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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #ifndef _NGX_HTTP_REQUEST_H_INCLUDED_
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9 #define _NGX_HTTP_REQUEST_H_INCLUDED_
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10
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11
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200
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12 #define NGX_HTTP_MAX_URI_CHANGES 10
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664
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13 #define NGX_HTTP_MAX_SUBREQUESTS 200
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58
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14
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198
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15 /* must be 2^n */
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16 #define NGX_HTTP_LC_HEADER_LEN 32
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17
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58
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18
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0
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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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22
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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
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182
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27 #define NGX_HTTP_UNKNOWN 0x0001
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28 #define NGX_HTTP_GET 0x0002
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29 #define NGX_HTTP_HEAD 0x0004
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30 #define NGX_HTTP_POST 0x0008
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31 #define NGX_HTTP_PUT 0x0010
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32 #define NGX_HTTP_DELETE 0x0020
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186
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33 #define NGX_HTTP_MKCOL 0x0040
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256
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34 #define NGX_HTTP_COPY 0x0080
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35 #define NGX_HTTP_MOVE 0x0100
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36 #define NGX_HTTP_OPTIONS 0x0200
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37 #define NGX_HTTP_PROPFIND 0x0400
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38 #define NGX_HTTP_PROPPATCH 0x0800
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39 #define NGX_HTTP_LOCK 0x1000
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40 #define NGX_HTTP_UNLOCK 0x2000
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578
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41 #define NGX_HTTP_PATCH 0x4000
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42 #define NGX_HTTP_TRACE 0x8000
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0
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43
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44 #define NGX_HTTP_CONNECTION_CLOSE 1
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45 #define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
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46
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47
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48 #define NGX_NONE 1
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49
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50
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51 #define NGX_HTTP_PARSE_HEADER_DONE 1
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52
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53 #define NGX_HTTP_CLIENT_ERROR 10
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54 #define NGX_HTTP_PARSE_INVALID_METHOD 10
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55 #define NGX_HTTP_PARSE_INVALID_REQUEST 11
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54
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56 #define NGX_HTTP_PARSE_INVALID_09_METHOD 12
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0
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57
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54
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58 #define NGX_HTTP_PARSE_INVALID_HEADER 13
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0
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59
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248
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60
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572
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61 /* unused 1 */
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248
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62 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2
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426
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63 #define NGX_HTTP_SUBREQUEST_WAITED 4
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530
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64 #define NGX_HTTP_LOG_UNSAFE 8
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122
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65
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0
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66
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67 #define NGX_HTTP_OK 200
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182
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68 #define NGX_HTTP_CREATED 201
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578
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69 #define NGX_HTTP_ACCEPTED 202
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60
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70 #define NGX_HTTP_NO_CONTENT 204
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0
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71 #define NGX_HTTP_PARTIAL_CONTENT 206
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72
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73 #define NGX_HTTP_SPECIAL_RESPONSE 300
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74 #define NGX_HTTP_MOVED_PERMANENTLY 301
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75 #define NGX_HTTP_MOVED_TEMPORARILY 302
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580
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76 #define NGX_HTTP_SEE_OTHER 303
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0
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77 #define NGX_HTTP_NOT_MODIFIED 304
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664
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78 #define NGX_HTTP_TEMPORARY_REDIRECT 307
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0
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79
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80 #define NGX_HTTP_BAD_REQUEST 400
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52
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81 #define NGX_HTTP_UNAUTHORIZED 401
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0
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82 #define NGX_HTTP_FORBIDDEN 403
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83 #define NGX_HTTP_NOT_FOUND 404
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84 #define NGX_HTTP_NOT_ALLOWED 405
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85 #define NGX_HTTP_REQUEST_TIME_OUT 408
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186
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86 #define NGX_HTTP_CONFLICT 409
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130
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87 #define NGX_HTTP_LENGTH_REQUIRED 411
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276
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88 #define NGX_HTTP_PRECONDITION_FAILED 412
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0
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89 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
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90 #define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
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186
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91 #define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415
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0
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92 #define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
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93
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94
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95 /* Our own HTTP codes */
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96
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136
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97 /* The special code to close connection without any response */
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98 #define NGX_HTTP_CLOSE 444
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99
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612
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100 #define NGX_HTTP_NGINX_CODES 494
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101
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102 #define NGX_HTTP_REQUEST_HEADER_TOO_LARGE 494
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196
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103
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104 #define NGX_HTTPS_CERT_ERROR 495
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105 #define NGX_HTTPS_NO_CERT 496
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0
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106
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107 /*
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108 * We use the special code for the plain HTTP requests that are sent to
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126
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109 * HTTPS port to distinguish it from 4XX in an error page redirection
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0
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110 */
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111 #define NGX_HTTP_TO_HTTPS 497
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112
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162
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113 /* 498 is the canceled code for the requests with invalid host name */
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0
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114
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115 /*
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116 * HTTP does not define the code for the case when a client closed
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117 * the connection while we are processing its request so we introduce
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118 * own code to log such situation when a client has closed the connection
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119 * before we even try to send the HTTP header to it
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120 */
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121 #define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
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122
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123
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124 #define NGX_HTTP_INTERNAL_SERVER_ERROR 500
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125 #define NGX_HTTP_NOT_IMPLEMENTED 501
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126 #define NGX_HTTP_BAD_GATEWAY 502
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127 #define NGX_HTTP_SERVICE_UNAVAILABLE 503
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128 #define NGX_HTTP_GATEWAY_TIME_OUT 504
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186
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129 #define NGX_HTTP_INSUFFICIENT_STORAGE 507
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0
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130
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131
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254
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132 #define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0
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133 #define NGX_HTTP_WRITE_BUFFERED 0x10
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134 #define NGX_HTTP_GZIP_BUFFERED 0x20
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135 #define NGX_HTTP_SSI_BUFFERED 0x01
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296
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136 #define NGX_HTTP_SUB_BUFFERED 0x02
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137 #define NGX_HTTP_COPY_BUFFERED 0x04
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146
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138
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139
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0
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140 typedef enum {
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141 NGX_HTTP_INITING_REQUEST_STATE = 0,
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142 NGX_HTTP_READING_REQUEST_STATE,
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143 NGX_HTTP_PROCESS_REQUEST_STATE,
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144
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145 NGX_HTTP_CONNECT_UPSTREAM_STATE,
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146 NGX_HTTP_WRITING_UPSTREAM_STATE,
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147 NGX_HTTP_READING_UPSTREAM_STATE,
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148
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149 NGX_HTTP_WRITING_REQUEST_STATE,
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150 NGX_HTTP_LINGERING_CLOSE_STATE,
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151 NGX_HTTP_KEEPALIVE_STATE
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152 } ngx_http_state_e;
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153
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154
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155 typedef struct {
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50
