Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.c @ 1109:1402dbb554c4
add debug logging
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Thu, 15 Feb 2007 10:00:59 +0000 |
| parents | db7c468c447d |
| children | c6c42497106c |
| 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 #endif | |
| 91 | |
| 509 | 92 |
| 93 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = { | |
| 94 | |
| 95 { ngx_string("Status"), | |
| 96 ngx_http_upstream_process_header_line, | |
| 97 offsetof(ngx_http_upstream_headers_in_t, status), | |
| 649 | 98 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 509 | 99 |
| 100 { ngx_string("Content-Type"), | |
| 101 ngx_http_upstream_process_header_line, | |
| 102 offsetof(ngx_http_upstream_headers_in_t, content_type), | |
| 673 | 103 ngx_http_upstream_copy_content_type, 0, 1 }, |
| 509 | 104 |
| 105 { ngx_string("Content-Length"), | |
| 106 ngx_http_upstream_process_header_line, | |
| 107 offsetof(ngx_http_upstream_headers_in_t, content_length), | |
| 515 | 108 ngx_http_upstream_copy_content_length, 0, 0 }, |
| 509 | 109 |
| 110 { ngx_string("Date"), | |
| 111 ngx_http_upstream_process_header_line, | |
| 112 offsetof(ngx_http_upstream_headers_in_t, date), | |
| 649 | 113 ngx_http_upstream_copy_header_line, |
| 114 offsetof(ngx_http_headers_out_t, date), 0 }, | |
| 509 | 115 |
| 116 { ngx_string("Server"), | |
| 117 ngx_http_upstream_process_header_line, | |
| 118 offsetof(ngx_http_upstream_headers_in_t, server), | |
| 649 | 119 ngx_http_upstream_copy_header_line, |
| 120 offsetof(ngx_http_headers_out_t, server), 0 }, | |
| 509 | 121 |
| 529 | 122 { ngx_string("WWW-Authenticate"), |
| 123 ngx_http_upstream_process_header_line, | |
| 124 offsetof(ngx_http_upstream_headers_in_t, www_authenticate), | |
| 125 ngx_http_upstream_copy_header_line, 0, 0 }, | |
| 126 | |
| 509 | 127 { ngx_string("Location"), |
| 128 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 129 ngx_http_upstream_rewrite_location, 0, 0 }, |
| 509 | 130 |
| 131 { ngx_string("Refresh"), | |
| 132 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 133 ngx_http_upstream_rewrite_refresh, 0, 0 }, |
| 134 | |
| 135 { ngx_string("Set-Cookie"), | |
| 136 ngx_http_upstream_ignore_header_line, 0, | |
| 531 | 137 ngx_http_upstream_copy_header_line, 0, 1 }, |
| 138 | |
| 139 { ngx_string("Content-Disposition"), | |
| 140 ngx_http_upstream_ignore_header_line, 0, | |
| 141 ngx_http_upstream_copy_header_line, 0, 1 }, | |
| 509 | 142 |
| 143 { ngx_string("Cache-Control"), | |
| 144 ngx_http_upstream_process_multi_header_lines, | |
| 145 offsetof(ngx_http_upstream_headers_in_t, cache_control), | |
| 146 ngx_http_upstream_copy_multi_header_lines, | |
| 515 | 147 offsetof(ngx_http_headers_out_t, cache_control), 1 }, |
| 509 | 148 |
| 573 | 149 { ngx_string("Expires"), |
| 150 ngx_http_upstream_process_header_line, | |
| 151 offsetof(ngx_http_upstream_headers_in_t, expires), | |
| 152 ngx_http_upstream_copy_header_line, | |
| 153 offsetof(ngx_http_headers_out_t, expires), 1 }, | |
| 154 | |
| 577 | 155 { ngx_string("Accept-Ranges"), |
| 156 ngx_http_upstream_process_header_line, | |
| 157 offsetof(ngx_http_upstream_headers_in_t, accept_ranges), | |
| 158 ngx_http_upstream_copy_header_line, | |
| 159 offsetof(ngx_http_headers_out_t, accept_ranges), 1 }, | |
| 160 | |
| 509 | 161 { ngx_string("Connection"), |
| 162 ngx_http_upstream_ignore_header_line, 0, | |
| 515 | 163 ngx_http_upstream_ignore_header_line, 0, 0 }, |
| 509 | 164 |
| 641 | 165 { ngx_string("Keep-Alive"), |
| 166 ngx_http_upstream_ignore_header_line, 0, | |
| 167 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 168 | |
| 509 | 169 { ngx_string("X-Powered-By"), |
| 170 ngx_http_upstream_ignore_header_line, 0, | |
| 649 | 171 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 509 | 172 |
| 173 { ngx_string("X-Accel-Expires"), | |
| 174 ngx_http_upstream_process_header_line, | |
| 175 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires), | |
| 649 | 176 ngx_http_upstream_copy_header_line, 0, 0 }, |
| 515 | 177 |
| 178 { ngx_string("X-Accel-Redirect"), | |
| 179 ngx_http_upstream_process_header_line, | |
| 180 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect), | |
| 181 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 509 | 182 |
| 527 | 183 { ngx_string("X-Accel-Limit-Rate"), |
| 184 ngx_http_upstream_process_limit_rate, 0, | |
| 185 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 186 | |
| 649 | 187 { ngx_string("X-Accel-Buffering"), |
| 188 ngx_http_upstream_process_buffering, 0, | |
| 189 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 190 | |
| 657 | 191 { ngx_string("X-Accel-Charset"), |
| 192 ngx_http_upstream_process_charset, 0, | |
| 193 ngx_http_upstream_ignore_header_line, 0, 0 }, | |
| 194 | |
| 509 | 195 #if (NGX_HTTP_GZIP) |
| 196 { ngx_string("Content-Encoding"), | |
| 197 ngx_http_upstream_process_header_line, | |
| 198 offsetof(ngx_http_upstream_headers_in_t, content_encoding), | |
| 515 | 199 ngx_http_upstream_copy_content_encoding, 0, 0 }, |
| 509 | 200 #endif |
| 201 | |
| 515 | 202 { ngx_null_string, NULL, 0, NULL, 0, 0 } |
| 509 | 203 }; |
| 479 | 204 |
| 205 | |
| 651 | 206 static ngx_command_t ngx_http_upstream_commands[] = { |
| 207 | |
| 208 { ngx_string("upstream"), | |
| 209 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1, | |
| 210 ngx_http_upstream, | |
| 211 0, | |
| 212 0, | |
| 213 NULL }, | |
| 214 | |
| 215 { ngx_string("server"), | |
| 884 | 216 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE, |
| 651 | 217 ngx_http_upstream_server, |
| 218 NGX_HTTP_SRV_CONF_OFFSET, | |
| 219 0, | |
| 220 NULL }, | |
| 221 | |
| 222 ngx_null_command | |
| 223 }; | |
| 224 | |
| 225 | |
| 226 static ngx_http_module_t ngx_http_upstream_module_ctx = { | |
| 573 | 227 ngx_http_upstream_add_variables, /* preconfiguration */ |
| 509 | 228 NULL, /* postconfiguration */ |
| 229 | |
| 230 ngx_http_upstream_create_main_conf, /* create main configuration */ | |
| 651 | 231 ngx_http_upstream_init_main_conf, /* init main configuration */ |
| 479 | 232 |
| 233 NULL, /* create server configuration */ | |
| 234 NULL, /* merge server configuration */ | |
| 235 | |
| 236 NULL, /* create location configuration */ | |
| 237 NULL /* merge location configuration */ | |
| 238 }; | |
| 577 | 239 |
| 479 | 240 |
| 241 ngx_module_t ngx_http_upstream_module = { | |
| 509 | 242 NGX_MODULE_V1, |
| 479 | 243 &ngx_http_upstream_module_ctx, /* module context */ |
| 651 | 244 ngx_http_upstream_commands, /* module directives */ |
| 479 | 245 NGX_HTTP_MODULE, /* module type */ |
| 541 | 246 NULL, /* init master */ |
| 479 | 247 NULL, /* init module */ |
| 541 | 248 NULL, /* init process */ |
| 249 NULL, /* init thread */ | |
| 250 NULL, /* exit thread */ | |
| 251 NULL, /* exit process */ | |
| 252 NULL, /* exit master */ | |
| 253 NGX_MODULE_V1_PADDING | |
| 479 | 254 }; |
| 255 | |
| 256 | |
| 573 | 257 static ngx_http_variable_t ngx_http_upstream_vars[] = { |
| 258 | |
| 637 | 259 { ngx_string("upstream_status"), NULL, |
| 583 | 260 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| 573 | 261 |
| 637 | 262 { ngx_string("upstream_response_time"), NULL, |
| 583 | 263 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 }, |
| 573 | 264 |
| 637 | 265 { ngx_null_string, NULL, NULL, 0, 0, 0 } |
| 573 | 266 }; |
| 267 | |
| 268 | |
| 487 | 269 void |
| 270 ngx_http_upstream_init(ngx_http_request_t *r) | |
| 479 | 271 { |
| 509 | 272 ngx_connection_t *c; |
| 569 | 273 ngx_http_cleanup_t *cln; |
| 509 | 274 ngx_http_upstream_t *u; |
| 275 ngx_http_core_loc_conf_t *clcf; | |
| 479 | 276 |
| 277 c = r->connection; | |
| 278 | |
| 279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 280 "http init upstream, client timer: %d", c->read->timer_set); | |
| 281 | |
| 282 if (c->read->timer_set) { | |
| 283 ngx_del_timer(c->read); | |
| 284 } | |
| 285 | |
| 629 | 286 u = r->upstream; |
| 287 | |
| 288 if (!r->post_action && !u->conf->ignore_client_abort) { | |
| 615 | 289 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection; |
| 290 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection; | |
| 291 } | |
| 577 | 292 |
| 479 | 293 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) { |
| 294 | |
| 295 if (!c->write->active) { | |
| 531 | 296 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT) |
| 297 == NGX_ERROR) | |
| 479 | 298 { |
| 299 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 300 return; | |
| 301 } | |
| 302 } | |
| 303 } | |
| 304 | |
| 537 | 305 if (r->request_body) { |
| 306 u->request_bufs = r->request_body->bufs; | |
| 307 } | |
| 509 | 308 |
| 884 | 309 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) { |
| 310 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 311 return; | |
| 312 } | |
| 313 | |
| 537 | 314 if (u->create_request(r) != NGX_OK) { |
| 479 | 315 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 316 return; | |
| 317 } | |
| 318 | |
| 509 | 319 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| 479 | 320 |
| 321 u->output.sendfile = r->connection->sendfile; | |
| 322 u->output.pool = r->pool; | |
| 323 u->output.bufs.num = 1; | |
| 509 | 324 u->output.bufs.size = clcf->client_body_buffer_size; |
| 479 | 325 u->output.output_filter = ngx_chain_writer; |
| 326 u->output.filter_ctx = &u->writer; | |
| 327 | |
| 328 u->writer.pool = r->pool; | |
| 329 | |
| 884 | 330 if (ngx_array_init(&u->states, r->pool, 1, |
| 569 | 331 sizeof(ngx_http_upstream_state_t)) |
| 332 != NGX_OK) | |
| 479 | 333 { |
| 334 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 335 return; | |
| 336 } | |
| 337 | |
| 593 | 338 cln = ngx_http_cleanup_add(r, 0); |
| 569 | 339 if (cln == NULL) { |
| 340 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 341 return; | |
| 342 } | |
| 343 | |
| 344 cln->handler = ngx_http_upstream_cleanup; | |
| 345 cln->data = r; | |
| 346 u->cleanup = &cln->handler; | |
| 347 | |
| 479 | 348 ngx_http_upstream_connect(r, u); |
| 349 } | |
| 350 | |
| 351 | |
| 487 | 352 static void |
| 509 | 353 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r) |
| 354 { | |
| 355 ngx_http_upstream_check_broken_connection(r, r->connection->read); | |
| 356 } | |
| 357 | |
| 358 | |
| 359 static void | |
| 360 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r) | |
| 361 { | |
| 362 ngx_http_upstream_check_broken_connection(r, r->connection->write); | |
| 363 } | |
| 364 | |
| 365 | |
| 366 static void | |
| 367 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r, | |
| 368 ngx_event_t *ev) | |
| 479 | 369 { |
| 370 int n; | |
| 371 char buf[1]; | |
| 577 | 372 ngx_err_t err; |
| 479 | 373 ngx_connection_t *c; |
| 374 ngx_http_upstream_t *u; | |
| 375 | |
| 527 | 376 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0, |
| 377 "http upstream check client, write event:%d, \"%V\"", | |
| 378 ev->write, &r->uri); | |
| 479 | 379 |
| 509 | 380 c = r->connection; |
| 483 | 381 u = r->upstream; |
| 382 | |
| 583 | 383 if (c->error) { |
| 527 | 384 ngx_http_upstream_finalize_request(r, u, |
| 385 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 386 return; | |
| 387 } | |
| 388 | |
| 483 | 389 if (u->peer.connection == NULL) { |
| 390 return; | |
| 391 } | |
| 392 | |
| 479 | 393 #if (NGX_HAVE_KQUEUE) |
| 394 | |
| 395 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
| 396 | |
| 397 if (!ev->pending_eof) { | |
| 398 return; | |
| 399 } | |
| 400 | |
| 401 ev->eof = 1; | |
| 583 | 402 c->error = 1; |
| 479 | 403 |
| 404 if (ev->kq_errno) { | |
| 405 ev->error = 1; | |
| 406 } | |
| 407 | |
| 408 if (!u->cachable && u->peer.connection) { | |
| 409 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
| 527 | 410 "kevent() reported that client closed prematurely " |
| 411 "connection, so upstream connection is closed too"); | |
| 479 | 412 ngx_http_upstream_finalize_request(r, u, |
| 413 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 414 return; | |
| 415 } | |
| 416 | |
| 417 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno, | |
| 418 "kevent() reported that client closed " | |
| 419 "prematurely connection"); | |
| 420 | |
| 421 if (u->peer.connection == NULL) { | |
| 422 ngx_http_upstream_finalize_request(r, u, | |
