Mercurial > hg > nginx
annotate src/http/ngx_http_request.h @ 3139:5f6144fc674d
fix memory leak in resolver
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 16 Sep 2009 13:48:11 +0000 |
parents | 2f35eeea86c2 |
children | d430c6ab1c99 |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #ifndef _NGX_HTTP_REQUEST_H_INCLUDED_ |
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8 #define _NGX_HTTP_REQUEST_H_INCLUDED_ |
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10 |
651 | 11 #define NGX_HTTP_MAX_URI_CHANGES 10 |
657 | 12 #define NGX_HTTP_MAX_SUBREQUESTS 50 |
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13 #define NGX_HTTP_MAX_CAPTURES 9 |
509 | 14 |
649 | 15 /* must be 2^n */ |
16 #define NGX_HTTP_LC_HEADER_LEN 32 | |
17 | |
509 | 18 |
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19 #define NGX_HTTP_DISCARD_BUFFER_SIZE 4096 |
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20 #define NGX_HTTP_LINGERING_BUFFER_SIZE 4096 |
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21 |
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23 #define NGX_HTTP_VERSION_9 9 |
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24 #define NGX_HTTP_VERSION_10 1000 |
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25 #define NGX_HTTP_VERSION_11 1001 |
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26 |
633 | 27 #define NGX_HTTP_UNKNOWN 0x0001 |
28 #define NGX_HTTP_GET 0x0002 | |
29 #define NGX_HTTP_HEAD 0x0004 | |
30 #define NGX_HTTP_POST 0x0008 | |
31 #define NGX_HTTP_PUT 0x0010 | |
32 #define NGX_HTTP_DELETE 0x0020 | |
637 | 33 #define NGX_HTTP_MKCOL 0x0040 |
844 | 34 #define NGX_HTTP_COPY 0x0080 |
35 #define NGX_HTTP_MOVE 0x0100 | |
36 #define NGX_HTTP_OPTIONS 0x0200 | |
37 #define NGX_HTTP_PROPFIND 0x0400 | |
38 #define NGX_HTTP_PROPPATCH 0x0800 | |
39 #define NGX_HTTP_LOCK 0x1000 | |
40 #define NGX_HTTP_UNLOCK 0x2000 | |
1151 | 41 #define NGX_HTTP_TRACE 0x4000 |
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42 |
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43 #define NGX_HTTP_CONNECTION_CLOSE 1 |
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44 #define NGX_HTTP_CONNECTION_KEEP_ALIVE 2 |
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45 |
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47 #define NGX_NONE 1 |
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48 |
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49 |
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50 #define NGX_HTTP_PARSE_HEADER_DONE 1 |
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51 |
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52 #define NGX_HTTP_CLIENT_ERROR 10 |
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53 #define NGX_HTTP_PARSE_INVALID_METHOD 10 |
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54 #define NGX_HTTP_PARSE_INVALID_REQUEST 11 |
505 | 55 #define NGX_HTTP_PARSE_INVALID_09_METHOD 12 |
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56 |
505 | 57 #define NGX_HTTP_PARSE_INVALID_HEADER 13 |
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58 |
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573 | 60 #define NGX_HTTP_ZERO_IN_URI 1 |
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61 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2 |
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62 #define NGX_HTTP_SUBREQUEST_WAITED 4 |
573 | 63 |
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64 |
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65 #define NGX_HTTP_OK 200 |
633 | 66 #define NGX_HTTP_CREATED 201 |
511 | 67 #define NGX_HTTP_NO_CONTENT 204 |
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68 #define NGX_HTTP_PARTIAL_CONTENT 206 |
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69 |
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70 #define NGX_HTTP_SPECIAL_RESPONSE 300 |
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71 #define NGX_HTTP_MOVED_PERMANENTLY 301 |
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72 #define NGX_HTTP_MOVED_TEMPORARILY 302 |
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73 #define NGX_HTTP_NOT_MODIFIED 304 |
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74 |
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75 #define NGX_HTTP_BAD_REQUEST 400 |
503 | 76 #define NGX_HTTP_UNAUTHORIZED 401 |
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77 #define NGX_HTTP_FORBIDDEN 403 |
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78 #define NGX_HTTP_NOT_FOUND 404 |
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79 #define NGX_HTTP_NOT_ALLOWED 405 |
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80 #define NGX_HTTP_REQUEST_TIME_OUT 408 |
637 | 81 #define NGX_HTTP_CONFLICT 409 |
581 | 82 #define NGX_HTTP_LENGTH_REQUIRED 411 |
1057 | 83 #define NGX_HTTP_PRECONDITION_FAILED 412 |
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84 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413 |
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85 #define NGX_HTTP_REQUEST_URI_TOO_LARGE 414 |
637 | 86 #define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415 |
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87 #define NGX_HTTP_RANGE_NOT_SATISFIABLE 416 |
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88 |
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89 |
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90 /* Our own HTTP codes */ |
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91 |
587 | 92 /* The special code to close connection without any response */ |
93 #define NGX_HTTP_CLOSE 444 | |
94 | |
647 | 95 #define NGX_HTTP_OWN_CODES 495 |
96 | |
97 #define NGX_HTTPS_CERT_ERROR 495 | |
98 #define NGX_HTTPS_NO_CERT 496 | |
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99 |
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100 /* |
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101 * We use the special code for the plain HTTP requests that are sent to |
577 | 102 * HTTPS port to distinguish it from 4XX in an error page redirection |
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103 */ |
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104 #define NGX_HTTP_TO_HTTPS 497 |
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105 |
613 | 106 /* 498 is the canceled code for the requests with invalid host name */ |
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107 |
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108 /* |
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109 * HTTP does not define the code for the case when a client closed |
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110 * the connection while we are processing its request so we introduce |
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111 * own code to log such situation when a client has closed the connection |
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112 * before we even try to send the HTTP header to it |
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113 */ |
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114 #define NGX_HTTP_CLIENT_CLOSED_REQUEST 499 |
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115 |
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116 |
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117 #define NGX_HTTP_INTERNAL_SERVER_ERROR 500 |
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118 #define NGX_HTTP_NOT_IMPLEMENTED 501 |
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119 #define NGX_HTTP_BAD_GATEWAY 502 |
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120 #define NGX_HTTP_SERVICE_UNAVAILABLE 503 |
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121 #define NGX_HTTP_GATEWAY_TIME_OUT 504 |
637 | 122 #define NGX_HTTP_INSUFFICIENT_STORAGE 507 |
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123 |
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124 |
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125 #define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0 |
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126 #define NGX_HTTP_WRITE_BUFFERED 0x10 |
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127 #define NGX_HTTP_GZIP_BUFFERED 0x20 |
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128 #define NGX_HTTP_SSI_BUFFERED 0x01 |
1172 | 129 #define NGX_HTTP_SUB_BUFFERED 0x02 |
130 #define NGX_HTTP_COPY_BUFFERED 0x04 | |
597 | 131 |
132 | |
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133 typedef enum { |
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134 NGX_HTTP_INITING_REQUEST_STATE = 0, |
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135 NGX_HTTP_READING_REQUEST_STATE, |
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136 NGX_HTTP_PROCESS_REQUEST_STATE, |
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137 |
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138 NGX_HTTP_CONNECT_UPSTREAM_STATE, |
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139 NGX_HTTP_WRITING_UPSTREAM_STATE, |
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140 NGX_HTTP_READING_UPSTREAM_STATE, |
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141 |
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210
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142 NGX_HTTP_WRITING_REQUEST_STATE, |
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210
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143 NGX_HTTP_LINGERING_CLOSE_STATE, |
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144 NGX_HTTP_KEEPALIVE_STATE |
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145 } ngx_http_state_e; |
91
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146 |
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147 |
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148 typedef struct { |
501 | 149 ngx_str_t name; |
150 ngx_uint_t offset; | |
509 | 151 ngx_http_header_handler_pt handler; |
91
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152 } ngx_http_header_t; |
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153 |
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154 |
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155 typedef struct { |
509 | 156 ngx_str_t name; |
157 ngx_uint_t offset; | |
569 | 158 } ngx_http_header_out_t; |
509 | 159 |
160 | |
161 typedef struct { | |
501 | 162 ngx_list_t headers; |
164
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162
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163 |
501 | 164 ngx_table_elt_t *host; |
165 ngx_table_elt_t *connection; | |
166 ngx_table_elt_t *if_modified_since; | |
167 ngx_table_elt_t *user_agent; | |
168 ngx_table_elt_t *referer; | |
169 ngx_table_elt_t *content_length; | |
170 ngx_table_elt_t *content_type; | |
155
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171 |
501 | 172 ngx_table_elt_t *range; |
1630 | 173 ngx_table_elt_t *if_range; |
287
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174 |
581 | 175 ngx_table_elt_t *transfer_encoding; |
2067 | 176 ngx_table_elt_t *expect; |
581 | 177 |
287
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178 #if (NGX_HTTP_GZIP) |
501 | 179 ngx_table_elt_t *accept_encoding; |
180 ngx_table_elt_t *via; | |
287
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181 #endif |
99
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182 |
501 | 183 ngx_table_elt_t *authorization; |
172
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184 |
501 | 185 ngx_table_elt_t *keep_alive; |
91
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186 |
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187 #if (NGX_HTTP_PROXY || NGX_HTTP_REALIP || NGX_HTTP_GEO) |
501 | 188 ngx_table_elt_t *x_forwarded_for; |
287
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189 #endif |
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190 |
573 | 191 #if (NGX_HTTP_REALIP) |
192 ngx_table_elt_t *x_real_ip; | |
193 #endif | |
194 | |
489 | 195 #if (NGX_HTTP_HEADERS) |
501 | 196 ngx_table_elt_t *accept; |
197 ngx_table_elt_t *accept_language; | |
489 | 198 #endif |
199 | |
637 | 200 #if (NGX_HTTP_DAV) |
201 ngx_table_elt_t *depth; | |
202 ngx_table_elt_t *destination; | |
1059 | 203 ngx_table_elt_t *overwrite; |
681 | 204 ngx_table_elt_t *date; |
637 | 205 #endif |
206 | |
503 | 207 ngx_str_t user; |
208 ngx_str_t passwd; | |
209 | |
501 | 210 ngx_array_t cookies; |
211 | |
2007
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212 ngx_str_t server; |
663 | 213 off_t content_length_n; |
501 | 214 time_t keep_alive_n; |
408
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215 |
501 | 216 unsigned connection_type:2; |
217 unsigned msie:1; | |
218 unsigned msie4:1; | |
2205 | 219 unsigned msie6:1; |
501 | 220 unsigned opera:1; |
221 unsigned gecko:1; | |
222 unsigned konqueror:1; | |
91
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223 } ngx_http_headers_in_t; |
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224 |
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225 |
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226 typedef struct { |
501 | 227 ngx_list_t headers; |
164
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228 |
501 | 229 ngx_uint_t status; |
230 ngx_str_t status_line; | |
91
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231 |
501 | 232 ngx_table_elt_t *server; |
233 ngx_table_elt_t *date; | |
234 ngx_table_elt_t *content_length; | |
235 ngx_table_elt_t *content_encoding; | |
236 ngx_table_elt_t *location; | |
1654 | 237 ngx_table_elt_t *refresh; |
501 | 238 ngx_table_elt_t *last_modified; |
239 ngx_table_elt_t *content_range; | |
240 ngx_table_elt_t *accept_ranges; | |
503 | 241 ngx_table_elt_t *www_authenticate; |
501 | 242 ngx_table_elt_t *expires; |
243 ngx_table_elt_t *etag; | |
99
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244 |
657 | 245 ngx_str_t *override_charset; |
246 | |
247 size_t content_type_len; | |
509 | 248 ngx_str_t content_type; |
501 | 249 ngx_str_t charset; |
2138 | 250 u_char *content_type_lowcase; |
251 ngx_uint_t content_type_hash; | |
657 | 252 |
509 | 253 ngx_array_t cache_control; |
254 | |
501 | 255 off_t content_length_n; |
256 time_t date_time; | |
257 time_t last_modified_time; | |
91
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258 } ngx_http_headers_out_t; |
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259 |
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260 |
479 | 261 typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r); |
