0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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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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9
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10
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200
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11 #define NGX_HTTP_MAX_URI_CHANGES 10
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206
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12 #define NGX_HTTP_MAX_SUBREQUESTS 50
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58
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13
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198
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14 /* must be 2^n */
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15 #define NGX_HTTP_LC_HEADER_LEN 32
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16
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58
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17
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0
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18 #define NGX_HTTP_DISCARD_BUFFER_SIZE 4096
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19 #define NGX_HTTP_LINGERING_BUFFER_SIZE 4096
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20
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21
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22 #define NGX_HTTP_VERSION_9 9
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23 #define NGX_HTTP_VERSION_10 1000
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24 #define NGX_HTTP_VERSION_11 1001
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25
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182
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26 #define NGX_HTTP_UNKNOWN 0x0001
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27 #define NGX_HTTP_GET 0x0002
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28 #define NGX_HTTP_HEAD 0x0004
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29 #define NGX_HTTP_POST 0x0008
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30 #define NGX_HTTP_PUT 0x0010
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31 #define NGX_HTTP_DELETE 0x0020
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186
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32 #define NGX_HTTP_MKCOL 0x0040
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256
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33 #define NGX_HTTP_COPY 0x0080
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34 #define NGX_HTTP_MOVE 0x0100
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35 #define NGX_HTTP_OPTIONS 0x0200
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36 #define NGX_HTTP_PROPFIND 0x0400
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37 #define NGX_HTTP_PROPPATCH 0x0800
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38 #define NGX_HTTP_LOCK 0x1000
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39 #define NGX_HTTP_UNLOCK 0x2000
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294
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40 #define NGX_HTTP_TRACE 0x4000
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0
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41
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42 #define NGX_HTTP_CONNECTION_CLOSE 1
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43 #define NGX_HTTP_CONNECTION_KEEP_ALIVE 2
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44
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45
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46 #define NGX_NONE 1
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47
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48
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49 #define NGX_HTTP_PARSE_HEADER_DONE 1
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50
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51 #define NGX_HTTP_CLIENT_ERROR 10
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52 #define NGX_HTTP_PARSE_INVALID_METHOD 10
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53 #define NGX_HTTP_PARSE_INVALID_REQUEST 11
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54
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54 #define NGX_HTTP_PARSE_INVALID_09_METHOD 12
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0
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55
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54
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56 #define NGX_HTTP_PARSE_INVALID_HEADER 13
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0
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57
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248
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58
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122
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59 #define NGX_HTTP_ZERO_IN_URI 1
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248
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60 #define NGX_HTTP_SUBREQUEST_IN_MEMORY 2
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455
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61 #define NGX_HTTP_SUBREQUEST_WAITED 4
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122
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62
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0
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63
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64 #define NGX_HTTP_OK 200
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182
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65 #define NGX_HTTP_CREATED 201
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60
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66 #define NGX_HTTP_NO_CONTENT 204
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0
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67 #define NGX_HTTP_PARTIAL_CONTENT 206
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68
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69 #define NGX_HTTP_SPECIAL_RESPONSE 300
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70 #define NGX_HTTP_MOVED_PERMANENTLY 301
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71 #define NGX_HTTP_MOVED_TEMPORARILY 302
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72 #define NGX_HTTP_NOT_MODIFIED 304
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73
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74 #define NGX_HTTP_BAD_REQUEST 400
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52
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75 #define NGX_HTTP_UNAUTHORIZED 401
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0
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76 #define NGX_HTTP_FORBIDDEN 403
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77 #define NGX_HTTP_NOT_FOUND 404
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78 #define NGX_HTTP_NOT_ALLOWED 405
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79 #define NGX_HTTP_REQUEST_TIME_OUT 408
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186
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80 #define NGX_HTTP_CONFLICT 409
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130
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81 #define NGX_HTTP_LENGTH_REQUIRED 411
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276
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82 #define NGX_HTTP_PRECONDITION_FAILED 412
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0
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83 #define NGX_HTTP_REQUEST_ENTITY_TOO_LARGE 413
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84 #define NGX_HTTP_REQUEST_URI_TOO_LARGE 414
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186
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85 #define NGX_HTTP_UNSUPPORTED_MEDIA_TYPE 415
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0
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86 #define NGX_HTTP_RANGE_NOT_SATISFIABLE 416
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87
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88
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89 /* Our own HTTP codes */
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90
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136
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91 /* The special code to close connection without any response */
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92 #define NGX_HTTP_CLOSE 444
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93
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196
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94 #define NGX_HTTP_OWN_CODES 495
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95
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96 #define NGX_HTTPS_CERT_ERROR 495
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97 #define NGX_HTTPS_NO_CERT 496
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0
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98
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99 /*
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100 * We use the special code for the plain HTTP requests that are sent to
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126
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101 * HTTPS port to distinguish it from 4XX in an error page redirection
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0
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102 */
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103 #define NGX_HTTP_TO_HTTPS 497
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104
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162
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105 /* 498 is the canceled code for the requests with invalid host name */
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0
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106
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107 /*
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108 * HTTP does not define the code for the case when a client closed
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109 * the connection while we are processing its request so we introduce
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110 * own code to log such situation when a client has closed the connection
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111 * before we even try to send the HTTP header to it
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112 */
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113 #define NGX_HTTP_CLIENT_CLOSED_REQUEST 499
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114
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115
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116 #define NGX_HTTP_INTERNAL_SERVER_ERROR 500
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117 #define NGX_HTTP_NOT_IMPLEMENTED 501
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118 #define NGX_HTTP_BAD_GATEWAY 502
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119 #define NGX_HTTP_SERVICE_UNAVAILABLE 503
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120 #define NGX_HTTP_GATEWAY_TIME_OUT 504
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186
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121 #define NGX_HTTP_INSUFFICIENT_STORAGE 507
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0
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122
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123
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254
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124 #define NGX_HTTP_LOWLEVEL_BUFFERED 0xf0
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125 #define NGX_HTTP_WRITE_BUFFERED 0x10
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126 #define NGX_HTTP_GZIP_BUFFERED 0x20
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127 #define NGX_HTTP_SSI_BUFFERED 0x01
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296
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128 #define NGX_HTTP_SUB_BUFFERED 0x02
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129 #define NGX_HTTP_COPY_BUFFERED 0x04
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146
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130
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131
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0
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132 typedef enum {
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133 NGX_HTTP_INITING_REQUEST_STATE = 0,
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134 NGX_HTTP_READING_REQUEST_STATE,
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135 NGX_HTTP_PROCESS_REQUEST_STATE,
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136
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137 NGX_HTTP_CONNECT_UPSTREAM_STATE,
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138 NGX_HTTP_WRITING_UPSTREAM_STATE,
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139 NGX_HTTP_READING_UPSTREAM_STATE,
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140
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141 NGX_HTTP_WRITING_REQUEST_STATE,
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142 NGX_HTTP_LINGERING_CLOSE_STATE,
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143 NGX_HTTP_KEEPALIVE_STATE
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144 } ngx_http_state_e;
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145
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146
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147 typedef struct {
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50
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148 ngx_str_t name;
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149 ngx_uint_t offset;
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58
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150 ngx_http_header_handler_pt handler;
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0
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151 } ngx_http_header_t;
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152
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153
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154 typedef struct {
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58
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155 ngx_str_t name;
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156 ngx_uint_t offset;
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118
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157 } ngx_http_header_out_t;
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58
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158
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159
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160 typedef struct {
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50
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161 ngx_list_t headers;
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0
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162
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50
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163 ngx_table_elt_t *host;
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164 ngx_table_elt_t *connection;
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165 ngx_table_elt_t *if_modified_since;
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166 ngx_table_elt_t *user_agent;
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167 ngx_table_elt_t *referer;
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168 ngx_table_elt_t *content_length;
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169 ngx_table_elt_t *content_type;
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0
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170
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50
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171 ngx_table_elt_t *range;
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346
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172 ngx_table_elt_t *if_range;
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0
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173
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130
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174 ngx_table_elt_t *transfer_encoding;
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384
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175 ngx_table_elt_t *expect;
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130
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176
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0
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177 #if (NGX_HTTP_GZIP)
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50
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178 ngx_table_elt_t *accept_encoding;
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179 ngx_table_elt_t *via;
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0
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180 #endif
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181
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50
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182 ngx_table_elt_t *authorization;
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0
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183
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50
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184 ngx_table_elt_t *keep_alive;
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0
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185
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122
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186 #if (NGX_HTTP_PROXY || NGX_HTTP_REALIP)
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50
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187 ngx_table_elt_t *x_forwarded_for;
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0
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188 #endif
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189
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122
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190 #if (NGX_HTTP_REALIP)
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191 ngx_table_elt_t *x_real_ip;
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192 #endif
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193
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38
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194 #if (NGX_HTTP_HEADERS)
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50
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195 ngx_table_elt_t *accept;
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196 ngx_table_elt_t *accept_language;
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38
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197 #endif
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198
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186
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199 #if (NGX_HTTP_DAV)
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200 ngx_table_elt_t *depth;
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201 ngx_table_elt_t *destination;
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276
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202 ngx_table_elt_t *overwrite;
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230
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203 ngx_table_elt_t *date;
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186
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204 #endif
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205
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52
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206 ngx_str_t user;
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207 ngx_str_t passwd;
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208
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50
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209 ngx_array_t cookies;
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210
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376
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211 ngx_str_t server;
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212
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212 off_t content_length_n;
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50
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213 time_t keep_alive_n;
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0
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214
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50
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215 unsigned connection_type:2;
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216 unsigned msie:1;
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217 unsigned msie4:1;
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421
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218 unsigned msie6:1;
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50
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219 unsigned opera:1;
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220 unsigned gecko:1;
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221 unsigned konqueror:1;
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0
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222 } ngx_http_headers_in_t;
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223
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224
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225 typedef struct {
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50
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226 ngx_list_t headers;
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0
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227
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50
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228 ngx_uint_t status;
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229 ngx_str_t status_line;
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0
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230
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50
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231 ngx_table_elt_t *server;
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232 ngx_table_elt_t *date;
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233 ngx_table_elt_t *content_length;
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234 ngx_table_elt_t *content_encoding;
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235 ngx_table_elt_t *location;
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348
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236 ngx_table_elt_t *refresh;
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50
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237 ngx_table_elt_t *last_modified;
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238 ngx_table_elt_t *content_range;
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239 ngx_table_elt_t *accept_ranges;
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52
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240 ngx_table_elt_t *www_authenticate;
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50
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241 ngx_table_elt_t *expires;
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242 ngx_table_elt_t *etag;
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0
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243
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206
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244 ngx_str_t *override_charset;
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245
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246 size_t content_type_len;
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58
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247 ngx_str_t content_type;
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50
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248 ngx_str_t charset;
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392
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249 u_char *content_type_lowcase;
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250 ngx_uint_t content_type_hash;
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206
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251
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58
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252 ngx_array_t cache_control;
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253
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50
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254 off_t content_length_n;
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255 time_t date_time;
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256 time_t last_modified_time;
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0
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257 } ngx_http_headers_out_t;
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258
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259
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28
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260 typedef void (*ngx_http_client_body_handler_pt)(ngx_http_request_t *r);
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261
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0
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262 typedef struct {
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28
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263 ngx_temp_file_t *temp_file;
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264 ngx_chain_t *bufs;
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265 ngx_buf_t *buf;
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212
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266 off_t rest;
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182
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267 ngx_chain_t *to_write;
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28
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268 ngx_http_client_body_handler_pt post_handler;
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0
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269 } ngx_http_request_body_t;
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270
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271
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272 typedef struct {
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50
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273 ngx_http_request_t *request;
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0
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274
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50
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275 ngx_buf_t **busy;
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276 ngx_int_t nbusy;
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0
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277
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50
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278 ngx_buf_t **free;
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279 ngx_int_t nfree;
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0
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280
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50
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281 ngx_uint_t pipeline; /* unsigned pipeline:1; */
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0
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282 } ngx_http_connection_t;
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283
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284
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326
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285 typedef struct ngx_http_server_name_s ngx_http_server_name_t;
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286
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287
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288 typedef struct {
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289 ngx_hash_combined_t names;
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290
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291 ngx_uint_t nregex;
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292 ngx_http_server_name_t *regex;
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293 } ngx_http_virtual_names_t;
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142
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294
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295
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118
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296 typedef void (*ngx_http_cleanup_pt)(void *data);
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297
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298 typedef struct ngx_http_cleanup_s ngx_http_cleanup_t;
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299
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300 struct ngx_http_cleanup_s {
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142
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301 ngx_http_cleanup_pt handler;
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302 void *data;
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303 ngx_http_cleanup_t *next;
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118
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304 };
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305
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306
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248
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307 typedef ngx_int_t (*ngx_http_post_subrequest_pt)(ngx_http_request_t *r,
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308 void *data, ngx_int_t rc);
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309
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310 typedef struct {
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311 ngx_http_post_subrequest_pt handler;
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312 void *data;
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313 } ngx_http_post_subrequest_t;
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314
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315
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58
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316 typedef struct ngx_http_postponed_request_s ngx_http_postponed_request_t;
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317
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318 struct ngx_http_postponed_request_s {
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84
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319 ngx_http_request_t *request;
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320 ngx_chain_t *out;
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321 ngx_http_postponed_request_t *next;
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58
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322 };
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323
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324
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455
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325 typedef struct ngx_http_posted_request_s ngx_http_posted_request_t;
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326
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327 struct ngx_http_posted_request_s {
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328 ngx_http_request_t *request;
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329 ngx_http_posted_request_t *next;
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330 };
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331
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332
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0
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333 typedef ngx_int_t (*ngx_http_handler_pt)(ngx_http_request_t *r);
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58
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334 typedef void (*ngx_http_event_handler_pt)(ngx_http_request_t *r);
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335
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0
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336
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337 struct ngx_http_request_s {
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50
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338 uint32_t signature; /* "HTTP" */
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0
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339
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50
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340 ngx_connection_t *connection;
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0
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341
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50
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342 void **ctx;
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343 void **main_conf;
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344 void **srv_conf;
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345 void **loc_conf;
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0
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346
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58
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347 ngx_http_event_handler_pt read_event_handler;
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348 ngx_http_event_handler_pt write_event_handler;
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349
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50
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350 ngx_http_cache_t *cache;
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0
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351
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50
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352 ngx_http_upstream_t *upstream;
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296
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353 ngx_array_t *upstream_states;
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354 /* of ngx_http_upstream_state_t */
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28
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355
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50
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356 ngx_pool_t *pool;
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357 ngx_buf_t *header_in;
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0
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358
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50
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359 ngx_http_headers_in_t headers_in;
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360 ngx_http_headers_out_t headers_out;
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0
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361
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50
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362 ngx_http_request_body_t *request_body;
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0
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363
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50
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364 time_t lingering_time;
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298
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365 time_t start_sec;
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366 ngx_msec_t start_msec;
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0
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367
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50
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368 ngx_uint_t method;
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369 ngx_uint_t http_version;
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126
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370
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50
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371 ngx_str_t request_line;
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372 ngx_str_t uri;
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373 ngx_str_t args;
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374 ngx_str_t exten;
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375 ngx_str_t unparsed_uri;
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0
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376
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50
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377 ngx_str_t method_name;
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378 ngx_str_t http_protocol;
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126
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379
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58
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380 ngx_chain_t *out;
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50
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381 ngx_http_request_t *main;
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58
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382 ngx_http_request_t *parent;
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383 ngx_http_postponed_request_t *postponed;
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248
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384 ngx_http_post_subrequest_t *post_subrequest;
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455
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385 ngx_http_posted_request_t *posted_requests;
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0
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386
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50
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387 ngx_int_t phase_handler;
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388 ngx_http_handler_pt content_handler;
|
92
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389 ngx_uint_t access_code;
|
34
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390
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122
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391 ngx_http_variable_value_t *variables;
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50
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392
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76
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393 size_t limit_rate;
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|
394
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0
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395 /* used to learn the Apache compatible response length without a header */
|
50
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396 size_t header_size;
|
0
|
397
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212
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398 off_t request_length;
|
24
|
399
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50
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400 ngx_uint_t err_status;
|
0
|
401
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50
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402 ngx_http_connection_t *http_connection;
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0
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403
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58
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404 ngx_http_log_handler_pt log_handler;
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|
405
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118
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406 ngx_http_cleanup_t *cleanup;
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407
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50
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408 unsigned http_state:4;
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0
|
409
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2
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410 /* URI with "/." and on Win32 with "//" */
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50
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411 unsigned complex_uri:1;
|
34
|
412
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2
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413 /* URI with "%" */
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50
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414 unsigned quoted_uri:1;
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34
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415
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|
416 /* URI with "+" */
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50
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417 unsigned plus_in_uri:1;
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34
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418
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38
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419 /* URI with "\0" or "%00" */
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50
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420 unsigned zero_in_uri:1;
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38
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421
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60
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422 unsigned invalid_header:1;
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|
423
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58
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424 unsigned valid_location:1;
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54
|
425 unsigned valid_unparsed_uri:1;
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50
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426 unsigned uri_changed:1;
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|
427 unsigned uri_changes:4;
|
34
|
428
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182
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429 unsigned request_body_in_single_buf:1;
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|
430 unsigned request_body_in_file_only:1;
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|
431 unsigned request_body_in_persistent_file:1;
|
278
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432 unsigned request_body_in_clean_file:1;
|
182
|
433 unsigned request_body_file_group_access:1;
|
186
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434 unsigned request_body_file_log_level:3;
|
182
|
435
|
248
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436 unsigned subrequest_in_memory:1;
|
455
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437 unsigned waited:1;
|
146
|
438
|
358
|
439 unsigned gzip:2;
|
|
440
|
50
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441 unsigned proxy:1;
|
|
442 unsigned bypass_cache:1;
|
|
443 unsigned no_cache:1;
|
0
|
444
|
272
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445 /*
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445
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446 * instead of using the request context data in
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447
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447 * ngx_http_limit_zone_module and ngx_http_limit_req_module
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445
|
448 * we use the single bits in the request structure
|
272
|
449 */
|
|
450 unsigned limit_zone_set:1;
|
445
|
451 unsigned limit_req_set:1;
|
272
|
452
|
0
|
453 #if 0
|
340
|
454 unsigned cacheable:1;
|
0
|
455 #endif
|
58
|
456
|
50
|
457 unsigned pipeline:1;
|
|
458 unsigned plain_http:1;
|
|
459 unsigned chunked:1;
|
|
460 unsigned header_only:1;
|
238
|
461 unsigned zero_body:1;
|
50
|
462 unsigned keepalive:1;
|
|
463 unsigned lingering_close:1;
|
86
|
464 unsigned discard_body:1;
|
58
|
465 unsigned internal:1;
|
228
|
466 unsigned error_page:1;
|
178
|
467 unsigned post_action:1;
|
|
468 unsigned request_complete:1;
|
216
|
469 unsigned request_output:1;
|
|
470 unsigned header_sent:1;
|
384
|
471 unsigned expect_tested:1;
|
388
|
472 unsigned root_tested:1;
|
58
|
473 unsigned done:1;
|
440
|
474 unsigned logged:1;
|
72
|
475 unsigned utf8:1;
|
0
|
476
|
254
|
477 unsigned buffered:4;
|
|
478
|
62
|
479 unsigned main_filter_need_in_memory:1;
|
50
|
480 unsigned filter_need_in_memory:1;
|
|
481 unsigned filter_need_temporary:1;
|
130
|
482 unsigned allow_ranges:1;
|
0
|
483
|
|
484 #if (NGX_STAT_STUB)
|
50
|
485 unsigned stat_reading:1;
|
|
486 unsigned stat_writing:1;
|
0
|
487 #endif
|
|
488
|
206
|
489 unsigned subrequests:8;
|
|
490
|
0
|
491 /* used to parse HTTP headers */
|
248
|
492
|
50
|
493 ngx_uint_t state;
|
|
494 u_char *uri_start;
|
|
495 u_char *uri_end;
|
|
496 u_char *uri_ext;
|
|
497 u_char *args_start;
|
|
498 u_char *request_start;
|
|
499 u_char *request_end;
|
|
500 u_char *method_end;
|
|
501 u_char *schema_start;
|
|
502 u_char *schema_end;
|
|
503 u_char *host_start;
|
|
504 u_char *host_end;
|
|
505 u_char *port_start;
|
|
506 u_char *port_end;
|
|
507 u_char *header_name_start;
|
|
508 u_char *header_name_end;
|
|
509 u_char *header_start;
|
|
510 u_char *header_end;
|
198
|
511
|
248
|
512 unsigned http_minor:16;
|
|
513 unsigned http_major:16;
|
|
514
|
56
|
515 ngx_uint_t header_hash;
|
198
|
516 ngx_uint_t lowcase_index;
|
|
517 u_char lowcase_header[NGX_HTTP_LC_HEADER_LEN];
|
0
|
518 };
|
|
519
|
|
520
|
118
|
521 extern ngx_http_header_t ngx_http_headers_in[];
|
|
522 extern ngx_http_header_out_t ngx_http_headers_out[];
|
0
|
523
|
|
524
|
|
525 #endif /* _NGX_HTTP_REQUEST_H_INCLUDED_ */
|