| 423 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 424 return; | |
| 425 } | |
| 426 | |
| 427 return; | |
| 428 } | |
| 429 | |
| 430 #endif | |
| 431 | |
| 432 n = recv(c->fd, buf, 1, MSG_PEEK); | |
| 433 | |
| 434 err = ngx_socket_errno; | |
| 435 | |
| 1109 | 436 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err, |
| 437 "http upstream recv(): %d", n); | |
| 438 | |
| 479 | 439 /* |
| 440 * we do not need to disable the write event because | |
| 441 * that event has NGX_USE_CLEAR_EVENT type | |
| 442 */ | |
| 443 | |
| 444 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) { | |
| 445 return; | |
| 446 } | |
| 447 | |
| 448 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) { | |
| 449 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { | |
| 450 ngx_http_upstream_finalize_request(r, u, | |
| 451 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 452 return; | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 if (n > 0) { | |
| 457 return; | |
| 458 } | |
| 459 | |
| 460 if (n == -1) { | |
| 461 if (err == NGX_EAGAIN) { | |
| 462 return; | |
| 463 } | |
| 464 | |
| 465 ev->error = 1; | |
| 466 | |
| 483 | 467 } else { /* n == 0 */ |
| 479 | 468 err = 0; |
| 469 } | |
| 470 | |
| 529 | 471 ev->eof = 1; |
| 583 | 472 c->error = 1; |
| 529 | 473 |
| 479 | 474 if (!u->cachable && u->peer.connection) { |
| 475 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
| 476 "client closed prematurely connection, " | |
| 477 "so upstream connection is closed too"); | |
| 478 ngx_http_upstream_finalize_request(r, u, | |
| 479 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 480 return; | |
| 481 } | |
| 482 | |
| 483 ngx_log_error(NGX_LOG_INFO, ev->log, err, | |
| 484 "client closed prematurely connection"); | |
| 485 | |
| 486 if (u->peer.connection == NULL) { | |
| 487 ngx_http_upstream_finalize_request(r, u, | |
| 488 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 489 return; | |
| 490 } | |
| 491 } | |
| 492 | |
| 493 | |
| 487 | 494 static void |
| 495 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 479 | 496 { |
| 591 | 497 ngx_int_t rc; |
| 665 | 498 ngx_time_t *tp; |
| 591 | 499 ngx_connection_t *c; |
| 479 | 500 |
| 483 | 501 r->connection->log->action = "connecting to upstream"; |
| 479 | 502 |
| 503 r->connection->single_connection = 0; | |
| 504 | |
|
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505 if (u->state && u->state->response_sec) { |
| 665 | 506 tp = ngx_timeofday(); |
|
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507 u->state->response_sec = tp->sec - u->state->response_sec; |
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508 u->state->response_msec = tp->msec - u->state->response_msec; |
| 665 | 509 } |
| 510 | |
| 511 u->state = ngx_array_push(&u->states); | |
| 512 if (u->state == NULL) { | |
| 513 ngx_http_upstream_finalize_request(r, u, | |
| 514 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 515 return; | |
| 516 } | |
| 517 | |
| 518 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t)); | |
| 519 | |
| 520 tp = ngx_timeofday(); | |
|
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521 u->state->response_sec = tp->sec; |
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522 u->state->response_msec = tp->msec; |
| 665 | 523 |
| 479 | 524 rc = ngx_event_connect_peer(&u->peer); |
| 525 | |
| 526 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 527 "http upstream connect: %i", rc); | |
| 528 | |
| 529 if (rc == NGX_ERROR) { | |
| 530 ngx_http_upstream_finalize_request(r, u, | |
| 531 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 532 return; | |
| 533 } | |
| 534 | |
| 884 | 535 u->state->peer = u->peer.name; |
| 479 | 536 |
| 543 | 537 if (rc == NGX_BUSY) { |
| 538 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams"); | |
| 539 } | |
| 540 | |
| 541 if (rc == NGX_BUSY || rc == NGX_DECLINED) { | |
| 479 | 542 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
| 543 return; | |
| 544 } | |
| 545 | |
| 577 | 546 /* rc == NGX_OK || rc == NGX_AGAIN */ |
| 547 | |
| 479 | 548 c = u->peer.connection; |
| 549 | |
| 550 c->data = r; | |
| 591 | 551 |
| 509 | 552 c->write->handler = ngx_http_upstream_send_request_handler; |
| 553 c->read->handler = ngx_http_upstream_process_header; | |
| 479 | 554 |
| 555 c->sendfile = r->connection->sendfile; | |
| 556 | |
| 557 c->pool = r->pool; | |
| 558 c->read->log = c->write->log = c->log = r->connection->log; | |
| 559 | |
| 560 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */ | |
| 561 | |
| 562 u->writer.out = NULL; | |
| 563 u->writer.last = &u->writer.out; | |
| 564 u->writer.connection = c; | |
| 565 u->writer.limit = 0; | |
| 566 | |
| 567 if (u->request_sent) { | |
| 509 | 568 if (ngx_http_upstream_reinit(r, u) != NGX_OK) { |
| 569 ngx_http_upstream_finalize_request(r, u, | |
| 570 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 571 return; | |
| 572 } | |
| 479 | 573 } |
| 574 | |
|
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575 if (r->request_body |
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576 && r->request_body->buf |
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577 && r->request_body->temp_file |
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578 && r == r->main) |
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579 { |
| 573 | 580 /* |
| 581 * the r->request_body->buf can be reused for one request only, | |
| 582 * the subrequests should allocate their own temporay bufs | |
| 583 */ | |
| 584 | |
| 585 u->output.free = ngx_alloc_chain_link(r->pool); | |
| 586 if (u->output.free == NULL) { | |
| 587 ngx_http_upstream_finalize_request(r, u, | |
| 588 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 589 return; | |
| 479 | 590 } |
| 573 | 591 |
| 592 u->output.free->buf = r->request_body->buf; | |
| 593 u->output.free->next = NULL; | |
| 594 u->output.allocated = 1; | |
| 595 | |
| 596 r->request_body->buf->pos = r->request_body->buf->start; | |
| 597 r->request_body->buf->last = r->request_body->buf->start; | |
| 598 r->request_body->buf->tag = u->output.tag; | |
| 479 | 599 } |
| 600 | |
| 601 u->request_sent = 0; | |
| 602 | |
| 603 if (rc == NGX_AGAIN) { | |
| 604 ngx_add_timer(c->write, u->conf->connect_timeout); | |
| 605 return; | |
| 606 } | |
| 607 | |
| 577 | 608 #if (NGX_HTTP_SSL) |
| 609 | |
| 591 | 610 if (u->conf->ssl && c->ssl == NULL) { |
| 611 ngx_http_upstream_ssl_init_connection(r, u, c); | |
| 577 | 612 return; |
| 613 } | |
| 614 | |
| 615 #endif | |
| 616 | |
| 479 | 617 ngx_http_upstream_send_request(r, u); |
| 618 } | |
| 619 | |
| 620 | |
| 577 | 621 #if (NGX_HTTP_SSL) |
| 622 | |
| 623 static void | |
| 591 | 624 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r, |
| 625 ngx_http_upstream_t *u, ngx_connection_t *c) | |
| 626 { | |
| 884 | 627 ngx_int_t rc; |
| 591 | 628 |
| 629 if (ngx_ssl_create_connection(u->conf->ssl, c, | |
| 630 NGX_SSL_BUFFER|NGX_SSL_CLIENT) | |
| 631 == NGX_ERROR) | |
| 632 { | |
| 633 ngx_http_upstream_finalize_request(r, u, | |
| 634 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 635 return; | |
| 636 } | |
| 637 | |
| 638 c->sendfile = 0; | |
| 619 | 639 u->output.sendfile = 0; |
| 591 | 640 |
| 884 | 641 if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) { |
| 591 | 642 ngx_http_upstream_finalize_request(r, u, |
| 643 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 644 return; | |
| 645 } | |
| 646 | |
| 641 | 647 r->connection->log->action = "SSL handshaking to upstream"; |
| 648 | |
| 591 | 649 rc = ngx_ssl_handshake(c); |
| 650 | |
| 651 if (rc == NGX_AGAIN) { | |
| 652 c->ssl->handler = ngx_http_upstream_ssl_handshake; | |
| 653 return; | |
| 654 } | |
| 655 | |
| 656 ngx_http_upstream_ssl_handshake(c); | |
| 657 } | |
| 658 | |
| 659 | |
| 660 static void | |
| 577 | 661 ngx_http_upstream_ssl_handshake(ngx_connection_t *c) |
| 662 { | |
| 663 ngx_http_request_t *r; | |
| 664 ngx_http_upstream_t *u; | |
| 665 | |
| 666 r = c->data; | |
| 667 u = r->upstream; | |
| 668 | |
| 669 if (c->ssl->handshaked) { | |
| 670 | |
| 884 | 671 u->peer.save_session(&u->peer, u->peer.data); |
| 672 | |
| 577 | 673 c->write->handler = ngx_http_upstream_send_request_handler; |
| 674 c->read->handler = ngx_http_upstream_process_header; | |
| 675 | |
| 676 ngx_http_upstream_send_request(r, u); | |
| 677 | |
| 678 return; | |
| 679 } | |
| 680 | |
| 681 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 682 | |
| 683 } | |
| 684 | |
| 685 #endif | |
| 686 | |
| 687 | |
| 509 | 688 static ngx_int_t |
| 487 | 689 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u) |
| 479 | 690 { |
| 691 ngx_chain_t *cl; | |
| 692 | |
| 509 | 693 if (u->reinit_request(r) != NGX_OK) { |
| 694 return NGX_ERROR; | |
| 695 } | |
| 696 | |
| 697 ngx_memzero(&r->upstream->headers_in, | |
| 698 sizeof(ngx_http_upstream_headers_in_t)); | |
| 699 | |
| 700 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, | |
| 591 | 701 sizeof(ngx_table_elt_t)) |
| 702 != NGX_OK) | |
| 509 | 703 { |
| 704 return NGX_ERROR; | |
| 479 | 705 } |
| 706 | |
| 707 /* reinit the request chain */ | |
| 577 | 708 |
| 509 | 709 for (cl = u->request_bufs; cl; cl = cl->next) { |
| 479 | 710 cl->buf->pos = cl->buf->start; |
| 711 cl->buf->file_pos = 0; | |
| 712 } | |
| 713 | |
| 509 | 714 /* reinit the subrequest's ngx_output_chain() context */ |
| 715 | |
| 573 | 716 if (r->request_body && r->request_body->temp_file |
| 597 | 717 && r != r->main && u->output.buf) |
| 573 | 718 { |
| 719 u->output.free = ngx_alloc_chain_link(r->pool); | |
| 720 if (u->output.free == NULL) { | |
| 721 return NGX_ERROR; | |
| 509 | 722 } |
| 573 | 723 |
| 724 u->output.free->buf = u->output.buf; | |
| 725 u->output.free->next = NULL; | |
| 726 | |
| 727 u->output.buf->pos = u->output.buf->start; | |
| 728 u->output.buf->last = u->output.buf->start; | |
| 509 | 729 } |
| 479 | 730 |
| 731 u->output.buf = NULL; | |
| 732 u->output.in = NULL; | |
| 733 u->output.busy = NULL; | |
| 577 | 734 |
| 581 | 735 /* reinit u->buffer */ |
| 577 | 736 |
| 479 | 737 #if 0 |
| 738 if (u->cache) { | |
| 581 | 739 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size; |
| 740 u->buffer.last = u->buffer.pos; | |
| 479 | 741 |
| 742 } else { | |
| 581 | 743 u->buffer.pos = u->buffer.start; |
| 744 u->buffer.last = u->buffer.start; | |
| 479 | 745 } |
| 746 #else | |
| 509 | 747 |
| 581 | 748 u->buffer.pos = u->buffer.start; |
| 749 u->buffer.last = u->buffer.start; | |
| 509 | 750 |
| 479 | 751 #endif |
| 752 | |
| 509 | 753 return NGX_OK; |
| 479 | 754 } |
| 755 | |
| 756 | |
| 487 | 757 static void |
| 758 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 479 | 759 { |
| 671 | 760 int rc, err; |
| 761 socklen_t len; | |
| 483 | 762 ngx_connection_t *c; |
| 577 | 763 |
| 479 | 764 c = u->peer.connection; |
| 765 | |
| 766 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 767 "http upstream send request"); | |
| 768 | |
| 671 | 769 if (!u->request_sent) { |
| 770 | |
| 479 | 771 #if (NGX_HAVE_KQUEUE) |
| 772 | |
| 671 | 773 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| 774 if (c->write->pending_eof) { | |
| 775 (void) ngx_connection_error(c, c->write->kq_errno, | |
| 537 | 776 "kevent() reported that connect() failed"); |
| 671 | 777 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); |
| 778 return; | |
| 779 } | |
| 780 | |
| 781 } else | |
| 782 #endif | |
| 783 { | |
| 784 err = 0; | |
| 785 len = sizeof(int); | |
| 786 | |
| 787 /* | |
| 788 * BSDs and Linux return 0 and set a pending error in err | |
| 789 * Solaris returns -1 and sets errno | |
| 790 */ | |
| 791 | |
| 792 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len) | |
| 793 == -1) | |
| 794 { | |
| 795 err = ngx_errno; | |
| 796 } | |
| 797 | |
| 798 if (err) { | |
| 799 (void) ngx_connection_error(c, err, "connect() failed"); | |
| 800 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 801 return; | |
| 802 } | |
| 803 } | |
| 479 | 804 } |
| 805 | |
| 483 | 806 c->log->action = "sending request to upstream"; |
| 479 | 807 |
| 509 | 808 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs); |
| 479 | 809 |
| 810 u->request_sent = 1; | |
