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annotate src/http/ngx_http_upstream.h @ 2754:7d16774c757c

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style fix
author Igor Sysoev <igor@sysoev.ru>
date Fri, 24 Apr 2009 19:58:19 +0000
parents 3a8a53c0c42f
children 4e002555652d
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c52408583801 nginx-0.1.14-RELEASE import
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_
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8 #define _NGX_HTTP_UPSTREAM_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_event.h>
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14 #include <ngx_event_connect.h>
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15 #include <ngx_event_pipe.h>
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16 #include <ngx_http.h>
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19 #define NGX_HTTP_UPSTREAM_FT_ERROR 0x00000002
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20 #define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x00000004
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21 #define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x00000008
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22 #define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x00000010
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23 #define NGX_HTTP_UPSTREAM_FT_HTTP_502 0x00000020
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24 #define NGX_HTTP_UPSTREAM_FT_HTTP_503 0x00000040
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25 #define NGX_HTTP_UPSTREAM_FT_HTTP_504 0x00000080
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26 #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000100
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27 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000200
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28 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000400
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29 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000
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30 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000
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32 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \
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33 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \
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34 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \
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35 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_404)
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38 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40
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41 typedef struct {
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42 ngx_msec_t bl_time;
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43 ngx_uint_t bl_state;
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45 ngx_uint_t status;
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46 time_t response_sec;
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47 ngx_uint_t response_msec;
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48 off_t response_length;
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49
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50 ngx_str_t *peer;
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51 } ngx_http_upstream_state_t;
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54 typedef struct {
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55 ngx_hash_t headers_in_hash;
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56 ngx_array_t upstreams;
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57 /* ngx_http_upstream_srv_conf_t */
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58 } ngx_http_upstream_main_conf_t;
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59
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60 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t;
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61
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62 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf,
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63 ngx_http_upstream_srv_conf_t *us);
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64 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r,
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65 ngx_http_upstream_srv_conf_t *us);
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68 typedef struct {
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69 ngx_http_upstream_init_pt init_upstream;
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70 ngx_http_upstream_init_peer_pt init;
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71 void *data;
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72 } ngx_http_upstream_peer_t;
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75 typedef struct {
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76 ngx_peer_addr_t *addrs;
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77 ngx_uint_t naddrs;
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78 ngx_uint_t weight;
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79 ngx_uint_t max_fails;
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80 time_t fail_timeout;
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81
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82 unsigned down:1;
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83 unsigned backup:1;
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84 } ngx_http_upstream_server_t;
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87 #define NGX_HTTP_UPSTREAM_CREATE 0x0001
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88 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002
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89 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004
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90 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008
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91 #define NGX_HTTP_UPSTREAM_DOWN 0x0010
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92 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020
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95 struct ngx_http_upstream_srv_conf_s {
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96 ngx_http_upstream_peer_t peer;
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97 void **srv_conf;
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98
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99 ngx_array_t *servers; /* ngx_http_upstream_server_t */
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100
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101 ngx_uint_t flags;
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102 ngx_str_t host;
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103 u_char *file_name;
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104 ngx_uint_t line;
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105 in_port_t port;
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106 in_port_t default_port;
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107 };
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110 typedef struct {
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111 ngx_http_upstream_srv_conf_t *upstream;
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112
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113 ngx_msec_t connect_timeout;
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114 ngx_msec_t send_timeout;
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115 ngx_msec_t read_timeout;
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116 ngx_msec_t timeout;
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117
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118 size_t send_lowat;
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119 size_t buffer_size;
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120
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121 size_t busy_buffers_size;
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122 size_t max_temp_file_size;
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123 size_t temp_file_write_size;
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124
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125 size_t busy_buffers_size_conf;
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126 size_t max_temp_file_size_conf;
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127 size_t temp_file_write_size_conf;
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128
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129 ngx_bufs_t bufs;
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130
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131 ngx_uint_t next_upstream;
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132 ngx_uint_t store_access;
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133 ngx_flag_t buffering;
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134 ngx_flag_t pass_request_headers;
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135 ngx_flag_t pass_request_body;
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136
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137 ngx_flag_t ignore_client_abort;
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138 ngx_flag_t intercept_errors;
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139 ngx_flag_t cyclic_temp_file;
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diff changeset
140
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diff changeset
141 ngx_path_t *temp_path;
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diff changeset
142
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143 ngx_hash_t hide_headers_hash;
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diff changeset
144 ngx_array_t *hide_headers;
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diff changeset
145 ngx_array_t *pass_headers;
509
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diff changeset
146
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147 #if (NGX_HTTP_CACHE)
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148 ngx_shm_zone_t *cache;
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diff changeset
149
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150 ngx_uint_t cache_min_uses;
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diff changeset
151 ngx_uint_t cache_use_stale;
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152
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153 ngx_array_t *cache_valid;
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diff changeset
154 #endif
509
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diff changeset
155
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diff changeset
156 ngx_array_t *store_lengths;
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diff changeset
157 ngx_array_t *store_values;
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diff changeset
158
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diff changeset
159 signed store:2;
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diff changeset
160 unsigned intercept_404:1;
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diff changeset
161 unsigned change_buffering:1;
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diff changeset
162
577
4d9ea73a627a nginx-0.3.10-RELEASE import
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parents: 573
diff changeset
163 #if (NGX_HTTP_SSL)
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164 ngx_ssl_t *ssl;
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diff changeset
165 ngx_flag_t ssl_session_reuse;
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166 #endif
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167
479
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168 } ngx_http_upstream_conf_t;
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169
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170
509
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171 typedef struct {
2592
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172 ngx_str_t name;
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173 ngx_http_header_handler_pt handler;
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174 ngx_uint_t offset;
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175 ngx_http_header_handler_pt copy_handler;
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diff changeset
176 ngx_uint_t conf;
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177 ngx_uint_t redirect; /* unsigned redirect:1; */
509
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178 } ngx_http_upstream_header_t;
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179
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diff changeset
180
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diff changeset
181 typedef struct {
2592
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182 ngx_list_t headers;
509
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diff changeset
183
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184 ngx_uint_t status_n;
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diff changeset
185 ngx_str_t status_line;
529
e5d7d0334fdb nginx-0.1.39-RELEASE import
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parents: 527
diff changeset
186
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187 ngx_table_elt_t *status;
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188 ngx_table_elt_t *date;
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diff changeset
189 ngx_table_elt_t *server;
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diff changeset
190 ngx_table_elt_t *connection;
509
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diff changeset
191
2592
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192 ngx_table_elt_t *expires;
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diff changeset
193 ngx_table_elt_t *etag;
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diff changeset
194 ngx_table_elt_t *x_accel_expires;
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195 ngx_table_elt_t *x_accel_redirect;
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diff changeset
196 ngx_table_elt_t *x_accel_limit_rate;
509
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parents: 507
diff changeset
197
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198 ngx_table_elt_t *content_type;
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diff changeset
199 ngx_table_elt_t *content_length;
509
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parents: 507
diff changeset
200
2592
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diff changeset
201 ngx_table_elt_t *last_modified;
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diff changeset
202 ngx_table_elt_t *location;
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parents: 2422
diff changeset
203 ngx_table_elt_t *accept_ranges;
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diff changeset
204 ngx_table_elt_t *www_authenticate;
509
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205
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diff changeset
206 #if (NGX_HTTP_GZIP)
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207 ngx_table_elt_t *content_encoding;
509
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diff changeset
208 #endif
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diff changeset
209
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diff changeset
210 off_t content_length_n;
1885
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parents: 1701
diff changeset
211
2592
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diff changeset
212 ngx_array_t cache_control;
509
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diff changeset
213 } ngx_http_upstream_headers_in_t;
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diff changeset
214
479
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215
1658
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diff changeset
216 typedef struct {
2592
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diff changeset
217 ngx_str_t host;
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diff changeset
218 in_port_t port;
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diff changeset
219 ngx_uint_t no_port; /* unsigned no_port:1 */
2422
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parents: 2402
diff changeset
220
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diff changeset
221 ngx_uint_t naddrs;
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diff changeset
222 in_addr_t *addrs;
2422
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parents: 2402
diff changeset
223
2592
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diff changeset
224 struct sockaddr *sockaddr;
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diff changeset
225 socklen_t socklen;
2422
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parents: 2402
diff changeset
226
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diff changeset
227 ngx_resolver_ctx_t *ctx;
1658
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Igor Sysoev <igor@sysoev.ru>
parents: 1565
diff changeset
228 } ngx_http_upstream_resolved_t;
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diff changeset
229
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parents: 1565
diff changeset
230
2386
4ccaa42de633 use already available r and u instead of ev
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parents: 2377
diff changeset
231 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r,
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parents: 2377
diff changeset
232 ngx_http_upstream_t *u);
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diff changeset
233
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parents: 2377
diff changeset
234
479
c52408583801 nginx-0.1.14-RELEASE import
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diff changeset
235 struct ngx_http_upstream_s {
2592
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diff changeset
236 ngx_http_upstream_handler_pt read_event_handler;
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parents: 2422
diff changeset
237 ngx_http_upstream_handler_pt write_event_handler;
2377
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Igor Sysoev <igor@sysoev.ru>
parents: 2285
diff changeset
238
2592
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diff changeset
239 ngx_peer_connection_t peer;
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
240
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diff changeset
241 ngx_event_pipe_t *pipe;
479
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parents:
diff changeset
242
2592
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diff changeset
243 ngx_chain_t *request_bufs;
479
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parents:
diff changeset
244
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diff changeset
245 ngx_output_chain_ctx_t output;
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parents: 2422
diff changeset
246 ngx_chain_writer_ctx_t writer;
479
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parents:
diff changeset
247
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diff changeset
248 ngx_http_upstream_conf_t *conf;
479
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diff changeset
249
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diff changeset
250 ngx_http_upstream_headers_in_t headers_in;
509
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parents: 507
diff changeset
251
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diff changeset
252 ngx_http_upstream_resolved_t *resolved;
1658
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diff changeset
253
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diff changeset
254 ngx_buf_t buffer;
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parents: 2422
diff changeset
255 size_t length;
581
326634fb9d47 nginx-0.3.12-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
256
2592
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diff changeset
257 ngx_chain_t *out_bufs;
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diff changeset
258 ngx_chain_t *busy_bufs;
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diff changeset
259 ngx_chain_t *free_bufs;
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parents: 577
diff changeset
260
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diff changeset
261 ngx_int_t (*input_filter_init)(void *data);
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parents: 2422
diff changeset
262 ngx_int_t (*input_filter)(void *data, ssize_t bytes);
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parents: 2422
diff changeset
263 void *input_filter_ctx;
479
c52408583801 nginx-0.1.14-RELEASE import
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parents:
diff changeset
264
2592
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diff changeset
265 #if (NGX_HTTP_CACHE)
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diff changeset
266 ngx_int_t (*create_key)(ngx_http_request_t *r);
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parents: 2422
diff changeset
267 #endif
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diff changeset
268 ngx_int_t (*create_request)(ngx_http_request_t *r);
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parents: 2422
diff changeset
269 ngx_int_t (*reinit_request)(ngx_http_request_t *r);
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parents: 2422
diff changeset
270 ngx_int_t (*process_header)(ngx_http_request_t *r);
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parents: 2422
diff changeset
271 void (*abort_request)(ngx_http_request_t *r);
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parents: 2422
diff changeset
272 void (*finalize_request)(ngx_http_request_t *r,
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parents: 2422
diff changeset
273 ngx_int_t rc);
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
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274 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r,
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275 ngx_table_elt_t *h, size_t prefix);
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276
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277 ngx_msec_t timeout;
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278
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279 ngx_http_upstream_state_t *state;
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280
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281 ngx_str_t method;
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282 ngx_str_t schema;
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283 ngx_str_t uri;
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284
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285 ngx_http_cleanup_pt *cleanup;
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286
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287 unsigned store:1;
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288 unsigned cacheable:1;
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289 unsigned accel:1;
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290 unsigned ssl:1;
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291 #if (NGX_HTTP_CACHE)
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292 unsigned stale_cache:1;
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293 #endif
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294
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295 unsigned buffering:1;
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296
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297 unsigned request_sent:1;
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298 unsigned header_sent:1;
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299 };
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300
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301
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302 typedef struct {
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303 ngx_uint_t status;
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304 ngx_uint_t mask;
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305 } ngx_http_upstream_next_t;
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306
33556140681a *) ngx_http_upstream_test_next()
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307
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308 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r,
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309 ngx_http_variable_value_t *v, uintptr_t data);
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310
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311 void ngx_http_upstream_init(ngx_http_request_t *r);
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312 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf,
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313 ngx_url_t *u, ngx_uint_t flags);
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314 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
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315 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
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316 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash);
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317
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318
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319 #define ngx_http_conf_upstream_srv_conf(uscf, module) \
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320 uscf->srv_conf[module.ctx_index]
509
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321
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322
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323 extern ngx_module_t ngx_http_upstream_module;
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324
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325
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326 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */