Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream.c @ 1176:302635fc9a87
release-0.5.18 tag
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 19 Apr 2007 18:16:54 +0000 |
parents | 4d0d12446c3b |
children | ea5ecb1aae88 |
rev | line source |
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479 | 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 | |
509 | 12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r); |
13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r); | |
14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r, | |
15 ngx_event_t *ev); | |
479 | 16 static void ngx_http_upstream_connect(ngx_http_request_t *r, |
487 | 17 ngx_http_upstream_t *u); |
509 | 18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r, |
487 | 19 ngx_http_upstream_t *u); |
479 | 20 static void ngx_http_upstream_send_request(ngx_http_request_t *r, |
487 | 21 ngx_http_upstream_t *u); |
479 | 22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev); |
23 static void ngx_http_upstream_process_header(ngx_event_t *rev); | |
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24 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c); |
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25 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev); |
479 | 26 static void ngx_http_upstream_send_response(ngx_http_request_t *r, |
487 | 27 ngx_http_upstream_t *u); |
581 | 28 static void |
29 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r); | |
30 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev); | |
31 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data); | |
32 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data, | |
33 ssize_t bytes); | |
509 | 34 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r); |
479 | 35 static void ngx_http_upstream_process_body(ngx_event_t *ev); |
36 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev); | |
37 static void ngx_http_upstream_next(ngx_http_request_t *r, | |
487 | 38 ngx_http_upstream_t *u, ngx_uint_t ft_type); |
569 | 39 static void ngx_http_upstream_cleanup(void *data); |
479 | 40 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
487 | 41 ngx_http_upstream_t *u, ngx_int_t rc); |
479 | 42 |
509 | 43 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r, |
44 ngx_table_elt_t *h, ngx_uint_t offset); | |
45 static ngx_int_t | |
46 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
47 ngx_table_elt_t *h, ngx_uint_t offset); | |
48 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, | |
49 ngx_table_elt_t *h, ngx_uint_t offset); | |
527 | 50 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, |
51 ngx_table_elt_t *h, ngx_uint_t offset); | |
649 | 52 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r, |
509 | 53 ngx_table_elt_t *h, ngx_uint_t offset); |
657 | 54 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r, |
55 ngx_table_elt_t *h, ngx_uint_t offset); | |
649 | 56 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r, |
509 | 57 ngx_table_elt_t *h, ngx_uint_t offset); |
58 static ngx_int_t | |
59 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
60 ngx_table_elt_t *h, ngx_uint_t offset); | |
61 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r, | |
62 ngx_table_elt_t *h, ngx_uint_t offset); | |
63 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r, | |
64 ngx_table_elt_t *h, ngx_uint_t offset); | |
65 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r, | |
66 ngx_table_elt_t *h, ngx_uint_t offset); | |
67 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, | |
68 ngx_table_elt_t *h, ngx_uint_t offset); | |
69 #if (NGX_HTTP_GZIP) | |
70 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
71 ngx_table_elt_t *h, ngx_uint_t offset); | |
72 #endif | |
73 | |
573 | 74 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf); |
75 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r, | |
76 ngx_http_variable_value_t *v, uintptr_t data); | |
77 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
78 ngx_http_variable_value_t *v, uintptr_t data); | |
79 | |
651 | 80 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy); |
81 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, | |
82 void *conf); | |
83 | |
509 | 84 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf); |
651 | 85 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf); |
509 | 86 |
577 | 87 #if (NGX_HTTP_SSL) |
591 | 88 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *, |
89 ngx_http_upstream_t *u, ngx_connection_t *c); | |
577 | 90 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c); |
91 #endif | |
92 | |
509 | 93 |
94 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = { | |
95 | |
96 { ngx_string("Status"), | |
97 ngx_http_upstream_process_header_line, | |
98 offsetof(ngx_http_upstream_headers_in_t, status), | |
649 | 99 ngx_http_upstream_copy_header_line, 0, 0 }, |
509 | 100 |
101 { ngx_string("Content-Type"), | |
102 ngx_http_upstream_process_header_line, | |
103 offsetof(ngx_http_upstream_headers_in_t, content_type), | |
673 | 104 ngx_http_upstream_copy_content_type, 0, 1 }, |
509 | 105 |
106 { ngx_string("Content-Length"), | |
107 ngx_http_upstream_process_header_line, | |
108 offsetof(ngx_http_upstream_headers_in_t, content_length), | |
515 | 109 ngx_http_upstream_copy_content_length, 0, 0 }, |
509 | 110 |
111 { ngx_string("Date"), | |
112 ngx_http_upstream_process_header_line, | |
113 offsetof(ngx_http_upstream_headers_in_t, date), | |
649 | 114 ngx_http_upstream_copy_header_line, |
115 offsetof(ngx_http_headers_out_t, date), 0 }, | |
509 | 116 |
117 { ngx_string("Server"), | |
118 ngx_http_upstream_process_header_line, | |
119 offsetof(ngx_http_upstream_headers_in_t, server), | |
649 | 120 ngx_http_upstream_copy_header_line, |
121 offsetof(ngx_http_headers_out_t, server), 0 }, | |
509 | 122 |
529 | 123 { ngx_string("WWW-Authenticate"), |
124 ngx_http_upstream_process_header_line, | |
125 offsetof(ngx_http_upstream_headers_in_t, www_authenticate), | |
126 ngx_http_upstream_copy_header_line, 0, 0 }, | |
127 | |
509 | 128 { ngx_string("Location"), |
129 ngx_http_upstream_ignore_header_line, 0, | |
515 | 130 ngx_http_upstream_rewrite_location, 0, 0 }, |
509 | 131 |
132 { ngx_string("Refresh"), | |
133 ngx_http_upstream_ignore_header_line, 0, | |
515 | 134 ngx_http_upstream_rewrite_refresh, 0, 0 }, |
135 | |
136 { ngx_string("Set-Cookie"), | |
137 ngx_http_upstream_ignore_header_line, 0, | |
531 | 138 ngx_http_upstream_copy_header_line, 0, 1 }, |
139 | |
140 { ngx_string("Content-Disposition"), | |
141 ngx_http_upstream_ignore_header_line, 0, | |
142 ngx_http_upstream_copy_header_line, 0, 1 }, | |
509 | 143 |
144 { ngx_string("Cache-Control"), | |
145 ngx_http_upstream_process_multi_header_lines, | |
146 offsetof(ngx_http_upstream_headers_in_t, cache_control), | |
147 ngx_http_upstream_copy_multi_header_lines, | |
515 | 148 offsetof(ngx_http_headers_out_t, cache_control), 1 }, |
509 | 149 |
573 | 150 { ngx_string("Expires"), |
151 ngx_http_upstream_process_header_line, | |
152 offsetof(ngx_http_upstream_headers_in_t, expires), | |
153 ngx_http_upstream_copy_header_line, | |
154 offsetof(ngx_http_headers_out_t, expires), 1 }, | |
155 | |
577 | 156 { ngx_string("Accept-Ranges"), |
157 ngx_http_upstream_process_header_line, | |
158 offsetof(ngx_http_upstream_headers_in_t, accept_ranges), | |
159 ngx_http_upstream_copy_header_line, | |
160 offsetof(ngx_http_headers_out_t, accept_ranges), 1 }, | |
161 | |
509 | 162 { ngx_string("Connection"), |
163 ngx_http_upstream_ignore_header_line, 0, | |
515 | 164 ngx_http_upstream_ignore_header_line, 0, 0 }, |
509 | 165 |
641 | 166 { ngx_string("Keep-Alive"), |
167 ngx_http_upstream_ignore_header_line, 0, | |
168 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
169 | |
509 | 170 { ngx_string("X-Powered-By"), |
171 ngx_http_upstream_ignore_header_line, 0, | |
649 | 172 ngx_http_upstream_copy_header_line, 0, 0 }, |
509 | 173 |
174 { ngx_string("X-Accel-Expires"), | |
175 ngx_http_upstream_process_header_line, | |
176 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires), | |
649 | 177 ngx_http_upstream_copy_header_line, 0, 0 }, |
515 | 178 |
179 { ngx_string("X-Accel-Redirect"), | |
180 ngx_http_upstream_process_header_line, | |
181 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect), | |
182 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
509 | 183 |
527 | 184 { ngx_string("X-Accel-Limit-Rate"), |
185 ngx_http_upstream_process_limit_rate, 0, | |
186 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
187 | |
649 | 188 { ngx_string("X-Accel-Buffering"), |
189 ngx_http_upstream_process_buffering, 0, | |
190 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
191 | |
657 | 192 { ngx_string("X-Accel-Charset"), |
193 ngx_http_upstream_process_charset, 0, | |
194 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
195 | |
509 | 196 #if (NGX_HTTP_GZIP) |
197 { ngx_string("Content-Encoding"), | |
198 ngx_http_upstream_process_header_line, | |
199 offsetof(ngx_http_upstream_headers_in_t, content_encoding), | |
515 | 200 ngx_http_upstream_copy_content_encoding, 0, 0 }, |
509 | 201 #endif |
202 | |
515 | 203 { ngx_null_string, NULL, 0, NULL, 0, 0 } |
509 | 204 }; |
479 | 205 |
206 | |
651 | 207 static ngx_command_t ngx_http_upstream_commands[] = { |
208 | |
209 { ngx_string("upstream"), | |
210 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1, | |
211 ngx_http_upstream, | |
212 0, | |
213 0, | |
214 NULL }, | |
215 | |
216 { ngx_string("server"), | |
884 | 217 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE, |
651 | 218 ngx_http_upstream_server, |
219 NGX_HTTP_SRV_CONF_OFFSET, | |
220 0, | |
221 NULL }, | |
222 | |
223 ngx_null_command | |
224 }; | |
225 | |
226 | |
227 static ngx_http_module_t ngx_http_upstream_module_ctx = { | |
573 | 228 ngx_http_upstream_add_variables, /* preconfiguration */ |
509 | 229 NULL, /* postconfiguration */ |
230 | |
231 ngx_http_upstream_create_main_conf, /* create main configuration */ | |
651 | 232 ngx_http_upstream_init_main_conf, /* init main configuration */ |
479 | 233 |
234 NULL, /* create server configuration */ | |
235 NULL, /* merge server configuration */ | |
236 | |
237 NULL, /* create location configuration */ | |
238 NULL /* merge location configuration */ | |
239 }; | |
577 | 240 |
479 | 241 |
242 ngx_module_t ngx_http_upstream_module = { | |
509 | 243 NGX_MODULE_V1, |
479 | 244 &ngx_http_upstream_module_ctx, /* module context */ |
651 | 245 ngx_http_upstream_commands, /* module directives */ |
479 | 246 NGX_HTTP_MODULE, /* module type */ |
541 | 247 NULL, /* init master */ |
479 | 248 NULL, /* init module */ |
541 | 249 NULL, /* init process */ |
250 NULL, /* init thread */ | |
251 NULL, /* exit thread */ | |
252 NULL, /* exit process */ | |
253 NULL, /* exit master */ | |
254 NGX_MODULE_V1_PADDING | |
479 | 255 }; |
256 | |
257 | |
573 | 258 static ngx_http_variable_t ngx_http_upstream_vars[] = { |
259 | |
637 | 260 { ngx_string("upstream_status"), NULL, |
583 | 261 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
573 | 262 |
637 | 263 { ngx_string("upstream_response_time"), NULL, |
583 | 264 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
573 | 265 |
637 | 266 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
573 | 267 }; |
268 | |
269 | |
487 | 270 void |
271 ngx_http_upstream_init(ngx_http_request_t *r) | |
479 | 272 { |
509 | 273 ngx_connection_t *c; |
569 | 274 ngx_http_cleanup_t *cln; |
509 | 275 ngx_http_upstream_t *u; |
276 ngx_http_core_loc_conf_t *clcf; | |
479 | 277 |
278 c = r->connection; | |
279 | |
280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
281 "http init upstream, client timer: %d", c->read->timer_set); | |
282 | |
283 if (c->read->timer_set) { | |
284 ngx_del_timer(c->read); | |
285 } | |
286 | |
629 | 287 u = r->upstream; |
288 | |
289 if (!r->post_action && !u->conf->ignore_client_abort) { | |
615 | 290 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection; |
291 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection; | |
292 } | |
577 | 293 |
479 | 294 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { |
295 | |
296 if (!c->write->active) { | |
531 | 297 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT) |
298 == NGX_ERROR) | |
479 | 299 { |
300 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
301 return; | |
302 } | |
303 } | |
304 } | |
305 | |
537 | 306 if (r->request_body) { |
307 u->request_bufs = r->request_body->bufs; | |
308 } | |
509 | 309 |
884 | 310 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) { |
311 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
312 return; | |
313 } | |
314 | |
537 | 315 if (u->create_request(r) != NGX_OK) { |
479 | 316 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
317 return; | |
318 } | |
319 | |