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156 ngx_str_t name;
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157 ngx_uint_t offset;
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58
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158 ngx_http_header_handler_pt handler;
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0
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159 } ngx_http_header_t;
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160
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161
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162 typedef struct {
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58
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163 ngx_str_t name;
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164 ngx_uint_t offset;
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118
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165 } ngx_http_header_out_t;
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58
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166
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167
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168 typedef struct {
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50
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169 ngx_list_t headers;
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0
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170
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50
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171 ngx_table_elt_t *host;
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172 ngx_table_elt_t *connection;
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173 ngx_table_elt_t *if_modified_since;
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608
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174 ngx_table_elt_t *if_unmodified_since;
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680
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175 ngx_table_elt_t *if_match;
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176 ngx_table_elt_t *if_none_match;
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50
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177 ngx_table_elt_t *user_agent;
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178 ngx_table_elt_t *referer;
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179 ngx_table_elt_t *content_length;
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180 ngx_table_elt_t *content_type;
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0
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181
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50
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182 ngx_table_elt_t *range;
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346
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183 ngx_table_elt_t *if_range;
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0
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184
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130
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185 ngx_table_elt_t *transfer_encoding;
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384
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186 ngx_table_elt_t *expect;
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130
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187
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0
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188 #if (NGX_HTTP_GZIP)
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50
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189 ngx_table_elt_t *accept_encoding;
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190 ngx_table_elt_t *via;
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0
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191 #endif
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192
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50
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193 ngx_table_elt_t *authorization;
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0
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194
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50
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195 ngx_table_elt_t *keep_alive;
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0
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196
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678
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197 #if (NGX_HTTP_X_FORWARDED_FOR)
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50
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198 ngx_table_elt_t *x_forwarded_for;
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0
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199 #endif
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200
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122
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201 #if (NGX_HTTP_REALIP)
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202 ngx_table_elt_t *x_real_ip;
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203 #endif
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204
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38
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205 #if (NGX_HTTP_HEADERS)
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50
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206 ngx_table_elt_t *accept;
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207 ngx_table_elt_t *accept_language;
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38
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208 #endif
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209
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186
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210 #if (NGX_HTTP_DAV)
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211 ngx_table_elt_t *depth;
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212 ngx_table_elt_t *destination;
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276
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213 ngx_table_elt_t *overwrite;
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230
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214 ngx_table_elt_t *date;
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186
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215 #endif
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216
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52
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217 ngx_str_t user;
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218 ngx_str_t passwd;
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219
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50
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220 ngx_array_t cookies;
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221
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376
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222 ngx_str_t server;
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212
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223 off_t content_length_n;
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50
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224 time_t keep_alive_n;
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0
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225
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50
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226 unsigned connection_type:2;
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227 unsigned msie:1;
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400
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228 unsigned msie6:1;
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50
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229 unsigned opera:1;
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230 unsigned gecko:1;
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546
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231 unsigned chrome:1;
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562
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232 unsigned safari:1;
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50
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233 unsigned konqueror:1;
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0
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234 } ngx_http_headers_in_t;
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235
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236
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237 typedef struct {
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50
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238 ngx_list_t headers;
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0
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239
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50
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240 ngx_uint_t status;
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241 ngx_str_t status_line;
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0
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242
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50
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243 ngx_table_elt_t *server;
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244 ngx_table_elt_t *date;
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245 ngx_table_elt_t *content_length;
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246 ngx_table_elt_t *content_encoding;
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247 ngx_table_elt_t *location;
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348
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248 ngx_table_elt_t *refresh;
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50
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249 ngx_table_elt_t *last_modified;
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250 ngx_table_elt_t *content_range;
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251 ngx_table_elt_t *accept_ranges;
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52
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252 ngx_table_elt_t *www_authenticate;
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50
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253 ngx_table_elt_t *expires;
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254 ngx_table_elt_t *etag;
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0
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255
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206
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256 ngx_str_t *override_charset;
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257
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258 size_t content_type_len;
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58
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259 ngx_str_t content_type;
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50
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260 ngx_str_t charset;
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392
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261 u_char *content_type_lowcase;
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262 ngx_uint_t content_type_hash;
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206
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263
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58
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264 ngx_array_t cache_control;
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265
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50
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266 off_t content_length_n;
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267 time_t date_time;
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268 time_t last_modified_time;
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0
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269 } ngx_http_headers_out_t;
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270
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271
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28
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272 typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
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273
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0
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274 typedef struct {
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28
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275 ngx_temp_file_t *temp_file;
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276 ngx_chain_t *bufs;
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277 ngx_buf_t *buf;
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212
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278 off_t rest;
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182
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279 ngx_chain_t *to_write;
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28
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280 ngx_http_client_body_handler_pt post_handler;
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0
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281 } ngx_http_request_body_t;
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282
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283
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284 typedef struct {
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50
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285 ngx_http_request_t *request;
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0
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286
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50
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287 ngx_buf_t **busy;
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288 ngx_int_t nbusy;
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0
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289
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50
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290 ngx_buf_t **free;
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291 ngx_int_t nfree;
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0
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292
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50
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293 ngx_uint_t pipeline; /* unsigned pipeline:1; */
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0
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294 } ngx_http_connection_t;
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295
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296
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326
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297 typedef struct ngx_http_server_name_s ngx_http_server_name_t;
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298
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299
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300 typedef struct {
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301 ngx_hash_combined_t names;
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302
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303 ngx_uint_t nregex;
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304 ngx_http_server_name_t *regex;
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305 } ngx_http_virtual_names_t;
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142
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306
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307
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118
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308 typedef void (*ngx_http_cleanup_pt)(void *data);
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309
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310 typedef struct ngx_http_cleanup_s ngx_http_cleanup_t;
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311
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312 struct ngx_http_cleanup_s {
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142
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313 ngx_http_cleanup_pt handler;
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314 void *data;
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315 ngx_http_cleanup_t *next;
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118
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316 };
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317
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318
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248
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319 typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r,
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320 void *data, ngx_int_t rc);
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321
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322 typedef struct {
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323 ngx_http_post_subrequest_pt handler;
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324 void *data;
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325 } ngx_http_post_subrequest_t;
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326
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327
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58
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328 typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
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329
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330 struct ngx_http_postponed_request_s {
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84
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331 ngx_http_request_t *request;
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332 ngx_chain_t *out;
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333 ngx_http_postponed_request_t *next;
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58
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334 };
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335
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336
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426
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337 typedef struct ngx_http_posted_request_s ngx_http_posted_request_t;
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338
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339 struct ngx_http_posted_request_s {
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340 ngx_http_request_t *request;
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341 ngx_http_posted_request_t *next;
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342 };
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343
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344
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0
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345 typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
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58
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346 typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
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347
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0
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348
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349 struct ngx_http_request_s {
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50
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350 uint32_t signature; /* "HTTP" */
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0
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351
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50
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352 ngx_connection_t *connection;
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0
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353
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50
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354 void **ctx;
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355 void **main_conf;
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356 void **srv_conf;
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357 void **loc_conf;
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0
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358
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58
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359 ngx_http_event_handler_pt read_event_handler;
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360 ngx_http_event_handler_pt write_event_handler;
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361
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464
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362 #if (NGX_HTTP_CACHE)
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50
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363 ngx_http_cache_t *cache;
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464
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364 #endif
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0
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365
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50
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366 ngx_http_upstream_t *upstream;
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296
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367 ngx_array_t *upstream_states;
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368 /* of ngx_http_upstream_state_t */
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28
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369
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50
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370 ngx_pool_t *pool;
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371 ngx_buf_t *header_in;
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0
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372
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50
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373 ngx_http_headers_in_t headers_in;
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374 ngx_http_headers_out_t headers_out;
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0
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375
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50
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376 ngx_http_request_body_t *request_body;
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0
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377
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50
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378 time_t lingering_time;
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298
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379 time_t start_sec;
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380 ngx_msec_t start_msec;
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0
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381
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50
|
382 ngx_uint_t method;
|
|
|
383 ngx_uint_t http_version;
|
|
126
|
384
|
|
50
|
385 ngx_str_t request_line;
|
|
|
386 ngx_str_t uri;
|
|
|
387 ngx_str_t args;
|
|
|
388 ngx_str_t exten;
|
|
|
389 ngx_str_t unparsed_uri;
|
|
0
|
390
|
|
50
|
391 ngx_str_t method_name;
|
|
|
392 ngx_str_t http_protocol;
|
|
126
|
393
|
|
58
|
394 ngx_chain_t *out;
|
|
50
|
395 ngx_http_request_t *main;
|
|
58
|
396 ngx_http_request_t *parent;
|
|
|
397 ngx_http_postponed_request_t *postponed;
|
|
248
|
398 ngx_http_post_subrequest_t *post_subrequest;
|
|
426
|
399 ngx_http_posted_request_t *posted_requests;
|
|
0
|
400
|
|
478
|
401 ngx_http_virtual_names_t *virtual_names;
|
|
|
402
|
|
50
|
403 ngx_int_t phase_handler;
|
|
|
404 ngx_http_handler_pt content_handler;
|
|
92
|
405 ngx_uint_t access_code;
|
|
34
|
406
|
|
122
|
407 ngx_http_variable_value_t *variables;
|
|
50
|
408
|
|
456
|
409 #if (NGX_PCRE)
|
|
|
410 ngx_uint_t ncaptures;
|
|
|
411 int *captures;
|
|
|
412 u_char *captures_data;
|
|
|
413 #endif
|
|
|
414
|
|
76
|
415 size_t limit_rate;
|
|
|
416
|
|
0
|
417 /* used to learn the Apache compatible response length without a header */
|
|
50
|
418 size_t header_size;
|
|
0
|
419
|
|
212
|
420 off_t request_length;
|
|
24
|
421
|
|
50
|
422 ngx_uint_t err_status;
|
|
0
|
423
|
|
50
|
424 ngx_http_connection_t *http_connection;
|
|
0
|
425
|
|
58
|
426 ngx_http_log_handler_pt log_handler;
|
|
|
427
|
|
118
|
428 ngx_http_cleanup_t *cleanup;
|
|
|
429
|
|
518
|
430 unsigned subrequests:8;
|
|
|
431 unsigned count:8;
|
|
|
432 unsigned blocked:8;
|
|
|
433
|
|
|
434 unsigned aio:1;
|
|
|
435
|
|
50
|
436 unsigned http_state:4;
|
|
0
|
437
|
|
2
|
438 /* URI with "/." and on Win32 with "//" */
|
|
50
|
439 unsigned complex_uri:1;
|
|
34
|
440
|
|
2
|
441 /* URI with "%" */
|
|
50
|
442 unsigned quoted_uri:1;
|
|
34
|
443
|
|
|
444 /* URI with "+" */
|
|
50
|
445 unsigned plus_in_uri:1;
|
|
34
|
446
|
|
578
|
447 /* URI with " " */
|
|
|
448 unsigned space_in_uri:1;
|
|
|
449
|
|
60
|
450 unsigned invalid_header:1;
|
|
|
451
|
|
574
|
452 unsigned add_uri_to_alias:1;
|
|
58
|
453 unsigned valid_location:1;
|
|
54
|
454 unsigned valid_unparsed_uri:1;
|
|
50
|
455 unsigned uri_changed:1;
|
|
|
456 unsigned uri_changes:4;
|
|
34
|
457
|
|
182
|
458 unsigned request_body_in_single_buf:1;
|
|
|
459 unsigned request_body_in_file_only:1;
|
|
|
460 unsigned request_body_in_persistent_file:1;
|
|
278
|
461 unsigned request_body_in_clean_file:1;
|
|
182
|
462 unsigned request_body_file_group_access:1;
|
|
186
|
463 unsigned request_body_file_log_level:3;
|
|
182
|
464
|
|
248
|
465 unsigned subrequest_in_memory:1;
|
|
426
|
466 unsigned waited:1;
|
|
146
|
467
|
|
464
|
468 #if (NGX_HTTP_CACHE)
|
|
|
469 unsigned cached:1;
|
|
|
470 #endif
|
|
546
|
471
|
|
|
472 #if (NGX_HTTP_GZIP)
|
|
|
473 unsigned gzip_tested:1;
|
|
|
474 unsigned gzip_ok:1;
|
|
|
475 unsigned gzip_vary:1;
|
|
|
476 #endif
|
|
358
|
477
|
|
50
|
478 unsigned proxy:1;
|
|
|
479 unsigned bypass_cache:1;
|
|
|
480 unsigned no_cache:1;
|
|
0
|
481
|
|
272
|
482 /*
|
|
416
|
483 * instead of using the request context data in
|
|
662
|
484 * ngx_http_limit_conn_module and ngx_http_limit_req_module
|
|
416
|
485 * we use the single bits in the request structure
|
|
272
|
486 */
|
|
648
|
487 unsigned limit_conn_set:1;
|
|
416
|
488 unsigned limit_req_set:1;
|
|
272
|
489
|
|
0
|
490 #if 0
|
|
340
|
491 unsigned cacheable:1;
|
|
0
|
492 #endif
|
|
58
|
493
|
|
50
|
494 unsigned pipeline:1;
|
|
|
495 unsigned plain_http:1;
|
|
|
496 unsigned chunked:1;
|
|
|
497 unsigned header_only:1;
|
|
|
498 unsigned keepalive:1;
|
|
|
499 unsigned lingering_close:1;
|
|
86
|
500 unsigned discard_body:1;
|
|
58
|
501 unsigned internal:1;
|
|
228
|
502 unsigned error_page:1;
|
|
494
|
503 unsigned ignore_content_encoding:1;
|
|
488
|
504 unsigned filter_finalize:1;
|
|
178
|
505 unsigned post_action:1;
|
|
|
506 unsigned request_complete:1;
|
|
216
|
507 unsigned request_output:1;
|
|
|
508 unsigned header_sent:1;
|
|
384
|
509 unsigned expect_tested:1;
|
|
388
|
510 unsigned root_tested:1;
|
|
58
|
511 unsigned done:1;
|
|
412
|
512 unsigned logged:1;
|
|
0
|
513
|
|
254
|
514 unsigned buffered:4;
|
|
|
515
|
|
62
|
516 unsigned main_filter_need_in_memory:1;
|
|
50
|
517 unsigned filter_need_in_memory:1;
|
|
|
518 unsigned filter_need_temporary:1;
|
|
130
|
519 unsigned allow_ranges:1;
|
|
0
|
520
|
|
|
521 #if (NGX_STAT_STUB)
|
|
50
|
522 unsigned stat_reading:1;
|
|
|
523 unsigned stat_writing:1;
|
|
0
|
524 #endif
|
|
|
525
|
|
|
526 /* used to parse HTTP headers */
|
|
248
|
527
|
|
50
|
528 ngx_uint_t state;
|
|
520
|
529
|
|
|
530 ngx_uint_t header_hash;
|
|
|
531 ngx_uint_t lowcase_index;
|
|
|
532 u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN];
|
|
|
533
|
|
|
534 u_char *header_name_start;
|
|
|
535 u_char *header_name_end;
|
|
|
536 u_char *header_start;
|
|
|
537 u_char *header_end;
|
|
|
538
|
|
|
539 /*
|
|
|
540 * a memory that can be reused after parsing a request line
|
|
|
541 * via ngx_http_ephemeral_t
|
|
|
542 */
|
|
|
543
|
|
50
|
544 u_char *uri_start;
|
|
|
545 u_char *uri_end;
|
|
|
546 u_char *uri_ext;
|
|
|
547 u_char *args_start;
|
|
|
548 u_char *request_start;
|
|
|
549 u_char *request_end;
|
|
|
550 u_char *method_end;
|
|
|
551 u_char *schema_start;
|
|
|
552 u_char *schema_end;
|
|
|
553 u_char *host_start;
|
|
|
554 u_char *host_end;
|
|
|
555 u_char *port_start;
|
|
|
556 u_char *port_end;
|
|
198
|
557
|
|
248
|
558 unsigned http_minor:16;
|
|
|
559 unsigned http_major:16;
|
|
520
|
560 };
|
|
248
|
561
|
|
520
|
562
|
|
|
563 typedef struct {
|
|
|
564 ngx_http_posted_request_t terminal_posted_request;
|
|
|
565 #if (NGX_HAVE_AIO_SENDFILE)
|
|
524
|
566 u_char aio_preload;
|
|
520
|
567 #endif
|
|
|
568 } ngx_http_ephemeral_t;
|
|
0
|
569
|
|
|
570
|
|
118
|
571 extern ngx_http_header_t ngx_http_headers_in[];
|
|
|
572 extern ngx_http_header_out_t ngx_http_headers_out[];
|
|
0
|
573
|
|
|
574
|
|
|
575 #endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */
|
