|
28
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
|
9 #include <ngx_http.h>
|
|
|
10
|
|
|
11
|
|
464
|
12 #if (NGX_HTTP_CACHE)
|
|
|
13 static ngx_int_t ngx_http_upstream_cache(ngx_http_request_t *r,
|
|
|
14 ngx_http_upstream_t *u);
|
|
|
15 static ngx_int_t ngx_http_upstream_cache_send(ngx_http_request_t *r,
|
|
|
16 ngx_http_upstream_t *u);
|
|
502
|
17 static ngx_int_t ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
|
18 ngx_http_variable_value_t *v, uintptr_t data);
|
|
464
|
19 #endif
|
|
|
20
|
|
348
|
21 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
|
|
58
|
22 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
|
|
|
23 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
|
|
|
24 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
25 ngx_event_t *ev);
|
|
28
|
26 static void ngx_http_upstream_connect(ngx_http_request_t *r,
|
|
36
|
27 ngx_http_upstream_t *u);
|
|
58
|
28 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
|
|
36
|
29 ngx_http_upstream_t *u);
|
|
28
|
30 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
|
|
36
|
31 ngx_http_upstream_t *u);
|
|
430
|
32 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
33 ngx_http_upstream_t *u);
|
|
|
34 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
|
|
|
35 ngx_http_upstream_t *u);
|
|
412
|
36 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
|
|
|
37 ngx_http_upstream_t *u);
|
|
|
38 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
39 ngx_http_upstream_t *u);
|
|
294
|
40 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
|
|
464
|
41 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
|
|
|
42 ngx_http_upstream_t *u);
|
|
430
|
43 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
44 ngx_http_upstream_t *u);
|
|
28
|
45 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
|
|
36
|
46 ngx_http_upstream_t *u);
|
|
130
|
47 static void
|
|
|
48 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
|
|
430
|
49 static void
|
|
|
50 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
51 ngx_http_upstream_t *u);
|
|
428
|
52 static void
|
|
|
53 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
54 ngx_uint_t do_write);
|
|
130
|
55 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
|
|
|
56 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
|
|
|
57 ssize_t bytes);
|
|
58
|
58 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
|
|
430
|
59 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
60 ngx_http_upstream_t *u);
|
|
428
|
61 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
|
|
318
|
62 static void ngx_http_upstream_store(ngx_http_request_t *r,
|
|
|
63 ngx_http_upstream_t *u);
|
|
430
|
64 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
|
|
|
65 ngx_http_upstream_t *u);
|
|
28
|
66 static void ngx_http_upstream_next(ngx_http_request_t *r,
|
|
36
|
67 ngx_http_upstream_t *u, ngx_uint_t ft_type);
|
|
118
|
68 static void ngx_http_upstream_cleanup(void *data);
|
|
28
|
69 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
36
|
70 ngx_http_upstream_t *u, ngx_int_t rc);
|
|
28
|
71
|
|
58
|
72 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
|
|
|
73 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
74 static ngx_int_t
|
|
472
|
75 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
|
58
|
76 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
77 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
|
|
|
78 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
472
|
79 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
|
|
|
80 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
81 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
|
82 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
76
|
83 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
|
|
|
84 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
85 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
|
|
58
|
86 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
206
|
87 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
|
|
|
88 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
89 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
|
|
58
|
90 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
91 static ngx_int_t
|
|
|
92 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
93 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
94 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
|
|
|
95 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
96 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
|
|
|
97 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
464
|
98 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
|
|
|
99 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
58
|
100 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
|
|
|
101 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
102 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
|
|
|
103 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
464
|
104 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
105 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
106
|
|
58
|
107 #if (NGX_HTTP_GZIP)
|
|
|
108 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
109 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
110 #endif
|
|
|
111
|
|
122
|
112 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
|
|
298
|
113 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
114 ngx_http_variable_value_t *v, uintptr_t data);
|
|
122
|
115 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
116 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
117 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
118 ngx_http_variable_value_t *v, uintptr_t data);
|
|
430
|
119 static ngx_int_t ngx_http_upstream_response_length_variable(
|
|
|
120 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
|
|
122
|
121
|
|
200
|
122 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
|
|
|
123 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
124 void *conf);
|
|
|
125
|
|
58
|
126 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
|
|
200
|
127 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
|
|
58
|
128
|
|
126
|
129 #if (NGX_HTTP_SSL)
|
|
140
|
130 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
|
|
|
131 ngx_http_upstream_t *u, ngx_connection_t *c);
|
|
126
|
132 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
|
|
|
133 #endif
|
|
|
134
|
|
58
|
135
|
|
|
136 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
|
|
|
137
|
|
|
138 { ngx_string("Status"),
|
|
|
139 ngx_http_upstream_process_header_line,
|
|
|
140 offsetof(ngx_http_upstream_headers_in_t, status),
|
|
198
|
141 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
142
|
|
|
143 { ngx_string("Content-Type"),
|
|
|
144 ngx_http_upstream_process_header_line,
|
|
|
145 offsetof(ngx_http_upstream_headers_in_t, content_type),
|
|
222
|
146 ngx_http_upstream_copy_content_type, 0, 1 },
|
|
58
|
147
|
|
|
148 { ngx_string("Content-Length"),
|
|
|
149 ngx_http_upstream_process_header_line,
|
|
|
150 offsetof(ngx_http_upstream_headers_in_t, content_length),
|
|
64
|
151 ngx_http_upstream_copy_content_length, 0, 0 },
|
|
58
|
152
|
|
|
153 { ngx_string("Date"),
|
|
|
154 ngx_http_upstream_process_header_line,
|
|
|
155 offsetof(ngx_http_upstream_headers_in_t, date),
|
|
198
|
156 ngx_http_upstream_copy_header_line,
|
|
|
157 offsetof(ngx_http_headers_out_t, date), 0 },
|
|
58
|
158
|
|
318
|
159 { ngx_string("Last-Modified"),
|
|
|
160 ngx_http_upstream_process_header_line,
|
|
|
161 offsetof(ngx_http_upstream_headers_in_t, last_modified),
|
|
464
|
162 ngx_http_upstream_copy_last_modified, 0, 0 },
|
|
318
|
163
|
|
58
|
164 { ngx_string("Server"),
|
|
|
165 ngx_http_upstream_process_header_line,
|
|
|
166 offsetof(ngx_http_upstream_headers_in_t, server),
|
|
198
|
167 ngx_http_upstream_copy_header_line,
|
|
|
168 offsetof(ngx_http_headers_out_t, server), 0 },
|
|
58
|
169
|
|
78
|
170 { ngx_string("WWW-Authenticate"),
|
|
|
171 ngx_http_upstream_process_header_line,
|
|
|
172 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
|
|
|
173 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
|
174
|
|
58
|
175 { ngx_string("Location"),
|
|
392
|
176 ngx_http_upstream_process_header_line,
|
|
|
177 offsetof(ngx_http_upstream_headers_in_t, location),
|
|
64
|
178 ngx_http_upstream_rewrite_location, 0, 0 },
|
|
58
|
179
|
|
|
180 { ngx_string("Refresh"),
|
|
|
181 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
182 ngx_http_upstream_rewrite_refresh, 0, 0 },
|
|
|
183
|
|
|
184 { ngx_string("Set-Cookie"),
|
|
|
185 ngx_http_upstream_ignore_header_line, 0,
|
|
80
|
186 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
|
187
|
|
|
188 { ngx_string("Content-Disposition"),
|
|
|
189 ngx_http_upstream_ignore_header_line, 0,
|
|
|
190 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
58
|
191
|
|
|
192 { ngx_string("Cache-Control"),
|
|
472
|
193 ngx_http_upstream_process_cache_control, 0,
|
|
58
|
194 ngx_http_upstream_copy_multi_header_lines,
|
|
64
|
195 offsetof(ngx_http_headers_out_t, cache_control), 1 },
|
|
58
|
196
|
|
122
|
197 { ngx_string("Expires"),
|
|
472
|
198 ngx_http_upstream_process_expires, 0,
|
|
122
|
199 ngx_http_upstream_copy_header_line,
|
|
|
200 offsetof(ngx_http_headers_out_t, expires), 1 },
|
|
|
201
|
|
126
|
202 { ngx_string("Accept-Ranges"),
|
|
|
203 ngx_http_upstream_process_header_line,
|
|
|
204 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
|
|
464
|
205 ngx_http_upstream_copy_allow_ranges,
|
|
126
|
206 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
|
|
|
207
|
|
58
|
208 { ngx_string("Connection"),
|
|
|
209 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
210 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
211
|
|
190
|
212 { ngx_string("Keep-Alive"),
|
|
|
213 ngx_http_upstream_ignore_header_line, 0,
|
|
|
214 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
215
|
|
58
|
216 { ngx_string("X-Powered-By"),
|
|
|
217 ngx_http_upstream_ignore_header_line, 0,
|
|
198
|
218 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
219
|
|
|
220 { ngx_string("X-Accel-Expires"),
|
|
472
|
221 ngx_http_upstream_process_accel_expires, 0,
|
|
198
|
222 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
64
|
223
|
|
|
224 { ngx_string("X-Accel-Redirect"),
|
|
|
225 ngx_http_upstream_process_header_line,
|
|
|
226 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
|
|
|
227 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
228
|
|
76
|
229 { ngx_string("X-Accel-Limit-Rate"),
|
|
|
230 ngx_http_upstream_process_limit_rate, 0,
|
|
|
231 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
232
|
|
198
|
233 { ngx_string("X-Accel-Buffering"),
|
|
|
234 ngx_http_upstream_process_buffering, 0,
|
|
|
235 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
236
|
|
206
|
237 { ngx_string("X-Accel-Charset"),
|
|
|
238 ngx_http_upstream_process_charset, 0,
|
|
|
239 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
240
|
|
58
|
241 #if (NGX_HTTP_GZIP)
|
|
|
242 { ngx_string("Content-Encoding"),
|
|
|
243 ngx_http_upstream_process_header_line,
|
|
|
244 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
|
|
64
|
245 ngx_http_upstream_copy_content_encoding, 0, 0 },
|
|
58
|
246 #endif
|
|
|
247
|
|
64
|
248 { ngx_null_string, NULL, 0, NULL, 0, 0 }
|
|
58
|
249 };
|
|
28
|
250
|
|
|
251
|
|
200
|
252 static ngx_command_t ngx_http_upstream_commands[] = {
|
|
|
253
|
|
|
254 { ngx_string("upstream"),
|
|
|
255 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
|
|
|
256 ngx_http_upstream,
|
|
|
257 0,
|
|
|
258 0,
|
|
|
259 NULL },
|
|
|
260
|
|
|
261 { ngx_string("server"),
|
|
260
|
262 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
|
|
200
|
263 ngx_http_upstream_server,
|
|
|
264 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
265 0,
|
|
|
266 NULL },
|
|
|
267
|
|
|
268 ngx_null_command
|
|
|
269 };
|
|
|
270
|
|
|
271
|
|
|
272 static ngx_http_module_t ngx_http_upstream_module_ctx = {
|
|
122
|
273 ngx_http_upstream_add_variables, /* preconfiguration */
|
|
58
|
274 NULL, /* postconfiguration */
|
|
|
275
|
|
|
276 ngx_http_upstream_create_main_conf, /* create main configuration */
|
|
200
|
277 ngx_http_upstream_init_main_conf, /* init main configuration */
|
|
28
|
278
|
|
|
279 NULL, /* create server configuration */
|
|
|
280 NULL, /* merge server configuration */
|
|
|
281
|
|
|
282 NULL, /* create location configuration */
|
|
|
283 NULL /* merge location configuration */
|
|
|
284 };
|
|
126
|
285
|
|
28
|
286
|
|
|
287 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
288 NGX_MODULE_V1,
|
|
28
|
289 &ngx_http_upstream_module_ctx, /* module context */
|
|
200
|
290 ngx_http_upstream_commands, /* module directives */
|
|
28
|
291 NGX_HTTP_MODULE, /* module type */
|
|
90
|
292 NULL, /* init master */
|
|
28
|
293 NULL, /* init module */
|
|
90
|
294 NULL, /* init process */
|
|
|
295 NULL, /* init thread */
|
|
|
296 NULL, /* exit thread */
|
|
|
297 NULL, /* exit process */
|
|
|
298 NULL, /* exit master */
|
|
|
299 NGX_MODULE_V1_PADDING
|
|
28
|
300 };
|
|
|
301
|
|
|
302
|
|
122
|
303 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
304
|
|
298
|
305 { ngx_string("upstream_addr"), NULL,
|
|
426
|
306 ngx_http_upstream_addr_variable, 0,
|
|
|
307 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
298
|
308
|
|
186
|
309 { ngx_string("upstream_status"), NULL,
|
|
426
|
310 ngx_http_upstream_status_variable, 0,
|
|
|
311 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
312
|
|
186
|
313 { ngx_string("upstream_response_time"), NULL,
|
|
426
|
314 ngx_http_upstream_response_time_variable, 0,
|
|
|
315 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
316
|
|
430
|
317 { ngx_string("upstream_response_length"), NULL,
|
|
|
318 ngx_http_upstream_response_length_variable, 0,
|
|
|
319 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
320
|
|
502
|
321 { ngx_string("upstream_cache_status"), NULL,
|
|
|
322 ngx_http_upstream_cache_status, 0,
|
|
|
323 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
324
|
|
186
|
325 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
326 };
|
|
|
327
|
|
|
328
|
|
412
|
329 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
330 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
331 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
332 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
333 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
334 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
335 { 0, 0 }
|
|
|
336 };
|
|
|
337
|
|
494
|
338
|
|
|
339 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
|
340 { ngx_string("GET"), NGX_HTTP_GET},
|
|
|
341 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
|
342 { ngx_string("POST"), NGX_HTTP_POST },
|
|
|
343 { ngx_null_string, 0 }
|
|
|
344 };
|
|
|
345
|
|
|
346
|
|
36
|
347 void
|
|
|
348 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
349 {
|
|
348
|
350 ngx_str_t *host;
|
|
|
351 ngx_uint_t i;
|
|
|
352 ngx_connection_t *c;
|
|
|
353 ngx_resolver_ctx_t *ctx, temp;
|
|
|
354 ngx_http_cleanup_t *cln;
|
|
|
355 ngx_http_upstream_t *u;
|
|
|
356 ngx_http_core_loc_conf_t *clcf;
|
|
|
357 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
358 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
359
|
|
|
360 c = r->connection;
|
|
|
361
|
|
|
362 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
363 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
364
|
|
|
365 if (c->read->timer_set) {
|
|
|
366 ngx_del_timer(c->read);
|
|
|
367 }
|
|
|
368
|
|
178
|
369 u = r->upstream;
|
|
|
370
|
|
482
|
371 u->store = (u->conf->store || u->conf->store_lengths);
|
|
|
372
|
|
|
373 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
374 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
375 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
376 }
|
|
126
|
377
|
|
28
|
378 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
379
|
|
|
380 if (!c->write->active) {
|
|
80
|
381 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
382 == NGX_ERROR)
|
|
28
|
383 {
|
|
|
384 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
385 return;
|
|
|
386 }
|
|
|
387 }
|
|
|
388 }
|
|
|
389
|
|
86
|
390 if (r->request_body) {
|
|
|
391 u->request_bufs = r->request_body->bufs;
|
|
|
392 }
|
|
58
|
393
|
|
464
|
394 #if (NGX_HTTP_CACHE)
|
|
|
395
|
|
|
396 if (u->conf->cache) {
|
|
|
397 ngx_int_t rc;
|
|
|
398
|
|
|
399 rc = ngx_http_upstream_cache(r, u);
|
|
|
400
|
|
|
401 if (rc == NGX_DONE) {
|
|
|
402 return;
|
|
|
403 }
|
|
|
404
|
|
|
405 if (rc != NGX_DECLINED) {
|
|
|
406 ngx_http_finalize_request(r, rc);
|
|
|
407 return;
|
|
|
408 }
|
|
|
409 }
|
|
|
410
|
|
|
411 #endif
|
|
|
412
|
|
86
|
413 if (u->create_request(r) != NGX_OK) {
|
|
28
|
414 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
415 return;
|
|
|
416 }
|
|
|
417
|
|
58
|
418 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
419
|
|
|
420 u->output.pool = r->pool;
|
|
|
421 u->output.bufs.num = 1;
|
|
58
|
422 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
423 u->output.output_filter = ngx_chain_writer;
|
|
|
424 u->output.filter_ctx = &u->writer;
|
|
|
425
|
|
|
426 u->writer.pool = r->pool;
|
|
|
427
|
|
296
|
428 if (r->upstream_states == NULL) {
|
|
|
429
|
|
|
430 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
431 sizeof(ngx_http_upstream_state_t));
|
|
|
432 if (r->upstream_states == NULL) {
|
|
|
433 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
434 return;
|
|
|
435 }
|
|
|
436
|
|
|
437 } else {
|
|
|
438
|
|
|
439 u->state = ngx_array_push(r->upstream_states);
|
|
|
440 if (u->state == NULL) {
|
|
|
441 ngx_http_upstream_finalize_request(r, u,
|
|
|
442 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
443 return;
|
|
|
444 }
|
|
|
445
|
|
|
446 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
447 }
|
|
|
448
|
|
142
|
449 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
450 if (cln == NULL) {
|
|
|
451 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
452 return;
|
|
|
453 }
|
|
|
454
|
|
|
455 cln->handler = ngx_http_upstream_cleanup;
|
|
|
456 cln->data = r;
|
|
|
457 u->cleanup = &cln->handler;
|
|
|
458
|
|
348
|
459 if (u->resolved == NULL) {
|
|
|
460
|
|
|
461 uscf = u->conf->upstream;
|
|
|
462
|
|
|
463 } else {
|
|
|
464
|
|
434
|
465 if (u->resolved->sockaddr) {
|
|
|
466
|
|
|
467 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
468 != NGX_OK)
|
|
|
469 {
|
|
|
470 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
471 return;
|
|
|
472 }
|
|
|
473
|
|
|
474 ngx_http_upstream_connect(r, u);
|
|
|
475
|
|
|
476 return;
|
|
|
477 }
|
|
|
478
|
|
356
|
479 host = &u->resolved->host;
|
|
348
|
480
|
|
|
481 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
482
|
|
|
483 uscfp = umcf->upstreams.elts;
|
|
|
484
|
|
|
485 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
486
|
|
|
487 uscf = uscfp[i];
|
|
|
488
|
|
|
489 if (uscf->host.len == host->len
|
|
416
|
490 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
491 || uscf->port == u->resolved->port)
|
|
348
|
492 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
493 {
|
|
|
494 goto found;
|
|
|
495 }
|
|
|
496 }
|
|
|
497
|
|
|
498 temp.name = *host;
|
|
|
499
|
|
|
500 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
501 if (ctx == NULL) {
|
|
|
502 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
503 return;
|
|
|
504 }
|
|
|
505
|
|
354
|
506 if (ctx == NGX_NO_RESOLVER) {
|
|
|
507 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
508 "no resolver defined to resolve %V", host);
|
|
|
509
|
|
|
510 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
511 return;
|
|
|
512 }
|
|
|
513
|
|
348
|
514 ctx->name = *host;
|
|
|
515 ctx->type = NGX_RESOLVE_A;
|
|
|
516 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
517 ctx->data = r;
|
|
|
518 ctx->timeout = clcf->resolver_timeout;
|
|
|
519
|
|
372
|
520 u->resolved->ctx = ctx;
|
|
|
521
|
|
348
|
522 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
523 u->resolved->ctx = NULL;
|
|
348
|
524 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
525 return;
|
|
|
526 }
|
|
|
527
|
|
|
528 return;
|
|
|
529 }
|
|
|
530
|
|
|
531 found:
|
|
|
532
|
|
|
533 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
534 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
535 return;
|
|
|
536 }
|
|
|
537
|
|
28
|
538 ngx_http_upstream_connect(r, u);
|
|
|
539 }
|
|
|
540
|
|
|
541
|
|
464
|
542 #if (NGX_HTTP_CACHE)
|
|
|
543
|
|
|
544 static ngx_int_t
|
|
|
545 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
546 {
|
|
|
547 ngx_int_t rc;
|
|
|
548 ngx_http_cache_t *c;
|
|
|
549
|
|
494
|
550 if (!(r->method & u->conf->cache_methods)) {
|
|
472
|
551 return NGX_DECLINED;
|
|
|
552 }
|
|
|
553
|
|
480
|
554 if (r->method & NGX_HTTP_HEAD) {
|
|
|
555 u->method = ngx_http_core_get_method;
|
|
|
556 }
|
|
|
557
|
|
464
|
558 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
|
|
|
559 if (c == NULL) {
|
|
|
560 return NGX_ERROR;
|
|
|
561 }
|
|
|
562
|
|
|
563 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
|
|
|
564 return NGX_ERROR;
|
|
|
565 }
|
|
|
566
|
|
|
567 r->cache = c;
|
|
|
568 c->file.log = r->connection->log;
|
|
|
569
|
|
|
570 if (u->create_key(r) != NGX_OK) {
|
|
|
571 return NGX_ERROR;
|
|
|
572 }
|
|
|
573
|
|
|
574 /* TODO: add keys */
|
|
|
575
|
|
|
576 ngx_http_file_cache_create_key(r);
|
|
|
577
|
|
|
578 u->cacheable = 1;
|
|
|
579
|
|
494
|
580 c->min_uses = u->conf->cache_min_uses;
|
|
|
581 c->body_start = u->conf->buffer_size;
|
|
464
|
582 c->file_cache = u->conf->cache->data;
|
|
|
583
|
|
502
|
584 u->cache_status = NGX_HTTP_CACHE_MISS;
|
|
|
585
|
|
464
|
586 rc = ngx_http_file_cache_open(r);
|
|
|
587
|
|
498
|
588 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
589 "http upstream cache: %i", rc);
|
|
|
590
|
|
502
|
591 switch (rc) {
|
|
|
592
|
|
|
593 case NGX_HTTP_CACHE_UPDATING:
|
|
|
594
|
|
498
|
595 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
|
502
|
596 u->cache_status = rc;
|
|
498
|
597 rc = NGX_OK;
|
|
|
598
|
|
|
599 } else {
|
|
|
600 rc = NGX_HTTP_CACHE_STALE;
|
|
|
601 }
|
|
502
|
602
|
|
|
603 break;
|
|
|
604
|
|
|
605 case NGX_OK:
|
|
|
606 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
498
|
607 }
|
|
464
|
608
|
|
502
|
609 switch (rc) {
|
|
|
610
|
|
|
611 case NGX_OK:
|
|
464
|
612
|
|
|
613 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
614
|
|
|
615 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
616 return rc;
|
|
|
617 }
|
|
|
618
|
|
502
|
619 break;
|
|
|
620
|
|
|
621 case NGX_ERROR:
|
|
464
|
622
|
|
|
623 return NGX_ERROR;
|
|
|
624
|
|
502
|
625 case NGX_HTTP_CACHE_STALE:
|
|
464
|
626
|
|
472
|
627 c->valid_sec = 0;
|
|
464
|
628 u->buffer.start = NULL;
|
|
502
|
629 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
|
630
|
|
|
631 break;
|
|
|
632
|
|
|
633 case NGX_DECLINED:
|
|
464
|
634
|
|
|
635 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
|
636 u->buffer.start = NULL;
|
|
|
637
|
|
|
638 } else {
|
|
|
639 u->buffer.pos = u->buffer.start + c->header_start;
|
|
|
640 u->buffer.last = u->buffer.pos;
|
|
|
641 }
|
|
|
642
|
|
502
|
643 break;
|
|
|
644
|
|
|
645 case NGX_AGAIN:
|
|
464
|
646
|
|
|
647 u->cacheable = 0;
|
|
|
648
|
|
502
|
649 break;
|
|
|
650
|
|
|
651 default:
|
|
464
|
652
|
|
|
653 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
|
654
|
|
502
|
655 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
|
656
|
|
464
|
657 return rc;
|
|
|
658 }
|
|
|
659
|
|
|
660 r->cached = 0;
|
|
|
661
|
|
|
662 return NGX_DECLINED;
|
|
|
663 }
|
|
|
664
|
|
|
665
|
|
|
666 static ngx_int_t
|
|
|
667 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
668 {
|
|
|
669 ngx_int_t rc;
|
|
|
670 ngx_http_cache_t *c;
|
|
|
671
|
|
502
|
672 r->cached = 1;
|
|
464
|
673 c = r->cache;
|
|
|
674
|
|
|
675 /* TODO: cache stack */
|
|
|
676
|
|
|
677 u->buffer = *c->buf;
|
|
|
678 u->buffer.pos += c->header_start;
|
|
|
679
|
|
|
680 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
681
|
|
|
682 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
|
683 sizeof(ngx_table_elt_t))
|
|
|
684 != NGX_OK)
|
|
|
685 {
|
|
|
686 return NGX_ERROR;
|
|
|
687 }
|
|
|
688
|
|
|
689 rc = u->process_header(r);
|
|
|
690
|
|
|
691 if (rc == NGX_OK) {
|
|
|
692
|
|
|
693 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
|
694 return NGX_DONE;
|
|
|
695 }
|
|
|
696
|
|
|
697 return ngx_http_cache_send(r);
|
|
|
698 }
|
|
|
699
|
|
|
700 if (rc == NGX_ERROR) {
|
|
|
701 return NGX_ERROR;
|
|
|
702 }
|
|
|
703
|
|
|
704 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
|
705
|
|
|
706 /* TODO: delete file */
|
|
|
707
|
|
|
708 return rc;
|
|
|
709 }
|
|
|
710
|
|
|
711 #endif
|
|
|
712
|
|
|
713
|
|
36
|
714 static void
|
|
348
|
715 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
716 {
|
|
|
717 ngx_http_request_t *r;
|
|
|
718 ngx_http_upstream_resolved_t *ur;
|
|
|
719
|
|
|
720 r = ctx->data;
|
|
|
721
|
|
|
722 r->upstream->resolved->ctx = NULL;
|
|
|
723
|
|
|
724 if (ctx->state) {
|
|
|
725 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
726 "%V could not be resolved (%i: %s)",
|
|
|
727 &ctx->name, ctx->state,
|
|
|
728 ngx_resolver_strerror(ctx->state));
|
|
|
729
|
|
|
730 ngx_resolve_name_done(ctx);
|
|
|
731 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
732 return;
|
|
|
733 }
|
|
|
734
|
|
|
735 ur = r->upstream->resolved;
|
|
|
736 ur->naddrs = ctx->naddrs;
|
|
|
737 ur->addrs = ctx->addrs;
|
|
|
738
|
|
|
739 #if (NGX_DEBUG)
|
|
|
740 {
|
|
|
741 in_addr_t addr;
|
|
|
742 ngx_uint_t i;
|
|
|
743
|
|
|
744 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
745 addr = ntohl(ur->addrs[i]);
|
|
|
746
|
|
|
747 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
748 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
749 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
750 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
751 }
|
|
|
752 }
|
|
|
753 #endif
|
|
|
754
|
|
|
755 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
756 ngx_resolve_name_done(ctx);
|
|
|
757 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
758 return;
|
|
|
759 }
|
|
|
760
|
|
|
761 ngx_resolve_name_done(ctx);
|
|
|
762
|
|
|
763 ngx_http_upstream_connect(r, r->upstream);
|
|
|
764 }
|
|
|
765
|
|
|
766
|
|
|
767 static void
|
|
426
|
768 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
769 {
|
|
|
770 ngx_connection_t *c;
|
|
|
771 ngx_http_request_t *r;
|
|
|
772 ngx_http_log_ctx_t *ctx;
|
|
|
773 ngx_http_upstream_t *u;
|
|
|
774
|
|
|
775 c = ev->data;
|
|
|
776 r = c->data;
|
|
|
777
|
|
|
778 u = r->upstream;
|
|
|
779 c = r->connection;
|
|
|
780
|
|
|
781 ctx = c->log->data;
|
|
|
782 ctx->current_request = r;
|
|
|
783
|
|
|
784 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
785 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
786
|
|
|
787 if (ev->write) {
|
|
430
|
788 u->write_event_handler(r, u);
|
|
426
|
789
|
|
|
790 } else {
|
|
430
|
791 u->read_event_handler(r, u);
|
|
426
|
792 }
|
|
|
793
|
|
|
794 ngx_http_run_posted_requests(c);
|
|
|
795 }
|
|
|
796
|
|
|
797
|
|
|
798 static void
|
|
58
|
799 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
800 {
|
|
|
801 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
802 }
|
|
|
803
|
|
|
804
|
|
|
805 static void
|
|
|
806 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
807 {
|
|
|
808 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
809 }
|
|
|
810
|
|
|
811
|
|
|
812 static void
|
|
|
813 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
814 ngx_event_t *ev)
|
|
28
|
815 {
|
|
|
816 int n;
|
|
|
817 char buf[1];
|
|
126
|
818 ngx_err_t err;
|
|
486
|
819 ngx_int_t event;
|
|
28
|
820 ngx_connection_t *c;
|
|
|
821 ngx_http_upstream_t *u;
|
|
|
822
|
|
76
|
823 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
824 "http upstream check client, write event:%d, \"%V\"",
|
|
|
825 ev->write, &r->uri);
|
|
28
|
826
|
|
58
|
827 c = r->connection;
|
|
32
|
828 u = r->upstream;
|
|
|
829
|
|
132
|
830 if (c->error) {
|
|
486
|
831 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
832
|
|
|
833 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
834
|
|
|
835 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
|
836 ngx_http_upstream_finalize_request(r, u,
|
|
|
837 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
838 return;
|
|
|
839 }
|
|
|
840 }
|
|
|
841
|
|
482
|
842 if (!u->cacheable) {
|
|
|
843 ngx_http_upstream_finalize_request(r, u,
|
|
|
844 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
845 }
|
|
486
|
846
|
|
76
|
847 return;
|
|
|
848 }
|
|
|
849
|
|
32
|
850 if (u->peer.connection == NULL) {
|
|
|
851 return;
|
|
|
852 }
|
|
|
853
|
|
28
|
854 #if (NGX_HAVE_KQUEUE)
|
|
|
855
|
|
|
856 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
857
|
|
|
858 if (!ev->pending_eof) {
|
|
|
859 return;
|
|
|
860 }
|
|
|
861
|
|
|
862 ev->eof = 1;
|
|
132
|
863 c->error = 1;
|
|
28
|
864
|
|
|
865 if (ev->kq_errno) {
|
|
|
866 ev->error = 1;
|
|
|
867 }
|
|
|
868
|
|
482
|
869 if (!u->cacheable && u->peer.connection) {
|
|
28
|
870 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
871 "kevent() reported that client closed prematurely "
|
|
|
872 "connection, so upstream connection is closed too");
|
|
28
|
873 ngx_http_upstream_finalize_request(r, u,
|
|
|
874 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
875 return;
|
|
|
876 }
|
|
|
877
|
|
|
878 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
879 "kevent() reported that client closed "
|
|
|
880 "prematurely connection");
|
|
|
881
|
|
|
882 if (u->peer.connection == NULL) {
|
|
|
883 ngx_http_upstream_finalize_request(r, u,
|
|
|
884 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
885 return;
|
|
|
886 }
|
|
|
887
|
|
|
888 return;
|
|
|
889 }
|
|
|
890
|
|
|
891 #endif
|
|
|
892
|
|
|
893 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
894
|
|
|
895 err = ngx_socket_errno;
|
|
|
896
|
|
286
|
897 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
898 "http upstream recv(): %d", n);
|
|
|
899
|
|
28
|
900 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
901 return;
|
|
|
902 }
|
|
|
903
|
|
|
904 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
486
|
905
|
|
|
906 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
907
|
|
|
908 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
28
|
909 ngx_http_upstream_finalize_request(r, u,
|
|
|
910 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
911 return;
|
|
|
912 }
|
|
|
913 }
|
|
|
914
|
|
|
915 if (n > 0) {
|
|
|
916 return;
|
|
|
917 }
|
|
|
918
|
|
|
919 if (n == -1) {
|
|
|
920 if (err == NGX_EAGAIN) {
|
|
|
921 return;
|
|
|
922 }
|
|
|
923
|
|
|
924 ev->error = 1;
|
|
|
925
|
|
32
|
926 } else { /* n == 0 */
|
|
28
|
927 err = 0;
|
|
|
928 }
|
|
|
929
|
|
78
|
930 ev->eof = 1;
|
|
132
|
931 c->error = 1;
|
|
78
|
932
|
|
482
|
933 if (!u->cacheable && u->peer.connection) {
|
|
28
|
934 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
935 "client closed prematurely connection, "
|
|
|
936 "so upstream connection is closed too");
|
|
|
937 ngx_http_upstream_finalize_request(r, u,
|
|
|
938 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
939 return;
|
|
|
940 }
|
|
|
941
|
|
|
942 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
943 "client closed prematurely connection");
|
|
|
944
|
|
|
945 if (u->peer.connection == NULL) {
|
|
|
946 ngx_http_upstream_finalize_request(r, u,
|
|
|
947 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
948 return;
|
|
|
949 }
|
|
|
950 }
|
|
|
951
|
|
|
952
|
|
36
|
953 static void
|
|
|
954 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
955 {
|
|
140
|
956 ngx_int_t rc;
|
|
214
|
957 ngx_time_t *tp;
|
|
140
|
958 ngx_connection_t *c;
|
|
28
|
959
|
|
32
|
960 r->connection->log->action = "connecting to upstream";
|
|
28
|
961
|
|
|
962 r->connection->single_connection = 0;
|
|
|
963
|
|
262
|
964 if (u->state && u->state->response_sec) {
|
|
214
|
965 tp = ngx_timeofday();
|
|
262
|
966 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
967 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
968 }
|
|
|
969
|
|
296
|
970 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
971 if (u->state == NULL) {
|
|
|
972 ngx_http_upstream_finalize_request(r, u,
|
|
|
973 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
974 return;
|
|
|
975 }
|
|
|
976
|
|
|
977 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
978
|
|
|
979 tp = ngx_timeofday();
|
|
262
|
980 u->state->response_sec = tp->sec;
|
|
|
981 u->state->response_msec = tp->msec;
|
|
214
|
982
|
|
28
|
983 rc = ngx_event_connect_peer(&u->peer);
|
|
|
984
|
|
|
985 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
986 "http upstream connect: %i", rc);
|
|
|
987
|
|
|
988 if (rc == NGX_ERROR) {
|
|
|
989 ngx_http_upstream_finalize_request(r, u,
|
|
|
990 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
991 return;
|
|
|
992 }
|
|
|
993
|
|
356
|
994 u->state->peer = u->peer.name;
|
|
|
995
|
|
92
|
996 if (rc == NGX_BUSY) {
|
|
|
997 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
998 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
999 return;
|
|
92
|
1000 }
|
|
|
1001
|
|
326
|
1002 if (rc == NGX_DECLINED) {
|
|
28
|
1003 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1004 return;
|
|
|
1005 }
|
|
|
1006
|
|
126
|
1007 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
1008
|
|
28
|
1009 c = u->peer.connection;
|
|
|
1010
|
|
|
1011 c->data = r;
|
|
140
|
1012
|
|
426
|
1013 c->write->handler = ngx_http_upstream_handler;
|
|
|
1014 c->read->handler = ngx_http_upstream_handler;
|
|
|
1015
|
|
|
1016 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
1017 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
1018
|
|
326
|
1019 c->sendfile &= r->connection->sendfile;
|
|
372
|
1020 u->output.sendfile = c->sendfile;
|
|
28
|
1021
|
|
|
1022 c->pool = r->pool;
|
|
492
|
1023 c->log = r->connection->log;
|
|
|
1024 c->read->log = c->log;
|
|
|
1025 c->write->log = c->log;
|
|
28
|
1026
|
|
|
1027 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
1028
|
|
|
1029 u->writer.out = NULL;
|
|
|
1030 u->writer.last = &u->writer.out;
|
|
|
1031 u->writer.connection = c;
|
|
|
1032 u->writer.limit = 0;
|
|
|
1033
|
|
|
1034 if (u->request_sent) {
|
|
58
|
1035 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
1036 ngx_http_upstream_finalize_request(r, u,
|
|
|
1037 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1038 return;
|
|
|
1039 }
|
|
28
|
1040 }
|
|
|
1041
|
|
276
|
1042 if (r->request_body
|
|
|
1043 && r->request_body->buf
|
|
|
1044 && r->request_body->temp_file
|
|
|
1045 && r == r->main)
|
|
|
1046 {
|
|
122
|
1047 /*
|
|
|
1048 * the r->request_body->buf can be reused for one request only,
|
|
|
1049 * the subrequests should allocate their own temporay bufs
|
|
|
1050 */
|
|
|
1051
|
|
|
1052 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1053 if (u->output.free == NULL) {
|
|
|