262 | |
297
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263 typedef struct { |
479 | 264 ngx_temp_file_t *temp_file; |
265 ngx_chain_t *bufs; | |
266 ngx_buf_t *buf; | |
663 | 267 off_t rest; |
633 | 268 ngx_chain_t *to_write; |
479 | 269 ngx_http_client_body_handler_pt post_handler; |
297
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270 } ngx_http_request_body_t; |
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271 |
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272 |
432
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273 typedef struct { |
501 | 274 ngx_http_request_t *request; |
433
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275 |
501 | 276 ngx_buf_t **busy; |
277 ngx_int_t nbusy; | |
433
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432
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278 |
501 | 279 ngx_buf_t **free; |
280 ngx_int_t nfree; | |
433
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281 |
501 | 282 ngx_uint_t pipeline; /* unsigned pipeline:1; */ |
432
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283 } ngx_http_connection_t; |
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284 |
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285 |
1387 | 286 typedef struct ngx_http_server_name_s ngx_http_server_name_t; |
287 | |
288 | |
289 typedef struct { | |
290 ngx_hash_combined_t names; | |
291 | |
292 ngx_uint_t nregex; | |
293 ngx_http_server_name_t *regex; | |
294 } ngx_http_virtual_names_t; | |
593 | 295 |
296 | |
569 | 297 typedef void (*ngx_http_cleanup_pt)(void *data); |
298 | |
299 typedef struct ngx_http_cleanup_s ngx_http_cleanup_t; | |
300 | |
301 struct ngx_http_cleanup_s { | |
593 | 302 ngx_http_cleanup_pt handler; |
303 void *data; | |
304 ngx_http_cleanup_t *next; | |
569 | 305 }; |
306 | |
307 | |
777
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308 typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r, |
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309 void *data, ngx_int_t rc); |
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310 |
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311 typedef struct { |
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312 ngx_http_post_subrequest_pt handler; |
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313 void *data; |
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314 } ngx_http_post_subrequest_t; |
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315 |
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316 |
509 | 317 typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t; |
318 | |
319 struct ngx_http_postponed_request_s { | |
535 | 320 ngx_http_request_t *request; |
321 ngx_chain_t *out; | |
322 ngx_http_postponed_request_t *next; | |
509 | 323 }; |
324 | |
325 | |
2377
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326 typedef struct ngx_http_posted_request_s ngx_http_posted_request_t; |
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327 |
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328 struct ngx_http_posted_request_s { |
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329 ngx_http_request_t *request; |
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330 ngx_http_posted_request_t *next; |
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331 }; |
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332 |
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333 |
356
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334 typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r); |
509 | 335 typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r); |
336 | |
143
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337 |
91
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338 struct ngx_http_request_s { |
501 | 339 uint32_t signature; /* "HTTP" */ |
367
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340 |
501 | 341 ngx_connection_t *connection; |
91
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342 |
501 | 343 void **ctx; |
344 void **main_conf; | |
345 void **srv_conf; | |
346 void **loc_conf; | |
91
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347 |
509 | 348 ngx_http_event_handler_pt read_event_handler; |
349 ngx_http_event_handler_pt write_event_handler; | |
350 | |
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351 #if (NGX_HTTP_CACHE) |
501 | 352 ngx_http_cache_t *cache; |
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353 #endif |
197
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354 |
501 | 355 ngx_http_upstream_t *upstream; |
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356 ngx_array_t *upstream_states; |
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357 /* of ngx_http_upstream_state_t */ |
479 | 358 |
501 | 359 ngx_pool_t *pool; |
360 ngx_buf_t *header_in; | |
91
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361 |
501 | 362 ngx_http_headers_in_t headers_in; |
363 ngx_http_headers_out_t headers_out; | |
91
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364 |
501 | 365 ngx_http_request_body_t *request_body; |
297
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366 |
501 | 367 time_t lingering_time; |
1179
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368 time_t start_sec; |
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369 ngx_msec_t start_msec; |
91
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370 |
501 | 371 ngx_uint_t method; |
372 ngx_uint_t http_version; | |
577 | 373 |
501 | 374 ngx_str_t request_line; |
375 ngx_str_t uri; | |
376 ngx_str_t args; | |
377 ngx_str_t exten; | |
378 ngx_str_t unparsed_uri; | |
314
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379 |
501 | 380 ngx_str_t method_name; |
381 ngx_str_t http_protocol; | |
577 | 382 |
509 | 383 ngx_chain_t *out; |
501 | 384 ngx_http_request_t *main; |
509 | 385 ngx_http_request_t *parent; |
386 ngx_http_postponed_request_t *postponed; | |
777
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387 ngx_http_post_subrequest_t *post_subrequest; |
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388 ngx_http_posted_request_t *posted_requests; |
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389 |
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390 ngx_http_virtual_names_t *virtual_names; |
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391 |
501 | 392 ngx_int_t phase_handler; |
393 ngx_http_handler_pt content_handler; | |
543 | 394 ngx_uint_t access_code; |
485 | 395 |
573 | 396 ngx_http_variable_value_t *variables; |
501 | 397 |
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398 #if (NGX_PCRE) |
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399 ngx_uint_t ncaptures; |
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400 int *captures; |
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401 u_char *captures_data; |
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402 #endif |
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403 |
527 | 404 size_t limit_rate; |
405 | |
297
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406 /* used to learn the Apache compatible response length without a header */ |
501 | 407 size_t header_size; |
210
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408 |
663 | 409 off_t request_length; |
475 | 410 |
501 | 411 ngx_uint_t err_status; |
91
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412 |
501 | 413 ngx_http_connection_t *http_connection; |
432
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414 |
509 | 415 ngx_http_log_handler_pt log_handler; |
416 | |
569 | 417 ngx_http_cleanup_t *cleanup; |
418 | |
3052
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419 unsigned subrequests:8; |
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420 unsigned count:8; |
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421 unsigned blocked:8; |
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422 |
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423 unsigned aio:1; |
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424 |
501 | 425 unsigned http_state:4; |
216
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426 |
452 | 427 /* URI with "/." and on Win32 with "//" */ |
501 | 428 unsigned complex_uri:1; |
485 | 429 |
452 | 430 /* URI with "%" */ |
501 | 431 unsigned quoted_uri:1; |
485 | 432 |
433 /* URI with "+" */ | |
501 | 434 unsigned plus_in_uri:1; |
485 | 435 |
489 | 436 /* URI with "\0" or "%00" */ |
501 | 437 unsigned zero_in_uri:1; |
489 | 438 |
511 | 439 unsigned invalid_header:1; |
440 | |
509 | 441 unsigned valid_location:1; |
505 | 442 unsigned valid_unparsed_uri:1; |
501 | 443 unsigned uri_changed:1; |
444 unsigned uri_changes:4; | |
485 | 445 |
633 | 446 unsigned request_body_in_single_buf:1; |
447 unsigned request_body_in_file_only:1; | |
448 unsigned request_body_in_persistent_file:1; | |
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449 unsigned request_body_in_clean_file:1; |
633 | 450 unsigned request_body_file_group_access:1; |
637 | 451 unsigned request_body_file_log_level:3; |
633 | 452 |
777
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453 unsigned subrequest_in_memory:1; |
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454 unsigned waited:1; |
597 | 455 |
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456 #if (NGX_HTTP_CACHE) |
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457 unsigned cached:1; |
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458 #endif |
1790
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459 unsigned gzip:2; |
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460 |
501 | 461 unsigned proxy:1; |