509 | 320 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
479 | 321 |
322 u->output.sendfile = r->connection->sendfile; | |
323 u->output.pool = r->pool; | |
324 u->output.bufs.num = 1; | |
509 | 325 u->output.bufs.size = clcf->client_body_buffer_size; |
479 | 326 u->output.output_filter = ngx_chain_writer; |
327 u->output.filter_ctx = &u->writer; | |
328 | |
329 u->writer.pool = r->pool; | |
330 | |
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331 if (r->upstream_states == NULL) { |
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332 |
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333 r->upstream_states = ngx_array_create(r->pool, 1, |
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334 sizeof(ngx_http_upstream_state_t)); |
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335 if (r->upstream_states == NULL) { |
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336 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
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337 return; |
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338 } |
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339 |
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340 } else { |
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341 |
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342 u->state = ngx_array_push(r->upstream_states); |
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343 if (u->state == NULL) { |
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344 ngx_http_upstream_finalize_request(r, u, |
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345 NGX_HTTP_INTERNAL_SERVER_ERROR); |
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346 return; |
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347 } |
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348 |
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349 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); |
479 | 350 } |
351 | |
593 | 352 cln = ngx_http_cleanup_add(r, 0); |
569 | 353 if (cln == NULL) { |
354 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
355 return; | |
356 } | |
357 | |
358 cln->handler = ngx_http_upstream_cleanup; | |
359 cln->data = r; | |
360 u->cleanup = &cln->handler; | |
361 | |
479 | 362 ngx_http_upstream_connect(r, u); |
363 } | |
364 | |
365 | |
487 | 366 static void |
509 | 367 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r) |
368 { | |
369 ngx_http_upstream_check_broken_connection(r, r->connection->read); | |
370 } | |
371 | |
372 | |
373 static void | |
374 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r) | |
375 { | |
376 ngx_http_upstream_check_broken_connection(r, r->connection->write); | |
377 } | |
378 | |
379 | |
380 static void | |
381 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r, | |
382 ngx_event_t *ev) | |
479 | 383 { |
384 int n; | |
385 char buf[1]; | |
577 | 386 ngx_err_t err; |
479 | 387 ngx_connection_t *c; |
388 ngx_http_upstream_t *u; | |
389 | |
527 | 390 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
391 "http upstream check client, write event:%d, \"%V\"", | |
392 ev->write, &r->uri); | |
479 | 393 |
509 | 394 c = r->connection; |
483 | 395 u = r->upstream; |
396 | |
583 | 397 if (c->error) { |
527 | 398 ngx_http_upstream_finalize_request(r, u, |
399 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
400 return; | |
401 } | |
402 | |
483 | 403 if (u->peer.connection == NULL) { |
404 return; | |
405 } | |
406 | |
479 | 407 #if (NGX_HAVE_KQUEUE) |
408 | |
409 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
410 | |
411 if (!ev->pending_eof) { | |
412 return; | |
413 } | |
414 | |
415 ev->eof = 1; | |
583 | 416 c->error = 1; |
479 | 417 |
418 if (ev->kq_errno) { | |
419 ev->error = 1; | |
420 } | |
421 | |
422 if (!u->cachable && u->peer.connection) { | |
423 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
527 | 424 "kevent() reported that client closed prematurely " |
425 "connection, so upstream connection is closed too"); | |
479 | 426 ngx_http_upstream_finalize_request(r, u, |
427 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
428 return; | |
429 } | |
430 | |
431 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
432 "kevent() reported that client closed " | |
433 "prematurely connection"); | |
434 | |
435 if (u->peer.connection == NULL) { | |
436 ngx_http_upstream_finalize_request(r, u, | |
437 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
438 return; | |
439 } | |
440 | |
441 return; | |
442 } | |
443 | |
444 #endif | |
445 | |
446 n = recv(c->fd, buf, 1, MSG_PEEK); | |
447 | |
448 err = ngx_socket_errno; | |
449 | |
1109 | 450 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err, |
451 "http upstream recv(): %d", n); | |
452 | |
479 | 453 /* |
454 * we do not need to disable the write event because | |
455 * that event has NGX_USE_CLEAR_EVENT type | |
456 */ | |
457 | |
458 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) { | |
459 return; | |
460 } | |
461 | |
462 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) { | |
463 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { | |
464 ngx_http_upstream_finalize_request(r, u, | |
465 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
466 return; | |
467 } | |
468 } | |
469 | |
470 if (n > 0) { | |
471 return; | |
472 } | |
473 | |
474 if (n == -1) { | |
475 if (err == NGX_EAGAIN) { | |
476 return; | |
477 } | |
478 | |
479 ev->error = 1; | |
480 | |
483 | 481 } else { /* n == 0 */ |
479 | 482 err = 0; |
483 } | |
484 | |
529 | 485 ev->eof = 1; |
583 | 486 c->error = 1; |
529 | 487 |
479 | 488 if (!u->cachable && u->peer.connection) { |
489 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
490 "client closed prematurely connection, " | |
491 "so upstream connection is closed too"); | |
492 ngx_http_upstream_finalize_request(r, u, | |
493 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
494 return; | |
495 } | |
496 | |
497 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
498 "client closed prematurely connection"); | |
499 | |
500 if (u->peer.connection == NULL) { | |
501 ngx_http_upstream_finalize_request(r, u, | |
502 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
503 return; | |
504 } | |
505 } | |
506 | |
507 | |
487 | 508 static void |
509 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
479 | 510 { |
591 | 511 ngx_int_t rc; |
665 | 512 ngx_time_t *tp; |
591 | 513 ngx_connection_t *c; |
479 | 514 |
483 | 515 r->connection->log->action = "connecting to upstream"; |
479 | 516 |
517 r->connection->single_connection = 0; | |
518 | |
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519 if (u->state && u->state->response_sec) { |
665 | 520 tp = ngx_timeofday(); |
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521 u->state->response_sec = tp->sec - u->state->response_sec; |
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522 u->state->response_msec = tp->msec - u->state->response_msec; |
665 | 523 } |
524 | |
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525 u->state = ngx_array_push(r->upstream_states); |
665 | 526 if (u->state == NULL) { |
527 ngx_http_upstream_finalize_request(r, u, | |
528 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
529 return; | |
530 } | |
531 | |
532 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); | |
533 | |
534 tp = ngx_timeofday(); | |
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535 u->state->response_sec = tp->sec; |
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536 u->state->response_msec = tp->msec; |
665 | 537 |
479 | 538 rc = ngx_event_connect_peer(&u->peer); |
539 | |
540 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
541 "http upstream connect: %i", rc); | |
542 | |
543 if (rc == NGX_ERROR) { | |
544 ngx_http_upstream_finalize_request(r, u, | |
545 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
546 return; | |
547 } | |
548 | |
884 | 549 u->state->peer = u->peer.name; |
479 | 550 |
543 | 551 if (rc == NGX_BUSY) { |
552 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams"); | |
553 } | |
554 | |
555 if (rc == NGX_BUSY || rc == NGX_DECLINED) { | |
479 | 556 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
557 return; | |
558 } | |
559 | |
577 | 560 /* rc == NGX_OK || rc == NGX_AGAIN */ |
561 | |
479 | 562 c = u->peer.connection; |
563 | |
564 c->data = r; | |
591 | 565 |
509 | 566 c->write->handler = ngx_http_upstream_send_request_handler; |
567 c->read->handler = ngx_http_upstream_process_header; | |
479 | 568 |
569 c->sendfile = r->connection->sendfile; | |
570 | |
571 c->pool = r->pool; | |
572 c->read->log = c->write->log = c->log = r->connection->log; | |
573 | |
574 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */ | |
575 | |
576 u->writer.out = NULL; | |
577 u->writer.last = &u->writer.out; | |
578 u->writer.connection = c; | |
579 u->writer.limit = 0; | |
580 | |
581 if (u->request_sent) { | |
509 | 582 if (ngx_http_upstream_reinit(r, u) != NGX_OK) { |
583 ngx_http_upstream_finalize_request(r, u, | |
584 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
585 return; | |
586 } | |
479 | 587 } |
588 | |
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589 if (r->request_body |
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590 && r->request_body->buf |
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591 && r->request_body->temp_file |
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592 && r == r->main) |
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593 { |
573 | 594 /* |
595 * the r->request_body->buf can be reused for one request only, | |
596 * the subrequests should allocate their own temporay bufs | |
597 */ | |
598 | |
599 u->output.free = ngx_alloc_chain_link(r->pool); | |
600 if (u->output.free == NULL) { | |
601 ngx_http_upstream_finalize_request(r, u, | |
602 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
603 return; | |
479 | 604 } |
573 | 605 |
606 u->output.free->buf = r->request_body->buf; | |
607 u->output.free->next = NULL; | |
608 u->output.allocated = 1; | |
609 | |
610 r->request_body->buf->pos = r->request_body->buf->start; | |
611 r->request_body->buf->last = r->request_body->buf->start; | |
612 r->request_body->buf->tag = u->output.tag; | |
479 | 613 } |
614 | |
615 u->request_sent = 0; | |
616 | |
617 if (rc == NGX_AGAIN) { | |
618 ngx_add_timer(c->write, u->conf->connect_timeout); | |
619 return; | |
620 } | |
621 | |
577 | 622 #if (NGX_HTTP_SSL) |
623 | |
591 | 624 if (u->conf->ssl && c->ssl == NULL) { |
625 ngx_http_upstream_ssl_init_connection(r, u, c); | |
577 | 626 return; |
627 } | |
628 | |
629 #endif | |
630 | |
479 | 631 ngx_http_upstream_send_request(r, u); |
632 } | |
633 | |
634 | |
577 | 635 #if (NGX_HTTP_SSL) |
636 | |
637 static void | |
591 | 638 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r, |
639 ngx_http_upstream_t *u, ngx_connection_t *c) | |
640 { | |
884 | 641 ngx_int_t rc; |
591 | 642 |
643 if (ngx_ssl_create_connection(u->conf->ssl, c, | |
644 NGX_SSL_BUFFER|NGX_SSL_CLIENT) | |
645 == NGX_ERROR) | |
646 { | |
647 ngx_http_upstream_finalize_request(r, u, | |
648 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
649 return; | |
650 } | |
651 | |
652 c->sendfile = 0; | |
619 | 653 u->output.sendfile = 0; |
591 | 654 |
884 | 655 if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) { |
591 | 656 ngx_http_upstream_finalize_request(r, u, |
657 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
658 return; | |
659 } | |
660 | |
641 | 661 r->connection->log->action = "SSL handshaking to upstream"; |
662 | |
591 | 663 rc = ngx_ssl_handshake(c); |
664 | |
665 if (rc == NGX_AGAIN) { | |
666 c->ssl->handler = ngx_http_upstream_ssl_handshake; | |
667 return; | |
668 } | |
669 | |
670 ngx_http_upstream_ssl_handshake(c); | |
671 } | |
672 | |
673 | |
674 static void | |
577 | 675 ngx_http_upstream_ssl_handshake(ngx_connection_t *c) |
676 { | |
677 ngx_http_request_t *r; | |
678 ngx_http_upstream_t *u; | |
679 | |
680 r = c->data; | |
681 u = r->upstream; | |
682 | |
683 if (c->ssl->handshaked) { | |
684 | |
884 | 685 u->peer.save_session(&u->peer, u->peer.data); |
686 | |
577 | 687 c->write->handler = ngx_http_upstream_send_request_handler; |
688 c->read->handler = ngx_http_upstream_process_header; | |
689 | |
690 ngx_http_upstream_send_request(r, u); | |
691 | |
692 return; | |
693 } | |
694 | |
695 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
696 | |
697 } | |
698 | |
699 #endif | |
700 | |
701 | |
509 | 702 static ngx_int_t |
487 | 703 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u) |
479 | 704 { |
705 ngx_chain_t *cl; | |
706 | |
509 | 707 if (u->reinit_request(r) != NGX_OK) { |
708 return NGX_ERROR; | |
709 } | |
710 | |
711 ngx_memzero(&r->upstream->headers_in, | |
712 sizeof(ngx_http_upstream_headers_in_t)); | |