1054 ngx_http_upstream_finalize_request(r, u,
|
|
|
1055 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1056 return;
|
|
28
|
1057 }
|
|
122
|
1058
|
|
|
1059 u->output.free->buf = r->request_body->buf;
|
|
|
1060 u->output.free->next = NULL;
|
|
|
1061 u->output.allocated = 1;
|
|
|
1062
|
|
|
1063 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
1064 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
1065 r->request_body->buf->tag = u->output.tag;
|
|
28
|
1066 }
|
|
|
1067
|
|
|
1068 u->request_sent = 0;
|
|
|
1069
|
|
|
1070 if (rc == NGX_AGAIN) {
|
|
|
1071 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
1072 return;
|
|
|
1073 }
|
|
|
1074
|
|
126
|
1075 #if (NGX_HTTP_SSL)
|
|
|
1076
|
|
348
|
1077 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1078 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
1079 return;
|
|
|
1080 }
|
|
|
1081
|
|
|
1082 #endif
|
|
|
1083
|
|
28
|
1084 ngx_http_upstream_send_request(r, u);
|
|
|
1085 }
|
|
|
1086
|
|
|
1087
|
|
126
|
1088 #if (NGX_HTTP_SSL)
|
|
|
1089
|
|
|
1090 static void
|
|
140
|
1091 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
1092 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
1093 {
|
|
260
|
1094 ngx_int_t rc;
|
|
140
|
1095
|
|
|
1096 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
1097 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
454
|
1098 != NGX_OK)
|
|
140
|
1099 {
|
|
|
1100 ngx_http_upstream_finalize_request(r, u,
|
|
|
1101 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1102 return;
|
|
|
1103 }
|
|
|
1104
|
|
|
1105 c->sendfile = 0;
|
|
168
|
1106 u->output.sendfile = 0;
|
|
140
|
1107
|
|
398
|
1108 if (u->conf->ssl_session_reuse) {
|
|
|
1109 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
1110 ngx_http_upstream_finalize_request(r, u,
|
|
|
1111 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1112 return;
|
|
|
1113 }
|
|
140
|
1114 }
|
|
|
1115
|
|
190
|
1116 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
1117
|
|
140
|
1118 rc = ngx_ssl_handshake(c);
|
|
|
1119
|
|
|
1120 if (rc == NGX_AGAIN) {
|
|
|
1121 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
1122 return;
|
|
|
1123 }
|
|
|
1124
|
|
|
1125 ngx_http_upstream_ssl_handshake(c);
|
|
|
1126 }
|
|
|
1127
|
|
|
1128
|
|
|
1129 static void
|
|
126
|
1130 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
1131 {
|
|
|
1132 ngx_http_request_t *r;
|
|
|
1133 ngx_http_upstream_t *u;
|
|
|
1134
|
|
|
1135 r = c->data;
|
|
|
1136 u = r->upstream;
|
|
|
1137
|
|
|
1138 if (c->ssl->handshaked) {
|
|
|
1139
|
|
398
|
1140 if (u->conf->ssl_session_reuse) {
|
|
|
1141 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
1142 }
|
|
260
|
1143
|
|
426
|
1144 c->write->handler = ngx_http_upstream_handler;
|
|
|
1145 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
1146
|
|
|
1147 ngx_http_upstream_send_request(r, u);
|
|
|
1148
|
|
|
1149 return;
|
|
|
1150 }
|
|
|
1151
|
|
|
1152 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1153
|
|
|
1154 }
|
|
|
1155
|
|
|
1156 #endif
|
|
|
1157
|
|
|
1158
|
|
58
|
1159 static ngx_int_t
|
|
36
|
1160 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1161 {
|
|
|
1162 ngx_chain_t *cl;
|
|
|
1163
|
|
58
|
1164 if (u->reinit_request(r) != NGX_OK) {
|
|
|
1165 return NGX_ERROR;
|
|
|
1166 }
|
|
|
1167
|
|
356
|
1168 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
1169
|
|
|
1170 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
1171 sizeof(ngx_table_elt_t))
|
|
|
1172 != NGX_OK)
|
|
58
|
1173 {
|
|
|
1174 return NGX_ERROR;
|
|
28
|
1175 }
|
|
|
1176
|
|
|
1177 /* reinit the request chain */
|
|
126
|
1178
|
|
58
|
1179 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
1180 cl->buf->pos = cl->buf->start;
|
|
|
1181 cl->buf->file_pos = 0;
|
|
|
1182 }
|
|
|
1183
|
|
58
|
1184 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
1185
|
|
122
|
1186 if (r->request_body && r->request_body->temp_file
|
|
146
|
1187 && r != r->main && u->output.buf)
|
|
122
|
1188 {
|
|
|
1189 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1190 if (u->output.free == NULL) {
|
|
|
1191 return NGX_ERROR;
|
|
58
|
1192 }
|
|
122
|
1193
|
|
|
1194 u->output.free->buf = u->output.buf;
|
|
|
1195 u->output.free->next = NULL;
|
|
|
1196
|
|
|
1197 u->output.buf->pos = u->output.buf->start;
|
|
|
1198 u->output.buf->last = u->output.buf->start;
|
|
58
|
1199 }
|
|
28
|
1200
|
|
|
1201 u->output.buf = NULL;
|
|
|
1202 u->output.in = NULL;
|
|
|
1203 u->output.busy = NULL;
|
|
126
|
1204
|
|
130
|
1205 /* reinit u->buffer */
|
|
126
|
1206
|
|
464
|
1207 u->buffer.pos = u->buffer.start;
|
|
|
1208
|
|
|
1209 #if (NGX_HTTP_CACHE)
|
|
|
1210
|
|
|
1211 if (r->cache) {
|
|
|
1212 u->buffer.pos += r->cache->header_start;
|
|
28
|
1213 }
|
|
58
|
1214
|
|
28
|
1215 #endif
|
|
|
1216
|
|
464
|
1217 u->buffer.last = u->buffer.pos;
|
|
|
1218
|
|
58
|
1219 return NGX_OK;
|
|
28
|
1220 }
|
|
|
1221
|
|
|
1222
|
|
36
|
1223 static void
|
|
|
1224 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1225 {
|
|
294
|
1226 ngx_int_t rc;
|
|
32
|
1227 ngx_connection_t *c;
|
|
126
|
1228
|
|
28
|
1229 c = u->peer.connection;
|
|
|
1230
|
|
|
1231 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1232 "http upstream send request");
|
|
|
1233
|
|
294
|
1234 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1235 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1236 return;
|
|
28
|
1237 }
|
|
|
1238
|
|
32
|
1239 c->log->action = "sending request to upstream";
|
|
28
|
1240
|
|
58
|
1241 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1242
|
|
|
1243 u->request_sent = 1;
|
|
|
1244
|
|
|
1245 if (rc == NGX_ERROR) {
|
|
|
1246 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1247 return;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 if (c->write->timer_set) {
|
|
|
1251 ngx_del_timer(c->write);
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 if (rc == NGX_AGAIN) {
|
|
|
1255 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1256
|
|
430
|
1257 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1258 ngx_http_upstream_finalize_request(r, u,
|
|
|
1259 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1260 return;
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 return;
|
|
|
1264 }
|
|
|
1265
|
|
|
1266 /* rc == NGX_OK */
|
|
|
1267
|
|
|
1268 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1269 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1270 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1271 ngx_tcp_push_n " failed");
|
|
|
1272 ngx_http_upstream_finalize_request(r, u,
|
|
|
1273 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1274 return;
|
|
28
|
1275 }
|
|
|
1276
|
|
|
1277 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1278 }
|
|
126
|
1279
|
|
28
|
1280 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1281
|
|
|
1282 #if 1
|
|
|
1283 if (c->read->ready) {
|
|
126
|
1284
|
|
28
|
1285 /* post aio operation */
|
|
|
1286
|
|
|
1287 /*
|
|
|
1288 * TODO comment
|
|
|
1289 * although we can post aio operation just in the end
|
|
|
1290 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1291 * it's better to do here because we postpone header buffer allocation
|
|
|
1292 */
|
|
|
1293
|
|
430
|
1294 ngx_http_upstream_process_header(r, u);
|
|
28
|
1295 return;
|
|
|
1296 }
|
|
|
1297 #endif
|
|
|
1298
|
|
426
|
1299 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1300
|
|
430
|
1301 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1302 ngx_http_upstream_finalize_request(r, u,
|
|
|
1303 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1304 return;
|
|
|
1305 }
|
|
|
1306 }
|
|
|
1307
|
|
|
1308
|
|
36
|
1309 static void
|
|
430
|
1310 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1311 ngx_http_upstream_t *u)
|
|
28
|
1312 {
|
|
430
|
1313 ngx_connection_t *c;
|
|
|
1314
|
|
|
1315 c = u->peer.connection;
|
|
|
1316
|
|
|
1317 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1318 "http upstream send request handler");
|
|
|
1319
|
|
430
|
1320 if (c->write->timedout) {
|
|
28
|
1321 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1322 return;
|
|
|
1323 }
|
|
|
1324
|
|
140
|
1325 #if (NGX_HTTP_SSL)
|
|
|
1326
|
|
348
|
1327 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1328 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1329 return;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 #endif
|
|
|
1333
|
|
200
|
1334 if (u->header_sent) {
|
|
426
|
1335 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1336
|
|
430
|
1337 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1338
|
|
|
1339 return;
|
|
|
1340 }
|
|
|
1341
|
|
28
|
1342 ngx_http_upstream_send_request(r, u);
|
|
|
1343 }
|
|
|
1344
|
|
|
1345
|
|
36
|
1346 static void
|
|
430
|
1347 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1348 {
|
|
464
|
1349 ssize_t n;
|
|
|
1350 ngx_int_t rc;
|
|
|
1351 ngx_connection_t *c;
|
|
28
|
1352
|
|
430
|
1353 c = u->peer.connection;
|
|
|
1354
|
|
|
1355 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1356 "http upstream process header");
|
|
28
|
1357
|
|
32
|
1358 c->log->action = "reading response header from upstream";
|
|
28
|
1359
|
|
430
|
1360 if (c->read->timedout) {
|
|
28
|
1361 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1362 return;
|
|
|
1363 }
|
|
126
|
1364
|
|
294
|
1365 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1366 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1367 return;
|
|
|
1368 }
|
|
|
1369
|
|
130
|
1370 if (u->buffer.start == NULL) {
|
|
|
1371 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1372 if (u->buffer.start == NULL) {
|
|
28
|
1373 ngx_http_upstream_finalize_request(r, u,
|
|
|
1374 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1375 return;
|
|
|
1376 }
|
|
|
1377
|
|
130
|
1378 u->buffer.pos = u->buffer.start;
|
|
|
1379 u->buffer.last = u->buffer.start;
|
|
|
1380 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1381 u->buffer.temporary = 1;
|
|
|
1382
|
|
|
1383 u->buffer.tag = u->output.tag;
|
|
28
|
1384
|
|
356
|
1385 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1386 sizeof(ngx_table_elt_t))
|
|
|
1387 != NGX_OK)
|
|
58
|
1388 {
|
|
|
1389 ngx_http_upstream_finalize_request(r, u,
|
|
|
1390 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1391 return;
|
|
|
1392 }
|
|
|
1393
|
|
464
|
1394 #if (NGX_HTTP_CACHE)
|
|
|
1395
|
|
|
1396 if (r->cache) {
|
|
|
1397 u->buffer.pos += r->cache->header_start;
|
|
130
|
1398 u->buffer.last = u->buffer.pos;
|
|
28
|
1399 }
|
|
|
1400 #endif
|
|
|
1401 }
|
|
|
1402
|
|
424
|
1403 for ( ;; ) {
|
|
|
1404
|
|
|
1405 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1406
|
|
|
1407 if (n == NGX_AGAIN) {
|
|
28
|
1408 #if 0
|
|
424
|
1409 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1410 #endif
|
|
|
1411
|
|
430
|
1412 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
424
|
1413 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1414 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1415 return;
|
|
|
1416 }
|
|
|
1417
|
|
|
1418 return;
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 if (n == 0) {
|
|
430
|
1422 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1423 "upstream prematurely closed connection");
|
|
|
1424 }
|
|
|
1425
|
|
|
1426 if (n == NGX_ERROR || n == 0) {
|
|
|
1427 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1428 return;
|
|
|
1429 }
|
|
|
1430
|
|
424
|
1431 u->buffer.last += n;
|
|
28
|
1432
|
|
|
1433 #if 0
|
|
424
|
1434 u->valid_header_in = 0;
|
|
|
1435
|
|
|
1436 u->peer.cached = 0;
|
|
28
|
1437 #endif
|
|
|
1438
|
|
424
|
1439 rc = u->process_header(r);
|
|
|
1440
|
|
|
1441 if (rc == NGX_AGAIN) {
|
|
|
1442
|
|
|
1443 if (u->buffer.pos == u->buffer.end) {
|
|
430
|
1444 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1445 "upstream sent too big header");
|
|
|
1446
|
|
|
1447 ngx_http_upstream_next(r, u,
|
|
|
1448 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1449 return;
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 continue;
|
|
28
|
1453 }
|
|
|
1454
|
|
424
|
1455 break;
|
|
28
|
1456 }
|
|
|
1457
|
|
|
1458 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1459 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1460 return;
|
|
|
1461 }
|
|
|
1462
|
|
356
|
1463 if (rc == NGX_ERROR) {
|
|
28
|
1464 ngx_http_upstream_finalize_request(r, u,
|
|
|
1465 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1466 return;
|
|
|
1467 }
|
|
|
1468
|
|
|
1469 /* rc == NGX_OK */
|
|
|
1470
|
|
412
|
1471 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1472
|
|
|
1473 if (r->subrequest_in_memory) {
|
|
|
1474 u->buffer.last = u->buffer.pos;
|
|
58
|
1475 }
|
|
|
1476
|
|
412
|
1477 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1478 return;
|
|
|
1479 }
|
|
|
1480
|
|
412
|
1481 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1482 return;
|
|
|
1483 }
|
|
58
|
1484 }
|
|
|
1485
|
|
464
|
1486 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
64
|
1487 return;
|
|
|
1488 }
|
|
|
1489
|
|
248
|
1490 if (!r->subrequest_in_memory) {
|
|
|
1491 ngx_http_upstream_send_response(r, u);
|
|
|
1492 return;
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 /* subrequest content in memory */
|
|
|
1496
|
|
|
1497 if (u->input_filter == NULL) {
|
|
|
1498 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1499 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1500 u->input_filter_ctx = r;
|
|
|
1501 }
|
|
|
1502
|
|
|
1503 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1504 ngx_http_upstream_finalize_request(r, u,
|
|
|
1505 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1506 return;
|
|
|
1507 }
|
|
|
1508
|
|
420
|
1509 n = u->buffer.last - u->buffer.pos;
|
|
|
1510
|
|
|
1511 if (n) {
|
|
|
1512 u->buffer.last -= n;
|
|
|
1513
|
|
430
|
1514 u->state->response_length += n;
|
|
|
1515
|
|
420
|
1516 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1517 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1518 return;
|
|
|
1519 }
|
|
|
1520
|
|
420
|
1521 if (u->length == 0) {
|
|
|
1522 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1523 return;
|
|
|
1524 }
|
|
248
|
1525 }
|
|
|
1526
|
|
426
|
1527 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1528
|
|
430
|
1529 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1530 }
|
|
|
1531
|
|
|
1532
|
|
294
|
1533 static ngx_int_t
|
|
412
|
1534 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1535 {
|
|
|
1536 ngx_uint_t status;
|
|
|
1537 ngx_http_upstream_next_t *un;
|
|
|
1538
|
|
|
1539 status = u->headers_in.status_n;
|
|
|
1540
|
|
|
1541 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1542
|
|
|
1543 if (status != un->status) {
|
|
|
1544 continue;
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1548 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1549 return NGX_OK;
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 #if (NGX_HTTP_CACHE)
|
|
|
1553
|
|
502
|
1554 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
1555 && (u->conf->cache_use_stale & un->mask))
|
|
|
1556 {
|
|
488
|
1557 ngx_int_t rc;
|
|
486
|
1558
|
|
|
1559 rc = u->reinit_request(r);
|
|
|
1560
|
|
|
1561 if (rc == NGX_OK) {
|
|
502
|
1562 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
486
|
1563 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
1564 }
|
|
|
1565
|
|
|
1566 ngx_http_upstream_finalize_request(r, u, rc);
|
|
412
|
1567 return NGX_OK;
|
|
|
1568 }
|
|
|
1569
|
|
|
1570 #endif
|
|
|
1571 }
|
|
|
1572
|
|
|
1573 return NGX_DECLINED;
|
|
|
1574 }
|
|
|
1575
|
|
|
1576
|
|
|
1577 static ngx_int_t
|
|
|
1578 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1579 ngx_http_upstream_t *u)
|
|
|
1580 {
|
|
|
1581 ngx_int_t status;
|
|
|
1582 ngx_uint_t i;
|
|
|
1583 ngx_table_elt_t *h;
|
|
|
1584 ngx_http_err_page_t *err_page;
|
|
|
1585 ngx_http_core_loc_conf_t *clcf;
|
|
|
1586
|
|
438
|
1587 status = u->headers_in.status_n;
|
|
|
1588
|
|
|
1589 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1590 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1591 return NGX_OK;
|
|
|
1592 }
|
|
|
1593
|
|
412
|
1594 if (!u->conf->intercept_errors) {
|
|
|
1595 return NGX_DECLINED;
|
|
|
1596 }
|
|
|
1597
|
|
|
1598 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1599
|
|
|
1600 if (clcf->error_pages == NULL) {
|
|
|
1601 return NGX_DECLINED;
|
|
|
1602 }
|
|
|
1603
|
|
|
1604 err_page = clcf->error_pages->elts;
|
|
|
1605 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1606
|
|
|
1607 if (err_page[i].status == status) {
|
|
|
1608
|
|
502
|
1609 if (status == NGX_HTTP_UNAUTHORIZED
|
|
|
1610 && u->headers_in.www_authenticate)
|
|
|
1611 {
|
|
412
|
1612 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1613
|
|
|
1614 if (h == NULL) {
|
|
|
1615 ngx_http_upstream_finalize_request(r, u,
|
|
|
1616 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1617 return NGX_OK;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 *h = *u->headers_in.www_authenticate;
|
|
|
1621
|
|
|
1622 r->headers_out.www_authenticate = h;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1626
|
|
|
1627 return NGX_OK;
|
|
|
1628 }
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 return NGX_DECLINED;
|
|
|
1632 }
|
|
|
1633
|
|
|
1634
|
|
|
1635 static ngx_int_t
|
|
294
|
1636 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1637 {
|
|
|
1638 int err;
|
|
|
1639 socklen_t len;
|
|
|
1640
|
|
|
1641 #if (NGX_HAVE_KQUEUE)
|
|
|
1642
|
|
|
1643 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1644 if (c->write->pending_eof) {
|
|
336
|
1645 c->log->action = "connecting to upstream";
|
|
296
|
1646 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1647 "kevent() reported that connect() failed");
|
|
|
1648 return NGX_ERROR;
|
|
|
1649 }
|
|
294
|
1650
|
|
|
1651 } else
|
|
|
1652 #endif
|
|
|
1653 {
|
|
296
|
1654 err = 0;
|
|
|
1655 len = sizeof(int);
|
|
|
1656
|
|
|
1657 /*
|
|
|
1658 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1659 * Solaris returns -1 and sets errno
|
|
|
1660 */
|
|
|
1661
|
|
|
1662 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1663 == -1)
|
|
|
1664 {
|
|
|
1665 err = ngx_errno;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 if (err) {
|
|
336
|
1669 c->log->action = "connecting to upstream";
|
|
296
|
1670 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1671 return NGX_ERROR;
|
|
|
1672 }
|
|
294
|
1673 }
|
|
|
1674
|
|
|
1675 return NGX_OK;
|
|
|
1676 }
|
|
|
1677
|
|
|
1678
|
|
464
|
1679 static ngx_int_t
|
|
|
1680 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1681 {
|
|
|
1682 ngx_str_t *uri, args;
|
|
|
1683 ngx_uint_t i, flags;
|
|
|
1684 ngx_list_part_t *part;
|
|
|
1685 ngx_table_elt_t *h;
|
|
|
1686 ngx_http_upstream_header_t *hh;
|
|
|
1687 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1688
|
|
|
1689 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1690
|
|
484
|
1691 if (u->headers_in.x_accel_redirect
|
|
|
1692 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
|
1693 {
|
|
464
|
1694 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1695
|
|
|
1696 part = &u->headers_in.headers.part;
|
|
|
1697 h = part->elts;
|
|
|
1698
|
|
|
1699 for (i = 0; /* void */; i++) {
|
|
|
1700
|
|
|
1701 if (i >= part->nelts) {
|
|
|
1702 if (part->next == NULL) {
|
|
|
1703 break;
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 part = part->next;
|
|
|
1707 h = part->elts;
|
|
|
1708 i = 0;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1712 h[i].lowcase_key, h[i].key.len);
|
|
|
1713
|
|
|
1714 if (hh && hh->redirect) {
|
|
|
1715 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1716 ngx_http_finalize_request(r,
|
|
|
1717 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1718 return NGX_DONE;
|
|
|
1719 }
|
|
|
1720 }
|
|
|
1721 }
|
|
|
1722
|
|
|
1723 uri = &u->headers_in.x_accel_redirect->value;
|
|
|
1724 args.len = 0;
|
|
|
1725 args.data = NULL;
|
|
|
1726 flags = 0;
|
|
|
1727
|
|
|
1728 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1729 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
|
1730 return NGX_DONE;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1734 r->zero_in_uri = 1;
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1738 r->method = NGX_HTTP_GET;
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 r->valid_unparsed_uri = 0;
|
|
|
1742
|
|
|
1743 ngx_http_internal_redirect(r, uri, &args);
|
|
|
1744 return NGX_DONE;
|
|
|
1745 }
|
|
|
1746
|
|
|
1747 part = &u->headers_in.headers.part;
|
|
|
1748 h = part->elts;
|
|
|
1749
|
|
|
1750 for (i = 0; /* void */; i++) {
|
|
|
1751
|
|
|
1752 if (i >= part->nelts) {
|
|
|
1753 if (part->next == NULL) {
|
|
|
1754 break;
|
|
|
1755 }
|
|
|
1756
|
|
|
1757 part = part->next;
|
|
|
1758 h = part->elts;
|
|
|
1759 i = 0;
|
|
|
1760 }
|
|
|
1761
|
|
|
1762 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1763 h[i].lowcase_key, h[i].key.len))
|
|
|
1764 {
|
|
|
1765 continue;
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1769 h[i].lowcase_key, h[i].key.len);
|
|
|
1770
|
|
|
1771 if (hh) {
|
|
|
1772 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1773 ngx_http_upstream_finalize_request(r, u,
|
|
|
1774 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1775 return NGX_DONE;
|
|
|
1776 }
|
|
|
1777
|
|
|
1778 continue;
|
|
|
1779 }
|
|
|
1780
|
|
|
1781 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1782 ngx_http_upstream_finalize_request(r, u,
|
|
|
1783 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1784 return NGX_DONE;
|
|
|
1785 }
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1789 r->headers_out.server->hash = 0;
|
|
|
1790 }
|
|
|
1791
|
|
|
1792 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1793 r->headers_out.date->hash = 0;
|
|
|
1794 }
|
|
|
1795
|
|
|
1796 r->headers_out.status = u->headers_in.status_n;
|
|
|
1797 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1798
|
|
|
1799 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1800
|
|
|
1801 if (r->headers_out.content_length_n != -1) {
|
|
|
1802 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1803
|
|
|
1804 } else {
|
|
|
1805 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1806 }
|
|
|
1807
|
|
|
1808 return NGX_OK;
|
|
|
1809 }
|
|
|
1810
|
|
|
1811
|
|
248
|
1812 static void
|
|
430
|
1813 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1814 ngx_http_upstream_t *u)
|
|
248
|
1815 {
|
|
430
|
1816 size_t size;
|
|
|
1817 ssize_t n;
|
|
|
1818 ngx_buf_t *b;
|
|
|
1819 ngx_event_t *rev;
|
|
|
1820 ngx_connection_t *c;
|
|
|
1821
|
|
|
1822 c = u->peer.connection;
|
|
|
1823 rev = c->read;
|
|
248
|
1824
|
|
|
1825 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1826 "http upstream process body on memory");
|
|
|
1827
|
|
|
1828 if (rev->timedout) {
|
|
|
1829 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1830 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1831 return;
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 b = &u->buffer;
|
|
|
1835
|
|
|
1836 for ( ;; ) {
|
|
|
1837
|
|
|
1838 size = b->end - b->last;
|
|
|
1839
|
|
|
1840 if (size == 0) {
|
|
|
1841 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1842 "upstream buffer is too small to read repsonse");
|
|
|
1843 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1844 return;
|
|
|
1845 }
|
|
|
1846
|
|
|
1847 n = c->recv(c, b->last, size);
|
|
|
1848
|
|
|
1849 if (n == NGX_AGAIN) {
|
|
|
1850 break;
|
|
|
1851 }
|
|
|
1852
|
|
|
1853 if (n == 0 || n == NGX_ERROR) {
|
|
|
1854 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1855 return;
|
|
|
1856 }
|
|
|
1857
|
|
430
|
1858 u->state->response_length += n;
|
|
|
1859
|
|
248
|
1860 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1861 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1862 return;
|
|
|
1863 }
|
|
|
1864
|
|
|
1865 if (!rev->ready) {
|
|
|
1866 break;
|
|
|
1867 }
|
|
|
1868 }
|
|
|
1869
|
|
430
|
1870 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1871 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1872 return;
|
|
|
1873 }
|
|
|
1874
|
|
|
1875 if (rev->active) {
|
|
|
1876 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1877
|
|
|
1878 } else if (rev->timer_set) {
|
|
|
1879 ngx_del_timer(rev);
|
|
|
1880 }
|
|
230
|
1881 }
|
|
|
1882
|
|
|
1883
|
|
|
1884 static void
|
|
|
1885 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1886 {
|
|
|
1887 int tcp_nodelay;
|
|
430
|
1888 ssize_t n;
|
|
230
|
1889 ngx_int_t rc;
|
|
|
1890 ngx_event_pipe_t *p;
|
|
|
1891 ngx_connection_t *c;
|
|
|
1892 ngx_http_core_loc_conf_t *clcf;
|
|
|
1893
|
|
58
|
1894 rc = ngx_http_send_header(r);
|
|
28
|
1895
|
|
480
|
1896 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1897 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1898 return;
|
|
|
1899 }
|
|
|
1900
|
|
480
|
1901 c = r->connection;
|
|
|
1902
|
|
|
1903 if (r->header_only) {
|
|
|
1904
|
|
|
1905 if (u->cacheable || u->store) {
|
|
|
1906
|
|
|
1907 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
1908 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1909 ngx_shutdown_socket_n " failed");
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 r->read_event_handler = ngx_http_request_empty_handler;
|
|
|
1913 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
1914 c->error = 1;
|
|
|
1915
|
|
|
1916 } else {
|
|
|
1917 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1918 return;
|
|
|
1919 }
|
|
|
1920 }
|
|
|
1921
|
|
28
|
1922 u->header_sent = 1;
|
|
|
1923
|
|
122
|
1924 if (r->request_body && r->request_body->temp_file) {
|
|
464
|
1925 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
|
1926 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1927 }
|
|
|
1928
|
|
130
|
1929 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1930
|
|
198
|
1931 if (!u->buffering) {
|
|
130
|
1932
|
|
|
1933 if (u->input_filter == NULL) {
|
|
|
1934 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1935 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1936 u->input_filter_ctx = r;
|
|
|
1937 }
|
|
|
1938
|
|
428
|
1939 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
1940 r->write_event_handler =
|
|
|
1941 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1942
|
|
|
1943 r->limit_rate = 0;
|
|
|
1944
|
|
|
1945 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1946 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1947 return;
|
|
|
1948 }
|
|
|
1949
|
|
132
|
1950 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1951 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1952
|
|
|
1953 tcp_nodelay = 1;
|
|
|
1954
|
|
|
1955 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1956 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1957 {
|
|
|
1958 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1959 "setsockopt(TCP_NODELAY) failed");
|
|
|
1960 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1961 return;
|
|
|
1962 }
|
|
|
1963
|
|
|
1964 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1965 }
|
|
|
1966
|
|
430
|
1967 n = u->buffer.last - u->buffer.pos;
|
|
|
1968
|
|
|
1969 if (n) {
|
|
130
|
1970 u->buffer.last = u->buffer.pos;
|
|
|
1971
|
|
430
|
1972 u->state->response_length += n;
|
|
|
1973
|
|
|
1974 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
1975 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1976 return;
|
|
|
1977 }
|
|
|
1978
|
|
428
|
1979 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
1980
|
|
|
1981 } else {
|
|
|
1982 u->buffer.pos = u->buffer.start;
|
|
|
1983 u->buffer.last = u->buffer.start;
|
|
|
1984
|
|
|
1985 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1986 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1987 return;
|
|
|
1988 }
|
|
336
|
1989
|
|
|
1990 if (u->peer.connection->read->ready) {
|
|
430
|
1991 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
1992 }
|
|
130
|
1993 }
|
|
|
1994
|
|
|
1995 return;
|
|
|
1996 }
|
|
|
1997
|
|
28
|
1998 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1999
|
|
464
|
2000 #if (NGX_HTTP_CACHE)
|
|
|
2001
|
|
|
2002 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
|
2003 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
|
2004 r->cache->file.fd = NGX_INVALID_FILE;
|
|
28
|
2005 }
|
|
|
2006
|
|
340
|
2007 if (u->cacheable) {
|
|
464
|
2008 time_t now, valid;
|
|
|
2009
|
|
472
|
2010 now = ngx_time();
|
|
|
2011
|
|
|
2012 valid = r->cache->valid_sec;
|
|
|
2013
|
|
|
2014 if (valid == 0) {
|
|
|
2015 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
|
2016 u->headers_in.status_n);
|
|
|
2017 if (valid) {
|
|
|
2018 r->cache->valid_sec = now + valid;
|
|
|
2019 }
|
|
|
2020 }
|
|
|
2021
|
|
464
|
2022 if (valid) {
|
|
|
2023 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
|
2024 r->cache->date = now;
|
|
|
2025 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
|
2026
|
|
|
2027 if (r->headers_out.content_length_n != -1) {
|
|
|
2028 r->cache->length = r->cache->body_start
|
|
|
2029 + r->headers_out.content_length_n;
|
|
|
2030 }
|
|
|
2031
|
|
|
2032 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
|
2033
|
|
|
2034 } else {
|
|
|
2035 u->cacheable = 0;
|
|
480
|
2036 r->headers_out.last_modified_time = -1;
|
|
464
|
2037 }
|
|
28
|
2038 }
|
|
|
2039
|
|
478
|
2040 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2041 "http cacheable: %d", u->cacheable);
|
|
|
2042
|
|
28
|
2043 #endif
|
|
|
2044
|
|
130
|
2045 p = u->pipe;
|
|
28
|
2046
|
|
|
2047 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
2048 p->output_ctx = r;
|
|
|
2049 p->tag = u->output.tag;
|
|
126
|
2050 p->bufs = u->conf->bufs;
|
|
28
|
2051 p->busy_size = u->conf->busy_buffers_size;
|
|
|
2052 p->upstream = u->peer.connection;
|
|
132
|
2053 p->downstream = c;
|
|
28
|
2054 p->pool = r->pool;
|
|
132
|
2055 p->log = c->log;
|
|
126
|
2056
|
|
340
|
2057 p->cacheable = u->cacheable || u->store;
|
|
28
|
2058
|
|
50
|
2059 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2060 if (p->temp_file == NULL) {
|
|
28
|
2061 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2062 return;
|
|
|
2063 }
|
|
|
2064
|
|
|
2065 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
2066 p->temp_file->file.log = c->log;
|
|
28
|
2067 p->temp_file->path = u->conf->temp_path;
|
|
|
2068 p->temp_file->pool = r->pool;
|
|
126
|
2069
|
|
464
|
2070 if (p->cacheable) {
|
|
28
|
2071 p->temp_file->persistent = 1;
|
|
318
|
2072
|
|
28
|
2073 } else {
|
|
216
|
2074 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
2075 p->temp_file->warn = "an upstream response is buffered "
|
|
|
2076 "to a temporary file";
|
|
|
2077 }
|
|
|
2078
|
|
|
2079 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
2080 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
2081
|
|
50
|
2082 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
2083 if (p->preread_bufs == NULL) {
|
|
28
|
2084 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2085 return;
|
|
|
2086 }
|
|
318
|
2087
|
|
130
|
2088 p->preread_bufs->buf = &u->buffer;
|
|
28
|
2089 p->preread_bufs->next = NULL;
|
|
130
|
2090 u->buffer.recycled = 1;
|
|
|
2091
|
|
|
2092 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
2093
|
|
340
|
2094 if (u->cacheable) {
|
|
318
|
2095
|
|
28
|
2096 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
2097 if (p->buf_to_file == NULL) {
|
|
|
2098 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2099 return;
|
|
|
2100 }
|
|
318
|
2101
|
|
130
|
2102 p->buf_to_file->pos = u->buffer.start;
|
|
|
2103 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
2104 p->buf_to_file->temporary = 1;
|
|
|
2105 }
|
|
|
2106
|
|
|
2107 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
2108 /* the posted aio operation may currupt a shadow buffer */
|
|
|
2109 p->single_buf = 1;
|
|
|
2110 }
|
|
|
2111
|
|
|
2112 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
2113 p->free_bufs = 1;
|
|
|
2114
|
|
|
2115 /*
|
|
130
|
2116 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
2117 * as though these bytes were read
|
|
|
2118 */
|
|
130
|
2119 u->buffer.last = u->buffer.pos;
|
|
28
|
2120
|
|
|
2121 if (u->conf->cyclic_temp_file) {
|
|
|
2122
|
|
|
2123 /*
|
|
|
2124 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
2125 * because the writing a new data may interfere with sendfile()
|
|
|
2126 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
2127 */
|
|
|
2128
|
|
|
2129 p->cyclic_temp_file = 1;
|
|
132
|
2130 c->sendfile = 0;
|
|
28
|
2131
|
|
|
2132 } else {
|
|
|
2133 p->cyclic_temp_file = 0;
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 p->read_timeout = u->conf->read_timeout;
|
|
|
2137 p->send_timeout = clcf->send_timeout;
|
|
|
2138 p->send_lowat = clcf->send_lowat;
|
|
|
2139
|
|
428
|
2140 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
2141 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
2142
|
|
430
|
2143 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
2144 }
|
|
|
2145
|
|
|
2146
|
|
36
|
2147 static void
|
|
130
|
2148 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
2149 {
|
|
428
|
2150 ngx_event_t *wev;
|
|
|
2151 ngx_connection_t *c;
|
|
|
2152 ngx_http_upstream_t *u;
|
|
|
2153
|
|
|
2154 c = r->connection;
|
|
|
2155 u = r->upstream;
|
|
|
2156 wev = c->write;
|
|
|
2157
|
|
|
2158 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2159 "http upstream process non buffered downstream");
|
|
|
2160
|
|
|
2161 c->log->action = "sending to client";
|
|
|
2162
|
|
|
2163 if (wev->timedout) {
|
|
|
2164 c->timedout = 1;
|
|
|
2165 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
2166 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2167 return;
|
|
|
2168 }
|
|
|
2169
|
|
|
2170 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
2171 }
|
|
|
2172
|
|
|
2173
|
|
|
2174 static void
|
|
430
|
2175 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
2176 ngx_http_upstream_t *u)
|
|
428
|
2177 {
|
|
430
|
2178 ngx_connection_t *c;
|
|
|
2179
|
|
|
2180 c = u->peer.connection;
|
|
428
|
2181
|
|
|
2182 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2183 "http upstream process non buffered upstream");
|
|
|
2184
|
|
|
2185 c->log->action = "reading upstream";
|
|
|
2186
|
|
430
|
2187 if (c->read->timedout) {
|
|
428
|
2188 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2189 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2190 return;
|
|
|
2191 }
|
|
|
2192
|
|
|
2193 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
2194 }
|
|
|
2195
|
|
|
2196
|
|
|
2197 static void
|
|
|
2198 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
2199 ngx_uint_t do_write)
|
|
130
|
2200 {
|
|
|
2201 size_t size;
|
|
|
2202 ssize_t n;
|
|
|
2203 ngx_buf_t *b;
|
|
132
|
2204 ngx_int_t rc;
|
|
428
|
2205 ngx_connection_t *downstream, *upstream;
|
|
130
|
2206 ngx_http_upstream_t *u;
|
|
|
2207 ngx_http_core_loc_conf_t *clcf;
|
|
|
2208
|
|
244
|
2209 u = r->upstream;
|
|
260
|
2210 downstream = r->connection;
|
|
|
2211 upstream = u->peer.connection;
|
|
130
|
2212
|
|
|
2213 b = &u->buffer;
|
|
|
2214
|
|
428
|
2215 do_write = do_write || u->length == 0;
|
|
130
|
2216
|
|
|
2217 for ( ;; ) {
|