| 811 | |
| 812 if (rc == NGX_ERROR) { | |
| 813 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 814 return; | |
| 815 } | |
| 816 | |
| 817 if (c->write->timer_set) { | |
| 818 ngx_del_timer(c->write); | |
| 819 } | |
| 820 | |
| 821 if (rc == NGX_AGAIN) { | |
| 822 ngx_add_timer(c->write, u->conf->send_timeout); | |
| 823 | |
| 824 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR) | |
| 825 { | |
| 826 ngx_http_upstream_finalize_request(r, u, | |
| 827 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 828 return; | |
| 829 } | |
| 830 | |
| 831 return; | |
| 832 } | |
| 833 | |
| 834 /* rc == NGX_OK */ | |
| 835 | |
| 836 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) { | |
| 837 if (ngx_tcp_push(c->fd) == NGX_ERROR) { | |
| 838 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno, | |
| 839 ngx_tcp_push_n " failed"); | |
| 840 ngx_http_upstream_finalize_request(r, u, | |
| 841 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 577 | 842 return; |
| 479 | 843 } |
| 844 | |
| 845 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET; | |
| 846 } | |
| 577 | 847 |
| 479 | 848 ngx_add_timer(c->read, u->conf->read_timeout); |
| 849 | |
| 850 #if 1 | |
| 851 if (c->read->ready) { | |
| 577 | 852 |
| 479 | 853 /* post aio operation */ |
| 854 | |
| 855 /* | |
| 856 * TODO comment | |
| 857 * although we can post aio operation just in the end | |
| 858 * of ngx_http_upstream_connect() CHECK IT !!! | |
| 859 * it's better to do here because we postpone header buffer allocation | |
| 860 */ | |
| 861 | |
| 862 ngx_http_upstream_process_header(c->read); | |
| 863 return; | |
| 864 } | |
| 865 #endif | |
| 866 | |
| 509 | 867 c->write->handler = ngx_http_upstream_dummy_handler; |
| 479 | 868 |
| 509 | 869 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) { |
| 479 | 870 ngx_http_upstream_finalize_request(r, u, |
| 871 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 872 return; | |
| 873 } | |
| 874 } | |
| 875 | |
| 876 | |
| 487 | 877 static void |
| 878 ngx_http_upstream_send_request_handler(ngx_event_t *wev) | |
| 479 | 879 { |
| 880 ngx_connection_t *c; | |
| 881 ngx_http_request_t *r; | |
| 882 ngx_http_upstream_t *u; | |
| 883 | |
| 884 c = wev->data; | |
| 885 r = c->data; | |
| 886 u = r->upstream; | |
| 887 | |
| 888 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
| 889 "http upstream send request handler"); | |
| 890 | |
| 891 if (wev->timedout) { | |
| 892 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
| 893 return; | |
| 894 } | |
| 895 | |
| 591 | 896 #if (NGX_HTTP_SSL) |
| 897 | |
| 898 if (u->conf->ssl && c->ssl == NULL) { | |
| 899 ngx_http_upstream_ssl_init_connection(r, u, c); | |
| 900 return; | |
| 901 } | |
| 902 | |
| 903 #endif | |
| 904 | |
| 651 | 905 if (u->header_sent) { |
| 906 wev->handler = ngx_http_upstream_dummy_handler; | |
| 907 | |
| 908 (void) ngx_handle_write_event(wev, 0); | |
| 909 | |
| 910 return; | |
| 911 } | |
| 912 | |
| 479 | 913 ngx_http_upstream_send_request(r, u); |
| 914 } | |
| 915 | |
| 916 | |
| 487 | 917 static void |
| 918 ngx_http_upstream_process_header(ngx_event_t *rev) | |
| 479 | 919 { |
| 515 | 920 ssize_t n; |
| 921 ngx_int_t rc; | |
| 573 | 922 ngx_str_t *uri, args; |
| 649 | 923 ngx_uint_t i, flags; |
| 515 | 924 ngx_list_part_t *part; |
| 925 ngx_table_elt_t *h; | |
| 926 ngx_connection_t *c; | |
| 927 ngx_http_request_t *r; | |
| 928 ngx_http_upstream_t *u; | |
| 929 ngx_http_err_page_t *err_page; | |
| 930 ngx_http_core_loc_conf_t *clcf; | |
| 931 ngx_http_upstream_header_t *hh; | |
| 932 ngx_http_upstream_main_conf_t *umcf; | |
| 479 | 933 |
| 934 c = rev->data; | |
| 935 r = c->data; | |
| 936 u = r->upstream; | |
| 937 | |
| 938 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, | |
| 483 | 939 "http upstream process header"); |
| 479 | 940 |
| 483 | 941 c->log->action = "reading response header from upstream"; |
| 479 | 942 |
| 943 if (rev->timedout) { | |
| 944 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT); | |
| 945 return; | |
| 946 } | |
| 577 | 947 |
| 581 | 948 if (u->buffer.start == NULL) { |
| 949 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size); | |
| 950 if (u->buffer.start == NULL) { | |
| 479 | 951 ngx_http_upstream_finalize_request(r, u, |
| 952 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 953 return; | |
| 954 } | |
| 955 | |
| 581 | 956 u->buffer.pos = u->buffer.start; |
| 957 u->buffer.last = u->buffer.start; | |
| 958 u->buffer.end = u->buffer.start + u->conf->buffer_size; | |
| 959 u->buffer.temporary = 1; | |
| 960 | |
| 961 u->buffer.tag = u->output.tag; | |
| 479 | 962 |
| 509 | 963 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8, |
| 581 | 964 sizeof(ngx_table_elt_t)) |
| 965 != NGX_OK) | |
| 509 | 966 { |
| 967 ngx_http_upstream_finalize_request(r, u, | |
| 968 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 969 return; | |
| 970 } | |
| 971 | |
| 479 | 972 #if 0 |
| 973 if (u->cache) { | |
| 581 | 974 u->buffer.pos += u->cache->ctx.header_size; |
| 975 u->buffer.last = u->buffer.pos; | |
| 479 | 976 } |
| 977 #endif | |
| 978 } | |
| 979 | |
| 581 | 980 n = u->peer.connection->recv(u->peer.connection, u->buffer.last, |
| 884 | 981 u->buffer.end - u->buffer.last); |
| 479 | 982 |
| 983 if (n == NGX_AGAIN) { | |
| 984 #if 0 | |
| 985 ngx_add_timer(rev, u->read_timeout); | |
| 986 #endif | |
| 987 | |
| 988 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 989 ngx_http_upstream_finalize_request(r, u, | |
| 990 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 991 return; | |
| 992 } | |
| 993 | |
| 994 return; | |
| 995 } | |
| 996 | |
| 997 if (n == 0) { | |
| 998 ngx_log_error(NGX_LOG_ERR, rev->log, 0, | |
| 999 "upstream prematurely closed connection"); | |
| 1000 } | |
| 1001 | |
| 1002 if (n == NGX_ERROR || n == 0) { | |
| 1003 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); | |
| 1004 return; | |
| 1005 } | |
| 1006 | |
| 581 | 1007 u->buffer.last += n; |
| 479 | 1008 |
| 1009 #if 0 | |
| 1010 u->valid_header_in = 0; | |
| 1011 | |
| 1012 u->peer.cached = 0; | |
| 1013 #endif | |
| 1014 | |
| 1015 rc = u->process_header(r); | |
| 1016 | |
| 1017 if (rc == NGX_AGAIN) { | |
| 1018 #if 0 | |
| 1019 ngx_add_timer(rev, u->read_timeout); | |
| 1020 #endif | |
| 1021 | |
| 581 | 1022 if (u->buffer.pos == u->buffer.end) { |
| 479 | 1023 ngx_log_error(NGX_LOG_ERR, rev->log, 0, |
| 1024 "upstream sent too big header"); | |
| 1025 | |
| 1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
| 1027 return; | |
| 1028 } | |
| 1029 | |
| 1030 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { | |
| 1031 ngx_http_upstream_finalize_request(r, u, | |
| 1032 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1033 return; | |
| 1034 } | |
| 1035 | |
| 1036 return; | |
| 1037 } | |
| 1038 | |
| 1039 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) { | |
| 1040 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER); | |
| 1041 return; | |
| 1042 } | |
| 1043 | |
| 1044 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { | |
| 1045 ngx_http_upstream_finalize_request(r, u, | |
| 1046 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1047 return; | |
| 1048 } | |
| 1049 | |
| 1050 /* rc == NGX_OK */ | |
| 1051 | |
|
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1052 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
|
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1053 && r->subrequest_in_memory) |
|
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|
1054 { |
|
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|
1055 u->buffer.last = u->buffer.pos; |
|
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|
1056 } |
|
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|
1057 |
| 529 | 1058 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) { |
| 509 | 1059 |
| 1060 if (u->peer.tries > 1 | |
| 1061 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
| 1062 { | |
| 1063 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500); | |
| 1064 return; | |
| 1065 } | |
| 1066 | |
| 1067 #if (NGX_HTTP_CACHE) | |
| 1068 | |
| 1069 if (u->peer.tries == 0 | |
| 1070 && u->stale | |
| 1071 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500)) | |
| 1072 { | |
| 1073 ngx_http_upstream_finalize_request(r, u, | |
| 529 | 1074 ngx_http_send_cached_response(r)); |
| 509 | 1075 return; |
| 1076 } | |
| 1077 | |
| 1078 #endif | |
| 1079 } | |
| 1080 | |
| 597 | 1081 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) { |
| 1082 | |
| 1083 if (u->peer.tries > 1 | |
| 1084 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404) | |
| 1085 { | |
| 1086 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404); | |
| 1087 return; | |
| 1088 } | |
| 1089 | |
| 675 | 1090 if (u->conf->intercept_404) { |
| 1091 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND); | |
| 597 | 1092 return; |
| 1093 } | |
| 509 | 1094 } |
| 1095 | |
| 1096 | |
| 529 | 1097 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST |
| 675 | 1098 && u->conf->intercept_errors) |
| 487 | 1099 { |
| 1100 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 1101 | |
| 1102 if (clcf->error_pages) { | |
| 1103 | |
| 1104 err_page = clcf->error_pages->elts; | |
| 1105 for (i = 0; i < clcf->error_pages->nelts; i++) { | |
| 529 | 1106 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) { |
| 1107 | |
| 1108 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) { | |
| 1109 | |
| 1110 r->headers_out.www_authenticate = | |
| 1111 ngx_list_push(&r->headers_out.headers); | |
| 1112 | |
| 1113 if (r->headers_out.www_authenticate == NULL) { | |
| 1114 ngx_http_upstream_finalize_request(r, u, | |
| 1115 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1116 return; | |
| 1117 } | |
| 1118 | |
| 577 | 1119 *r->headers_out.www_authenticate = |
| 529 | 1120 *u->headers_in.www_authenticate; |
| 1121 } | |
| 1122 | |
| 487 | 1123 ngx_http_upstream_finalize_request(r, u, |
| 529 | 1124 u->headers_in.status_n); |
| 487 | 1125 return; |
| 1126 } | |
| 1127 } | |
| 1128 } | |
| 1129 } | |
| 1130 | |
| 681 | 1131 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); |
| 1132 | |
| 515 | 1133 if (r->upstream->headers_in.x_accel_redirect) { |
|
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|
1134 |
| 515 | 1135 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED); |
| 1136 | |
| 1137 part = &r->upstream->headers_in.headers.part; | |
| 1138 h = part->elts; | |
| 1139 | |
| 1140 for (i = 0; /* void */; i++) { | |
| 1141 | |
| 1142 if (i >= part->nelts) { | |
| 1143 if (part->next == NULL) { | |
| 1144 break; | |
| 1145 } | |
| 577 | 1146 |
| 515 | 1147 part = part->next; |
| 1148 h = part->elts; | |
| 1149 i = 0; | |
| 1150 } | |
| 1151 | |
| 649 | 1152 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, |
| 1153 h[i].lowcase_key, h[i].key.len); | |
| 1154 | |
| 1155 if (hh && hh->redirect) { | |
| 1156 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
|
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1157 ngx_http_finalize_request(r, |
|
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|
1158 NGX_HTTP_INTERNAL_SERVER_ERROR); |
| 515 | 1159 return; |
| 1160 } | |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 573 | 1164 uri = &r->upstream->headers_in.x_accel_redirect->value; |
| 1165 args.len = 0; | |
| 1166 args.data = NULL; | |
| 1167 flags = 0; | |
| 1168 | |
| 1169 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) { | |
|
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|
1170 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND); |
| 573 | 1171 return; |
| 1172 } | |
| 1173 | |
| 1174 if (flags & NGX_HTTP_ZERO_IN_URI) { | |
| 1175 r->zero_in_uri = 1; | |
| 1176 } | |
| 1177 | |
| 653 | 1178 if (r->method != NGX_HTTP_HEAD) { |
| 1179 r->method = NGX_HTTP_GET; | |
| 1180 } | |
| 1181 | |
| 573 | 1182 ngx_http_internal_redirect(r, uri, &args); |
| 515 | 1183 return; |
| 1184 } | |
| 1185 | |
| 509 | 1186 part = &r->upstream->headers_in.headers.part; |
| 1187 h = part->elts; | |
| 1188 | |
| 1189 for (i = 0; /* void */; i++) { | |
| 479 | 1190 |
| 509 | 1191 if (i >= part->nelts) { |
| 1192 if (part->next == NULL) { | |
| 1193 break; | |
| 1194 } | |
| 577 | 1195 |
| 509 | 1196 part = part->next; |
| 1197 h = part->elts; | |
| 1198 i = 0; | |
| 1199 } | |
| 1200 | |
| 649 | 1201 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash, |
| 1202 h[i].lowcase_key, h[i].key.len)) | |
| 509 | 1203 { |
| 649 | 1204 continue; |
| 1205 } | |
| 1206 | |
| 1207 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash, | |
| 1208 h[i].lowcase_key, h[i].key.len); | |
| 1209 | |
| 1210 if (hh) { | |
| 1211 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) { | |
| 509 | 1212 ngx_http_upstream_finalize_request(r, u, |
| 1213 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1214 return; | |
| 1215 } | |
| 1216 | |
| 1217 continue; | |
| 1218 } | |
| 1219 | |
| 1220 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) { | |
| 1221 ngx_http_upstream_finalize_request(r, u, | |
| 1222 NGX_HTTP_INTERNAL_SERVER_ERROR); | |
| 1223 return; | |
| 1224 } | |
| 1225 } | |
| 1226 | |
| 649 | 1227 if (r->headers_out.server && r->headers_out.server->value.data == NULL) { |
| 1228 r->headers_out.server->hash = 0; | |
| 1229 } | |
| 1230 | |
| 1231 if (r->headers_out.date && r->headers_out.date->value.data == NULL) { | |
| 1232 r->headers_out.date->hash = 0; | |
| 1233 } | |
| 1234 | |
| 529 | 1235 r->headers_out.status = u->headers_in.status_n; |
| 1236 r->headers_out.status_line = u->headers_in.status_line; | |
| 1237 | |
| 581 | 1238 if (r->headers_out.content_length_n != -1) { |
| 1239 u->length = (size_t) r->headers_out.content_length_n; | |
| 1240 | |
| 1241 } else { | |
| 1242 u->length = NGX_MAX_SIZE_T_VALUE; | |
| 1243 } | |
| 1244 | |
|
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|
1245 if (!r->subrequest_in_memory) { |
|
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diff
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|
1246 ngx_http_upstream_send_response(r, u); |
|
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|
1247 return; |
|
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diff
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|
1248 } |
|
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diff
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|
1249 |
|
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|
1250 /* subrequest content in memory */ |
|
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|
1251 |
|
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|
1252 if (u->input_filter == NULL) { |
|
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diff
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|
1253 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; |
|
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diff
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|
1254 u->input_filter = ngx_http_upstream_non_buffered_filter; |
|
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|
1255 u->input_filter_ctx = r; |
|
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diff
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|
1256 } |
|
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|
1257 |
|
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diff
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|
1258 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { |
|
4ab852b691f5
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diff
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|
1259 ngx_http_upstream_finalize_request(r, u, |
|
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|
1260 NGX_HTTP_INTERNAL_SERVER_ERROR); |
|
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|
1261 return; |
|
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|
1262 } |
|
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|
1263 |
|
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|
1264 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) { |
|
4ab852b691f5
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|
1265 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) { |
|
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|
1266 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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|
1267 return; |
|
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|
1268 } |
|
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|
1269 |
|
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|
1270 ngx_http_upstream_finalize_request(r, u, 0); |
|
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|
1271 return; |
|
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|
1272 } |
|
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|
1273 |
|
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|
1274 rev->handler = ngx_http_upstream_process_body_in_memory; |
|
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|
1275 |
|
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|
1276 ngx_http_upstream_process_body_in_memory(rev); |
|
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|
1277 } |
|
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|
1278 |
|
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|
1279 |
|
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|
1280 static void |
|
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|
1281 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev) |
|
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|
1282 { |
|
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|
1283 size_t size; |
|
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1284 ssize_t n; |
|
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|
1285 ngx_buf_t *b; |
|
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|
1286 ngx_connection_t *c; |
|
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|
1287 ngx_http_request_t *r; |
|
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|
1288 ngx_http_upstream_t *u; |
|
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|
1289 |
|
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|
1290 c = rev->data; |
|
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|
1291 r = c->data; |
|
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|
1292 u = r->upstream; |
|
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|
1293 |
|
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|
1294 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
|
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|
1295 "http upstream process body on memory"); |
|
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1296 |
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1297 if (rev->timedout) { |
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1298 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
|
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1299 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT); |
|
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1300 return; |
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1301 } |
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1302 |
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1303 b = &u->buffer; |
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1304 |
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1305 for ( ;; ) { |
|
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1306 |
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1307 size = b->end - b->last; |
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1308 |
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1309 if (size == 0) { |
|
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1310 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
|
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1311 "upstream buffer is too small to read repsonse"); |
|
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1312 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1313 return; |
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1314 } |
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1315 |
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1316 n = c->recv(c, b->last, size); |
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1317 |
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1318 if (n == NGX_AGAIN) { |
|
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1319 break; |
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1320 } |
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1321 |
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1322 if (n == 0 || n == NGX_ERROR) { |
|
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1323 ngx_http_upstream_finalize_request(r, u, n); |
|
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1324 return; |
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1325 } |
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1326 |
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1327 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { |
|
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1328 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1329 return; |
|
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1330 } |
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1331 |
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1332 if (!rev->ready) { |
|
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1333 break; |
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1334 } |
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1335 } |
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1336 |
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1337 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) { |
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1338 ngx_http_upstream_finalize_request(r, u, NGX_ERROR); |
|
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1339 return; |
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1340 } |
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1341 |
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1342 if (rev->active) { |
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1343 ngx_add_timer(rev, u->conf->read_timeout); |
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1344 |
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1345 } else if (rev->timer_set) { |
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1346 ngx_del_timer(rev); |
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1347 } |
| 681 | 1348 } |
| 1349 | |
| 1350 | |
| 1351 static void | |
| 1352 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u) | |
| 1353 { | |
| 1354 int tcp_nodelay; | |
| 1355 ssize_t size; | |
| 1356 ngx_int_t rc; | |
| 1357 ngx_event_pipe_t *p; | |
| 1358 ngx_connection_t *c; | |
| 1359 ngx_pool_cleanup_t *cl; | |
| 1360 ngx_pool_cleanup_file_t *clf; | |
| 1361 ngx_http_core_loc_conf_t *clcf; | |
| 1362 | |
| 509 | 1363 rc = ngx_http_send_header(r); |
| 479 | 1364 |
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1365 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) { |
| 485 | 1366 ngx_http_upstream_finalize_request(r, u, rc); |
| 479 | 1367 return; |
| 1368 } | |
| 1369 | |
| 1370 u->header_sent = 1; | |
| 1371 | |
| 573 | 1372 if (r->request_body && r->request_body->temp_file) { |
| 563 | 1373 for (cl = r->pool->cleanup; cl; cl = cl->next) { |
| 1374 if (cl->handler == ngx_pool_cleanup_file) { | |
| 1375 clf = cl->data; | |
| 1376 | |
| 1377 if (clf->fd == r->request_body->temp_file->file.fd) { | |
| 1378 cl->handler(clf); | |
| 1379 cl->handler = NULL; | |
| 659 | 1380 r->request_body->temp_file->file.fd = NGX_INVALID_FILE; |
| 563 | 1381 break; |
| 1382 } | |
| 1383 } | |
| 1384 } | |
| 1385 } | |
| 1386 | |
| 583 | 1387 c = r->connection; |
| 1388 | |
| 581 | 1389 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| 1390 | |
| 649 | 1391 if (!u->buffering) { |
| 581 | 1392 |
| 1393 if (u->input_filter == NULL) { | |
| 1394 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init; | |
| 1395 u->input_filter = ngx_http_upstream_non_buffered_filter; | |
| 1396 u->input_filter_ctx = r; | |
| 1397 } | |
| 1398 | |
| 1399 u->peer.connection->read->handler = | |
| 1400 ngx_http_upstream_process_non_buffered_body; | |
| 1401 r->write_event_handler = | |
| 1402 ngx_http_upstream_process_non_buffered_downstream; | |
| 1403 | |
| 1404 r->limit_rate = 0; | |
| 1405 | |
| 1406 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) { | |
| 1407 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1408 return; | |
| 1409 } | |
| 1410 | |
| 583 | 1411 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) { |
| 1412 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay"); | |
| 1413 | |
| 1414 tcp_nodelay = 1; | |
| 1415 | |
| 1416 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY, | |
| 1417 (const void *) &tcp_nodelay, sizeof(int)) == -1) | |
| 1418 { | |
| 1419 ngx_connection_error(c, ngx_socket_errno, | |
| 1420 "setsockopt(TCP_NODELAY) failed"); | |
| 1421 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1422 return; | |
| 1423 } | |
| 1424 | |
| 1425 c->tcp_nodelay = NGX_TCP_NODELAY_SET; | |
| 1426 } | |
| 1427 | |
| 581 | 1428 size = u->buffer.last - u->buffer.pos; |
| 1429 | |
| 1430 if (size) { | |
| 1431 u->buffer.last = u->buffer.pos; | |
| 1432 | |
| 1433 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) { | |
| 1434 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1435 return; | |
| 1436 } | |
| 1437 | |
| 583 | 1438 ngx_http_upstream_process_non_buffered_body(c->write); |
| 581 | 1439 |
| 1440 } else { | |
| 1441 u->buffer.pos = u->buffer.start; | |
| 1442 u->buffer.last = u->buffer.start; | |
| 1443 | |
| 1444 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) { | |
| 1445 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1446 return; | |
| 1447 } | |
| 1448 } | |
| 1449 | |
| 1450 return; | |
| 1451 } | |
| 1452 | |
| 479 | 1453 /* TODO: preallocate event_pipe bufs, look "Content-Length" */ |
| 1454 | |
| 1455 #if 0 | |
| 1456 | |
| 1457 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) { | |
| 1458 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) { | |
| 583 | 1459 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
| 479 | 1460 ngx_close_file_n " \"%s\" failed", |
| 1461 u->cache->ctx.file.name.data); | |
| 1462 } | |
| 1463 } | |
| 1464 | |
| 1465 if (u->cachable) { | |
| 581 | 1466 header = (ngx_http_cache_header_t *) u->buffer->start; |
| 479 | 1467 |
| 1468 header->expires = u->cache->ctx.expires; | |
| 1469 header->last_modified = u->cache->ctx.last_modified; | |
| 1470 header->date = u->cache->ctx.date; | |
| 1471 header->length = r->headers_out.content_length_n; | |
| 1472 u->cache->ctx.length = r->headers_out.content_length_n; | |
| 1473 | |
| 1474 header->key_len = u->cache->ctx.key0.len; | |
| 1475 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len); | |
| 1476 header->key[header->key_len] = LF; | |
| 1477 } | |
| 1478 | |
| 1479 #endif | |
| 1480 | |
| 581 | 1481 p = u->pipe; |
| 479 | 1482 |
| 1483 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter; | |
| 1484 p->output_ctx = r; | |
| 1485 p->tag = u->output.tag; | |
| 577 | 1486 p->bufs = u->conf->bufs; |
| 479 | 1487 p->busy_size = u->conf->busy_buffers_size; |
| 1488 p->upstream = u->peer.connection; | |
| 583 | 1489 p->downstream = c; |
| 479 | 1490 p->pool = r->pool; |
| 583 | 1491 p->log = c->log; |
| 577 | 1492 |
| 479 | 1493 p->cachable = u->cachable; |
| 1494 | |
| 501 | 1495 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
| 1496 if (p->temp_file == NULL) { | |
| 479 | 1497 ngx_http_upstream_finalize_request(r, u, 0); |
| 1498 return; | |
| 1499 } | |
| 1500 | |
| 1501 p->temp_file->file.fd = NGX_INVALID_FILE; | |
| 583 | 1502 p->temp_file->file.log = c->log; |
| 479 | 1503 p->temp_file->path = u->conf->temp_path; |
| 1504 p->temp_file->pool = r->pool; | |
| 577 | 1505 |
| 479 | 1506 if (u->cachable) { |
| 1507 p->temp_file->persistent = 1; | |
| 1508 } else { | |
| 667 | 1509 p->temp_file->log_level = NGX_LOG_WARN; |
| 479 | 1510 p->temp_file->warn = "an upstream response is buffered " |
| 1511 "to a temporary file"; | |
| 1512 } | |
| 1513 | |
| 1514 p->max_temp_file_size = u->conf->max_temp_file_size; | |
| 1515 p->temp_file_write_size = u->conf->temp_file_write_size; | |
| 1516 | |
| 501 | 1517 p->preread_bufs = ngx_alloc_chain_link(r->pool); |
| 1518 if (p->preread_bufs == NULL) { | |
| 479 | 1519 ngx_http_upstream_finalize_request(r, u, 0); |
| 1520 return; | |
| 1521 } | |
| 581 | 1522 p->preread_bufs->buf = &u->buffer; |
| 479 | 1523 p->preread_bufs->next = NULL; |
| 581 | 1524 u->buffer.recycled = 1; |
| 1525 | |
| 1526 p->preread_size = u->buffer.last - u->buffer.pos; | |
| 479 | 1527 |
| 1528 if (u->cachable) { | |
| 1529 p->buf_to_file = ngx_calloc_buf(r->pool); | |
| 1530 if (p->buf_to_file == NULL) { | |
| 1531 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1532 return; | |
| 1533 } | |
| 581 | 1534 p->buf_to_file->pos = u->buffer.start; |
| 1535 p->buf_to_file->last = u->buffer.pos; | |
| 479 | 1536 p->buf_to_file->temporary = 1; |
| 1537 } | |
| 1538 | |
| 1539 if (ngx_event_flags & NGX_USE_AIO_EVENT) { | |
| 1540 /* the posted aio operation may currupt a shadow buffer */ | |
| 1541 p->single_buf = 1; | |
| 1542 } | |
| 1543 | |
| 1544 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */ | |
| 1545 p->free_bufs = 1; | |
| 1546 | |
| 1547 /* | |
| 581 | 1548 * event_pipe would do u->buffer.last += p->preread_size |
| 479 | 1549 * as though these bytes were read |
| 1550 */ | |
| 581 | 1551 u->buffer.last = u->buffer.pos; |
| 479 | 1552 |
| 1553 if (u->conf->cyclic_temp_file) { | |
| 1554 | |
| 1555 /* | |
| 1556 * we need to disable the use of sendfile() if we use cyclic temp file | |
| 1557 * because the writing a new data may interfere with sendfile() | |
| 1558 * that uses the same kernel file pages (at least on FreeBSD) | |
| 1559 */ | |
| 1560 | |
| 1561 p->cyclic_temp_file = 1; | |
| 583 | 1562 c->sendfile = 0; |
| 479 | 1563 |
| 1564 } else { | |
| 1565 p->cyclic_temp_file = 0; | |
| 1566 } | |
| 1567 | |
| 1568 p->read_timeout = u->conf->read_timeout; | |
| 1569 p->send_timeout = clcf->send_timeout; | |
| 1570 p->send_lowat = clcf->send_lowat; | |
| 1571 | |
| 509 | 1572 u->peer.connection->read->handler = ngx_http_upstream_process_body; |
| 1573 r->write_event_handler = ngx_http_upstream_process_downstream; | |
| 479 | 1574 |
| 1575 ngx_http_upstream_process_body(u->peer.connection->read); | |
| 1576 } | |
| 1577 | |
| 1578 | |
| 487 | 1579 static void |
| 581 | 1580 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r) |
| 1581 { | |
| 1582 ngx_http_upstream_process_non_buffered_body(r->connection->write); | |
| 1583 } | |
| 1584 | |
| 1585 | |
| 1586 static void | |
| 1587 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev) | |
| 1588 { | |
| 1589 size_t size; | |
| 1590 ssize_t n; | |
| 1591 ngx_buf_t *b; | |
| 583 | 1592 ngx_int_t rc; |
| 581 | 1593 ngx_uint_t do_write; |
| 884 | 1594 ngx_connection_t *c, *downstream, *upstream; |
| 581 | 1595 ngx_http_request_t *r; |
| 1596 ngx_http_upstream_t *u; | |
| 1597 ngx_http_core_loc_conf_t *clcf; | |
| 1598 | |
| 1599 c = ev->data; | |
|
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1600 r = c->data; |
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1601 u = r->upstream; |
| 581 | 1602 |
| 1603 if (ev->write) { | |
| 1604 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1605 "http upstream process non buffered downstream"); | |
| 1606 c->log->action = "sending to client"; | |
| 1607 | |
| 1608 } else { | |
| 1609 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1610 "http upstream process non buffered upstream"); | |
| 1611 c->log->action = "reading upstream"; | |
| 1612 } | |
| 1613 | |
| 1614 if (ev->timedout) { | |
| 1615 if (ev->write) { | |
| 1616 c->timedout = 1; | |
| 611 | 1617 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
| 1618 | |
| 581 | 1619 } else { |
| 611 | 1620 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
| 581 | 1621 } |
|
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1622 |
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1623 ngx_http_upstream_finalize_request(r, u, 0); |
|
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1624 return; |
| 581 | 1625 } |
| 1626 | |
| 884 | 1627 downstream = r->connection; |
| 1628 upstream = u->peer.connection; | |
| 581 | 1629 |
| 1630 b = &u->buffer; | |
| 1631 | |
| 1632 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
| 1633 | |
| 657 | 1634 do_write = ev->write || u->length == 0; |
| 581 | 1635 |
| 1636 for ( ;; ) { | |
| 1637 | |
| 1638 if (do_write) { | |
| 1639 | |
| 1640 if (u->out_bufs || u->busy_bufs) { | |
| 583 | 1641 rc = ngx_http_output_filter(r, u->out_bufs); |
| 1642 | |
| 884 | 1643 if (downstream->destroyed) { |
| 583 | 1644 return; |
| 1645 } | |
| 1646 | |
| 1647 if (rc == NGX_ERROR) { | |
| 581 | 1648 ngx_http_upstream_finalize_request(r, u, 0); |
| 1649 return; | |
| 1650 } | |
| 1651 | |
| 1652 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs, | |
| 1653 &u->out_bufs, u->output.tag); | |
| 1654 } | |
| 1655 | |
| 1656 if (u->busy_bufs == NULL) { | |
| 1657 | |
| 1658 if (u->length == 0 | |
| 884 | 1659 || upstream->read->eof |
| 1660 || upstream->read->error) | |
| 581 | 1661 { |
| 1662 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1663 return; | |
| 1664 } | |
| 1665 | |
| 1666 b->pos = b->start; | |
| 1667 b->last = b->start; | |
| 1668 } | |
| 1669 } | |
| 1670 | |
| 1671 size = b->end - b->last; | |
| 1672 | |
| 1673 if (size > u->length) { | |
| 1674 size = u->length; | |
| 1675 } | |
| 1676 | |
| 884 | 1677 if (size && upstream->read->ready) { |
| 1678 | |
| 1679 n = upstream->recv(upstream, b->last, size); | |
| 581 | 1680 |
| 1681 if (n == NGX_AGAIN) { | |
| 1682 break; | |
| 1683 } | |
| 1684 | |
| 1685 if (n > 0) { | |
| 1686 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) { | |
| 1687 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1688 return; | |
| 1689 } | |
| 1690 } | |
| 1691 | |
| 1692 do_write = 1; | |
| 1693 | |
| 1694 continue; | |
| 1695 } | |
| 1696 | |
| 1697 break; | |
| 1698 } | |
| 1699 | |
| 884 | 1700 if (downstream->data == r) { |
| 1701 if (ngx_handle_write_event(downstream->write, clcf->send_lowat) | |
| 583 | 1702 == NGX_ERROR) |
| 1703 { | |
| 1704 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1705 return; | |
| 1706 } | |
| 581 | 1707 } |
| 1708 | |
|
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1709 if (downstream->write->active && !downstream->write->ready) { |
| 884 | 1710 ngx_add_timer(downstream->write, clcf->send_timeout); |
| 1711 | |
| 1712 } else if (downstream->write->timer_set) { | |
| 1713 ngx_del_timer(downstream->write); | |
| 581 | 1714 } |
| 1715 | |
| 884 | 1716 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) { |
| 581 | 1717 ngx_http_upstream_finalize_request(r, u, 0); |
| 1718 return; | |
| 1719 } | |
| 1720 | |
|
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|
1721 if (upstream->read->active && !upstream->read->ready) { |
| 884 | 1722 ngx_add_timer(upstream->read, u->conf->read_timeout); |
| 1723 | |
| 1724 } else if (upstream->read->timer_set) { | |
| 1725 ngx_del_timer(upstream->read); | |
| 581 | 1726 } |
| 1727 } | |
| 1728 | |
| 1729 | |
| 1730 static ngx_int_t | |
| 1731 ngx_http_upstream_non_buffered_filter_init(void *data) | |
| 1732 { | |
| 1733 return NGX_OK; | |
| 1734 } | |
| 1735 | |
| 1736 | |
| 1737 static ngx_int_t | |
| 1738 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes) | |
| 1739 { | |
| 1740 ngx_http_request_t *r = data; | |
| 1741 | |
| 1742 ngx_buf_t *b; | |
| 1743 ngx_chain_t *cl, **ll; | |
| 1744 ngx_http_upstream_t *u; | |
| 1745 | |
| 1746 u = r->upstream; | |
| 1747 | |
| 1748 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 1749 ll = &cl->next; | |
| 1750 } | |
| 1751 | |
| 1752 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
| 1753 if (cl == NULL) { | |
| 1754 return NGX_ERROR; | |
| 1755 } | |
| 1756 | |
| 1757 *ll = cl; | |
| 1758 | |
| 1759 cl->buf->flush = 1; | |
| 1760 cl->buf->memory = 1; | |
| 1761 | |
| 1762 b = &u->buffer; | |
| 1763 | |
| 1764 cl->buf->pos = b->last; | |
| 1765 b->last += bytes; | |
| 1766 cl->buf->last = b->last; | |
| 1767 | |
| 1768 if (u->length == NGX_MAX_SIZE_T_VALUE) { | |
| 1769 return NGX_OK; | |
| 1770 } | |
| 1771 | |
| 1772 u->length -= bytes; | |
| 1773 | |
| 1774 return NGX_OK; | |
| 1775 } | |
| 1776 | |
| 1777 | |
| 1778 static void | |
| 509 | 1779 ngx_http_upstream_process_downstream(ngx_http_request_t *r) |
| 1780 { | |
| 1781 ngx_http_upstream_process_body(r->connection->write); | |
| 1782 } | |
| 1783 | |
| 1784 | |
| 1785 static void | |
| 487 | 1786 ngx_http_upstream_process_body(ngx_event_t *ev) |
| 479 | 1787 { |
| 509 | 1788 ngx_event_pipe_t *p; |
| 583 | 1789 ngx_connection_t *c, *downstream; |
| 1098 | 1790 ngx_http_log_ctx_t *ctx; |
| 479 | 1791 ngx_http_request_t *r; |
| 1792 ngx_http_upstream_t *u; | |
| 1793 | |
| 1794 c = ev->data; | |
| 1795 r = c->data; | |
| 1796 u = r->upstream; | |
| 583 | 1797 downstream = r->connection; |
| 479 | 1798 |
| 1799 if (ev->write) { | |
| 483 | 1800 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1801 "http upstream process downstream"); | |
| 1802 c->log->action = "sending to client"; | |
| 577 | 1803 |
| 479 | 1804 } else { |
| 483 | 1805 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1806 "http upstream process upstream"); | |
| 1807 c->log->action = "reading upstream"; | |
| 1098 | 1808 |
| 1809 ctx = c->log->data; | |
| 1810 ctx->current_request = r; | |
| 479 | 1811 } |
| 577 | 1812 |
| 581 | 1813 p = u->pipe; |
| 479 | 1814 |
| 1815 if (ev->timedout) { | |
| 1816 if (ev->write) { | |
| 527 | 1817 if (ev->delayed) { |
| 1818 | |
| 1819 ev->timedout = 0; | |
| 1820 ev->delayed = 0; | |
| 1821 | |
| 1822 if (!ev->ready) { | |
| 1823 ngx_add_timer(ev, p->send_timeout); | |
| 1824 | |
| 1825 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) | |
| 1826 { | |
| 1827 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1828 return; | |
| 1829 } | |
| 1830 | |
| 1831 return; | |
| 1832 } | |
| 1833 | |
| 1834 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { | |
| 583 | 1835 |
| 1836 if (downstream->destroyed) { | |
| 1837 return; | |
| 1838 } | |
| 1839 | |
| 527 | 1840 ngx_http_upstream_finalize_request(r, u, 0); |
| 1841 return; | |
| 1842 } | |
| 1843 | |
| 1844 } else { | |
| 1845 p->downstream_error = 1; | |
| 577 | 1846 c->timedout = 1; |
| 611 | 1847 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out"); |
| 527 | 1848 } |
| 479 | 1849 |
| 1850 } else { | |
| 577 | 1851 p->upstream_error = 1; |
| 611 | 1852 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out"); |
| 479 | 1853 } |
| 1854 | |
| 1855 } else { | |
| 527 | 1856 if (ev->write && ev->delayed) { |
| 1857 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 1858 "http downstream delayed"); | |
| 1859 | |
| 1860 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) { | |
| 1861 return; | |
| 1862 } | |
| 1863 | |
| 1864 return; | |
| 1865 } | |
| 1866 | |
| 479 | 1867 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) { |
| 583 | 1868 |
| 1869 if (downstream->destroyed) { | |
| 1870 return; | |
| 1871 } | |
| 1872 | |
| 479 | 1873 ngx_http_upstream_finalize_request(r, u, 0); |
| 1874 return; | |
| 1875 } | |
| 1876 } | |
| 577 | 1877 |
| 479 | 1878 if (u->peer.connection) { |
| 1879 | |
| 1880 #if (NGX_HTTP_FILE_CACHE) | |
| 1881 | |
| 1882 if (p->upstream_done && u->cachable) { | |
| 1883 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
| 1884 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1885 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1886 return; | |
| 1887 } | |
| 1888 | |
| 1889 } else if (p->upstream_eof && u->cachable) { | |
| 1890 | |
| 1891 /* TODO: check length & update cache */ | |
| 1892 | |
| 1893 if (ngx_http_cache_update(r) == NGX_ERROR) { | |
| 1894 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1895 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1896 return; | |
| 1897 } | |
| 1898 } | |
| 1899 | |
| 1900 #endif | |
| 1901 | |
| 1902 if (p->upstream_done || p->upstream_eof || p->upstream_error) { | |
| 483 | 1903 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1904 "http upstream exit: %p", p->out); | |
| 479 | 1905 #if 0 |
| 1906 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1907 #endif | |
| 1908 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1909 return; | |
| 1910 } | |
| 1911 } | |
| 1912 | |
| 1913 if (p->downstream_error) { | |
| 483 | 1914 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 1915 "http upstream downstream error"); | |
| 479 | 1916 |
| 1917 if (!u->cachable && u->peer.connection) { | |
| 1918 ngx_http_upstream_finalize_request(r, u, 0); | |
| 1919 } | |
| 1920 } | |
| 1921 } | |
| 1922 | |
| 1923 | |
| 487 | 1924 static void |
| 1925 ngx_http_upstream_dummy_handler(ngx_event_t *wev) | |
| 479 | 1926 { |
| 1927 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, | |
| 1928 "http upstream dummy handler"); | |
| 1929 } | |
| 1930 | |
| 1931 | |
| 487 | 1932 static void |
| 1933 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u, | |
| 1934 ngx_uint_t ft_type) | |
| 479 | 1935 { |
| 884 | 1936 ngx_uint_t status, state; |
| 479 | 1937 |
| 1938 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 884 | 1939 "http next upstream, %xi", ft_type); |
| 479 | 1940 |
| 1941 #if 0 | |
| 1942 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock); | |
| 1943 #endif | |
| 1944 | |
| 525 | 1945 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) { |
| 884 | 1946 state = NGX_PEER_NEXT; |
| 525 | 1947 } else { |
| 884 | 1948 state = NGX_PEER_FAILED; |
| 479 | 1949 } |
| 525 | 1950 |
| 884 | 1951 u->peer.free(&u->peer, u->peer.data, state); |
| 525 | 1952 |
| 479 | 1953 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) { |
| 1954 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT, | |
| 1955 "upstream timed out"); | |
| 1956 } | |
| 577 | 1957 |
| 479 | 1958 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) { |
| 1959 status = 0; | |
| 1960 | |
| 1961 } else { | |
| 1962 switch(ft_type) { | |
| 1963 | |
| 1964 case NGX_HTTP_UPSTREAM_FT_TIMEOUT: | |
| 1965 status = NGX_HTTP_GATEWAY_TIME_OUT; | |
| 1966 break; | |
| 1967 | |
| 1968 case NGX_HTTP_UPSTREAM_FT_HTTP_500: | |
| 1969 status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 1970 break; | |
| 1971 | |
| 1972 case NGX_HTTP_UPSTREAM_FT_HTTP_404: | |
| 1973 status = NGX_HTTP_NOT_FOUND; | |
| 1974 break; | |
| 1975 | |
| 1976 /* | |
| 1977 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING | |
| 1978 * never reach here | |
| 1979 */ | |
| 1980 | |
| 1981 default: | |
| 1982 status = NGX_HTTP_BAD_GATEWAY; | |
| 1983 } | |
| 1984 } | |
| 1985 | |
| 583 | 1986 if (r->connection->error) { |
| 479 | 1987 ngx_http_upstream_finalize_request(r, u, |
| 1988 NGX_HTTP_CLIENT_CLOSED_REQUEST); | |
| 1989 return; | |
| 1990 } | |
| 1991 | |
| 1992 if (status) { | |
| 1993 u->state->status = status; | |
| 1994 | |
| 525 | 1995 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) { |
| 479 | 1996 |
| 1997 #if (NGX_HTTP_CACHE) | |
| 1998 | |
| 1999 if (u->stale && (u->conf->use_stale & ft_type)) { | |
| 2000 ngx_http_upstream_finalize_request(r, u, | |
| 525 | 2001 ngx_http_send_cached_response(r)); |
| 479 | 2002 return; |
| 2003 } | |
| 2004 | |
| 2005 #endif | |
| 2006 | |
| 2007 ngx_http_upstream_finalize_request(r, u, status); | |
| 2008 return; | |
| 2009 } | |
| 2010 } | |
| 2011 | |
| 2012 if (u->peer.connection) { | |
| 2013 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2014 "close http upstream connection: %d", | |
| 2015 u->peer.connection->fd); | |
| 577 | 2016 #if (NGX_HTTP_SSL) |
| 884 | 2017 |
| 577 | 2018 if (u->peer.connection->ssl) { |
| 884 | 2019 u->peer.connection->ssl->no_wait_shutdown = 1; |
| 2020 u->peer.connection->ssl->no_send_shutdown = 1; | |
| 2021 | |
| 2022 (void) ngx_ssl_shutdown(u->peer.connection); | |
| 577 | 2023 } |
| 2024 #endif | |
| 884 | 2025 |
| 479 | 2026 ngx_close_connection(u->peer.connection); |
| 2027 } | |
| 2028 | |
| 2029 #if 0 | |
| 2030 if (u->conf->busy_lock && !u->busy_locked) { | |
| 2031 ngx_http_upstream_busy_lock(p); | |
| 2032 return; | |
| 2033 } | |
| 2034 #endif | |
| 2035 | |
| 2036 ngx_http_upstream_connect(r, u); | |
| 2037 } | |
| 2038 | |
| 2039 | |
| 487 | 2040 static void |
| 569 | 2041 ngx_http_upstream_cleanup(void *data) |
| 2042 { | |
| 2043 ngx_http_request_t *r = data; | |
| 2044 | |
| 2045 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2046 "cleanup http upstream request: \"%V\"", &r->uri); | |
| 2047 | |
| 2048 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE); | |
| 2049 } | |
| 2050 | |
| 2051 | |
| 2052 static void | |
| 487 | 2053 ngx_http_upstream_finalize_request(ngx_http_request_t *r, |
| 2054 ngx_http_upstream_t *u, ngx_int_t rc) | |
| 479 | 2055 { |
|
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|
2056 ngx_time_t *tp; |
| 563 | 2057 |
| 483 | 2058 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 2059 "finalize http upstream request: %i", rc); | |
| 479 | 2060 |
| 569 | 2061 *u->cleanup = NULL; |
| 2062 | |
|
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|
2063 if (u->state->response_sec) { |
| 563 | 2064 tp = ngx_timeofday(); |
|
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|
2065 u->state->response_sec = tp->sec - u->state->response_sec; |
|
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parents:
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diff
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|
2066 u->state->response_msec = tp->msec - u->state->response_msec; |
| 563 | 2067 } |
| 2068 | |
| 479 | 2069 u->finalize_request(r, rc); |
| 2070 | |
| 884 | 2071 u->peer.free(&u->peer, u->peer.data, 0); |
| 2072 | |
| 479 | 2073 if (u->peer.connection) { |
| 884 | 2074 |
| 577 | 2075 #if (NGX_HTTP_SSL) |
| 2076 | |
| 2077 /* TODO: do not shutdown persistent connection */ | |
| 2078 | |
| 2079 if (u->peer.connection->ssl) { | |
| 884 | 2080 |
| 2081 /* | |
| 2082 * We send the "close notify" shutdown alert to the upstream only | |
| 2083 * and do not wait its "close notify" shutdown alert. | |
| 2084 * It is acceptable according to the TLS standard. | |
| 2085 */ | |
| 2086 | |
| 2087 u->peer.connection->ssl->no_wait_shutdown = 1; | |
| 2088 | |
| 2089 (void) ngx_ssl_shutdown(u->peer.connection); | |
| 577 | 2090 } |
| 2091 #endif | |
| 884 | 2092 |
| 2093 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2094 "close http upstream connection: %d", | |
| 2095 u->peer.connection->fd); | |
| 2096 | |
| 479 | 2097 ngx_close_connection(u->peer.connection); |
| 2098 } | |
| 2099 | |
| 483 | 2100 u->peer.connection = NULL; |
| 2101 | |
| 563 | 2102 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE)) |
| 479 | 2103 { |
| 2104 rc = 0; | |
| 2105 } | |
| 2106 | |
| 581 | 2107 if (u->pipe && u->pipe->temp_file) { |
| 479 | 2108 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| 2109 "http upstream temp fd: %d", | |
| 581 | 2110 u->pipe->temp_file->file.fd); |
| 479 | 2111 } |
| 2112 | |
| 2113 #if 0 | |
| 2114 if (u->cache) { | |
| 2115 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 483 | 2116 "http upstream cache fd: %d", |
| 479 | 2117 u->cache->ctx.file.fd); |
| 2118 } | |
| 2119 #endif | |
| 2120 | |
| 515 | 2121 if (rc == NGX_DECLINED) { |
| 2122 return; | |
| 2123 } | |
| 2124 | |
| 483 | 2125 r->connection->log->action = "sending to client"; |
| 2126 | |
| 629 | 2127 if (rc == 0 && r == r->main && !r->post_action) { |
| 581 | 2128 rc = ngx_http_send_special(r, NGX_HTTP_LAST); |
| 479 | 2129 } |
| 2130 | |
| 2131 ngx_http_finalize_request(r, rc); | |
| 2132 } | |
| 2133 | |
| 2134 | |
| 509 | 2135 static ngx_int_t |
| 2136 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2137 ngx_uint_t offset) | |
| 577 | 2138 { |
| 509 | 2139 ngx_table_elt_t **ph; |
| 577 | 2140 |
| 509 | 2141 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset); |
| 2142 | |
| 2143 if (*ph == NULL) { | |
| 2144 *ph = h; | |
| 2145 } | |
| 2146 | |
| 2147 return NGX_OK; | |
| 2148 } | |
| 2149 | |
| 2150 | |
| 2151 static ngx_int_t | |
| 2152 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r, | |
| 2153 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2154 { | |
| 2155 ngx_array_t *pa; | |
| 2156 ngx_table_elt_t **ph; | |
| 2157 | |
| 2158 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset); | |
| 2159 | |
| 2160 if (pa->elts == NULL) { | |
| 2161 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
| 2162 { | |
| 2163 return NGX_ERROR; | |
| 2164 } | |
| 2165 } | |
| 2166 | |
| 2167 ph = ngx_array_push(pa); | |
| 2168 if (ph == NULL) { | |
| 2169 return NGX_ERROR; | |
| 2170 } | |
| 2171 | |
| 2172 *ph = h; | |
| 2173 | |
| 2174 return NGX_OK; | |
| 2175 } | |
| 2176 | |
| 2177 | |
| 2178 static ngx_int_t | |
| 2179 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2180 ngx_uint_t offset) | |
| 2181 { | |
| 2182 return NGX_OK; | |
| 2183 } | |
| 2184 | |
| 2185 | |
| 2186 static ngx_int_t | |
| 527 | 2187 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2188 ngx_uint_t offset) | |
| 577 | 2189 { |
| 527 | 2190 ngx_int_t n; |
| 2191 | |
| 2192 r->upstream->headers_in.x_accel_limit_rate = h; | |
| 2193 | |
| 2194 n = ngx_atoi(h->value.data, h->value.len); | |
| 2195 | |
| 2196 if (n != NGX_ERROR) { | |
| 2197 r->limit_rate = (size_t) n; | |
| 2198 } | |
| 2199 | |
| 2200 return NGX_OK; | |
| 2201 } | |
| 2202 | |
| 2203 | |
| 2204 static ngx_int_t | |
| 649 | 2205 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2206 ngx_uint_t offset) | |
| 2207 { | |
| 2208 u_char c0, c1, c2; | |
| 2209 | |
| 2210 if (r->upstream->conf->change_buffering) { | |
| 2211 | |
| 2212 if (h->value.len == 2) { | |
| 2213 c0 = ngx_tolower(h->value.data[0]); | |
| 2214 c1 = ngx_tolower(h->value.data[1]); | |
| 2215 | |
| 2216 if (c0 == 'n' && c1 == 'o') { | |
| 2217 r->upstream->buffering = 0; | |
| 2218 } | |
| 2219 | |
| 2220 } else if (h->value.len == 3) { | |
| 2221 c0 = ngx_tolower(h->value.data[0]); | |
| 2222 c1 = ngx_tolower(h->value.data[1]); | |
| 2223 c2 = ngx_tolower(h->value.data[2]); | |
| 2224 | |
| 2225 if (c0 == 'y' && c1 == 'e' && c2 == 's') { | |
| 2226 r->upstream->buffering = 1; | |
| 2227 } | |
| 2228 } | |
| 2229 } | |
| 2230 | |
| 2231 return NGX_OK; | |
| 2232 } | |
| 2233 | |
| 2234 | |
| 2235 static ngx_int_t | |
| 657 | 2236 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2237 ngx_uint_t offset) | |
| 2238 { | |
| 2239 r->headers_out.override_charset = &h->value; | |
| 2240 | |
| 2241 return NGX_OK; | |
| 2242 } | |
| 2243 | |
| 2244 | |
| 2245 static ngx_int_t | |
| 509 | 2246 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h, |
| 2247 ngx_uint_t offset) | |
| 2248 { | |
| 573 | 2249 ngx_table_elt_t *ho, **ph; |
| 509 | 2250 |
| 2251 ho = ngx_list_push(&r->headers_out.headers); | |
| 2252 if (ho == NULL) { | |
| 2253 return NGX_ERROR; | |
| 2254 } | |
| 2255 | |
| 2256 *ho = *h; | |
| 2257 | |
| 573 | 2258 if (offset) { |
| 2259 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset); | |
| 2260 *ph = ho; | |
| 2261 } | |
| 2262 | |
| 509 | 2263 return NGX_OK; |
| 2264 } | |
| 2265 | |
| 2266 | |
| 2267 static ngx_int_t | |
| 2268 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r, | |
| 2269 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2270 { | |
| 2271 ngx_array_t *pa; | |
| 2272 ngx_table_elt_t *ho, **ph; | |
| 2273 | |
| 2274 pa = (ngx_array_t *) ((char *) &r->headers_out + offset); | |
| 2275 | |
| 2276 if (pa->elts == NULL) { | |
| 2277 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK) | |
| 2278 { | |
| 2279 return NGX_ERROR; | |
| 2280 } | |
| 2281 } | |
| 2282 | |
| 2283 ph = ngx_array_push(pa); | |
| 2284 if (ph == NULL) { | |
| 2285 return NGX_ERROR; | |
| 2286 } | |
| 2287 | |
| 2288 ho = ngx_list_push(&r->headers_out.headers); | |
| 2289 if (ho == NULL) { | |
| 2290 return NGX_ERROR; | |
| 2291 } | |
| 2292 | |
| 2293 *ho = *h; | |
| 2294 *ph = ho; | |
| 2295 | |
| 2296 return NGX_OK; | |
| 2297 } | |
| 2298 | |
| 2299 | |
| 2300 static ngx_int_t | |
| 2301 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2302 ngx_uint_t offset) | |
| 2303 { | |
| 657 | 2304 u_char *p, *last; |
| 2305 | |
| 2306 r->headers_out.content_type_len = h->value.len; | |
| 509 | 2307 r->headers_out.content_type = h->value; |
| 2308 | |
| 657 | 2309 for (p = h->value.data; *p; p++) { |
| 2310 | |
| 2311 if (*p != ';') { | |
| 2312 continue; | |
| 2313 } | |
| 2314 | |
| 2315 last = p; | |
| 2316 | |
| 2317 while (*++p == ' ') { /* void */ } | |
| 2318 | |
|
1107
db7c468c447d
ngx_strcasecmp()/ngx_strncasecmp()
Igor Sysoev <igor@sysoev.ru>
parents:
1098
diff
changeset
|
2319 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) { |
| 657 | 2320 continue; |
| 2321 } | |
| 2322 | |
| 2323 p += 8; | |
| 2324 | |
| 2325 r->headers_out.content_type_len = last - h->value.data; | |
| 2326 | |
| 2327 r->headers_out.charset.len = h->value.data + h->value.len - p; | |
| 2328 r->headers_out.charset.data = p; | |
| 2329 } | |
| 2330 | |
| 509 | 2331 return NGX_OK; |
| 2332 } | |
| 2333 | |
| 2334 | |
| 2335 static ngx_int_t | |
| 2336 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2337 ngx_uint_t offset) | |
| 2338 { | |
| 2339 ngx_table_elt_t *ho; | |
| 2340 | |
| 2341 ho = ngx_list_push(&r->headers_out.headers); | |
| 2342 if (ho == NULL) { | |
| 2343 return NGX_ERROR; | |
| 2344 } | |
| 2345 | |
| 2346 *ho = *h; | |
| 2347 | |
| 2348 r->headers_out.content_length = ho; | |
| 2349 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len); | |
| 2350 | |
| 2351 return NGX_OK; | |
| 2352 } | |
| 2353 | |
| 2354 | |
| 2355 static ngx_int_t | |
| 2356 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2357 ngx_uint_t offset) | |
| 2358 { | |
| 2359 ngx_int_t rc; | |
| 2360 ngx_table_elt_t *ho; | |
| 2361 | |
| 2362 ho = ngx_list_push(&r->headers_out.headers); | |
| 2363 if (ho == NULL) { | |
| 2364 return NGX_ERROR; | |
| 2365 } | |
| 2366 | |
| 2367 *ho = *h; | |
| 2368 | |
| 2369 if (r->upstream->rewrite_redirect) { | |
| 2370 rc = r->upstream->rewrite_redirect(r, ho, 0); | |
| 2371 | |
| 529 | 2372 if (rc == NGX_DECLINED) { |
| 2373 return NGX_OK; | |
| 2374 } | |
| 2375 | |
| 509 | 2376 if (rc == NGX_OK) { |
| 2377 r->headers_out.location = ho; | |
| 2378 | |
| 2379 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2380 "rewritten location: \"%V\"", &ho->value); | |
| 2381 } | |
| 2382 | |
| 2383 return rc; | |
| 2384 } | |
| 2385 | |
| 2386 /* | |
| 2387 * we do not set r->headers_out.location here to avoid the handling | |
| 2388 * the local redirects without a host name by ngx_http_header_filter() | |
| 2389 */ | |
| 2390 | |
| 2391 return NGX_OK; | |
| 2392 } | |
| 2393 | |
| 2394 | |
| 2395 static ngx_int_t | |
| 2396 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h, | |
| 2397 ngx_uint_t offset) | |
| 2398 { | |
| 2399 u_char *p; | |
| 2400 ngx_int_t rc; | |
| 2401 ngx_table_elt_t *ho; | |
| 2402 | |
| 2403 ho = ngx_list_push(&r->headers_out.headers); | |
| 2404 if (ho == NULL) { | |
| 2405 return NGX_ERROR; | |
| 2406 } | |
| 2407 | |
| 2408 *ho = *h; | |
| 2409 | |
| 2410 if (r->upstream->rewrite_redirect) { | |
| 2411 | |
| 2412 p = (u_char *) ngx_strstr(ho->value.data, "url="); | |
| 2413 | |
| 2414 if (p) { | |
| 2415 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data); | |
| 2416 | |
| 2417 } else { | |
| 2418 return NGX_OK; | |
| 2419 } | |
| 2420 | |
| 529 | 2421 if (rc == NGX_DECLINED) { |
| 2422 return NGX_OK; | |
| 2423 } | |
| 2424 | |
| 509 | 2425 #if (NGX_DEBUG) |
| 2426 if (rc == NGX_OK) { | |
| 2427 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2428 "rewritten refresh: \"%V\"", &ho->value); | |
| 2429 } | |
| 2430 #endif | |
| 2431 | |
| 2432 return rc; | |
| 2433 } | |
| 2434 | |
| 2435 return NGX_OK; | |
| 2436 } | |
| 2437 | |
| 2438 | |
| 2439 #if (NGX_HTTP_GZIP) | |
| 2440 | |
| 2441 static ngx_int_t | |
| 2442 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r, | |
| 2443 ngx_table_elt_t *h, ngx_uint_t offset) | |
| 2444 { | |
| 2445 ngx_table_elt_t *ho; | |
| 2446 | |
| 2447 ho = ngx_list_push(&r->headers_out.headers); | |
| 2448 if (ho == NULL) { | |
| 2449 return NGX_ERROR; | |
| 2450 } | |
| 2451 | |
| 2452 *ho = *h; | |
| 2453 | |
| 2454 r->headers_out.content_encoding = ho; | |
| 2455 | |
| 2456 return NGX_OK; | |
| 2457 } | |
| 2458 | |
| 2459 #endif | |
| 2460 | |
| 2461 | |
| 487 | 2462 static ngx_int_t |
| 573 | 2463 ngx_http_upstream_add_variables(ngx_conf_t *cf) |
| 479 | 2464 { |
| 880 | 2465 ngx_http_variable_t *var, *v; |
| 479 | 2466 |
| 573 | 2467 for (v = ngx_http_upstream_vars; v->name.len; v++) { |
| 2468 var = ngx_http_add_variable(cf, &v->name, v->flags); | |
| 2469 if (var == NULL) { | |
| 2470 return NGX_ERROR; | |
| 2471 } | |
| 2472 | |
| 637 | 2473 var->get_handler = v->get_handler; |
| 573 | 2474 var->data = v->data; |
| 2475 } | |
| 2476 | |
| 479 | 2477 return NGX_OK; |
| 2478 } | |
| 509 | 2479 |
| 2480 | |
| 573 | 2481 static ngx_int_t |
| 2482 ngx_http_upstream_status_variable(ngx_http_request_t *r, | |
| 2483 ngx_http_variable_value_t *v, uintptr_t data) | |
| 2484 { | |
| 2485 u_char *p; | |
| 2486 size_t len; | |
| 2487 ngx_uint_t i; | |
| 2488 ngx_http_upstream_t *u; | |
| 2489 ngx_http_upstream_state_t *state; | |
| 2490 | |
| 2491 v->valid = 1; | |
| 2492 v->no_cachable = 0; | |
| 2493 v->not_found = 0; | |
| 2494 | |
| 2495 u = r->upstream; | |
| 2496 | |
| 2497 if (u == NULL || u->states.nelts == 0) { | |
| 2498 v->not_found = 1; | |
| 2499 return NGX_OK; | |
| 2500 } | |
| 2501 | |
| 2502 len = u->states.nelts * (3 + 2); | |
| 2503 | |
| 2504 p = ngx_palloc(r->pool, len); | |
| 2505 if (p == NULL) { | |
| 2506 return NGX_ERROR; | |
| 2507 } | |
| 2508 | |
| 2509 v->data = p; | |
| 2510 | |
| 2511 i = 0; | |
| 2512 state = u->states.elts; | |
| 2513 | |
| 2514 for ( ;; ) { | |
| 2515 if (state[i].status == 0) { | |
| 2516 *p++ = '-'; | |
| 2517 | |
| 2518 } else { | |
| 2519 p = ngx_sprintf(p, "%ui", state[i].status); | |
| 2520 } | |
| 2521 | |
| 2522 if (++i == u->states.nelts) { | |
| 2523 break; | |
| 2524 } | |
| 2525 | |
| 2526 *p++ = ','; | |
| 2527 *p++ = ' '; | |
| 2528 } | |
| 2529 | |
| 2530 v->len = p - v->data; | |
| 2531 | |
| 2532 return NGX_OK; | |
| 2533 } | |
| 2534 | |
| 2535 | |
| 2536 static ngx_int_t | |
| 2537 ngx_http_upstream_response_time_variable(ngx_http_request_t *r, | |
| 2538 ngx_http_variable_value_t *v, uintptr_t data) | |
| 2539 { | |
| 2540 u_char *p; | |
| 2541 size_t len; | |
| 2542 ngx_uint_t i; | |
|
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2543 ngx_msec_int_t ms; |
| 573 | 2544 ngx_http_upstream_t *u; |
| 2545 ngx_http_upstream_state_t *state; | |
| 2546 | |
| 2547 v->valid = 1; | |
| 2548 v->no_cachable = 0; | |
| 2549 v->not_found = 0; | |
| 2550 | |
| 2551 u = r->upstream; | |
| 2552 | |
| 2553 if (u == NULL || u->states.nelts == 0) { | |
| 2554 v->not_found = 1; | |
| 2555 return NGX_OK; | |
| 2556 } | |
| 2557 | |
| 2558 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2); | |
| 2559 | |
| 2560 p = ngx_palloc(r->pool, len); | |
| 2561 if (p == NULL) { | |
| 2562 return NGX_ERROR; | |
| 2563 } | |
| 2564 | |
| 2565 v->data = p; | |
| 2566 | |
| 2567 i = 0; | |
| 2568 state = u->states.elts; | |
| 2569 | |
| 2570 for ( ;; ) { | |
| 2571 if (state[i].status == 0) { | |
| 2572 *p++ = '-'; | |
| 2573 | |
| 2574 } else { | |
|
889
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2575 ms = state[i].response_sec * 1000 + state[i].response_msec; |
|
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2576 ms = (ms >= 0) ? ms : 0; |
|
a9a7e4b1a72b
the previous fix does not actually fix overflow
Igor Sysoev <igor@sysoev.ru>
parents:
888
diff
changeset
|
2577 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000); |
| 573 | 2578 } |
| 2579 | |
| 2580 if (++i == u->states.nelts) { | |
| 2581 break; | |
| 2582 } | |
| 2583 | |
| 2584 *p++ = ','; | |
| 2585 *p++ = ' '; | |
| 2586 } | |
| 2587 | |
| 2588 v->len = p - v->data; | |
| 2589 | |
| 2590 return NGX_OK; | |
| 2591 } | |
| 2592 | |
| 2593 | |
| 651 | 2594 static char * |
| 2595 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy) | |
| 2596 { | |
| 884 | 2597 char *rv; |
| 2598 void *mconf; | |
| 2599 ngx_str_t *value; | |
| 2600 ngx_url_t u; | |
| 2601 ngx_uint_t m; | |
| 2602 ngx_conf_t pcf; | |
| 2603 ngx_http_module_t *module; | |
| 2604 ngx_http_conf_ctx_t *ctx, *http_ctx; | |
| 2605 ngx_http_upstream_srv_conf_t *uscf; | |
| 2606 | |
| 2607 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 2608 | |
| 2609 value = cf->args->elts; | |
| 2610 u.host = value[1]; | |
| 2611 u.no_resolve = 1; | |
| 2612 | |
| 2613 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE | |
| 2614 |NGX_HTTP_UPSTREAM_WEIGHT | |
| 2615 |NGX_HTTP_UPSTREAM_MAX_FAILS | |
| 2616 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT | |
| 2617 |NGX_HTTP_UPSTREAM_DOWN | |
| 2618 |NGX_HTTP_UPSTREAM_BACKUP); | |
| 2619 if (uscf == NULL) { | |
| 2620 return NGX_CONF_ERROR; | |
| 2621 } | |
| 2622 | |
| 651 | 2623 |
| 2624 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); | |
| 2625 if (ctx == NULL) { | |
| 2626 return NGX_CONF_ERROR; | |
| 2627 } | |
| 2628 | |
| 884 | 2629 http_ctx = cf->ctx; |
| 2630 ctx->main_conf = http_ctx->main_conf; | |
| 651 | 2631 |
| 2632 /* the upstream{}'s srv_conf */ | |
| 2633 | |
| 2634 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 2635 if (ctx->srv_conf == NULL) { | |
| 2636 return NGX_CONF_ERROR; | |
| 2637 } | |
| 2638 | |
| 2639 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf; | |
| 2640 | |
| 884 | 2641 uscf->srv_conf = ctx->srv_conf; |
| 2642 | |
| 651 | 2643 |
| 2644 /* the upstream{}'s loc_conf */ | |
| 2645 | |
| 2646 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); | |
| 2647 if (ctx->loc_conf == NULL) { | |
| 2648 return NGX_CONF_ERROR; | |
| 2649 } | |
| 2650 | |
| 2651 for (m = 0; ngx_modules[m]; m++) { | |
| 2652 if (ngx_modules[m]->type != NGX_HTTP_MODULE) { | |
| 2653 continue; | |
| 2654 } | |
| 2655 | |
| 2656 module = ngx_modules[m]->ctx; | |
| 2657 | |
| 884 | 2658 if (module->create_srv_conf) { |
| 2659 mconf = module->create_srv_conf(cf); | |
| 2660 if (mconf == NULL) { | |
| 2661 return NGX_CONF_ERROR; | |
| 2662 } | |
| 2663 | |
| 2664 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; | |
| 2665 } | |
| 2666 | |
| 651 | 2667 if (module->create_loc_conf) { |
| 2668 mconf = module->create_loc_conf(cf); | |
| 2669 if (mconf == NULL) { | |
| 2670 return NGX_CONF_ERROR; | |
| 2671 } | |
| 2672 | |
| 2673 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf; | |
| 2674 } | |
| 2675 } | |
| 2676 | |
| 2677 | |
| 2678 /* parse inside upstream{} */ | |
| 2679 | |
| 2680 pcf = *cf; | |
| 2681 cf->ctx = ctx; | |
| 2682 cf->cmd_type = NGX_HTTP_UPS_CONF; | |
| 2683 | |
| 2684 rv = ngx_conf_parse(cf, NULL); | |
| 2685 | |
| 2686 *cf = pcf; | |
| 2687 | |
| 2688 if (rv != NGX_CONF_OK) { | |
| 2689 return rv; | |
| 2690 } | |
| 2691 | |
| 2692 if (uscf->servers == NULL) { | |
| 2693 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2694 "no servers are inside upstream"); | |
| 2695 return NGX_CONF_ERROR; | |
| 2696 } | |
| 2697 | |
| 2698 return rv; | |
| 2699 } | |
| 2700 | |
| 2701 | |
| 2702 static char * | |
| 2703 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 2704 { | |
| 2705 ngx_http_upstream_srv_conf_t *uscf = conf; | |
| 2706 | |
| 884 | 2707 time_t fail_timeout; |
| 2708 ngx_str_t *value, s; | |
| 2709 ngx_url_t u; | |
| 2710 ngx_int_t weight, max_fails; | |
| 2711 ngx_uint_t i; | |
| 2712 ngx_http_upstream_server_t *us; | |
| 651 | 2713 |
| 2714 if (uscf->servers == NULL) { | |
| 884 | 2715 uscf->servers = ngx_array_create(cf->pool, 4, |
| 2716 sizeof(ngx_http_upstream_server_t)); | |
| 651 | 2717 if (uscf->servers == NULL) { |
| 2718 return NGX_CONF_ERROR; | |
| 2719 } | |
| 2720 } | |
| 2721 | |
| 884 | 2722 us = ngx_array_push(uscf->servers); |
| 2723 if (us == NULL) { | |
| 651 | 2724 return NGX_CONF_ERROR; |
| 2725 } | |
| 2726 | |
| 884 | 2727 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); |
| 2728 | |
| 651 | 2729 value = cf->args->elts; |
| 2730 | |
| 2731 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 2732 | |
| 2733 u.url = value[1]; | |
| 906 | 2734 u.default_port = 80; |
| 651 | 2735 |
| 2736 if (ngx_parse_url(cf, &u) != NGX_OK) { | |
| 2737 if (u.err) { | |
| 2738 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2739 "%s in upstream \"%V\"", u.err, &u.url); | |
| 2740 } | |
| 2741 | |
| 2742 return NGX_CONF_ERROR; | |
| 2743 } | |
| 2744 | |
| 663 | 2745 weight = 1; |
| 884 | 2746 max_fails = 1; |
| 2747 fail_timeout = 10; | |
| 2748 | |
| 2749 for (i = 2; i < cf->args->nelts; i++) { | |
| 2750 | |
| 2751 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) { | |
| 2752 | |
| 2753 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) { | |
| 2754 goto invalid; | |
| 2755 } | |
| 2756 | |
| 2757 weight = ngx_atoi(&value[i].data[7], value[i].len - 7); | |
| 663 | 2758 |
| 2759 if (weight == NGX_ERROR || weight == 0) { | |
| 2760 goto invalid; | |
| 2761 } | |
| 2762 | |
| 884 | 2763 continue; |
| 2764 } | |
| 2765 | |
| 2766 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) { | |
| 2767 | |
| 2768 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) { | |
| 2769 goto invalid; | |
| 2770 } | |
| 2771 | |
| 2772 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10); | |
| 2773 | |
| 2774 if (max_fails == NGX_ERROR) { | |
| 2775 goto invalid; | |
| 2776 } | |
| 2777 | |
| 2778 continue; | |
| 663 | 2779 } |
| 884 | 2780 |
| 2781 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) { | |
| 2782 | |
| 2783 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) { | |
| 2784 goto invalid; | |
| 2785 } | |
| 2786 | |
| 2787 s.len = value[i].len - 13; | |
| 2788 s.data = &value[i].data[13]; | |
| 2789 | |
| 2790 fail_timeout = ngx_parse_time(&s, 1); | |
| 2791 | |
| 2792 if (fail_timeout < 0) { | |
| 2793 goto invalid; | |
| 2794 } | |
| 2795 | |
| 2796 continue; | |
| 2797 } | |
| 2798 | |
| 2799 if (ngx_strncmp(value[i].data, "down", 4) == 0) { | |
| 2800 | |
| 2801 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) { | |
| 2802 goto invalid; | |
| 2803 } | |
| 2804 | |
| 2805 us->down = 1; | |
| 2806 | |
| 2807 continue; | |
| 2808 } | |
| 2809 | |
| 2810 goto invalid; | |
| 663 | 2811 } |
| 2812 | |
| 884 | 2813 us->addrs = u.addrs; |
| 2814 us->naddrs = u.naddrs; | |
| 2815 us->weight = weight; | |
| 2816 us->max_fails = max_fails; | |
| 2817 us->fail_timeout = fail_timeout; | |
| 651 | 2818 |
| 2819 return NGX_CONF_OK; | |
| 663 | 2820 |
| 2821 invalid: | |
| 2822 | |
| 884 | 2823 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 2824 "invalid parameter \"%V\"", &value[i]); | |
| 663 | 2825 |
| 2826 return NGX_CONF_ERROR; | |
| 651 | 2827 } |
| 2828 | |
| 2829 | |
| 2830 ngx_http_upstream_srv_conf_t * | |
| 884 | 2831 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags) |
| 651 | 2832 { |
| 2833 ngx_uint_t i; | |
| 884 | 2834 ngx_http_upstream_server_t *us; |
| 651 | 2835 ngx_http_upstream_srv_conf_t *uscf, **uscfp; |
| 2836 ngx_http_upstream_main_conf_t *umcf; | |
| 2837 | |
| 884 | 2838 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) { |
| 2839 | |
| 651 | 2840 if (ngx_parse_url(cf, u) != NGX_OK) { |
| 2841 if (u->err) { | |
| 2842 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 2843 "%s in upstream \"%V\"", u->err, &u->url); | |
| 2844 } | |
| 2845 | |
| 2846 return NULL; | |
| 2847 } | |
| 2848 } | |
| 2849 | |
| 2850 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module); | |
| 2851 | |
| 2852 uscfp = umcf->upstreams.elts; | |
| 2853 | |
| 2854 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
| 906 | 2855 |
| 2856 if (uscfp[i]->host.len != u->host.len | |
| 884 | 2857 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len) |
| 2858 != 0) | |
| 2859 { | |
| 651 | 2860 continue; |
| 2861 } | |
| 2862 | |
| 884 | 2863 if ((flags & NGX_HTTP_UPSTREAM_CREATE) |
| 2864 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE)) | |
| 651 | 2865 { |
| 884 | 2866 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| 2867 "duplicate upstream \"%V\"", &u->host); | |
| 2868 return NULL; | |
| 651 | 2869 } |
| 884 | 2870 |
| 906 | 2871 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) { |
| 884 | 2872 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
| 906 | 2873 "upstream \"%V\" may not have port %d", |
| 2874 &u->host, u->port); | |
| 2875 return NULL; | |
| 2876 } | |
| 2877 | |
| 2878 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) { | |
| 2879 ngx_log_error(NGX_LOG_WARN, cf->log, 0, | |
| 2880 "upstream \"%V\" may not have port %d in %s:%ui", | |
| 2881 &u->host, uscfp[i]->port, | |
| 2882 uscfp[i]->file_name.data, uscfp[i]->line); | |
| 2883 return NULL; | |
| 2884 } | |
| 2885 | |
| 2886 if (uscfp[i]->port != u->port) { | |
| 2887 continue; | |
| 884 | 2888 } |
| 2889 | |
| 2890 return uscfp[i]; | |
| 651 | 2891 } |
| 2892 | |
| 2893 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t)); | |
| 2894 if (uscf == NULL) { | |
| 2895 return NULL; | |
| 2896 } | |
| 2897 | |
| 884 | 2898 uscf->flags = flags; |
| 651 | 2899 uscf->host = u->host; |
| 2900 uscf->file_name = cf->conf_file->file.name; | |
| 2901 uscf->line = cf->conf_file->line; | |
| 906 | 2902 uscf->port = u->port; |
| 2903 uscf->default_port = u->default_port; | |
| 884 | 2904 |
| 2905 if (u->naddrs == 1) { | |
| 2906 uscf->servers = ngx_array_create(cf->pool, 1, | |
| 2907 sizeof(ngx_http_upstream_server_t)); | |
| 2908 if (uscf->servers == NULL) { | |
| 2909 return NGX_CONF_ERROR; | |
| 2910 } | |
| 2911 | |
| 2912 us = ngx_array_push(uscf->servers); | |
| 2913 if (us == NULL) { | |
| 2914 return NGX_CONF_ERROR; | |
| 2915 } | |
| 2916 | |
| 2917 ngx_memzero(us, sizeof(ngx_http_upstream_server_t)); | |
| 2918 | |
| 2919 us->addrs = u->addrs; | |
| 2920 us->naddrs = u->naddrs; | |
| 2921 } | |
| 651 | 2922 |
| 2923 uscfp = ngx_array_push(&umcf->upstreams); | |
| 2924 if (uscfp == NULL) { | |
| 2925 return NULL; | |
| 2926 } | |
| 2927 | |
| 2928 *uscfp = uscf; | |
| 2929 | |
| 2930 return uscf; | |
| 2931 } | |
| 2932 | |
| 2933 | |
| 509 | 2934 static void * |
| 2935 ngx_http_upstream_create_main_conf(ngx_conf_t *cf) | |
| 2936 { | |
| 2937 ngx_http_upstream_main_conf_t *umcf; | |
| 2938 | |
| 2939 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t)); | |
| 2940 if (umcf == NULL) { | |
| 2941 return NULL; | |
| 2942 } | |
| 2943 | |
| 651 | 2944 if (ngx_array_init(&umcf->upstreams, cf->pool, 4, |
| 2945 sizeof(ngx_http_upstream_srv_conf_t *)) | |
| 2946 != NGX_OK) | |
| 2947 { | |
| 2948 return NGX_CONF_ERROR; | |
| 2949 } | |
| 2950 | |
| 509 | 2951 return umcf; |
| 2952 } | |
| 2953 | |
| 2954 | |
| 2955 static char * | |
| 651 | 2956 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf) |
| 509 | 2957 { |
| 2958 ngx_http_upstream_main_conf_t *umcf = conf; | |
| 2959 | |
| 651 | 2960 ngx_uint_t i; |
| 2961 ngx_array_t headers_in; | |
| 2962 ngx_hash_key_t *hk; | |
| 2963 ngx_hash_init_t hash; | |
| 884 | 2964 ngx_http_upstream_init_pt init; |
| 651 | 2965 ngx_http_upstream_header_t *header; |
| 2966 ngx_http_upstream_srv_conf_t **uscfp; | |
| 2967 | |
| 2968 uscfp = umcf->upstreams.elts; | |
| 2969 | |
| 2970 for (i = 0; i < umcf->upstreams.nelts; i++) { | |
| 884 | 2971 |
| 2972 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream: | |
| 2973 ngx_http_upstream_init_round_robin; | |
| 2974 | |
| 2975 if (init(cf, uscfp[i]) != NGX_OK) { | |
| 651 | 2976 return NGX_CONF_ERROR; |
| 2977 } | |
| 2978 } | |
| 649 | 2979 |
| 663 | 2980 |
| 884 | 2981 /* upstream_headers_in_hash */ |
| 2982 | |
| 649 | 2983 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t)) |
| 2984 != NGX_OK) | |
| 509 | 2985 { |
| 2986 return NGX_CONF_ERROR; | |
| 2987 } | |
| 2988 | |
| 649 | 2989 for (header = ngx_http_upstream_headers_in; header->name.len; header++) { |
| 2990 hk = ngx_array_push(&headers_in); | |
| 2991 if (hk == NULL) { | |
| 2992 return NGX_CONF_ERROR; | |
| 2993 } | |
| 2994 | |
| 2995 hk->key = header->name; | |
| 2996 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len); | |
| 2997 hk->value = header; | |
| 2998 } | |
| 2999 | |
| 3000 hash.hash = &umcf->headers_in_hash; | |
| 3001 hash.key = ngx_hash_key_lc; | |
| 3002 hash.max_size = 512; | |
|
751
bae59a740c40
align hash bucket size to cache line
Igor Sysoev <igor@sysoev.ru>
parents:
750
diff
changeset
|
3003 hash.bucket_size = ngx_align(64, ngx_cacheline_size); |
| 649 | 3004 hash.name = "upstream_headers_in_hash"; |
| 3005 hash.pool = cf->pool; | |
| 3006 hash.temp_pool = NULL; | |
| 3007 | |
| 3008 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) { | |
| 3009 return NGX_CONF_ERROR; | |
| 3010 } | |
| 509 | 3011 |
| 3012 return NGX_CONF_OK; | |
| 3013 } |