713 | |
714 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, | |
591 | 715 sizeof(ngx_table_elt_t)) |
716 != NGX_OK) | |
509 | 717 { |
718 return NGX_ERROR; | |
479 | 719 } |
720 | |
721 /* reinit the request chain */ | |
577 | 722 |
509 | 723 for (cl = u->request_bufs; cl; cl = cl->next) { |
479 | 724 cl->buf->pos = cl->buf->start; |
725 cl->buf->file_pos = 0; | |
726 } | |
727 | |
509 | 728 /* reinit the subrequest's ngx_output_chain() context */ |
729 | |
573 | 730 if (r->request_body && r->request_body->temp_file |
597 | 731 && r != r->main && u->output.buf) |
573 | 732 { |
733 u->output.free = ngx_alloc_chain_link(r->pool); | |
734 if (u->output.free == NULL) { | |
735 return NGX_ERROR; | |
509 | 736 } |
573 | 737 |
738 u->output.free->buf = u->output.buf; | |
739 u->output.free->next = NULL; | |
740 | |
741 u->output.buf->pos = u->output.buf->start; | |
742 u->output.buf->last = u->output.buf->start; | |
509 | 743 } |
479 | 744 |
745 u->output.buf = NULL; | |
746 u->output.in = NULL; | |
747 u->output.busy = NULL; | |
577 | 748 |
581 | 749 /* reinit u->buffer */ |
577 | 750 |
479 | 751 #if 0 |
752 if (u->cache) { | |
581 | 753 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size; |
754 u->buffer.last = u->buffer.pos; | |
479 | 755 |
756 } else { | |
581 | 757 u->buffer.pos = u->buffer.start; |
758 u->buffer.last = u->buffer.start; | |
479 | 759 } |
760 #else | |
509 | 761 |
581 | 762 u->buffer.pos = u->buffer.start; |
763 u->buffer.last = u->buffer.start; | |
509 | 764 |
479 | 765 #endif |
766 | |
509 | 767 return NGX_OK; |
479 | 768 } |
769 | |
770 | |
487 | 771 static void |
772 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
479 | 773 { |
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774 ngx_int_t rc; |
483 | 775 ngx_connection_t *c; |
577 | 776 |
479 | 777 c = u->peer.connection; |
778 | |
779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
780 "http upstream send request"); | |
781 | |
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782 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) { |
1166 | 783 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
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784 return; |
479 | 785 } |
786 | |
483 | 787 c->log->action = "sending request to upstream"; |
479 | 788 |
509 | 789 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs); |
479 | 790 |
791 u->request_sent = 1; | |
792 | |
793 if (rc == NGX_ERROR) { | |
794 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
795 return; | |
796 } | |
797 | |
798 if (c->write->timer_set) { | |
799 ngx_del_timer(c->write); | |
800 } | |
801 | |
802 if (rc == NGX_AGAIN) { | |
803 ngx_add_timer(c->write, u->conf->send_timeout); | |
804 | |
805 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR) | |
806 { | |
807 ngx_http_upstream_finalize_request(r, u, | |
808 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
809 return; | |
810 } | |
811 | |
812 return; | |
813 } | |
814 | |
815 /* rc == NGX_OK */ | |
816 | |
817 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { | |
818 if (ngx_tcp_push(c->fd) == NGX_ERROR) { | |
819 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno, | |
820 ngx_tcp_push_n " failed"); | |
821 ngx_http_upstream_finalize_request(r, u, | |
822 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
577 | 823 return; |
479 | 824 } |
825 | |
826 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; | |
827 } | |
577 | 828 |
479 | 829 ngx_add_timer(c->read, u->conf->read_timeout); |
830 | |
831 #if 1 | |
832 if (c->read->ready) { | |
577 | 833 |
479 | 834 /* post aio operation */ |
835 | |
836 /* | |
837 * TODO comment | |
838 * although we can post aio operation just in the end | |
839 * of ngx_http_upstream_connect() CHECK IT !!! | |
840 * it's better to do here because we postpone header buffer allocation | |
841 */ | |
842 | |
843 ngx_http_upstream_process_header(c->read); | |
844 return; | |
845 } | |
846 #endif | |
847 | |
509 | 848 c->write->handler = ngx_http_upstream_dummy_handler; |
479 | 849 |
509 | 850 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) { |
479 | 851 ngx_http_upstream_finalize_request(r, u, |
852 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
853 return; | |
854 } | |
855 } | |
856 | |
857 | |
487 | 858 static void |
859 ngx_http_upstream_send_request_handler(ngx_event_t *wev) | |
479 | 860 { |
861 ngx_connection_t *c; | |
862 ngx_http_request_t *r; | |
863 ngx_http_upstream_t *u; | |
864 | |
865 c = wev->data; | |
866 r = c->data; | |
867 u = r->upstream; | |
868 | |
869 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
870 "http upstream send request handler"); | |
871 | |
872 if (wev->timedout) { | |
873 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
874 return; | |
875 } | |
876 | |
591 | 877 #if (NGX_HTTP_SSL) |
878 | |
879 if (u->conf->ssl && c->ssl == NULL) { | |
880 ngx_http_upstream_ssl_init_connection(r, u, c); | |
881 return; | |
882 } | |
883 | |
884 #endif | |
885 | |
651 | 886 if (u->header_sent) { |
887 wev->handler = ngx_http_upstream_dummy_handler; | |
888 | |
889 (void) ngx_handle_write_event(wev, 0); | |
890 | |
891 return; | |
892 } | |
893 | |
479 | 894 ngx_http_upstream_send_request(r, u); |
895 } | |
896 | |
897 | |
487 | 898 static void |
899 ngx_http_upstream_process_header(ngx_event_t *rev) | |
479 | 900 { |
515 | 901 ssize_t n; |
902 ngx_int_t rc; | |
573 | 903 ngx_str_t *uri, args; |
649 | 904 ngx_uint_t i, flags; |
515 | 905 ngx_list_part_t *part; |
906 ngx_table_elt_t *h; | |
907 ngx_connection_t *c; | |
908 ngx_http_request_t *r; | |
909 ngx_http_upstream_t *u; | |
910 ngx_http_err_page_t *err_page; | |
911 ngx_http_core_loc_conf_t *clcf; | |
912 ngx_http_upstream_header_t *hh; | |
913 ngx_http_upstream_main_conf_t *umcf; | |
479 | 914 |
915 c = rev->data; | |
916 r = c->data; | |
917 u = r->upstream; | |
918 | |
919 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, | |
483 | 920 "http upstream process header"); |
479 | 921 |
483 | 922 c->log->action = "reading response header from upstream"; |
479 | 923 |
924 if (rev->timedout) { | |
925 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
926 return; | |
927 } | |
577 | 928 |
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929 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) { |
1166 | 930 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
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931 return; |
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932 } |
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933 |
581 | 934 if (u->buffer.start == NULL) { |
935 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size); | |
936 if (u->buffer.start == NULL) { | |
479 | 937 ngx_http_upstream_finalize_request(r, u, |
938 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
939 return; | |
940 } | |
941 | |
581 | 942 u->buffer.pos = u->buffer.start; |
943 u->buffer.last = u->buffer.start; | |
944 u->buffer.end = u->buffer.start + u->conf->buffer_size; | |
945 u->buffer.temporary = 1; | |
946 | |
947 u->buffer.tag = u->output.tag; | |
479 | 948 |
509 | 949 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, |
581 | 950 sizeof(ngx_table_elt_t)) |
951 != NGX_OK) | |
509 | 952 { |
953 ngx_http_upstream_finalize_request(r, u, | |
954 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
955 return; | |
956 } | |
957 | |
479 | 958 #if 0 |
959 if (u->cache) { | |
581 | 960 u->buffer.pos += u->cache->ctx.header_size; |
961 u->buffer.last = u->buffer.pos; | |
479 | 962 } |
963 #endif | |
964 } | |
965 | |
581 | 966 n = u->peer.connection->recv(u->peer.connection, u->buffer.last, |
884 | 967 u->buffer.end - u->buffer.last); |
479 | 968 |
969 if (n == NGX_AGAIN) { | |
970 #if 0 | |
971 ngx_add_timer(rev, u->read_timeout); | |
972 #endif | |
973 | |
974 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
975 ngx_http_upstream_finalize_request(r, u, | |
976 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
977 return; | |
978 } | |
979 | |
980 return; | |
981 } | |
982 | |
983 if (n == 0) { | |
984 ngx_log_error(NGX_LOG_ERR, rev->log, 0, | |
985 "upstream prematurely closed connection"); | |
986 } | |
987 | |
988 if (n == NGX_ERROR || n == 0) { | |
989 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
990 return; | |
991 } | |
992 | |
581 | 993 u->buffer.last += n; |
479 | 994 |
995 #if 0 | |
996 u->valid_header_in = 0; | |
997 | |
998 u->peer.cached = 0; | |
999 #endif | |
1000 | |
1001 rc = u->process_header(r); | |
1002 | |
1003 if (rc == NGX_AGAIN) { | |
1004 #if 0 | |
1005 ngx_add_timer(rev, u->read_timeout); | |
1006 #endif | |
1007 | |
581 | 1008 if (u->buffer.pos == u->buffer.end) { |
479 | 1009 ngx_log_error(NGX_LOG_ERR, rev->log, 0, |
1010 "upstream sent too big header"); | |
1011 | |
1012 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
1013 return; | |
1014 } | |
1015 | |
1016 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
1017 ngx_http_upstream_finalize_request(r, u, | |
1018 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1019 return; | |
1020 } | |
1021 | |
1022 return; | |
1023 } | |
1024 | |
1025 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) { | |
1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
1027 return; | |
1028 } | |
1029 | |
1030 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { | |
1031 ngx_http_upstream_finalize_request(r, u, | |
1032 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1033 return; | |
1034 } | |
1035 | |
1036 /* rc == NGX_OK */ | |
1037 | |
777
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1038 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
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|
1039 && r->subrequest_in_memory) |
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|
1040 { |
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|
1041 u->buffer.last = u->buffer.pos; |
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|
1042 } |
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|
1043 |
529 | 1044 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) { |
509 | 1045 |
1046 if (u->peer.tries > 1 | |
1047 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
1048 { | |
1049 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500); | |
1050 return; | |
1051 } | |
1052 | |
1053 #if (NGX_HTTP_CACHE) | |
1054 | |
1055 if (u->peer.tries == 0 | |
1056 && u->stale | |
1057 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
1058 { | |
1059 ngx_http_upstream_finalize_request(r, u, | |
529 | 1060 ngx_http_send_cached_response(r)); |
509 | 1061 return; |
1062 } | |
1063 | |
1064 #endif | |
1065 } | |
1066 | |
597 | 1067 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) { |
1068 | |
1069 if (u->peer.tries > 1 | |
1070 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404) | |
1071 { | |
1072 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404); | |
1073 return; | |
1074 } | |
1075 | |
675 | 1076 if (u->conf->intercept_404) { |
1077 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND); | |
597 | 1078 return; |
1079 } | |
509 | 1080 } |
1081 | |
1082 | |
529 | 1083 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
675 | 1084 && u->conf->intercept_errors) |
487 | 1085 { |
1086 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
1087 | |
1088 if (clcf->error_pages) { | |
1089 | |
1090 err_page = clcf->error_pages->elts; | |
1091 for (i = 0; i < clcf->error_pages->nelts; i++) { | |
529 | 1092 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) { |
1093 | |
1094 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) { | |
1095 | |
1096 r->headers_out.www_authenticate = | |
1097 ngx_list_push(&r->headers_out.headers); | |
1098 | |
1099 if (r->headers_out.www_authenticate == NULL) { | |
1100 ngx_http_upstream_finalize_request(r, u, | |
1101 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1102 return; | |
1103 } | |
1104 | |
577 | 1105 *r->headers_out.www_authenticate = |
529 | 1106 *u->headers_in.www_authenticate; |
1107 } | |
1108 | |
487 | 1109 ngx_http_upstream_finalize_request(r, u, |
529 | 1110 u->headers_in.status_n); |
487 | 1111 return; |
1112 } | |
1113 } | |
1114 } | |
1115 } | |
1116 | |
681 | 1117 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); |
1118 | |
515 | 1119 if (r->upstream->headers_in.x_accel_redirect) { |
757
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|
1120 |
515 | 1121 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED); |
1122 | |
1123 part = &r->upstream->headers_in.headers.part; | |
1124 h = part->elts; | |
1125 | |
1126 for (i = 0; /* void */; i++) { | |
1127 | |
1128 if (i >= part->nelts) { | |
1129 if (part->next == NULL) { | |
1130 break; | |
1131 } | |
577 | 1132 |
515 | 1133 part = part->next; |
1134 h = part->elts; | |
1135 i = 0; | |
1136 } | |
1137 | |
649 | 1138 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, |
1139 h[i].lowcase_key, h[i].key.len); | |
1140 | |
1141 if (hh && hh->redirect) { | |
1142 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
787
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|
1143 ngx_http_finalize_request(r, |
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|
1144 NGX_HTTP_INTERNAL_SERVER_ERROR); |
515 | 1145 return; |
1146 } | |
1147 } | |
1148 } | |
1149 | |
573 | 1150 uri = &r->upstream->headers_in.x_accel_redirect->value; |
1151 args.len = 0; | |
1152 args.data = NULL; | |
1153 flags = 0; | |
1154 | |
1155 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) { | |
757
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diff
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|
1156 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); |
573 | 1157 return; |
1158 } | |
1159 | |
1160 if (flags & NGX_HTTP_ZERO_IN_URI) { | |
1161 r->zero_in_uri = 1; | |
1162 } | |
1163 | |
653 | 1164 if (r->method != NGX_HTTP_HEAD) { |
1165 r->method = NGX_HTTP_GET; | |
1166 } | |
1167 | |
573 | 1168 ngx_http_internal_redirect(r, uri, &args); |
515 | 1169 return; |
1170 } | |
1171 | |
509 | 1172 part = &r->upstream->headers_in.headers.part; |
1173 h = part->elts; | |
1174 | |
1175 for (i = 0; /* void */; i++) { | |
479 | 1176 |
509 | 1177 if (i >= part->nelts) { |
1178 if (part->next == NULL) { | |
1179 break; | |
1180 } | |
577 | 1181 |
509 | 1182 part = part->next; |
1183 h = part->elts; | |
1184 i = 0; | |
1185 } | |
1186 | |
649 | 1187 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash, |
1188 h[i].lowcase_key, h[i].key.len)) | |
509 | 1189 { |
649 | 1190 continue; |
1191 } | |
1192 | |
1193 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, | |
1194 h[i].lowcase_key, h[i].key.len); | |
1195 | |
1196 if (hh) { | |
1197 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
509 | 1198 ngx_http_upstream_finalize_request(r, u, |
1199 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1200 return; | |
1201 } | |
1202 | |
1203 continue; | |
1204 } | |
1205 | |
1206 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) { | |
1207 ngx_http_upstream_finalize_request(r, u, | |
1208 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1209 return; | |
1210 } | |
1211 } | |
1212 | |
649 | 1213 if (r->headers_out.server && r->headers_out.server->value.data == NULL) { |
1214 r->headers_out.server->hash = 0; | |
1215 } | |
1216 | |
1217 if (r->headers_out.date && r->headers_out.date->value.data == NULL) { | |
1218 r->headers_out.date->hash = 0; | |
1219 } | |
1220 | |
529 | 1221 r->headers_out.status = u->headers_in.status_n; |
1222 r->headers_out.status_line = u->headers_in.status_line; | |
1223 | |
581 | 1224 if (r->headers_out.content_length_n != -1) { |
1225 u->length = (size_t) r->headers_out.content_length_n; | |
1226 | |
1227 } else { | |
1228 u->length = NGX_MAX_SIZE_T_VALUE; | |
1229 } | |
1230 | |
777
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1231 if (!r->subrequest_in_memory) { |
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|
1232 ngx_http_upstream_send_response(r, u); |
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|
1233 return; |
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|
1234 } |
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|
1235 |
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|
1236 /* subrequest content in memory */ |
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|
1237 |
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|
1238 if (u->input_filter == NULL) { |
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diff
changeset
|
1239 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; |
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diff
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|
1240 u->input_filter = ngx_http_upstream_non_buffered_filter; |
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diff
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|
1241 u->input_filter_ctx = r; |
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|
1242 } |
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|
1243 |
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|
1244 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { |
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|
1245 ngx_http_upstream_finalize_request(r, u, |
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|
1246 NGX_HTTP_INTERNAL_SERVER_ERROR); |
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diff
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|
1247 return; |
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diff
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|
1248 } |
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|
1249 |
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|
1250 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) { |
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|
1251 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) { |
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|
1252 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1253 return; |
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|
1254 } |
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|
1255 |
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|
1256 ngx_http_upstream_finalize_request(r, u, 0); |
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|
1257 return; |
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|
1258 } |
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|
1259 |
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1260 rev->handler = ngx_http_upstream_process_body_in_memory; |
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1261 |
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1262 ngx_http_upstream_process_body_in_memory(rev); |
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|
1263 } |
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|
1264 |
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1265 |
1153
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1266 static ngx_int_t |
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diff
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|
1267 ngx_http_upstream_test_connect(ngx_connection_t *c) |
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|
1268 { |
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diff
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|
1269 int err; |
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diff
changeset
|
1270 socklen_t len; |
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diff
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|
1271 |
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|
1272 #if (NGX_HAVE_KQUEUE) |
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|
1273 |
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diff
changeset
|
1274 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
1166 | 1275 if (c->write->pending_eof) { |
1276 (void) ngx_connection_error(c, c->write->kq_errno, | |
1277 "kevent() reported that connect() failed"); | |
1278 return NGX_ERROR; | |
1279 } | |
1153
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|
1280 |
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diff
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|
1281 } else |
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diff
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|
1282 #endif |
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|
1283 { |
1166 | 1284 err = 0; |
1285 len = sizeof(int); | |
1286 | |
1287 /* | |
1288 * BSDs and Linux return 0 and set a pending error in err | |
1289 * Solaris returns -1 and sets errno | |
1290 */ | |
1291 | |
1292 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len) | |
1293 == -1) | |
1294 { | |
1295 err = ngx_errno; | |
1296 } | |
1297 | |
1298 if (err) { | |
1299 (void) ngx_connection_error(c, err, "connect() failed"); | |
1300 return NGX_ERROR; | |
1301 } | |
1153
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1302 } |
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1303 |
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1304 return NGX_OK; |
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1305 } |
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1306 |
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1307 |
777
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1308 static void |
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1309 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev) |
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1310 { |
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1311 size_t size; |
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1312 ssize_t n; |
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1313 ngx_buf_t *b; |
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1314 ngx_connection_t *c; |
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1315 ngx_http_request_t *r; |
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|
1316 ngx_http_upstream_t *u; |
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1317 |
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1318 c = rev->data; |
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1319 r = c->data; |
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1320 u = r->upstream; |
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1321 |
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1322 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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1323 "http upstream process body on memory"); |
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1324 |
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1325 if (rev->timedout) { |
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1326 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
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1327 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT); |
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|
1328 return; |
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|
1329 } |
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|
1330 |
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1331 b = &u->buffer; |
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1332 |
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1333 for ( ;; ) { |
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1334 |
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1335 size = b->end - b->last; |
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1336 |
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1337 if (size == 0) { |
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|
1338 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
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1339 "upstream buffer is too small to read repsonse"); |
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1340 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1341 return; |
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|
1342 } |
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|
1343 |
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1344 n = c->recv(c, b->last, size); |
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1345 |
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1346 if (n == NGX_AGAIN) { |
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1347 break; |
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1348 } |
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1349 |
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1350 if (n == 0 || n == NGX_ERROR) { |
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1351 ngx_http_upstream_finalize_request(r, u, n); |
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1352 return; |
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|
1353 } |
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1354 |
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1355 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { |
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1356 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1357 return; |
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|
1358 } |
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|
1359 |
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1360 if (!rev->ready) { |
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|
1361 break; |
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|
1362 } |
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|
1363 } |
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1364 |
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1365 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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1366 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1367 return; |
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|
1368 } |
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|
1369 |
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1370 if (rev->active) { |
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1371 ngx_add_timer(rev, u->conf->read_timeout); |
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1372 |
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1373 } else if (rev->timer_set) { |
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1374 ngx_del_timer(rev); |
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1375 } |
681 | 1376 } |
1377 | |
1378 | |
1379 static void | |
1380 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
1381 { | |
1382 int tcp_nodelay; | |
1383 ssize_t size; | |
1384 ngx_int_t rc; | |
1385 ngx_event_pipe_t *p; | |
1386 ngx_connection_t *c; | |
1387 ngx_pool_cleanup_t *cl; | |
1388 ngx_pool_cleanup_file_t *clf; | |
1389 ngx_http_core_loc_conf_t *clcf; | |
1390 | |
509 | 1391 rc = ngx_http_send_header(r); |
479 | 1392 |
1031
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1393 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) { |
485 | 1394 ngx_http_upstream_finalize_request(r, u, rc); |
479 | 1395 return; |
1396 } | |
1397 | |
1398 u->header_sent = 1; | |
1399 | |
573 | 1400 if (r->request_body && r->request_body->temp_file) { |
563 | 1401 for (cl = r->pool->cleanup; cl; cl = cl->next) { |
1402 if (cl->handler == ngx_pool_cleanup_file) { | |
1403 clf = cl->data; | |
1404 | |
1405 if (clf->fd == r->request_body->temp_file->file.fd) { | |
1406 cl->handler(clf); | |
1407 cl->handler = NULL; | |
659 | 1408 r->request_body->temp_file->file.fd = NGX_INVALID_FILE; |
563 | 1409 break; |
1410 } | |
1411 } | |
1412 } | |
1413 } | |
1414 | |
583 | 1415 c = r->connection; |
1416 | |
581 | 1417 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
1418 | |
649 | 1419 if (!u->buffering) { |
581 | 1420 |
1421 if (u->input_filter == NULL) { | |
1422 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; | |
1423 u->input_filter = ngx_http_upstream_non_buffered_filter; | |
1424 u->input_filter_ctx = r; | |
1425 } | |
1426 | |
1427 u->peer.connection->read->handler = | |
1428 ngx_http_upstream_process_non_buffered_body; | |
1429 r->write_event_handler = | |
1430 ngx_http_upstream_process_non_buffered_downstream; | |
1431 | |
1432 r->limit_rate = 0; | |
1433 | |
1434 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { | |
1435 ngx_http_upstream_finalize_request(r, u, 0); | |
1436 return; | |
1437 } | |
1438 | |
583 | 1439 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) { |
1440 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); | |
1441 | |
1442 tcp_nodelay = 1; | |
1443 | |
1444 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, | |
1445 (const void *) &tcp_nodelay, sizeof(int)) == -1) | |
1446 { | |
1447 ngx_connection_error(c, ngx_socket_errno, | |
1448 "setsockopt(TCP_NODELAY) failed"); | |
1449 ngx_http_upstream_finalize_request(r, u, 0); | |
1450 return; | |
1451 } | |
1452 | |
1453 c->tcp_nodelay = NGX_TCP_NODELAY_SET; | |
1454 } | |
1455 | |
581 | 1456 size = u->buffer.last - u->buffer.pos; |
1457 | |
1458 if (size) { | |
1459 u->buffer.last = u->buffer.pos; | |
1460 | |
1461 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) { | |
1462 ngx_http_upstream_finalize_request(r, u, 0); | |
1463 return; | |
1464 } | |
1465 | |
583 | 1466 ngx_http_upstream_process_non_buffered_body(c->write); |
581 | 1467 |
1468 } else { | |
1469 u->buffer.pos = u->buffer.start; | |
1470 u->buffer.last = u->buffer.start; | |
1471 | |
1472 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) { | |
1473 ngx_http_upstream_finalize_request(r, u, 0); | |
1474 return; | |
1475 } | |
1476 } | |
1477 | |
1478 return; | |
1479 } | |
1480 | |
479 | 1481 /* TODO: preallocate event_pipe bufs, look "Content-Length" */ |
1482 | |
1483 #if 0 | |
1484 | |
1485 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) { | |
1486 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) { | |
583 | 1487 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
479 | 1488 ngx_close_file_n " \"%s\" failed", |
1489 u->cache->ctx.file.name.data); | |
1490 } | |
1491 } | |
1492 | |
1493 if (u->cachable) { | |
581 | 1494 header = (ngx_http_cache_header_t *) u->buffer->start; |
479 | 1495 |
1496 header->expires = u->cache->ctx.expires; | |
1497 header->last_modified = u->cache->ctx.last_modified; | |
1498 header->date = u->cache->ctx.date; | |
1499 header->length = r->headers_out.content_length_n; | |
1500 u->cache->ctx.length = r->headers_out.content_length_n; | |
1501 | |
1502 header->key_len = u->cache->ctx.key0.len; | |
1503 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len); | |
1504 header->key[header->key_len] = LF; | |
1505 } | |
1506 | |
1507 #endif | |
1508 | |
581 | 1509 p = u->pipe; |
479 | 1510 |
1511 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter; | |
1512 p->output_ctx = r; | |
1513 p->tag = u->output.tag; | |
577 | 1514 p->bufs = u->conf->bufs; |
479 | 1515 p->busy_size = u->conf->busy_buffers_size; |
1516 p->upstream = u->peer.connection; | |
583 | 1517 p->downstream = c; |
479 | 1518 p->pool = r->pool; |
583 | 1519 p->log = c->log; |
577 | 1520 |
479 | 1521 p->cachable = u->cachable; |
1522 | |
501 | 1523 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
1524 if (p->temp_file == NULL) { | |
479 | 1525 ngx_http_upstream_finalize_request(r, u, 0); |
1526 return; | |
1527 } | |
1528 | |
1529 p->temp_file->file.fd = NGX_INVALID_FILE; | |
583 | 1530 p->temp_file->file.log = c->log; |
479 | 1531 p->temp_file->path = u->conf->temp_path; |
1532 p->temp_file->pool = r->pool; | |
577 | 1533 |
479 | 1534 if (u->cachable) { |
1535 p->temp_file->persistent = 1; | |
1536 } else { | |
667 | 1537 p->temp_file->log_level = NGX_LOG_WARN; |
479 | 1538 p->temp_file->warn = "an upstream response is buffered " |
1539 "to a temporary file"; | |
1540 } | |
1541 | |
1542 p->max_temp_file_size = u->conf->max_temp_file_size; | |
1543 p->temp_file_write_size = u->conf->temp_file_write_size; | |
1544 | |
501 | 1545 p->preread_bufs = ngx_alloc_chain_link(r->pool); |
1546 if (p->preread_bufs == NULL) { | |
479 | 1547 ngx_http_upstream_finalize_request(r, u, 0); |
1548 return; | |
1549 } | |
581 | 1550 p->preread_bufs->buf = &u->buffer; |
479 | 1551 p->preread_bufs->next = NULL; |
581 | 1552 u->buffer.recycled = 1; |
1553 | |
1554 p->preread_size = u->buffer.last - u->buffer.pos; | |
479 | 1555 |
1556 if (u->cachable) { | |
1557 p->buf_to_file = ngx_calloc_buf(r->pool); | |
1558 if (p->buf_to_file == NULL) { | |
1559 ngx_http_upstream_finalize_request(r, u, 0); | |
1560 return; | |
1561 } | |
581 | 1562 p->buf_to_file->pos = u->buffer.start; |
1563 p->buf_to_file->last = u->buffer.pos; | |
479 | 1564 p->buf_to_file->temporary = 1; |
1565 } | |
1566 | |
1567 if (ngx_event_flags & NGX_USE_AIO_EVENT) { | |
1568 /* the posted aio operation may currupt a shadow buffer */ | |
1569 p->single_buf = 1; | |
1570 } | |
1571 | |
1572 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */ | |
1573 p->free_bufs = 1; | |
1574 | |
1575 /* | |
581 | 1576 * event_pipe would do u->buffer.last += p->preread_size |
479 | 1577 * as though these bytes were read |
1578 */ | |
581 | 1579 u->buffer.last = u->buffer.pos; |
479 | 1580 |
1581 if (u->conf->cyclic_temp_file) { | |
1582 | |
1583 /* | |
1584 * we need to disable the use of sendfile() if we use cyclic temp file | |
1585 * because the writing a new data may interfere with sendfile() | |
1586 * that uses the same kernel file pages (at least on FreeBSD) | |
1587 */ | |
1588 | |
1589 p->cyclic_temp_file = 1; | |
583 | 1590 c->sendfile = 0; |
479 | 1591 |
1592 } else { | |
1593 p->cyclic_temp_file = 0; | |
1594 } | |
1595 | |
1596 p->read_timeout = u->conf->read_timeout; | |
1597 p->send_timeout = clcf->send_timeout; | |
1598 p->send_lowat = clcf->send_lowat; | |
1599 | |
509 | 1600 u->peer.connection->read->handler = ngx_http_upstream_process_body; |
1601 r->write_event_handler = ngx_http_upstream_process_downstream; | |
479 | 1602 |
1603 ngx_http_upstream_process_body(u->peer.connection->read); | |
1604 } | |
1605 | |
1606 | |
487 | 1607 static void |
581 | 1608 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r) |
1609 { | |
1610 ngx_http_upstream_process_non_buffered_body(r->connection->write); | |
1611 } | |
1612 | |
1613 | |
1614 static void | |
1615 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev) | |
1616 { | |
1617 size_t size; | |
1618 ssize_t n; | |
1619 ngx_buf_t *b; | |
583 | 1620 ngx_int_t rc; |
581 | 1621 ngx_uint_t do_write; |
884 | 1622 ngx_connection_t *c, *downstream, *upstream; |
581 | 1623 ngx_http_request_t *r; |
1624 ngx_http_upstream_t *u; | |
1625 ngx_http_core_loc_conf_t *clcf; | |
1626 | |
1627 c = ev->data; | |
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1628 r = c->data; |
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1629 u = r->upstream; |
581 | 1630 |
1631 if (ev->write) { | |
1632 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1633 "http upstream process non buffered downstream"); | |
1634 c->log->action = "sending to client"; | |
1635 | |
1636 } else { | |
1637 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1638 "http upstream process non buffered upstream"); | |
1639 c->log->action = "reading upstream"; | |
1640 } | |
1641 | |
1642 if (ev->timedout) { | |
1643 if (ev->write) { | |
1644 c->timedout = 1; | |
611 | 1645 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
1646 | |
581 | 1647 } else { |
611 | 1648 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
581 | 1649 } |
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1650 |
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1651 ngx_http_upstream_finalize_request(r, u, 0); |
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1652 return; |
581 | 1653 } |
1654 | |
884 | 1655 downstream = r->connection; |
1656 upstream = u->peer.connection; | |
581 | 1657 |
1658 b = &u->buffer; | |
1659 | |
1660 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
1661 | |
657 | 1662 do_write = ev->write || u->length == 0; |
581 | 1663 |
1664 for ( ;; ) { | |
1665 | |
1666 if (do_write) { | |
1667 | |
1668 if (u->out_bufs || u->busy_bufs) { | |
583 | 1669 rc = ngx_http_output_filter(r, u->out_bufs); |
1670 | |
884 | 1671 if (downstream->destroyed) { |
583 | 1672 return; |
1673 } | |
1674 | |
1675 if (rc == NGX_ERROR) { | |
581 | 1676 ngx_http_upstream_finalize_request(r, u, 0); |
1677 return; | |
1678 } | |
1679 | |
1680 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs, | |
1681 &u->out_bufs, u->output.tag); | |
1682 } | |
1683 | |
1684 if (u->busy_bufs == NULL) { | |
1685 | |
1686 if (u->length == 0 | |
884 | 1687 || upstream->read->eof |
1688 || upstream->read->error) | |
581 | 1689 { |
1690 ngx_http_upstream_finalize_request(r, u, 0); | |
1691 return; | |
1692 } | |
1693 | |
1694 b->pos = b->start; | |
1695 b->last = b->start; | |
1696 } | |
1697 } | |
1698 | |
1699 size = b->end - b->last; | |
1700 | |
1701 if (size > u->length) { | |
1702 size = u->length; | |
1703 } | |
1704 | |
884 | 1705 if (size && upstream->read->ready) { |
1706 | |
1707 n = upstream->recv(upstream, b->last, size); | |
581 | 1708 |
1709 if (n == NGX_AGAIN) { | |
1710 break; | |
1711 } | |
1712 | |
1713 if (n > 0) { | |
1714 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { | |
1715 ngx_http_upstream_finalize_request(r, u, 0); | |
1716 return; | |
1717 } | |
1718 } | |
1719 | |
1720 do_write = 1; | |
1721 | |
1722 continue; | |
1723 } | |
1724 | |
1725 break; | |
1726 } | |
1727 | |
884 | 1728 if (downstream->data == r) { |
1729 if (ngx_handle_write_event(downstream->write, clcf->send_lowat) | |
583 | 1730 == NGX_ERROR) |
1731 { | |
1732 ngx_http_upstream_finalize_request(r, u, 0); | |
1733 return; | |
1734 } | |
581 | 1735 } |
1736 | |
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1737 if (downstream->write->active && !downstream->write->ready) { |
884 | 1738 ngx_add_timer(downstream->write, clcf->send_timeout); |
1739 | |
1740 } else if (downstream->write->timer_set) { | |
1741 ngx_del_timer(downstream->write); | |
581 | 1742 } |
1743 | |
884 | 1744 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) { |
581 | 1745 ngx_http_upstream_finalize_request(r, u, 0); |
1746 return; | |
1747 } | |
1748 | |
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1749 if (upstream->read->active && !upstream->read->ready) { |
884 | 1750 ngx_add_timer(upstream->read, u->conf->read_timeout); |
1751 | |
1752 } else if (upstream->read->timer_set) { | |
1753 ngx_del_timer(upstream->read); | |
581 | 1754 } |
1755 } | |
1756 | |
1757 | |
1758 static ngx_int_t | |
1759 ngx_http_upstream_non_buffered_filter_init(void *data) | |
1760 { | |
1761 return NGX_OK; | |
1762 } | |
1763 | |
1764 | |
1765 static ngx_int_t | |
1766 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes) | |
1767 { | |
1768 ngx_http_request_t *r = data; | |
1769 | |
1770 ngx_buf_t *b; | |
1771 ngx_chain_t *cl, **ll; | |
1772 ngx_http_upstream_t *u; | |
1773 | |
1774 u = r->upstream; | |
1775 | |
1776 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1777 ll = &cl->next; | |
1778 } | |
1779 | |
1780 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
1781 if (cl == NULL) { | |
1782 return NGX_ERROR; | |
1783 } | |
1784 | |
1785 *ll = cl; | |
1786 | |
1787 cl->buf->flush = 1; | |
1788 cl->buf->memory = 1; | |
1789 | |
1790 b = &u->buffer; | |
1791 | |
1792 cl->buf->pos = b->last; | |
1793 b->last += bytes; | |
1794 cl->buf->last = b->last; | |
1795 | |
1796 if (u->length == NGX_MAX_SIZE_T_VALUE) { | |
1797 return NGX_OK; | |
1798 } | |
1799 | |
1800 u->length -= bytes; | |
1801 | |
1802 return NGX_OK; | |
1803 } | |
1804 | |
1805 | |
1806 static void | |
509 | 1807 ngx_http_upstream_process_downstream(ngx_http_request_t *r) |
1808 { | |
1809 ngx_http_upstream_process_body(r->connection->write); | |
1810 } | |
1811 | |
1812 | |
1813 static void | |
487 | 1814 ngx_http_upstream_process_body(ngx_event_t *ev) |
479 | 1815 { |
509 | 1816 ngx_event_pipe_t *p; |
583 | 1817 ngx_connection_t *c, *downstream; |
1098 | 1818 ngx_http_log_ctx_t *ctx; |
479 | 1819 ngx_http_request_t *r; |
1820 ngx_http_upstream_t *u; | |
1821 | |
1822 c = ev->data; | |
1823 r = c->data; | |
1824 u = r->upstream; | |
583 | 1825 downstream = r->connection; |
479 | 1826 |
1827 if (ev->write) { | |
483 | 1828 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1829 "http upstream process downstream"); | |
1830 c->log->action = "sending to client"; | |
577 | 1831 |
479 | 1832 } else { |
483 | 1833 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1834 "http upstream process upstream"); | |
1835 c->log->action = "reading upstream"; | |
1098 | 1836 |
1837 ctx = c->log->data; | |
1838 ctx->current_request = r; | |
479 | 1839 } |
577 | 1840 |
581 | 1841 p = u->pipe; |
479 | 1842 |
1843 if (ev->timedout) { | |
1844 if (ev->write) { | |
527 | 1845 if (ev->delayed) { |
1846 | |
1847 ev->timedout = 0; | |
1848 ev->delayed = 0; | |
1849 | |
1850 if (!ev->ready) { | |
1851 ngx_add_timer(ev, p->send_timeout); | |
1852 | |
1853 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) | |
1854 { | |
1855 ngx_http_upstream_finalize_request(r, u, 0); | |
1856 return; | |
1857 } | |
1858 | |
1859 return; | |
1860 } | |
1861 | |
1862 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { | |
583 | 1863 |
1864 if (downstream->destroyed) { | |
1865 return; | |
1866 } | |
1867 | |
527 | 1868 ngx_http_upstream_finalize_request(r, u, 0); |
1869 return; | |
1870 } | |
1871 | |
1872 } else { | |
1873 p->downstream_error = 1; | |
577 | 1874 c->timedout = 1; |
611 | 1875 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
527 | 1876 } |
479 | 1877 |
1878 } else { | |
577 | 1879 p->upstream_error = 1; |
611 | 1880 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
479 | 1881 } |
1882 | |
1883 } else { | |
527 | 1884 if (ev->write && ev->delayed) { |
1885 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1886 "http downstream delayed"); | |
1887 | |
1888 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) { | |
1889 return; | |
1890 } | |
1891 | |
1892 return; | |
1893 } | |
1894 | |
479 | 1895 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { |
583 | 1896 |
1897 if (downstream->destroyed) { | |
1898 return; | |
1899 } | |
1900 | |
479 | 1901 ngx_http_upstream_finalize_request(r, u, 0); |
1902 return; | |
1903 } | |
1904 } | |
577 | 1905 |
479 | 1906 if (u->peer.connection) { |
1907 | |
1908 #if (NGX_HTTP_FILE_CACHE) | |
1909 | |
1910 if (p->upstream_done && u->cachable) { | |
1911 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
1912 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1913 ngx_http_upstream_finalize_request(r, u, 0); | |
1914 return; | |
1915 } | |
1916 | |
1917 } else if (p->upstream_eof && u->cachable) { | |
1918 | |
1919 /* TODO: check length & update cache */ | |
1920 | |
1921 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
1922 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1923 ngx_http_upstream_finalize_request(r, u, 0); | |
1924 return; | |
1925 } | |
1926 } | |
1927 | |
1928 #endif | |
1929 | |
1930 if (p->upstream_done || p->upstream_eof || p->upstream_error) { | |
483 | 1931 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1932 "http upstream exit: %p", p->out); | |
479 | 1933 #if 0 |
1934 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1935 #endif | |
1936 ngx_http_upstream_finalize_request(r, u, 0); | |
1937 return; | |
1938 } | |
1939 } | |
1940 | |
1941 if (p->downstream_error) { | |
483 | 1942 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1943 "http upstream downstream error"); | |
479 | 1944 |
1945 if (!u->cachable && u->peer.connection) { | |
1946 ngx_http_upstream_finalize_request(r, u, 0); | |
1947 } | |
1948 } | |
1949 } | |
1950 | |
1951 | |
487 | 1952 static void |
1953 ngx_http_upstream_dummy_handler(ngx_event_t *wev) | |
479 | 1954 { |
1955 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
1956 "http upstream dummy handler"); | |
1957 } | |
1958 | |
1959 | |
487 | 1960 static void |
1961 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u, | |
1962 ngx_uint_t ft_type) | |
479 | 1963 { |
884 | 1964 ngx_uint_t status, state; |
479 | 1965 |
1966 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
884 | 1967 "http next upstream, %xi", ft_type); |
479 | 1968 |
1969 #if 0 | |
1970 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1971 #endif | |
1972 | |
525 | 1973 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) { |
884 | 1974 state = NGX_PEER_NEXT; |
525 | 1975 } else { |
884 | 1976 state = NGX_PEER_FAILED; |
479 | 1977 } |
525 | 1978 |
884 | 1979 u->peer.free(&u->peer, u->peer.data, state); |
525 | 1980 |
479 | 1981 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) { |
1982 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT, | |
1983 "upstream timed out"); | |
1984 } | |
577 | 1985 |
479 | 1986 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) { |
1987 status = 0; | |
1988 | |
1989 } else { | |
1990 switch(ft_type) { | |
1991 | |
1992 case NGX_HTTP_UPSTREAM_FT_TIMEOUT: | |
1993 status = NGX_HTTP_GATEWAY_TIME_OUT; | |
1994 break; | |
1995 | |
1996 case NGX_HTTP_UPSTREAM_FT_HTTP_500: | |
1997 status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
1998 break; | |
1999 | |
2000 case NGX_HTTP_UPSTREAM_FT_HTTP_404: | |
2001 status = NGX_HTTP_NOT_FOUND; | |
2002 break; | |
2003 | |
2004 /* | |
2005 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING | |
2006 * never reach here | |
2007 */ | |
2008 | |
2009 default: | |
2010 status = NGX_HTTP_BAD_GATEWAY; | |
2011 } | |
2012 } | |
2013 | |
583 | 2014 if (r->connection->error) { |
479 | 2015 ngx_http_upstream_finalize_request(r, u, |
2016 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
2017 return; | |
2018 } | |
2019 | |
2020 if (status) { | |
2021 u->state->status = status; | |
2022 | |
525 | 2023 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) { |
479 | 2024 |
2025 #if (NGX_HTTP_CACHE) | |
2026 | |
2027 if (u->stale && (u->conf->use_stale & ft_type)) { | |
2028 ngx_http_upstream_finalize_request(r, u, | |
525 | 2029 ngx_http_send_cached_response(r)); |
479 | 2030 return; |
2031 } | |
2032 | |
2033 #endif | |
2034 | |
2035 ngx_http_upstream_finalize_request(r, u, status); | |
2036 return; | |
2037 } | |
2038 } | |
2039 | |
2040 if (u->peer.connection) { | |
2041 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2042 "close http upstream connection: %d", | |
2043 u->peer.connection->fd); | |
577 | 2044 #if (NGX_HTTP_SSL) |
884 | 2045 |
577 | 2046 if (u->peer.connection->ssl) { |
884 | 2047 u->peer.connection->ssl->no_wait_shutdown = 1; |
2048 u->peer.connection->ssl->no_send_shutdown = 1; | |
2049 | |
2050 (void) ngx_ssl_shutdown(u->peer.connection); | |
577 | 2051 } |
2052 #endif | |
884 | 2053 |
479 | 2054 ngx_close_connection(u->peer.connection); |
2055 } | |
2056 | |
2057 #if 0 | |
2058 if (u->conf->busy_lock && !u->busy_locked) { | |
2059 ngx_http_upstream_busy_lock(p); | |
2060 return; | |
2061 } | |
2062 #endif | |
2063 | |
2064 ngx_http_upstream_connect(r, u); | |
2065 } | |
2066 | |
2067 | |
487 | 2068 static void |
569 | 2069 ngx_http_upstream_cleanup(void *data) |
2070 { | |
2071 ngx_http_request_t *r = data; | |
2072 | |
2073 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2074 "cleanup http upstream request: \"%V\"", &r->uri); | |
2075 | |
2076 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE); | |
2077 } | |
2078 | |
2079 | |
2080 static void | |
487 | 2081 ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
2082 ngx_http_upstream_t *u, ngx_int_t rc) | |
479 | 2083 { |
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2084 ngx_time_t *tp; |
563 | 2085 |
483 | 2086 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
2087 "finalize http upstream request: %i", rc); | |
479 | 2088 |
569 | 2089 *u->cleanup = NULL; |
2090 | |
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2091 if (u->state->response_sec) { |
563 | 2092 tp = ngx_timeofday(); |
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2093 u->state->response_sec = tp->sec - u->state->response_sec; |
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2094 u->state->response_msec = tp->msec - u->state->response_msec; |
563 | 2095 } |
2096 | |
479 | 2097 u->finalize_request(r, rc); |
2098 | |
884 | 2099 u->peer.free(&u->peer, u->peer.data, 0); |
2100 | |
479 | 2101 if (u->peer.connection) { |
884 | 2102 |
577 | 2103 #if (NGX_HTTP_SSL) |
2104 | |
2105 /* TODO: do not shutdown persistent connection */ | |
2106 | |
2107 if (u->peer.connection->ssl) { | |
884 | 2108 |
2109 /* | |
2110 * We send the "close notify" shutdown alert to the upstream only | |
2111 * and do not wait its "close notify" shutdown alert. | |
2112 * It is acceptable according to the TLS standard. | |
2113 */ | |
2114 | |
2115 u->peer.connection->ssl->no_wait_shutdown = 1; | |
2116 | |
2117 (void) ngx_ssl_shutdown(u->peer.connection); | |
577 | 2118 } |
2119 #endif | |
884 | 2120 |
2121 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2122 "close http upstream connection: %d", | |
2123 u->peer.connection->fd); | |
2124 | |
479 | 2125 ngx_close_connection(u->peer.connection); |
2126 } | |
2127 | |
483 | 2128 u->peer.connection = NULL; |
2129 | |
563 | 2130 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE)) |
479 | 2131 { |
2132 rc = 0; | |
2133 } | |
2134 | |
581 | 2135 if (u->pipe && u->pipe->temp_file) { |
479 | 2136 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
2137 "http upstream temp fd: %d", | |
581 | 2138 u->pipe->temp_file->file.fd); |
479 | 2139 } |
2140 | |
2141 #if 0 | |
2142 if (u->cache) { | |
2143 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
483 | 2144 "http upstream cache fd: %d", |
479 | 2145 u->cache->ctx.file.fd); |
2146 } | |
2147 #endif | |
2148 | |
515 | 2149 if (rc == NGX_DECLINED) { |
2150 return; | |
2151 } | |
2152 | |
483 | 2153 r->connection->log->action = "sending to client"; |
2154 | |
629 | 2155 if (rc == 0 && r == r->main && !r->post_action) { |
581 | 2156 rc = ngx_http_send_special(r, NGX_HTTP_LAST); |
479 | 2157 } |
2158 | |
2159 ngx_http_finalize_request(r, rc); | |
2160 } | |
2161 | |
2162 | |
509 | 2163 static ngx_int_t |
2164 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2165 ngx_uint_t offset) | |
577 | 2166 { |
509 | 2167 ngx_table_elt_t **ph; |
577 | 2168 |
509 | 2169 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset); |
2170 | |
2171 if (*ph == NULL) { | |
2172 *ph = h; | |
2173 } | |
2174 | |
2175 return NGX_OK; | |
2176 } | |
2177 | |
2178 | |
2179 static ngx_int_t | |
2180 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
2181 ngx_table_elt_t *h, ngx_uint_t offset) | |
2182 { | |
2183 ngx_array_t *pa; | |
2184 ngx_table_elt_t **ph; | |
2185 | |
2186 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset); | |
2187 | |
2188 if (pa->elts == NULL) { | |
2189 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
2190 { | |
2191 return NGX_ERROR; | |
2192 } | |
2193 } | |
2194 | |
2195 ph = ngx_array_push(pa); | |
2196 if (ph == NULL) { | |
2197 return NGX_ERROR; | |
2198 } | |
2199 | |
2200 *ph = h; | |
2201 | |
2202 return NGX_OK; | |
2203 } | |
2204 | |
2205 | |
2206 static ngx_int_t | |
2207 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2208 ngx_uint_t offset) | |
2209 { | |
2210 return NGX_OK; | |
2211 } | |
2212 | |
2213 | |
2214 static ngx_int_t | |
527 | 2215 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h, |
2216 ngx_uint_t offset) | |
577 | 2217 { |
527 | 2218 ngx_int_t n; |
2219 | |
2220 r->upstream->headers_in.x_accel_limit_rate = h; | |
2221 | |
2222 n = ngx_atoi(h->value.data, h->value.len); | |
2223 | |
2224 if (n != NGX_ERROR) { | |
2225 r->limit_rate = (size_t) n; | |
2226 } | |
2227 | |
2228 return NGX_OK; | |
2229 } | |
2230 | |
2231 | |
2232 static ngx_int_t | |
649 | 2233 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h, |
2234 ngx_uint_t offset) | |
2235 { | |
2236 u_char c0, c1, c2; | |
2237 | |
2238 if (r->upstream->conf->change_buffering) { | |
2239 | |
2240 if (h->value.len == 2) { | |
2241 c0 = ngx_tolower(h->value.data[0]); | |
2242 c1 = ngx_tolower(h->value.data[1]); | |
2243 | |
2244 if (c0 == 'n' && c1 == 'o') { | |
2245 r->upstream->buffering = 0; | |
2246 } | |
2247 | |
2248 } else if (h->value.len == 3) { | |
2249 c0 = ngx_tolower(h->value.data[0]); | |
2250 c1 = ngx_tolower(h->value.data[1]); | |
2251 c2 = ngx_tolower(h->value.data[2]); | |
2252 | |
2253 if (c0 == 'y' && c1 == 'e' && c2 == 's') { | |
2254 r->upstream->buffering = 1; | |
2255 } | |
2256 } | |
2257 } | |
2258 | |
2259 return NGX_OK; | |
2260 } | |
2261 | |
2262 | |
2263 static ngx_int_t | |
657 | 2264 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h, |
2265 ngx_uint_t offset) | |
2266 { | |
2267 r->headers_out.override_charset = &h->value; | |
2268 | |
2269 return NGX_OK; | |
2270 } | |
2271 | |
2272 | |
2273 static ngx_int_t | |
509 | 2274 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
2275 ngx_uint_t offset) | |
2276 { | |
573 | 2277 ngx_table_elt_t *ho, **ph; |
509 | 2278 |
2279 ho = ngx_list_push(&r->headers_out.headers); | |
2280 if (ho == NULL) { | |
2281 return NGX_ERROR; | |
2282 } | |
2283 | |
2284 *ho = *h; | |
2285 | |
573 | 2286 if (offset) { |
2287 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset); | |
2288 *ph = ho; | |
2289 } | |
2290 | |
509 | 2291 return NGX_OK; |
2292 } | |
2293 | |
2294 | |
2295 static ngx_int_t | |
2296 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
2297 ngx_table_elt_t *h, ngx_uint_t offset) | |
2298 { | |
2299 ngx_array_t *pa; | |
2300 ngx_table_elt_t *ho, **ph; | |
2301 | |
2302 pa = (ngx_array_t *) ((char *) &r->headers_out + offset); | |
2303 | |
2304 if (pa->elts == NULL) { | |
2305 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
2306 { | |
2307 return NGX_ERROR; | |
2308 } | |
2309 } | |
2310 | |
2311 ph = ngx_array_push(pa); | |
2312 if (ph == NULL) { | |
2313 return NGX_ERROR; | |
2314 } | |
2315 | |
2316 ho = ngx_list_push(&r->headers_out.headers); | |
2317 if (ho == NULL) { | |
2318 return NGX_ERROR; | |
2319 } | |
2320 | |
2321 *ho = *h; | |
2322 *ph = ho; | |
2323 | |
2324 return NGX_OK; | |
2325 } | |
2326 | |
2327 | |
2328 static ngx_int_t | |
2329 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2330 ngx_uint_t offset) | |
2331 { | |
657 | 2332 u_char *p, *last; |
2333 | |
2334 r->headers_out.content_type_len = h->value.len; | |
509 | 2335 r->headers_out.content_type = h->value; |
2336 | |
657 | 2337 for (p = h->value.data; *p; p++) { |
2338 | |
2339 if (*p != ';') { | |
2340 continue; | |
2341 } | |
2342 | |
2343 last = p; | |
2344 | |
2345 while (*++p == ' ') { /* void */ } | |
2346 | |
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
Igor Sysoev <igor@sysoev.ru>
parents:
1098
diff
changeset
|
2347 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) { |
657 | 2348 continue; |
2349 } | |
2350 | |
2351 p += 8; | |
2352 | |
2353 r->headers_out.content_type_len = last - h->value.data; | |
2354 | |
2355 r->headers_out.charset.len = h->value.data + h->value.len - p; | |
2356 r->headers_out.charset.data = p; | |
1143
c6c42497106c
fix segfault if upstream sends trailing ";" in "charset="
Igor Sysoev <igor@sysoev.ru>
parents:
1109
diff
changeset
|
2357 |
c6c42497106c
fix segfault if upstream sends trailing ";" in "charset="
Igor Sysoev <igor@sysoev.ru>
parents:
1109
diff
changeset
|
2358 return NGX_OK; |
657 | 2359 } |
2360 | |
509 | 2361 return NGX_OK; |
2362 } | |
2363 | |
2364 | |
2365 static ngx_int_t | |
2366 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2367 ngx_uint_t offset) | |
2368 { | |
2369 ngx_table_elt_t *ho; | |
2370 | |
2371 ho = ngx_list_push(&r->headers_out.headers); | |
2372 if (ho == NULL) { | |
2373 return NGX_ERROR; | |
2374 } | |
2375 | |
2376 *ho = *h; | |
2377 | |
2378 r->headers_out.content_length = ho; | |
2379 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len); | |
2380 | |
2381 return NGX_OK; | |
2382 } | |
2383 | |
2384 | |
2385 static ngx_int_t | |
2386 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2387 ngx_uint_t offset) | |
2388 { | |
2389 ngx_int_t rc; | |
2390 ngx_table_elt_t *ho; | |
2391 | |
2392 ho = ngx_list_push(&r->headers_out.headers); | |
2393 if (ho == NULL) { | |
2394 return NGX_ERROR; | |
2395 } | |
2396 | |
2397 *ho = *h; | |
2398 | |
2399 if (r->upstream->rewrite_redirect) { | |
2400 rc = r->upstream->rewrite_redirect(r, ho, 0); | |
2401 | |
529 | 2402 if (rc == NGX_DECLINED) { |
2403 return NGX_OK; | |
2404 } | |
2405 | |
509 | 2406 if (rc == NGX_OK) { |
2407 r->headers_out.location = ho; | |
2408 | |
2409 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2410 "rewritten location: \"%V\"", &ho->value); | |
2411 } | |
2412 | |
2413 return rc; | |
2414 } | |
2415 | |
2416 /* | |
2417 * we do not set r->headers_out.location here to avoid the handling | |
2418 * the local redirects without a host name by ngx_http_header_filter() | |
2419 */ | |
2420 | |
2421 return NGX_OK; | |
2422 } | |
2423 | |
2424 | |
2425 static ngx_int_t | |
2426 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2427 ngx_uint_t offset) | |
2428 { | |
2429 u_char *p; | |
2430 ngx_int_t rc; | |
2431 ngx_table_elt_t *ho; | |
2432 | |
2433 ho = ngx_list_push(&r->headers_out.headers); | |
2434 if (ho == NULL) { | |
2435 return NGX_ERROR; | |
2436 } | |
2437 | |
2438 *ho = *h; | |
2439 | |
2440 if (r->upstream->rewrite_redirect) { | |
2441 | |
2442 p = (u_char *) ngx_strstr(ho->value.data, "url="); | |
2443 | |
2444 if (p) { | |
2445 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data); | |
2446 | |
2447 } else { | |
2448 return NGX_OK; | |
2449 } | |
2450 | |
529 | 2451 if (rc == NGX_DECLINED) { |
2452 return NGX_OK; | |
2453 } | |
2454 | |
509 | 2455 #if (NGX_DEBUG) |
2456 if (rc == NGX_OK) { | |
2457 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2458 "rewritten refresh: \"%V\"", &ho->value); | |
2459 } | |
2460 #endif | |
2461 | |
2462 return rc; | |
2463 } | |
2464 | |
2465 return NGX_OK; | |
2466 } | |
2467 | |
2468 | |
2469 #if (NGX_HTTP_GZIP) | |
2470 | |
2471 static ngx_int_t | |
2472 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
2473 ngx_table_elt_t *h, ngx_uint_t offset) | |
2474 { | |
2475 ngx_table_elt_t *ho; | |
2476 | |
2477 ho = ngx_list_push(&r->headers_out.headers); | |
2478 if (ho == NULL) { | |
2479 return NGX_ERROR; | |
2480 } | |
2481 | |
2482 *ho = *h; | |
2483 | |
2484 r->headers_out.content_encoding = ho; | |
2485 | |
2486 return NGX_OK; | |
2487 } | |
2488 | |
2489 #endif | |
2490 | |
2491 | |
487 | 2492 static ngx_int_t |
573 | 2493 ngx_http_upstream_add_variables(ngx_conf_t *cf) |
479 | 2494 { |
880 | 2495 ngx_http_variable_t *var, *v; |
479 | 2496 |
573 | 2497 for (v = ngx_http_upstream_vars; v->name.len; v++) { |
2498 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
2499 if (var == NULL) { | |
2500 return NGX_ERROR; | |
2501 } | |
2502 | |
637 | 2503 var->get_handler = v->get_handler; |
573 | 2504 var->data = v->data; |
2505 } | |
2506 | |
479 | 2507 return NGX_OK; |
2508 } | |
509 | 2509 |
2510 | |
573 | 2511 static ngx_int_t |
2512 ngx_http_upstream_status_variable(ngx_http_request_t *r, | |
2513 ngx_http_variable_value_t *v, uintptr_t data) | |
2514 { | |
2515 u_char *p; | |
2516 size_t len; | |
2517 ngx_uint_t i; | |
2518 ngx_http_upstream_state_t *state; | |
2519 | |
2520 v->valid = 1; | |
2521 v->no_cachable = 0; | |
2522 v->not_found = 0; | |
2523 | |
1168
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2524 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) { |
573 | 2525 v->not_found = 1; |
2526 return NGX_OK; | |
2527 } | |
2528 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2529 len = r->upstream_states->nelts * (3 + 2); |
573 | 2530 |
2531 p = ngx_palloc(r->pool, len); | |
2532 if (p == NULL) { | |
2533 return NGX_ERROR; | |
2534 } | |
2535 | |
2536 v->data = p; | |
2537 | |
2538 i = 0; | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2539 state = r->upstream_states->elts; |
573 | 2540 |
2541 for ( ;; ) { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2542 if (state[i].status) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2543 p = ngx_sprintf(p, "%ui", state[i].status); |
573 | 2544 |
2545 } else { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2546 *p++ = '-'; |
573 | 2547 } |
2548 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2549 if (++i == r->upstream_states->nelts) { |
573 | 2550 break; |
2551 } | |
2552 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2553 if (state[i].peer) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2554 *p++ = ','; |
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2555 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2556 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2557 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2558 *p++ = ' '; |
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2559 *p++ = ':'; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2560 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2561 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2562 if (++i == r->upstream_states->nelts) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2563 break; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2564 } |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2565 |
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2566 continue; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2567 } |
573 | 2568 } |
2569 | |
2570 v->len = p - v->data; | |
2571 | |
2572 return NGX_OK; | |
2573 } | |
2574 | |
2575 | |
2576 static ngx_int_t | |
2577 ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
2578 ngx_http_variable_value_t *v, uintptr_t data) | |
2579 { | |
2580 u_char *p; | |
2581 size_t len; | |
2582 ngx_uint_t i; | |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2583 ngx_msec_int_t ms; |
573 | 2584 ngx_http_upstream_state_t *state; |
2585 | |
2586 v->valid = 1; | |
2587 v->no_cachable = 0; | |
2588 v->not_found = 0; | |
2589 | |
1168
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2590 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) { |
573 | 2591 v->not_found = 1; |
2592 return NGX_OK; | |
2593 } | |
2594 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2595 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2); |
573 | 2596 |
2597 p = ngx_palloc(r->pool, len); | |
2598 if (p == NULL) { | |
2599 return NGX_ERROR; | |
2600 } | |
2601 | |
2602 v->data = p; | |
2603 | |
2604 i = 0; | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2605 state = r->upstream_states->elts; |
573 | 2606 |
2607 for ( ;; ) { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2608 if (state[i].status) { |
889
a9a7e4b1a72b
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Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2609 ms = state[i].response_sec * 1000 + state[i].response_msec; |
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2610 ms = (ms >= 0) ? ms : 0; |
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2611 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000); |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2612 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2613 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2614 *p++ = '-'; |
573 | 2615 } |
2616 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2617 if (++i == r->upstream_states->nelts) { |
573 | 2618 break; |
2619 } | |
2620 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2621 if (state[i].peer) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2622 *p++ = ','; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2623 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2624 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2625 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2626 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2627 *p++ = ':'; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2628 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2629 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2630 if (++i == r->upstream_states->nelts) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2631 break; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2632 } |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2633 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2634 continue; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2635 } |
573 | 2636 } |
2637 | |
2638 v->len = p - v->data; | |
2639 | |
2640 return NGX_OK; | |
2641 } | |
2642 | |
2643 | |
1162 | 2644 ngx_int_t |
2645 ngx_http_upstream_header_variable(ngx_http_request_t *r, | |
2646 ngx_http_variable_value_t *v, uintptr_t data) | |
2647 { | |
2648 if (r->upstream == NULL) { | |
2649 v->not_found = 1; | |
2650 return NGX_OK; | |
2651 } | |
2652 | |
2653 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data, | |
2654 &r->upstream->headers_in.headers.part, | |
2655 sizeof("upstream_http_") - 1); | |
2656 } | |
2657 | |
2658 | |
651 | 2659 static char * |
2660 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) | |
2661 { | |
884 | 2662 char *rv; |
2663 void *mconf; | |
2664 ngx_str_t *value; | |
2665 ngx_url_t u; | |
2666 ngx_uint_t m; | |
2667 ngx_conf_t pcf; | |
2668 ngx_http_module_t *module; | |
2669 ngx_http_conf_ctx_t *ctx, *http_ctx; | |
2670 ngx_http_upstream_srv_conf_t *uscf; | |
2671 | |
2672 ngx_memzero(&u, sizeof(ngx_url_t)); | |
2673 | |
2674 value = cf->args->elts; | |
2675 u.host = value[1]; | |
2676 u.no_resolve = 1; | |
2677 | |
2678 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE | |
2679 |NGX_HTTP_UPSTREAM_WEIGHT | |
2680 |NGX_HTTP_UPSTREAM_MAX_FAILS | |
2681 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT | |
2682 |NGX_HTTP_UPSTREAM_DOWN | |
2683 |NGX_HTTP_UPSTREAM_BACKUP); | |
2684 if (uscf == NULL) { | |
2685 return NGX_CONF_ERROR; | |
2686 } | |
2687 | |
651 | 2688 |
2689 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); | |
2690 if (ctx == NULL) { | |
2691 return NGX_CONF_ERROR; | |
2692 } | |
2693 | |
884 | 2694 http_ctx = cf->ctx; |
2695 ctx->main_conf = http_ctx->main_conf; | |
651 | 2696 |
2697 /* the upstream{}'s srv_conf */ | |
2698 | |
2699 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
2700 if (ctx->srv_conf == NULL) { | |
2701 return NGX_CONF_ERROR; | |
2702 } | |
2703 | |
2704 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf; | |
2705 | |
884 | 2706 uscf->srv_conf = ctx->srv_conf; |
2707 | |
651 | 2708 |
2709 /* the upstream{}'s loc_conf */ | |
2710 | |
2711 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
2712 if (ctx->loc_conf == NULL) { | |
2713 return NGX_CONF_ERROR; | |
2714 } | |
2715 | |
2716 for (m = 0; ngx_modules[m]; m++) { | |
2717 if (ngx_modules[m]->type != NGX_HTTP_MODULE) { | |
2718 continue; | |
2719 } | |
2720 | |
2721 module = ngx_modules[m]->ctx; | |
2722 | |
884 | 2723 if (module->create_srv_conf) { |
2724 mconf = module->create_srv_conf(cf); | |
2725 if (mconf == NULL) { | |
2726 return NGX_CONF_ERROR; | |
2727 } | |
2728 | |
2729 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; | |
2730 } | |
2731 | |
651 | 2732 if (module->create_loc_conf) { |
2733 mconf = module->create_loc_conf(cf); | |
2734 if (mconf == NULL) { | |
2735 return NGX_CONF_ERROR; | |
2736 } | |
2737 | |
2738 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf; | |
2739 } | |
2740 } | |
2741 | |
2742 | |
2743 /* parse inside upstream{} */ | |
2744 | |
2745 pcf = *cf; | |
2746 cf->ctx = ctx; | |
2747 cf->cmd_type = NGX_HTTP_UPS_CONF; | |
2748 | |
2749 rv = ngx_conf_parse(cf, NULL); | |
2750 | |
2751 *cf = pcf; | |
2752 | |
2753 if (rv != NGX_CONF_OK) { | |
2754 return rv; | |
2755 } | |
2756 | |
2757 if (uscf->servers == NULL) { | |
2758 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
2759 "no servers are inside upstream"); | |
2760 return NGX_CONF_ERROR; | |
2761 } | |
2762 | |
2763 return rv; | |
2764 } | |
2765 | |
2766 | |
2767 static char * | |
2768 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
2769 { | |
2770 ngx_http_upstream_srv_conf_t *uscf = conf; | |
2771 | |
884 | 2772 time_t fail_timeout; |
2773 ngx_str_t *value, s; | |
2774 ngx_url_t u; | |
2775 ngx_int_t weight, max_fails; | |
2776 ngx_uint_t i; | |
2777 ngx_http_upstream_server_t *us; | |
651 | 2778 |
2779 if (uscf->servers == NULL) { | |
884 | 2780 uscf->servers = ngx_array_create(cf->pool, 4, |
2781 sizeof(ngx_http_upstream_server_t)); | |
651 | 2782 if (uscf->servers == NULL) { |
2783 return NGX_CONF_ERROR; | |
2784 } | |
2785 } | |
2786 | |
884 | 2787 us = ngx_array_push(uscf->servers); |
2788 if (us == NULL) { | |
651 | 2789 return NGX_CONF_ERROR; |
2790 } | |
2791 | |
884 | 2792 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); |
2793 | |
651 | 2794 value = cf->args->elts; |
2795 | |
2796 ngx_memzero(&u, sizeof(ngx_url_t)); | |
2797 | |
2798 u.url = value[1]; | |
906 | 2799 u.default_port = 80; |
651 | 2800 |
2801 if (ngx_parse_url(cf, &u) != NGX_OK) { | |
2802 if (u.err) { | |
2803 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
2804 "%s in upstream \"%V\"", u.err, &u.url); | |
2805 } | |
2806 | |
2807 return NGX_CONF_ERROR; | |
2808 } | |
2809 | |
663 | 2810 weight = 1; |
884 | 2811 max_fails = 1; |
2812 fail_timeout = 10; | |
2813 | |
2814 for (i = 2; i < cf->args->nelts; i++) { | |
2815 | |
2816 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) { | |
2817 | |
2818 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) { | |
2819 goto invalid; | |
2820 } | |
2821 | |
2822 weight = ngx_atoi(&value[i].data[7], value[i].len - 7); | |
663 | 2823 |
2824 if (weight == NGX_ERROR || weight == 0) { | |
2825 goto invalid; | |
2826 } | |
2827 | |
884 | 2828 continue; |
2829 } | |
2830 | |
2831 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) { | |
2832 | |
2833 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) { | |
2834 goto invalid; | |
2835 } | |
2836 | |
2837 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10); | |
2838 | |
2839 if (max_fails == NGX_ERROR) { | |
2840 goto invalid; | |
2841 } | |
2842 | |
2843 continue; | |
663 | 2844 } |
884 | 2845 |
2846 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) { | |
2847 | |
2848 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) { | |
2849 goto invalid; | |
2850 } | |
2851 | |
2852 s.len = value[i].len - 13; | |
2853 s.data = &value[i].data[13]; | |
2854 | |
2855 fail_timeout = ngx_parse_time(&s, 1); | |
2856 | |
2857 if (fail_timeout < 0) { | |
2858 goto invalid; | |
2859 } | |
2860 | |
2861 continue; | |
2862 } | |
2863 | |
2864 if (ngx_strncmp(value[i].data, "down", 4) == 0) { | |
2865 | |
2866 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) { | |
2867 goto invalid; | |
2868 } | |
2869 | |
2870 us->down = 1; | |
2871 | |
2872 continue; | |
2873 } | |
2874 | |
2875 goto invalid; | |
663 | 2876 } |
2877 | |
884 | 2878 us->addrs = u.addrs; |
2879 us->naddrs = u.naddrs; | |
2880 us->weight = weight; | |
2881 us->max_fails = max_fails; | |
2882 us->fail_timeout = fail_timeout; | |
651 | 2883 |
2884 return NGX_CONF_OK; | |
663 | 2885 |
2886 invalid: | |
2887 | |
884 | 2888 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
2889 "invalid parameter \"%V\"", &value[i]); | |
663 | 2890 |
2891 return NGX_CONF_ERROR; | |
651 | 2892 } |
2893 | |
2894 | |
2895 ngx_http_upstream_srv_conf_t * | |
884 | 2896 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags) |
651 | 2897 { |
2898 ngx_uint_t i; | |
884 | 2899 ngx_http_upstream_server_t *us; |
651 | 2900 ngx_http_upstream_srv_conf_t *uscf, **uscfp; |
2901 ngx_http_upstream_main_conf_t *umcf; | |
2902 | |
884 | 2903 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) { |
2904 | |
651 | 2905 if (ngx_parse_url(cf, u) != NGX_OK) { |
2906 if (u->err) { | |
2907 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
2908 "%s in upstream \"%V\"", u->err, &u->url); | |
2909 } | |
2910 | |
2911 return NULL; | |
2912 } | |
2913 } | |
2914 | |
2915 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module); | |
2916 | |
2917 uscfp = umcf->upstreams.elts; | |
2918 | |
2919 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
906 | 2920 |
2921 if (uscfp[i]->host.len != u->host.len | |
884 | 2922 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len) |
2923 != 0) | |
2924 { | |
651 | 2925 continue; |
2926 } | |
2927 | |
884 | 2928 if ((flags & NGX_HTTP_UPSTREAM_CREATE) |
2929 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE)) | |
651 | 2930 { |
884 | 2931 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
2932 "duplicate upstream \"%V\"", &u->host); | |
2933 return NULL; | |
651 | 2934 } |
884 | 2935 |
906 | 2936 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) { |
884 | 2937 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
906 | 2938 "upstream \"%V\" may not have port %d", |
2939 &u->host, u->port); | |
2940 return NULL; | |
2941 } | |
2942 | |
2943 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) { | |
2944 ngx_log_error(NGX_LOG_WARN, cf->log, 0, | |
2945 "upstream \"%V\" may not have port %d in %s:%ui", | |
2946 &u->host, uscfp[i]->port, | |
2947 uscfp[i]->file_name.data, uscfp[i]->line); | |
2948 return NULL; | |
2949 } | |
2950 | |
2951 if (uscfp[i]->port != u->port) { | |
2952 continue; | |
884 | 2953 } |
2954 | |
2955 return uscfp[i]; | |
651 | 2956 } |
2957 | |
2958 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t)); | |
2959 if (uscf == NULL) { | |
2960 return NULL; | |
2961 } | |
2962 | |
884 | 2963 uscf->flags = flags; |
651 | 2964 uscf->host = u->host; |
2965 uscf->file_name = cf->conf_file->file.name; | |
2966 uscf->line = cf->conf_file->line; | |
906 | 2967 uscf->port = u->port; |
2968 uscf->default_port = u->default_port; | |
884 | 2969 |
2970 if (u->naddrs == 1) { | |
2971 uscf->servers = ngx_array_create(cf->pool, 1, | |
2972 sizeof(ngx_http_upstream_server_t)); | |
2973 if (uscf->servers == NULL) { | |
2974 return NGX_CONF_ERROR; | |
2975 } | |
2976 | |
2977 us = ngx_array_push(uscf->servers); | |
2978 if (us == NULL) { | |
2979 return NGX_CONF_ERROR; | |
2980 } | |
2981 | |
2982 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); | |
2983 | |
2984 us->addrs = u->addrs; | |
2985 us->naddrs = u->naddrs; | |
2986 } | |
651 | 2987 |
2988 uscfp = ngx_array_push(&umcf->upstreams); | |
2989 if (uscfp == NULL) { | |
2990 return NULL; | |
2991 } | |
2992 | |
2993 *uscfp = uscf; | |
2994 | |
2995 return uscf; | |
2996 } | |
2997 | |
2998 | |
509 | 2999 static void * |
3000 ngx_http_upstream_create_main_conf(ngx_conf_t *cf) | |
3001 { | |
3002 ngx_http_upstream_main_conf_t *umcf; | |
3003 | |
3004 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t)); | |
3005 if (umcf == NULL) { | |
3006 return NULL; | |
3007 } | |
3008 | |
651 | 3009 if (ngx_array_init(&umcf->upstreams, cf->pool, 4, |
3010 sizeof(ngx_http_upstream_srv_conf_t *)) | |
3011 != NGX_OK) | |
3012 { | |
3013 return NGX_CONF_ERROR; | |
3014 } | |
3015 | |
509 | 3016 return umcf; |
3017 } | |
3018 | |
3019 | |
3020 static char * | |
651 | 3021 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf) |
509 | 3022 { |
3023 ngx_http_upstream_main_conf_t *umcf = conf; | |
3024 | |
651 | 3025 ngx_uint_t i; |
3026 ngx_array_t headers_in; | |
3027 ngx_hash_key_t *hk; | |
3028 ngx_hash_init_t hash; | |
884 | 3029 ngx_http_upstream_init_pt init; |
651 | 3030 ngx_http_upstream_header_t *header; |
3031 ngx_http_upstream_srv_conf_t **uscfp; | |
3032 | |
3033 uscfp = umcf->upstreams.elts; | |
3034 | |
3035 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
884 | 3036 |
3037 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream: | |
3038 ngx_http_upstream_init_round_robin; | |
3039 | |
3040 if (init(cf, uscfp[i]) != NGX_OK) { | |
651 | 3041 return NGX_CONF_ERROR; |
3042 } | |
3043 } | |
649 | 3044 |
663 | 3045 |
884 | 3046 /* upstream_headers_in_hash */ |
3047 | |
649 | 3048 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t)) |
3049 != NGX_OK) | |
509 | 3050 { |
3051 return NGX_CONF_ERROR; | |
3052 } | |
3053 | |
649 | 3054 for (header = ngx_http_upstream_headers_in; header->name.len; header++) { |
3055 hk = ngx_array_push(&headers_in); | |
3056 if (hk == NULL) { | |
3057 return NGX_CONF_ERROR; | |
3058 } | |
3059 | |
3060 hk->key = header->name; | |
3061 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len); | |
3062 hk->value = header; | |
3063 } | |
3064 | |
3065 hash.hash = &umcf->headers_in_hash; | |
3066 hash.key = ngx_hash_key_lc; | |
3067 hash.max_size = 512; | |
751
bae59a740c40
align hash bucket size to cache line
Igor Sysoev <igor@sysoev.ru>
parents:
750
diff
changeset
|
3068 hash.bucket_size = ngx_align(64, ngx_cacheline_size); |
649 | 3069 hash.name = "upstream_headers_in_hash"; |
3070 hash.pool = cf->pool; | |
3071 hash.temp_pool = NULL; | |
3072 | |
3073 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) { | |
3074 return NGX_CONF_ERROR; | |
3075 } | |
509 | 3076 |
3077 return NGX_CONF_OK; | |
3078 } |