|
|
2218
|
|
|
2219 if (do_write) {
|
|
|
2220
|
|
|
2221 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
2222 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
2223
|
|
260
|
2224 if (downstream->destroyed) {
|
|
132
|
2225 return;
|
|
|
2226 }
|
|
|
2227
|
|
|
2228 if (rc == NGX_ERROR) {
|
|
130
|
2229 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2230 return;
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
2234 &u->out_bufs, u->output.tag);
|
|
|
2235 }
|
|
|
2236
|
|
|
2237 if (u->busy_bufs == NULL) {
|
|
|
2238
|
|
|
2239 if (u->length == 0
|
|
260
|
2240 || upstream->read->eof
|
|
|
2241 || upstream->read->error)
|
|
130
|
2242 {
|
|
|
2243 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2244 return;
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 b->pos = b->start;
|
|
|
2248 b->last = b->start;
|
|
|
2249 }
|
|
|
2250 }
|
|
|
2251
|
|
|
2252 size = b->end - b->last;
|
|
|
2253
|
|
|
2254 if (size > u->length) {
|
|
|
2255 size = u->length;
|
|
|
2256 }
|
|
|
2257
|
|
260
|
2258 if (size && upstream->read->ready) {
|
|
|
2259
|
|
|
2260 n = upstream->recv(upstream, b->last, size);
|
|
130
|
2261
|
|
|
2262 if (n == NGX_AGAIN) {
|
|
|
2263 break;
|
|
|
2264 }
|
|
|
2265
|
|
|
2266 if (n > 0) {
|
|
430
|
2267 u->state->response_length += n;
|
|
|
2268
|
|
130
|
2269 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
2270 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2271 return;
|
|
|
2272 }
|
|
|
2273 }
|
|
|
2274
|
|
|
2275 do_write = 1;
|
|
|
2276
|
|
|
2277 continue;
|
|
|
2278 }
|
|
|
2279
|
|
|
2280 break;
|
|
|
2281 }
|
|
|
2282
|
|
428
|
2283 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2284
|
|
260
|
2285 if (downstream->data == r) {
|
|
|
2286 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
2287 != NGX_OK)
|
|
132
|
2288 {
|
|
|
2289 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2290 return;
|
|
|
2291 }
|
|
130
|
2292 }
|
|
|
2293
|
|
276
|
2294 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2295 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2296
|
|
|
2297 } else if (downstream->write->timer_set) {
|
|
|
2298 ngx_del_timer(downstream->write);
|
|
130
|
2299 }
|
|
|
2300
|
|
426
|
2301 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2302 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2303 return;
|
|
|
2304 }
|
|
|
2305
|
|
276
|
2306 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2307 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2308
|
|
|
2309 } else if (upstream->read->timer_set) {
|
|
|
2310 ngx_del_timer(upstream->read);
|
|
130
|
2311 }
|
|
|
2312 }
|
|
|
2313
|
|
|
2314
|
|
|
2315 static ngx_int_t
|
|
|
2316 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2317 {
|
|
|
2318 return NGX_OK;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321
|
|
|
2322 static ngx_int_t
|
|
|
2323 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2324 {
|
|
|
2325 ngx_http_request_t *r = data;
|
|
|
2326
|
|
|
2327 ngx_buf_t *b;
|
|
|
2328 ngx_chain_t *cl, **ll;
|
|
|
2329 ngx_http_upstream_t *u;
|
|
|
2330
|
|
|
2331 u = r->upstream;
|
|
|
2332
|
|
|
2333 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2334 ll = &cl->next;
|
|
|
2335 }
|
|
|
2336
|
|
|
2337 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2338 if (cl == NULL) {
|
|
|
2339 return NGX_ERROR;
|
|
|
2340 }
|
|
|
2341
|
|
|
2342 *ll = cl;
|
|
|
2343
|
|
|
2344 cl->buf->flush = 1;
|
|
|
2345 cl->buf->memory = 1;
|
|
|
2346
|
|
|
2347 b = &u->buffer;
|
|
|
2348
|
|
|
2349 cl->buf->pos = b->last;
|
|
|
2350 b->last += bytes;
|
|
|
2351 cl->buf->last = b->last;
|
|
366
|
2352 cl->buf->tag = u->output.tag;
|
|
130
|
2353
|
|
|
2354 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2355 return NGX_OK;
|
|
|
2356 }
|
|
|
2357
|
|
|
2358 u->length -= bytes;
|
|
|
2359
|
|
|
2360 return NGX_OK;
|
|
|
2361 }
|
|
|
2362
|
|
|
2363
|
|
|
2364 static void
|
|
58
|
2365 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2366 {
|
|
428
|
2367 ngx_event_t *wev;
|
|
|
2368 ngx_connection_t *c;
|
|
58
|
2369 ngx_event_pipe_t *p;
|
|
28
|
2370 ngx_http_upstream_t *u;
|
|
|
2371
|
|
428
|
2372 c = r->connection;
|
|
28
|
2373 u = r->upstream;
|
|
130
|
2374 p = u->pipe;
|
|
428
|
2375 wev = c->write;
|
|
|
2376
|
|
|
2377 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2378 "http upstream process downstream");
|
|
|
2379
|
|
|
2380 c->log->action = "sending to client";
|
|
|
2381
|
|
|
2382 if (wev->timedout) {
|
|
|
2383
|
|
|
2384 if (wev->delayed) {
|
|
|
2385
|
|
|
2386 wev->timedout = 0;
|
|
|
2387 wev->delayed = 0;
|
|
|
2388
|
|
|
2389 if (!wev->ready) {
|
|
|
2390 ngx_add_timer(wev, p->send_timeout);
|
|
|
2391
|
|
|
2392 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2393 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2394 }
|
|
|
2395
|
|
|
2396 return;
|
|
|
2397 }
|
|
|
2398
|
|
|
2399 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2400
|
|
|
2401 if (c->destroyed) {
|
|
76
|
2402 return;
|
|
|
2403 }
|
|
|
2404
|
|
428
|
2405 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2406 return;
|
|
76
|
2407 }
|
|
28
|
2408
|
|
|
2409 } else {
|
|
428
|
2410 p->downstream_error = 1;
|
|
|
2411 c->timedout = 1;
|
|
|
2412 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2413 }
|
|
|
2414
|
|
|
2415 } else {
|
|
428
|
2416
|
|
|
2417 if (wev->delayed) {
|
|
|
2418
|
|
76
|
2419 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2420 "http downstream delayed");
|
|
|
2421
|
|
428
|
2422 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2423 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2424 }
|
|
|
2425
|
|
|
2426 return;
|
|
|
2427 }
|
|
|
2428
|
|
428
|
2429 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
|
2430
|
|
|
2431 if (c->destroyed) {
|
|
132
|
2432 return;
|
|
|
2433 }
|
|
|
2434
|
|
28
|
2435 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2436 return;
|
|
|
2437 }
|
|
|
2438 }
|
|
126
|
2439
|
|
428
|
2440 ngx_http_upstream_process_request(r);
|
|
|
2441 }
|
|
|
2442
|
|
|
2443
|
|
|
2444 static void
|
|
430
|
2445 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2446 ngx_http_upstream_t *u)
|
|
428
|
2447 {
|
|
430
|
2448 ngx_connection_t *c;
|
|
|
2449
|
|
|
2450 c = u->peer.connection;
|
|
428
|
2451
|
|
|
2452 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2453 "http upstream process upstream");
|
|
|
2454
|
|
|
2455 c->log->action = "reading upstream";
|
|
|
2456
|
|
430
|
2457 if (c->read->timedout) {
|
|
|
2458 u->pipe->upstream_error = 1;
|
|
428
|
2459 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2460
|
|
|
2461 } else {
|
|
|
2462 c = r->connection;
|
|
|
2463
|
|
430
|
2464 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
428
|
2465
|
|
|
2466 if (c->destroyed) {
|
|
|
2467 return;
|
|
|
2468 }
|
|
|
2469
|
|
|
2470 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2471 return;
|
|
|
2472 }
|
|
|
2473 }
|
|
|
2474
|
|
|
2475 ngx_http_upstream_process_request(r);
|
|
|
2476 }
|
|
|
2477
|
|
|
2478
|
|
|
2479 static void
|
|
|
2480 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2481 {
|
|
438
|
2482 ngx_uint_t del;
|
|
428
|
2483 ngx_temp_file_t *tf;
|
|
|
2484 ngx_event_pipe_t *p;
|
|
|
2485 ngx_http_upstream_t *u;
|
|
|
2486
|
|
|
2487 u = r->upstream;
|
|
|
2488 p = u->pipe;
|
|
|
2489
|
|
28
|
2490 if (u->peer.connection) {
|
|
|
2491
|
|
318
|
2492 if (u->store) {
|
|
|
2493
|
|
438
|
2494 del = p->upstream_error;
|
|
|
2495
|
|
364
|
2496 tf = u->pipe->temp_file;
|
|
|
2497
|
|
440
|
2498 if (p->upstream_eof || p->upstream_done) {
|
|
438
|
2499
|
|
|
2500 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2501 && (u->headers_in.content_length_n == -1
|
|
|
2502 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2503 {
|
|
|
2504 ngx_http_upstream_store(r, u);
|
|
|
2505
|
|
|
2506 } else {
|
|
|
2507 del = 1;
|
|
|
2508 }
|
|
|
2509 }
|
|
|
2510
|
|
|
2511 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
2512
|
|
364
|
2513 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2514
|
|
318
|
2515 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2516 ngx_delete_file_n " \"%s\" failed",
|
|
|
2517 u->pipe->temp_file->file.name.data);
|
|
|
2518 }
|
|
|
2519 }
|
|
|
2520 }
|
|
|
2521
|
|
464
|
2522 #if (NGX_HTTP_CACHE)
|
|
|
2523
|
|
|
2524 if (u->cacheable) {
|
|
|
2525
|
|
|
2526 if (p->upstream_done) {
|
|
|
2527 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2528
|
|
|
2529 } else if (p->upstream_eof) {
|
|
|
2530
|
|
|
2531 /* TODO: check length & update cache */
|
|
|
2532
|
|
|
2533 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2534
|
|
|
2535 } else if (p->upstream_error) {
|
|
|
2536 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2537 }
|
|
|
2538 }
|
|
|
2539
|
|
|
2540 #endif
|
|
|
2541
|
|
|
2542 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2543 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2544 "http upstream exit: %p", p->out);
|
|
28
|
2545 #if 0
|
|
|
2546 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2547 #endif
|
|
|
2548 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2549 return;
|
|
|
2550 }
|
|
|
2551 }
|
|
|
2552
|
|
|
2553 if (p->downstream_error) {
|
|
428
|
2554 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2555 "http upstream downstream error");
|
|
28
|
2556
|
|
482
|
2557 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
2558 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2559 }
|
|
|
2560 }
|
|
|
2561 }
|
|
|
2562
|
|
|
2563
|
|
36
|
2564 static void
|
|
318
|
2565 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2566 {
|
|
370
|
2567 size_t root;
|
|
|
2568 time_t lm;
|
|
|
2569 ngx_str_t path;
|
|
|
2570 ngx_temp_file_t *tf;
|
|
|
2571 ngx_ext_rename_file_t ext;
|
|
318
|
2572
|
|
358
|
2573 tf = u->pipe->temp_file;
|
|
|
2574
|
|
|
2575 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2576
|
|
|
2577 /* create file for empty 200 response */
|
|
|
2578
|
|
|
2579 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2580 if (tf == NULL) {
|
|
|
2581 return;
|
|
|
2582 }
|
|
|
2583
|
|
|
2584 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2585 tf->file.log = r->connection->log;
|
|
|
2586 tf->path = u->conf->temp_path;
|
|
|
2587 tf->pool = r->pool;
|
|
|
2588 tf->persistent = 1;
|
|
|
2589
|
|
|
2590 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2591 tf->persistent, tf->clean, tf->access)
|
|
|
2592 != NGX_OK)
|
|
|
2593 {
|
|
|
2594 return;
|
|
|
2595 }
|
|
|
2596
|
|
|
2597 u->pipe->temp_file = tf;
|
|
|
2598 }
|
|
|
2599
|
|
370
|
2600 ext.access = u->conf->store_access;
|
|
430
|
2601 ext.path_access = u->conf->store_access;
|
|
370
|
2602 ext.time = -1;
|
|
|
2603 ext.create_path = 1;
|
|
|
2604 ext.delete_file = 1;
|
|
430
|
2605 ext.log_rename_error = 1;
|
|
370
|
2606 ext.log = r->connection->log;
|
|
318
|
2607
|
|
356
|
2608 if (u->headers_in.last_modified) {
|
|
|
2609
|
|
370
|
2610 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2611 u->headers_in.last_modified->value.len);
|
|
318
|
2612
|
|
|
2613 if (lm != NGX_ERROR) {
|
|
370
|
2614 ext.time = lm;
|
|
|
2615 ext.fd = tf->file.fd;
|
|
318
|
2616 }
|
|
|
2617 }
|
|
|
2618
|
|
320
|
2619 if (u->conf->store_lengths == NULL) {
|
|
|
2620
|
|
|
2621 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2622
|
|
|
2623 } else {
|
|
|
2624 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2625 u->conf->store_values->elts)
|
|
|
2626 == NULL)
|
|
|
2627 {
|
|
|
2628 return;
|
|
|
2629 }
|
|
|
2630 }
|
|
318
|
2631
|
|
|
2632 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2633 "upstream stores \"%s\" to \"%s\"",
|
|
|
2634 tf->file.name.data, path.data);
|
|
|
2635
|
|
|
2636 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2637 }
|
|
|
2638
|
|
|
2639
|
|
|
2640 static void
|
|
430
|
2641 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2642 {
|
|
430
|
2643 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2644 "http upstream dummy handler");
|
|
|
2645 }
|
|
|
2646
|
|
|
2647
|
|
36
|
2648 static void
|
|
|
2649 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2650 ngx_uint_t ft_type)
|
|
28
|
2651 {
|
|
260
|
2652 ngx_uint_t status, state;
|
|
28
|
2653
|
|
|
2654 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2655 "http next upstream, %xi", ft_type);
|
|
28
|
2656
|
|
|
2657 #if 0
|
|
|
2658 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2659 #endif
|
|
|
2660
|
|
74
|
2661 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2662 state = NGX_PEER_NEXT;
|
|
74
|
2663 } else {
|
|
260
|
2664 state = NGX_PEER_FAILED;
|
|
28
|
2665 }
|
|
74
|
2666
|
|
326
|
2667 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2668 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2669 }
|
|
74
|
2670
|
|
28
|
2671 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2672 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2673 "upstream timed out");
|
|
|
2674 }
|
|
126
|
2675
|
|
28
|
2676 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2677 status = 0;
|
|
|
2678
|
|
|
2679 } else {
|
|
|
2680 switch(ft_type) {
|
|
|
2681
|
|
|
2682 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2683 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2684 break;
|
|
|
2685
|
|
|
2686 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2687 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2688 break;
|
|
|
2689
|
|
|
2690 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2691 status = NGX_HTTP_NOT_FOUND;
|
|
|
2692 break;
|
|
|
2693
|
|
|
2694 /*
|
|
|
2695 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2696 * never reach here
|
|
|
2697 */
|
|
|
2698
|
|
|
2699 default:
|
|
|
2700 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2701 }
|
|
|
2702 }
|
|
|
2703
|
|
132
|
2704 if (r->connection->error) {
|
|
28
|
2705 ngx_http_upstream_finalize_request(r, u,
|
|
|
2706 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2707 return;
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 if (status) {
|
|
|
2711 u->state->status = status;
|
|
|
2712
|
|
74
|
2713 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2714
|
|
|
2715 #if (NGX_HTTP_CACHE)
|
|
|
2716
|
|
502
|
2717 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
2718 && (u->conf->cache_use_stale & ft_type))
|
|
|
2719 {
|
|
486
|
2720 ngx_int_t rc;
|
|
|
2721
|
|
|
2722 rc = u->reinit_request(r);
|
|
|
2723
|
|
|
2724 if (rc == NGX_OK) {
|
|
502
|
2725 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
486
|
2726 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
2727 }
|
|
|
2728
|
|
|
2729 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
2730 return;
|
|
|
2731 }
|
|
|
2732 #endif
|
|
|
2733
|
|
|
2734 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2735 return;
|
|
|
2736 }
|
|
|
2737 }
|
|
|
2738
|
|
|
2739 if (u->peer.connection) {
|
|
|
2740 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2741 "close http upstream connection: %d",
|
|
|
2742 u->peer.connection->fd);
|
|
126
|
2743 #if (NGX_HTTP_SSL)
|
|
260
|
2744
|
|
126
|
2745 if (u->peer.connection->ssl) {
|
|
260
|
2746 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2747 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2748
|
|
|
2749 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2750 }
|
|
|
2751 #endif
|
|
260
|
2752
|
|
28
|
2753 ngx_close_connection(u->peer.connection);
|
|
|
2754 }
|
|
|
2755
|
|
|
2756 #if 0
|
|
|
2757 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2758 ngx_http_upstream_busy_lock(p);
|
|
|
2759 return;
|
|
|
2760 }
|
|
|
2761 #endif
|
|
|
2762
|
|
|
2763 ngx_http_upstream_connect(r, u);
|
|
|
2764 }
|
|
|
2765
|
|
|
2766
|
|
36
|
2767 static void
|
|
118
|
2768 ngx_http_upstream_cleanup(void *data)
|
|
|
2769 {
|
|
|
2770 ngx_http_request_t *r = data;
|
|
|
2771
|
|
356
|
2772 ngx_http_upstream_t *u;
|
|
|
2773
|
|
118
|
2774 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2775 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2776
|
|
356
|
2777 u = r->upstream;
|
|
|
2778
|
|
|
2779 if (u->resolved && u->resolved->ctx) {
|
|
|
2780 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2781 }
|
|
|
2782
|
|
356
|
2783 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2784 }
|
|
|
2785
|
|
|
2786
|
|
|
2787 static void
|
|
36
|
2788 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2789 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2790 {
|
|
262
|
2791 ngx_time_t *tp;
|
|
112
|
2792
|
|
32
|
2793 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2794 "finalize http upstream request: %i", rc);
|
|
28
|
2795
|
|
432
|
2796 if (u->cleanup) {
|
|
|
2797 *u->cleanup = NULL;
|
|
|
2798 }
|
|
118
|
2799
|
|
348
|
2800 if (u->state && u->state->response_sec) {
|
|
112
|
2801 tp = ngx_timeofday();
|
|
262
|
2802 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2803 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
430
|
2804
|
|
|
2805 if (u->pipe) {
|
|
|
2806 u->state->response_length = u->pipe->read_length;
|
|
|
2807 }
|
|
112
|
2808 }
|
|
|
2809
|
|
28
|
2810 u->finalize_request(r, rc);
|
|
|
2811
|
|
348
|
2812 if (u->peer.free) {
|
|
|
2813 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2814 }
|
|
260
|
2815
|
|
28
|
2816 if (u->peer.connection) {
|
|
260
|
2817
|
|
126
|
2818 #if (NGX_HTTP_SSL)
|
|
|
2819
|
|
|
2820 /* TODO: do not shutdown persistent connection */
|
|
|
2821
|
|
|
2822 if (u->peer.connection->ssl) {
|
|
260
|
2823
|
|
|
2824 /*
|
|
|
2825 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2826 * and do not wait its "close notify" shutdown alert.
|
|
|
2827 * It is acceptable according to the TLS standard.
|
|
|
2828 */
|
|
|
2829
|
|
|
2830 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2831
|
|
|
2832 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2833 }
|
|
|
2834 #endif
|
|
260
|
2835
|
|
|
2836 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2837 "close http upstream connection: %d",
|
|
|
2838 u->peer.connection->fd);
|
|
|
2839
|
|
28
|
2840 ngx_close_connection(u->peer.connection);
|
|
|
2841 }
|
|
|
2842
|
|
32
|
2843 u->peer.connection = NULL;
|
|
|
2844
|
|
130
|
2845 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2846 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2847 "http upstream temp fd: %d",
|
|
130
|
2848 u->pipe->temp_file->file.fd);
|
|
28
|
2849 }
|
|
|
2850
|
|
464
|
2851 #if (NGX_HTTP_CACHE)
|
|
|
2852
|
|
478
|
2853 if (u->cacheable) {
|
|
464
|
2854 time_t valid;
|
|
|
2855
|
|
28
|
2856 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2857 "http upstream cache fd: %d",
|
|
464
|
2858 r->cache->file.fd);
|
|
|
2859
|
|
|
2860 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
|
2861
|
|
|
2862 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
|
2863
|
|
|
2864 if (valid) {
|
|
|
2865 r->cache->valid_sec = ngx_time() + valid;
|
|
|
2866 r->cache->error = rc;
|
|
|
2867 }
|
|
|
2868 }
|
|
|
2869
|
|
|
2870 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2871 }
|
|
464
|
2872
|
|
28
|
2873 #endif
|
|
|
2874
|
|
478
|
2875 if (u->header_sent
|
|
|
2876 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
464
|
2877 {
|
|
|
2878 rc = 0;
|
|
|
2879 }
|
|
|
2880
|
|
64
|
2881 if (rc == NGX_DECLINED) {
|
|
|
2882 return;
|
|
|
2883 }
|
|
|
2884
|
|
32
|
2885 r->connection->log->action = "sending to client";
|
|
|
2886
|
|
426
|
2887 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2888 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2889 }
|
|
|
2890
|
|
|
2891 ngx_http_finalize_request(r, rc);
|
|
|
2892 }
|
|
|
2893
|
|
|
2894
|
|
58
|
2895 static ngx_int_t
|
|
|
2896 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2897 ngx_uint_t offset)
|
|
126
|
2898 {
|
|
58
|
2899 ngx_table_elt_t **ph;
|
|
126
|
2900
|
|
58
|
2901 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2902
|
|
|
2903 if (*ph == NULL) {
|
|
|
2904 *ph = h;
|
|
|
2905 }
|
|
|
2906
|
|
|
2907 return NGX_OK;
|
|
|
2908 }
|
|
|
2909
|
|
|
2910
|
|
|
2911 static ngx_int_t
|
|
472
|
2912 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2913 ngx_uint_t offset)
|
|
|
2914 {
|
|
|
2915 return NGX_OK;
|
|
|
2916 }
|
|
|
2917
|
|
|
2918
|
|
|
2919 static ngx_int_t
|
|
|
2920 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
|
58
|
2921 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2922 {
|
|
484
|
2923 ngx_array_t *pa;
|
|
|
2924 ngx_table_elt_t **ph;
|
|
|
2925 ngx_http_upstream_t *u;
|
|
|
2926
|
|
|
2927 u = r->upstream;
|
|
|
2928 pa = &u->headers_in.cache_control;
|
|
58
|
2929
|
|
|
2930 if (pa->elts == NULL) {
|
|
|
2931 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2932 {
|
|
|
2933 return NGX_ERROR;
|
|
|
2934 }
|
|
|
2935 }
|
|
|
2936
|
|
|
2937 ph = ngx_array_push(pa);
|
|
|
2938 if (ph == NULL) {
|
|
|
2939 return NGX_ERROR;
|
|
|
2940 }
|
|
|
2941
|
|
|
2942 *ph = h;
|
|
|
2943
|
|
480
|
2944 #if (NGX_HTTP_CACHE)
|
|
|
2945 {
|
|
|
2946 u_char *p, *last;
|
|
|
2947 ngx_int_t n;
|
|
|
2948
|
|
484
|
2949 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
|
2950 return NGX_OK;
|
|
|
2951 }
|
|
|
2952
|
|
472
|
2953 if (r->cache == NULL) {
|
|
|
2954 return NGX_OK;
|
|
|
2955 }
|
|
|
2956
|
|
|
2957 if (r->cache->valid_sec != 0) {
|
|
|
2958 return NGX_OK;
|
|
|
2959 }
|
|
|
2960
|
|
|
2961 last = h->value.data + h->value.len;
|
|
|
2962
|
|
|
2963 if (ngx_strlcasestrn(h->value.data, last, (u_char *) "no-cache", 8 - 1)
|
|
|
2964 != NULL)
|
|
|
2965 {
|
|
484
|
2966 u->cacheable = 0;
|
|
472
|
2967 return NGX_OK;
|
|
|
2968 }
|
|
|
2969
|
|
|
2970 p = ngx_strlcasestrn(h->value.data, last, (u_char *) "max-age=", 8 - 1);
|
|
|
2971
|
|
|
2972 if (p == NULL) {
|
|
|
2973 return NGX_OK;
|
|
|
2974 }
|
|
|
2975
|
|
|
2976 n = 0;
|
|
|
2977
|
|
|
2978 for (p += 8; p < last; p++) {
|
|
|
2979 if (*p == ';' || *p == ' ') {
|
|
|
2980 break;
|
|
|
2981 }
|
|
|
2982
|
|
|
2983 if (*p >= '0' && *p <= '9') {
|
|
|
2984 n = n * 10 + *p - '0';
|
|
|
2985 continue;
|
|
|
2986 }
|
|
|
2987
|
|
484
|
2988 u->cacheable = 0;
|
|
472
|
2989 return NGX_OK;
|
|
|
2990 }
|
|
|
2991
|
|
|
2992 if (n == 0) {
|
|
484
|
2993 u->cacheable = 0;
|
|
472
|
2994 return NGX_OK;
|
|
|
2995 }
|
|
|
2996
|
|
|
2997 r->cache->valid_sec = ngx_time() + n;
|
|
480
|
2998 }
|
|
|
2999 #endif
|
|
|
3000
|
|
58
|
3001 return NGX_OK;
|
|
|
3002 }
|
|
|
3003
|
|
|
3004
|
|
|
3005 static ngx_int_t
|
|
472
|
3006 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
58
|
3007 ngx_uint_t offset)
|
|
|
3008 {
|
|
484
|
3009 ngx_http_upstream_t *u;
|
|
|
3010
|
|
|
3011 u = r->upstream;
|
|
|
3012 u->headers_in.expires = h;
|
|
480
|
3013
|
|
|
3014 #if (NGX_HTTP_CACHE)
|
|
|
3015 {
|
|
472
|
3016 time_t expires;
|
|
|
3017
|
|
484
|
3018 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
|
3019 return NGX_OK;
|
|
|
3020 }
|
|
|
3021
|
|
472
|
3022 if (r->cache == NULL) {
|
|
|
3023 return NGX_OK;
|
|
|
3024 }
|
|
|
3025
|
|
|
3026 if (r->cache->valid_sec != 0) {
|
|
|
3027 return NGX_OK;
|
|
|
3028 }
|
|
|
3029
|
|
|
3030 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
|
3031
|
|
|
3032 if (expires == NGX_ERROR || expires < ngx_time()) {
|
|
484
|
3033 u->cacheable = 0;
|
|
472
|
3034 return NGX_OK;
|
|
|
3035 }
|
|
|
3036
|
|
|
3037 r->cache->valid_sec = expires;
|
|
480
|
3038 }
|
|
|
3039 #endif
|
|
472
|
3040
|
|
|
3041 return NGX_OK;
|
|
|
3042 }
|
|
|
3043
|
|
|
3044
|
|
|
3045 static ngx_int_t
|
|
|
3046 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
|
3047 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3048 {
|
|
484
|
3049 ngx_http_upstream_t *u;
|
|
|
3050
|
|
|
3051 u = r->upstream;
|
|
|
3052 u->headers_in.x_accel_expires = h;
|
|
480
|
3053
|
|
|
3054 #if (NGX_HTTP_CACHE)
|
|
|
3055 {
|
|
472
|
3056 u_char *p;
|
|
|
3057 size_t len;
|
|
|
3058 ngx_int_t n;
|
|
|
3059
|
|
484
|
3060 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
|
3061 return NGX_OK;
|
|
|
3062 }
|
|
|
3063
|
|
472
|
3064 if (r->cache == NULL) {
|
|
|
3065 return NGX_OK;
|
|
|
3066 }
|
|
|
3067
|
|
|
3068 len = h->value.len;
|
|
|
3069 p = h->value.data;
|
|
|
3070
|
|
|
3071 if (p[0] != '@') {
|
|
|
3072 n = ngx_atoi(p, len);
|
|
|
3073
|
|
|
3074 switch (n) {
|
|
|
3075 case 0:
|
|
484
|
3076 u->cacheable = 0;
|
|
472
|
3077 case NGX_ERROR:
|
|
|
3078 return NGX_OK;
|
|
|
3079
|
|
|
3080 default:
|
|
|
3081 r->cache->valid_sec = ngx_time() + n;
|
|
|
3082 return NGX_OK;
|
|
|
3083 }
|
|
|
3084 }
|
|
|
3085
|
|
|
3086 p++;
|
|
|
3087 len--;
|
|
|
3088
|
|
|
3089 n = ngx_atoi(p, len);
|
|
|
3090
|
|
|
3091 if (n != NGX_ERROR) {
|
|
|
3092 r->cache->valid_sec = n;
|
|
|
3093 }
|
|
480
|
3094 }
|
|
|
3095 #endif
|
|
472
|
3096
|
|
58
|
3097 return NGX_OK;
|
|
|
3098 }
|
|
|
3099
|
|
|
3100
|
|
|
3101 static ngx_int_t
|
|
76
|
3102 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3103 ngx_uint_t offset)
|
|
126
|
3104 {
|
|
76
|
3105 ngx_int_t n;
|
|
|
3106
|
|
|
3107 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
3108
|
|
|
3109 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
3110
|
|
|
3111 if (n != NGX_ERROR) {
|
|
|
3112 r->limit_rate = (size_t) n;
|
|
|
3113 }
|
|
|
3114
|
|
|
3115 return NGX_OK;
|
|
|
3116 }
|
|
|
3117
|
|
|
3118
|
|
|
3119 static ngx_int_t
|
|
198
|
3120 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3121 ngx_uint_t offset)
|
|
|
3122 {
|
|
|
3123 u_char c0, c1, c2;
|
|
|
3124
|
|
|
3125 if (r->upstream->conf->change_buffering) {
|
|
|
3126
|
|
|
3127 if (h->value.len == 2) {
|
|
|
3128 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3129 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3130
|
|
|
3131 if (c0 == 'n' && c1 == 'o') {
|
|
|
3132 r->upstream->buffering = 0;
|
|
|
3133 }
|
|
|
3134
|
|
|
3135 } else if (h->value.len == 3) {
|
|
|
3136 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3137 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3138 c2 = ngx_tolower(h->value.data[2]);
|
|
|
3139
|
|
|
3140 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
3141 r->upstream->buffering = 1;
|
|
|
3142 }
|
|
|
3143 }
|
|
|
3144 }
|
|
|
3145
|
|
|
3146 return NGX_OK;
|
|
|
3147 }
|
|
|
3148
|
|
|
3149
|
|
|
3150 static ngx_int_t
|
|
206
|
3151 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3152 ngx_uint_t offset)
|
|
|
3153 {
|
|
|
3154 r->headers_out.override_charset = &h->value;
|
|
|
3155
|
|
|
3156 return NGX_OK;
|
|
|
3157 }
|
|
|
3158
|
|
|
3159
|
|
|
3160 static ngx_int_t
|
|
58
|
3161 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3162 ngx_uint_t offset)
|
|
|
3163 {
|
|
122
|
3164 ngx_table_elt_t *ho, **ph;
|
|
58
|
3165
|
|
|
3166 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3167 if (ho == NULL) {
|
|
|
3168 return NGX_ERROR;
|
|
|
3169 }
|
|
|
3170
|
|
|
3171 *ho = *h;
|
|
|
3172
|
|
122
|
3173 if (offset) {
|
|
|
3174 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
3175 *ph = ho;
|
|
|
3176 }
|
|
|
3177
|
|
58
|
3178 return NGX_OK;
|
|
|
3179 }
|
|
|
3180
|
|
|
3181
|
|
|
3182 static ngx_int_t
|
|
|
3183 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
3184 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3185 {
|
|
|
3186 ngx_array_t *pa;
|
|
|
3187 ngx_table_elt_t *ho, **ph;
|
|
|
3188
|
|
|
3189 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
3190
|
|
|
3191 if (pa->elts == NULL) {
|
|
|
3192 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3193 {
|
|
|
3194 return NGX_ERROR;
|
|
|
3195 }
|
|
|
3196 }
|
|
|
3197
|
|
|
3198 ph = ngx_array_push(pa);
|
|
|
3199 if (ph == NULL) {
|
|
|
3200 return NGX_ERROR;
|
|
|
3201 }
|
|
|
3202
|
|
|
3203 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3204 if (ho == NULL) {
|
|
|
3205 return NGX_ERROR;
|
|
|
3206 }
|
|
|
3207
|
|
|
3208 *ho = *h;
|
|
|
3209 *ph = ho;
|
|
|
3210
|
|
|
3211 return NGX_OK;
|
|
|
3212 }
|
|
|
3213
|
|
|
3214
|
|
|
3215 static ngx_int_t
|
|
|
3216 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3217 ngx_uint_t offset)
|
|
|
3218 {
|
|
206
|
3219 u_char *p, *last;
|
|
|
3220
|
|
|
3221 r->headers_out.content_type_len = h->value.len;
|
|
58
|
3222 r->headers_out.content_type = h->value;
|
|
494
|
3223 r->headers_out.content_type_lowcase = NULL;
|
|
58
|
3224
|
|
206
|
3225 for (p = h->value.data; *p; p++) {
|
|
|
3226
|
|
|
3227 if (*p != ';') {
|
|
|
3228 continue;
|
|
|
3229 }
|
|
|
3230
|
|
|
3231 last = p;
|
|
|
3232
|
|
|
3233 while (*++p == ' ') { /* void */ }
|
|
|
3234
|
|
372
|
3235 if (*p == '\0') {
|
|
|
3236 return NGX_OK;
|
|
|
3237 }
|
|
|
3238
|
|
286
|
3239 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
3240 continue;
|
|
|
3241 }
|
|
|
3242
|
|
|
3243 p += 8;
|
|
|
3244
|
|
|
3245 r->headers_out.content_type_len = last - h->value.data;
|
|
|
3246
|
|
410
|
3247 if (*p == '"') {
|
|
|
3248 p++;
|
|
|
3249 }
|
|
|
3250
|
|
|
3251 last = h->value.data + h->value.len;
|
|
|
3252
|
|
|
3253 if (*(last - 1) == '"') {
|
|
|
3254 last--;
|
|
|
3255 }
|
|
|
3256
|
|
|
3257 r->headers_out.charset.len = last - p;
|
|
206
|
3258 r->headers_out.charset.data = p;
|
|
292
|
3259
|
|
|
3260 return NGX_OK;
|
|
206
|
3261 }
|
|
|
3262
|
|
58
|
3263 return NGX_OK;
|
|
|
3264 }
|
|
|
3265
|
|
|
3266
|
|
|
3267 static ngx_int_t
|
|
|
3268 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3269 ngx_uint_t offset)
|
|
|
3270 {
|
|
|
3271 ngx_table_elt_t *ho;
|
|
|
3272
|
|
|
3273 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3274 if (ho == NULL) {
|
|
|
3275 return NGX_ERROR;
|
|
|
3276 }
|
|
|
3277
|
|
|
3278 *ho = *h;
|
|
|
3279
|
|
|
3280 r->headers_out.content_length = ho;
|
|
|
3281 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
3282
|
|
|
3283 return NGX_OK;
|
|
|
3284 }
|
|
|
3285
|
|
|
3286
|
|
|
3287 static ngx_int_t
|
|
464
|
3288 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3289 ngx_uint_t offset)
|
|
|
3290 {
|
|
|
3291 ngx_table_elt_t *ho;
|
|
|
3292
|
|
|
3293 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3294 if (ho == NULL) {
|
|
|
3295 return NGX_ERROR;
|
|
|
3296 }
|
|
|
3297
|
|
|
3298 *ho = *h;
|
|
|
3299
|
|
|
3300 #if (NGX_HTTP_CACHE)
|
|
|
3301
|
|
502
|
3302 if (r->upstream->cacheable) {
|
|
464
|
3303 r->headers_out.last_modified = ho;
|
|
|
3304 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
|
3305 h->value.len);
|
|
|
3306 }
|
|
|
3307
|
|
|
3308 #endif
|
|
|
3309
|
|
|
3310 return NGX_OK;
|
|
|
3311 }
|
|
|
3312
|
|
|
3313
|
|
|
3314 static ngx_int_t
|
|
58
|
3315 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3316 ngx_uint_t offset)
|
|
|
3317 {
|
|
|
3318 ngx_int_t rc;
|
|
|
3319 ngx_table_elt_t *ho;
|
|
|
3320
|
|
|
3321 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3322 if (ho == NULL) {
|
|
|
3323 return NGX_ERROR;
|
|
|
3324 }
|
|
|
3325
|
|
|
3326 *ho = *h;
|
|
|
3327
|
|
|
3328 if (r->upstream->rewrite_redirect) {
|
|
|
3329 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
3330
|
|
78
|
3331 if (rc == NGX_DECLINED) {
|
|
|
3332 return NGX_OK;
|
|
|
3333 }
|
|
|
3334
|
|
58
|
3335 if (rc == NGX_OK) {
|
|
|
3336 r->headers_out.location = ho;
|
|
|
3337
|
|
|
3338 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3339 "rewritten location: \"%V\"", &ho->value);
|
|
|
3340 }
|
|
|
3341
|
|
|
3342 return rc;
|
|
|
3343 }
|
|
|
3344
|
|
348
|
3345 if (ho->value.data[0] != '/') {
|
|
|
3346 r->headers_out.location = ho;
|
|
|
3347 }
|
|
|
3348
|
|
58
|
3349 /*
|
|
|
3350 * we do not set r->headers_out.location here to avoid the handling
|
|
|
3351 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
3352 */
|
|
|
3353
|
|
|
3354 return NGX_OK;
|
|
|
3355 }
|
|
|
3356
|
|
|
3357
|
|
|
3358 static ngx_int_t
|
|
|
3359 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3360 ngx_uint_t offset)
|
|
|
3361 {
|
|
|
3362 u_char *p;
|
|
|
3363 ngx_int_t rc;
|
|
|
3364 ngx_table_elt_t *ho;
|
|
|
3365
|
|
|
3366 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3367 if (ho == NULL) {
|
|
|
3368 return NGX_ERROR;
|
|
|
3369 }
|
|
|
3370
|
|
|
3371 *ho = *h;
|
|
|
3372
|
|
|
3373 if (r->upstream->rewrite_redirect) {
|
|
|
3374
|
|
340
|
3375 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
3376
|
|
|
3377 if (p) {
|
|
|
3378 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
3379
|
|
|
3380 } else {
|
|
|
3381 return NGX_OK;
|
|
|
3382 }
|
|
|
3383
|
|
78
|
3384 if (rc == NGX_DECLINED) {
|
|
|
3385 return NGX_OK;
|
|
|
3386 }
|
|
|
3387
|
|
58
|
3388 if (rc == NGX_OK) {
|
|
348
|
3389 r->headers_out.refresh = ho;
|
|
|
3390
|
|
58
|
3391 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3392 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
3393 }
|
|
|
3394
|
|
|
3395 return rc;
|
|
|
3396 }
|
|
|
3397
|
|
348
|
3398 r->headers_out.refresh = ho;
|
|
|
3399
|
|
58
|
3400 return NGX_OK;
|
|
|
3401 }
|
|
|
3402
|
|
|
3403
|
|
464
|
3404 static ngx_int_t
|
|
|
3405 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
3406 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3407 {
|
|
|
3408 ngx_table_elt_t *ho;
|
|
|
3409
|
|
|
3410 #if (NGX_HTTP_CACHE)
|
|
|
3411
|
|
|
3412 if (r->cached) {
|
|
|
3413 r->allow_ranges = 1;
|
|
|
3414 return NGX_OK;
|
|
|
3415
|
|
|
3416 }
|
|
|
3417
|
|
|
3418 #endif
|
|
|
3419
|
|
|
3420 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3421 if (ho == NULL) {
|
|
|
3422 return NGX_ERROR;
|
|
|
3423 }
|
|
|
3424
|
|
|
3425 *ho = *h;
|
|
|
3426
|
|
|
3427 return NGX_OK;
|
|
|
3428 }
|
|
|
3429
|
|
|
3430
|
|
58
|
3431 #if (NGX_HTTP_GZIP)
|
|
|
3432
|
|
|
3433 static ngx_int_t
|
|
|
3434 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
3435 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3436 {
|
|
|
3437 ngx_table_elt_t *ho;
|
|
|
3438
|
|
|
3439 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3440 if (ho == NULL) {
|
|
|
3441 return NGX_ERROR;
|
|
|
3442 }
|
|
|
3443
|
|
|
3444 *ho = *h;
|
|
|
3445
|
|
|
3446 r->headers_out.content_encoding = ho;
|
|
|
3447
|
|
|
3448 return NGX_OK;
|
|
|
3449 }
|
|
|
3450
|
|
|
3451 #endif
|
|
|
3452
|
|
|
3453
|
|
36
|
3454 static ngx_int_t
|
|
122
|
3455 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
3456 {
|
|
260
|
3457 ngx_http_variable_t *var, *v;
|
|
28
|
3458
|
|
122
|
3459 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
3460 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
3461 if (var == NULL) {
|
|
|
3462 return NGX_ERROR;
|
|
|
3463 }
|
|
|
3464
|
|
186
|
3465 var->get_handler = v->get_handler;
|
|
122
|
3466 var->data = v->data;
|
|
|
3467 }
|
|
|
3468
|
|
28
|
3469 return NGX_OK;
|
|
|
3470 }
|
|
58
|
3471
|
|
|
3472
|
|
122
|
3473 static ngx_int_t
|
|
298
|
3474 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
3475 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3476 {
|
|
|
3477 u_char *p;
|
|
|
3478 size_t len;
|
|
|
3479 ngx_uint_t i;
|
|
|
3480 ngx_http_upstream_state_t *state;
|
|
|
3481
|
|
|
3482 v->valid = 1;
|
|
340
|
3483 v->no_cacheable = 0;
|
|
298
|
3484 v->not_found = 0;
|
|
|
3485
|
|
|
3486 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3487 v->not_found = 1;
|
|
|
3488 return NGX_OK;
|
|
|
3489 }
|
|
|
3490
|
|
|
3491 len = 0;
|
|
|
3492 state = r->upstream_states->elts;
|
|
|
3493
|
|
|
3494 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
3495 if (state[i].peer) {
|
|
|
3496 len += state[i].peer->len + 2;
|
|
|
3497
|
|
|
3498 } else {
|
|
|
3499 len += 3;
|
|
|
3500 }
|
|
|
3501 }
|
|
|
3502
|
|
382
|
3503 p = ngx_pnalloc(r->pool, len);
|
|
298
|
3504 if (p == NULL) {
|
|
|
3505 return NGX_ERROR;
|
|
|
3506 }
|
|
|
3507
|
|
|
3508 v->data = p;
|
|
|
3509
|
|
|
3510 i = 0;
|
|
|
3511
|
|
|
3512 for ( ;; ) {
|
|
|
3513 if (state[i].peer) {
|
|
|
3514 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3515 }
|
|
|
3516
|
|
|
3517 if (++i == r->upstream_states->nelts) {
|
|
|
3518 break;
|
|
|
3519 }
|
|
|
3520
|
|
|
3521 if (state[i].peer) {
|
|
|
3522 *p++ = ',';
|
|
|
3523 *p++ = ' ';
|
|
|
3524
|
|
|
3525 } else {
|
|
|
3526 *p++ = ' ';
|
|
|
3527 *p++ = ':';
|
|
|
3528 *p++ = ' ';
|
|
|
3529
|
|
|
3530 if (++i == r->upstream_states->nelts) {
|
|
|
3531 break;
|
|
|
3532 }
|
|
|
3533
|
|
|
3534 continue;
|
|
|
3535 }
|
|
|
3536 }
|
|
|
3537
|
|
|
3538 v->len = p - v->data;
|
|
|
3539
|
|
|
3540 return NGX_OK;
|
|
|
3541 }
|
|
|
3542
|
|
|
3543
|
|
|
3544 static ngx_int_t
|
|
122
|
3545 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3546 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3547 {
|
|
|
3548 u_char *p;
|
|
|
3549 size_t len;
|
|
|
3550 ngx_uint_t i;
|
|
|
3551 ngx_http_upstream_state_t *state;
|
|
|
3552
|
|
|
3553 v->valid = 1;
|
|
340
|
3554 v->no_cacheable = 0;
|
|
122
|
3555 v->not_found = 0;
|
|
|
3556
|
|
296
|
3557 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3558 v->not_found = 1;
|
|
|
3559 return NGX_OK;
|
|
|
3560 }
|
|
|
3561
|
|
296
|
3562 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3563
|
|
382
|
3564 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3565 if (p == NULL) {
|
|
|
3566 return NGX_ERROR;
|
|
|
3567 }
|
|
|
3568
|
|
|
3569 v->data = p;
|
|
|
3570
|
|
|
3571 i = 0;
|
|
296
|
3572 state = r->upstream_states->elts;
|
|
122
|
3573
|
|
|
3574 for ( ;; ) {
|
|
296
|
3575 if (state[i].status) {
|
|
|
3576 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3577
|
|
|
3578 } else {
|
|
296
|
3579 *p++ = '-';
|
|
122
|
3580 }
|
|
|
3581
|
|
296
|
3582 if (++i == r->upstream_states->nelts) {
|
|
122
|
3583 break;
|
|
|
3584 }
|
|
|
3585
|
|
296
|
3586 if (state[i].peer) {
|
|
|
3587 *p++ = ',';
|
|
|
3588 *p++ = ' ';
|
|
|
3589
|
|
|
3590 } else {
|
|
|
3591 *p++ = ' ';
|
|
|
3592 *p++ = ':';
|
|
|
3593 *p++ = ' ';
|
|
|
3594
|
|
|
3595 if (++i == r->upstream_states->nelts) {
|
|
|
3596 break;
|
|
|
3597 }
|
|
|
3598
|
|
|
3599 continue;
|
|
|
3600 }
|
|
122
|
3601 }
|
|
|
3602
|
|
|
3603 v->len = p - v->data;
|
|
|
3604
|
|
|
3605 return NGX_OK;
|
|
|
3606 }
|
|
|
3607
|
|
|
3608
|
|
|
3609 static ngx_int_t
|
|
|
3610 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3611 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3612 {
|
|
|
3613 u_char *p;
|
|
|
3614 size_t len;
|
|
|
3615 ngx_uint_t i;
|
|
262
|
3616 ngx_msec_int_t ms;
|
|
122
|
3617 ngx_http_upstream_state_t *state;
|
|
|
3618
|
|
|
3619 v->valid = 1;
|
|
340
|
3620 v->no_cacheable = 0;
|
|
122
|
3621 v->not_found = 0;
|
|
|
3622
|
|
296
|
3623 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3624 v->not_found = 1;
|
|
|
3625 return NGX_OK;
|
|
|
3626 }
|
|
|
3627
|
|
296
|
3628 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3629
|
|
382
|
3630 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3631 if (p == NULL) {
|
|
|
3632 return NGX_ERROR;
|
|
|
3633 }
|
|
|
3634
|
|
|
3635 v->data = p;
|
|
|
3636
|
|
|
3637 i = 0;
|
|
296
|
3638 state = r->upstream_states->elts;
|
|
122
|
3639
|
|
|
3640 for ( ;; ) {
|
|
296
|
3641 if (state[i].status) {
|
|
346
|
3642 ms = (ngx_msec_int_t)
|
|
|
3643 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3644 ms = (ms >= 0) ? ms : 0;
|
|
|
3645 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3646
|
|
|
3647 } else {
|
|
|
3648 *p++ = '-';
|
|
122
|
3649 }
|
|
|
3650
|
|
296
|
3651 if (++i == r->upstream_states->nelts) {
|
|
122
|
3652 break;
|
|
|
3653 }
|
|
|
3654
|
|
296
|
3655 if (state[i].peer) {
|
|
|
3656 *p++ = ',';
|
|
|
3657 *p++ = ' ';
|
|
|
3658
|
|
|
3659 } else {
|
|
|
3660 *p++ = ' ';
|
|
|
3661 *p++ = ':';
|
|
|
3662 *p++ = ' ';
|
|
|
3663
|
|
|
3664 if (++i == r->upstream_states->nelts) {
|
|
|
3665 break;
|
|
|
3666 }
|
|
|
3667
|
|
|
3668 continue;
|
|
|
3669 }
|
|
122
|
3670 }
|
|
|
3671
|
|
|
3672 v->len = p - v->data;
|
|
|
3673
|
|
|
3674 return NGX_OK;
|
|
|
3675 }
|
|
|
3676
|
|
|
3677
|
|
430
|
3678 static ngx_int_t
|
|
|
3679 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3680 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3681 {
|
|
|
3682 u_char *p;
|
|
|
3683 size_t len;
|
|
|
3684 ngx_uint_t i;
|
|
|
3685 ngx_http_upstream_state_t *state;
|
|
|
3686
|
|
|
3687 v->valid = 1;
|
|
|
3688 v->no_cacheable = 0;
|
|
|
3689 v->not_found = 0;
|
|
|
3690
|
|
|
3691 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3692 v->not_found = 1;
|
|
|
3693 return NGX_OK;
|
|
|
3694 }
|
|
|
3695
|
|
|
3696 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3697
|
|
|
3698 p = ngx_pnalloc(r->pool, len);
|
|
|
3699 if (p == NULL) {
|
|
|
3700 return NGX_ERROR;
|
|
|
3701 }
|
|
|
3702
|
|
|
3703 v->data = p;
|
|
|
3704
|
|
|
3705 i = 0;
|
|
|
3706 state = r->upstream_states->elts;
|
|
|
3707
|
|
|
3708 for ( ;; ) {
|
|
|
3709 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3710
|
|
|
3711 if (++i == r->upstream_states->nelts) {
|
|
|
3712 break;
|
|
|
3713 }
|
|
|
3714
|
|
|
3715 if (state[i].peer) {
|
|
|
3716 *p++ = ',';
|
|
|
3717 *p++ = ' ';
|
|
|
3718
|
|
|
3719 } else {
|
|
|
3720 *p++ = ' ';
|
|
|
3721 *p++ = ':';
|
|
|
3722 *p++ = ' ';
|
|
|
3723
|
|
|
3724 if (++i == r->upstream_states->nelts) {
|
|
|
3725 break;
|
|
|
3726 }
|
|
|
3727
|
|
|
3728 continue;
|
|
|
3729 }
|
|
|
3730 }
|
|
|
3731
|
|
|
3732 v->len = p - v->data;
|
|
|
3733
|
|
|
3734 return NGX_OK;
|
|
|
3735 }
|
|
|
3736
|
|
|
3737
|
|
296
|
3738 ngx_int_t
|
|
|
3739 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3740 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3741 {
|
|
|
3742 if (r->upstream == NULL) {
|
|
|
3743 v->not_found = 1;
|
|
|
3744 return NGX_OK;
|
|
|
3745 }
|
|
|
3746
|
|
|
3747 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3748 &r->upstream->headers_in.headers.part,
|
|
|
3749 sizeof("upstream_http_") - 1);
|
|
|
3750 }
|
|
|
3751
|
|
|
3752
|
|
502
|
3753 #if (NGX_HTTP_CACHE)
|
|
|
3754
|
|
|
3755 ngx_int_t
|
|
|
3756 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
|
3757 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3758 {
|
|
|
3759 ngx_uint_t n;
|
|
|
3760
|
|
|
3761 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
|
3762 v->not_found = 1;
|
|
|
3763 return NGX_OK;
|
|
|
3764 }
|
|
|
3765
|
|
|
3766 n = r->upstream->cache_status - 1;
|
|
|
3767
|
|
|
3768 v->valid = 1;
|
|
|
3769 v->no_cacheable = 0;
|
|
|
3770 v->not_found = 0;
|
|
|
3771 v->len = ngx_http_cache_status[n].len;
|
|
|
3772 v->data = ngx_http_cache_status[n].data;
|
|
|
3773
|
|
|
3774 return NGX_OK;
|
|
|
3775 }
|
|
|
3776
|
|
|
3777 #endif
|
|
|
3778
|
|
|
3779
|
|
200
|
3780 static char *
|
|
|
3781 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3782 {
|
|
260
|
3783 char *rv;
|
|
|
3784 void *mconf;
|
|
|
3785 ngx_str_t *value;
|
|
|
3786 ngx_url_t u;
|
|
|
3787 ngx_uint_t m;
|
|
|
3788 ngx_conf_t pcf;
|
|
|
3789 ngx_http_module_t *module;
|
|
|
3790 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3791 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3792
|
|
|
3793 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3794
|
|
|
3795 value = cf->args->elts;
|
|
|
3796 u.host = value[1];
|
|
|
3797 u.no_resolve = 1;
|
|
|
3798
|
|
|
3799 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3800 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3801 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3802 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3803 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3804 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3805 if (uscf == NULL) {
|
|
|
3806 return NGX_CONF_ERROR;
|
|
|
3807 }
|
|
|
3808
|
|
200
|
3809
|
|
|
3810 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3811 if (ctx == NULL) {
|
|
|
3812 return NGX_CONF_ERROR;
|
|
|
3813 }
|
|
|
3814
|
|
260
|
3815 http_ctx = cf->ctx;
|
|
|
3816 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3817
|
|
|
3818 /* the upstream{}'s srv_conf */
|
|
|
3819
|
|
|
3820 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3821 if (ctx->srv_conf == NULL) {
|
|
|
3822 return NGX_CONF_ERROR;
|
|
|
3823 }
|
|
|
3824
|
|
|
3825 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3826
|
|
260
|
3827 uscf->srv_conf = ctx->srv_conf;
|
|
|
3828
|
|
200
|
3829
|
|
|
3830 /* the upstream{}'s loc_conf */
|
|
|
3831
|
|
|
3832 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3833 if (ctx->loc_conf == NULL) {
|
|
|
3834 return NGX_CONF_ERROR;
|
|
|
3835 }
|
|
|
3836
|
|
|
3837 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3838 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3839 continue;
|
|
|
3840 }
|
|
|
3841
|
|
|
3842 module = ngx_modules[m]->ctx;
|
|
|
3843
|
|
260
|
3844 if (module->create_srv_conf) {
|
|
|
3845 mconf = module->create_srv_conf(cf);
|
|
|
3846 if (mconf == NULL) {
|
|
|
3847 return NGX_CONF_ERROR;
|
|
|
3848 }
|
|
|
3849
|
|
|
3850 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3851 }
|
|
|
3852
|
|
200
|
3853 if (module->create_loc_conf) {
|
|
|
3854 mconf = module->create_loc_conf(cf);
|
|
|
3855 if (mconf == NULL) {
|
|
|
3856 return NGX_CONF_ERROR;
|
|
|
3857 }
|
|
|
3858
|
|
|
3859 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3860 }
|
|
|
3861 }
|
|
|
3862
|
|
|
3863
|
|
|
3864 /* parse inside upstream{} */
|
|
|
3865
|
|
|
3866 pcf = *cf;
|
|
|
3867 cf->ctx = ctx;
|
|
|
3868 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3869
|
|
|
3870 rv = ngx_conf_parse(cf, NULL);
|
|
|
3871
|
|
|
3872 *cf = pcf;
|
|
|
3873
|
|
|
3874 if (rv != NGX_CONF_OK) {
|
|
|
3875 return rv;
|
|
|
3876 }
|
|
|
3877
|
|
|
3878 if (uscf->servers == NULL) {
|
|
|
3879 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3880 "no servers are inside upstream");
|
|
|
3881 return NGX_CONF_ERROR;
|
|
|
3882 }
|
|
|
3883
|
|
|
3884 return rv;
|
|
|
3885 }
|
|
|
3886
|
|
|
3887
|
|
|
3888 static char *
|
|
|
3889 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3890 {
|
|
|
3891 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3892
|
|
260
|
3893 time_t fail_timeout;
|
|
|
3894 ngx_str_t *value, s;
|
|
|
3895 ngx_url_t u;
|
|
|
3896 ngx_int_t weight, max_fails;
|
|
|
3897 ngx_uint_t i;
|
|
|
3898 ngx_http_upstream_server_t *us;
|
|
200
|
3899
|
|
|
3900 if (uscf->servers == NULL) {
|
|
260
|
3901 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3902 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3903 if (uscf->servers == NULL) {
|
|
|
3904 return NGX_CONF_ERROR;
|
|
|
3905 }
|
|
|
3906 }
|
|
|
3907
|
|
260
|
3908 us = ngx_array_push(uscf->servers);
|
|
|
3909 if (us == NULL) {
|
|
200
|
3910 return NGX_CONF_ERROR;
|
|
|
3911 }
|
|
|
3912
|
|
260
|
3913 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3914
|
|
200
|
3915 value = cf->args->elts;
|
|
|
3916
|
|
|
3917 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3918
|
|
|
3919 u.url = value[1];
|
|
266
|
3920 u.default_port = 80;
|
|
200
|
3921
|
|
340
|
3922 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3923 if (u.err) {
|
|
|
3924 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3925 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3926 }
|
|
|
3927
|
|
|
3928 return NGX_CONF_ERROR;
|
|
|
3929 }
|
|
|
3930
|
|
212
|
3931 weight = 1;
|
|
260
|
3932 max_fails = 1;
|
|
|
3933 fail_timeout = 10;
|
|
|
3934
|
|
|
3935 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3936
|
|
|
3937 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3938
|
|
|
3939 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3940 goto invalid;
|
|
|
3941 }
|
|
|
3942
|
|
|
3943 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3944
|
|
|
3945 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3946 goto invalid;
|
|
|
3947 }
|
|
|
3948
|
|
260
|
3949 continue;
|
|
|
3950 }
|
|
|
3951
|
|
|
3952 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3953
|
|
|
3954 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3955 goto invalid;
|
|
|
3956 }
|
|
|
3957
|
|
|
3958 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3959
|
|
|
3960 if (max_fails == NGX_ERROR) {
|
|
|
3961 goto invalid;
|
|
|
3962 }
|
|
|
3963
|
|
|
3964 continue;
|
|
212
|
3965 }
|
|
260
|
3966
|
|
|
3967 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3968
|
|
|
3969 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3970 goto invalid;
|
|
|
3971 }
|
|
|
3972
|
|
|
3973 s.len = value[i].len - 13;
|
|
|
3974 s.data = &value[i].data[13];
|
|
|
3975
|
|
|
3976 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3977
|
|
372
|
3978 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3979 goto invalid;
|
|
|
3980 }
|
|
|
3981
|
|
|
3982 continue;
|
|
|
3983 }
|
|
|
3984
|
|
326
|
3985 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3986
|
|
|
3987 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3988 goto invalid;
|
|
|
3989 }
|
|
|
3990
|
|
|
3991 us->backup = 1;
|
|
|
3992
|
|
|
3993 continue;
|
|
|
3994 }
|
|
|
3995
|
|
260
|
3996 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3997
|
|
|
3998 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3999 goto invalid;
|
|
|
4000 }
|
|
|
4001
|
|
|
4002 us->down = 1;
|
|
|
4003
|
|
|
4004 continue;
|
|
|
4005 }
|
|
|
4006
|
|
|
4007 goto invalid;
|
|
212
|
4008 }
|
|
|
4009
|
|
260
|
4010 us->addrs = u.addrs;
|
|
|
4011 us->naddrs = u.naddrs;
|
|
|
4012 us->weight = weight;
|
|
|
4013 us->max_fails = max_fails;
|
|
|
4014 us->fail_timeout = fail_timeout;
|
|
200
|
4015
|
|
|
4016 return NGX_CONF_OK;
|
|
212
|
4017
|
|
|
4018 invalid:
|
|
|
4019
|
|
260
|
4020 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4021 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
4022
|
|
|
4023 return NGX_CONF_ERROR;
|
|
200
|
4024 }
|
|
|
4025
|
|
|
4026
|
|
|
4027 ngx_http_upstream_srv_conf_t *
|
|
260
|
4028 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
4029 {
|
|
|
4030 ngx_uint_t i;
|
|
260
|
4031 ngx_http_upstream_server_t *us;
|
|
200
|
4032 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
4033 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4034
|
|
260
|
4035 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
4036
|
|
340
|
4037 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
4038 if (u->err) {
|
|
|
4039 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4040 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
4041 }
|
|
|
4042
|
|
|
4043 return NULL;
|
|
|
4044 }
|
|
|
4045 }
|
|
|
4046
|
|
|
4047 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
4048
|
|
|
4049 uscfp = umcf->upstreams.elts;
|
|
|
4050
|
|
|
4051 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
4052
|
|
|
4053 if (uscfp[i]->host.len != u->host.len
|
|
260
|
4054 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
4055 != 0)
|
|
|
4056 {
|
|
200
|
4057 continue;
|
|
|
4058 }
|
|
|
4059
|
|
260
|
4060 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
4061 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
4062 {
|
|
260
|
4063 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4064 "duplicate upstream \"%V\"", &u->host);
|
|
|
4065 return NULL;
|
|
200
|
4066 }
|
|
260
|
4067
|
|
266
|
4068 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
4069 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
4070 "upstream \"%V\" may not have port %d",
|
|
|
4071 &u->host, u->port);
|
|
|
4072 return NULL;
|
|
|
4073 }
|
|
|
4074
|
|
|
4075 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
4076 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
4077 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
4078 &u->host, uscfp[i]->port,
|
|
336
|
4079 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
4080 return NULL;
|
|
|
4081 }
|
|
|
4082
|
|
|
4083 if (uscfp[i]->port != u->port) {
|
|
|
4084 continue;
|
|
260
|
4085 }
|
|
|
4086
|
|
324
|
4087 if (uscfp[i]->default_port && u->default_port
|
|
|
4088 && uscfp[i]->default_port != u->default_port)
|
|
|
4089 {
|
|
|
4090 continue;
|
|
|
4091 }
|
|
|
4092
|
|
260
|
4093 return uscfp[i];
|
|
200
|
4094 }
|
|
|
4095
|
|
|
4096 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
4097 if (uscf == NULL) {
|
|
|
4098 return NULL;
|
|
|
4099 }
|
|
|
4100
|
|
260
|
4101 uscf->flags = flags;
|
|
200
|
4102 uscf->host = u->host;
|
|
336
|
4103 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
4104 uscf->line = cf->conf_file->line;
|
|
266
|
4105 uscf->port = u->port;
|
|
|
4106 uscf->default_port = u->default_port;
|
|
260
|
4107
|
|
|
4108 if (u->naddrs == 1) {
|
|
|
4109 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
4110 sizeof(ngx_http_upstream_server_t));
|
|
|
4111 if (uscf->servers == NULL) {
|
|
|
4112 return NGX_CONF_ERROR;
|
|
|
4113 }
|
|
|
4114
|
|
|
4115 us = ngx_array_push(uscf->servers);
|
|
|
4116 if (us == NULL) {
|
|
|
4117 return NGX_CONF_ERROR;
|
|
|
4118 }
|
|
|
4119
|
|
|
4120 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4121
|
|
|
4122 us->addrs = u->addrs;
|
|
|
4123 us->naddrs = u->naddrs;
|
|
|
4124 }
|
|
200
|
4125
|
|
|
4126 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
4127 if (uscfp == NULL) {
|
|
|
4128 return NULL;
|
|
|
4129 }
|
|
|
4130
|
|
|
4131 *uscfp = uscf;
|
|
|
4132
|
|
|
4133 return uscf;
|
|
|
4134 }
|
|
|
4135
|
|
|
4136
|
|
356
|
4137 ngx_int_t
|
|
|
4138 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
4139 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
4140 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
4141 {
|
|
|
4142 ngx_str_t *h;
|
|
|
4143 ngx_uint_t i, j;
|
|
|
4144 ngx_array_t hide_headers;
|
|
|
4145 ngx_hash_key_t *hk;
|
|
|
4146
|
|
|
4147 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
4148 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
4149 {
|
|
|
4150 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
4151
|
|
498
|
4152 if (conf->hide_headers_hash.buckets
|
|
502
|
4153 #if (NGX_HTTP_CACHE)
|
|
|
4154 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
|
4155 #endif
|
|
|
4156 )
|
|
498
|
4157 {
|
|
356
|
4158 return NGX_OK;
|
|
|
4159 }
|
|
|
4160
|
|
|
4161 conf->hide_headers = prev->hide_headers;
|
|
|
4162 conf->pass_headers = prev->pass_headers;
|
|
|
4163
|
|
|
4164 } else {
|
|
|
4165 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4166 conf->hide_headers = prev->hide_headers;
|
|
|
4167 }
|
|
|
4168
|
|
|
4169 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4170 conf->pass_headers = prev->pass_headers;
|
|
|
4171 }
|
|
|
4172 }
|
|
|
4173
|
|
|
4174 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
4175 != NGX_OK)
|
|
|
4176 {
|
|
|
4177 return NGX_ERROR;
|
|
|
4178 }
|
|
|
4179
|
|
|
4180 for (h = default_hide_headers; h->len; h++) {
|
|
|
4181 hk = ngx_array_push(&hide_headers);
|
|
|
4182 if (hk == NULL) {
|
|
|
4183 return NGX_ERROR;
|
|
|
4184 }
|
|
|
4185
|
|
|
4186 hk->key = *h;
|
|
|
4187 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
4188 hk->value = (void *) 1;
|
|
|
4189 }
|
|
|
4190
|
|
|
4191 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4192
|
|
|
4193 h = conf->hide_headers->elts;
|
|
|
4194
|
|
|
4195 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
4196
|
|
|
4197 hk = hide_headers.elts;
|
|
|
4198
|
|
|
4199 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4200 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4201 goto exist;
|
|
|
4202 }
|
|
|
4203 }
|
|
|
4204
|
|
|
4205 hk = ngx_array_push(&hide_headers);
|
|
|
4206 if (hk == NULL) {
|
|
|
4207 return NGX_ERROR;
|
|
|
4208 }
|
|
|
4209
|
|
|
4210 hk->key = h[i];
|
|
|
4211 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
4212 hk->value = (void *) 1;
|
|
|
4213
|
|
|
4214 exist:
|
|
|
4215
|
|
|
4216 continue;
|
|
|
4217 }
|
|
|
4218 }
|
|
|
4219
|
|
|
4220 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4221
|
|
|
4222 h = conf->pass_headers->elts;
|
|
|
4223 hk = hide_headers.elts;
|
|
|
4224
|
|
|
4225 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
4226 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4227
|
|
|
4228 if (hk[j].key.data == NULL) {
|
|
|
4229 continue;
|
|
|
4230 }
|
|
|
4231
|
|
|
4232 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4233 hk[j].key.data = NULL;
|
|
|
4234 break;
|
|
|
4235 }
|
|
|
4236 }
|
|
|
4237 }
|
|
|
4238 }
|
|
|
4239
|
|
|
4240 hash->hash = &conf->hide_headers_hash;
|
|
|
4241 hash->key = ngx_hash_key_lc;
|
|
|
4242 hash->pool = cf->pool;
|
|
|
4243 hash->temp_pool = NULL;
|
|
|
4244
|
|
|
4245 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
4246 }
|
|
|
4247
|
|
|
4248
|
|
58
|
4249 static void *
|
|
|
4250 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
4251 {
|
|
|
4252 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4253
|
|
|
4254 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
4255 if (umcf == NULL) {
|
|
|
4256 return NULL;
|
|
|
4257 }
|
|
|
4258
|
|
200
|
4259 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
4260 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
4261 != NGX_OK)
|
|
|
4262 {
|
|
496
|
4263 return NULL;
|
|
200
|
4264 }
|
|
|
4265
|
|
58
|
4266 return umcf;
|
|
|
4267 }
|
|
|
4268
|
|
|
4269
|
|
|
4270 static char *
|
|
200
|
4271 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
4272 {
|
|
|
4273 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
4274
|
|
200
|
4275 ngx_uint_t i;
|
|
|
4276 ngx_array_t headers_in;
|
|
|
4277 ngx_hash_key_t *hk;
|
|
|
4278 ngx_hash_init_t hash;
|
|
260
|
4279 ngx_http_upstream_init_pt init;
|
|
200
|
4280 ngx_http_upstream_header_t *header;
|
|
|
4281 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
4282
|
|
|
4283 uscfp = umcf->upstreams.elts;
|
|
|
4284
|
|
|
4285 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
4286
|
|
|
4287 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
4288 ngx_http_upstream_init_round_robin;
|
|
|
4289
|
|
|
4290 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
4291 return NGX_CONF_ERROR;
|
|
|
4292 }
|
|
|
4293 }
|
|
198
|
4294
|
|
212
|
4295
|
|
260
|
4296 /* upstream_headers_in_hash */
|
|
|
4297
|
|
198
|
4298 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
4299 != NGX_OK)
|
|
58
|
4300 {
|
|
|
4301 return NGX_CONF_ERROR;
|
|
|
4302 }
|
|
|
4303
|
|
198
|
4304 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
4305 hk = ngx_array_push(&headers_in);
|
|
|
4306 if (hk == NULL) {
|
|
|
4307 return NGX_CONF_ERROR;
|
|
|
4308 }
|
|
|
4309
|
|
|
4310 hk->key = header->name;
|
|
|
4311 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
4312 hk->value = header;
|
|
|
4313 }
|
|
|
4314
|
|
|
4315 hash.hash = &umcf->headers_in_hash;
|
|
|
4316 hash.key = ngx_hash_key_lc;
|
|
|
4317 hash.max_size = 512;
|
|
244
|
4318 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
4319 hash.name = "upstream_headers_in_hash";
|
|
|
4320 hash.pool = cf->pool;
|
|
|
4321 hash.temp_pool = NULL;
|
|
|
4322
|
|
|
4323 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
4324 return NGX_CONF_ERROR;
|
|
|
4325 }
|
|
58
|
4326
|
|
|
4327 return NGX_CONF_OK;
|
|
|
4328 }
|
