479
|
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 {
|
509
|
32 time_t bl_time;
|
|
33 ngx_uint_t bl_state;
|
479
|
34
|
509
|
35 ngx_uint_t status;
|
|
36 time_t time;
|
479
|
37
|
509
|
38 ngx_str_t *peer;
|
479
|
39 } ngx_http_upstream_state_t;
|
|
40
|
|
41
|
|
42 typedef struct {
|
509
|
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;
|
479
|
51
|
509
|
52 size_t send_lowat;
|
|
53 size_t header_buffer_size;
|
|
54 size_t busy_buffers_size;
|
|
55 size_t max_temp_file_size;
|
|
56 size_t temp_file_write_size;
|
|
57
|
|
58 ngx_uint_t next_upstream;
|
|
59 ngx_uint_t method;
|
479
|
60
|
509
|
61 ngx_bufs_t bufs;
|
479
|
62
|
509
|
63 ngx_flag_t pass_request_headers;
|
|
64 ngx_flag_t pass_request_body;
|
|
65
|
|
66 ngx_flag_t redirect_errors;
|
|
67 ngx_flag_t pass_unparsed_uri;
|
|
68 ngx_flag_t cyclic_temp_file;
|
479
|
69
|
509
|
70 ngx_flag_t pass_x_powered_by;
|
|
71 ngx_flag_t pass_server;
|
|
72 ngx_flag_t pass_date;
|
|
73 ngx_flag_t pass_x_accel_expires;
|
479
|
74
|
509
|
75 ngx_path_t *temp_path;
|
|
76
|
|
77 ngx_str_t schema;
|
|
78 ngx_str_t uri;
|
|
79 ngx_str_t *location;
|
|
80 ngx_str_t url; /* used in proxy_rewrite_location */
|
479
|
81 } ngx_http_upstream_conf_t;
|
|
82
|
|
83
|
509
|
84 typedef struct {
|
|
85 ngx_str_t name;
|
|
86 ngx_http_header_handler_pt handler;
|
|
87 ngx_uint_t offset;
|
|
88 ngx_http_header_handler_pt copy_handler;
|
|
89 ngx_uint_t conf;
|
|
90 } ngx_http_upstream_header_t;
|
|
91
|
|
92
|
|
93 typedef struct {
|
|
94 ngx_list_t headers;
|
|
95
|
|
96 ngx_table_elt_t *status;
|
|
97 ngx_table_elt_t *date;
|
|
98 ngx_table_elt_t *server;
|
|
99 ngx_table_elt_t *connection;
|
|
100
|
|
101 ngx_table_elt_t *expires;
|
|
102 ngx_table_elt_t *etag;
|
|
103 ngx_table_elt_t *x_accel_expires;
|
|
104
|
|
105 ngx_table_elt_t *content_type;
|
|
106 ngx_table_elt_t *content_length;
|
|
107
|
|
108 ngx_table_elt_t *last_modified;
|
|
109 ngx_table_elt_t *location;
|
|
110 ngx_table_elt_t *accept_ranges;
|
|
111
|
|
112 #if (NGX_HTTP_GZIP)
|
|
113 ngx_table_elt_t *content_encoding;
|
|
114 #endif
|
|
115
|
|
116 ngx_array_t cache_control;
|
|
117 } ngx_http_upstream_headers_in_t;
|
|
118
|
479
|
119
|
|
120 struct ngx_http_upstream_s {
|
509
|
121 ngx_http_request_t *request;
|
|
122
|
|
123 ngx_peer_connection_t peer;
|
479
|
124
|
509
|
125 ngx_event_pipe_t pipe;
|
479
|
126
|
509
|
127 ngx_chain_t *request_bufs;
|
479
|
128
|
509
|
129 ngx_output_chain_ctx_t output;
|
|
130 ngx_chain_writer_ctx_t writer;
|
479
|
131
|
509
|
132 ngx_http_upstream_conf_t *conf;
|
479
|
133
|
509
|
134 ngx_http_upstream_headers_in_t headers_in;
|
|
135
|
|
136 ngx_buf_t header_in;
|
479
|
137
|
509
|
138 ngx_int_t (*create_request)(ngx_http_request_t *r);
|
|
139 ngx_int_t (*reinit_request)(ngx_http_request_t *r);
|
|
140 ngx_int_t (*process_header)(ngx_http_request_t *r);
|
|
141 void (*abort_request)(ngx_http_request_t *r);
|
|
142 void (*finalize_request)(ngx_http_request_t *r,
|
|
143 ngx_int_t rc);
|
|
144 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r,
|
|
145 ngx_table_elt_t *h, size_t prefix);
|
479
|
146
|
509
|
147 ngx_uint_t method;
|
479
|
148
|
509
|
149 ngx_http_log_handler_pt saved_log_handler;
|
|
150
|
|
151 ngx_http_upstream_state_t *state;
|
|
152 ngx_array_t states; /* of ngx_http_upstream_state_t */
|
479
|
153
|
509
|
154 unsigned cachable:1;
|
|
155 unsigned accel:1;
|
479
|
156
|
509
|
157 unsigned request_sent:1;
|
|
158 unsigned header_sent:1;
|
479
|
159 };
|
|
160
|
|
161
|
|
162 void ngx_http_upstream_init(ngx_http_request_t *r);
|
509
|
163
|
479
|
164
|
509
|
165 extern ngx_module_t ngx_http_upstream_module;
|
479
|
166
|
|
167 extern char *ngx_http_upstream_header_errors[];
|
|
168
|
|
169
|
|
170 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */
|