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annotate src/http/ngx_http_upstream.h @ 3264:ebcee0063cd8

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style fix
author Igor Sysoev <igor@sysoev.ru>
date Mon, 02 Nov 2009 12:41:56 +0000
parents 95972b9e790b
children f0d596e84634
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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_UPDATING 0x00000200
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28 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000400
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29 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000800
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30 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000
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31 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000
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33 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \
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34 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \
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35 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \
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37 |NGX_HTTP_UPSTREAM_FT_HTTP_404)
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39 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40
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41
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42 #define NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT 0x00000002
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43 #define NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES 0x00000004
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44 #define NGX_HTTP_UPSTREAM_IGN_EXPIRES 0x00000008
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45 #define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL 0x00000010
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47
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48 typedef struct {
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49 ngx_msec_t bl_time;
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50 ngx_uint_t bl_state;
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51
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52 ngx_uint_t status;
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53 time_t response_sec;
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54 ngx_uint_t response_msec;
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55 off_t response_length;
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56
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57 ngx_str_t *peer;
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58 } ngx_http_upstream_state_t;
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61 typedef struct {
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62 ngx_hash_t headers_in_hash;
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63 ngx_array_t upstreams;
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64 /* ngx_http_upstream_srv_conf_t */
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65 } ngx_http_upstream_main_conf_t;
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66
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67 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t;
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68
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69 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf,
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70 ngx_http_upstream_srv_conf_t *us);
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71 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r,
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72 ngx_http_upstream_srv_conf_t *us);
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75 typedef struct {
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76 ngx_http_upstream_init_pt init_upstream;
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77 ngx_http_upstream_init_peer_pt init;
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78 void *data;
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79 } ngx_http_upstream_peer_t;
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82 typedef struct {
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83 ngx_peer_addr_t *addrs;
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84 ngx_uint_t naddrs;
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85 ngx_uint_t weight;
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86 ngx_uint_t max_fails;
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87 time_t fail_timeout;
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88
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89 unsigned down:1;
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90 unsigned backup:1;
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91 } ngx_http_upstream_server_t;
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94 #define NGX_HTTP_UPSTREAM_CREATE 0x0001
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95 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002
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96 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004
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97 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008
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98 #define NGX_HTTP_UPSTREAM_DOWN 0x0010
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99 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020
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102 struct ngx_http_upstream_srv_conf_s {
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103 ngx_http_upstream_peer_t peer;
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104 void **srv_conf;
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106 ngx_array_t *servers; /* ngx_http_upstream_server_t */
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107
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108 ngx_uint_t flags;
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109 ngx_str_t host;
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110 u_char *file_name;
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111 ngx_uint_t line;
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112 in_port_t port;
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113 in_port_t default_port;
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114 };
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116
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117 typedef struct {
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118 ngx_http_upstream_srv_conf_t *upstream;
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119
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120 ngx_msec_t connect_timeout;
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121 ngx_msec_t send_timeout;
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122 ngx_msec_t read_timeout;
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123 ngx_msec_t timeout;
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124
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125 size_t send_lowat;
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126 size_t buffer_size;
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127
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128 size_t busy_buffers_size;
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129 size_t max_temp_file_size;
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130 size_t temp_file_write_size;
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131
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132 size_t busy_buffers_size_conf;
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133 size_t max_temp_file_size_conf;
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134 size_t temp_file_write_size_conf;
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135
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136 ngx_bufs_t bufs;
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e5d7d0334fdb nginx-0.1.39-RELEASE import
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parents: 527
diff changeset
137
2786
4e002555652d proxy_ignore_headers and fastcgi_ignore_headers
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parents: 2754
diff changeset
138 ngx_uint_t ignore_headers;
2592
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diff changeset
139 ngx_uint_t next_upstream;
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parents: 2422
diff changeset
140 ngx_uint_t store_access;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
141 ngx_flag_t buffering;
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parents: 2422
diff changeset
142 ngx_flag_t pass_request_headers;
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parents: 2422
diff changeset
143 ngx_flag_t pass_request_body;
479
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parents:
diff changeset
144
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diff changeset
145 ngx_flag_t ignore_client_abort;
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parents: 2422
diff changeset
146 ngx_flag_t intercept_errors;
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parents: 2422
diff changeset
147 ngx_flag_t cyclic_temp_file;
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parents: 2422
diff changeset
148
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diff changeset
149 ngx_path_t *temp_path;
479
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parents:
diff changeset
150
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diff changeset
151 ngx_hash_t hide_headers_hash;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
152 ngx_array_t *hide_headers;
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parents: 2422
diff changeset
153 ngx_array_t *pass_headers;
509
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parents: 507
diff changeset
154
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diff changeset
155 #if (NGX_HTTP_CACHE)
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diff changeset
156 ngx_shm_zone_t *cache;
479
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parents:
diff changeset
157
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diff changeset
158 ngx_uint_t cache_min_uses;
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parents: 2422
diff changeset
159 ngx_uint_t cache_use_stale;
2875
6e1941b321b7 proxy_cache_methods and fastcgi_cache_methods
Igor Sysoev <igor@sysoev.ru>
parents: 2786
diff changeset
160 ngx_uint_t cache_methods;
479
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parents:
diff changeset
161
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diff changeset
162 ngx_array_t *cache_valid;
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parents: 2422
diff changeset
163 #endif
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 507
diff changeset
164
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diff changeset
165 ngx_array_t *store_lengths;
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parents: 2422
diff changeset
166 ngx_array_t *store_values;
1295
5383f5232364 proxy_store and fastcgi_store were changed,
Igor Sysoev <igor@sysoev.ru>
parents: 1291
diff changeset
167
2592
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diff changeset
168 signed store:2;
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parents: 2422
diff changeset
169 unsigned intercept_404:1;
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parents: 2422
diff changeset
170 unsigned change_buffering:1;
581
326634fb9d47 nginx-0.3.12-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
171
577
4d9ea73a627a nginx-0.3.10-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 573
diff changeset
172 #if (NGX_HTTP_SSL)
2592
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diff changeset
173 ngx_ssl_t *ssl;
2754
7d16774c757c style fix
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parents: 2592
diff changeset
174 ngx_flag_t ssl_session_reuse;
577
4d9ea73a627a nginx-0.3.10-RELEASE import
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parents: 573
diff changeset
175 #endif
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parents: 573
diff changeset
176
479
c52408583801 nginx-0.1.14-RELEASE import
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177 } ngx_http_upstream_conf_t;
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178
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parents:
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179
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 507
diff changeset
180 typedef struct {
2592
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diff changeset
181 ngx_str_t name;
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diff changeset
182 ngx_http_header_handler_pt handler;
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parents: 2422
diff changeset
183 ngx_uint_t offset;
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parents: 2422
diff changeset
184 ngx_http_header_handler_pt copy_handler;
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parents: 2422
diff changeset
185 ngx_uint_t conf;
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parents: 2422
diff changeset
186 ngx_uint_t redirect; /* unsigned redirect:1; */
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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diff changeset
187 } ngx_http_upstream_header_t;
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diff changeset
188
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parents: 507
diff changeset
189
9b8c906f6e63 nginx-0.1.29-RELEASE import
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diff changeset
190 typedef struct {
2592
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parents: 2422
diff changeset
191 ngx_list_t headers;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
192
2592
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diff changeset
193 ngx_uint_t status_n;
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parents: 2422
diff changeset
194 ngx_str_t status_line;
529
e5d7d0334fdb nginx-0.1.39-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 527
diff changeset
195
2592
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diff changeset
196 ngx_table_elt_t *status;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
197 ngx_table_elt_t *date;
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parents: 2422
diff changeset
198 ngx_table_elt_t *server;
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parents: 2422
diff changeset
199 ngx_table_elt_t *connection;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
200
2592
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diff changeset
201 ngx_table_elt_t *expires;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
202 ngx_table_elt_t *etag;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
203 ngx_table_elt_t *x_accel_expires;
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parents: 2422
diff changeset
204 ngx_table_elt_t *x_accel_redirect;
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parents: 2422
diff changeset
205 ngx_table_elt_t *x_accel_limit_rate;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
206
2592
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diff changeset
207 ngx_table_elt_t *content_type;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
208 ngx_table_elt_t *content_length;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
209
2592
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diff changeset
210 ngx_table_elt_t *last_modified;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
211 ngx_table_elt_t *location;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
212 ngx_table_elt_t *accept_ranges;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
213 ngx_table_elt_t *www_authenticate;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
214
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
215 #if (NGX_HTTP_GZIP)
2592
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diff changeset
216 ngx_table_elt_t *content_encoding;
509
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parents: 507
diff changeset
217 #endif
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parents: 507
diff changeset
218
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diff changeset
219 off_t content_length_n;
1885
e5897822515f test response length in proxy/fastcgi_store
Igor Sysoev <igor@sysoev.ru>
parents: 1701
diff changeset
220
2592
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diff changeset
221 ngx_array_t cache_control;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
222 } ngx_http_upstream_headers_in_t;
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diff changeset
223
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
224
1658
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parents: 1565
diff changeset
225 typedef struct {
2592
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diff changeset
226 ngx_str_t host;
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parents: 2422
diff changeset
227 in_port_t port;
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parents: 2422
diff changeset
228 ngx_uint_t no_port; /* unsigned no_port:1 */
2422
7af1e5fe102c variable support for unix sockets in fastcgi_pass and proxy_pass
Igor Sysoev <igor@sysoev.ru>
parents: 2402
diff changeset
229
2592
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diff changeset
230 ngx_uint_t naddrs;
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
231 in_addr_t *addrs;
2422
7af1e5fe102c variable support for unix sockets in fastcgi_pass and proxy_pass
Igor Sysoev <igor@sysoev.ru>
parents: 2402
diff changeset
232
2592
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Igor Sysoev <igor@sysoev.ru>
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diff changeset
233 struct sockaddr *sockaddr;
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
234 socklen_t socklen;
2422
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Igor Sysoev <igor@sysoev.ru>
parents: 2402
diff changeset
235
2592
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Igor Sysoev <igor@sysoev.ru>
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diff changeset
236 ngx_resolver_ctx_t *ctx;
1658
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Igor Sysoev <igor@sysoev.ru>
parents: 1565
diff changeset
237 } ngx_http_upstream_resolved_t;
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Igor Sysoev <igor@sysoev.ru>
parents: 1565
diff changeset
238
13f8dec720b5 proxy_pass variables support
Igor Sysoev <igor@sysoev.ru>
parents: 1565
diff changeset
239
2386
4ccaa42de633 use already available r and u instead of ev
Igor Sysoev <igor@sysoev.ru>
parents: 2377
diff changeset
240 typedef void (*ngx_http_upstream_handler_pt)(ngx_http_request_t *r,
4ccaa42de633 use already available r and u instead of ev
Igor Sysoev <igor@sysoev.ru>
parents: 2377
diff changeset
241 ngx_http_upstream_t *u);
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Igor Sysoev <igor@sysoev.ru>
parents: 2377
diff changeset
242
4ccaa42de633 use already available r and u instead of ev
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parents: 2377
diff changeset
243
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
244 struct ngx_http_upstream_s {
2592
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parents: 2422
diff changeset
245 ngx_http_upstream_handler_pt read_event_handler;
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
246 ngx_http_upstream_handler_pt write_event_handler;
2377
87b8c44906b5 *) refactor subrequest handling, now they run as separate posted requests
Igor Sysoev <igor@sysoev.ru>
parents: 2285
diff changeset
247
2592
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diff changeset
248 ngx_peer_connection_t peer;
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
249
2592
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diff changeset
250 ngx_event_pipe_t *pipe;
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
251
2592
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diff changeset
252 ngx_chain_t *request_bufs;
479
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parents:
diff changeset
253
2592
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diff changeset
254 ngx_output_chain_ctx_t output;
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
255 ngx_chain_writer_ctx_t writer;
479
c52408583801 nginx-0.1.14-RELEASE import
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parents:
diff changeset
256
2592
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diff changeset
257 ngx_http_upstream_conf_t *conf;
479
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parents:
diff changeset
258
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diff changeset
259 ngx_http_upstream_headers_in_t headers_in;
509
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parents: 507
diff changeset
260
2592
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diff changeset
261 ngx_http_upstream_resolved_t *resolved;
1658
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parents: 1565
diff changeset
262
2592
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diff changeset
263 ngx_buf_t buffer;
3a8a53c0c42f a prelimiary proxy cache support
Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
264 size_t length;
581
326634fb9d47 nginx-0.3.12-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 577
diff changeset
265
2592
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diff changeset
266 ngx_chain_t *out_bufs;
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parents: 2422
diff changeset
267 ngx_chain_t *busy_bufs;
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parents: 2422
diff changeset
268 ngx_chain_t *free_bufs;
581
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parents: 577
diff changeset
269
2592
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diff changeset
270 ngx_int_t (*input_filter_init)(void *data);
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parents: 2422
diff changeset
271 ngx_int_t (*input_filter)(void *data, ssize_t bytes);
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Igor Sysoev <igor@sysoev.ru>
parents: 2422
diff changeset
272 void *input_filter_ctx;
479
c52408583801 nginx-0.1.14-RELEASE import
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parents:
diff changeset
273
2592
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diff changeset
274 #if (NGX_HTTP_CACHE)
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275 ngx_int_t (*create_key)(ngx_http_request_t *r);
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276 #endif
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277 ngx_int_t (*create_request)(ngx_http_request_t *r);
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278 ngx_int_t (*reinit_request)(ngx_http_request_t *r);
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279 ngx_int_t (*process_header)(ngx_http_request_t *r);
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280 void (*abort_request)(ngx_http_request_t *r);
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281 void (*finalize_request)(ngx_http_request_t *r,
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282 ngx_int_t rc);
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283 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r,
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284 ngx_table_elt_t *h, size_t prefix);
479
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285
2592
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286 ngx_msec_t timeout;
527
7fa11e5c6e96 nginx-0.1.38-RELEASE import
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287
2592
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288 ngx_http_upstream_state_t *state;
479
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289
2592
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290 ngx_str_t method;
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291 ngx_str_t schema;
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292 ngx_str_t uri;
555
7bd37aef1e7e nginx-0.2.6-RELEASE import
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293
2592
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294 ngx_http_cleanup_pt *cleanup;
569
174f1e853e1e nginx-0.3.6-RELEASE import
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295
2592
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296 unsigned store:1;
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297 unsigned cacheable:1;
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298 unsigned accel:1;
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299 unsigned ssl:1;
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300 #if (NGX_HTTP_CACHE)
2952
0998606fbfd4 $upstream_cache_status
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301 unsigned cache_status:3;
2592
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302 #endif
479
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303
2592
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304 unsigned buffering:1;
649
1e720b0be7ec nginx-0.3.46-RELEASE import
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305
2592
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306 unsigned request_sent:1;
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307 unsigned header_sent:1;
479
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308 };
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309
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310
2268
33556140681a *) ngx_http_upstream_test_next()
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311 typedef struct {
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312 ngx_uint_t status;
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313 ngx_uint_t mask;
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314 } ngx_http_upstream_next_t;
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315
33556140681a *) ngx_http_upstream_test_next()
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316
1162
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317 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r,
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318 ngx_http_variable_value_t *v, uintptr_t data);
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319
3006
95972b9e790b ngx_http_upstream_create() to cleanup the previous upstream after
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320 ngx_int_t ngx_http_upstream_create(ngx_http_request_t *r);
479
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321 void ngx_http_upstream_init(ngx_http_request_t *r);
651
39b7d7b33c91 nginx-0.3.47-RELEASE import
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322 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf,
884
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diff changeset
323 ngx_url_t *u, ngx_uint_t flags);
1701
40d004d95d88 *) now ngx_conf_set_str_array_slot() tests NGX_CONF_UNSET_PTR
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324 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
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325 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
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326 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash);
884
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diff changeset
327
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diff changeset
328
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329 #define ngx_http_conf_upstream_srv_conf(uscf, module) \
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330 uscf->srv_conf[module.ctx_index]
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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parents: 507
diff changeset
331
479
c52408583801 nginx-0.1.14-RELEASE import
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332
2875
6e1941b321b7 proxy_cache_methods and fastcgi_cache_methods
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333 extern ngx_module_t ngx_http_upstream_module;
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334 extern ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[];
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diff changeset
335
479
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336
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337 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */