Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.c @ 880:3b763d36e055
axe old % log format
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 27 Nov 2006 14:46:15 +0000 |
| parents | a164e55b4067 |
| children | 4d68c486fcb0 |
| 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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4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
24 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev); |
| 479 | 25 static void ngx_http_upstream_send_response(ngx_http_request_t *r, |
| 487 | 26 ngx_http_upstream_t *u); |
| 581 | 27 static void |
| 28 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r); | |
| 29 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev); | |
| 30 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data); | |
| 31 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data, | |
| 32 ssize_t bytes); | |
| 509 | 33 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r); |
| 479 | 34 static void ngx_http_upstream_process_body(ngx_event_t *ev); |
| 35 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev); | |
| 36 static void ngx_http_upstream_next(ngx_http_request_t *r, | |
| 487 | 37 ngx_http_upstream_t *u, ngx_uint_t ft_type); |
| 569 | 38 static void ngx_http_upstream_cleanup(void *data); |
| 479 | 39 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
| 487 | 40 ngx_http_upstream_t *u, ngx_int_t rc); |
| 479 | 41 |
| 509 | 42 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r, |
| 43 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 44 static ngx_int_t | |
| 45 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
| 46 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 47 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, | |
| 48 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 527 | 49 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, |
| 50 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 649 | 51 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r, |
| 509 | 52 ngx_table_elt_t *h, ngx_uint_t offset); |
| 657 | 53 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r, |
| 54 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 649 | 55 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r, |
| 509 | 56 ngx_table_elt_t *h, ngx_uint_t offset); |
| 57 static ngx_int_t | |
| 58 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
| 59 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 60 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r, | |
| 61 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 62 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r, | |
| 63 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 64 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r, | |
| 65 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 66 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, | |
| 67 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 68 #if (NGX_HTTP_GZIP) | |
| 69 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
| 70 ngx_table_elt_t *h, ngx_uint_t offset); | |
| 71 #endif | |
| 72 | |
| 573 | 73 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf); |
| 74 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r, | |
| 75 ngx_http_variable_value_t *v, uintptr_t data); | |
| 76 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
| 77 ngx_http_variable_value_t *v, uintptr_t data); | |
| 78 | |
| 651 | 79 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy); |
| 80 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 81 void *conf); | |
| 82 | |
| 509 | 83 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf); |
| 651 | 84 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf); |
| 509 | 85 |
| 577 | 86 #if (NGX_HTTP_SSL) |
| 591 | 87 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *, |
| 88 ngx_http_upstream_t *u, ngx_connection_t *c); | |
| 577 | 89 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c); |
| 90 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, | |
| 91 ngx_peer_t *peer); | |
| 92 #endif | |
| 93 | |
| 509 | 94 |
| 95 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = { | |
| 96 | |
| 97 { ngx_string("Status"), | |
| 98 ngx_http_upstream_process_header_line, | |
| 99 offsetof(ngx_http_upstream_headers_in_t, status), | |
| 649 | 100 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 509 | 101 |
| 102 { ngx_string("Content-Type"), | |
| 103 ngx_http_upstream_process_header_line, | |
| 104 offsetof(ngx_http_upstream_headers_in_t, content_type), | |
| 673 | 105 ngx_http_upstream_copy_content_type, 0, 1 }, |
| 509 | 106 |
| 107 { ngx_string("Content-Length"), | |
| 108 ngx_http_upstream_process_header_line, | |
| 109 offsetof(ngx_http_upstream_headers_in_t, content_length), | |
| 515 | 110 ngx_http_upstream_copy_content_length, 0, 0 }, |
| 509 | 111 |
| 112 { ngx_string("Date"), | |
| 113 ngx_http_upstream_process_header_line, | |
| 114 offsetof(ngx_http_upstream_headers_in_t, date), | |
| 649 | 115 ngx_http_upstream_copy_header_line, |
| 116 offsetof(ngx_http_headers_out_t, date), 0 }, | |
| 509 | 117 |
| 118 { ngx_string("Server"), | |
| 119 ngx_http_upstream_process_header_line, | |
| 120 offsetof(ngx_http_upstream_headers_in_t, server), | |
| 649 | 121 ngx_http_upstream_copy_header_line, |
| 122 offsetof(ngx_http_headers_out_t, server), 0 }, | |
| 509 | 123 |
| 529 | 124 { ngx_string("WWW-Authenticate"), |
| 125 ngx_http_upstream_process_header_line, | |
| 126 offsetof(ngx_http_upstream_headers_in_t, www_authenticate), | |
| 127 ngx_http_upstream_copy_header_line, 0, 0 }, | |
| 128 | |
| 509 | 129 { ngx_string("Location"), |
| 130 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 131 ngx_http_upstream_rewrite_location, 0, 0 }, |
| 509 | 132 |
| 133 { ngx_string("Refresh"), | |
| 134 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 135 ngx_http_upstream_rewrite_refresh, 0, 0 }, |
| 136 | |
| 137 { ngx_string("Set-Cookie"), | |
| 138 ngx_http_upstream_ignore_header_line, 0, | |
| 531 | 139 ngx_http_upstream_copy_header_line, 0, 1 }, |
| 140 | |
| 141 { ngx_string("Content-Disposition"), | |
| 142 ngx_http_upstream_ignore_header_line, 0, | |
| 143 ngx_http_upstream_copy_header_line, 0, 1 }, | |
| 509 | 144 |
| 145 { ngx_string("Cache-Control"), | |
| 146 ngx_http_upstream_process_multi_header_lines, | |
| 147 offsetof(ngx_http_upstream_headers_in_t, cache_control), | |
| 148 ngx_http_upstream_copy_multi_header_lines, | |
| 515 | 149 offsetof(ngx_http_headers_out_t, cache_control), 1 }, |
| 509 | 150 |
| 573 | 151 { ngx_string("Expires"), |
| 152 ngx_http_upstream_process_header_line, | |
| 153 offsetof(ngx_http_upstream_headers_in_t, expires), | |
| 154 ngx_http_upstream_copy_header_line, | |
| 155 offsetof(ngx_http_headers_out_t, expires), 1 }, | |
| 156 | |
| 577 | 157 { ngx_string("Accept-Ranges"), |
| 158 ngx_http_upstream_process_header_line, | |
| 159 offsetof(ngx_http_upstream_headers_in_t, accept_ranges), | |
| 160 ngx_http_upstream_copy_header_line, | |
| 161 offsetof(ngx_http_headers_out_t, accept_ranges), 1 }, | |
| 162 | |
| 509 | 163 { ngx_string("Connection"), |
| 164 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 165 ngx_http_upstream_ignore_header_line, 0, 0 }, |
| 509 | 166 |
| 641 | 167 { ngx_string("Keep-Alive"), |
| 168 ngx_http_upstream_ignore_header_line, 0, | |
| 169 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 170 | |
| 509 | 171 { ngx_string("X-Powered-By"), |
| 172 ngx_http_upstream_ignore_header_line, 0, | |
| 649 | 173 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 509 | 174 |
| 175 { ngx_string("X-Accel-Expires"), | |
| 176 ngx_http_upstream_process_header_line, | |
| 177 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires), | |
| 649 | 178 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 515 | 179 |
| 180 { ngx_string("X-Accel-Redirect"), | |
| 181 ngx_http_upstream_process_header_line, | |
| 182 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect), | |
| 183 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 509 | 184 |
| 527 | 185 { ngx_string("X-Accel-Limit-Rate"), |
| 186 ngx_http_upstream_process_limit_rate, 0, | |
| 187 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 188 | |
| 649 | 189 { ngx_string("X-Accel-Buffering"), |
| 190 ngx_http_upstream_process_buffering, 0, | |
| 191 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 192 | |
| 657 | 193 { ngx_string("X-Accel-Charset"), |
| 194 ngx_http_upstream_process_charset, 0, | |
| 195 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 196 | |
| 509 | 197 #if (NGX_HTTP_GZIP) |
| 198 { ngx_string("Content-Encoding"), | |
| 199 ngx_http_upstream_process_header_line, | |
| 200 offsetof(ngx_http_upstream_headers_in_t, content_encoding), | |
| 515 | 201 ngx_http_upstream_copy_content_encoding, 0, 0 }, |
| 509 | 202 #endif |
| 203 | |
| 515 | 204 { ngx_null_string, NULL, 0, NULL, 0, 0 } |
| 509 | 205 }; |
| 479 | 206 |
| 207 | |
| 651 | 208 static ngx_command_t ngx_http_upstream_commands[] = { |
| 209 | |
| 210 { ngx_string("upstream"), | |
| 211 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1, | |
| 212 ngx_http_upstream, | |
| 213 0, | |
| 214 0, | |
| 215 NULL }, | |
| 216 | |
| 217 { ngx_string("server"), | |
| 663 | 218 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12, |
| 651 | 219 ngx_http_upstream_server, |
| 220 NGX_HTTP_SRV_CONF_OFFSET, | |
| 221 0, | |
| 222 NULL }, | |
| 223 | |
| 224 ngx_null_command | |
| 225 }; | |
| 226 | |
| 227 | |
| 228 static ngx_http_module_t ngx_http_upstream_module_ctx = { | |
| 573 | 229 ngx_http_upstream_add_variables, /* preconfiguration */ |
| 509 | 230 NULL, /* postconfiguration */ |
| 231 | |
| 232 ngx_http_upstream_create_main_conf, /* create main configuration */ | |
| 651 | 233 ngx_http_upstream_init_main_conf, /* init main configuration */ |
| 479 | 234 |
| 235 NULL, /* create server configuration */ | |
| 236 NULL, /* merge server configuration */ | |
| 237 | |
| 238 NULL, /* create location configuration */ | |
| 239 NULL /* merge location configuration */ | |
| 240 }; | |
| 577 | 241 |
| 479 | 242 |
| 243 ngx_module_t ngx_http_upstream_module = { | |
| 509 | 244 NGX_MODULE_V1, |
| 479 | 245 &ngx_http_upstream_module_ctx, /* module context */ |
| 651 | 246 ngx_http_upstream_commands, /* module directives */ |
| 479 | 247 NGX_HTTP_MODULE, /* module type */ |
| 541 | 248 NULL, /* init master */ |
| 479 | 249 NULL, /* init module */ |
| 541 | 250 NULL, /* init process */ |
| 251 NULL, /* init thread */ | |
| 252 NULL, /* exit thread */ | |
| 253 NULL, /* exit process */ | |
| 254 NULL, /* exit master */ | |
| 255 NGX_MODULE_V1_PADDING | |
| 479 | 256 }; |
| 257 | |
| 258 | |
| 573 | 259 static ngx_http_variable_t ngx_http_upstream_vars[] = { |
| 260 | |
| 637 | 261 { ngx_string("upstream_status"), NULL, |
| 583 | 262 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| 573 | 263 |
| 637 | 264 { ngx_string("upstream_response_time"), NULL, |
| 583 | 265 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| 573 | 266 |
| 637 | 267 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
| 573 | 268 }; |
| 269 | |
| 270 | |
| 487 | 271 void |
| 272 ngx_http_upstream_init(ngx_http_request_t *r) | |
| 479 | 273 { |
| 509 | 274 ngx_connection_t *c; |
| 569 | 275 ngx_http_cleanup_t *cln; |
| 509 | 276 ngx_http_upstream_t *u; |
| 277 ngx_http_core_loc_conf_t *clcf; | |
| 479 | 278 |
| 279 c = r->connection; | |
| 280 | |
| 281 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 282 "http init upstream, client timer: %d", c->read->timer_set); | |
| 283 | |
| 284 if (c->read->timer_set) { | |
| 285 ngx_del_timer(c->read); | |
| 286 } | |
| 287 | |
| 629 | 288 u = r->upstream; |
| 289 | |
| 290 if (!r->post_action && !u->conf->ignore_client_abort) { | |
| 615 | 291 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection; |
| 292 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection; | |
| 293 } | |
| 577 | 294 |
| 479 | 295 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { |
| 296 | |
| 297 if (!c->write->active) { | |
| 531 | 298 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT) |
| 299 == NGX_ERROR) | |
| 479 | 300 { |
| 301 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 302 return; | |
| 303 } | |
| 304 } | |
| 305 } | |
| 306 | |
| 537 | 307 if (r->request_body) { |
| 308 u->request_bufs = r->request_body->bufs; | |
| 309 } | |
| 509 | 310 |
| 537 | 311 if (u->create_request(r) != NGX_OK) { |
| 479 | 312 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 313 return; | |
| 314 } | |
| 315 | |
| 316 u->peer.log = r->connection->log; | |
| 509 | 317 |
| 318 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 479 | 319 |
| 320 u->output.sendfile = r->connection->sendfile; | |
| 321 u->output.pool = r->pool; | |
| 322 u->output.bufs.num = 1; | |
| 509 | 323 u->output.bufs.size = clcf->client_body_buffer_size; |
| 479 | 324 u->output.output_filter = ngx_chain_writer; |
| 325 u->output.filter_ctx = &u->writer; | |
| 326 | |
| 327 u->writer.pool = r->pool; | |
| 328 | |
| 329 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number, | |
| 569 | 330 sizeof(ngx_http_upstream_state_t)) |
| 331 != NGX_OK) | |
| 479 | 332 { |
| 333 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 334 return; | |
| 335 } | |
| 336 | |
| 593 | 337 cln = ngx_http_cleanup_add(r, 0); |
| 569 | 338 if (cln == NULL) { |
| 339 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 340 return; | |
| 341 } | |
| 342 | |
| 343 cln->handler = ngx_http_upstream_cleanup; | |
| 344 cln->data = r; | |
| 345 u->cleanup = &cln->handler; | |
| 346 | |
| 479 | 347 ngx_http_upstream_connect(r, u); |
| 348 } | |
| 349 | |
| 350 | |
| 487 | 351 static void |
| 509 | 352 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r) |
| 353 { | |
| 354 ngx_http_upstream_check_broken_connection(r, r->connection->read); | |
| 355 } | |
| 356 | |
| 357 | |
| 358 static void | |
| 359 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r) | |
| 360 { | |
| 361 ngx_http_upstream_check_broken_connection(r, r->connection->write); | |
| 362 } | |
| 363 | |
| 364 | |
| 365 static void | |
| 366 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r, | |
| 367 ngx_event_t *ev) | |
| 479 | 368 { |
| 369 int n; | |
| 370 char buf[1]; | |
| 577 | 371 ngx_err_t err; |
| 479 | 372 ngx_connection_t *c; |
| 373 ngx_http_upstream_t *u; | |
| 374 | |
| 527 | 375 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
| 376 "http upstream check client, write event:%d, \"%V\"", | |
| 377 ev->write, &r->uri); | |
| 479 | 378 |
| 509 | 379 c = r->connection; |
| 483 | 380 u = r->upstream; |
| 381 | |
| 583 | 382 if (c->error) { |
| 527 | 383 ngx_http_upstream_finalize_request(r, u, |
| 384 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 385 return; | |
| 386 } | |
| 387 | |
| 483 | 388 if (u->peer.connection == NULL) { |
| 389 return; | |
| 390 } | |
| 391 | |
| 479 | 392 #if (NGX_HAVE_KQUEUE) |
| 393 | |
| 394 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
| 395 | |
| 396 if (!ev->pending_eof) { | |
| 397 return; | |
| 398 } | |
| 399 | |
| 400 ev->eof = 1; | |
| 583 | 401 c->error = 1; |
| 479 | 402 |
| 403 if (ev->kq_errno) { | |
| 404 ev->error = 1; | |
| 405 } | |
| 406 | |
| 407 if (!u->cachable && u->peer.connection) { | |
| 408 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
| 527 | 409 "kevent() reported that client closed prematurely " |
| 410 "connection, so upstream connection is closed too"); | |
| 479 | 411 ngx_http_upstream_finalize_request(r, u, |
| 412 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 413 return; | |
| 414 } | |
| 415 | |
| 416 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
| 417 "kevent() reported that client closed " | |
| 418 "prematurely connection"); | |
| 419 | |
| 420 if (u->peer.connection == NULL) { | |
| 421 ngx_http_upstream_finalize_request(r, u, | |
| 422 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 423 return; | |
| 424 } | |
| 425 | |
| 426 return; | |
| 427 } | |
| 428 | |
| 429 #endif | |
| 430 | |
| 431 n = recv(c->fd, buf, 1, MSG_PEEK); | |
| 432 | |
| 433 err = ngx_socket_errno; | |
| 434 | |
| 435 /* | |
| 436 * we do not need to disable the write event because | |
| 437 * that event has NGX_USE_CLEAR_EVENT type | |
| 438 */ | |
| 439 | |
| 440 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) { | |
| 441 return; | |
| 442 } | |
| 443 | |
| 444 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) { | |
| 445 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { | |
| 446 ngx_http_upstream_finalize_request(r, u, | |
| 447 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 448 return; | |
| 449 } | |
| 450 } | |
| 451 | |
| 452 if (n > 0) { | |
| 453 return; | |
| 454 } | |
| 455 | |
| 456 if (n == -1) { | |
| 457 if (err == NGX_EAGAIN) { | |
| 458 return; | |
| 459 } | |
| 460 | |
| 461 ev->error = 1; | |
| 462 | |
| 483 | 463 } else { /* n == 0 */ |
| 479 | 464 err = 0; |
| 465 } | |
| 466 | |
| 529 | 467 ev->eof = 1; |
| 583 | 468 c->error = 1; |
| 529 | 469 |
| 479 | 470 if (!u->cachable && u->peer.connection) { |
| 471 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
| 472 "client closed prematurely connection, " | |
| 473 "so upstream connection is closed too"); | |
| 474 ngx_http_upstream_finalize_request(r, u, | |
| 475 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 476 return; | |
| 477 } | |
| 478 | |
| 479 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
| 480 "client closed prematurely connection"); | |
| 481 | |
| 482 if (u->peer.connection == NULL) { | |
| 483 ngx_http_upstream_finalize_request(r, u, | |
| 484 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 485 return; | |
| 486 } | |
| 487 } | |
| 488 | |
| 489 | |
| 487 | 490 static void |
| 491 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 479 | 492 { |
| 591 | 493 ngx_int_t rc; |
| 665 | 494 ngx_time_t *tp; |
|
850
a164e55b4067
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Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
495 ngx_msec_int_t ms; |
| 591 | 496 ngx_connection_t *c; |
| 479 | 497 |
| 483 | 498 r->connection->log->action = "connecting to upstream"; |
| 479 | 499 |
| 500 r->connection->single_connection = 0; | |
| 501 | |
| 665 | 502 if (u->state && u->state->response_time) { |
| 503 tp = ngx_timeofday(); | |
|
850
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
504 ms = tp->sec * 1000 + tp->msec - u->state->response_time; |
|
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
505 u->state->response_time = (ms >= 0) ? ms : 0; |
| 665 | 506 } |
| 507 | |
| 508 u->state = ngx_array_push(&u->states); | |
| 509 if (u->state == NULL) { | |
| 510 ngx_http_upstream_finalize_request(r, u, | |
| 511 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 512 return; | |
| 513 } | |
| 514 | |
| 515 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); | |
| 516 | |
| 517 tp = ngx_timeofday(); | |
| 518 u->state->response_time = tp->sec * 1000 + tp->msec; | |
| 519 | |
| 479 | 520 rc = ngx_event_connect_peer(&u->peer); |
| 521 | |
| 522 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 523 "http upstream connect: %i", rc); | |
| 524 | |
| 525 if (rc == NGX_ERROR) { | |
| 526 ngx_http_upstream_finalize_request(r, u, | |
| 527 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 528 return; | |
| 529 } | |
| 530 | |
| 591 | 531 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name; |
| 479 | 532 |
| 543 | 533 if (rc == NGX_BUSY) { |
| 534 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams"); | |
| 535 } | |
| 536 | |
| 537 if (rc == NGX_BUSY || rc == NGX_DECLINED) { | |
| 479 | 538 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
| 539 return; | |
| 540 } | |
| 541 | |
| 577 | 542 /* rc == NGX_OK || rc == NGX_AGAIN */ |
| 543 | |
| 479 | 544 c = u->peer.connection; |
| 545 | |
| 546 c->data = r; | |
| 591 | 547 |
| 509 | 548 c->write->handler = ngx_http_upstream_send_request_handler; |
| 549 c->read->handler = ngx_http_upstream_process_header; | |
| 479 | 550 |
| 551 c->sendfile = r->connection->sendfile; | |
| 552 | |
| 553 c->pool = r->pool; | |
| 554 c->read->log = c->write->log = c->log = r->connection->log; | |
| 555 | |
| 556 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */ | |
| 557 | |
| 558 u->writer.out = NULL; | |
| 559 u->writer.last = &u->writer.out; | |
| 560 u->writer.connection = c; | |
| 561 u->writer.limit = 0; | |
| 562 | |
| 563 if (u->request_sent) { | |
| 509 | 564 if (ngx_http_upstream_reinit(r, u) != NGX_OK) { |
| 565 ngx_http_upstream_finalize_request(r, u, | |
| 566 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 567 return; | |
| 568 } | |
| 479 | 569 } |
| 570 | |
| 597 | 571 if (r->request_body && r->request_body->temp_file && r == r->main) { |
| 573 | 572 |
| 573 /* | |
| 574 * the r->request_body->buf can be reused for one request only, | |
| 575 * the subrequests should allocate their own temporay bufs | |
| 576 */ | |
| 577 | |
| 578 u->output.free = ngx_alloc_chain_link(r->pool); | |
| 579 if (u->output.free == NULL) { | |
| 580 ngx_http_upstream_finalize_request(r, u, | |
| 581 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 582 return; | |
| 479 | 583 } |
| 573 | 584 |
| 585 u->output.free->buf = r->request_body->buf; | |
| 586 u->output.free->next = NULL; | |
| 587 u->output.allocated = 1; | |
| 588 | |
| 589 r->request_body->buf->pos = r->request_body->buf->start; | |
| 590 r->request_body->buf->last = r->request_body->buf->start; | |
| 591 r->request_body->buf->tag = u->output.tag; | |
| 479 | 592 } |
| 593 | |
| 594 u->request_sent = 0; | |
| 595 | |
| 596 if (rc == NGX_AGAIN) { | |
| 597 ngx_add_timer(c->write, u->conf->connect_timeout); | |
| 598 return; | |
| 599 } | |
| 600 | |
| 577 | 601 #if (NGX_HTTP_SSL) |
| 602 | |
| 591 | 603 if (u->conf->ssl && c->ssl == NULL) { |
| 604 ngx_http_upstream_ssl_init_connection(r, u, c); | |
| 577 | 605 return; |
| 606 } | |
| 607 | |
| 608 #endif | |
| 609 | |
| 479 | 610 ngx_http_upstream_send_request(r, u); |
| 611 } | |
| 612 | |
| 613 | |
| 577 | 614 #if (NGX_HTTP_SSL) |
| 615 | |
| 616 static void | |
| 591 | 617 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r, |
| 618 ngx_http_upstream_t *u, ngx_connection_t *c) | |
| 619 { | |
| 620 ngx_int_t rc; | |
| 621 ngx_peer_t *peer; | |
| 622 | |
| 623 if (ngx_ssl_create_connection(u->conf->ssl, c, | |
| 624 NGX_SSL_BUFFER|NGX_SSL_CLIENT) | |
| 625 == NGX_ERROR) | |
| 626 { | |
| 627 ngx_http_upstream_finalize_request(r, u, | |
| 628 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 629 return; | |
| 630 } | |
| 631 | |
| 632 c->sendfile = 0; | |
| 619 | 633 u->output.sendfile = 0; |
| 591 | 634 |
| 635 peer = &u->peer.peers->peer[u->peer.cur_peer]; | |
| 636 | |
| 637 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) { | |
| 638 ngx_http_upstream_finalize_request(r, u, | |
| 639 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 640 return; | |
| 641 } | |
| 642 | |
| 641 | 643 r->connection->log->action = "SSL handshaking to upstream"; |
| 644 | |
| 591 | 645 rc = ngx_ssl_handshake(c); |
| 646 | |
| 647 if (rc == NGX_AGAIN) { | |
| 648 c->ssl->handler = ngx_http_upstream_ssl_handshake; | |
| 649 return; | |
| 650 } | |
| 651 | |
| 652 ngx_http_upstream_ssl_handshake(c); | |
| 653 } | |
| 654 | |
| 655 | |
| 656 static void | |
| 577 | 657 ngx_http_upstream_ssl_handshake(ngx_connection_t *c) |
| 658 { | |
| 659 ngx_http_request_t *r; | |
| 660 ngx_http_upstream_t *u; | |
| 661 | |
| 662 r = c->data; | |
| 663 u = r->upstream; | |
| 664 | |
| 665 if (c->ssl->handshaked) { | |
| 666 | |
| 667 c->write->handler = ngx_http_upstream_send_request_handler; | |
| 668 c->read->handler = ngx_http_upstream_process_header; | |
| 669 | |
| 670 ngx_http_upstream_send_request(r, u); | |
| 671 | |
| 672 return; | |
| 673 } | |
| 674 | |
| 675 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 676 | |
| 677 } | |
| 678 | |
| 679 #endif | |
| 680 | |
| 681 | |
| 509 | 682 static ngx_int_t |
| 487 | 683 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u) |
| 479 | 684 { |
| 685 ngx_chain_t *cl; | |
| 686 | |
| 509 | 687 if (u->reinit_request(r) != NGX_OK) { |
| 688 return NGX_ERROR; | |
| 689 } | |
| 690 | |
| 691 ngx_memzero(&r->upstream->headers_in, | |
| 692 sizeof(ngx_http_upstream_headers_in_t)); | |
| 693 | |
| 694 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, | |
| 591 | 695 sizeof(ngx_table_elt_t)) |
| 696 != NGX_OK) | |
| 509 | 697 { |
| 698 return NGX_ERROR; | |
| 479 | 699 } |
| 700 | |
| 701 /* reinit the request chain */ | |
| 577 | 702 |
| 509 | 703 for (cl = u->request_bufs; cl; cl = cl->next) { |
| 479 | 704 cl->buf->pos = cl->buf->start; |
| 705 cl->buf->file_pos = 0; | |
| 706 } | |
| 707 | |
| 509 | 708 /* reinit the subrequest's ngx_output_chain() context */ |
| 709 | |
| 573 | 710 if (r->request_body && r->request_body->temp_file |
| 597 | 711 && r != r->main && u->output.buf) |
| 573 | 712 { |
| 713 u->output.free = ngx_alloc_chain_link(r->pool); | |
| 714 if (u->output.free == NULL) { | |
| 715 return NGX_ERROR; | |
| 509 | 716 } |
| 573 | 717 |
| 718 u->output.free->buf = u->output.buf; | |
| 719 u->output.free->next = NULL; | |
| 720 | |
| 721 u->output.buf->pos = u->output.buf->start; | |
| 722 u->output.buf->last = u->output.buf->start; | |
| 509 | 723 } |
| 479 | 724 |
| 725 u->output.buf = NULL; | |
| 726 u->output.in = NULL; | |
| 727 u->output.busy = NULL; | |
| 577 | 728 |
| 581 | 729 /* reinit u->buffer */ |
| 577 | 730 |
| 479 | 731 #if 0 |
| 732 if (u->cache) { | |
| 581 | 733 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size; |
| 734 u->buffer.last = u->buffer.pos; | |
| 479 | 735 |
| 736 } else { | |
| 581 | 737 u->buffer.pos = u->buffer.start; |
| 738 u->buffer.last = u->buffer.start; | |
| 479 | 739 } |
| 740 #else | |
| 509 | 741 |
| 581 | 742 u->buffer.pos = u->buffer.start; |
| 743 u->buffer.last = u->buffer.start; | |
| 509 | 744 |
| 479 | 745 #endif |
| 746 | |
| 509 | 747 return NGX_OK; |
| 479 | 748 } |
| 749 | |
| 750 | |
| 487 | 751 static void |
| 752 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 479 | 753 { |
| 671 | 754 int rc, err; |
| 755 socklen_t len; | |
| 483 | 756 ngx_connection_t *c; |
| 577 | 757 |
| 479 | 758 c = u->peer.connection; |
| 759 | |
| 760 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 761 "http upstream send request"); | |
| 762 | |
| 671 | 763 if (!u->request_sent) { |
| 764 | |
| 479 | 765 #if (NGX_HAVE_KQUEUE) |
| 766 | |
| 671 | 767 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| 768 if (c->write->pending_eof) { | |
| 769 (void) ngx_connection_error(c, c->write->kq_errno, | |
| 537 | 770 "kevent() reported that connect() failed"); |
| 671 | 771 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
| 772 return; | |
| 773 } | |
| 774 | |
| 775 } else | |
| 776 #endif | |
| 777 { | |
| 778 err = 0; | |
| 779 len = sizeof(int); | |
| 780 | |
| 781 /* | |
| 782 * BSDs and Linux return 0 and set a pending error in err | |
| 783 * Solaris returns -1 and sets errno | |
| 784 */ | |
| 785 | |
| 786 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len) | |
| 787 == -1) | |
| 788 { | |
| 789 err = ngx_errno; | |
| 790 } | |
| 791 | |
| 792 if (err) { | |
| 793 (void) ngx_connection_error(c, err, "connect() failed"); | |
| 794 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 795 return; | |
| 796 } | |
| 797 } | |
| 479 | 798 } |
| 799 | |
| 483 | 800 c->log->action = "sending request to upstream"; |
| 479 | 801 |
| 509 | 802 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs); |
| 479 | 803 |
| 804 u->request_sent = 1; | |
| 805 | |
| 806 if (rc == NGX_ERROR) { | |
| 807 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 808 return; | |
| 809 } | |
| 810 | |
| 811 if (c->write->timer_set) { | |
| 812 ngx_del_timer(c->write); | |
| 813 } | |
| 814 | |
| 815 if (rc == NGX_AGAIN) { | |
| 816 ngx_add_timer(c->write, u->conf->send_timeout); | |
| 817 | |
| 818 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR) | |
| 819 { | |
| 820 ngx_http_upstream_finalize_request(r, u, | |
| 821 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 822 return; | |
| 823 } | |
| 824 | |
| 825 return; | |
| 826 } | |
| 827 | |
| 828 /* rc == NGX_OK */ | |
| 829 | |
| 830 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { | |
| 831 if (ngx_tcp_push(c->fd) == NGX_ERROR) { | |
| 832 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno, | |
| 833 ngx_tcp_push_n " failed"); | |
| 834 ngx_http_upstream_finalize_request(r, u, | |
| 835 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 577 | 836 return; |
| 479 | 837 } |
| 838 | |
| 839 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; | |
| 840 } | |
| 577 | 841 |
| 479 | 842 ngx_add_timer(c->read, u->conf->read_timeout); |
| 843 | |
| 844 #if 1 | |
| 845 if (c->read->ready) { | |
| 577 | 846 |
| 479 | 847 /* post aio operation */ |
| 848 | |
| 849 /* | |
| 850 * TODO comment | |
| 851 * although we can post aio operation just in the end | |
| 852 * of ngx_http_upstream_connect() CHECK IT !!! | |
| 853 * it's better to do here because we postpone header buffer allocation | |
| 854 */ | |
| 855 | |
| 856 ngx_http_upstream_process_header(c->read); | |
| 857 return; | |
| 858 } | |
| 859 #endif | |
| 860 | |
| 509 | 861 c->write->handler = ngx_http_upstream_dummy_handler; |
| 479 | 862 |
| 509 | 863 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) { |
| 479 | 864 ngx_http_upstream_finalize_request(r, u, |
| 865 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 866 return; | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 | |
| 487 | 871 static void |
| 872 ngx_http_upstream_send_request_handler(ngx_event_t *wev) | |
| 479 | 873 { |
| 874 ngx_connection_t *c; | |
| 875 ngx_http_request_t *r; | |
| 876 ngx_http_upstream_t *u; | |
| 877 | |
| 878 c = wev->data; | |
| 879 r = c->data; | |
| 880 u = r->upstream; | |
| 881 | |
| 882 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
| 883 "http upstream send request handler"); | |
| 884 | |
| 885 if (wev->timedout) { | |
| 886 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
| 887 return; | |
| 888 } | |
| 889 | |
| 591 | 890 #if (NGX_HTTP_SSL) |
| 891 | |
| 892 if (u->conf->ssl && c->ssl == NULL) { | |
| 893 ngx_http_upstream_ssl_init_connection(r, u, c); | |
| 894 return; | |
| 895 } | |
| 896 | |
| 897 #endif | |
| 898 | |
| 651 | 899 if (u->header_sent) { |
| 900 wev->handler = ngx_http_upstream_dummy_handler; | |
| 901 | |
| 902 (void) ngx_handle_write_event(wev, 0); | |
| 903 | |
| 904 return; | |
| 905 } | |
| 906 | |
| 479 | 907 ngx_http_upstream_send_request(r, u); |
| 908 } | |
| 909 | |
| 910 | |
| 487 | 911 static void |
| 912 ngx_http_upstream_process_header(ngx_event_t *rev) | |
| 479 | 913 { |
| 515 | 914 ssize_t n; |
| 915 ngx_int_t rc; | |
| 573 | 916 ngx_str_t *uri, args; |
| 649 | 917 ngx_uint_t i, flags; |
| 515 | 918 ngx_list_part_t *part; |
| 919 ngx_table_elt_t *h; | |
| 920 ngx_connection_t *c; | |
| 921 ngx_http_request_t *r; | |
| 922 ngx_http_upstream_t *u; | |
| 923 ngx_http_err_page_t *err_page; | |
| 924 ngx_http_core_loc_conf_t *clcf; | |
| 925 ngx_http_upstream_header_t *hh; | |
| 926 ngx_http_upstream_main_conf_t *umcf; | |
| 479 | 927 |
| 928 c = rev->data; | |
| 929 r = c->data; | |
| 930 u = r->upstream; | |
| 931 | |
| 932 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, | |
| 483 | 933 "http upstream process header"); |
| 479 | 934 |
| 483 | 935 c->log->action = "reading response header from upstream"; |
| 479 | 936 |
| 937 if (rev->timedout) { | |
| 938 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
| 939 return; | |
| 940 } | |
| 577 | 941 |
| 581 | 942 if (u->buffer.start == NULL) { |
| 943 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size); | |
| 944 if (u->buffer.start == NULL) { | |
| 479 | 945 ngx_http_upstream_finalize_request(r, u, |
| 946 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 947 return; | |
| 948 } | |
| 949 | |
| 581 | 950 u->buffer.pos = u->buffer.start; |
| 951 u->buffer.last = u->buffer.start; | |
| 952 u->buffer.end = u->buffer.start + u->conf->buffer_size; | |
| 953 u->buffer.temporary = 1; | |
| 954 | |
| 955 u->buffer.tag = u->output.tag; | |
| 479 | 956 |
| 509 | 957 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, |
| 581 | 958 sizeof(ngx_table_elt_t)) |
| 959 != NGX_OK) | |
| 509 | 960 { |
| 961 ngx_http_upstream_finalize_request(r, u, | |
| 962 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 963 return; | |
| 964 } | |
| 965 | |
| 479 | 966 #if 0 |
| 967 if (u->cache) { | |
| 581 | 968 u->buffer.pos += u->cache->ctx.header_size; |
| 969 u->buffer.last = u->buffer.pos; | |
| 479 | 970 } |
| 971 #endif | |
| 972 } | |
| 973 | |
| 581 | 974 n = u->peer.connection->recv(u->peer.connection, u->buffer.last, |
| 975 u->buffer.end - u->buffer.last); | |
| 479 | 976 |
| 977 if (n == NGX_AGAIN) { | |
| 978 #if 0 | |
| 979 ngx_add_timer(rev, u->read_timeout); | |
| 980 #endif | |
| 981 | |
| 982 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 983 ngx_http_upstream_finalize_request(r, u, | |
| 984 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 985 return; | |
| 986 } | |
| 987 | |
| 988 return; | |
| 989 } | |
| 990 | |
| 991 if (n == 0) { | |
| 992 ngx_log_error(NGX_LOG_ERR, rev->log, 0, | |
| 993 "upstream prematurely closed connection"); | |
| 994 } | |
| 995 | |
| 996 if (n == NGX_ERROR || n == 0) { | |
| 997 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 998 return; | |
| 999 } | |
| 1000 | |
| 581 | 1001 u->buffer.last += n; |
| 479 | 1002 |
| 1003 #if 0 | |
| 1004 u->valid_header_in = 0; | |
| 1005 | |
| 1006 u->peer.cached = 0; | |
| 1007 #endif | |
| 1008 | |
| 1009 rc = u->process_header(r); | |
| 1010 | |
| 1011 if (rc == NGX_AGAIN) { | |
| 1012 #if 0 | |
| 1013 ngx_add_timer(rev, u->read_timeout); | |
| 1014 #endif | |
| 1015 | |
| 581 | 1016 if (u->buffer.pos == u->buffer.end) { |
| 479 | 1017 ngx_log_error(NGX_LOG_ERR, rev->log, 0, |
| 1018 "upstream sent too big header"); | |
| 1019 | |
| 1020 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
| 1021 return; | |
| 1022 } | |
| 1023 | |
| 1024 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 1025 ngx_http_upstream_finalize_request(r, u, | |
| 1026 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1027 return; | |
| 1028 } | |
| 1029 | |
| 1030 return; | |
| 1031 } | |
| 1032 | |
| 1033 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) { | |
| 1034 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
| 1035 return; | |
| 1036 } | |
| 1037 | |
| 1038 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { | |
| 1039 ngx_http_upstream_finalize_request(r, u, | |
| 1040 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1041 return; | |
| 1042 } | |
| 1043 | |
| 1044 /* rc == NGX_OK */ | |
| 1045 | |
|
777
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diff
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|
1046 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
|
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|
1047 && r->subrequest_in_memory) |
|
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parents:
757
diff
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|
1048 { |
|
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757
diff
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|
1049 u->buffer.last = u->buffer.pos; |
|
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diff
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|
1050 } |
|
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diff
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|
1051 |
| 529 | 1052 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) { |
| 509 | 1053 |
| 1054 if (u->peer.tries > 1 | |
| 1055 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
| 1056 { | |
| 1057 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500); | |
| 1058 return; | |
| 1059 } | |
| 1060 | |
| 1061 #if (NGX_HTTP_CACHE) | |
| 1062 | |
| 1063 if (u->peer.tries == 0 | |
| 1064 && u->stale | |
| 1065 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
| 1066 { | |
| 1067 ngx_http_upstream_finalize_request(r, u, | |
| 529 | 1068 ngx_http_send_cached_response(r)); |
| 509 | 1069 return; |
| 1070 } | |
| 1071 | |
| 1072 #endif | |
| 1073 } | |
| 1074 | |
| 597 | 1075 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) { |
| 1076 | |
| 1077 if (u->peer.tries > 1 | |
| 1078 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404) | |
| 1079 { | |
| 1080 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404); | |
| 1081 return; | |
| 1082 } | |
| 1083 | |
| 675 | 1084 if (u->conf->intercept_404) { |
| 1085 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND); | |
| 597 | 1086 return; |
| 1087 } | |
| 509 | 1088 } |
| 1089 | |
| 1090 | |
| 529 | 1091 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
| 675 | 1092 && u->conf->intercept_errors) |
| 487 | 1093 { |
| 1094 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 1095 | |
| 1096 if (clcf->error_pages) { | |
| 1097 | |
| 1098 err_page = clcf->error_pages->elts; | |
| 1099 for (i = 0; i < clcf->error_pages->nelts; i++) { | |
| 529 | 1100 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) { |
| 1101 | |
| 1102 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) { | |
| 1103 | |
| 1104 r->headers_out.www_authenticate = | |
| 1105 ngx_list_push(&r->headers_out.headers); | |
| 1106 | |
| 1107 if (r->headers_out.www_authenticate == NULL) { | |
| 1108 ngx_http_upstream_finalize_request(r, u, | |
| 1109 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1110 return; | |
| 1111 } | |
| 1112 | |
| 577 | 1113 *r->headers_out.www_authenticate = |
| 529 | 1114 *u->headers_in.www_authenticate; |
| 1115 } | |
| 1116 | |
| 487 | 1117 ngx_http_upstream_finalize_request(r, u, |
| 529 | 1118 u->headers_in.status_n); |
| 487 | 1119 return; |
| 1120 } | |
| 1121 } | |
| 1122 } | |
| 1123 } | |
| 1124 | |
| 681 | 1125 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); |
| 1126 | |
| 515 | 1127 if (r->upstream->headers_in.x_accel_redirect) { |
|
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756
diff
changeset
|
1128 |
| 515 | 1129 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED); |
| 1130 | |
| 1131 part = &r->upstream->headers_in.headers.part; | |
| 1132 h = part->elts; | |
| 1133 | |
| 1134 for (i = 0; /* void */; i++) { | |
| 1135 | |
| 1136 if (i >= part->nelts) { | |
| 1137 if (part->next == NULL) { | |
| 1138 break; | |
| 1139 } | |
| 577 | 1140 |
| 515 | 1141 part = part->next; |
| 1142 h = part->elts; | |
| 1143 i = 0; | |
| 1144 } | |
| 1145 | |
| 649 | 1146 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, |
| 1147 h[i].lowcase_key, h[i].key.len); | |
| 1148 | |
| 1149 if (hh && hh->redirect) { | |
| 1150 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
|
787
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777
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|
1151 ngx_http_finalize_request(r, |
|
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756
diff
changeset
|
1152 NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 515 | 1153 return; |
| 1154 } | |
| 1155 } | |
| 1156 } | |
| 1157 | |
| 573 | 1158 uri = &r->upstream->headers_in.x_accel_redirect->value; |
| 1159 args.len = 0; | |
| 1160 args.data = NULL; | |
| 1161 flags = 0; | |
| 1162 | |
| 1163 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) { | |
|
757
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parents:
756
diff
changeset
|
1164 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); |
| 573 | 1165 return; |
| 1166 } | |
| 1167 | |
| 1168 if (flags & NGX_HTTP_ZERO_IN_URI) { | |
| 1169 r->zero_in_uri = 1; | |
| 1170 } | |
| 1171 | |
| 653 | 1172 if (r->method != NGX_HTTP_HEAD) { |
| 1173 r->method = NGX_HTTP_GET; | |
| 1174 } | |
| 1175 | |
| 573 | 1176 ngx_http_internal_redirect(r, uri, &args); |
| 515 | 1177 return; |
| 1178 } | |
| 1179 | |
| 509 | 1180 part = &r->upstream->headers_in.headers.part; |
| 1181 h = part->elts; | |
| 1182 | |
| 1183 for (i = 0; /* void */; i++) { | |
| 479 | 1184 |
| 509 | 1185 if (i >= part->nelts) { |
| 1186 if (part->next == NULL) { | |
| 1187 break; | |
| 1188 } | |
| 577 | 1189 |
| 509 | 1190 part = part->next; |
| 1191 h = part->elts; | |
| 1192 i = 0; | |
| 1193 } | |
| 1194 | |
| 649 | 1195 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash, |
| 1196 h[i].lowcase_key, h[i].key.len)) | |
| 509 | 1197 { |
| 649 | 1198 continue; |
| 1199 } | |
| 1200 | |
| 1201 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, | |
| 1202 h[i].lowcase_key, h[i].key.len); | |
| 1203 | |
| 1204 if (hh) { | |
| 1205 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
| 509 | 1206 ngx_http_upstream_finalize_request(r, u, |
| 1207 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1208 return; | |
| 1209 } | |
| 1210 | |
| 1211 continue; | |
| 1212 } | |
| 1213 | |
| 1214 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) { | |
| 1215 ngx_http_upstream_finalize_request(r, u, | |
| 1216 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1217 return; | |
| 1218 } | |
| 1219 } | |
| 1220 | |
| 649 | 1221 if (r->headers_out.server && r->headers_out.server->value.data == NULL) { |
| 1222 r->headers_out.server->hash = 0; | |
| 1223 } | |
| 1224 | |
| 1225 if (r->headers_out.date && r->headers_out.date->value.data == NULL) { | |
| 1226 r->headers_out.date->hash = 0; | |
| 1227 } | |
| 1228 | |
| 529 | 1229 r->headers_out.status = u->headers_in.status_n; |
| 1230 r->headers_out.status_line = u->headers_in.status_line; | |
| 1231 | |
| 581 | 1232 if (r->headers_out.content_length_n != -1) { |
| 1233 u->length = (size_t) r->headers_out.content_length_n; | |
| 1234 | |
| 1235 } else { | |
| 1236 u->length = NGX_MAX_SIZE_T_VALUE; | |
| 1237 } | |
| 1238 | |
|
777
4ab852b691f5
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diff
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|
1239 if (!r->subrequest_in_memory) { |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1240 ngx_http_upstream_send_response(r, u); |
|
4ab852b691f5
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parents:
757
diff
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|
1241 return; |
|
4ab852b691f5
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parents:
757
diff
changeset
|
1242 } |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1243 |
|
4ab852b691f5
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parents:
757
diff
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|
1244 /* subrequest content in memory */ |
|
4ab852b691f5
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parents:
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diff
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|
1245 |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1246 if (u->input_filter == NULL) { |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1247 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1248 u->input_filter = ngx_http_upstream_non_buffered_filter; |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1249 u->input_filter_ctx = r; |
|
4ab852b691f5
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parents:
757
diff
changeset
|
1250 } |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1251 |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1252 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1253 ngx_http_upstream_finalize_request(r, u, |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1254 NGX_HTTP_INTERNAL_SERVER_ERROR); |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1255 return; |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1256 } |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1257 |
|
4ab852b691f5
<!--#include virtual=... set=... -->
Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1258 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) { |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1259 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) { |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1260 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1261 return; |
|
4ab852b691f5
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parents:
757
diff
changeset
|
1262 } |
|
4ab852b691f5
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parents:
757
diff
changeset
|
1263 |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1264 ngx_http_upstream_finalize_request(r, u, 0); |
|
4ab852b691f5
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parents:
757
diff
changeset
|
1265 return; |
|
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parents:
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diff
changeset
|
1266 } |
|
4ab852b691f5
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parents:
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diff
changeset
|
1267 |
|
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diff
changeset
|
1268 rev->handler = ngx_http_upstream_process_body_in_memory; |
|
4ab852b691f5
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parents:
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diff
changeset
|
1269 |
|
4ab852b691f5
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parents:
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diff
changeset
|
1270 ngx_http_upstream_process_body_in_memory(rev); |
|
4ab852b691f5
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diff
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|
1271 } |
|
4ab852b691f5
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parents:
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diff
changeset
|
1272 |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
1273 |
|
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diff
changeset
|
1274 static void |
|
4ab852b691f5
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diff
changeset
|
1275 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev) |
|
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diff
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|
1276 { |
|
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diff
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|
1277 size_t size; |
|
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diff
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|
1278 ssize_t n; |
|
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|
1279 ngx_buf_t *b; |
|
4ab852b691f5
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diff
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|
1280 ngx_connection_t *c; |
|
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diff
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|
1281 ngx_http_request_t *r; |
|
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diff
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|
1282 ngx_http_upstream_t *u; |
|
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parents:
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diff
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|
1283 |
|
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parents:
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diff
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|
1284 c = rev->data; |
|
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diff
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|
1285 r = c->data; |
|
4ab852b691f5
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diff
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|
1286 u = r->upstream; |
|
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diff
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|
1287 |
|
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parents:
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diff
changeset
|
1288 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
|
4ab852b691f5
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diff
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|
1289 "http upstream process body on memory"); |
|
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diff
changeset
|
1290 |
|
4ab852b691f5
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diff
changeset
|
1291 if (rev->timedout) { |
|
4ab852b691f5
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parents:
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diff
changeset
|
1292 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
|
4ab852b691f5
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diff
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|
1293 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT); |
|
4ab852b691f5
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parents:
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diff
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|
1294 return; |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
parents:
757
diff
changeset
|
1295 } |
|
4ab852b691f5
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parents:
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diff
changeset
|
1296 |
|
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parents:
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diff
changeset
|
1297 b = &u->buffer; |
|
4ab852b691f5
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Igor Sysoev <igor@sysoev.ru>
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1298 |
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1299 for ( ;; ) { |
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1300 |
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1301 size = b->end - b->last; |
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1302 |
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1303 if (size == 0) { |
|
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1304 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
|
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1305 "upstream buffer is too small to read repsonse"); |
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1306 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1307 return; |
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1308 } |
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1309 |
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1310 n = c->recv(c, b->last, size); |
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1311 |
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1312 if (n == NGX_AGAIN) { |
|
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1313 break; |
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1314 } |
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1315 |
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1316 if (n == 0 || n == NGX_ERROR) { |
|
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1317 ngx_http_upstream_finalize_request(r, u, n); |
|
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1318 return; |
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1319 } |
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1320 |
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1321 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { |
|
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1322 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1323 return; |
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1324 } |
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1325 |
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1326 if (!rev->ready) { |
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1327 break; |
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1328 } |
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1329 } |
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1330 |
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1331 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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1332 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1333 return; |
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1334 } |
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1335 |
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1336 if (rev->active) { |
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1337 ngx_add_timer(rev, u->conf->read_timeout); |
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1338 |
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1339 } else if (rev->timer_set) { |
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1340 ngx_del_timer(rev); |
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1341 } |
| 681 | 1342 } |
| 1343 | |
| 1344 | |
| 1345 static void | |
| 1346 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 1347 { | |
| 1348 int tcp_nodelay; | |
| 1349 ssize_t size; | |
| 1350 ngx_int_t rc; | |
| 1351 ngx_event_pipe_t *p; | |
| 1352 ngx_connection_t *c; | |
| 1353 ngx_pool_cleanup_t *cl; | |
| 1354 ngx_pool_cleanup_file_t *clf; | |
| 1355 ngx_http_core_loc_conf_t *clcf; | |
| 1356 | |
| 509 | 1357 rc = ngx_http_send_header(r); |
| 479 | 1358 |
| 629 | 1359 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) { |
| 485 | 1360 ngx_http_upstream_finalize_request(r, u, rc); |
| 479 | 1361 return; |
| 1362 } | |
| 1363 | |
| 1364 u->header_sent = 1; | |
| 1365 | |
| 573 | 1366 if (r->request_body && r->request_body->temp_file) { |
| 563 | 1367 for (cl = r->pool->cleanup; cl; cl = cl->next) { |
| 1368 if (cl->handler == ngx_pool_cleanup_file) { | |
| 1369 clf = cl->data; | |
| 1370 | |
| 1371 if (clf->fd == r->request_body->temp_file->file.fd) { | |
| 1372 cl->handler(clf); | |
| 1373 cl->handler = NULL; | |
| 659 | 1374 r->request_body->temp_file->file.fd = NGX_INVALID_FILE; |
| 563 | 1375 break; |
| 1376 } | |
| 1377 } | |
| 1378 } | |
| 1379 } | |
| 1380 | |
| 583 | 1381 c = r->connection; |
| 1382 | |
| 581 | 1383 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| 1384 | |
| 649 | 1385 if (!u->buffering) { |
| 581 | 1386 |
| 1387 if (u->input_filter == NULL) { | |
| 1388 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; | |
| 1389 u->input_filter = ngx_http_upstream_non_buffered_filter; | |
| 1390 u->input_filter_ctx = r; | |
| 1391 } | |
| 1392 | |
| 1393 u->peer.connection->read->handler = | |
| 1394 ngx_http_upstream_process_non_buffered_body; | |
| 1395 r->write_event_handler = | |
| 1396 ngx_http_upstream_process_non_buffered_downstream; | |
| 1397 | |
| 1398 r->limit_rate = 0; | |
| 1399 | |
| 1400 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { | |
| 1401 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1402 return; | |
| 1403 } | |
| 1404 | |
| 583 | 1405 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) { |
| 1406 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); | |
| 1407 | |
| 1408 tcp_nodelay = 1; | |
| 1409 | |
| 1410 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, | |
| 1411 (const void *) &tcp_nodelay, sizeof(int)) == -1) | |
| 1412 { | |
| 1413 ngx_connection_error(c, ngx_socket_errno, | |
| 1414 "setsockopt(TCP_NODELAY) failed"); | |
| 1415 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1416 return; | |
| 1417 } | |
| 1418 | |
| 1419 c->tcp_nodelay = NGX_TCP_NODELAY_SET; | |
| 1420 } | |
| 1421 | |
| 581 | 1422 size = u->buffer.last - u->buffer.pos; |
| 1423 | |
| 1424 if (size) { | |
| 1425 u->buffer.last = u->buffer.pos; | |
| 1426 | |
| 1427 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) { | |
| 1428 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1429 return; | |
| 1430 } | |
| 1431 | |
| 583 | 1432 ngx_http_upstream_process_non_buffered_body(c->write); |
| 581 | 1433 |
| 1434 } else { | |
| 1435 u->buffer.pos = u->buffer.start; | |
| 1436 u->buffer.last = u->buffer.start; | |
| 1437 | |
| 1438 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) { | |
| 1439 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1440 return; | |
| 1441 } | |
| 1442 } | |
| 1443 | |
| 1444 return; | |
| 1445 } | |
| 1446 | |
| 479 | 1447 /* TODO: preallocate event_pipe bufs, look "Content-Length" */ |
| 1448 | |
| 1449 #if 0 | |
| 1450 | |
| 1451 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) { | |
| 1452 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) { | |
| 583 | 1453 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
| 479 | 1454 ngx_close_file_n " \"%s\" failed", |
| 1455 u->cache->ctx.file.name.data); | |
| 1456 } | |
| 1457 } | |
| 1458 | |
| 1459 if (u->cachable) { | |
| 581 | 1460 header = (ngx_http_cache_header_t *) u->buffer->start; |
| 479 | 1461 |
| 1462 header->expires = u->cache->ctx.expires; | |
| 1463 header->last_modified = u->cache->ctx.last_modified; | |
| 1464 header->date = u->cache->ctx.date; | |
| 1465 header->length = r->headers_out.content_length_n; | |
| 1466 u->cache->ctx.length = r->headers_out.content_length_n; | |
| 1467 | |
| 1468 header->key_len = u->cache->ctx.key0.len; | |
| 1469 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len); | |
| 1470 header->key[header->key_len] = LF; | |
| 1471 } | |
| 1472 | |
| 1473 #endif | |
| 1474 | |
| 581 | 1475 p = u->pipe; |
| 479 | 1476 |
| 1477 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter; | |
| 1478 p->output_ctx = r; | |
| 1479 p->tag = u->output.tag; | |
| 577 | 1480 p->bufs = u->conf->bufs; |
| 479 | 1481 p->busy_size = u->conf->busy_buffers_size; |
| 1482 p->upstream = u->peer.connection; | |
| 583 | 1483 p->downstream = c; |
| 479 | 1484 p->pool = r->pool; |
| 583 | 1485 p->log = c->log; |
| 577 | 1486 |
| 479 | 1487 p->cachable = u->cachable; |
| 1488 | |
| 501 | 1489 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
| 1490 if (p->temp_file == NULL) { | |
| 479 | 1491 ngx_http_upstream_finalize_request(r, u, 0); |
| 1492 return; | |
| 1493 } | |
| 1494 | |
| 1495 p->temp_file->file.fd = NGX_INVALID_FILE; | |
| 583 | 1496 p->temp_file->file.log = c->log; |
| 479 | 1497 p->temp_file->path = u->conf->temp_path; |
| 1498 p->temp_file->pool = r->pool; | |
| 577 | 1499 |
| 479 | 1500 if (u->cachable) { |
| 1501 p->temp_file->persistent = 1; | |
| 1502 } else { | |
| 667 | 1503 p->temp_file->log_level = NGX_LOG_WARN; |
| 479 | 1504 p->temp_file->warn = "an upstream response is buffered " |
| 1505 "to a temporary file"; | |
| 1506 } | |
| 1507 | |
| 1508 p->max_temp_file_size = u->conf->max_temp_file_size; | |
| 1509 p->temp_file_write_size = u->conf->temp_file_write_size; | |
| 1510 | |
| 501 | 1511 p->preread_bufs = ngx_alloc_chain_link(r->pool); |
| 1512 if (p->preread_bufs == NULL) { | |
| 479 | 1513 ngx_http_upstream_finalize_request(r, u, 0); |
| 1514 return; | |
| 1515 } | |
| 581 | 1516 p->preread_bufs->buf = &u->buffer; |
| 479 | 1517 p->preread_bufs->next = NULL; |
| 581 | 1518 u->buffer.recycled = 1; |
| 1519 | |
| 1520 p->preread_size = u->buffer.last - u->buffer.pos; | |
| 479 | 1521 |
| 1522 if (u->cachable) { | |
| 1523 p->buf_to_file = ngx_calloc_buf(r->pool); | |
| 1524 if (p->buf_to_file == NULL) { | |
| 1525 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1526 return; | |
| 1527 } | |
| 581 | 1528 p->buf_to_file->pos = u->buffer.start; |
| 1529 p->buf_to_file->last = u->buffer.pos; | |
| 479 | 1530 p->buf_to_file->temporary = 1; |
| 1531 } | |
| 1532 | |
| 1533 if (ngx_event_flags & NGX_USE_AIO_EVENT) { | |
| 1534 /* the posted aio operation may currupt a shadow buffer */ | |
| 1535 p->single_buf = 1; | |
| 1536 } | |
| 1537 | |
| 1538 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */ | |
| 1539 p->free_bufs = 1; | |
| 1540 | |
| 1541 /* | |
| 581 | 1542 * event_pipe would do u->buffer.last += p->preread_size |
| 479 | 1543 * as though these bytes were read |
| 1544 */ | |
| 581 | 1545 u->buffer.last = u->buffer.pos; |
| 479 | 1546 |
| 1547 if (u->conf->cyclic_temp_file) { | |
| 1548 | |
| 1549 /* | |
| 1550 * we need to disable the use of sendfile() if we use cyclic temp file | |
| 1551 * because the writing a new data may interfere with sendfile() | |
| 1552 * that uses the same kernel file pages (at least on FreeBSD) | |
| 1553 */ | |
| 1554 | |
| 1555 p->cyclic_temp_file = 1; | |
| 583 | 1556 c->sendfile = 0; |
| 479 | 1557 |
| 1558 } else { | |
| 1559 p->cyclic_temp_file = 0; | |
| 1560 } | |
| 1561 | |
| 1562 p->read_timeout = u->conf->read_timeout; | |
| 1563 p->send_timeout = clcf->send_timeout; | |
| 1564 p->send_lowat = clcf->send_lowat; | |
| 1565 | |
| 509 | 1566 u->peer.connection->read->handler = ngx_http_upstream_process_body; |
| 1567 r->write_event_handler = ngx_http_upstream_process_downstream; | |
| 479 | 1568 |
| 1569 ngx_http_upstream_process_body(u->peer.connection->read); | |
| 1570 } | |
| 1571 | |
| 1572 | |
| 487 | 1573 static void |
| 581 | 1574 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r) |
| 1575 { | |
| 1576 ngx_http_upstream_process_non_buffered_body(r->connection->write); | |
| 1577 } | |
| 1578 | |
| 1579 | |
| 1580 static void | |
| 1581 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev) | |
| 1582 { | |
| 1583 size_t size; | |
| 1584 ssize_t n; | |
| 1585 ngx_buf_t *b; | |
| 583 | 1586 ngx_int_t rc; |
| 581 | 1587 ngx_uint_t do_write; |
| 583 | 1588 ngx_connection_t *c, *client; |
| 581 | 1589 ngx_http_request_t *r; |
| 1590 ngx_http_upstream_t *u; | |
| 1591 ngx_http_core_loc_conf_t *clcf; | |
| 1592 | |
| 1593 c = ev->data; | |
|
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1594 r = c->data; |
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1595 u = r->upstream; |
| 581 | 1596 |
| 1597 if (ev->write) { | |
| 1598 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1599 "http upstream process non buffered downstream"); | |
| 1600 c->log->action = "sending to client"; | |
| 1601 | |
| 1602 } else { | |
| 1603 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1604 "http upstream process non buffered upstream"); | |
| 1605 c->log->action = "reading upstream"; | |
| 1606 } | |
| 1607 | |
| 1608 if (ev->timedout) { | |
| 1609 if (ev->write) { | |
| 1610 c->timedout = 1; | |
| 611 | 1611 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
| 1612 | |
| 581 | 1613 } else { |
| 611 | 1614 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
| 581 | 1615 } |
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1616 |
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1617 ngx_http_upstream_finalize_request(r, u, 0); |
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1618 return; |
| 581 | 1619 } |
| 1620 | |
| 583 | 1621 client = r->connection; |
| 581 | 1622 |
| 1623 b = &u->buffer; | |
| 1624 | |
| 1625 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 1626 | |
| 657 | 1627 do_write = ev->write || u->length == 0; |
| 581 | 1628 |
| 1629 for ( ;; ) { | |
| 1630 | |
| 1631 if (do_write) { | |
| 1632 | |
| 1633 if (u->out_bufs || u->busy_bufs) { | |
| 583 | 1634 rc = ngx_http_output_filter(r, u->out_bufs); |
| 1635 | |
| 1636 if (client->destroyed) { | |
| 1637 return; | |
| 1638 } | |
| 1639 | |
| 1640 if (rc == NGX_ERROR) { | |
| 581 | 1641 ngx_http_upstream_finalize_request(r, u, 0); |
| 1642 return; | |
| 1643 } | |
| 1644 | |
| 1645 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs, | |
| 1646 &u->out_bufs, u->output.tag); | |
| 1647 } | |
| 1648 | |
| 1649 if (u->busy_bufs == NULL) { | |
| 1650 | |
| 1651 if (u->length == 0 | |
| 1652 || u->peer.connection->read->eof | |
| 1653 || u->peer.connection->read->error) | |
| 1654 { | |
| 1655 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1656 return; | |
| 1657 } | |
| 1658 | |
| 1659 b->pos = b->start; | |
| 1660 b->last = b->start; | |
| 1661 } | |
| 1662 } | |
| 1663 | |
| 1664 size = b->end - b->last; | |
| 1665 | |
| 1666 if (size > u->length) { | |
| 1667 size = u->length; | |
| 1668 } | |
| 1669 | |
| 1670 if (size && u->peer.connection->read->ready) { | |
| 657 | 1671 |
| 581 | 1672 n = u->peer.connection->recv(u->peer.connection, b->last, size); |
| 1673 | |
| 1674 if (n == NGX_AGAIN) { | |
| 1675 break; | |
| 1676 } | |
| 1677 | |
| 1678 if (n > 0) { | |
| 1679 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { | |
| 1680 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1681 return; | |
| 1682 } | |
| 1683 } | |
| 1684 | |
| 1685 do_write = 1; | |
| 1686 | |
| 1687 continue; | |
| 1688 } | |
| 1689 | |
| 1690 break; | |
| 1691 } | |
| 1692 | |
| 583 | 1693 if (client->data == r) { |
| 1694 if (ngx_handle_write_event(client->write, clcf->send_lowat) | |
| 1695 == NGX_ERROR) | |
| 1696 { | |
| 1697 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1698 return; | |
| 1699 } | |
| 581 | 1700 } |
| 1701 | |
| 583 | 1702 if (client->write->active) { |
| 1703 ngx_add_timer(client->write, clcf->send_timeout); | |
| 1704 | |
| 1705 } else if (client->write->timer_set) { | |
| 1706 ngx_del_timer(client->write); | |
| 581 | 1707 } |
| 1708 | |
| 1709 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) { | |
| 1710 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1711 return; | |
| 1712 } | |
| 1713 | |
| 1714 if (u->peer.connection->read->active) { | |
| 1715 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout); | |
| 1716 | |
| 583 | 1717 } else if (u->peer.connection->read->timer_set) { |
| 1718 ngx_del_timer(u->peer.connection->read); | |
| 581 | 1719 } |
| 1720 } | |
| 1721 | |
| 1722 | |
| 1723 static ngx_int_t | |
| 1724 ngx_http_upstream_non_buffered_filter_init(void *data) | |
| 1725 { | |
| 1726 return NGX_OK; | |
| 1727 } | |
| 1728 | |
| 1729 | |
| 1730 static ngx_int_t | |
| 1731 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes) | |
| 1732 { | |
| 1733 ngx_http_request_t *r = data; | |
| 1734 | |
| 1735 ngx_buf_t *b; | |
| 1736 ngx_chain_t *cl, **ll; | |
| 1737 ngx_http_upstream_t *u; | |
| 1738 | |
| 1739 u = r->upstream; | |
| 1740 | |
| 1741 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 1742 ll = &cl->next; | |
| 1743 } | |
| 1744 | |
| 1745 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
| 1746 if (cl == NULL) { | |
| 1747 return NGX_ERROR; | |
| 1748 } | |
| 1749 | |
| 1750 *ll = cl; | |
| 1751 | |
| 1752 cl->buf->flush = 1; | |
| 1753 cl->buf->memory = 1; | |
| 1754 | |
| 1755 b = &u->buffer; | |
| 1756 | |
| 1757 cl->buf->pos = b->last; | |
| 1758 b->last += bytes; | |
| 1759 cl->buf->last = b->last; | |
| 1760 | |
| 1761 if (u->length == NGX_MAX_SIZE_T_VALUE) { | |
| 1762 return NGX_OK; | |
| 1763 } | |
| 1764 | |
| 1765 u->length -= bytes; | |
| 1766 | |
| 1767 return NGX_OK; | |
| 1768 } | |
| 1769 | |
| 1770 | |
| 1771 static void | |
| 509 | 1772 ngx_http_upstream_process_downstream(ngx_http_request_t *r) |
| 1773 { | |
| 1774 ngx_http_upstream_process_body(r->connection->write); | |
| 1775 } | |
| 1776 | |
| 1777 | |
| 1778 static void | |
| 487 | 1779 ngx_http_upstream_process_body(ngx_event_t *ev) |
| 479 | 1780 { |
| 509 | 1781 ngx_event_pipe_t *p; |
| 583 | 1782 ngx_connection_t *c, *downstream; |
| 479 | 1783 ngx_http_request_t *r; |
| 1784 ngx_http_upstream_t *u; | |
| 1785 | |
| 1786 c = ev->data; | |
| 1787 r = c->data; | |
| 1788 u = r->upstream; | |
| 583 | 1789 downstream = r->connection; |
| 479 | 1790 |
| 1791 if (ev->write) { | |
| 483 | 1792 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1793 "http upstream process downstream"); | |
| 1794 c->log->action = "sending to client"; | |
| 577 | 1795 |
| 479 | 1796 } else { |
| 483 | 1797 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1798 "http upstream process upstream"); | |
| 1799 c->log->action = "reading upstream"; | |
| 479 | 1800 } |
| 577 | 1801 |
| 581 | 1802 p = u->pipe; |
| 479 | 1803 |
| 1804 if (ev->timedout) { | |
| 1805 if (ev->write) { | |
| 527 | 1806 if (ev->delayed) { |
| 1807 | |
| 1808 ev->timedout = 0; | |
| 1809 ev->delayed = 0; | |
| 1810 | |
| 1811 if (!ev->ready) { | |
| 1812 ngx_add_timer(ev, p->send_timeout); | |
| 1813 | |
| 1814 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) | |
| 1815 { | |
| 1816 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1817 return; | |
| 1818 } | |
| 1819 | |
| 1820 return; | |
| 1821 } | |
| 1822 | |
| 1823 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { | |
| 583 | 1824 |
| 1825 if (downstream->destroyed) { | |
| 1826 return; | |
| 1827 } | |
| 1828 | |
| 527 | 1829 ngx_http_upstream_finalize_request(r, u, 0); |
| 1830 return; | |
| 1831 } | |
| 1832 | |
| 1833 } else { | |
| 1834 p->downstream_error = 1; | |
| 577 | 1835 c->timedout = 1; |
| 611 | 1836 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
| 527 | 1837 } |
| 479 | 1838 |
| 1839 } else { | |
| 577 | 1840 p->upstream_error = 1; |
| 611 | 1841 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
| 479 | 1842 } |
| 1843 | |
| 1844 } else { | |
| 527 | 1845 if (ev->write && ev->delayed) { |
| 1846 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1847 "http downstream delayed"); | |
| 1848 | |
| 1849 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) { | |
| 1850 return; | |
| 1851 } | |
| 1852 | |
| 1853 return; | |
| 1854 } | |
| 1855 | |
| 479 | 1856 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { |
| 583 | 1857 |
| 1858 if (downstream->destroyed) { | |
| 1859 return; | |
| 1860 } | |
| 1861 | |
| 479 | 1862 ngx_http_upstream_finalize_request(r, u, 0); |
| 1863 return; | |
| 1864 } | |
| 1865 } | |
| 577 | 1866 |
| 479 | 1867 if (u->peer.connection) { |
| 1868 | |
| 1869 #if (NGX_HTTP_FILE_CACHE) | |
| 1870 | |
| 1871 if (p->upstream_done && u->cachable) { | |
| 1872 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
| 1873 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1874 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1875 return; | |
| 1876 } | |
| 1877 | |
| 1878 } else if (p->upstream_eof && u->cachable) { | |
| 1879 | |
| 1880 /* TODO: check length & update cache */ | |
| 1881 | |
| 1882 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
| 1883 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1884 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1885 return; | |
| 1886 } | |
| 1887 } | |
| 1888 | |
| 1889 #endif | |
| 1890 | |
| 1891 if (p->upstream_done || p->upstream_eof || p->upstream_error) { | |
| 483 | 1892 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1893 "http upstream exit: %p", p->out); | |
| 479 | 1894 #if 0 |
| 1895 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1896 #endif | |
| 1897 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1898 return; | |
| 1899 } | |
| 1900 } | |
| 1901 | |
| 1902 if (p->downstream_error) { | |
| 483 | 1903 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1904 "http upstream downstream error"); | |
| 479 | 1905 |
| 1906 if (!u->cachable && u->peer.connection) { | |
| 1907 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1908 } | |
| 1909 } | |
| 1910 } | |
| 1911 | |
| 1912 | |
| 487 | 1913 static void |
| 1914 ngx_http_upstream_dummy_handler(ngx_event_t *wev) | |
| 479 | 1915 { |
| 1916 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
| 1917 "http upstream dummy handler"); | |
| 1918 } | |
| 1919 | |
| 1920 | |
| 487 | 1921 static void |
| 1922 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u, | |
| 1923 ngx_uint_t ft_type) | |
| 479 | 1924 { |
| 525 | 1925 ngx_uint_t status, down; |
| 479 | 1926 |
| 1927 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1928 "http next upstream, %xD", ft_type); | |
| 1929 | |
| 1930 #if 0 | |
| 1931 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1932 #endif | |
| 1933 | |
| 525 | 1934 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) { |
| 1935 down = 0; | |
| 1936 } else { | |
| 1937 down = 1; | |
| 479 | 1938 } |
| 525 | 1939 |
| 1940 ngx_event_connect_peer_failed(&u->peer, down); | |
| 1941 | |
| 479 | 1942 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) { |
| 1943 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT, | |
| 1944 "upstream timed out"); | |
| 1945 } | |
| 577 | 1946 |
| 479 | 1947 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) { |
| 1948 status = 0; | |
| 1949 | |
| 1950 } else { | |
| 1951 switch(ft_type) { | |
| 1952 | |
| 1953 case NGX_HTTP_UPSTREAM_FT_TIMEOUT: | |
| 1954 status = NGX_HTTP_GATEWAY_TIME_OUT; | |
| 1955 break; | |
| 1956 | |
| 1957 case NGX_HTTP_UPSTREAM_FT_HTTP_500: | |
| 1958 status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 1959 break; | |
| 1960 | |
| 1961 case NGX_HTTP_UPSTREAM_FT_HTTP_404: | |
| 1962 status = NGX_HTTP_NOT_FOUND; | |
| 1963 break; | |
| 1964 | |
| 1965 /* | |
| 1966 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING | |
| 1967 * never reach here | |
| 1968 */ | |
| 1969 | |
| 1970 default: | |
| 1971 status = NGX_HTTP_BAD_GATEWAY; | |
| 1972 } | |
| 1973 } | |
| 1974 | |
| 583 | 1975 if (r->connection->error) { |
| 479 | 1976 ngx_http_upstream_finalize_request(r, u, |
| 1977 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 1978 return; | |
| 1979 } | |
| 1980 | |
| 1981 if (status) { | |
| 1982 u->state->status = status; | |
| 1983 | |
| 525 | 1984 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) { |
| 479 | 1985 |
| 1986 #if (NGX_HTTP_CACHE) | |
| 1987 | |
| 1988 if (u->stale && (u->conf->use_stale & ft_type)) { | |
| 1989 ngx_http_upstream_finalize_request(r, u, | |
| 525 | 1990 ngx_http_send_cached_response(r)); |
| 479 | 1991 return; |
| 1992 } | |
| 1993 | |
| 1994 #endif | |
| 1995 | |
| 1996 ngx_http_upstream_finalize_request(r, u, status); | |
| 1997 return; | |
| 1998 } | |
| 1999 } | |
| 2000 | |
| 2001 if (u->peer.connection) { | |
| 2002 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2003 "close http upstream connection: %d", | |
| 2004 u->peer.connection->fd); | |
| 577 | 2005 #if (NGX_HTTP_SSL) |
| 2006 if (u->peer.connection->ssl) { | |
| 2007 ngx_http_upstream_ssl_shutdown(u->peer.connection, | |
| 2008 &u->peer.peers->peer[u->peer.cur_peer]); | |
| 2009 } | |
| 2010 #endif | |
| 479 | 2011 ngx_close_connection(u->peer.connection); |
| 2012 } | |
| 2013 | |
| 2014 #if 0 | |
| 2015 if (u->conf->busy_lock && !u->busy_locked) { | |
| 2016 ngx_http_upstream_busy_lock(p); | |
| 2017 return; | |
| 2018 } | |
| 2019 #endif | |
| 2020 | |
| 2021 ngx_http_upstream_connect(r, u); | |
| 2022 } | |
| 2023 | |
| 2024 | |
| 487 | 2025 static void |
| 569 | 2026 ngx_http_upstream_cleanup(void *data) |
| 2027 { | |
| 2028 ngx_http_request_t *r = data; | |
| 2029 | |
| 2030 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2031 "cleanup http upstream request: \"%V\"", &r->uri); | |
| 2032 | |
| 2033 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE); | |
| 2034 } | |
| 2035 | |
| 2036 | |
| 2037 static void | |
| 487 | 2038 ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
| 2039 ngx_http_upstream_t *u, ngx_int_t rc) | |
| 479 | 2040 { |
|
850
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
2041 ngx_time_t *tp; |
|
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
2042 ngx_msec_int_t ms; |
| 563 | 2043 |
| 483 | 2044 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 2045 "finalize http upstream request: %i", rc); | |
| 479 | 2046 |
| 569 | 2047 *u->cleanup = NULL; |
| 2048 | |
| 563 | 2049 if (u->state->response_time) { |
| 2050 tp = ngx_timeofday(); | |
|
850
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
2051 ms = tp->sec * 1000 + tp->msec - u->state->response_time; |
|
a164e55b4067
fix negative upstream response time
Igor Sysoev <igor@sysoev.ru>
parents:
787
diff
changeset
|
2052 u->state->response_time = (ms >= 0) ? ms : 0; |
| 563 | 2053 } |
| 2054 | |
| 479 | 2055 u->finalize_request(r, rc); |
| 2056 | |
| 2057 if (u->peer.connection) { | |
| 2058 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2059 "close http upstream connection: %d", | |
| 2060 u->peer.connection->fd); | |
| 577 | 2061 #if (NGX_HTTP_SSL) |
| 2062 | |
| 2063 /* TODO: do not shutdown persistent connection */ | |
| 2064 | |
| 2065 if (u->peer.connection->ssl) { | |
| 2066 ngx_http_upstream_ssl_shutdown(u->peer.connection, | |
| 2067 &u->peer.peers->peer[u->peer.cur_peer]); | |
| 2068 } | |
| 2069 #endif | |
| 479 | 2070 ngx_close_connection(u->peer.connection); |
| 2071 } | |
| 2072 | |
| 483 | 2073 u->peer.connection = NULL; |
| 2074 | |
| 563 | 2075 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE)) |
| 479 | 2076 { |
| 2077 rc = 0; | |
| 2078 } | |
| 2079 | |
| 581 | 2080 if (u->pipe && u->pipe->temp_file) { |
| 479 | 2081 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 2082 "http upstream temp fd: %d", | |
| 581 | 2083 u->pipe->temp_file->file.fd); |
| 479 | 2084 } |
| 2085 | |
| 2086 #if 0 | |
| 2087 if (u->cache) { | |
| 2088 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 483 | 2089 "http upstream cache fd: %d", |
| 479 | 2090 u->cache->ctx.file.fd); |
| 2091 } | |
| 2092 #endif | |
| 2093 | |
| 515 | 2094 if (rc == NGX_DECLINED) { |
| 2095 return; | |
| 2096 } | |
| 2097 | |
| 483 | 2098 r->connection->log->action = "sending to client"; |
| 2099 | |
| 629 | 2100 if (rc == 0 && r == r->main && !r->post_action) { |
| 581 | 2101 rc = ngx_http_send_special(r, NGX_HTTP_LAST); |
| 479 | 2102 } |
| 2103 | |
| 2104 ngx_http_finalize_request(r, rc); | |
| 2105 } | |
| 2106 | |
| 2107 | |
| 577 | 2108 #if (NGX_HTTP_SSL) |
| 2109 | |
| 2110 static void | |
| 2111 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer) | |
| 2112 { | |
| 2113 /* lock peer mutex */ | |
| 2114 | |
| 2115 if (peer->ssl_session) { | |
| 2116 ngx_ssl_free_session(peer->ssl_session); | |
| 2117 } | |
| 2118 | |
| 2119 peer->ssl_session = ngx_ssl_get_session(c); | |
| 2120 | |
| 2121 /* unlock peer mutex */ | |
| 2122 | |
| 2123 /* | |
| 2124 * We send the "close notify" shutdown alert to the upstream only | |
| 2125 * and do not wait its "close notify" shutdown alert. | |
| 2126 * It is acceptable according to the TLS standard. | |
| 2127 */ | |
| 2128 | |
| 2129 c->ssl->no_wait_shutdown = 1; | |
| 2130 | |
| 2131 (void) ngx_ssl_shutdown(c); | |
| 2132 } | |
| 2133 | |
| 2134 #endif | |
| 2135 | |
| 2136 | |
| 509 | 2137 static ngx_int_t |
| 2138 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2139 ngx_uint_t offset) | |
| 577 | 2140 { |
| 509 | 2141 ngx_table_elt_t **ph; |
| 577 | 2142 |
| 509 | 2143 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset); |
| 2144 | |
| 2145 if (*ph == NULL) { | |
| 2146 *ph = h; | |
| 2147 } | |
| 2148 | |
| 2149 return NGX_OK; | |
| 2150 } | |
| 2151 | |
| 2152 | |
| 2153 static ngx_int_t | |
| 2154 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
| 2155 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2156 { | |
| 2157 ngx_array_t *pa; | |
| 2158 ngx_table_elt_t **ph; | |
| 2159 | |
| 2160 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset); | |
| 2161 | |
| 2162 if (pa->elts == NULL) { | |
| 2163 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
| 2164 { | |
| 2165 return NGX_ERROR; | |
| 2166 } | |
| 2167 } | |
| 2168 | |
| 2169 ph = ngx_array_push(pa); | |
| 2170 if (ph == NULL) { | |
| 2171 return NGX_ERROR; | |
| 2172 } | |
| 2173 | |
| 2174 *ph = h; | |
| 2175 | |
| 2176 return NGX_OK; | |
| 2177 } | |
| 2178 | |
| 2179 | |
| 2180 static ngx_int_t | |
| 2181 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2182 ngx_uint_t offset) | |
| 2183 { | |
| 2184 return NGX_OK; | |
| 2185 } | |
| 2186 | |
| 2187 | |
| 2188 static ngx_int_t | |
| 527 | 2189 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2190 ngx_uint_t offset) | |
| 577 | 2191 { |
| 527 | 2192 ngx_int_t n; |
| 2193 | |
| 2194 r->upstream->headers_in.x_accel_limit_rate = h; | |
| 2195 | |
| 2196 n = ngx_atoi(h->value.data, h->value.len); | |
| 2197 | |
| 2198 if (n != NGX_ERROR) { | |
| 2199 r->limit_rate = (size_t) n; | |
| 2200 } | |
| 2201 | |
| 2202 return NGX_OK; | |
| 2203 } | |
| 2204 | |
| 2205 | |
| 2206 static ngx_int_t | |
| 649 | 2207 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2208 ngx_uint_t offset) | |
| 2209 { | |
| 2210 u_char c0, c1, c2; | |
| 2211 | |
| 2212 if (r->upstream->conf->change_buffering) { | |
| 2213 | |
| 2214 if (h->value.len == 2) { | |
| 2215 c0 = ngx_tolower(h->value.data[0]); | |
| 2216 c1 = ngx_tolower(h->value.data[1]); | |
| 2217 | |
| 2218 if (c0 == 'n' && c1 == 'o') { | |
| 2219 r->upstream->buffering = 0; | |
| 2220 } | |
| 2221 | |
| 2222 } else if (h->value.len == 3) { | |
| 2223 c0 = ngx_tolower(h->value.data[0]); | |
| 2224 c1 = ngx_tolower(h->value.data[1]); | |
| 2225 c2 = ngx_tolower(h->value.data[2]); | |
| 2226 | |
| 2227 if (c0 == 'y' && c1 == 'e' && c2 == 's') { | |
| 2228 r->upstream->buffering = 1; | |
| 2229 } | |
| 2230 } | |
| 2231 } | |
| 2232 | |
| 2233 return NGX_OK; | |
| 2234 } | |
| 2235 | |
| 2236 | |
| 2237 static ngx_int_t | |
| 657 | 2238 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2239 ngx_uint_t offset) | |
| 2240 { | |
| 2241 r->headers_out.override_charset = &h->value; | |
| 2242 | |
| 2243 return NGX_OK; | |
| 2244 } | |
| 2245 | |
| 2246 | |
| 2247 static ngx_int_t | |
| 509 | 2248 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2249 ngx_uint_t offset) | |
| 2250 { | |
| 573 | 2251 ngx_table_elt_t *ho, **ph; |
| 509 | 2252 |
| 2253 ho = ngx_list_push(&r->headers_out.headers); | |
| 2254 if (ho == NULL) { | |
| 2255 return NGX_ERROR; | |
| 2256 } | |
| 2257 | |
| 2258 *ho = *h; | |
| 2259 | |
| 573 | 2260 if (offset) { |
| 2261 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset); | |
| 2262 *ph = ho; | |
| 2263 } | |
| 2264 | |
| 509 | 2265 return NGX_OK; |
| 2266 } | |
| 2267 | |
| 2268 | |
| 2269 static ngx_int_t | |
| 2270 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
| 2271 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2272 { | |
| 2273 ngx_array_t *pa; | |
| 2274 ngx_table_elt_t *ho, **ph; | |
| 2275 | |
| 2276 pa = (ngx_array_t *) ((char *) &r->headers_out + offset); | |
| 2277 | |
| 2278 if (pa->elts == NULL) { | |
| 2279 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
| 2280 { | |
| 2281 return NGX_ERROR; | |
| 2282 } | |
| 2283 } | |
| 2284 | |
| 2285 ph = ngx_array_push(pa); | |
| 2286 if (ph == NULL) { | |
| 2287 return NGX_ERROR; | |
| 2288 } | |
| 2289 | |
| 2290 ho = ngx_list_push(&r->headers_out.headers); | |
| 2291 if (ho == NULL) { | |
| 2292 return NGX_ERROR; | |
| 2293 } | |
| 2294 | |
| 2295 *ho = *h; | |
| 2296 *ph = ho; | |
| 2297 | |
| 2298 return NGX_OK; | |
| 2299 } | |
| 2300 | |
| 2301 | |
| 2302 static ngx_int_t | |
| 2303 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2304 ngx_uint_t offset) | |
| 2305 { | |
| 657 | 2306 u_char *p, *last; |
| 2307 | |
| 2308 r->headers_out.content_type_len = h->value.len; | |
| 509 | 2309 r->headers_out.content_type = h->value; |
| 2310 | |
| 657 | 2311 for (p = h->value.data; *p; p++) { |
| 2312 | |
| 2313 if (*p != ';') { | |
| 2314 continue; | |
| 2315 } | |
| 2316 | |
| 2317 last = p; | |
| 2318 | |
| 2319 while (*++p == ' ') { /* void */ } | |
| 2320 | |
| 2321 if (ngx_strncasecmp(p, "charset=", 8) != 0) { | |
| 2322 continue; | |
| 2323 } | |
| 2324 | |
| 2325 p += 8; | |
| 2326 | |
| 2327 r->headers_out.content_type_len = last - h->value.data; | |
| 2328 | |
| 2329 r->headers_out.charset.len = h->value.data + h->value.len - p; | |
| 2330 r->headers_out.charset.data = p; | |
| 2331 } | |
| 2332 | |
| 509 | 2333 return NGX_OK; |
| 2334 } | |
| 2335 | |
| 2336 | |
| 2337 static ngx_int_t | |
| 2338 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2339 ngx_uint_t offset) | |
| 2340 { | |
| 2341 ngx_table_elt_t *ho; | |
| 2342 | |
| 2343 ho = ngx_list_push(&r->headers_out.headers); | |
| 2344 if (ho == NULL) { | |
| 2345 return NGX_ERROR; | |
| 2346 } | |
| 2347 | |
| 2348 *ho = *h; | |
| 2349 | |
| 2350 r->headers_out.content_length = ho; | |
| 2351 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len); | |
| 2352 | |
| 2353 return NGX_OK; | |
| 2354 } | |
| 2355 | |
| 2356 | |
| 2357 static ngx_int_t | |
| 2358 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2359 ngx_uint_t offset) | |
| 2360 { | |
| 2361 ngx_int_t rc; | |
| 2362 ngx_table_elt_t *ho; | |
| 2363 | |
| 2364 ho = ngx_list_push(&r->headers_out.headers); | |
| 2365 if (ho == NULL) { | |
| 2366 return NGX_ERROR; | |
| 2367 } | |
| 2368 | |
| 2369 *ho = *h; | |
| 2370 | |
| 2371 if (r->upstream->rewrite_redirect) { | |
| 2372 rc = r->upstream->rewrite_redirect(r, ho, 0); | |
| 2373 | |
| 529 | 2374 if (rc == NGX_DECLINED) { |
| 2375 return NGX_OK; | |
| 2376 } | |
| 2377 | |
| 509 | 2378 if (rc == NGX_OK) { |
| 2379 r->headers_out.location = ho; | |
| 2380 | |
| 2381 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2382 "rewritten location: \"%V\"", &ho->value); | |
| 2383 } | |
| 2384 | |
| 2385 return rc; | |
| 2386 } | |
| 2387 | |
| 2388 /* | |
| 2389 * we do not set r->headers_out.location here to avoid the handling | |
| 2390 * the local redirects without a host name by ngx_http_header_filter() | |
| 2391 */ | |
| 2392 | |
| 2393 return NGX_OK; | |
| 2394 } | |
| 2395 | |
| 2396 | |
| 2397 static ngx_int_t | |
| 2398 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2399 ngx_uint_t offset) | |
| 2400 { | |
| 2401 u_char *p; | |
| 2402 ngx_int_t rc; | |
| 2403 ngx_table_elt_t *ho; | |
| 2404 | |
| 2405 ho = ngx_list_push(&r->headers_out.headers); | |
| 2406 if (ho == NULL) { | |
| 2407 return NGX_ERROR; | |
| 2408 } | |
| 2409 | |
| 2410 *ho = *h; | |
| 2411 | |
| 2412 if (r->upstream->rewrite_redirect) { | |
| 2413 | |
| 2414 p = (u_char *) ngx_strstr(ho->value.data, "url="); | |
| 2415 | |
| 2416 if (p) { | |
| 2417 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data); | |
| 2418 | |
| 2419 } else { | |
| 2420 return NGX_OK; | |
| 2421 } | |
| 2422 | |
| 529 | 2423 if (rc == NGX_DECLINED) { |
| 2424 return NGX_OK; | |
| 2425 } | |
| 2426 | |
| 509 | 2427 #if (NGX_DEBUG) |
| 2428 if (rc == NGX_OK) { | |
| 2429 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2430 "rewritten refresh: \"%V\"", &ho->value); | |
| 2431 } | |
| 2432 #endif | |
| 2433 | |
| 2434 return rc; | |
| 2435 } | |
| 2436 | |
| 2437 return NGX_OK; | |
| 2438 } | |
| 2439 | |
| 2440 | |
| 2441 #if (NGX_HTTP_GZIP) | |
| 2442 | |
| 2443 static ngx_int_t | |
| 2444 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
| 2445 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2446 { | |
| 2447 ngx_table_elt_t *ho; | |
| 2448 | |
| 2449 ho = ngx_list_push(&r->headers_out.headers); | |
| 2450 if (ho == NULL) { | |
| 2451 return NGX_ERROR; | |
| 2452 } | |
| 2453 | |
| 2454 *ho = *h; | |
| 2455 | |
| 2456 r->headers_out.content_encoding = ho; | |
| 2457 | |
| 2458 return NGX_OK; | |
| 2459 } | |
| 2460 | |
| 2461 #endif | |
| 2462 | |
| 2463 | |
| 487 | 2464 static ngx_int_t |
| 573 | 2465 ngx_http_upstream_add_variables(ngx_conf_t *cf) |
| 479 | 2466 { |
| 880 | 2467 ngx_http_variable_t *var, *v; |
| 479 | 2468 |
| 573 | 2469 for (v = ngx_http_upstream_vars; v->name.len; v++) { |
| 2470 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
| 2471 if (var == NULL) { | |
| 2472 return NGX_ERROR; | |
| 2473 } | |
| 2474 | |
| 637 | 2475 var->get_handler = v->get_handler; |
| 573 | 2476 var->data = v->data; |
| 2477 } | |
| 2478 | |
| 479 | 2479 return NGX_OK; |
| 2480 } | |
| 509 | 2481 |
| 2482 | |
| 573 | 2483 static ngx_int_t |
| 2484 ngx_http_upstream_status_variable(ngx_http_request_t *r, | |
| 2485 ngx_http_variable_value_t *v, uintptr_t data) | |
| 2486 { | |
| 2487 u_char *p; | |
| 2488 size_t len; | |
| 2489 ngx_uint_t i; | |
| 2490 ngx_http_upstream_t *u; | |
| 2491 ngx_http_upstream_state_t *state; | |
| 2492 | |
| 2493 v->valid = 1; | |
| 2494 v->no_cachable = 0; | |
| 2495 v->not_found = 0; | |
| 2496 | |
| 2497 u = r->upstream; | |
| 2498 | |
| 2499 if (u == NULL || u->states.nelts == 0) { | |
| 2500 v->not_found = 1; | |
| 2501 return NGX_OK; | |
| 2502 } | |
| 2503 | |
| 2504 len = u->states.nelts * (3 + 2); | |
| 2505 | |
| 2506 p = ngx_palloc(r->pool, len); | |
| 2507 if (p == NULL) { | |
| 2508 return NGX_ERROR; | |
| 2509 } | |
| 2510 | |
| 2511 v->data = p; | |
| 2512 | |
| 2513 i = 0; | |
| 2514 state = u->states.elts; | |
| 2515 | |
| 2516 for ( ;; ) { | |
| 2517 if (state[i].status == 0) { | |
| 2518 *p++ = '-'; | |
| 2519 | |
| 2520 } else { | |
| 2521 p = ngx_sprintf(p, "%ui", state[i].status); | |
| 2522 } | |
| 2523 | |
| 2524 if (++i == u->states.nelts) { | |
| 2525 break; | |
| 2526 } | |
| 2527 | |
| 2528 *p++ = ','; | |
| 2529 *p++ = ' '; | |
| 2530 } | |
| 2531 | |
| 2532 v->len = p - v->data; | |
| 2533 | |
| 2534 return NGX_OK; | |
| 2535 } | |
| 2536 | |
| 2537 | |
| 2538 static ngx_int_t | |
| 2539 ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
| 2540 ngx_http_variable_value_t *v, uintptr_t data) | |
| 2541 { | |
| 2542 u_char *p; | |
| 2543 size_t len; | |
| 2544 ngx_uint_t i; | |
| 2545 ngx_http_upstream_t *u; | |
| 2546 ngx_http_upstream_state_t *state; | |
| 2547 | |
| 2548 v->valid = 1; | |
| 2549 v->no_cachable = 0; | |
| 2550 v->not_found = 0; | |
| 2551 | |
| 2552 u = r->upstream; | |
| 2553 | |
| 2554 if (u == NULL || u->states.nelts == 0) { | |
| 2555 v->not_found = 1; | |
| 2556 return NGX_OK; | |
| 2557 } | |
| 2558 | |
| 2559 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2); | |
| 2560 | |
| 2561 p = ngx_palloc(r->pool, len); | |
| 2562 if (p == NULL) { | |
| 2563 return NGX_ERROR; | |
| 2564 } | |
| 2565 | |
| 2566 v->data = p; | |
| 2567 | |
| 2568 i = 0; | |
| 2569 state = u->states.elts; | |
| 2570 | |
| 2571 for ( ;; ) { | |
| 2572 if (state[i].status == 0) { | |
| 2573 *p++ = '-'; | |
| 2574 | |
| 2575 } else { | |
| 2576 p = ngx_sprintf(p, "%d.%03d", | |
| 2577 state[i].response_time / 1000, | |
| 2578 state[i].response_time % 1000); | |
| 2579 } | |
| 2580 | |
| 2581 if (++i == u->states.nelts) { | |
| 2582 break; | |
| 2583 } | |
| 2584 | |
| 2585 *p++ = ','; | |
| 2586 *p++ = ' '; | |
| 2587 } | |
| 2588 | |
| 2589 v->len = p - v->data; | |
| 2590 | |
| 2591 return NGX_OK; | |
| 2592 } | |
| 2593 | |
| 2594 | |
| 651 | 2595 static char * |
| 2596 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) | |
| 2597 { | |
| 2598 char *rv; | |
| 2599 void *mconf; | |
| 2600 ngx_str_t *value; | |
| 2601 ngx_url_t u; | |
| 2602 ngx_uint_t i, j, m, n; | |
| 2603 ngx_conf_t pcf; | |
| 2604 ngx_peers_t **peers; | |
| 2605 ngx_http_module_t *module; | |
| 2606 ngx_http_conf_ctx_t *ctx; | |
| 2607 ngx_http_upstream_srv_conf_t *uscf; | |
| 2608 | |
| 2609 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); | |
| 2610 if (ctx == NULL) { | |
| 2611 return NGX_CONF_ERROR; | |
| 2612 } | |
| 2613 | |
| 2614 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 2615 | |
| 2616 value = cf->args->elts; | |
| 2617 u.host = value[1]; | |
| 2618 | |
| 2619 uscf = ngx_http_upstream_add(cf, &u); | |
| 2620 if (uscf == NULL) { | |
| 2621 return NGX_CONF_ERROR; | |
| 2622 } | |
| 2623 | |
| 2624 /* the upstream{}'s srv_conf */ | |
| 2625 | |
| 2626 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 2627 if (ctx->srv_conf == NULL) { | |
| 2628 return NGX_CONF_ERROR; | |
| 2629 } | |
| 2630 | |
| 2631 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf; | |
| 2632 | |
| 2633 | |
| 2634 /* the upstream{}'s loc_conf */ | |
| 2635 | |
| 2636 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 2637 if (ctx->loc_conf == NULL) { | |
| 2638 return NGX_CONF_ERROR; | |
| 2639 } | |
| 2640 | |
| 2641 for (m = 0; ngx_modules[m]; m++) { | |
| 2642 if (ngx_modules[m]->type != NGX_HTTP_MODULE) { | |
| 2643 continue; | |
| 2644 } | |
| 2645 | |
| 2646 module = ngx_modules[m]->ctx; | |
| 2647 | |
| 2648 if (module->create_loc_conf) { | |
| 2649 mconf = module->create_loc_conf(cf); | |
| 2650 if (mconf == NULL) { | |
| 2651 return NGX_CONF_ERROR; | |
| 2652 } | |
| 2653 | |
| 2654 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf; | |
| 2655 } | |
| 2656 } | |
| 2657 | |
| 2658 | |
| 2659 /* parse inside upstream{} */ | |
| 2660 | |
| 2661 pcf = *cf; | |
| 2662 cf->ctx = ctx; | |
| 2663 cf->cmd_type = NGX_HTTP_UPS_CONF; | |
| 2664 | |
| 2665 rv = ngx_conf_parse(cf, NULL); | |
| 2666 | |
| 2667 *cf = pcf; | |
| 2668 | |
| 2669 if (rv != NGX_CONF_OK) { | |
| 2670 return rv; | |
| 2671 } | |
| 2672 | |
| 2673 if (uscf->servers == NULL) { | |
| 2674 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2675 "no servers are inside upstream"); | |
| 2676 return NGX_CONF_ERROR; | |
| 2677 } | |
| 2678 | |
| 2679 peers = uscf->servers->elts; | |
| 2680 | |
| 2681 if (uscf->servers->nelts == 1) { | |
| 2682 uscf->peers = peers[0]; | |
| 2683 } | |
| 2684 | |
| 2685 n = 0; | |
| 2686 | |
| 2687 for (i = 0; i < uscf->servers->nelts; i++) { | |
| 2688 n += peers[i]->number; | |
| 2689 } | |
| 2690 | |
| 2691 uscf->peers = ngx_pcalloc(cf->pool, | |
| 2692 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1)); | |
| 2693 if (uscf->peers == NULL) { | |
| 2694 return NGX_CONF_ERROR; | |
| 2695 } | |
| 2696 | |
| 2697 uscf->peers->number = n; | |
| 2698 | |
| 2699 n = 0; | |
| 2700 | |
| 2701 for (i = 0; i < uscf->servers->nelts; i++) { | |
| 2702 for (j = 0; j < peers[i]->number; j++) { | |
| 2703 uscf->peers->peer[n++] = peers[i]->peer[j]; | |
| 2704 } | |
| 2705 } | |
| 2706 | |
| 2707 return rv; | |
| 2708 } | |
| 2709 | |
| 2710 | |
| 2711 static char * | |
| 2712 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 2713 { | |
| 2714 ngx_http_upstream_srv_conf_t *uscf = conf; | |
| 2715 | |
| 2716 ngx_str_t *value; | |
| 2717 ngx_url_t u; | |
| 663 | 2718 ngx_int_t weight; |
| 2719 ngx_uint_t i; | |
| 651 | 2720 ngx_peers_t **peers; |
| 2721 | |
| 2722 if (uscf->servers == NULL) { | |
| 2723 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *)); | |
| 2724 if (uscf->servers == NULL) { | |
| 2725 return NGX_CONF_ERROR; | |
| 2726 } | |
| 2727 } | |
| 2728 | |
| 2729 peers = ngx_array_push(uscf->servers); | |
| 2730 if (peers == NULL) { | |
| 2731 return NGX_CONF_ERROR; | |
| 2732 } | |
| 2733 | |
| 2734 value = cf->args->elts; | |
| 2735 | |
| 2736 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 2737 | |
| 2738 u.url = value[1]; | |
| 2739 u.default_portn = 80; | |
| 2740 | |
| 2741 if (ngx_parse_url(cf, &u) != NGX_OK) { | |
| 2742 if (u.err) { | |
| 2743 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2744 "%s in upstream \"%V\"", u.err, &u.url); | |
| 2745 } | |
| 2746 | |
| 2747 return NGX_CONF_ERROR; | |
| 2748 } | |
| 2749 | |
| 663 | 2750 weight = 1; |
| 2751 | |
| 2752 if (cf->args->nelts == 3) { | |
| 2753 | |
| 2754 value = &value[2]; | |
| 2755 | |
| 2756 if (ngx_strncmp(value->data, "weight=", 7) == 0) { | |
| 2757 | |
| 2758 weight = ngx_atoi(&value->data[7], value->len - 7); | |
| 2759 | |
| 2760 if (weight == NGX_ERROR || weight == 0) { | |
| 2761 goto invalid; | |
| 2762 } | |
| 2763 | |
| 2764 } else { | |
| 2765 goto invalid; | |
| 2766 } | |
| 2767 } | |
| 2768 | |
| 2769 for (i = 0; i < u.peers->number; i++) { | |
| 2770 u.peers->peer[i].weight = weight; | |
| 2771 u.peers->peer[i].current_weight = weight; | |
| 2772 u.peers->peer[i].max_fails = NGX_CONF_UNSET_UINT; | |
| 2773 u.peers->peer[i].fail_timeout = NGX_CONF_UNSET; | |
| 2774 } | |
| 2775 | |
| 651 | 2776 *peers = u.peers; |
| 2777 | |
| 2778 return NGX_CONF_OK; | |
| 663 | 2779 |
| 2780 invalid: | |
| 2781 | |
| 2782 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", value); | |
| 2783 | |
| 2784 return NGX_CONF_ERROR; | |
| 651 | 2785 } |
| 2786 | |
| 2787 | |
| 2788 ngx_http_upstream_srv_conf_t * | |
| 2789 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u) | |
| 2790 { | |
| 2791 ngx_uint_t i; | |
| 2792 ngx_http_upstream_srv_conf_t *uscf, **uscfp; | |
| 2793 ngx_http_upstream_main_conf_t *umcf; | |
| 2794 | |
| 2795 if (u->upstream) { | |
| 2796 if (ngx_parse_url(cf, u) != NGX_OK) { | |
| 2797 if (u->err) { | |
| 2798 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2799 "%s in upstream \"%V\"", u->err, &u->url); | |
| 2800 } | |
| 2801 | |
| 2802 return NULL; | |
| 2803 } | |
| 2804 | |
| 2805 if (u->peers) { | |
| 2806 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t)); | |
| 2807 if (uscf == NULL) { | |
| 2808 return NULL; | |
| 2809 } | |
| 2810 | |
| 2811 uscf->peers = u->peers; | |
| 2812 | |
| 2813 return uscf; | |
| 2814 } | |
| 2815 } | |
| 2816 | |
| 2817 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module); | |
| 2818 | |
| 2819 uscfp = umcf->upstreams.elts; | |
| 2820 | |
| 2821 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
| 2822 if (uscfp[i]->host.len != u->host.len) { | |
| 2823 continue; | |
| 2824 } | |
| 2825 | |
| 2826 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len) | |
| 2827 == 0) | |
| 2828 { | |
| 2829 return uscfp[i]; | |
| 2830 } | |
| 2831 } | |
| 2832 | |
| 2833 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t)); | |
| 2834 if (uscf == NULL) { | |
| 2835 return NULL; | |
| 2836 } | |
| 2837 | |
| 2838 uscf->host = u->host; | |
| 2839 uscf->file_name = cf->conf_file->file.name; | |
| 2840 uscf->line = cf->conf_file->line; | |
| 2841 uscf->port = u->default_portn; | |
| 2842 | |
| 2843 uscfp = ngx_array_push(&umcf->upstreams); | |
| 2844 if (uscfp == NULL) { | |
| 2845 return NULL; | |
| 2846 } | |
| 2847 | |
| 2848 *uscfp = uscf; | |
| 2849 | |
| 2850 return uscf; | |
| 2851 } | |
| 2852 | |
| 2853 | |
| 509 | 2854 static void * |
| 2855 ngx_http_upstream_create_main_conf(ngx_conf_t *cf) | |
| 2856 { | |
| 2857 ngx_http_upstream_main_conf_t *umcf; | |
| 2858 | |
| 2859 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t)); | |
| 2860 if (umcf == NULL) { | |
| 2861 return NULL; | |
| 2862 } | |
| 2863 | |
| 651 | 2864 if (ngx_array_init(&umcf->upstreams, cf->pool, 4, |
| 2865 sizeof(ngx_http_upstream_srv_conf_t *)) | |
| 2866 != NGX_OK) | |
| 2867 { | |
| 2868 return NGX_CONF_ERROR; | |
| 2869 } | |
| 2870 | |
| 509 | 2871 return umcf; |
| 2872 } | |
| 2873 | |
| 2874 | |
| 2875 static char * | |
| 651 | 2876 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf) |
| 509 | 2877 { |
| 2878 ngx_http_upstream_main_conf_t *umcf = conf; | |
| 2879 | |
| 651 | 2880 ngx_uint_t i; |
| 2881 ngx_array_t headers_in; | |
| 2882 ngx_hash_key_t *hk; | |
| 2883 ngx_hash_init_t hash; | |
| 2884 ngx_http_upstream_header_t *header; | |
| 2885 ngx_http_upstream_srv_conf_t **uscfp; | |
| 2886 | |
| 2887 uscfp = umcf->upstreams.elts; | |
| 2888 | |
| 2889 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
| 2890 if (uscfp[i]->peers) { | |
| 2891 continue; | |
| 2892 } | |
| 2893 | |
| 2894 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host, | |
| 663 | 2895 uscfp[i]->port); |
| 651 | 2896 if (uscfp[i]->peers == NULL) { |
| 2897 return NGX_CONF_ERROR; | |
| 2898 } | |
| 2899 | |
| 2900 if (uscfp[i]->peers == NGX_CONF_ERROR) { | |
| 2901 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 2902 "upstream host \"%V\" is not found in %s:%ui", | |
| 2903 &uscfp[i]->host, uscfp[i]->file_name.data, | |
| 2904 uscfp[i]->line); | |
| 2905 return NGX_CONF_ERROR; | |
| 2906 } | |
| 2907 } | |
| 649 | 2908 |
| 663 | 2909 |
| 649 | 2910 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t)) |
| 2911 != NGX_OK) | |
| 509 | 2912 { |
| 2913 return NGX_CONF_ERROR; | |
| 2914 } | |
| 2915 | |
| 649 | 2916 for (header = ngx_http_upstream_headers_in; header->name.len; header++) { |
| 2917 hk = ngx_array_push(&headers_in); | |
| 2918 if (hk == NULL) { | |
| 2919 return NGX_CONF_ERROR; | |
| 2920 } | |
| 2921 | |
| 2922 hk->key = header->name; | |
| 2923 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len); | |
| 2924 hk->value = header; | |
| 2925 } | |
| 2926 | |
| 2927 hash.hash = &umcf->headers_in_hash; | |
| 2928 hash.key = ngx_hash_key_lc; | |
| 2929 hash.max_size = 512; | |
|
751
bae59a740c40
align hash bucket size to cache line
Igor Sysoev <igor@sysoev.ru>
parents:
750
diff
changeset
|
2930 hash.bucket_size = ngx_align(64, ngx_cacheline_size); |
| 649 | 2931 hash.name = "upstream_headers_in_hash"; |
| 2932 hash.pool = cf->pool; | |
| 2933 hash.temp_pool = NULL; | |
| 2934 | |
| 2935 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) { | |
| 2936 return NGX_CONF_ERROR; | |
| 2937 } | |
| 509 | 2938 |
| 2939 return NGX_CONF_OK; | |
| 2940 } |