Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.c @ 1851:056347360e14 stable-0.5
r1755, r1756, r1757 merge:
*) SSL_shutdown() never returns -1, on error it returns 0.
This fixes incidental "bad write retry" errors.
*) cleaning stale global SSL error
*) remove SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER, we never need it
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Tue, 08 Jan 2008 17:30:39 +0000 |
parents | 6b81bbc36eaf |
children | c7757ce0ae97 |
rev | line source |
---|---|
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); |
1381 | 36 static void ngx_http_upstream_store(ngx_http_request_t *r, |
37 ngx_http_upstream_t *u); | |
479 | 38 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev); |
39 static void ngx_http_upstream_next(ngx_http_request_t *r, | |
487 | 40 ngx_http_upstream_t *u, ngx_uint_t ft_type); |
569 | 41 static void ngx_http_upstream_cleanup(void *data); |
479 | 42 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
487 | 43 ngx_http_upstream_t *u, ngx_int_t rc); |
479 | 44 |
509 | 45 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r, |
46 ngx_table_elt_t *h, ngx_uint_t offset); | |
47 static ngx_int_t | |
48 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
49 ngx_table_elt_t *h, ngx_uint_t offset); | |
50 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, | |
51 ngx_table_elt_t *h, ngx_uint_t offset); | |
527 | 52 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, |
53 ngx_table_elt_t *h, ngx_uint_t offset); | |
649 | 54 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r, |
509 | 55 ngx_table_elt_t *h, ngx_uint_t offset); |
657 | 56 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r, |
57 ngx_table_elt_t *h, ngx_uint_t offset); | |
649 | 58 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r, |
509 | 59 ngx_table_elt_t *h, ngx_uint_t offset); |
60 static ngx_int_t | |
61 ngx_http_upstream_copy_multi_header_lines(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_type(ngx_http_request_t *r, | |
64 ngx_table_elt_t *h, ngx_uint_t offset); | |
65 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r, | |
66 ngx_table_elt_t *h, ngx_uint_t offset); | |
67 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r, | |
68 ngx_table_elt_t *h, ngx_uint_t offset); | |
69 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, | |
70 ngx_table_elt_t *h, ngx_uint_t offset); | |
71 #if (NGX_HTTP_GZIP) | |
72 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
73 ngx_table_elt_t *h, ngx_uint_t offset); | |
74 #endif | |
75 | |
573 | 76 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf); |
1181 | 77 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r, |
78 ngx_http_variable_value_t *v, uintptr_t data); | |
573 | 79 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r, |
80 ngx_http_variable_value_t *v, uintptr_t data); | |
81 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
82 ngx_http_variable_value_t *v, uintptr_t data); | |
83 | |
651 | 84 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy); |
85 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, | |
86 void *conf); | |
87 | |
509 | 88 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf); |
651 | 89 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf); |
509 | 90 |
577 | 91 #if (NGX_HTTP_SSL) |
591 | 92 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *, |
93 ngx_http_upstream_t *u, ngx_connection_t *c); | |
577 | 94 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c); |
95 #endif | |
96 | |
509 | 97 |
98 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = { | |
99 | |
100 { ngx_string("Status"), | |
101 ngx_http_upstream_process_header_line, | |
102 offsetof(ngx_http_upstream_headers_in_t, status), | |
649 | 103 ngx_http_upstream_copy_header_line, 0, 0 }, |
509 | 104 |
105 { ngx_string("Content-Type"), | |
106 ngx_http_upstream_process_header_line, | |
107 offsetof(ngx_http_upstream_headers_in_t, content_type), | |
673 | 108 ngx_http_upstream_copy_content_type, 0, 1 }, |
509 | 109 |
110 { ngx_string("Content-Length"), | |
111 ngx_http_upstream_process_header_line, | |
112 offsetof(ngx_http_upstream_headers_in_t, content_length), | |
515 | 113 ngx_http_upstream_copy_content_length, 0, 0 }, |
509 | 114 |
115 { ngx_string("Date"), | |
116 ngx_http_upstream_process_header_line, | |
117 offsetof(ngx_http_upstream_headers_in_t, date), | |
649 | 118 ngx_http_upstream_copy_header_line, |
119 offsetof(ngx_http_headers_out_t, date), 0 }, | |
509 | 120 |
1381 | 121 { ngx_string("Last-Modified"), |
122 ngx_http_upstream_process_header_line, | |
123 offsetof(ngx_http_upstream_headers_in_t, last_modified), | |
124 ngx_http_upstream_copy_header_line, | |
125 offsetof(ngx_http_headers_out_t, last_modified), 0 }, | |
126 | |
509 | 127 { ngx_string("Server"), |
128 ngx_http_upstream_process_header_line, | |
129 offsetof(ngx_http_upstream_headers_in_t, server), | |
649 | 130 ngx_http_upstream_copy_header_line, |
131 offsetof(ngx_http_headers_out_t, server), 0 }, | |
509 | 132 |
529 | 133 { ngx_string("WWW-Authenticate"), |
134 ngx_http_upstream_process_header_line, | |
135 offsetof(ngx_http_upstream_headers_in_t, www_authenticate), | |
136 ngx_http_upstream_copy_header_line, 0, 0 }, | |
137 | |
509 | 138 { ngx_string("Location"), |
139 ngx_http_upstream_ignore_header_line, 0, | |
515 | 140 ngx_http_upstream_rewrite_location, 0, 0 }, |
509 | 141 |
142 { ngx_string("Refresh"), | |
143 ngx_http_upstream_ignore_header_line, 0, | |
515 | 144 ngx_http_upstream_rewrite_refresh, 0, 0 }, |
145 | |
146 { ngx_string("Set-Cookie"), | |
147 ngx_http_upstream_ignore_header_line, 0, | |
531 | 148 ngx_http_upstream_copy_header_line, 0, 1 }, |
149 | |
150 { ngx_string("Content-Disposition"), | |
151 ngx_http_upstream_ignore_header_line, 0, | |
152 ngx_http_upstream_copy_header_line, 0, 1 }, | |
509 | 153 |
154 { ngx_string("Cache-Control"), | |
155 ngx_http_upstream_process_multi_header_lines, | |
156 offsetof(ngx_http_upstream_headers_in_t, cache_control), | |
157 ngx_http_upstream_copy_multi_header_lines, | |
515 | 158 offsetof(ngx_http_headers_out_t, cache_control), 1 }, |
509 | 159 |
573 | 160 { ngx_string("Expires"), |
161 ngx_http_upstream_process_header_line, | |
162 offsetof(ngx_http_upstream_headers_in_t, expires), | |
163 ngx_http_upstream_copy_header_line, | |
164 offsetof(ngx_http_headers_out_t, expires), 1 }, | |
165 | |
577 | 166 { ngx_string("Accept-Ranges"), |
167 ngx_http_upstream_process_header_line, | |
168 offsetof(ngx_http_upstream_headers_in_t, accept_ranges), | |
169 ngx_http_upstream_copy_header_line, | |
170 offsetof(ngx_http_headers_out_t, accept_ranges), 1 }, | |
171 | |
509 | 172 { ngx_string("Connection"), |
173 ngx_http_upstream_ignore_header_line, 0, | |
515 | 174 ngx_http_upstream_ignore_header_line, 0, 0 }, |
509 | 175 |
641 | 176 { ngx_string("Keep-Alive"), |
177 ngx_http_upstream_ignore_header_line, 0, | |
178 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
179 | |
509 | 180 { ngx_string("X-Powered-By"), |
181 ngx_http_upstream_ignore_header_line, 0, | |
649 | 182 ngx_http_upstream_copy_header_line, 0, 0 }, |
509 | 183 |
184 { ngx_string("X-Accel-Expires"), | |
185 ngx_http_upstream_process_header_line, | |
186 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires), | |
649 | 187 ngx_http_upstream_copy_header_line, 0, 0 }, |
515 | 188 |
189 { ngx_string("X-Accel-Redirect"), | |
190 ngx_http_upstream_process_header_line, | |
191 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect), | |
192 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
509 | 193 |
527 | 194 { ngx_string("X-Accel-Limit-Rate"), |
195 ngx_http_upstream_process_limit_rate, 0, | |
196 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
197 | |
649 | 198 { ngx_string("X-Accel-Buffering"), |
199 ngx_http_upstream_process_buffering, 0, | |
200 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
201 | |
657 | 202 { ngx_string("X-Accel-Charset"), |
203 ngx_http_upstream_process_charset, 0, | |
204 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
205 | |
509 | 206 #if (NGX_HTTP_GZIP) |
207 { ngx_string("Content-Encoding"), | |
208 ngx_http_upstream_process_header_line, | |
209 offsetof(ngx_http_upstream_headers_in_t, content_encoding), | |
515 | 210 ngx_http_upstream_copy_content_encoding, 0, 0 }, |
509 | 211 #endif |
212 | |
515 | 213 { ngx_null_string, NULL, 0, NULL, 0, 0 } |
509 | 214 }; |
479 | 215 |
216 | |
651 | 217 static ngx_command_t ngx_http_upstream_commands[] = { |
218 | |
219 { ngx_string("upstream"), | |
220 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1, | |
221 ngx_http_upstream, | |
222 0, | |
223 0, | |
224 NULL }, | |
225 | |
226 { ngx_string("server"), | |
884 | 227 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE, |
651 | 228 ngx_http_upstream_server, |
229 NGX_HTTP_SRV_CONF_OFFSET, | |
230 0, | |
231 NULL }, | |
232 | |
233 ngx_null_command | |
234 }; | |
235 | |
236 | |
237 static ngx_http_module_t ngx_http_upstream_module_ctx = { | |
573 | 238 ngx_http_upstream_add_variables, /* preconfiguration */ |
509 | 239 NULL, /* postconfiguration */ |
240 | |
241 ngx_http_upstream_create_main_conf, /* create main configuration */ | |
651 | 242 ngx_http_upstream_init_main_conf, /* init main configuration */ |
479 | 243 |
244 NULL, /* create server configuration */ | |
245 NULL, /* merge server configuration */ | |
246 | |
247 NULL, /* create location configuration */ | |
248 NULL /* merge location configuration */ | |
249 }; | |
577 | 250 |
479 | 251 |
252 ngx_module_t ngx_http_upstream_module = { | |
509 | 253 NGX_MODULE_V1, |
479 | 254 &ngx_http_upstream_module_ctx, /* module context */ |
651 | 255 ngx_http_upstream_commands, /* module directives */ |
479 | 256 NGX_HTTP_MODULE, /* module type */ |
541 | 257 NULL, /* init master */ |
479 | 258 NULL, /* init module */ |
541 | 259 NULL, /* init process */ |
260 NULL, /* init thread */ | |
261 NULL, /* exit thread */ | |
262 NULL, /* exit process */ | |
263 NULL, /* exit master */ | |
264 NGX_MODULE_V1_PADDING | |
479 | 265 }; |
266 | |
267 | |
573 | 268 static ngx_http_variable_t ngx_http_upstream_vars[] = { |
269 | |
1181 | 270 { ngx_string("upstream_addr"), NULL, |
271 ngx_http_upstream_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, | |
272 | |
637 | 273 { ngx_string("upstream_status"), NULL, |
583 | 274 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
573 | 275 |
637 | 276 { ngx_string("upstream_response_time"), NULL, |
583 | 277 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
573 | 278 |
637 | 279 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
573 | 280 }; |
281 | |
282 | |
487 | 283 void |
284 ngx_http_upstream_init(ngx_http_request_t *r) | |
479 | 285 { |
509 | 286 ngx_connection_t *c; |
569 | 287 ngx_http_cleanup_t *cln; |
509 | 288 ngx_http_upstream_t *u; |
289 ngx_http_core_loc_conf_t *clcf; | |
479 | 290 |
291 c = r->connection; | |
292 | |
293 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
294 "http init upstream, client timer: %d", c->read->timer_set); | |
295 | |
296 if (c->read->timer_set) { | |
297 ngx_del_timer(c->read); | |
298 } | |
299 | |
629 | 300 u = r->upstream; |
301 | |
302 if (!r->post_action && !u->conf->ignore_client_abort) { | |
615 | 303 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection; |
304 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection; | |
305 } | |
577 | 306 |
479 | 307 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { |
308 | |
309 if (!c->write->active) { | |
531 | 310 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT) |
311 == NGX_ERROR) | |
479 | 312 { |
313 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
314 return; | |
315 } | |
316 } | |
317 } | |
318 | |
537 | 319 if (r->request_body) { |
320 u->request_bufs = r->request_body->bufs; | |
321 } | |
509 | 322 |
884 | 323 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) { |
324 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
325 return; | |
326 } | |
327 | |
537 | 328 if (u->create_request(r) != NGX_OK) { |
479 | 329 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
330 return; | |
331 } | |
332 | |
509 | 333 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
479 | 334 |
335 u->output.sendfile = r->connection->sendfile; | |
336 u->output.pool = r->pool; | |
337 u->output.bufs.num = 1; | |
509 | 338 u->output.bufs.size = clcf->client_body_buffer_size; |
479 | 339 u->output.output_filter = ngx_chain_writer; |
340 u->output.filter_ctx = &u->writer; | |
341 | |
342 u->writer.pool = r->pool; | |
343 | |
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344 if (r->upstream_states == NULL) { |
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345 |
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346 r->upstream_states = ngx_array_create(r->pool, 1, |
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347 sizeof(ngx_http_upstream_state_t)); |
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348 if (r->upstream_states == NULL) { |
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349 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
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350 return; |
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351 } |
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352 |
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353 } else { |
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354 |
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355 u->state = ngx_array_push(r->upstream_states); |
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356 if (u->state == NULL) { |
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357 ngx_http_upstream_finalize_request(r, u, |
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358 NGX_HTTP_INTERNAL_SERVER_ERROR); |
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359 return; |
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360 } |
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361 |
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362 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); |
479 | 363 } |
364 | |
593 | 365 cln = ngx_http_cleanup_add(r, 0); |
569 | 366 if (cln == NULL) { |
367 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
368 return; | |
369 } | |
370 | |
371 cln->handler = ngx_http_upstream_cleanup; | |
372 cln->data = r; | |
373 u->cleanup = &cln->handler; | |
374 | |
1381 | 375 u->store = (u->conf->store || u->conf->store_lengths); |
376 | |
479 | 377 ngx_http_upstream_connect(r, u); |
378 } | |
379 | |
380 | |
487 | 381 static void |
509 | 382 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r) |
383 { | |
384 ngx_http_upstream_check_broken_connection(r, r->connection->read); | |
385 } | |
386 | |
387 | |
388 static void | |
389 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r) | |
390 { | |
391 ngx_http_upstream_check_broken_connection(r, r->connection->write); | |
392 } | |
393 | |
394 | |
395 static void | |
396 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r, | |
397 ngx_event_t *ev) | |
479 | 398 { |
399 int n; | |
400 char buf[1]; | |
577 | 401 ngx_err_t err; |
479 | 402 ngx_connection_t *c; |
403 ngx_http_upstream_t *u; | |
404 | |
527 | 405 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
406 "http upstream check client, write event:%d, \"%V\"", | |
407 ev->write, &r->uri); | |
479 | 408 |
509 | 409 c = r->connection; |
483 | 410 u = r->upstream; |
411 | |
583 | 412 if (c->error) { |
527 | 413 ngx_http_upstream_finalize_request(r, u, |
414 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
415 return; | |
416 } | |
417 | |
483 | 418 if (u->peer.connection == NULL) { |
419 return; | |
420 } | |
421 | |
479 | 422 #if (NGX_HAVE_KQUEUE) |
423 | |
424 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
425 | |
426 if (!ev->pending_eof) { | |
427 return; | |
428 } | |
429 | |
430 ev->eof = 1; | |
583 | 431 c->error = 1; |
479 | 432 |
433 if (ev->kq_errno) { | |
434 ev->error = 1; | |
435 } | |
436 | |
1714 | 437 if (!u->cacheable && !u->store && u->peer.connection) { |
479 | 438 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, |
527 | 439 "kevent() reported that client closed prematurely " |
440 "connection, so upstream connection is closed too"); | |
479 | 441 ngx_http_upstream_finalize_request(r, u, |
442 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
443 return; | |
444 } | |
445 | |
446 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
447 "kevent() reported that client closed " | |
448 "prematurely connection"); | |
449 | |
450 if (u->peer.connection == NULL) { | |
451 ngx_http_upstream_finalize_request(r, u, | |
452 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
453 return; | |
454 } | |
455 | |
456 return; | |
457 } | |
458 | |
459 #endif | |
460 | |
461 n = recv(c->fd, buf, 1, MSG_PEEK); | |
462 | |
463 err = ngx_socket_errno; | |
464 | |
1109 | 465 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err, |
466 "http upstream recv(): %d", n); | |
467 | |
479 | 468 /* |
469 * we do not need to disable the write event because | |
470 * that event has NGX_USE_CLEAR_EVENT type | |
471 */ | |
472 | |
473 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) { | |
474 return; | |
475 } | |
476 | |
477 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) { | |
478 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { | |
479 ngx_http_upstream_finalize_request(r, u, | |
480 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
481 return; | |
482 } | |
483 } | |
484 | |
485 if (n > 0) { | |
486 return; | |
487 } | |
488 | |
489 if (n == -1) { | |
490 if (err == NGX_EAGAIN) { | |
491 return; | |
492 } | |
493 | |
494 ev->error = 1; | |
495 | |
483 | 496 } else { /* n == 0 */ |
479 | 497 err = 0; |
498 } | |
499 | |
529 | 500 ev->eof = 1; |
583 | 501 c->error = 1; |
529 | 502 |
1714 | 503 if (!u->cacheable && !u->store && u->peer.connection) { |
479 | 504 ngx_log_error(NGX_LOG_INFO, ev->log, err, |
505 "client closed prematurely connection, " | |
506 "so upstream connection is closed too"); | |
507 ngx_http_upstream_finalize_request(r, u, | |
508 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
509 return; | |
510 } | |
511 | |
512 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
513 "client closed prematurely connection"); | |
514 | |
515 if (u->peer.connection == NULL) { | |
516 ngx_http_upstream_finalize_request(r, u, | |
517 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
518 return; | |
519 } | |
520 } | |
521 | |
522 | |
487 | 523 static void |
524 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
479 | 525 { |
591 | 526 ngx_int_t rc; |
665 | 527 ngx_time_t *tp; |
591 | 528 ngx_connection_t *c; |
479 | 529 |
483 | 530 r->connection->log->action = "connecting to upstream"; |
479 | 531 |
532 r->connection->single_connection = 0; | |
533 | |
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534 if (u->state && u->state->response_sec) { |
665 | 535 tp = ngx_timeofday(); |
889
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536 u->state->response_sec = tp->sec - u->state->response_sec; |
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537 u->state->response_msec = tp->msec - u->state->response_msec; |
665 | 538 } |
539 | |
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540 u->state = ngx_array_push(r->upstream_states); |
665 | 541 if (u->state == NULL) { |
542 ngx_http_upstream_finalize_request(r, u, | |
543 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
544 return; | |
545 } | |
546 | |
547 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); | |
548 | |
549 tp = ngx_timeofday(); | |
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550 u->state->response_sec = tp->sec; |
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551 u->state->response_msec = tp->msec; |
665 | 552 |
479 | 553 rc = ngx_event_connect_peer(&u->peer); |
554 | |
555 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
556 "http upstream connect: %i", rc); | |
557 | |
558 if (rc == NGX_ERROR) { | |
559 ngx_http_upstream_finalize_request(r, u, | |
560 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
561 return; | |
562 } | |
563 | |
884 | 564 u->state->peer = u->peer.name; |
479 | 565 |
543 | 566 if (rc == NGX_BUSY) { |
567 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams"); | |
568 } | |
569 | |
570 if (rc == NGX_BUSY || rc == NGX_DECLINED) { | |
479 | 571 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
572 return; | |
573 } | |
574 | |
577 | 575 /* rc == NGX_OK || rc == NGX_AGAIN */ |
576 | |
479 | 577 c = u->peer.connection; |
578 | |
579 c->data = r; | |
591 | 580 |
509 | 581 c->write->handler = ngx_http_upstream_send_request_handler; |
582 c->read->handler = ngx_http_upstream_process_header; | |
479 | 583 |
1509 | 584 c->sendfile &= r->connection->sendfile; |
479 | 585 |
586 c->pool = r->pool; | |
587 c->read->log = c->write->log = c->log = r->connection->log; | |
588 | |
589 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */ | |
590 | |
591 u->writer.out = NULL; | |
592 u->writer.last = &u->writer.out; | |
593 u->writer.connection = c; | |
594 u->writer.limit = 0; | |
595 | |
596 if (u->request_sent) { | |
509 | 597 if (ngx_http_upstream_reinit(r, u) != NGX_OK) { |
598 ngx_http_upstream_finalize_request(r, u, | |
599 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
600 return; | |
601 } | |
479 | 602 } |
603 | |
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604 if (r->request_body |
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605 && r->request_body->buf |
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606 && r->request_body->temp_file |
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607 && r == r->main) |
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608 { |
573 | 609 /* |
610 * the r->request_body->buf can be reused for one request only, | |
611 * the subrequests should allocate their own temporay bufs | |
612 */ | |
613 | |
614 u->output.free = ngx_alloc_chain_link(r->pool); | |
615 if (u->output.free == NULL) { | |
616 ngx_http_upstream_finalize_request(r, u, | |
617 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
618 return; | |
479 | 619 } |
573 | 620 |
621 u->output.free->buf = r->request_body->buf; | |
622 u->output.free->next = NULL; | |
623 u->output.allocated = 1; | |
624 | |
625 r->request_body->buf->pos = r->request_body->buf->start; | |
626 r->request_body->buf->last = r->request_body->buf->start; | |
627 r->request_body->buf->tag = u->output.tag; | |
479 | 628 } |
629 | |
630 u->request_sent = 0; | |
631 | |
632 if (rc == NGX_AGAIN) { | |
633 ngx_add_timer(c->write, u->conf->connect_timeout); | |
634 return; | |
635 } | |
636 | |
577 | 637 #if (NGX_HTTP_SSL) |
638 | |
591 | 639 if (u->conf->ssl && c->ssl == NULL) { |
640 ngx_http_upstream_ssl_init_connection(r, u, c); | |
577 | 641 return; |
642 } | |
643 | |
644 #endif | |
645 | |
479 | 646 ngx_http_upstream_send_request(r, u); |
647 } | |
648 | |
649 | |
577 | 650 #if (NGX_HTTP_SSL) |
651 | |
652 static void | |
591 | 653 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r, |
654 ngx_http_upstream_t *u, ngx_connection_t *c) | |
655 { | |
884 | 656 ngx_int_t rc; |
591 | 657 |
658 if (ngx_ssl_create_connection(u->conf->ssl, c, | |
659 NGX_SSL_BUFFER|NGX_SSL_CLIENT) | |
660 == NGX_ERROR) | |
661 { | |
662 ngx_http_upstream_finalize_request(r, u, | |
663 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
664 return; | |
665 } | |
666 | |
667 c->sendfile = 0; | |
619 | 668 u->output.sendfile = 0; |
591 | 669 |
1346 | 670 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) { |
591 | 671 ngx_http_upstream_finalize_request(r, u, |
672 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
673 return; | |
674 } | |
675 | |
641 | 676 r->connection->log->action = "SSL handshaking to upstream"; |
677 | |
591 | 678 rc = ngx_ssl_handshake(c); |
679 | |
680 if (rc == NGX_AGAIN) { | |
681 c->ssl->handler = ngx_http_upstream_ssl_handshake; | |
682 return; | |
683 } | |
684 | |
685 ngx_http_upstream_ssl_handshake(c); | |
686 } | |
687 | |
688 | |
689 static void | |
577 | 690 ngx_http_upstream_ssl_handshake(ngx_connection_t *c) |
691 { | |
692 ngx_http_request_t *r; | |
693 ngx_http_upstream_t *u; | |
694 | |
695 r = c->data; | |
696 u = r->upstream; | |
697 | |
698 if (c->ssl->handshaked) { | |
699 | |
884 | 700 u->peer.save_session(&u->peer, u->peer.data); |
701 | |
577 | 702 c->write->handler = ngx_http_upstream_send_request_handler; |
703 c->read->handler = ngx_http_upstream_process_header; | |
704 | |
705 ngx_http_upstream_send_request(r, u); | |
706 | |
707 return; | |
708 } | |
709 | |
710 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
711 | |
712 } | |
713 | |
714 #endif | |
715 | |
716 | |
509 | 717 static ngx_int_t |
487 | 718 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u) |
479 | 719 { |
720 ngx_chain_t *cl; | |
721 | |
509 | 722 if (u->reinit_request(r) != NGX_OK) { |
723 return NGX_ERROR; | |
724 } | |
725 | |
726 ngx_memzero(&r->upstream->headers_in, | |
727 sizeof(ngx_http_upstream_headers_in_t)); | |
728 | |
729 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, | |
591 | 730 sizeof(ngx_table_elt_t)) |
731 != NGX_OK) | |
509 | 732 { |
733 return NGX_ERROR; | |
479 | 734 } |
735 | |
736 /* reinit the request chain */ | |
577 | 737 |
509 | 738 for (cl = u->request_bufs; cl; cl = cl->next) { |
479 | 739 cl->buf->pos = cl->buf->start; |
740 cl->buf->file_pos = 0; | |
741 } | |
742 | |
509 | 743 /* reinit the subrequest's ngx_output_chain() context */ |
744 | |
573 | 745 if (r->request_body && r->request_body->temp_file |
597 | 746 && r != r->main && u->output.buf) |
573 | 747 { |
748 u->output.free = ngx_alloc_chain_link(r->pool); | |
749 if (u->output.free == NULL) { | |
750 return NGX_ERROR; | |
509 | 751 } |
573 | 752 |
753 u->output.free->buf = u->output.buf; | |
754 u->output.free->next = NULL; | |
755 | |
756 u->output.buf->pos = u->output.buf->start; | |
757 u->output.buf->last = u->output.buf->start; | |
509 | 758 } |
479 | 759 |
760 u->output.buf = NULL; | |
761 u->output.in = NULL; | |
762 u->output.busy = NULL; | |
577 | 763 |
581 | 764 /* reinit u->buffer */ |
577 | 765 |
479 | 766 #if 0 |
767 if (u->cache) { | |
581 | 768 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size; |
769 u->buffer.last = u->buffer.pos; | |
479 | 770 |
771 } else { | |
581 | 772 u->buffer.pos = u->buffer.start; |
773 u->buffer.last = u->buffer.start; | |
479 | 774 } |
775 #else | |
509 | 776 |
581 | 777 u->buffer.pos = u->buffer.start; |
778 u->buffer.last = u->buffer.start; | |
509 | 779 |
479 | 780 #endif |
781 | |
509 | 782 return NGX_OK; |
479 | 783 } |
784 | |
785 | |
487 | 786 static void |
787 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
479 | 788 { |
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789 ngx_int_t rc; |
483 | 790 ngx_connection_t *c; |
577 | 791 |
479 | 792 c = u->peer.connection; |
793 | |
794 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
795 "http upstream send request"); | |
796 | |
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797 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) { |
1166 | 798 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
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799 return; |
479 | 800 } |
801 | |
483 | 802 c->log->action = "sending request to upstream"; |
479 | 803 |
509 | 804 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs); |
479 | 805 |
806 u->request_sent = 1; | |
807 | |
808 if (rc == NGX_ERROR) { | |
809 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
810 return; | |
811 } | |
812 | |
813 if (c->write->timer_set) { | |
814 ngx_del_timer(c->write); | |
815 } | |
816 | |
817 if (rc == NGX_AGAIN) { | |
818 ngx_add_timer(c->write, u->conf->send_timeout); | |
819 | |
820 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR) | |
821 { | |
822 ngx_http_upstream_finalize_request(r, u, | |
823 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
824 return; | |
825 } | |
826 | |
827 return; | |
828 } | |
829 | |
830 /* rc == NGX_OK */ | |
831 | |
832 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { | |
833 if (ngx_tcp_push(c->fd) == NGX_ERROR) { | |
834 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno, | |
835 ngx_tcp_push_n " failed"); | |
836 ngx_http_upstream_finalize_request(r, u, | |
837 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
577 | 838 return; |
479 | 839 } |
840 | |
841 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; | |
842 } | |
577 | 843 |
479 | 844 ngx_add_timer(c->read, u->conf->read_timeout); |
845 | |
846 #if 1 | |
847 if (c->read->ready) { | |
577 | 848 |
479 | 849 /* post aio operation */ |
850 | |
851 /* | |
852 * TODO comment | |
853 * although we can post aio operation just in the end | |
854 * of ngx_http_upstream_connect() CHECK IT !!! | |
855 * it's better to do here because we postpone header buffer allocation | |
856 */ | |
857 | |
858 ngx_http_upstream_process_header(c->read); | |
859 return; | |
860 } | |
861 #endif | |
862 | |
509 | 863 c->write->handler = ngx_http_upstream_dummy_handler; |
479 | 864 |
509 | 865 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) { |
479 | 866 ngx_http_upstream_finalize_request(r, u, |
867 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
868 return; | |
869 } | |
870 } | |
871 | |
872 | |
487 | 873 static void |
874 ngx_http_upstream_send_request_handler(ngx_event_t *wev) | |
479 | 875 { |
876 ngx_connection_t *c; | |
877 ngx_http_request_t *r; | |
878 ngx_http_upstream_t *u; | |
879 | |
880 c = wev->data; | |
881 r = c->data; | |
882 u = r->upstream; | |
883 | |
884 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
885 "http upstream send request handler"); | |
886 | |
887 if (wev->timedout) { | |
888 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
889 return; | |
890 } | |
891 | |
591 | 892 #if (NGX_HTTP_SSL) |
893 | |
894 if (u->conf->ssl && c->ssl == NULL) { | |
895 ngx_http_upstream_ssl_init_connection(r, u, c); | |
896 return; | |
897 } | |
898 | |
899 #endif | |
900 | |
651 | 901 if (u->header_sent) { |
902 wev->handler = ngx_http_upstream_dummy_handler; | |
903 | |
904 (void) ngx_handle_write_event(wev, 0); | |
905 | |
906 return; | |
907 } | |
908 | |
479 | 909 ngx_http_upstream_send_request(r, u); |
910 } | |
911 | |
912 | |
487 | 913 static void |
914 ngx_http_upstream_process_header(ngx_event_t *rev) | |
479 | 915 { |
515 | 916 ssize_t n; |
917 ngx_int_t rc; | |
573 | 918 ngx_str_t *uri, args; |
649 | 919 ngx_uint_t i, flags; |
515 | 920 ngx_list_part_t *part; |
921 ngx_table_elt_t *h; | |
922 ngx_connection_t *c; | |
923 ngx_http_request_t *r; | |
924 ngx_http_upstream_t *u; | |
925 ngx_http_err_page_t *err_page; | |
926 ngx_http_core_loc_conf_t *clcf; | |
927 ngx_http_upstream_header_t *hh; | |
928 ngx_http_upstream_main_conf_t *umcf; | |
479 | 929 |
930 c = rev->data; | |
931 r = c->data; | |
932 u = r->upstream; | |
933 | |
934 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, | |
483 | 935 "http upstream process header"); |
479 | 936 |
483 | 937 c->log->action = "reading response header from upstream"; |
479 | 938 |
939 if (rev->timedout) { | |
940 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
941 return; | |
942 } | |
577 | 943 |
1153
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diff
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|
944 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) { |
1166 | 945 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
1153
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diff
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|
946 return; |
c843f3df3b85
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parents:
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diff
changeset
|
947 } |
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separate ngx_http_upstream_test_connect() and
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diff
changeset
|
948 |
581 | 949 if (u->buffer.start == NULL) { |
950 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size); | |
951 if (u->buffer.start == NULL) { | |
479 | 952 ngx_http_upstream_finalize_request(r, u, |
953 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
954 return; | |
955 } | |
956 | |
581 | 957 u->buffer.pos = u->buffer.start; |
958 u->buffer.last = u->buffer.start; | |
959 u->buffer.end = u->buffer.start + u->conf->buffer_size; | |
960 u->buffer.temporary = 1; | |
961 | |
962 u->buffer.tag = u->output.tag; | |
479 | 963 |
509 | 964 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, |
581 | 965 sizeof(ngx_table_elt_t)) |
966 != NGX_OK) | |
509 | 967 { |
968 ngx_http_upstream_finalize_request(r, u, | |
969 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
970 return; | |
971 } | |
972 | |
479 | 973 #if 0 |
974 if (u->cache) { | |
581 | 975 u->buffer.pos += u->cache->ctx.header_size; |
976 u->buffer.last = u->buffer.pos; | |
479 | 977 } |
978 #endif | |
979 } | |
980 | |
1709 | 981 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last); |
479 | 982 |
983 if (n == NGX_AGAIN) { | |
984 #if 0 | |
985 ngx_add_timer(rev, u->read_timeout); | |
986 #endif | |
987 | |
988 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
989 ngx_http_upstream_finalize_request(r, u, | |
990 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
991 return; | |
992 } | |
993 | |
994 return; | |
995 } | |
996 | |
997 if (n == 0) { | |
998 ngx_log_error(NGX_LOG_ERR, rev->log, 0, | |
999 "upstream prematurely closed connection"); | |
1000 } | |
1001 | |
1002 if (n == NGX_ERROR || n == 0) { | |
1003 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
1004 return; | |
1005 } | |
1006 | |
581 | 1007 u->buffer.last += n; |
479 | 1008 |
1009 #if 0 | |
1010 u->valid_header_in = 0; | |
1011 | |
1012 u->peer.cached = 0; | |
1013 #endif | |
1014 | |
1015 rc = u->process_header(r); | |
1016 | |
1017 if (rc == NGX_AGAIN) { | |
1018 #if 0 | |
1019 ngx_add_timer(rev, u->read_timeout); | |
1020 #endif | |
1021 | |
581 | 1022 if (u->buffer.pos == u->buffer.end) { |
479 | 1023 ngx_log_error(NGX_LOG_ERR, rev->log, 0, |
1024 "upstream sent too big header"); | |
1025 | |
1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
1027 return; | |
1028 } | |
1029 | |
1030 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
1031 ngx_http_upstream_finalize_request(r, u, | |
1032 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1033 return; | |
1034 } | |
1035 | |
1036 return; | |
1037 } | |
1038 | |
1039 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) { | |
1040 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
1041 return; | |
1042 } | |
1043 | |
1044 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { | |
1045 ngx_http_upstream_finalize_request(r, u, | |
1046 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1047 return; | |
1048 } | |
1049 | |
1050 /* rc == NGX_OK */ | |
1051 | |
777
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1052 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
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|
1053 && r->subrequest_in_memory) |
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|
1054 { |
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|
1055 u->buffer.last = u->buffer.pos; |
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|
1056 } |
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|
1057 |
529 | 1058 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) { |
509 | 1059 |
1060 if (u->peer.tries > 1 | |
1061 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
1062 { | |
1063 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500); | |
1064 return; | |
1065 } | |
1066 | |
1067 #if (NGX_HTTP_CACHE) | |
1068 | |
1069 if (u->peer.tries == 0 | |
1070 && u->stale | |
1071 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
1072 { | |
1073 ngx_http_upstream_finalize_request(r, u, | |
529 | 1074 ngx_http_send_cached_response(r)); |
509 | 1075 return; |
1076 } | |
1077 | |
1078 #endif | |
1079 } | |
1080 | |
597 | 1081 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) { |
1082 | |
1083 if (u->peer.tries > 1 | |
1084 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404) | |
1085 { | |
1086 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404); | |
1087 return; | |
1088 } | |
1089 | |
675 | 1090 if (u->conf->intercept_404) { |
1091 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND); | |
597 | 1092 return; |
1093 } | |
509 | 1094 } |
1095 | |
1096 | |
529 | 1097 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
675 | 1098 && u->conf->intercept_errors) |
487 | 1099 { |
1100 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
1101 | |
1102 if (clcf->error_pages) { | |
1103 | |
1104 err_page = clcf->error_pages->elts; | |
1105 for (i = 0; i < clcf->error_pages->nelts; i++) { | |
529 | 1106 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) { |
1107 | |
1108 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) { | |
1109 | |
1110 r->headers_out.www_authenticate = | |
1111 ngx_list_push(&r->headers_out.headers); | |
1112 | |
1113 if (r->headers_out.www_authenticate == NULL) { | |
1114 ngx_http_upstream_finalize_request(r, u, | |
1115 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1116 return; | |
1117 } | |
1118 | |
577 | 1119 *r->headers_out.www_authenticate = |
529 | 1120 *u->headers_in.www_authenticate; |
1121 } | |
1122 | |
487 | 1123 ngx_http_upstream_finalize_request(r, u, |
529 | 1124 u->headers_in.status_n); |
487 | 1125 return; |
1126 } | |
1127 } | |
1128 } | |
1129 } | |
1130 | |
681 | 1131 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); |
1132 | |
515 | 1133 if (r->upstream->headers_in.x_accel_redirect) { |
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|
1134 |
515 | 1135 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED); |
1136 | |
1137 part = &r->upstream->headers_in.headers.part; | |
1138 h = part->elts; | |
1139 | |
1140 for (i = 0; /* void */; i++) { | |
1141 | |
1142 if (i >= part->nelts) { | |
1143 if (part->next == NULL) { | |
1144 break; | |
1145 } | |
577 | 1146 |
515 | 1147 part = part->next; |
1148 h = part->elts; | |
1149 i = 0; | |
1150 } | |
1151 | |
649 | 1152 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, |
1153 h[i].lowcase_key, h[i].key.len); | |
1154 | |
1155 if (hh && hh->redirect) { | |
1156 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
787
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diff
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|
1157 ngx_http_finalize_request(r, |
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parents:
756
diff
changeset
|
1158 NGX_HTTP_INTERNAL_SERVER_ERROR); |
515 | 1159 return; |
1160 } | |
1161 } | |
1162 } | |
1163 | |
573 | 1164 uri = &r->upstream->headers_in.x_accel_redirect->value; |
1165 args.len = 0; | |
1166 args.data = NULL; | |
1167 flags = 0; | |
1168 | |
1169 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) { | |
757
a138c4e6031f
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diff
changeset
|
1170 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); |
573 | 1171 return; |
1172 } | |
1173 | |
1174 if (flags & NGX_HTTP_ZERO_IN_URI) { | |
1175 r->zero_in_uri = 1; | |
1176 } | |
1177 | |
653 | 1178 if (r->method != NGX_HTTP_HEAD) { |
1179 r->method = NGX_HTTP_GET; | |
1180 } | |
1181 | |
573 | 1182 ngx_http_internal_redirect(r, uri, &args); |
515 | 1183 return; |
1184 } | |
1185 | |
509 | 1186 part = &r->upstream->headers_in.headers.part; |
1187 h = part->elts; | |
1188 | |
1189 for (i = 0; /* void */; i++) { | |
479 | 1190 |
509 | 1191 if (i >= part->nelts) { |
1192 if (part->next == NULL) { | |
1193 break; | |
1194 } | |
577 | 1195 |
509 | 1196 part = part->next; |
1197 h = part->elts; | |
1198 i = 0; | |
1199 } | |
1200 | |
649 | 1201 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash, |
1202 h[i].lowcase_key, h[i].key.len)) | |
509 | 1203 { |
649 | 1204 continue; |
1205 } | |
1206 | |
1207 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, | |
1208 h[i].lowcase_key, h[i].key.len); | |
1209 | |
1210 if (hh) { | |
1211 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
509 | 1212 ngx_http_upstream_finalize_request(r, u, |
1213 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1214 return; | |
1215 } | |
1216 | |
1217 continue; | |
1218 } | |
1219 | |
1220 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) { | |
1221 ngx_http_upstream_finalize_request(r, u, | |
1222 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
1223 return; | |
1224 } | |
1225 } | |
1226 | |
649 | 1227 if (r->headers_out.server && r->headers_out.server->value.data == NULL) { |
1228 r->headers_out.server->hash = 0; | |
1229 } | |
1230 | |
1231 if (r->headers_out.date && r->headers_out.date->value.data == NULL) { | |
1232 r->headers_out.date->hash = 0; | |
1233 } | |
1234 | |
529 | 1235 r->headers_out.status = u->headers_in.status_n; |
1236 r->headers_out.status_line = u->headers_in.status_line; | |
1237 | |
581 | 1238 if (r->headers_out.content_length_n != -1) { |
1239 u->length = (size_t) r->headers_out.content_length_n; | |
1240 | |
1241 } else { | |
1242 u->length = NGX_MAX_SIZE_T_VALUE; | |
1243 } | |
1244 | |
777
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1245 if (!r->subrequest_in_memory) { |
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|
1246 ngx_http_upstream_send_response(r, u); |
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diff
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|
1247 return; |
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diff
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|
1248 } |
4ab852b691f5
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|
1249 |
4ab852b691f5
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diff
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|
1250 /* subrequest content in memory */ |
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1251 |
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|
1252 if (u->input_filter == NULL) { |
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diff
changeset
|
1253 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; |
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diff
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|
1254 u->input_filter = ngx_http_upstream_non_buffered_filter; |
4ab852b691f5
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diff
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|
1255 u->input_filter_ctx = r; |
4ab852b691f5
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diff
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|
1256 } |
4ab852b691f5
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|
1257 |
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diff
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|
1258 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { |
4ab852b691f5
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diff
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|
1259 ngx_http_upstream_finalize_request(r, u, |
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diff
changeset
|
1260 NGX_HTTP_INTERNAL_SERVER_ERROR); |
4ab852b691f5
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diff
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|
1261 return; |
4ab852b691f5
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parents:
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diff
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|
1262 } |
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parents:
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diff
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|
1263 |
4ab852b691f5
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diff
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|
1264 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) { |
4ab852b691f5
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parents:
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diff
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|
1265 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) { |
4ab852b691f5
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diff
changeset
|
1266 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
4ab852b691f5
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parents:
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diff
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|
1267 return; |
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parents:
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diff
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|
1268 } |
4ab852b691f5
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|
1269 |
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|
1270 ngx_http_upstream_finalize_request(r, u, 0); |
4ab852b691f5
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diff
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|
1271 return; |
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parents:
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diff
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|
1272 } |
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|
1273 |
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|
1274 rev->handler = ngx_http_upstream_process_body_in_memory; |
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|
1275 |
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changeset
|
1276 ngx_http_upstream_process_body_in_memory(rev); |
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|
1277 } |
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|
1278 |
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|
1279 |
1153
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changeset
|
1280 static ngx_int_t |
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diff
changeset
|
1281 ngx_http_upstream_test_connect(ngx_connection_t *c) |
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|
1282 { |
c843f3df3b85
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diff
changeset
|
1283 int err; |
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diff
changeset
|
1284 socklen_t len; |
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diff
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|
1285 |
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diff
changeset
|
1286 #if (NGX_HAVE_KQUEUE) |
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diff
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|
1287 |
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diff
changeset
|
1288 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
1166 | 1289 if (c->write->pending_eof) { |
1528 | 1290 c->log->action = "connecting to upstream"; |
1166 | 1291 (void) ngx_connection_error(c, c->write->kq_errno, |
1292 "kevent() reported that connect() failed"); | |
1293 return NGX_ERROR; | |
1294 } | |
1153
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1295 |
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1296 } else |
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1297 #endif |
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1298 { |
1166 | 1299 err = 0; |
1300 len = sizeof(int); | |
1301 | |
1302 /* | |
1303 * BSDs and Linux return 0 and set a pending error in err | |
1304 * Solaris returns -1 and sets errno | |
1305 */ | |
1306 | |
1307 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len) | |
1308 == -1) | |
1309 { | |
1310 err = ngx_errno; | |
1311 } | |
1312 | |
1313 if (err) { | |
1528 | 1314 c->log->action = "connecting to upstream"; |
1166 | 1315 (void) ngx_connection_error(c, err, "connect() failed"); |
1316 return NGX_ERROR; | |
1317 } | |
1153
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1318 } |
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1319 |
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|
1320 return NGX_OK; |
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1321 } |
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1322 |
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1323 |
777
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1324 static void |
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|
1325 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev) |
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1326 { |
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|
1327 size_t size; |
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1328 ssize_t n; |
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1329 ngx_buf_t *b; |
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1330 ngx_connection_t *c; |
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|
1331 ngx_http_request_t *r; |
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|
1332 ngx_http_upstream_t *u; |
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|
1333 |
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|
1334 c = rev->data; |
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|
1335 r = c->data; |
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1336 u = r->upstream; |
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1337 |
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|
1338 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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1339 "http upstream process body on memory"); |
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1340 |
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1341 if (rev->timedout) { |
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1342 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
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1343 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT); |
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|
1344 return; |
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|
1345 } |
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1346 |
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1347 b = &u->buffer; |
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1348 |
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1349 for ( ;; ) { |
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1350 |
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1351 size = b->end - b->last; |
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1352 |
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1353 if (size == 0) { |
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1354 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
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1355 "upstream buffer is too small to read repsonse"); |
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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 n = c->recv(c, b->last, size); |
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1361 |
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1362 if (n == NGX_AGAIN) { |
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1363 break; |
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1364 } |
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1365 |
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1366 if (n == 0 || n == NGX_ERROR) { |
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1367 ngx_http_upstream_finalize_request(r, u, n); |
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|
1368 return; |
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|
1369 } |
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1370 |
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1371 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { |
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1372 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1373 return; |
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|
1374 } |
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1375 |
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1376 if (!rev->ready) { |
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|
1377 break; |
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|
1378 } |
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|
1379 } |
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1380 |
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1381 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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1382 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
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|
1383 return; |
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|
1384 } |
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1385 |
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1386 if (rev->active) { |
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|
1387 ngx_add_timer(rev, u->conf->read_timeout); |
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1388 |
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1389 } else if (rev->timer_set) { |
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1390 ngx_del_timer(rev); |
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1391 } |
681 | 1392 } |
1393 | |
1394 | |
1395 static void | |
1396 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
1397 { | |
1398 int tcp_nodelay; | |
1399 ssize_t size; | |
1400 ngx_int_t rc; | |
1401 ngx_event_pipe_t *p; | |
1402 ngx_connection_t *c; | |
1403 ngx_pool_cleanup_t *cl; | |
1404 ngx_pool_cleanup_file_t *clf; | |
1405 ngx_http_core_loc_conf_t *clcf; | |
1406 | |
509 | 1407 rc = ngx_http_send_header(r); |
479 | 1408 |
1031
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1409 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) { |
485 | 1410 ngx_http_upstream_finalize_request(r, u, rc); |
479 | 1411 return; |
1412 } | |
1413 | |
1414 u->header_sent = 1; | |
1415 | |
573 | 1416 if (r->request_body && r->request_body->temp_file) { |
563 | 1417 for (cl = r->pool->cleanup; cl; cl = cl->next) { |
1418 if (cl->handler == ngx_pool_cleanup_file) { | |
1419 clf = cl->data; | |
1420 | |
1421 if (clf->fd == r->request_body->temp_file->file.fd) { | |
1422 cl->handler(clf); | |
1423 cl->handler = NULL; | |
659 | 1424 r->request_body->temp_file->file.fd = NGX_INVALID_FILE; |
563 | 1425 break; |
1426 } | |
1427 } | |
1428 } | |
1429 } | |
1430 | |
583 | 1431 c = r->connection; |
1432 | |
581 | 1433 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
1434 | |
649 | 1435 if (!u->buffering) { |
581 | 1436 |
1437 if (u->input_filter == NULL) { | |
1438 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; | |
1439 u->input_filter = ngx_http_upstream_non_buffered_filter; | |
1440 u->input_filter_ctx = r; | |
1441 } | |
1442 | |
1443 u->peer.connection->read->handler = | |
1444 ngx_http_upstream_process_non_buffered_body; | |
1445 r->write_event_handler = | |
1446 ngx_http_upstream_process_non_buffered_downstream; | |
1447 | |
1448 r->limit_rate = 0; | |
1449 | |
1450 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { | |
1451 ngx_http_upstream_finalize_request(r, u, 0); | |
1452 return; | |
1453 } | |
1454 | |
583 | 1455 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) { |
1456 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); | |
1457 | |
1458 tcp_nodelay = 1; | |
1459 | |
1460 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, | |
1461 (const void *) &tcp_nodelay, sizeof(int)) == -1) | |
1462 { | |
1463 ngx_connection_error(c, ngx_socket_errno, | |
1464 "setsockopt(TCP_NODELAY) failed"); | |
1465 ngx_http_upstream_finalize_request(r, u, 0); | |
1466 return; | |
1467 } | |
1468 | |
1469 c->tcp_nodelay = NGX_TCP_NODELAY_SET; | |
1470 } | |
1471 | |
581 | 1472 size = u->buffer.last - u->buffer.pos; |
1473 | |
1474 if (size) { | |
1475 u->buffer.last = u->buffer.pos; | |
1476 | |
1477 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) { | |
1478 ngx_http_upstream_finalize_request(r, u, 0); | |
1479 return; | |
1480 } | |
1481 | |
583 | 1482 ngx_http_upstream_process_non_buffered_body(c->write); |
581 | 1483 |
1484 } else { | |
1485 u->buffer.pos = u->buffer.start; | |
1486 u->buffer.last = u->buffer.start; | |
1487 | |
1488 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) { | |
1489 ngx_http_upstream_finalize_request(r, u, 0); | |
1490 return; | |
1491 } | |
1527 | 1492 |
1493 if (u->peer.connection->read->ready) { | |
1494 ngx_http_upstream_process_non_buffered_body( | |
1495 u->peer.connection->read); | |
1496 } | |
581 | 1497 } |
1498 | |
1499 return; | |
1500 } | |
1501 | |
479 | 1502 /* TODO: preallocate event_pipe bufs, look "Content-Length" */ |
1503 | |
1504 #if 0 | |
1505 | |
1506 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) { | |
1507 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) { | |
583 | 1508 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
479 | 1509 ngx_close_file_n " \"%s\" failed", |
1510 u->cache->ctx.file.name.data); | |
1511 } | |
1512 } | |
1513 | |
1714 | 1514 if (u->cacheable) { |
581 | 1515 header = (ngx_http_cache_header_t *) u->buffer->start; |
479 | 1516 |
1517 header->expires = u->cache->ctx.expires; | |
1518 header->last_modified = u->cache->ctx.last_modified; | |
1519 header->date = u->cache->ctx.date; | |
1520 header->length = r->headers_out.content_length_n; | |
1521 u->cache->ctx.length = r->headers_out.content_length_n; | |
1522 | |
1523 header->key_len = u->cache->ctx.key0.len; | |
1524 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len); | |
1525 header->key[header->key_len] = LF; | |
1526 } | |
1527 | |
1528 #endif | |
1529 | |
581 | 1530 p = u->pipe; |
479 | 1531 |
1532 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter; | |
1533 p->output_ctx = r; | |
1534 p->tag = u->output.tag; | |
577 | 1535 p->bufs = u->conf->bufs; |
479 | 1536 p->busy_size = u->conf->busy_buffers_size; |
1537 p->upstream = u->peer.connection; | |
583 | 1538 p->downstream = c; |
479 | 1539 p->pool = r->pool; |
583 | 1540 p->log = c->log; |
577 | 1541 |
1714 | 1542 p->cacheable = u->cacheable || u->store; |
479 | 1543 |
501 | 1544 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
1545 if (p->temp_file == NULL) { | |
479 | 1546 ngx_http_upstream_finalize_request(r, u, 0); |
1547 return; | |
1548 } | |
1549 | |
1550 p->temp_file->file.fd = NGX_INVALID_FILE; | |
583 | 1551 p->temp_file->file.log = c->log; |
479 | 1552 p->temp_file->path = u->conf->temp_path; |
1553 p->temp_file->pool = r->pool; | |
577 | 1554 |
1714 | 1555 if (u->cacheable || u->store) { |
479 | 1556 p->temp_file->persistent = 1; |
1381 | 1557 |
479 | 1558 } else { |
667 | 1559 p->temp_file->log_level = NGX_LOG_WARN; |
479 | 1560 p->temp_file->warn = "an upstream response is buffered " |
1561 "to a temporary file"; | |
1562 } | |
1563 | |
1564 p->max_temp_file_size = u->conf->max_temp_file_size; | |
1565 p->temp_file_write_size = u->conf->temp_file_write_size; | |
1566 | |
501 | 1567 p->preread_bufs = ngx_alloc_chain_link(r->pool); |
1568 if (p->preread_bufs == NULL) { | |
479 | 1569 ngx_http_upstream_finalize_request(r, u, 0); |
1570 return; | |
1571 } | |
1381 | 1572 |
581 | 1573 p->preread_bufs->buf = &u->buffer; |
479 | 1574 p->preread_bufs->next = NULL; |
581 | 1575 u->buffer.recycled = 1; |
1576 | |
1577 p->preread_size = u->buffer.last - u->buffer.pos; | |
479 | 1578 |
1714 | 1579 if (u->cacheable) { |
1381 | 1580 |
479 | 1581 p->buf_to_file = ngx_calloc_buf(r->pool); |
1582 if (p->buf_to_file == NULL) { | |
1583 ngx_http_upstream_finalize_request(r, u, 0); | |
1584 return; | |
1585 } | |
1381 | 1586 |
581 | 1587 p->buf_to_file->pos = u->buffer.start; |
1588 p->buf_to_file->last = u->buffer.pos; | |
479 | 1589 p->buf_to_file->temporary = 1; |
1590 } | |
1591 | |
1592 if (ngx_event_flags & NGX_USE_AIO_EVENT) { | |
1593 /* the posted aio operation may currupt a shadow buffer */ | |
1594 p->single_buf = 1; | |
1595 } | |
1596 | |
1597 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */ | |
1598 p->free_bufs = 1; | |
1599 | |
1600 /* | |
581 | 1601 * event_pipe would do u->buffer.last += p->preread_size |
479 | 1602 * as though these bytes were read |
1603 */ | |
581 | 1604 u->buffer.last = u->buffer.pos; |
479 | 1605 |
1606 if (u->conf->cyclic_temp_file) { | |
1607 | |
1608 /* | |
1609 * we need to disable the use of sendfile() if we use cyclic temp file | |
1610 * because the writing a new data may interfere with sendfile() | |
1611 * that uses the same kernel file pages (at least on FreeBSD) | |
1612 */ | |
1613 | |
1614 p->cyclic_temp_file = 1; | |
583 | 1615 c->sendfile = 0; |
479 | 1616 |
1617 } else { | |
1618 p->cyclic_temp_file = 0; | |
1619 } | |
1620 | |
1621 p->read_timeout = u->conf->read_timeout; | |
1622 p->send_timeout = clcf->send_timeout; | |
1623 p->send_lowat = clcf->send_lowat; | |
1624 | |
509 | 1625 u->peer.connection->read->handler = ngx_http_upstream_process_body; |
1626 r->write_event_handler = ngx_http_upstream_process_downstream; | |
479 | 1627 |
1628 ngx_http_upstream_process_body(u->peer.connection->read); | |
1629 } | |
1630 | |
1631 | |
487 | 1632 static void |
581 | 1633 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r) |
1634 { | |
1635 ngx_http_upstream_process_non_buffered_body(r->connection->write); | |
1636 } | |
1637 | |
1638 | |
1639 static void | |
1640 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev) | |
1641 { | |
1642 size_t size; | |
1643 ssize_t n; | |
1644 ngx_buf_t *b; | |
583 | 1645 ngx_int_t rc; |
581 | 1646 ngx_uint_t do_write; |
884 | 1647 ngx_connection_t *c, *downstream, *upstream; |
581 | 1648 ngx_http_request_t *r; |
1649 ngx_http_upstream_t *u; | |
1650 ngx_http_core_loc_conf_t *clcf; | |
1651 | |
1652 c = ev->data; | |
756
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1653 r = c->data; |
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1654 u = r->upstream; |
581 | 1655 |
1656 if (ev->write) { | |
1657 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1658 "http upstream process non buffered downstream"); | |
1659 c->log->action = "sending to client"; | |
1660 | |
1661 } else { | |
1662 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1663 "http upstream process non buffered upstream"); | |
1664 c->log->action = "reading upstream"; | |
1665 } | |
1666 | |
1667 if (ev->timedout) { | |
1668 if (ev->write) { | |
1669 c->timedout = 1; | |
611 | 1670 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
1671 | |
581 | 1672 } else { |
611 | 1673 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
581 | 1674 } |
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|
1675 |
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1676 ngx_http_upstream_finalize_request(r, u, 0); |
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|
1677 return; |
581 | 1678 } |
1679 | |
884 | 1680 downstream = r->connection; |
1681 upstream = u->peer.connection; | |
581 | 1682 |
1683 b = &u->buffer; | |
1684 | |
1685 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
1686 | |
657 | 1687 do_write = ev->write || u->length == 0; |
581 | 1688 |
1689 for ( ;; ) { | |
1690 | |
1691 if (do_write) { | |
1692 | |
1693 if (u->out_bufs || u->busy_bufs) { | |
583 | 1694 rc = ngx_http_output_filter(r, u->out_bufs); |
1695 | |
884 | 1696 if (downstream->destroyed) { |
583 | 1697 return; |
1698 } | |
1699 | |
1700 if (rc == NGX_ERROR) { | |
581 | 1701 ngx_http_upstream_finalize_request(r, u, 0); |
1702 return; | |
1703 } | |
1704 | |
1705 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs, | |
1706 &u->out_bufs, u->output.tag); | |
1707 } | |
1708 | |
1709 if (u->busy_bufs == NULL) { | |
1710 | |
1711 if (u->length == 0 | |
884 | 1712 || upstream->read->eof |
1713 || upstream->read->error) | |
581 | 1714 { |
1715 ngx_http_upstream_finalize_request(r, u, 0); | |
1716 return; | |
1717 } | |
1718 | |
1719 b->pos = b->start; | |
1720 b->last = b->start; | |
1721 } | |
1722 } | |
1723 | |
1724 size = b->end - b->last; | |
1725 | |
1726 if (size > u->length) { | |
1727 size = u->length; | |
1728 } | |
1729 | |
884 | 1730 if (size && upstream->read->ready) { |
1731 | |
1732 n = upstream->recv(upstream, b->last, size); | |
581 | 1733 |
1734 if (n == NGX_AGAIN) { | |
1735 break; | |
1736 } | |
1737 | |
1738 if (n > 0) { | |
1739 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { | |
1740 ngx_http_upstream_finalize_request(r, u, 0); | |
1741 return; | |
1742 } | |
1743 } | |
1744 | |
1745 do_write = 1; | |
1746 | |
1747 continue; | |
1748 } | |
1749 | |
1750 break; | |
1751 } | |
1752 | |
884 | 1753 if (downstream->data == r) { |
1754 if (ngx_handle_write_event(downstream->write, clcf->send_lowat) | |
583 | 1755 == NGX_ERROR) |
1756 { | |
1757 ngx_http_upstream_finalize_request(r, u, 0); | |
1758 return; | |
1759 } | |
581 | 1760 } |
1761 | |
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diff
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|
1762 if (downstream->write->active && !downstream->write->ready) { |
884 | 1763 ngx_add_timer(downstream->write, clcf->send_timeout); |
1764 | |
1765 } else if (downstream->write->timer_set) { | |
1766 ngx_del_timer(downstream->write); | |
581 | 1767 } |
1768 | |
884 | 1769 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) { |
581 | 1770 ngx_http_upstream_finalize_request(r, u, 0); |
1771 return; | |
1772 } | |
1773 | |
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diff
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|
1774 if (upstream->read->active && !upstream->read->ready) { |
884 | 1775 ngx_add_timer(upstream->read, u->conf->read_timeout); |
1776 | |
1777 } else if (upstream->read->timer_set) { | |
1778 ngx_del_timer(upstream->read); | |
581 | 1779 } |
1780 } | |
1781 | |
1782 | |
1783 static ngx_int_t | |
1784 ngx_http_upstream_non_buffered_filter_init(void *data) | |
1785 { | |
1786 return NGX_OK; | |
1787 } | |
1788 | |
1789 | |
1790 static ngx_int_t | |
1791 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes) | |
1792 { | |
1793 ngx_http_request_t *r = data; | |
1794 | |
1795 ngx_buf_t *b; | |
1796 ngx_chain_t *cl, **ll; | |
1797 ngx_http_upstream_t *u; | |
1798 | |
1799 u = r->upstream; | |
1800 | |
1801 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1802 ll = &cl->next; | |
1803 } | |
1804 | |
1805 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
1806 if (cl == NULL) { | |
1807 return NGX_ERROR; | |
1808 } | |
1809 | |
1810 *ll = cl; | |
1811 | |
1812 cl->buf->flush = 1; | |
1813 cl->buf->memory = 1; | |
1814 | |
1815 b = &u->buffer; | |
1816 | |
1817 cl->buf->pos = b->last; | |
1818 b->last += bytes; | |
1819 cl->buf->last = b->last; | |
1820 | |
1821 if (u->length == NGX_MAX_SIZE_T_VALUE) { | |
1822 return NGX_OK; | |
1823 } | |
1824 | |
1825 u->length -= bytes; | |
1826 | |
1827 return NGX_OK; | |
1828 } | |
1829 | |
1830 | |
1831 static void | |
509 | 1832 ngx_http_upstream_process_downstream(ngx_http_request_t *r) |
1833 { | |
1834 ngx_http_upstream_process_body(r->connection->write); | |
1835 } | |
1836 | |
1837 | |
1838 static void | |
487 | 1839 ngx_http_upstream_process_body(ngx_event_t *ev) |
479 | 1840 { |
509 | 1841 ngx_event_pipe_t *p; |
583 | 1842 ngx_connection_t *c, *downstream; |
1098 | 1843 ngx_http_log_ctx_t *ctx; |
479 | 1844 ngx_http_request_t *r; |
1845 ngx_http_upstream_t *u; | |
1846 | |
1847 c = ev->data; | |
1848 r = c->data; | |
1849 u = r->upstream; | |
583 | 1850 downstream = r->connection; |
479 | 1851 |
1852 if (ev->write) { | |
483 | 1853 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1854 "http upstream process downstream"); | |
1855 c->log->action = "sending to client"; | |
577 | 1856 |
479 | 1857 } else { |
483 | 1858 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1859 "http upstream process upstream"); | |
1860 c->log->action = "reading upstream"; | |
1098 | 1861 |
1862 ctx = c->log->data; | |
1863 ctx->current_request = r; | |
479 | 1864 } |
577 | 1865 |
581 | 1866 p = u->pipe; |
479 | 1867 |
1868 if (ev->timedout) { | |
1869 if (ev->write) { | |
527 | 1870 if (ev->delayed) { |
1871 | |
1872 ev->timedout = 0; | |
1873 ev->delayed = 0; | |
1874 | |
1875 if (!ev->ready) { | |
1876 ngx_add_timer(ev, p->send_timeout); | |
1877 | |
1878 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) | |
1879 { | |
1880 ngx_http_upstream_finalize_request(r, u, 0); | |
1881 return; | |
1882 } | |
1883 | |
1884 return; | |
1885 } | |
1886 | |
1887 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { | |
583 | 1888 |
1889 if (downstream->destroyed) { | |
1890 return; | |
1891 } | |
1892 | |
527 | 1893 ngx_http_upstream_finalize_request(r, u, 0); |
1894 return; | |
1895 } | |
1896 | |
1897 } else { | |
1898 p->downstream_error = 1; | |
577 | 1899 c->timedout = 1; |
611 | 1900 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
527 | 1901 } |
479 | 1902 |
1903 } else { | |
577 | 1904 p->upstream_error = 1; |
611 | 1905 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
479 | 1906 } |
1907 | |
1908 } else { | |
527 | 1909 if (ev->write && ev->delayed) { |
1910 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
1911 "http downstream delayed"); | |
1912 | |
1913 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) { | |
1914 return; | |
1915 } | |
1916 | |
1917 return; | |
1918 } | |
1919 | |
479 | 1920 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { |
583 | 1921 |
1922 if (downstream->destroyed) { | |
1923 return; | |
1924 } | |
1925 | |
479 | 1926 ngx_http_upstream_finalize_request(r, u, 0); |
1927 return; | |
1928 } | |
1929 } | |
577 | 1930 |
479 | 1931 if (u->peer.connection) { |
1932 | |
1381 | 1933 if (u->store) { |
1934 | |
1935 if (p->upstream_eof && u->headers_in.status_n == NGX_HTTP_OK) { | |
1936 | |
1937 ngx_http_upstream_store(r, u); | |
1938 | |
1939 } else if ((p->upstream_error | |
1940 || (p->upstream_eof | |
1941 && u->headers_in.status_n != NGX_HTTP_OK)) | |
1942 && u->pipe->temp_file->file.fd != NGX_INVALID_FILE) | |
1943 { | |
1944 if (ngx_delete_file(u->pipe->temp_file->file.name.data) | |
1945 == NGX_FILE_ERROR) | |
1946 { | |
1947 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, | |
1948 ngx_delete_file_n " \"%s\" failed", | |
1949 u->pipe->temp_file->file.name.data); | |
1950 } | |
1951 } | |
1952 } | |
1953 | |
479 | 1954 #if (NGX_HTTP_FILE_CACHE) |
1955 | |
1714 | 1956 if (p->upstream_done && u->cacheable) { |
479 | 1957 if (ngx_http_cache_update(r) == NGX_ERROR) { |
1958 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1959 ngx_http_upstream_finalize_request(r, u, 0); | |
1960 return; | |
1961 } | |
1962 | |
1714 | 1963 } else if (p->upstream_eof && u->cacheable) { |
479 | 1964 |
1965 /* TODO: check length & update cache */ | |
1966 | |
1967 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
1968 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1969 ngx_http_upstream_finalize_request(r, u, 0); | |
1970 return; | |
1971 } | |
1972 } | |
1973 | |
1974 #endif | |
1975 | |
1976 if (p->upstream_done || p->upstream_eof || p->upstream_error) { | |
483 | 1977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1978 "http upstream exit: %p", p->out); | |
479 | 1979 #if 0 |
1980 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
1981 #endif | |
1982 ngx_http_upstream_finalize_request(r, u, 0); | |
1983 return; | |
1984 } | |
1985 } | |
1986 | |
1987 if (p->downstream_error) { | |
483 | 1988 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1989 "http upstream downstream error"); | |
479 | 1990 |
1714 | 1991 if (!u->cacheable && u->peer.connection) { |
479 | 1992 ngx_http_upstream_finalize_request(r, u, 0); |
1993 } | |
1994 } | |
1995 } | |
1996 | |
1997 | |
487 | 1998 static void |
1381 | 1999 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u) |
2000 { | |
2001 char *failed; | |
2002 u_char *name; | |
2003 size_t root; | |
2004 time_t lm; | |
2005 ngx_err_t err; | |
2006 ngx_str_t *temp, path, *last_modified; | |
2007 ngx_temp_file_t *tf; | |
2008 | |
2009 if (u->pipe->temp_file->file.fd == NGX_INVALID_FILE) { | |
2010 | |
2011 /* create file for empty 200 response */ | |
2012 | |
2013 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); | |
2014 if (tf == NULL) { | |
2015 return; | |
2016 } | |
2017 | |
2018 tf->file.fd = NGX_INVALID_FILE; | |
2019 tf->file.log = r->connection->log; | |
2020 tf->path = u->conf->temp_path; | |
2021 tf->pool = r->pool; | |
2022 tf->persistent = 1; | |
2023 | |
2024 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool, | |
2025 tf->persistent, tf->clean, tf->access) | |
2026 != NGX_OK) | |
2027 { | |
2028 return; | |
2029 } | |
2030 | |
2031 u->pipe->temp_file = tf; | |
2032 } | |
2033 | |
2034 temp = &u->pipe->temp_file->file.name; | |
2035 | |
2036 #if !(NGX_WIN32) | |
2037 | |
2038 if (ngx_change_file_access(temp->data, u->conf->store_access) | |
2039 == NGX_FILE_ERROR) | |
2040 { | |
2041 err = ngx_errno; | |
2042 failed = ngx_change_file_access_n; | |
2043 name = temp->data; | |
2044 | |
2045 goto failed; | |
2046 } | |
2047 | |
2048 #endif | |
2049 | |
2050 if (r->upstream->headers_in.last_modified) { | |
2051 | |
2052 last_modified = &r->upstream->headers_in.last_modified->value; | |
2053 | |
2054 lm = ngx_http_parse_time(last_modified->data, last_modified->len); | |
2055 | |
2056 if (lm != NGX_ERROR) { | |
2057 if (ngx_set_file_time(temp->data, u->pipe->temp_file->file.fd, lm) | |
2058 != NGX_OK) | |
2059 { | |
2060 err = ngx_errno; | |
2061 failed = ngx_set_file_time_n; | |
2062 name = temp->data; | |
2063 | |
2064 goto failed; | |
2065 } | |
2066 } | |
2067 } | |
2068 | |
2069 if (u->conf->store_lengths == NULL) { | |
2070 | |
2071 ngx_http_map_uri_to_path(r, &path, &root, 0); | |
2072 | |
2073 } else { | |
2074 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0, | |
2075 u->conf->store_values->elts) | |
2076 == NULL) | |
2077 { | |
2078 return; | |
2079 } | |
2080 } | |
2081 | |
2082 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2083 "upstream stores \"%s\" to \"%s\"", temp->data, path.data); | |
2084 | |
2085 failed = ngx_rename_file_n; | |
2086 name = path.data; | |
2087 | |
2088 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) { | |
2089 return; | |
2090 } | |
2091 | |
2092 err = ngx_errno; | |
2093 | |
2094 if (err == NGX_ENOENT) { | |
2095 | |
2096 err = ngx_create_full_path(path.data, | |
2097 ngx_dir_access(u->conf->store_access)); | |
2098 if (err == 0) { | |
2099 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) { | |
2100 return; | |
2101 } | |
2102 | |
2103 err = ngx_errno; | |
2104 } | |
2105 } | |
2106 | |
2107 #if (NGX_WIN32) | |
2108 | |
2109 if (err == NGX_EEXIST) { | |
2110 if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) { | |
2111 | |
2112 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) { | |
2113 return; | |
2114 } | |
2115 } | |
2116 | |
2117 err = ngx_errno; | |
2118 } | |
2119 | |
2120 #endif | |
2121 | |
2122 failed: | |
2123 | |
2124 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) { | |
2125 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, | |
2126 ngx_delete_file_n " \"%s\" failed", | |
2127 temp->data); | |
2128 } | |
2129 | |
2130 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err, | |
2131 "%s \"%s\" failed", failed, name); | |
2132 } | |
2133 | |
2134 | |
2135 static void | |
487 | 2136 ngx_http_upstream_dummy_handler(ngx_event_t *wev) |
479 | 2137 { |
2138 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
2139 "http upstream dummy handler"); | |
2140 } | |
2141 | |
2142 | |
487 | 2143 static void |
2144 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u, | |
2145 ngx_uint_t ft_type) | |
479 | 2146 { |
884 | 2147 ngx_uint_t status, state; |
479 | 2148 |
2149 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
884 | 2150 "http next upstream, %xi", ft_type); |
479 | 2151 |
2152 #if 0 | |
2153 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
2154 #endif | |
2155 | |
525 | 2156 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) { |
884 | 2157 state = NGX_PEER_NEXT; |
525 | 2158 } else { |
884 | 2159 state = NGX_PEER_FAILED; |
479 | 2160 } |
525 | 2161 |
884 | 2162 u->peer.free(&u->peer, u->peer.data, state); |
525 | 2163 |
479 | 2164 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) { |
2165 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT, | |
2166 "upstream timed out"); | |
2167 } | |
577 | 2168 |
479 | 2169 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) { |
2170 status = 0; | |
2171 | |
2172 } else { | |
2173 switch(ft_type) { | |
2174 | |
2175 case NGX_HTTP_UPSTREAM_FT_TIMEOUT: | |
2176 status = NGX_HTTP_GATEWAY_TIME_OUT; | |
2177 break; | |
2178 | |
2179 case NGX_HTTP_UPSTREAM_FT_HTTP_500: | |
2180 status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
2181 break; | |
2182 | |
2183 case NGX_HTTP_UPSTREAM_FT_HTTP_404: | |
2184 status = NGX_HTTP_NOT_FOUND; | |
2185 break; | |
2186 | |
2187 /* | |
2188 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING | |
2189 * never reach here | |
2190 */ | |
2191 | |
2192 default: | |
2193 status = NGX_HTTP_BAD_GATEWAY; | |
2194 } | |
2195 } | |
2196 | |
583 | 2197 if (r->connection->error) { |
479 | 2198 ngx_http_upstream_finalize_request(r, u, |
2199 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
2200 return; | |
2201 } | |
2202 | |
2203 if (status) { | |
2204 u->state->status = status; | |
2205 | |
525 | 2206 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) { |
479 | 2207 |
2208 #if (NGX_HTTP_CACHE) | |
2209 | |
2210 if (u->stale && (u->conf->use_stale & ft_type)) { | |
2211 ngx_http_upstream_finalize_request(r, u, | |
525 | 2212 ngx_http_send_cached_response(r)); |
479 | 2213 return; |
2214 } | |
2215 | |
2216 #endif | |
2217 | |
2218 ngx_http_upstream_finalize_request(r, u, status); | |
2219 return; | |
2220 } | |
2221 } | |
2222 | |
2223 if (u->peer.connection) { | |
2224 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2225 "close http upstream connection: %d", | |
2226 u->peer.connection->fd); | |
577 | 2227 #if (NGX_HTTP_SSL) |
884 | 2228 |
577 | 2229 if (u->peer.connection->ssl) { |
884 | 2230 u->peer.connection->ssl->no_wait_shutdown = 1; |
2231 u->peer.connection->ssl->no_send_shutdown = 1; | |
2232 | |
2233 (void) ngx_ssl_shutdown(u->peer.connection); | |
577 | 2234 } |
2235 #endif | |
884 | 2236 |
479 | 2237 ngx_close_connection(u->peer.connection); |
2238 } | |
2239 | |
2240 #if 0 | |
2241 if (u->conf->busy_lock && !u->busy_locked) { | |
2242 ngx_http_upstream_busy_lock(p); | |
2243 return; | |
2244 } | |
2245 #endif | |
2246 | |
2247 ngx_http_upstream_connect(r, u); | |
2248 } | |
2249 | |
2250 | |
487 | 2251 static void |
569 | 2252 ngx_http_upstream_cleanup(void *data) |
2253 { | |
2254 ngx_http_request_t *r = data; | |
2255 | |
2256 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2257 "cleanup http upstream request: \"%V\"", &r->uri); | |
2258 | |
2259 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE); | |
2260 } | |
2261 | |
2262 | |
2263 static void | |
487 | 2264 ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
2265 ngx_http_upstream_t *u, ngx_int_t rc) | |
479 | 2266 { |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2267 ngx_time_t *tp; |
563 | 2268 |
483 | 2269 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
2270 "finalize http upstream request: %i", rc); | |
479 | 2271 |
569 | 2272 *u->cleanup = NULL; |
2273 | |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2274 if (u->state->response_sec) { |
563 | 2275 tp = ngx_timeofday(); |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2276 u->state->response_sec = tp->sec - u->state->response_sec; |
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2277 u->state->response_msec = tp->msec - u->state->response_msec; |
563 | 2278 } |
2279 | |
479 | 2280 u->finalize_request(r, rc); |
2281 | |
884 | 2282 u->peer.free(&u->peer, u->peer.data, 0); |
2283 | |
479 | 2284 if (u->peer.connection) { |
884 | 2285 |
577 | 2286 #if (NGX_HTTP_SSL) |
2287 | |
2288 /* TODO: do not shutdown persistent connection */ | |
2289 | |
2290 if (u->peer.connection->ssl) { | |
884 | 2291 |
2292 /* | |
2293 * We send the "close notify" shutdown alert to the upstream only | |
2294 * and do not wait its "close notify" shutdown alert. | |
2295 * It is acceptable according to the TLS standard. | |
2296 */ | |
2297 | |
2298 u->peer.connection->ssl->no_wait_shutdown = 1; | |
2299 | |
2300 (void) ngx_ssl_shutdown(u->peer.connection); | |
577 | 2301 } |
2302 #endif | |
884 | 2303 |
2304 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2305 "close http upstream connection: %d", | |
2306 u->peer.connection->fd); | |
2307 | |
479 | 2308 ngx_close_connection(u->peer.connection); |
2309 } | |
2310 | |
483 | 2311 u->peer.connection = NULL; |
2312 | |
563 | 2313 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE)) |
479 | 2314 { |
2315 rc = 0; | |
2316 } | |
2317 | |
581 | 2318 if (u->pipe && u->pipe->temp_file) { |
479 | 2319 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
2320 "http upstream temp fd: %d", | |
581 | 2321 u->pipe->temp_file->file.fd); |
479 | 2322 } |
2323 | |
2324 #if 0 | |
2325 if (u->cache) { | |
2326 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
483 | 2327 "http upstream cache fd: %d", |
479 | 2328 u->cache->ctx.file.fd); |
2329 } | |
2330 #endif | |
2331 | |
515 | 2332 if (rc == NGX_DECLINED) { |
2333 return; | |
2334 } | |
2335 | |
483 | 2336 r->connection->log->action = "sending to client"; |
2337 | |
1270 | 2338 if (rc == 0) { |
2339 if (r == r->main) { | |
2340 if (!r->post_action) { | |
2341 rc = ngx_http_send_special(r, NGX_HTTP_LAST); | |
2342 } | |
2343 | |
2344 } else { | |
2345 if (r->out) { | |
2346 rc = NGX_AGAIN; | |
2347 } | |
2348 } | |
479 | 2349 } |
2350 | |
2351 ngx_http_finalize_request(r, rc); | |
2352 } | |
2353 | |
2354 | |
509 | 2355 static ngx_int_t |
2356 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2357 ngx_uint_t offset) | |
577 | 2358 { |
509 | 2359 ngx_table_elt_t **ph; |
577 | 2360 |
509 | 2361 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset); |
2362 | |
2363 if (*ph == NULL) { | |
2364 *ph = h; | |
2365 } | |
2366 | |
2367 return NGX_OK; | |
2368 } | |
2369 | |
2370 | |
2371 static ngx_int_t | |
2372 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
2373 ngx_table_elt_t *h, ngx_uint_t offset) | |
2374 { | |
2375 ngx_array_t *pa; | |
2376 ngx_table_elt_t **ph; | |
2377 | |
2378 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset); | |
2379 | |
2380 if (pa->elts == NULL) { | |
2381 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
2382 { | |
2383 return NGX_ERROR; | |
2384 } | |
2385 } | |
2386 | |
2387 ph = ngx_array_push(pa); | |
2388 if (ph == NULL) { | |
2389 return NGX_ERROR; | |
2390 } | |
2391 | |
2392 *ph = h; | |
2393 | |
2394 return NGX_OK; | |
2395 } | |
2396 | |
2397 | |
2398 static ngx_int_t | |
2399 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2400 ngx_uint_t offset) | |
2401 { | |
2402 return NGX_OK; | |
2403 } | |
2404 | |
2405 | |
2406 static ngx_int_t | |
527 | 2407 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h, |
2408 ngx_uint_t offset) | |
577 | 2409 { |
527 | 2410 ngx_int_t n; |
2411 | |
2412 r->upstream->headers_in.x_accel_limit_rate = h; | |
2413 | |
2414 n = ngx_atoi(h->value.data, h->value.len); | |
2415 | |
2416 if (n != NGX_ERROR) { | |
2417 r->limit_rate = (size_t) n; | |
2418 } | |
2419 | |
2420 return NGX_OK; | |
2421 } | |
2422 | |
2423 | |
2424 static ngx_int_t | |
649 | 2425 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h, |
2426 ngx_uint_t offset) | |
2427 { | |
2428 u_char c0, c1, c2; | |
2429 | |
2430 if (r->upstream->conf->change_buffering) { | |
2431 | |
2432 if (h->value.len == 2) { | |
2433 c0 = ngx_tolower(h->value.data[0]); | |
2434 c1 = ngx_tolower(h->value.data[1]); | |
2435 | |
2436 if (c0 == 'n' && c1 == 'o') { | |
2437 r->upstream->buffering = 0; | |
2438 } | |
2439 | |
2440 } else if (h->value.len == 3) { | |
2441 c0 = ngx_tolower(h->value.data[0]); | |
2442 c1 = ngx_tolower(h->value.data[1]); | |
2443 c2 = ngx_tolower(h->value.data[2]); | |
2444 | |
2445 if (c0 == 'y' && c1 == 'e' && c2 == 's') { | |
2446 r->upstream->buffering = 1; | |
2447 } | |
2448 } | |
2449 } | |
2450 | |
2451 return NGX_OK; | |
2452 } | |
2453 | |
2454 | |
2455 static ngx_int_t | |
657 | 2456 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h, |
2457 ngx_uint_t offset) | |
2458 { | |
2459 r->headers_out.override_charset = &h->value; | |
2460 | |
2461 return NGX_OK; | |
2462 } | |
2463 | |
2464 | |
2465 static ngx_int_t | |
509 | 2466 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
2467 ngx_uint_t offset) | |
2468 { | |
573 | 2469 ngx_table_elt_t *ho, **ph; |
509 | 2470 |
2471 ho = ngx_list_push(&r->headers_out.headers); | |
2472 if (ho == NULL) { | |
2473 return NGX_ERROR; | |
2474 } | |
2475 | |
2476 *ho = *h; | |
2477 | |
573 | 2478 if (offset) { |
2479 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset); | |
2480 *ph = ho; | |
2481 } | |
2482 | |
509 | 2483 return NGX_OK; |
2484 } | |
2485 | |
2486 | |
2487 static ngx_int_t | |
2488 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
2489 ngx_table_elt_t *h, ngx_uint_t offset) | |
2490 { | |
2491 ngx_array_t *pa; | |
2492 ngx_table_elt_t *ho, **ph; | |
2493 | |
2494 pa = (ngx_array_t *) ((char *) &r->headers_out + offset); | |
2495 | |
2496 if (pa->elts == NULL) { | |
2497 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
2498 { | |
2499 return NGX_ERROR; | |
2500 } | |
2501 } | |
2502 | |
2503 ph = ngx_array_push(pa); | |
2504 if (ph == NULL) { | |
2505 return NGX_ERROR; | |
2506 } | |
2507 | |
2508 ho = ngx_list_push(&r->headers_out.headers); | |
2509 if (ho == NULL) { | |
2510 return NGX_ERROR; | |
2511 } | |
2512 | |
2513 *ho = *h; | |
2514 *ph = ho; | |
2515 | |
2516 return NGX_OK; | |
2517 } | |
2518 | |
2519 | |
2520 static ngx_int_t | |
2521 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2522 ngx_uint_t offset) | |
2523 { | |
657 | 2524 u_char *p, *last; |
2525 | |
2526 r->headers_out.content_type_len = h->value.len; | |
509 | 2527 r->headers_out.content_type = h->value; |
2528 | |
657 | 2529 for (p = h->value.data; *p; p++) { |
2530 | |
2531 if (*p != ';') { | |
2532 continue; | |
2533 } | |
2534 | |
2535 last = p; | |
2536 | |
2537 while (*++p == ' ') { /* void */ } | |
2538 | |
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
Igor Sysoev <igor@sysoev.ru>
parents:
1098
diff
changeset
|
2539 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) { |
657 | 2540 continue; |
2541 } | |
2542 | |
2543 p += 8; | |
2544 | |
2545 r->headers_out.content_type_len = last - h->value.data; | |
2546 | |
2547 r->headers_out.charset.len = h->value.data + h->value.len - p; | |
2548 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
|
2549 |
c6c42497106c
fix segfault if upstream sends trailing ";" in "charset="
Igor Sysoev <igor@sysoev.ru>
parents:
1109
diff
changeset
|
2550 return NGX_OK; |
657 | 2551 } |
2552 | |
509 | 2553 return NGX_OK; |
2554 } | |
2555 | |
2556 | |
2557 static ngx_int_t | |
2558 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2559 ngx_uint_t offset) | |
2560 { | |
2561 ngx_table_elt_t *ho; | |
2562 | |
2563 ho = ngx_list_push(&r->headers_out.headers); | |
2564 if (ho == NULL) { | |
2565 return NGX_ERROR; | |
2566 } | |
2567 | |
2568 *ho = *h; | |
2569 | |
2570 r->headers_out.content_length = ho; | |
2571 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len); | |
2572 | |
2573 return NGX_OK; | |
2574 } | |
2575 | |
2576 | |
2577 static ngx_int_t | |
2578 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2579 ngx_uint_t offset) | |
2580 { | |
2581 ngx_int_t rc; | |
2582 ngx_table_elt_t *ho; | |
2583 | |
2584 ho = ngx_list_push(&r->headers_out.headers); | |
2585 if (ho == NULL) { | |
2586 return NGX_ERROR; | |
2587 } | |
2588 | |
2589 *ho = *h; | |
2590 | |
2591 if (r->upstream->rewrite_redirect) { | |
2592 rc = r->upstream->rewrite_redirect(r, ho, 0); | |
2593 | |
529 | 2594 if (rc == NGX_DECLINED) { |
2595 return NGX_OK; | |
2596 } | |
2597 | |
509 | 2598 if (rc == NGX_OK) { |
2599 r->headers_out.location = ho; | |
2600 | |
2601 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2602 "rewritten location: \"%V\"", &ho->value); | |
2603 } | |
2604 | |
2605 return rc; | |
2606 } | |
2607 | |
2608 /* | |
2609 * we do not set r->headers_out.location here to avoid the handling | |
2610 * the local redirects without a host name by ngx_http_header_filter() | |
2611 */ | |
2612 | |
2613 return NGX_OK; | |
2614 } | |
2615 | |
2616 | |
2617 static ngx_int_t | |
2618 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h, | |
2619 ngx_uint_t offset) | |
2620 { | |
2621 u_char *p; | |
2622 ngx_int_t rc; | |
2623 ngx_table_elt_t *ho; | |
2624 | |
2625 ho = ngx_list_push(&r->headers_out.headers); | |
2626 if (ho == NULL) { | |
2627 return NGX_ERROR; | |
2628 } | |
2629 | |
2630 *ho = *h; | |
2631 | |
2632 if (r->upstream->rewrite_redirect) { | |
2633 | |
1611
d5db0e96bcc6
r1542, r1543, r1544, r1549, r1550, r1551, r1555 merge:
Igor Sysoev <igor@sysoev.ru>
parents:
1533
diff
changeset
|
2634 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1); |
509 | 2635 |
2636 if (p) { | |
2637 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data); | |
2638 | |
2639 } else { | |
2640 return NGX_OK; | |
2641 } | |
2642 | |
529 | 2643 if (rc == NGX_DECLINED) { |
2644 return NGX_OK; | |
2645 } | |
2646 | |
509 | 2647 #if (NGX_DEBUG) |
2648 if (rc == NGX_OK) { | |
2649 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2650 "rewritten refresh: \"%V\"", &ho->value); | |
2651 } | |
2652 #endif | |
2653 | |
2654 return rc; | |
2655 } | |
2656 | |
2657 return NGX_OK; | |
2658 } | |
2659 | |
2660 | |
2661 #if (NGX_HTTP_GZIP) | |
2662 | |
2663 static ngx_int_t | |
2664 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
2665 ngx_table_elt_t *h, ngx_uint_t offset) | |
2666 { | |
2667 ngx_table_elt_t *ho; | |
2668 | |
2669 ho = ngx_list_push(&r->headers_out.headers); | |
2670 if (ho == NULL) { | |
2671 return NGX_ERROR; | |
2672 } | |
2673 | |
2674 *ho = *h; | |
2675 | |
2676 r->headers_out.content_encoding = ho; | |
2677 | |
2678 return NGX_OK; | |
2679 } | |
2680 | |
2681 #endif | |
2682 | |
2683 | |
487 | 2684 static ngx_int_t |
573 | 2685 ngx_http_upstream_add_variables(ngx_conf_t *cf) |
479 | 2686 { |
880 | 2687 ngx_http_variable_t *var, *v; |
479 | 2688 |
573 | 2689 for (v = ngx_http_upstream_vars; v->name.len; v++) { |
2690 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
2691 if (var == NULL) { | |
2692 return NGX_ERROR; | |
2693 } | |
2694 | |
637 | 2695 var->get_handler = v->get_handler; |
573 | 2696 var->data = v->data; |
2697 } | |
2698 | |
479 | 2699 return NGX_OK; |
2700 } | |
509 | 2701 |
2702 | |
573 | 2703 static ngx_int_t |
1181 | 2704 ngx_http_upstream_addr_variable(ngx_http_request_t *r, |
2705 ngx_http_variable_value_t *v, uintptr_t data) | |
2706 { | |
2707 u_char *p; | |
2708 size_t len; | |
2709 ngx_uint_t i; | |
2710 ngx_http_upstream_state_t *state; | |
2711 | |
2712 v->valid = 1; | |
1714 | 2713 v->no_cacheable = 0; |
1181 | 2714 v->not_found = 0; |
2715 | |
2716 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) { | |
2717 v->not_found = 1; | |
2718 return NGX_OK; | |
2719 } | |
2720 | |
2721 len = 0; | |
2722 state = r->upstream_states->elts; | |
2723 | |
2724 for (i = 0; i < r->upstream_states->nelts; i++) { | |
2725 if (state[i].peer) { | |
2726 len += state[i].peer->len + 2; | |
2727 | |
2728 } else { | |
2729 len += 3; | |
2730 } | |
2731 } | |
2732 | |
2733 p = ngx_palloc(r->pool, len); | |
2734 if (p == NULL) { | |
2735 return NGX_ERROR; | |
2736 } | |
2737 | |
2738 v->data = p; | |
2739 | |
2740 i = 0; | |
2741 | |
2742 for ( ;; ) { | |
2743 if (state[i].peer) { | |
2744 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len); | |
2745 } | |
2746 | |
2747 if (++i == r->upstream_states->nelts) { | |
2748 break; | |
2749 } | |
2750 | |
2751 if (state[i].peer) { | |
2752 *p++ = ','; | |
2753 *p++ = ' '; | |
2754 | |
2755 } else { | |
2756 *p++ = ' '; | |
2757 *p++ = ':'; | |
2758 *p++ = ' '; | |
2759 | |
2760 if (++i == r->upstream_states->nelts) { | |
2761 break; | |
2762 } | |
2763 | |
2764 continue; | |
2765 } | |
2766 } | |
2767 | |
2768 v->len = p - v->data; | |
2769 | |
2770 return NGX_OK; | |
2771 } | |
2772 | |
2773 | |
2774 static ngx_int_t | |
573 | 2775 ngx_http_upstream_status_variable(ngx_http_request_t *r, |
2776 ngx_http_variable_value_t *v, uintptr_t data) | |
2777 { | |
2778 u_char *p; | |
2779 size_t len; | |
2780 ngx_uint_t i; | |
2781 ngx_http_upstream_state_t *state; | |
2782 | |
2783 v->valid = 1; | |
1714 | 2784 v->no_cacheable = 0; |
573 | 2785 v->not_found = 0; |
2786 | |
1168
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2787 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) { |
573 | 2788 v->not_found = 1; |
2789 return NGX_OK; | |
2790 } | |
2791 | |
1168
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2792 len = r->upstream_states->nelts * (3 + 2); |
573 | 2793 |
2794 p = ngx_palloc(r->pool, len); | |
2795 if (p == NULL) { | |
2796 return NGX_ERROR; | |
2797 } | |
2798 | |
2799 v->data = p; | |
2800 | |
2801 i = 0; | |
1168
4d0d12446c3b
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Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2802 state = r->upstream_states->elts; |
573 | 2803 |
2804 for ( ;; ) { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2805 if (state[i].status) { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
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parents:
1166
diff
changeset
|
2806 p = ngx_sprintf(p, "%ui", state[i].status); |
573 | 2807 |
2808 } else { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2809 *p++ = '-'; |
573 | 2810 } |
2811 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2812 if (++i == r->upstream_states->nelts) { |
573 | 2813 break; |
2814 } | |
2815 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2816 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
|
2817 *p++ = ','; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2818 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2819 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2820 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2821 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2822 *p++ = ':'; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2823 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2824 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2825 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
|
2826 break; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2827 } |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2828 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2829 continue; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2830 } |
573 | 2831 } |
2832 | |
2833 v->len = p - v->data; | |
2834 | |
2835 return NGX_OK; | |
2836 } | |
2837 | |
2838 | |
2839 static ngx_int_t | |
2840 ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
2841 ngx_http_variable_value_t *v, uintptr_t data) | |
2842 { | |
2843 u_char *p; | |
2844 size_t len; | |
2845 ngx_uint_t i; | |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2846 ngx_msec_int_t ms; |
573 | 2847 ngx_http_upstream_state_t *state; |
2848 | |
2849 v->valid = 1; | |
1714 | 2850 v->no_cacheable = 0; |
573 | 2851 v->not_found = 0; |
2852 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2853 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) { |
573 | 2854 v->not_found = 1; |
2855 return NGX_OK; | |
2856 } | |
2857 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2858 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2); |
573 | 2859 |
2860 p = ngx_palloc(r->pool, len); | |
2861 if (p == NULL) { | |
2862 return NGX_ERROR; | |
2863 } | |
2864 | |
2865 v->data = p; | |
2866 | |
2867 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
|
2868 state = r->upstream_states->elts; |
573 | 2869 |
2870 for ( ;; ) { | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2871 if (state[i].status) { |
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2872 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
|
2873 ms = (ms >= 0) ? ms : 0; |
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2874 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
|
2875 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2876 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2877 *p++ = '-'; |
573 | 2878 } |
2879 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2880 if (++i == r->upstream_states->nelts) { |
573 | 2881 break; |
2882 } | |
2883 | |
1168
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2884 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
|
2885 *p++ = ','; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2886 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2887 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2888 } else { |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2889 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2890 *p++ = ':'; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2891 *p++ = ' '; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2892 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2893 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
|
2894 break; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2895 } |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2896 |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2897 continue; |
4d0d12446c3b
store the upstream states before X-Accel-Redirect to a next upstream
Igor Sysoev <igor@sysoev.ru>
parents:
1166
diff
changeset
|
2898 } |
573 | 2899 } |
2900 | |
2901 v->len = p - v->data; | |
2902 | |
2903 return NGX_OK; | |
2904 } | |
2905 | |
2906 | |
1162 | 2907 ngx_int_t |
2908 ngx_http_upstream_header_variable(ngx_http_request_t *r, | |
2909 ngx_http_variable_value_t *v, uintptr_t data) | |
2910 { | |
2911 if (r->upstream == NULL) { | |
2912 v->not_found = 1; | |
2913 return NGX_OK; | |
2914 } | |
2915 | |
2916 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data, | |
2917 &r->upstream->headers_in.headers.part, | |
2918 sizeof("upstream_http_") - 1); | |
2919 } | |
2920 | |
2921 | |
651 | 2922 static char * |
2923 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) | |
2924 { | |
884 | 2925 char *rv; |
2926 void *mconf; | |
2927 ngx_str_t *value; | |
2928 ngx_url_t u; | |
2929 ngx_uint_t m; | |
2930 ngx_conf_t pcf; | |
2931 ngx_http_module_t *module; | |
2932 ngx_http_conf_ctx_t *ctx, *http_ctx; | |
2933 ngx_http_upstream_srv_conf_t *uscf; | |
2934 | |
2935 ngx_memzero(&u, sizeof(ngx_url_t)); | |
2936 | |
2937 value = cf->args->elts; | |
2938 u.host = value[1]; | |
2939 u.no_resolve = 1; | |
2940 | |
2941 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE | |
2942 |NGX_HTTP_UPSTREAM_WEIGHT | |
2943 |NGX_HTTP_UPSTREAM_MAX_FAILS | |
2944 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT | |
2945 |NGX_HTTP_UPSTREAM_DOWN | |
2946 |NGX_HTTP_UPSTREAM_BACKUP); | |
2947 if (uscf == NULL) { | |
2948 return NGX_CONF_ERROR; | |
2949 } | |
2950 | |
651 | 2951 |
2952 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); | |
2953 if (ctx == NULL) { | |
2954 return NGX_CONF_ERROR; | |
2955 } | |
2956 | |
884 | 2957 http_ctx = cf->ctx; |
2958 ctx->main_conf = http_ctx->main_conf; | |
651 | 2959 |
2960 /* the upstream{}'s srv_conf */ | |
2961 | |
2962 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
2963 if (ctx->srv_conf == NULL) { | |
2964 return NGX_CONF_ERROR; | |
2965 } | |
2966 | |
2967 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf; | |
2968 | |
884 | 2969 uscf->srv_conf = ctx->srv_conf; |
2970 | |
651 | 2971 |
2972 /* the upstream{}'s loc_conf */ | |
2973 | |
2974 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
2975 if (ctx->loc_conf == NULL) { | |
2976 return NGX_CONF_ERROR; | |
2977 } | |
2978 | |
2979 for (m = 0; ngx_modules[m]; m++) { | |
2980 if (ngx_modules[m]->type != NGX_HTTP_MODULE) { | |
2981 continue; | |
2982 } | |
2983 | |
2984 module = ngx_modules[m]->ctx; | |
2985 | |
884 | 2986 if (module->create_srv_conf) { |
2987 mconf = module->create_srv_conf(cf); | |
2988 if (mconf == NULL) { | |
2989 return NGX_CONF_ERROR; | |
2990 } | |
2991 | |
2992 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; | |
2993 } | |
2994 | |
651 | 2995 if (module->create_loc_conf) { |
2996 mconf = module->create_loc_conf(cf); | |
2997 if (mconf == NULL) { | |
2998 return NGX_CONF_ERROR; | |
2999 } | |
3000 | |
3001 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf; | |
3002 } | |
3003 } | |
3004 | |
3005 | |
3006 /* parse inside upstream{} */ | |
3007 | |
3008 pcf = *cf; | |
3009 cf->ctx = ctx; | |
3010 cf->cmd_type = NGX_HTTP_UPS_CONF; | |
3011 | |
3012 rv = ngx_conf_parse(cf, NULL); | |
3013 | |
3014 *cf = pcf; | |
3015 | |
3016 if (rv != NGX_CONF_OK) { | |
3017 return rv; | |
3018 } | |
3019 | |
3020 if (uscf->servers == NULL) { | |
3021 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
3022 "no servers are inside upstream"); | |
3023 return NGX_CONF_ERROR; | |
3024 } | |
3025 | |
3026 return rv; | |
3027 } | |
3028 | |
3029 | |
3030 static char * | |
3031 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
3032 { | |
3033 ngx_http_upstream_srv_conf_t *uscf = conf; | |
3034 | |
884 | 3035 time_t fail_timeout; |
3036 ngx_str_t *value, s; | |
3037 ngx_url_t u; | |
3038 ngx_int_t weight, max_fails; | |
3039 ngx_uint_t i; | |
3040 ngx_http_upstream_server_t *us; | |
651 | 3041 |
3042 if (uscf->servers == NULL) { | |
884 | 3043 uscf->servers = ngx_array_create(cf->pool, 4, |
3044 sizeof(ngx_http_upstream_server_t)); | |
651 | 3045 if (uscf->servers == NULL) { |
3046 return NGX_CONF_ERROR; | |
3047 } | |
3048 } | |
3049 | |
884 | 3050 us = ngx_array_push(uscf->servers); |
3051 if (us == NULL) { | |
651 | 3052 return NGX_CONF_ERROR; |
3053 } | |
3054 | |
884 | 3055 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); |
3056 | |
651 | 3057 value = cf->args->elts; |
3058 | |
3059 ngx_memzero(&u, sizeof(ngx_url_t)); | |
3060 | |
3061 u.url = value[1]; | |
906 | 3062 u.default_port = 80; |
651 | 3063 |
1710 | 3064 if (ngx_parse_url(cf->pool, &u) != NGX_OK) { |
651 | 3065 if (u.err) { |
3066 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
3067 "%s in upstream \"%V\"", u.err, &u.url); | |
3068 } | |
3069 | |
3070 return NGX_CONF_ERROR; | |
3071 } | |
3072 | |
663 | 3073 weight = 1; |
884 | 3074 max_fails = 1; |
3075 fail_timeout = 10; | |
3076 | |
3077 for (i = 2; i < cf->args->nelts; i++) { | |
3078 | |
3079 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) { | |
3080 | |
3081 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) { | |
3082 goto invalid; | |
3083 } | |
3084 | |
3085 weight = ngx_atoi(&value[i].data[7], value[i].len - 7); | |
663 | 3086 |
3087 if (weight == NGX_ERROR || weight == 0) { | |
3088 goto invalid; | |
3089 } | |
3090 | |
884 | 3091 continue; |
3092 } | |
3093 | |
3094 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) { | |
3095 | |
3096 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) { | |
3097 goto invalid; | |
3098 } | |
3099 | |
3100 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10); | |
3101 | |
3102 if (max_fails == NGX_ERROR) { | |
3103 goto invalid; | |
3104 } | |
3105 | |
3106 continue; | |
663 | 3107 } |
884 | 3108 |
3109 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) { | |
3110 | |
3111 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) { | |
3112 goto invalid; | |
3113 } | |
3114 | |
3115 s.len = value[i].len - 13; | |
3116 s.data = &value[i].data[13]; | |
3117 | |
3118 fail_timeout = ngx_parse_time(&s, 1); | |
3119 | |
3120 if (fail_timeout < 0) { | |
3121 goto invalid; | |
3122 } | |
3123 | |
3124 continue; | |
3125 } | |
3126 | |
3127 if (ngx_strncmp(value[i].data, "down", 4) == 0) { | |
3128 | |
3129 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) { | |
3130 goto invalid; | |
3131 } | |
3132 | |
3133 us->down = 1; | |
3134 | |
3135 continue; | |
3136 } | |
3137 | |
3138 goto invalid; | |
663 | 3139 } |
3140 | |
884 | 3141 us->addrs = u.addrs; |
3142 us->naddrs = u.naddrs; | |
3143 us->weight = weight; | |
3144 us->max_fails = max_fails; | |
3145 us->fail_timeout = fail_timeout; | |
651 | 3146 |
3147 return NGX_CONF_OK; | |
663 | 3148 |
3149 invalid: | |
3150 | |
884 | 3151 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
3152 "invalid parameter \"%V\"", &value[i]); | |
663 | 3153 |
3154 return NGX_CONF_ERROR; | |
651 | 3155 } |
3156 | |
3157 | |
3158 ngx_http_upstream_srv_conf_t * | |
884 | 3159 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags) |
651 | 3160 { |
3161 ngx_uint_t i; | |
884 | 3162 ngx_http_upstream_server_t *us; |
651 | 3163 ngx_http_upstream_srv_conf_t *uscf, **uscfp; |
3164 ngx_http_upstream_main_conf_t *umcf; | |
3165 | |
884 | 3166 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) { |
3167 | |
1710 | 3168 if (ngx_parse_url(cf->pool, u) != NGX_OK) { |
651 | 3169 if (u->err) { |
3170 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
3171 "%s in upstream \"%V\"", u->err, &u->url); | |
3172 } | |
3173 | |
3174 return NULL; | |
3175 } | |
3176 } | |
3177 | |
3178 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module); | |
3179 | |
3180 uscfp = umcf->upstreams.elts; | |
3181 | |
3182 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
906 | 3183 |
3184 if (uscfp[i]->host.len != u->host.len | |
884 | 3185 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len) |
3186 != 0) | |
3187 { | |
651 | 3188 continue; |
3189 } | |
3190 | |
884 | 3191 if ((flags & NGX_HTTP_UPSTREAM_CREATE) |
3192 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE)) | |
651 | 3193 { |
884 | 3194 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
3195 "duplicate upstream \"%V\"", &u->host); | |
3196 return NULL; | |
651 | 3197 } |
884 | 3198 |
906 | 3199 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) { |
884 | 3200 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
906 | 3201 "upstream \"%V\" may not have port %d", |
3202 &u->host, u->port); | |
3203 return NULL; | |
3204 } | |
3205 | |
3206 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) { | |
3207 ngx_log_error(NGX_LOG_WARN, cf->log, 0, | |
3208 "upstream \"%V\" may not have port %d in %s:%ui", | |
3209 &u->host, uscfp[i]->port, | |
1533 | 3210 uscfp[i]->file_name, uscfp[i]->line); |
906 | 3211 return NULL; |
3212 } | |
3213 | |
3214 if (uscfp[i]->port != u->port) { | |
3215 continue; | |
884 | 3216 } |
3217 | |
1504 | 3218 if (uscfp[i]->default_port && u->default_port |
3219 && uscfp[i]->default_port != u->default_port) | |
3220 { | |
3221 continue; | |
3222 } | |
3223 | |
884 | 3224 return uscfp[i]; |
651 | 3225 } |
3226 | |
3227 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t)); | |
3228 if (uscf == NULL) { | |
3229 return NULL; | |
3230 } | |
3231 | |
884 | 3232 uscf->flags = flags; |
651 | 3233 uscf->host = u->host; |
1533 | 3234 uscf->file_name = cf->conf_file->file.name.data; |
651 | 3235 uscf->line = cf->conf_file->line; |
906 | 3236 uscf->port = u->port; |
3237 uscf->default_port = u->default_port; | |
884 | 3238 |
3239 if (u->naddrs == 1) { | |
3240 uscf->servers = ngx_array_create(cf->pool, 1, | |
3241 sizeof(ngx_http_upstream_server_t)); | |
3242 if (uscf->servers == NULL) { | |
3243 return NGX_CONF_ERROR; | |
3244 } | |
3245 | |
3246 us = ngx_array_push(uscf->servers); | |
3247 if (us == NULL) { | |
3248 return NGX_CONF_ERROR; | |
3249 } | |
3250 | |
3251 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); | |
3252 | |
3253 us->addrs = u->addrs; | |
3254 us->naddrs = u->naddrs; | |
3255 } | |
651 | 3256 |
3257 uscfp = ngx_array_push(&umcf->upstreams); | |
3258 if (uscfp == NULL) { | |
3259 return NULL; | |
3260 } | |
3261 | |
3262 *uscfp = uscf; | |
3263 | |
3264 return uscf; | |
3265 } | |
3266 | |
3267 | |
509 | 3268 static void * |
3269 ngx_http_upstream_create_main_conf(ngx_conf_t *cf) | |
3270 { | |
3271 ngx_http_upstream_main_conf_t *umcf; | |
3272 | |
3273 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t)); | |
3274 if (umcf == NULL) { | |
3275 return NULL; | |
3276 } | |
3277 | |
651 | 3278 if (ngx_array_init(&umcf->upstreams, cf->pool, 4, |
3279 sizeof(ngx_http_upstream_srv_conf_t *)) | |
3280 != NGX_OK) | |
3281 { | |
3282 return NGX_CONF_ERROR; | |
3283 } | |
3284 | |
509 | 3285 return umcf; |
3286 } | |
3287 | |
3288 | |
3289 static char * | |
651 | 3290 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf) |
509 | 3291 { |
3292 ngx_http_upstream_main_conf_t *umcf = conf; | |
3293 | |
651 | 3294 ngx_uint_t i; |
3295 ngx_array_t headers_in; | |
3296 ngx_hash_key_t *hk; | |
3297 ngx_hash_init_t hash; | |
884 | 3298 ngx_http_upstream_init_pt init; |
651 | 3299 ngx_http_upstream_header_t *header; |
3300 ngx_http_upstream_srv_conf_t **uscfp; | |
3301 | |
3302 uscfp = umcf->upstreams.elts; | |
3303 | |
3304 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
884 | 3305 |
3306 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream: | |
3307 ngx_http_upstream_init_round_robin; | |
3308 | |
3309 if (init(cf, uscfp[i]) != NGX_OK) { | |
651 | 3310 return NGX_CONF_ERROR; |
3311 } | |
3312 } | |
649 | 3313 |
663 | 3314 |
884 | 3315 /* upstream_headers_in_hash */ |
3316 | |
649 | 3317 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t)) |
3318 != NGX_OK) | |
509 | 3319 { |
3320 return NGX_CONF_ERROR; | |
3321 } | |
3322 | |
649 | 3323 for (header = ngx_http_upstream_headers_in; header->name.len; header++) { |
3324 hk = ngx_array_push(&headers_in); | |
3325 if (hk == NULL) { | |
3326 return NGX_CONF_ERROR; | |
3327 } | |
3328 | |
3329 hk->key = header->name; | |
3330 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len); | |
3331 hk->value = header; | |
3332 } | |
3333 | |
3334 hash.hash = &umcf->headers_in_hash; | |
3335 hash.key = ngx_hash_key_lc; | |
3336 hash.max_size = 512; | |
751
bae59a740c40
align hash bucket size to cache line
Igor Sysoev <igor@sysoev.ru>
parents:
750
diff
changeset
|
3337 hash.bucket_size = ngx_align(64, ngx_cacheline_size); |
649 | 3338 hash.name = "upstream_headers_in_hash"; |
3339 hash.pool = cf->pool; | |
3340 hash.temp_pool = NULL; | |
3341 | |
3342 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) { | |
3343 return NGX_CONF_ERROR; | |
3344 } | |
509 | 3345 |
3346 return NGX_CONF_OK; | |
3347 } |