462 unsigned bypass_cache:1; | |
463 unsigned no_cache:1; | |
170
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464 |
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465 /* |
2294 | 466 * instead of using the request context data in |
2301
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467 * ngx_http_limit_zone_module and ngx_http_limit_req_module |
2294 | 468 * we use the single bits in the request structure |
984
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469 */ |
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470 unsigned limit_zone_set:1; |
2294 | 471 unsigned limit_req_set:1; |
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472 |
99
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473 #if 0 |
1565 | 474 unsigned cacheable:1; |
99
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475 #endif |
509 | 476 |
501 | 477 unsigned pipeline:1; |
478 unsigned plain_http:1; | |
479 unsigned chunked:1; | |
480 unsigned header_only:1; | |
730
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481 unsigned zero_body:1; |
501 | 482 unsigned keepalive:1; |
483 unsigned lingering_close:1; | |
537 | 484 unsigned discard_body:1; |
509 | 485 unsigned internal:1; |
679 | 486 unsigned error_page:1; |
2877
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487 unsigned ignore_content_encoding:1; |
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488 unsigned filter_finalize:1; |
629 | 489 unsigned post_action:1; |
490 unsigned request_complete:1; | |
667 | 491 unsigned request_output:1; |
492 unsigned header_sent:1; | |
2067 | 493 unsigned expect_tested:1; |
2087
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494 unsigned root_tested:1; |
509 | 495 unsigned done:1; |
2265 | 496 unsigned logged:1; |
99
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diff
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497 |
829
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high level HTTP buffered flags should be on per-subrequest basis,
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498 unsigned buffered:4; |
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499 |
513 | 500 unsigned main_filter_need_in_memory:1; |
501 | 501 unsigned filter_need_in_memory:1; |
502 unsigned filter_need_temporary:1; | |
581 | 503 unsigned allow_ranges:1; |
91
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504 |
427
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426
diff
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505 #if (NGX_STAT_STUB) |
501 | 506 unsigned stat_reading:1; |
507 unsigned stat_writing:1; | |
427
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508 #endif |
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509 |
99
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510 /* used to parse HTTP headers */ |
772
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diff
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511 |
501 | 512 ngx_uint_t state; |
3064 | 513 |
514 ngx_uint_t header_hash; | |
515 ngx_uint_t lowcase_index; | |
516 u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN]; | |
517 | |
518 u_char *header_name_start; | |
519 u_char *header_name_end; | |
520 u_char *header_start; | |
521 u_char *header_end; | |
522 | |
523 /* | |
524 * a memory that can be reused after parsing a request line | |
525 * via ngx_http_ephemeral_t | |
526 */ | |
527 | |
501 | 528 u_char *uri_start; |
529 u_char *uri_end; | |
530 u_char *uri_ext; | |
531 u_char *args_start; | |
532 u_char *request_start; | |
533 u_char *request_end; | |
534 u_char *method_end; | |
535 u_char *schema_start; | |
536 u_char *schema_end; | |
537 u_char *host_start; | |
538 u_char *host_end; | |
539 u_char *port_start; | |
540 u_char *port_end; | |
649 | 541 |
772
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542 unsigned http_minor:16; |
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changeset
|
543 unsigned http_major:16; |
3064 | 544 }; |
772
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545 |
3064 | 546 |
547 typedef struct { | |
548 ngx_http_posted_request_t terminal_posted_request; | |
3065 | 549 #if (NGX_HAVE_AIO_SENDFILE) |
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550 u_char aio_preload; |
3065 | 551 #endif |
3064 | 552 } ngx_http_ephemeral_t; |
91
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553 |
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554 |
569 | 555 extern ngx_http_header_t ngx_http_headers_in[]; |
556 extern ngx_http_header_out_t ngx_http_headers_out[]; | |
164
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162
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557 |
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558 |
91
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559 #endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */ |