|
28
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_
|
|
|
8 #define _NGX_HTTP_UPSTREAM_H_INCLUDED_
|
|
|
9
|
|
|
10
|
|
|
11 #include <ngx_config.h>
|
|
|
12 #include <ngx_core.h>
|
|
|
13 #include <ngx_event.h>
|
|
|
14 #include <ngx_event_connect.h>
|
|
|
15 #include <ngx_event_pipe.h>
|
|
|
16 #include <ngx_http.h>
|
|
|
17
|
|
|
18
|
|
|
19 #define NGX_HTTP_UPSTREAM_FT_ERROR 0x02
|
|
|
20 #define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x04
|
|
|
21 #define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x08
|
|
|
22 #define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x10
|
|
|
23 #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x20
|
|
|
24 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x40
|
|
|
25 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x80
|
|
|
26
|
|
|
27
|
|
|
28 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40
|
|
|
29
|
|
|
30
|
|
|
31 typedef struct {
|
|
112
|
32 ngx_msec_t bl_time;
|
|
58
|
33 ngx_uint_t bl_state;
|
|
28
|
34
|
|
58
|
35 ngx_uint_t status;
|
|
112
|
36 ngx_msec_t response_time;
|
|
|
37
|
|
58
|
38 ngx_str_t *peer;
|
|
28
|
39 } ngx_http_upstream_state_t;
|
|
|
40
|
|
|
41
|
|
|
42 typedef struct {
|
|
58
|
43 ngx_hash_t headers_in_hash;
|
|
|
44 } ngx_http_upstream_main_conf_t;
|
|
|
45
|
|
|
46
|
|
|
47 typedef struct {
|
|
|
48 ngx_msec_t connect_timeout;
|
|
|
49 ngx_msec_t send_timeout;
|
|
|
50 ngx_msec_t read_timeout;
|
|
76
|
51 ngx_msec_t timeout;
|
|
28
|
52
|
|
58
|
53 size_t send_lowat;
|
|
|
54 size_t header_buffer_size;
|
|
78
|
55
|
|
58
|
56 size_t busy_buffers_size;
|
|
|
57 size_t max_temp_file_size;
|
|
|
58 size_t temp_file_write_size;
|
|
|
59
|
|
78
|
60 size_t busy_buffers_size_conf;
|
|
|
61 size_t max_temp_file_size_conf;
|
|
|
62 size_t temp_file_write_size_conf;
|
|
|
63
|
|
58
|
64 ngx_uint_t next_upstream;
|
|
110
|
65 ngx_uint_t max_fails;
|
|
|
66
|
|
|
67 time_t fail_timeout;
|
|
28
|
68
|
|
58
|
69 ngx_bufs_t bufs;
|
|
28
|
70
|
|
58
|
71 ngx_flag_t pass_request_headers;
|
|
|
72 ngx_flag_t pass_request_body;
|
|
|
73
|
|
|
74 ngx_flag_t redirect_errors;
|
|
|
75 ngx_flag_t cyclic_temp_file;
|
|
28
|
76
|
|
58
|
77 ngx_flag_t pass_x_powered_by;
|
|
|
78 ngx_flag_t pass_server;
|
|
|
79 ngx_flag_t pass_date;
|
|
|
80 ngx_flag_t pass_x_accel_expires;
|
|
28
|
81
|
|
58
|
82 ngx_path_t *temp_path;
|
|
|
83
|
|
|
84 ngx_str_t schema;
|
|
|
85 ngx_str_t uri;
|
|
122
|
86 ngx_str_t location;
|
|
58
|
87 ngx_str_t url; /* used in proxy_rewrite_location */
|
|
126
|
88
|
|
|
89 #if (NGX_HTTP_SSL)
|
|
|
90 ngx_ssl_t *ssl;
|
|
|
91 #endif
|
|
|
92
|
|
28
|
93 } ngx_http_upstream_conf_t;
|
|
|
94
|
|
|
95
|
|
58
|
96 typedef struct {
|
|
|
97 ngx_str_t name;
|
|
|
98 ngx_http_header_handler_pt handler;
|
|
|
99 ngx_uint_t offset;
|
|
|
100 ngx_http_header_handler_pt copy_handler;
|
|
|
101 ngx_uint_t conf;
|
|
64
|
102 ngx_uint_t redirect; /* unsigned redirect:1; */
|
|
58
|
103 } ngx_http_upstream_header_t;
|
|
|
104
|
|
|
105
|
|
|
106 typedef struct {
|
|
|
107 ngx_list_t headers;
|
|
|
108
|
|
78
|
109 ngx_uint_t status_n;
|
|
|
110 ngx_str_t status_line;
|
|
|
111
|
|
58
|
112 ngx_table_elt_t *status;
|
|
|
113 ngx_table_elt_t *date;
|
|
|
114 ngx_table_elt_t *server;
|
|
|
115 ngx_table_elt_t *connection;
|
|
|
116
|
|
|
117 ngx_table_elt_t *expires;
|
|
|
118 ngx_table_elt_t *etag;
|
|
|
119 ngx_table_elt_t *x_accel_expires;
|
|
64
|
120 ngx_table_elt_t *x_accel_redirect;
|
|
76
|
121 ngx_table_elt_t *x_accel_limit_rate;
|
|
58
|
122
|
|
|
123 ngx_table_elt_t *content_type;
|
|
|
124 ngx_table_elt_t *content_length;
|
|
|
125
|
|
|
126 ngx_table_elt_t *last_modified;
|
|
|
127 ngx_table_elt_t *location;
|
|
|
128 ngx_table_elt_t *accept_ranges;
|
|
78
|
129 ngx_table_elt_t *www_authenticate;
|
|
58
|
130
|
|
|
131 #if (NGX_HTTP_GZIP)
|
|
|
132 ngx_table_elt_t *content_encoding;
|
|
|
133 #endif
|
|
|
134
|
|
|
135 ngx_array_t cache_control;
|
|
|
136 } ngx_http_upstream_headers_in_t;
|
|
|
137
|
|
28
|
138
|
|
|
139 struct ngx_http_upstream_s {
|
|
58
|
140 ngx_peer_connection_t peer;
|
|
28
|
141
|
|
58
|
142 ngx_event_pipe_t pipe;
|
|
28
|
143
|
|
58
|
144 ngx_chain_t *request_bufs;
|
|
28
|
145
|
|
58
|
146 ngx_output_chain_ctx_t output;
|
|
|
147 ngx_chain_writer_ctx_t writer;
|
|
28
|
148
|
|
58
|
149 ngx_http_upstream_conf_t *conf;
|
|
28
|
150
|
|
58
|
151 ngx_http_upstream_headers_in_t headers_in;
|
|
|
152
|
|
|
153 ngx_buf_t header_in;
|
|
28
|
154
|
|
58
|
155 ngx_int_t (*create_request)(ngx_http_request_t *r);
|
|
|
156 ngx_int_t (*reinit_request)(ngx_http_request_t *r);
|
|
|
157 ngx_int_t (*process_header)(ngx_http_request_t *r);
|
|
|
158 void (*abort_request)(ngx_http_request_t *r);
|
|
|
159 void (*finalize_request)(ngx_http_request_t *r,
|
|
|
160 ngx_int_t rc);
|
|
|
161 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r,
|
|
|
162 ngx_table_elt_t *h, size_t prefix);
|
|
28
|
163
|
|
76
|
164 ngx_msec_t timeout;
|
|
|
165
|
|
110
|
166 ngx_str_t method;
|
|
28
|
167
|
|
58
|
168 ngx_http_log_handler_pt saved_log_handler;
|
|
|
169
|
|
|
170 ngx_http_upstream_state_t *state;
|
|
|
171 ngx_array_t states; /* of ngx_http_upstream_state_t */
|
|
28
|
172
|
|
104
|
173 ngx_str_t uri;
|
|
|
174
|
|
118
|
175 ngx_http_cleanup_pt *cleanup;
|
|
|
176
|
|
58
|
177 unsigned cachable:1;
|
|
|
178 unsigned accel:1;
|
|
28
|
179
|
|
58
|
180 unsigned request_sent:1;
|
|
|
181 unsigned header_sent:1;
|
|
28
|
182 };
|
|
|
183
|
|
|
184
|
|
|
185 void ngx_http_upstream_init(ngx_http_request_t *r);
|
|
58
|
186
|
|
28
|
187
|
|
58
|
188 extern ngx_module_t ngx_http_upstream_module;
|
|
28
|
189
|
|
|
190 extern char *ngx_http_upstream_header_errors[];
|
|
|
191
|
|
|
192
|
|
|
193 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */
|
