 | 115 }; |
| 651 | 116 |
| 117 | |
| 118 typedef struct { | |
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119 ngx_http_upstream_srv_conf_t *upstream; |
| 884 | 120 |
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121 ngx_msec_t connect_timeout; |
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122 ngx_msec_t send_timeout; |
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123 ngx_msec_t read_timeout; |
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124 ngx_msec_t timeout; |
| 479 | 125 |
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126 size_t send_lowat; |
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127 size_t buffer_size; |
| 529 | 128 |
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129 size_t busy_buffers_size; |
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130 size_t max_temp_file_size; |
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131 size_t temp_file_write_size; |
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132 |
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133 size_t busy_buffers_size_conf; |
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134 size_t max_temp_file_size_conf; |
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135 size_t temp_file_write_size_conf; |
| 509 | 136 |
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137 ngx_bufs_t bufs; |
| 529 | 138 |
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139 ngx_uint_t ignore_headers; |
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140 ngx_uint_t next_upstream; |
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141 ngx_uint_t store_access; |
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142 ngx_flag_t buffering; |
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143 ngx_flag_t pass_request_headers; |
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144 ngx_flag_t pass_request_body; |
| 479 | 145 |
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146 ngx_flag_t ignore_client_abort; |
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147 ngx_flag_t intercept_errors; |
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148 ngx_flag_t cyclic_temp_file; |
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149 |
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150 ngx_path_t *temp_path; |
| 479 | 151 |
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152 ngx_hash_t hide_headers_hash; |
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153 ngx_array_t *hide_headers; |
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154 ngx_array_t *pass_headers; |
| 509 | 155 |
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156 ngx_addr_t *local; |
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157 |
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158 #if (NGX_HTTP_CACHE) |
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159 ngx_shm_zone_t *cache; |
| 479 | 160 |
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161 ngx_uint_t cache_min_uses; |
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162 ngx_uint_t cache_use_stale; |
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163 ngx_uint_t cache_methods; |
| 479 | 164 |
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165 ngx_array_t *cache_valid; |
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166 ngx_array_t *cache_bypass; |
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167 ngx_array_t *no_cache; |
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168 #endif |
| 509 | 169 |
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170 ngx_array_t *store_lengths; |
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171 ngx_array_t *store_values; |
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172 |
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173 signed store:2; |
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174 unsigned intercept_404:1; |
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175 unsigned change_buffering:1; |
| 581 | 176 |
| 577 | 177 #if (NGX_HTTP_SSL) |
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178 ngx_ssl_t *ssl; |
| 2754 | 179 ngx_flag_t ssl_session_reuse; |
| 577 | 180 #endif |
| 181 | |
| 479 | 182 } ngx_http_upstream_conf_t; |
| 183 | |
| 184 | |
| 509 | 185 typedef struct { |
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186 ngx_str_t name; |
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187 ngx_http_header_handler_pt handler; |
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188 ngx_uint_t offset; |
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189 ngx_http_header_handler_pt copy_handler; |
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190 ngx_uint_t conf; |
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191 ngx_uint_t redirect; /* unsigned redirect:1; */ |
| 509 | 192 } ngx_http_upstream_header_t; |
| 193 | |
| 194 | |
| 195 typedef struct { | |
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196 ngx_list_t headers; |
| 509 | 197 |
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198 ngx_uint_t status_n; |
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199 ngx_str_t status_line; |
| 529 | 200 |
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201 ngx_table_elt_t *status; |
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202 ngx_table_elt_t *date; |
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203 ngx_table_elt_t *server; |
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204 ngx_table_elt_t *connection; |
| 509 | 205 |
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206 ngx_table_elt_t *expires; |
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207 ngx_table_elt_t *etag; |
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208 ngx_table_elt_t *x_accel_expires; |
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209 ngx_table_elt_t *x_accel_redirect; |
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210 ngx_table_elt_t *x_accel_limit_rate; |
| 509 | 211 |
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212 ngx_table_elt_t *content_type; |
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213 ngx_table_elt_t *content_length; |
| 509 | 214 |
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215 ngx_table_elt_t *last_modified; |
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216 ngx_table_elt_t *location; |
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217 ngx_table_elt_t *accept_ranges; |
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218 ngx_table_elt_t *www_authenticate; |
| 509 | 219 |
| 220 #if (NGX_HTTP_GZIP) | |
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221 ngx_table_elt_t *content_encoding; |
| 509 | 222 #endif |
| 223 | |
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224 off_t content_length_n; |
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225 |
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226 ngx_array_t cache_control; |
| 509 | 227 } ngx_http_upstream_headers_in_t; |
| 228 | |
| 479 | 229 |
| 1658 | 230 typedef struct { |
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231 ngx_str_t host; |
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232 in_port_t port; |
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233 ngx_uint_t no_port; /* unsigned no_port:1 */ |
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234 |
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235 ngx_uint_t naddrs; |
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236 in_addr_t *addrs; |
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237 |
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238 struct sockaddr *sockaddr; |
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239 socklen_t socklen; |
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240 |
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241 ngx_resolver_ctx_t *ctx; |
| 1658 | 242 } ngx_http_upstream_resolved_t; |
| 243 | |
| 244 | |
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245 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r, |
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246 ngx_http_upstream_t *u); |
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247 |
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248 |
| 479 | 249 struct ngx_http_upstream_s { |
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250 ngx_http_upstream_handler_pt read_event_handler; |
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251 ngx_http_upstream_handler_pt write_event_handler; |
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252 |
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253 ngx_peer_connection_t peer; |
| 479 | 254 |
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255 ngx_event_pipe_t *pipe; |
| 479 | 256 |
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257 ngx_chain_t *request_bufs; |
| 479 | 258 |
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259 ngx_output_chain_ctx_t output; |
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260 ngx_chain_writer_ctx_t writer; |
| 479 | 261 |
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262 ngx_http_upstream_conf_t *conf; |
| 479 | 263 |
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264 ngx_http_upstream_headers_in_t headers_in; |
| 509 | 265 |
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266 ngx_http_upstream_resolved_t *resolved; |
| 1658 | 267 |
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268 ngx_buf_t buffer; |
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269 size_t length; |
| 581 | 270 |
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271 ngx_chain_t *out_bufs; |
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272 ngx_chain_t *busy_bufs; |
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273 ngx_chain_t *free_bufs; |
| 581 | 274 |
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275 ngx_int_t (*input_filter_init)(void *data); |
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276 ngx_int_t (*input_filter)(void *data, ssize_t bytes); |
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277 void *input_filter_ctx; |
| 479 | 278 |
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279 #if (NGX_HTTP_CACHE) |
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280 ngx_int_t (*create_key)(ngx_http_request_t *r); |
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281 #endif |
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282 ngx_int_t (*create_request)(ngx_http_request_t *r); |
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283 ngx_int_t (*reinit_request)(ngx_http_request_t *r); |
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284 ngx_int_t (*process_header)(ngx_http_request_t *r); |
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285 void (*abort_request)(ngx_http_request_t *r); |
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286 void (*finalize_request)(ngx_http_request_t *r, |
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287 ngx_int_t rc); |
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288 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, |
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289 ngx_table_elt_t *h, size_t prefix); |
| 479 | 290 |
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291 ngx_msec_t timeout; |
| 527 | 292 |
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293 ngx_http_upstream_state_t *state; |
| 479 | 294 |
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295 ngx_str_t method; |
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296 ngx_str_t schema; |
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297 ngx_str_t uri; |
| 555 | 298 |
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299 ngx_http_cleanup_pt *cleanup; |
| 569 | 300 |
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301 unsigned store:1; |
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302 unsigned cacheable:1; |
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303 unsigned accel:1; |
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304 unsigned ssl:1; |
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305 #if (NGX_HTTP_CACHE) |
| 2952 | 306 unsigned cache_status:3; |
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307 #endif |
| 479 | 308 |
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309 unsigned buffering:1; |
| 649 | 310 |
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311 unsigned request_sent:1; |
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312 unsigned header_sent:1; |
| 479 | 313 }; |
| 314 | |
| 315 | |
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316 typedef struct { |
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317 ngx_uint_t status; |
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318 ngx_uint_t mask; |
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319 } ngx_http_upstream_next_t; |
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320 |
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321 |
| 1162 | 322 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
| 323 ngx_http_variable_value_t *v, uintptr_t data); | |
| 324 | |
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325 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r); |
| 479 | 326 void ngx_http_upstream_init(ngx_http_request_t *r); |
| 651 | 327 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
| 884 | 328 ngx_url_t *u, ngx_uint_t flags); |
| 3399 | 329 char *ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd, |
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proxy_bind, fastcgi_bind, and memcached_bind
Igor Sysoev <igor@sysoev.ru>
parents:
3269
diff
changeset
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330 void *conf); |
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1701
40d004d95d88
*) now ngx_conf_set_str_array_slot() tests NGX_CONF_UNSET_PTR
Igor Sysoev <igor@sysoev.ru>
parents:
1658
diff
changeset
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331 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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40d004d95d88
*) now ngx_conf_set_str_array_slot() tests NGX_CONF_UNSET_PTR
Igor Sysoev <igor@sysoev.ru>
parents:
1658
diff
changeset
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332 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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40d004d95d88
*) now ngx_conf_set_str_array_slot() tests NGX_CONF_UNSET_PTR
Igor Sysoev <igor@sysoev.ru>
parents:
1658
diff
changeset
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333 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
| 884 | 334 |
| 335 | |
| 336 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
| 337 uscf->srv_conf[module.ctx_index] | |
| 509 | 338 |
| 479 | 339 |
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2875
6e1941b321b7
proxy_cache_methods and fastcgi_cache_methods
Igor Sysoev <igor@sysoev.ru>
parents:
2786
diff
changeset
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340 extern ngx_module_t ngx_http_upstream_module; |
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6e1941b321b7
proxy_cache_methods and fastcgi_cache_methods
Igor Sysoev <igor@sysoev.ru>
parents:
2786
diff
changeset
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341 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[]; |
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3667
12bd9e26fadb
use shared ngx_http_upstream_ignore_headers_masks[]
Igor Sysoev <igor@sysoev.ru>
parents:
3526
diff
changeset
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342 extern ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[]; |
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2875
6e1941b321b7
proxy_cache_methods and fastcgi_cache_methods
Igor Sysoev <igor@sysoev.ru>
parents:
2786
diff
changeset
|
343 |
| 479 | 344 |
| 345 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |