|
28
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
|
4 */
|
|
|
5
|
|
|
6
|
|
|
7 #include <ngx_config.h>
|
|
|
8 #include <ngx_core.h>
|
|
58
|
9 #include <ngx_event_connect.h>
|
|
28
|
10 #include <ngx_http.h>
|
|
|
11
|
|
|
12
|
|
58
|
13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
|
|
|
14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
|
|
|
15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
16 ngx_event_t *ev);
|
|
28
|
17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
|
|
36
|
18 ngx_http_upstream_t *u);
|
|
58
|
19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
|
|
36
|
20 ngx_http_upstream_t *u);
|
|
28
|
21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
|
|
36
|
22 ngx_http_upstream_t *u);
|
|
28
|
23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
|
|
|
24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
|
|
|
25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
|
|
36
|
26 ngx_http_upstream_t *u);
|
|
58
|
27 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
|
|
28
|
28 static void ngx_http_upstream_process_body(ngx_event_t *ev);
|
|
|
29 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
|
|
|
30 static void ngx_http_upstream_next(ngx_http_request_t *r,
|
|
36
|
31 ngx_http_upstream_t *u, ngx_uint_t ft_type);
|
|
28
|
32 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
36
|
33 ngx_http_upstream_t *u, ngx_int_t rc);
|
|
28
|
34
|
|
58
|
35 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
|
|
|
36 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
37 static ngx_int_t
|
|
|
38 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
39 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
40 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
|
|
|
41 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
76
|
42 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
|
|
|
43 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
58
|
44 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
|
|
|
45 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
46 static ngx_int_t
|
|
|
47 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
48 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
49 static ngx_int_t
|
|
|
50 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
51 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
52 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
|
|
|
53 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
54 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
|
|
|
55 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
56 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
|
|
|
57 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
58 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
|
|
|
59 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
60 #if (NGX_HTTP_GZIP)
|
|
|
61 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
62 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
63 #endif
|
|
|
64
|
|
28
|
65 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
|
|
36
|
66 uintptr_t data);
|
|
|
67 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
|
|
|
68 u_char *buf, ngx_http_log_op_t *op);
|
|
28
|
69
|
|
58
|
70 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
|
|
|
71 size_t len);
|
|
28
|
72 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf);
|
|
58
|
73 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
|
|
|
74 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
|
|
|
75
|
|
|
76
|
|
|
77 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
|
|
|
78
|
|
|
79 { ngx_string("Status"),
|
|
|
80 ngx_http_upstream_process_header_line,
|
|
|
81 offsetof(ngx_http_upstream_headers_in_t, status),
|
|
64
|
82 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
83
|
|
|
84 { ngx_string("Content-Type"),
|
|
|
85 ngx_http_upstream_process_header_line,
|
|
|
86 offsetof(ngx_http_upstream_headers_in_t, content_type),
|
|
64
|
87 ngx_http_upstream_copy_content_type, 0, 0 },
|
|
58
|
88
|
|
|
89 { ngx_string("Content-Length"),
|
|
|
90 ngx_http_upstream_process_header_line,
|
|
|
91 offsetof(ngx_http_upstream_headers_in_t, content_length),
|
|
64
|
92 ngx_http_upstream_copy_content_length, 0, 0 },
|
|
58
|
93
|
|
|
94 { ngx_string("Date"),
|
|
|
95 ngx_http_upstream_process_header_line,
|
|
|
96 offsetof(ngx_http_upstream_headers_in_t, date),
|
|
|
97 ngx_http_upstream_conditional_copy_header_line,
|
|
64
|
98 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
|
|
58
|
99
|
|
|
100 { ngx_string("Server"),
|
|
|
101 ngx_http_upstream_process_header_line,
|
|
|
102 offsetof(ngx_http_upstream_headers_in_t, server),
|
|
|
103 ngx_http_upstream_conditional_copy_header_line,
|
|
64
|
104 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
|
|
58
|
105
|
|
78
|
106 { ngx_string("WWW-Authenticate"),
|
|
|
107 ngx_http_upstream_process_header_line,
|
|
|
108 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
|
|
|
109 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
|
110
|
|
58
|
111 { ngx_string("Location"),
|
|
|
112 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
113 ngx_http_upstream_rewrite_location, 0, 0 },
|
|
58
|
114
|
|
|
115 { ngx_string("Refresh"),
|
|
|
116 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
117 ngx_http_upstream_rewrite_refresh, 0, 0 },
|
|
|
118
|
|
|
119 { ngx_string("Set-Cookie"),
|
|
|
120 ngx_http_upstream_ignore_header_line, 0,
|
|
80
|
121 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
|
122
|
|
|
123 { ngx_string("Content-Disposition"),
|
|
|
124 ngx_http_upstream_ignore_header_line, 0,
|
|
|
125 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
58
|
126
|
|
|
127 { ngx_string("Cache-Control"),
|
|
|
128 ngx_http_upstream_process_multi_header_lines,
|
|
|
129 offsetof(ngx_http_upstream_headers_in_t, cache_control),
|
|
|
130 ngx_http_upstream_copy_multi_header_lines,
|
|
64
|
131 offsetof(ngx_http_headers_out_t, cache_control), 1 },
|
|
58
|
132
|
|
|
133 { ngx_string("Connection"),
|
|
|
134 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
135 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
136
|
|
|
137 { ngx_string("X-Pad"),
|
|
|
138 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
139 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
140
|
|
|
141 { ngx_string("X-Powered-By"),
|
|
|
142 ngx_http_upstream_ignore_header_line, 0,
|
|
|
143 ngx_http_upstream_conditional_copy_header_line,
|
|
64
|
144 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
|
|
58
|
145
|
|
|
146 { ngx_string("X-Accel-Expires"),
|
|
|
147 ngx_http_upstream_process_header_line,
|
|
|
148 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
|
|
|
149 ngx_http_upstream_conditional_copy_header_line,
|
|
64
|
150 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
|
|
|
151
|
|
|
152 { ngx_string("X-Accel-Redirect"),
|
|
|
153 ngx_http_upstream_process_header_line,
|
|
|
154 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
|
|
|
155 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
156
|
|
76
|
157 { ngx_string("X-Accel-Limit-Rate"),
|
|
|
158 ngx_http_upstream_process_limit_rate, 0,
|
|
|
159 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
160
|
|
58
|
161 #if (NGX_HTTP_GZIP)
|
|
|
162 { ngx_string("Content-Encoding"),
|
|
|
163 ngx_http_upstream_process_header_line,
|
|
|
164 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
|
|
64
|
165 ngx_http_upstream_copy_content_encoding, 0, 0 },
|
|
58
|
166 #endif
|
|
|
167
|
|
64
|
168 { ngx_null_string, NULL, 0, NULL, 0, 0 }
|
|
58
|
169 };
|
|
28
|
170
|
|
|
171
|
|
|
172 ngx_http_module_t ngx_http_upstream_module_ctx = {
|
|
58
|
173 ngx_http_upstream_add_log_formats, /* preconfiguration */
|
|
|
174 NULL, /* postconfiguration */
|
|
|
175
|
|
|
176 ngx_http_upstream_create_main_conf, /* create main configuration */
|
|
|
177 ngx_http_core_init_main_conf, /* init main configuration */
|
|
28
|
178
|
|
|
179 NULL, /* create server configuration */
|
|
|
180 NULL, /* merge server configuration */
|
|
|
181
|
|
|
182 NULL, /* create location configuration */
|
|
|
183 NULL /* merge location configuration */
|
|
|
184 };
|
|
|
185
|
|
|
186
|
|
|
187 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
188 NGX_MODULE_V1,
|
|
28
|
189 &ngx_http_upstream_module_ctx, /* module context */
|
|
|
190 NULL, /* module directives */
|
|
|
191 NGX_HTTP_MODULE, /* module type */
|
|
90
|
192 NULL, /* init master */
|
|
28
|
193 NULL, /* init module */
|
|
90
|
194 NULL, /* init process */
|
|
|
195 NULL, /* init thread */
|
|
|
196 NULL, /* exit thread */
|
|
|
197 NULL, /* exit process */
|
|
|
198 NULL, /* exit master */
|
|
|
199 NGX_MODULE_V1_PADDING
|
|
28
|
200 };
|
|
|
201
|
|
|
202
|
|
|
203 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
|
|
|
204 { ngx_string("upstream_status"), 0, NULL,
|
|
|
205 ngx_http_upstream_log_status_getlen,
|
|
|
206 ngx_http_upstream_log_status },
|
|
|
207 { ngx_null_string, 0, NULL, NULL, NULL }
|
|
|
208 };
|
|
|
209
|
|
|
210
|
|
|
211 char *ngx_http_upstream_header_errors[] = {
|
|
|
212 "upstream sent invalid header",
|
|
|
213 "upstream sent too long header line"
|
|
|
214 };
|
|
|
215
|
|
|
216
|
|
36
|
217 void
|
|
|
218 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
219 {
|
|
58
|
220 ngx_connection_t *c;
|
|
|
221 ngx_http_upstream_t *u;
|
|
|
222 ngx_http_core_loc_conf_t *clcf;
|
|
28
|
223
|
|
|
224 c = r->connection;
|
|
|
225
|
|
|
226 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
227 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
228
|
|
|
229 if (c->read->timer_set) {
|
|
|
230 ngx_del_timer(c->read);
|
|
|
231 }
|
|
|
232
|
|
58
|
233 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
80
|
234 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
28
|
235
|
|
|
236 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
237
|
|
|
238 if (!c->write->active) {
|
|
80
|
239 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
240 == NGX_ERROR)
|
|
28
|
241 {
|
|
|
242 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
243 return;
|
|
|
244 }
|
|
|
245 }
|
|
|
246 }
|
|
|
247
|
|
|
248 u = r->upstream;
|
|
|
249
|
|
86
|
250 if (r->request_body) {
|
|
|
251 u->request_bufs = r->request_body->bufs;
|
|
|
252 }
|
|
58
|
253
|
|
|
254 if (u->conf->method == NGX_CONF_UNSET_UINT) {
|
|
|
255 u->method = r->method;
|
|
|
256
|
|
|
257 } else {
|
|
|
258 u->method = u->conf->method;
|
|
|
259 }
|
|
28
|
260
|
|
86
|
261 if (u->create_request(r) != NGX_OK) {
|
|
28
|
262 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
263 return;
|
|
|
264 }
|
|
|
265
|
|
|
266 u->peer.log = r->connection->log;
|
|
58
|
267 u->saved_log_handler = r->log_handler;
|
|
|
268 r->log_handler = ngx_http_upstream_log_error;
|
|
|
269
|
|
|
270 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
271
|
|
|
272 u->output.sendfile = r->connection->sendfile;
|
|
|
273 u->output.pool = r->pool;
|
|
|
274 u->output.bufs.num = 1;
|
|
58
|
275 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
276 u->output.output_filter = ngx_chain_writer;
|
|
|
277 u->output.filter_ctx = &u->writer;
|
|
|
278
|
|
|
279 u->writer.pool = r->pool;
|
|
|
280
|
|
|
281 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
50
|
282 sizeof(ngx_http_upstream_state_t)) != NGX_OK)
|
|
28
|
283 {
|
|
|
284 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
285 return;
|
|
|
286 }
|
|
|
287
|
|
50
|
288 u->state = ngx_array_push(&u->states);
|
|
|
289 if (u->state == NULL) {
|
|
28
|
290 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
291 return;
|
|
|
292 }
|
|
|
293
|
|
|
294 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
295
|
|
|
296 ngx_http_upstream_connect(r, u);
|
|
|
297 }
|
|
|
298
|
|
|
299
|
|
36
|
300 static void
|
|
58
|
301 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
302 {
|
|
|
303 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
304 }
|
|
|
305
|
|
|
306
|
|
|
307 static void
|
|
|
308 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
309 {
|
|
|
310 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
311 }
|
|
|
312
|
|
|
313
|
|
|
314 static void
|
|
|
315 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
316 ngx_event_t *ev)
|
|
28
|
317 {
|
|
|
318 int n;
|
|
|
319 char buf[1];
|
|
|
320 ngx_err_t err;
|
|
|
321 ngx_connection_t *c;
|
|
|
322 ngx_http_upstream_t *u;
|
|
|
323
|
|
76
|
324 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
325 "http upstream check client, write event:%d, \"%V\"",
|
|
|
326 ev->write, &r->uri);
|
|
28
|
327
|
|
58
|
328 c = r->connection;
|
|
32
|
329 u = r->upstream;
|
|
|
330
|
|
76
|
331 if (c->closed) {
|
|
|
332 ngx_http_upstream_finalize_request(r, u,
|
|
|
333 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
334 return;
|
|
|
335 }
|
|
|
336
|
|
32
|
337 if (u->peer.connection == NULL) {
|
|
|
338 return;
|
|
|
339 }
|
|
|
340
|
|
28
|
341 #if (NGX_HAVE_KQUEUE)
|
|
|
342
|
|
|
343 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
344
|
|
|
345 if (!ev->pending_eof) {
|
|
|
346 return;
|
|
|
347 }
|
|
|
348
|
|
|
349 ev->eof = 1;
|
|
76
|
350 c->closed = 1;
|
|
28
|
351
|
|
|
352 if (ev->kq_errno) {
|
|
|
353 ev->error = 1;
|
|
|
354 }
|
|
|
355
|
|
|
356 if (!u->cachable && u->peer.connection) {
|
|
|
357 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
358 "kevent() reported that client closed prematurely "
|
|
|
359 "connection, so upstream connection is closed too");
|
|
28
|
360 ngx_http_upstream_finalize_request(r, u,
|
|
|
361 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
362 return;
|
|
|
363 }
|
|
|
364
|
|
|
365 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
366 "kevent() reported that client closed "
|
|
|
367 "prematurely connection");
|
|
|
368
|
|
|
369 if (u->peer.connection == NULL) {
|
|
|
370 ngx_http_upstream_finalize_request(r, u,
|
|
|
371 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
372 return;
|
|
|
373 }
|
|
|
374
|
|
|
375 return;
|
|
|
376 }
|
|
|
377
|
|
|
378 #endif
|
|
|
379
|
|
|
380 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
381
|
|
|
382 err = ngx_socket_errno;
|
|
|
383
|
|
|
384 /*
|
|
|
385 * we do not need to disable the write event because
|
|
|
386 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
387 */
|
|
|
388
|
|
|
389 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
390 return;
|
|
|
391 }
|
|
|
392
|
|
|
393 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
394 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
395 ngx_http_upstream_finalize_request(r, u,
|
|
|
396 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
397 return;
|
|
|
398 }
|
|
|
399 }
|
|
|
400
|
|
|
401 if (n > 0) {
|
|
|
402 return;
|
|
|
403 }
|
|
|
404
|
|
|
405 if (n == -1) {
|
|
|
406 if (err == NGX_EAGAIN) {
|
|
|
407 return;
|
|
|
408 }
|
|
|
409
|
|
|
410 ev->error = 1;
|
|
|
411
|
|
32
|
412 } else { /* n == 0 */
|
|
28
|
413 err = 0;
|
|
|
414 }
|
|
|
415
|
|
78
|
416 ev->eof = 1;
|
|
|
417 c->closed = 1;
|
|
|
418
|
|
28
|
419 if (!u->cachable && u->peer.connection) {
|
|
|
420 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
421 "client closed prematurely connection, "
|
|
|
422 "so upstream connection is closed too");
|
|
|
423 ngx_http_upstream_finalize_request(r, u,
|
|
|
424 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
425 return;
|
|
|
426 }
|
|
|
427
|
|
|
428 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
429 "client closed prematurely connection");
|
|
|
430
|
|
|
431 if (u->peer.connection == NULL) {
|
|
|
432 ngx_http_upstream_finalize_request(r, u,
|
|
|
433 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
434 return;
|
|
|
435 }
|
|
|
436 }
|
|
|
437
|
|
|
438
|
|
36
|
439 static void
|
|
|
440 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
441 {
|
|
|
442 ngx_int_t rc;
|
|
|
443 ngx_connection_t *c;
|
|
|
444
|
|
32
|
445 r->connection->log->action = "connecting to upstream";
|
|
28
|
446
|
|
|
447 r->connection->single_connection = 0;
|
|
|
448
|
|
|
449 rc = ngx_event_connect_peer(&u->peer);
|
|
|
450
|
|
|
451 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
452 "http upstream connect: %i", rc);
|
|
|
453
|
|
|
454 if (rc == NGX_ERROR) {
|
|
|
455 ngx_http_upstream_finalize_request(r, u,
|
|
|
456 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
457 return;
|
|
|
458 }
|
|
|
459
|
|
|
460 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
|
461
|
|
|
462 if (rc == NGX_CONNECT_ERROR) {
|
|
|
463 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
464 return;
|
|
|
465 }
|
|
|
466
|
|
|
467 c = u->peer.connection;
|
|
|
468
|
|
|
469 c->data = r;
|
|
58
|
470 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
471 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
472
|
|
|
473 c->sendfile = r->connection->sendfile;
|
|
|
474
|
|
|
475 c->pool = r->pool;
|
|
|
476 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
477
|
|
|
478 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
479
|
|
|
480 u->writer.out = NULL;
|
|
|
481 u->writer.last = &u->writer.out;
|
|
|
482 u->writer.connection = c;
|
|
|
483 u->writer.limit = 0;
|
|
|
484
|
|
|
485 if (u->request_sent) {
|
|
58
|
486 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
487 ngx_http_upstream_finalize_request(r, u,
|
|
|
488 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
489 return;
|
|
|
490 }
|
|
28
|
491 }
|
|
|
492
|
|
58
|
493 if (r->request_body) {
|
|
|
494 if (r->request_body->temp_file && r->main == NULL) {
|
|
|
495
|
|
|
496 /*
|
|
|
497 * the r->request_body->buf can be reused for one request only,
|
|
|
498 * the subrequests should allocate their own temporay bufs
|
|
|
499 */
|
|
28
|
500
|
|
50
|
501 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
502 if (u->output.free == NULL) {
|
|
28
|
503 ngx_http_upstream_finalize_request(r, u,
|
|
|
504 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
505 return;
|
|
|
506 }
|
|
|
507
|
|
|
508 u->output.free->buf = r->request_body->buf;
|
|
|
509 u->output.free->next = NULL;
|
|
|
510 u->output.allocated = 1;
|
|
|
511
|
|
|
512 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
513 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
514 r->request_body->buf->tag = u->output.tag;
|
|
|
515 }
|
|
|
516 }
|
|
|
517
|
|
|
518 u->request_sent = 0;
|
|
|
519
|
|
|
520 if (rc == NGX_AGAIN) {
|
|
|
521 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
522 return;
|
|
|
523 }
|
|
|
524
|
|
|
525 /* rc == NGX_OK */
|
|
|
526
|
|
|
527 ngx_http_upstream_send_request(r, u);
|
|
|
528 }
|
|
|
529
|
|
|
530
|
|
58
|
531 static ngx_int_t
|
|
36
|
532 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
533 {
|
|
|
534 ngx_chain_t *cl;
|
|
|
535
|
|
58
|
536 if (u->reinit_request(r) != NGX_OK) {
|
|
|
537 return NGX_ERROR;
|
|
|
538 }
|
|
|
539
|
|
|
540 ngx_memzero(&r->upstream->headers_in,
|
|
|
541 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
542
|
|
|
543 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
544 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
|
545 {
|
|
|
546 return NGX_ERROR;
|
|
28
|
547 }
|
|
|
548
|
|
|
549 /* reinit the request chain */
|
|
|
550
|
|
58
|
551 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
552 cl->buf->pos = cl->buf->start;
|
|
|
553 cl->buf->file_pos = 0;
|
|
|
554 }
|
|
|
555
|
|
58
|
556 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
557
|
|
|
558 if (r->request_body) {
|
|
|
559 if (r->request_body->temp_file && r->main && u->output.buf) {
|
|
|
560
|
|
|
561 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
562 if (u->output.free == NULL) {
|
|
|
563 return NGX_ERROR;
|
|
|
564 }
|
|
|
565
|
|
|
566 u->output.free->buf = u->output.buf;
|
|
|
567 u->output.free->next = NULL;
|
|
|
568
|
|
|
569 u->output.buf->pos = u->output.buf->start;
|
|
|
570 u->output.buf->last = u->output.buf->start;
|
|
|
571 }
|
|
|
572 }
|
|
28
|
573
|
|
|
574 u->output.buf = NULL;
|
|
|
575 u->output.in = NULL;
|
|
|
576 u->output.busy = NULL;
|
|
|
577
|
|
|
578 /* reinit u->header_in buffer */
|
|
|
579
|
|
|
580 #if 0
|
|
|
581 if (u->cache) {
|
|
|
582 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
|
|
|
583 u->header_in.last = u->header_in.pos;
|
|
|
584
|
|
|
585 } else {
|
|
|
586 u->header_in.pos = u->header_in.start;
|
|
|
587 u->header_in.last = u->header_in.start;
|
|
|
588 }
|
|
|
589 #else
|
|
58
|
590
|
|
28
|
591 u->header_in.pos = u->header_in.start;
|
|
|
592 u->header_in.last = u->header_in.start;
|
|
58
|
593
|
|
28
|
594 #endif
|
|
|
595
|
|
|
596 /* add one more state */
|
|
|
597
|
|
50
|
598 u->state = ngx_array_push(&u->states);
|
|
|
599 if (u->state == NULL) {
|
|
58
|
600 return NGX_ERROR;
|
|
28
|
601 }
|
|
|
602
|
|
|
603 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
604
|
|
|
605 return NGX_OK;
|
|
28
|
606 }
|
|
|
607
|
|
|
608
|
|
36
|
609 static void
|
|
|
610 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
611 {
|
|
32
|
612 int rc;
|
|
|
613 ngx_connection_t *c;
|
|
28
|
614
|
|
|
615 c = u->peer.connection;
|
|
|
616
|
|
|
617 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
618 "http upstream send request");
|
|
|
619
|
|
|
620 #if (NGX_HAVE_KQUEUE)
|
|
|
621
|
|
|
622 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
623 && !u->request_sent
|
|
|
624 && c->write->pending_eof)
|
|
|
625 {
|
|
86
|
626 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
627 "kevent() reported that connect() failed");
|
|
28
|
628 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
629 return;
|
|
|
630 }
|
|
|
631
|
|
|
632 #endif
|
|
|
633
|
|
32
|
634 c->log->action = "sending request to upstream";
|
|
28
|
635
|
|
58
|
636 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
637
|
|
|
638 u->request_sent = 1;
|
|
|
639
|
|
|
640 if (rc == NGX_ERROR) {
|
|
|
641 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
642 return;
|
|
|
643 }
|
|
|
644
|
|
|
645 if (c->write->timer_set) {
|
|
|
646 ngx_del_timer(c->write);
|
|
|
647 }
|
|
|
648
|
|
|
649 if (rc == NGX_AGAIN) {
|
|
|
650 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
651
|
|
|
652 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
653 {
|
|
|
654 ngx_http_upstream_finalize_request(r, u,
|
|
|
655 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
656 return;
|
|
|
657 }
|
|
|
658
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
|
662 /* rc == NGX_OK */
|
|
|
663
|
|
|
664 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
665 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
666 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
667 ngx_tcp_push_n " failed");
|
|
|
668 ngx_http_upstream_finalize_request(r, u,
|
|
|
669 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
670 return;
|
|
|
671 }
|
|
|
672
|
|
|
673 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
674 return;
|
|
|
675 }
|
|
|
676
|
|
|
677 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
678
|
|
|
679 #if 1
|
|
|
680 if (c->read->ready) {
|
|
|
681
|
|
|
682 /* post aio operation */
|
|
|
683
|
|
|
684 /*
|
|
|
685 * TODO comment
|
|
|
686 * although we can post aio operation just in the end
|
|
|
687 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
688 * it's better to do here because we postpone header buffer allocation
|
|
|
689 */
|
|
|
690
|
|
|
691 ngx_http_upstream_process_header(c->read);
|
|
|
692 return;
|
|
|
693 }
|
|
|
694 #endif
|
|
|
695
|
|
58
|
696 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
697
|
|
58
|
698 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
699 ngx_http_upstream_finalize_request(r, u,
|
|
|
700 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
701 return;
|
|
|
702 }
|
|
|
703 }
|
|
|
704
|
|
|
705
|
|
36
|
706 static void
|
|
|
707 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
708 {
|
|
|
709 ngx_connection_t *c;
|
|
|
710 ngx_http_request_t *r;
|
|
|
711 ngx_http_upstream_t *u;
|
|
|
712
|
|
|
713 c = wev->data;
|
|
|
714 r = c->data;
|
|
|
715 u = r->upstream;
|
|
|
716
|
|
|
717 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
718 "http upstream send request handler");
|
|
|
719
|
|
|
720 if (wev->timedout) {
|
|
32
|
721 c->log->action = "sending request to upstream";
|
|
28
|
722 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
723 return;
|
|
|
724 }
|
|
|
725
|
|
|
726 ngx_http_upstream_send_request(r, u);
|
|
|
727 }
|
|
|
728
|
|
|
729
|
|
36
|
730 static void
|
|
|
731 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
732 {
|
|
64
|
733 ssize_t n;
|
|
|
734 ngx_int_t rc;
|
|
|
735 ngx_uint_t i, key;
|
|
|
736 ngx_list_part_t *part;
|
|
|
737 ngx_table_elt_t *h;
|
|
|
738 ngx_connection_t *c;
|
|
|
739 ngx_http_request_t *r;
|
|
|
740 ngx_http_upstream_t *u;
|
|
|
741 ngx_http_err_page_t *err_page;
|
|
|
742 ngx_http_core_loc_conf_t *clcf;
|
|
|
743 ngx_http_upstream_header_t *hh;
|
|
|
744 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
745
|
|
|
746 c = rev->data;
|
|
|
747 r = c->data;
|
|
|
748 u = r->upstream;
|
|
|
749
|
|
|
750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
751 "http upstream process header");
|
|
28
|
752
|
|
32
|
753 c->log->action = "reading response header from upstream";
|
|
28
|
754
|
|
|
755 if (rev->timedout) {
|
|
|
756 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
757 return;
|
|
|
758 }
|
|
|
759
|
|
|
760 if (u->header_in.start == NULL) {
|
|
|
761 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
762 if (u->header_in.start == NULL) {
|
|
|
763 ngx_http_upstream_finalize_request(r, u,
|
|
|
764 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
765 return;
|
|
|
766 }
|
|
|
767
|
|
|
768 u->header_in.pos = u->header_in.start;
|
|
|
769 u->header_in.last = u->header_in.start;
|
|
32
|
770 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
771 u->header_in.temporary = 1;
|
|
|
772
|
|
|
773 u->header_in.tag = u->output.tag;
|
|
|
774
|
|
58
|
775 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
776 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
777 {
|
|
|
778 ngx_http_upstream_finalize_request(r, u,
|
|
|
779 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
780 return;
|
|
|
781 }
|
|
|
782
|
|
28
|
783 #if 0
|
|
|
784 if (u->cache) {
|
|
|
785 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
786 u->header_in.last = u->header_in.pos;
|
|
|
787 }
|
|
|
788 #endif
|
|
|
789 }
|
|
|
790
|
|
|
791 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
792 u->header_in.end - u->header_in.last);
|
|
|
793
|
|
|
794 if (n == NGX_AGAIN) {
|
|
|
795 #if 0
|
|
|
796 ngx_add_timer(rev, u->read_timeout);
|
|
|
797 #endif
|
|
|
798
|
|
|
799 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
800 ngx_http_upstream_finalize_request(r, u,
|
|
|
801 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
802 return;
|
|
|
803 }
|
|
|
804
|
|
|
805 return;
|
|
|
806 }
|
|
|
807
|
|
|
808 if (n == 0) {
|
|
|
809 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
810 "upstream prematurely closed connection");
|
|
|
811 }
|
|
|
812
|
|
|
813 if (n == NGX_ERROR || n == 0) {
|
|
|
814 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
815 return;
|
|
|
816 }
|
|
|
817
|
|
|
818 u->header_in.last += n;
|
|
|
819
|
|
|
820 #if 0
|
|
|
821 u->valid_header_in = 0;
|
|
|
822
|
|
|
823 u->peer.cached = 0;
|
|
|
824 #endif
|
|
|
825
|
|
|
826 rc = u->process_header(r);
|
|
|
827
|
|
|
828 if (rc == NGX_AGAIN) {
|
|
|
829 #if 0
|
|
|
830 ngx_add_timer(rev, u->read_timeout);
|
|
|
831 #endif
|
|
|
832
|
|
58
|
833 if (u->header_in.pos == u->header_in.end) {
|
|
28
|
834 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
835 "upstream sent too big header");
|
|
|
836
|
|
|
837 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
838 return;
|
|
|
839 }
|
|
|
840
|
|
|
841 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
842 ngx_http_upstream_finalize_request(r, u,
|
|
|
843 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
844 return;
|
|
|
845 }
|
|
|
846
|
|
|
847 return;
|
|
|
848 }
|
|
|
849
|
|
|
850 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
851 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
852 return;
|
|
|
853 }
|
|
|
854
|
|
|
855 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
856 ngx_http_upstream_finalize_request(r, u,
|
|
|
857 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
858 return;
|
|
|
859 }
|
|
|
860
|
|
|
861 /* rc == NGX_OK */
|
|
|
862
|
|
78
|
863 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
864
|
|
|
865 if (u->peer.tries > 1
|
|
|
866 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
867 {
|
|
|
868 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
869 return;
|
|
|
870 }
|
|
|
871
|
|
|
872 #if (NGX_HTTP_CACHE)
|
|
|
873
|
|
|
874 if (u->peer.tries == 0
|
|
|
875 && u->stale
|
|
|
876 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
877 {
|
|
|
878 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
879 ngx_http_send_cached_response(r));
|
|
58
|
880 return;
|
|
|
881 }
|
|
|
882
|
|
|
883 #endif
|
|
|
884 }
|
|
|
885
|
|
78
|
886 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
58
|
887 && u->peer.tries > 1
|
|
|
888 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
889 {
|
|
|
890 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
891 return;
|
|
|
892 }
|
|
|
893
|
|
|
894
|
|
78
|
895 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
896 && u->conf->redirect_errors
|
|
|
897 && r->err_ctx == NULL)
|
|
|
898 {
|
|
|
899 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
900
|
|
|
901 if (clcf->error_pages) {
|
|
|
902
|
|
|
903 err_page = clcf->error_pages->elts;
|
|
|
904 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
905 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
906
|
|
|
907 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
908
|
|
|
909 r->headers_out.www_authenticate =
|
|
|
910 ngx_list_push(&r->headers_out.headers);
|
|
|
911
|
|
|
912 if (r->headers_out.www_authenticate == NULL) {
|
|
|
913 ngx_http_upstream_finalize_request(r, u,
|
|
|
914 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
915 return;
|
|
|
916 }
|
|
|
917
|
|
|
918 *r->headers_out.www_authenticate =
|
|
|
919 *u->headers_in.www_authenticate;
|
|
|
920 }
|
|
|
921
|
|
36
|
922 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
923 u->headers_in.status_n);
|
|
36
|
924 return;
|
|
|
925 }
|
|
|
926 }
|
|
|
927 }
|
|
|
928 }
|
|
|
929
|
|
64
|
930 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
931 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
932
|
|
|
933 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
934 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
935
|
|
|
936 part = &r->upstream->headers_in.headers.part;
|
|
|
937 h = part->elts;
|
|
|
938
|
|
|
939 for (i = 0; /* void */; i++) {
|
|
|
940
|
|
|
941 if (i >= part->nelts) {
|
|
|
942 if (part->next == NULL) {
|
|
|
943 break;
|
|
|
944 }
|
|
|
945
|
|
|
946 part = part->next;
|
|
|
947 h = part->elts;
|
|
|
948 i = 0;
|
|
|
949 }
|
|
|
950
|
|
|
951 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
952
|
|
|
953 if (hh[key].redirect
|
|
|
954 && hh[key].name.len == h[i].key.len
|
|
|
955 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
956 {
|
|
|
957 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
958 ngx_http_upstream_finalize_request(r, u,
|
|
|
959 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
960 return;
|
|
|
961 }
|
|
|
962
|
|
|
963 }
|
|
|
964 }
|
|
|
965
|
|
|
966 ngx_http_internal_redirect(r,
|
|
|
967 &r->upstream->headers_in.x_accel_redirect->value,
|
|
|
968 NULL);
|
|
|
969 return;
|
|
|
970 }
|
|
|
971
|
|
28
|
972 ngx_http_upstream_send_response(r, u);
|
|
|
973 }
|
|
|
974
|
|
|
975
|
|
36
|
976 static void
|
|
|
977 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
978 {
|
|
58
|
979 ngx_int_t rc;
|
|
|
980 ngx_uint_t i, key;
|
|
|
981 ngx_list_part_t *part;
|
|
|
982 ngx_table_elt_t *h;
|
|
|
983 ngx_event_pipe_t *p;
|
|
|
984 ngx_http_core_loc_conf_t *clcf;
|
|
|
985 ngx_http_upstream_header_t *hh;
|
|
|
986 ngx_http_upstream_main_conf_t *umcf;
|
|
|
987
|
|
|
988 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
989 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
990
|
|
|
991 part = &r->upstream->headers_in.headers.part;
|
|
|
992 h = part->elts;
|
|
|
993
|
|
|
994 for (i = 0; /* void */; i++) {
|
|
28
|
995
|
|
58
|
996 if (i >= part->nelts) {
|
|
|
997 if (part->next == NULL) {
|
|
|
998 break;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 part = part->next;
|
|
|
1002 h = part->elts;
|
|
|
1003 i = 0;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1007
|
|
|
1008 if (hh[key].name.len == h[i].key.len
|
|
|
1009 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1010 {
|
|
|
1011 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1012 ngx_http_upstream_finalize_request(r, u,
|
|
|
1013 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1014 return;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 continue;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1021 ngx_http_upstream_finalize_request(r, u,
|
|
|
1022 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1023 return;
|
|
|
1024 }
|
|
|
1025 }
|
|
|
1026
|
|
78
|
1027 r->headers_out.status = u->headers_in.status_n;
|
|
|
1028 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1029
|
|
58
|
1030 rc = ngx_http_send_header(r);
|
|
28
|
1031
|
|
34
|
1032 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
1033 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1034 return;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 u->header_sent = 1;
|
|
|
1038
|
|
|
1039 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1040
|
|
|
1041 #if 0
|
|
|
1042
|
|
|
1043 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1044 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
1045 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
1046 ngx_close_file_n " \"%s\" failed",
|
|
|
1047 u->cache->ctx.file.name.data);
|
|
|
1048 }
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 if (u->cachable) {
|
|
|
1052 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
1053
|
|
|
1054 header->expires = u->cache->ctx.expires;
|
|
|
1055 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1056 header->date = u->cache->ctx.date;
|
|
|
1057 header->length = r->headers_out.content_length_n;
|
|
|
1058 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1059
|
|
|
1060 header->key_len = u->cache->ctx.key0.len;
|
|
|
1061 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1062 header->key[header->key_len] = LF;
|
|
|
1063 }
|
|
|
1064
|
|
|
1065 #endif
|
|
|
1066
|
|
|
1067 p = &u->pipe;
|
|
|
1068
|
|
|
1069 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1070 p->output_ctx = r;
|
|
|
1071 p->tag = u->output.tag;
|
|
|
1072 p->bufs = u->conf->bufs;
|
|
|
1073 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1074 p->upstream = u->peer.connection;
|
|
|
1075 p->downstream = r->connection;
|
|
|
1076 p->pool = r->pool;
|
|
|
1077 p->log = r->connection->log;
|
|
|
1078
|
|
|
1079 p->cachable = u->cachable;
|
|
|
1080
|
|
50
|
1081 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1082 if (p->temp_file == NULL) {
|
|
28
|
1083 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1084 return;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
1088 p->temp_file->file.log = r->connection->log;
|
|
|
1089 p->temp_file->path = u->conf->temp_path;
|
|
|
1090 p->temp_file->pool = r->pool;
|
|
|
1091
|
|
|
1092 if (u->cachable) {
|
|
|
1093 p->temp_file->persistent = 1;
|
|
|
1094 } else {
|
|
|
1095 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1096 "to a temporary file";
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1100 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1101
|
|
50
|
1102 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1103 if (p->preread_bufs == NULL) {
|
|
28
|
1104 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1105 return;
|
|
|
1106 }
|
|
|
1107 p->preread_bufs->buf = &u->header_in;
|
|
|
1108 p->preread_bufs->next = NULL;
|
|
|
1109 u->header_in.recycled = 1;
|
|
|
1110
|
|
|
1111 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
1112
|
|
|
1113 if (u->cachable) {
|
|
|
1114 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1115 if (p->buf_to_file == NULL) {
|
|
|
1116 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1117 return;
|
|
|
1118 }
|
|
|
1119 p->buf_to_file->pos = u->header_in.start;
|
|
|
1120 p->buf_to_file->last = u->header_in.pos;
|
|
|
1121 p->buf_to_file->temporary = 1;
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1125 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1126 p->single_buf = 1;
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1130 p->free_bufs = 1;
|
|
|
1131
|
|
|
1132 /*
|
|
|
1133 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
1134 * as though these bytes were read
|
|
|
1135 */
|
|
|
1136 u->header_in.last = u->header_in.pos;
|
|
|
1137
|
|
|
1138 if (u->conf->cyclic_temp_file) {
|
|
|
1139
|
|
|
1140 /*
|
|
|
1141 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1142 * because the writing a new data may interfere with sendfile()
|
|
|
1143 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1144 */
|
|
|
1145
|
|
|
1146 p->cyclic_temp_file = 1;
|
|
|
1147 r->connection->sendfile = 0;
|
|
|
1148
|
|
|
1149 } else {
|
|
|
1150 p->cyclic_temp_file = 0;
|
|
|
1151 }
|
|
|
1152
|
|
|
1153 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1154
|
|
|
1155 p->read_timeout = u->conf->read_timeout;
|
|
|
1156 p->send_timeout = clcf->send_timeout;
|
|
|
1157 p->send_lowat = clcf->send_lowat;
|
|
|
1158
|
|
58
|
1159 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1160 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1161
|
|
|
1162 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1163 }
|
|
|
1164
|
|
|
1165
|
|
36
|
1166 static void
|
|
58
|
1167 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1168 {
|
|
|
1169 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1170 }
|
|
|
1171
|
|
|
1172
|
|
|
1173 static void
|
|
36
|
1174 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1175 {
|
|
58
|
1176 ngx_event_pipe_t *p;
|
|
28
|
1177 ngx_connection_t *c;
|
|
|
1178 ngx_http_request_t *r;
|
|
|
1179 ngx_http_upstream_t *u;
|
|
|
1180
|
|
|
1181 c = ev->data;
|
|
|
1182 r = c->data;
|
|
|
1183 u = r->upstream;
|
|
|
1184
|
|
|
1185 if (ev->write) {
|
|
32
|
1186 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1187 "http upstream process downstream");
|
|
|
1188 c->log->action = "sending to client";
|
|
28
|
1189
|
|
|
1190 } else {
|
|
32
|
1191 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1192 "http upstream process upstream");
|
|
|
1193 c->log->action = "reading upstream";
|
|
28
|
1194 }
|
|
|
1195
|
|
|
1196 p = &u->pipe;
|
|
|
1197
|
|
|
1198 if (ev->timedout) {
|
|
|
1199 if (ev->write) {
|
|
76
|
1200 if (ev->delayed) {
|
|
|
1201
|
|
|
1202 ev->timedout = 0;
|
|
|
1203 ev->delayed = 0;
|
|
|
1204
|
|
|
1205 if (!ev->ready) {
|
|
|
1206 ngx_add_timer(ev, p->send_timeout);
|
|
|
1207
|
|
|
1208 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1209 {
|
|
|
1210 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1211 return;
|
|
|
1212 }
|
|
|
1213
|
|
|
1214 return;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1218 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1219 return;
|
|
|
1220 }
|
|
|
1221
|
|
|
1222 } else {
|
|
|
1223 p->downstream_error = 1;
|
|
|
1224 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1225 "client timed out");
|
|
|
1226 }
|
|
28
|
1227
|
|
|
1228 } else {
|
|
|
1229 p->upstream_error = 1;
|
|
|
1230 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1231 "upstream timed out");
|
|
|
1232 }
|
|
|
1233
|
|
|
1234 } else {
|
|
76
|
1235 if (ev->write && ev->delayed) {
|
|
|
1236 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1237 "http downstream delayed");
|
|
|
1238
|
|
|
1239 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1240 return;
|
|
|
1241 }
|
|
|
1242
|
|
|
1243 return;
|
|
|
1244 }
|
|
|
1245
|
|
28
|
1246 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1247 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1248 return;
|
|
|
1249 }
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 if (u->peer.connection) {
|
|
|
1253
|
|
|
1254 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1255
|
|
|
1256 if (p->upstream_done && u->cachable) {
|
|
|
1257 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1258 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1259 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1260 return;
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 } else if (p->upstream_eof && u->cachable) {
|
|
|
1264
|
|
|
1265 /* TODO: check length & update cache */
|
|
|
1266
|
|
|
1267 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1268 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1269 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1270 return;
|
|
|
1271 }
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 #endif
|
|
|
1275
|
|
|
1276 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1277 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1278 "http upstream exit: %p", p->out);
|
|
28
|
1279 #if 0
|
|
|
1280 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1281 #endif
|
|
|
1282 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1283 return;
|
|
|
1284 }
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 if (p->downstream_error) {
|
|
32
|
1288 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1289 "http upstream downstream error");
|
|
28
|
1290
|
|
|
1291 if (!u->cachable && u->peer.connection) {
|
|
|
1292 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1293 }
|
|
|
1294 }
|
|
|
1295 }
|
|
|
1296
|
|
|
1297
|
|
36
|
1298 static void
|
|
|
1299 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1300 {
|
|
|
1301 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1302 "http upstream dummy handler");
|
|
|
1303 }
|
|
|
1304
|
|
|
1305
|
|
36
|
1306 static void
|
|
|
1307 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1308 ngx_uint_t ft_type)
|
|
28
|
1309 {
|
|
74
|
1310 ngx_uint_t status, down;
|
|
28
|
1311
|
|
|
1312 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1313 "http next upstream, %xD", ft_type);
|
|
|
1314
|
|
|
1315 #if 0
|
|
|
1316 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1317 #endif
|
|
|
1318
|
|
74
|
1319 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1320 down = 0;
|
|
|
1321 } else {
|
|
|
1322 down = 1;
|
|
28
|
1323 }
|
|
74
|
1324
|
|
|
1325 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1326
|
|
28
|
1327 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1328 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1329 "upstream timed out");
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1333 status = 0;
|
|
|
1334
|
|
|
1335 } else {
|
|
|
1336 switch(ft_type) {
|
|
|
1337
|
|
|
1338 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1339 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1340 break;
|
|
|
1341
|
|
|
1342 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1343 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1344 break;
|
|
|
1345
|
|
|
1346 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1347 status = NGX_HTTP_NOT_FOUND;
|
|
|
1348 break;
|
|
|
1349
|
|
|
1350 /*
|
|
|
1351 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1352 * never reach here
|
|
|
1353 */
|
|
|
1354
|
|
|
1355 default:
|
|
|
1356 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1357 }
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 if (r->connection->write->eof) {
|
|
76
|
1361 r->connection->closed = 1;
|
|
28
|
1362 ngx_http_upstream_finalize_request(r, u,
|
|
|
1363 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1364 return;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 if (status) {
|
|
|
1368 u->state->status = status;
|
|
|
1369
|
|
74
|
1370 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1371
|
|
|
1372 #if (NGX_HTTP_CACHE)
|
|
|
1373
|
|
|
1374 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1375 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1376 ngx_http_send_cached_response(r));
|
|
28
|
1377 return;
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 #endif
|
|
|
1381
|
|
|
1382 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1383 return;
|
|
|
1384 }
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 if (u->peer.connection) {
|
|
|
1388 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1389 "close http upstream connection: %d",
|
|
|
1390 u->peer.connection->fd);
|
|
|
1391
|
|
|
1392 ngx_close_connection(u->peer.connection);
|
|
|
1393 }
|
|
|
1394
|
|
|
1395 #if 0
|
|
|
1396 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1397 ngx_http_upstream_busy_lock(p);
|
|
|
1398 return;
|
|
|
1399 }
|
|
|
1400 #endif
|
|
|
1401
|
|
|
1402 ngx_http_upstream_connect(r, u);
|
|
|
1403 }
|
|
|
1404
|
|
|
1405
|
|
36
|
1406 static void
|
|
|
1407 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1408 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1409 {
|
|
32
|
1410 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1411 "finalize http upstream request: %i", rc);
|
|
28
|
1412
|
|
|
1413 u->finalize_request(r, rc);
|
|
|
1414
|
|
|
1415 if (u->peer.connection) {
|
|
|
1416 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1417 "close http upstream connection: %d",
|
|
|
1418 u->peer.connection->fd);
|
|
|
1419
|
|
|
1420 ngx_close_connection(u->peer.connection);
|
|
|
1421 }
|
|
|
1422
|
|
32
|
1423 u->peer.connection = NULL;
|
|
|
1424
|
|
28
|
1425 if (u->header_sent
|
|
|
1426 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
1427 {
|
|
|
1428 rc = 0;
|
|
|
1429 }
|
|
|
1430
|
|
30
|
1431 if (u->pipe.temp_file) {
|
|
28
|
1432 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1433 "http upstream temp fd: %d",
|
|
|
1434 u->pipe.temp_file->file.fd);
|
|
|
1435 }
|
|
|
1436
|
|
|
1437 #if 0
|
|
|
1438 if (u->cache) {
|
|
|
1439 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1440 "http upstream cache fd: %d",
|
|
28
|
1441 u->cache->ctx.file.fd);
|
|
|
1442 }
|
|
|
1443 #endif
|
|
|
1444
|
|
58
|
1445 r->log_handler = u->saved_log_handler;
|
|
64
|
1446
|
|
|
1447 if (rc == NGX_DECLINED) {
|
|
|
1448 return;
|
|
|
1449 }
|
|
|
1450
|
|
32
|
1451 r->connection->log->action = "sending to client";
|
|
|
1452
|
|
28
|
1453 if (rc == 0 && r->main == NULL) {
|
|
|
1454 rc = ngx_http_send_last(r);
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 ngx_http_finalize_request(r, rc);
|
|
|
1458 }
|
|
|
1459
|
|
|
1460
|
|
58
|
1461 static ngx_int_t
|
|
|
1462 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1463 ngx_uint_t offset)
|
|
|
1464 {
|
|
|
1465 ngx_table_elt_t **ph;
|
|
|
1466
|
|
|
1467 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1468
|
|
|
1469 if (*ph == NULL) {
|
|
|
1470 *ph = h;
|
|
|
1471 }
|
|
|
1472
|
|
|
1473 return NGX_OK;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476
|
|
|
1477 static ngx_int_t
|
|
|
1478 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
1479 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1480 {
|
|
|
1481 ngx_array_t *pa;
|
|
|
1482 ngx_table_elt_t **ph;
|
|
|
1483
|
|
|
1484 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
1485
|
|
|
1486 if (pa->elts == NULL) {
|
|
|
1487 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1488 {
|
|
|
1489 return NGX_ERROR;
|
|
|
1490 }
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 ph = ngx_array_push(pa);
|
|
|
1494 if (ph == NULL) {
|
|
|
1495 return NGX_ERROR;
|
|
|
1496 }
|
|
|
1497
|
|
|
1498 *ph = h;
|
|
|
1499
|
|
|
1500 return NGX_OK;
|
|
|
1501 }
|
|
|
1502
|
|
|
1503
|
|
|
1504 static ngx_int_t
|
|
|
1505 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1506 ngx_uint_t offset)
|
|
|
1507 {
|
|
|
1508 return NGX_OK;
|
|
|
1509 }
|
|
|
1510
|
|
|
1511
|
|
|
1512 static ngx_int_t
|
|
76
|
1513 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1514 ngx_uint_t offset)
|
|
|
1515 {
|
|
|
1516 ngx_int_t n;
|
|
|
1517
|
|
|
1518 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
1519
|
|
|
1520 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
1521
|
|
|
1522 if (n != NGX_ERROR) {
|
|
|
1523 r->limit_rate = (size_t) n;
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 return NGX_OK;
|
|
|
1527 }
|
|
|
1528
|
|
|
1529
|
|
|
1530 static ngx_int_t
|
|
58
|
1531 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1532 ngx_uint_t offset)
|
|
|
1533 {
|
|
|
1534 ngx_table_elt_t *ho;
|
|
|
1535
|
|
|
1536 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1537 if (ho == NULL) {
|
|
|
1538 return NGX_ERROR;
|
|
|
1539 }
|
|
|
1540
|
|
|
1541 *ho = *h;
|
|
|
1542
|
|
|
1543 return NGX_OK;
|
|
|
1544 }
|
|
|
1545
|
|
|
1546
|
|
|
1547 static ngx_int_t
|
|
|
1548 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
1549 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1550 {
|
|
|
1551 ngx_flag_t *f;
|
|
|
1552 ngx_table_elt_t *ho;
|
|
|
1553
|
|
|
1554 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
1555
|
|
|
1556 if (*f == 0) {
|
|
|
1557 return NGX_OK;
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1561 if (ho == NULL) {
|
|
|
1562 return NGX_ERROR;
|
|
|
1563 }
|
|
|
1564
|
|
|
1565 *ho = *h;
|
|
|
1566
|
|
|
1567 return NGX_OK;
|
|
|
1568 }
|
|
|
1569
|
|
|
1570
|
|
|
1571 static ngx_int_t
|
|
|
1572 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
1573 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1574 {
|
|
|
1575 ngx_array_t *pa;
|
|
|
1576 ngx_table_elt_t *ho, **ph;
|
|
|
1577
|
|
|
1578 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
1579
|
|
|
1580 if (pa->elts == NULL) {
|
|
|
1581 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1582 {
|
|
|
1583 return NGX_ERROR;
|
|
|
1584 }
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 ph = ngx_array_push(pa);
|
|
|
1588 if (ph == NULL) {
|
|
|
1589 return NGX_ERROR;
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1593 if (ho == NULL) {
|
|
|
1594 return NGX_ERROR;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 *ho = *h;
|
|
|
1598 *ph = ho;
|
|
|
1599
|
|
|
1600 return NGX_OK;
|
|
|
1601 }
|
|
|
1602
|
|
|
1603
|
|
|
1604 static ngx_int_t
|
|
|
1605 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1606 ngx_uint_t offset)
|
|
|
1607 {
|
|
|
1608 r->headers_out.content_type = h->value;
|
|
|
1609
|
|
|
1610 return NGX_OK;
|
|
|
1611 }
|
|
|
1612
|
|
|
1613
|
|
|
1614 static ngx_int_t
|
|
|
1615 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1616 ngx_uint_t offset)
|
|
|
1617 {
|
|
|
1618 ngx_table_elt_t *ho;
|
|
|
1619
|
|
|
1620 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1621 if (ho == NULL) {
|
|
|
1622 return NGX_ERROR;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 *ho = *h;
|
|
|
1626
|
|
|
1627 r->headers_out.content_length = ho;
|
|
|
1628 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
1629
|
|
|
1630 return NGX_OK;
|
|
|
1631 }
|
|
|
1632
|
|
|
1633
|
|
|
1634 static ngx_int_t
|
|
|
1635 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1636 ngx_uint_t offset)
|
|
|
1637 {
|
|
|
1638 ngx_int_t rc;
|
|
|
1639 ngx_table_elt_t *ho;
|
|
|
1640
|
|
|
1641 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1642 if (ho == NULL) {
|
|
|
1643 return NGX_ERROR;
|
|
|
1644 }
|
|
|
1645
|
|
|
1646 *ho = *h;
|
|
|
1647
|
|
|
1648 if (r->upstream->rewrite_redirect) {
|
|
|
1649 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
1650
|
|
78
|
1651 if (rc == NGX_DECLINED) {
|
|
|
1652 return NGX_OK;
|
|
|
1653 }
|
|
|
1654
|
|
58
|
1655 if (rc == NGX_OK) {
|
|
|
1656 r->headers_out.location = ho;
|
|
|
1657
|
|
|
1658 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1659 "rewritten location: \"%V\"", &ho->value);
|
|
|
1660 }
|
|
|
1661
|
|
|
1662 return rc;
|
|
|
1663 }
|
|
|
1664
|
|
|
1665 /*
|
|
|
1666 * we do not set r->headers_out.location here to avoid the handling
|
|
|
1667 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
1668 */
|
|
|
1669
|
|
|
1670 return NGX_OK;
|
|
|
1671 }
|
|
|
1672
|
|
|
1673
|
|
|
1674 static ngx_int_t
|
|
|
1675 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1676 ngx_uint_t offset)
|
|
|
1677 {
|
|
|
1678 u_char *p;
|
|
|
1679 ngx_int_t rc;
|
|
|
1680 ngx_table_elt_t *ho;
|
|
|
1681
|
|
|
1682 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1683 if (ho == NULL) {
|
|
|
1684 return NGX_ERROR;
|
|
|
1685 }
|
|
|
1686
|
|
|
1687 *ho = *h;
|
|
|
1688
|
|
|
1689 if (r->upstream->rewrite_redirect) {
|
|
|
1690
|
|
|
1691 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
1692
|
|
|
1693 if (p) {
|
|
|
1694 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
1695
|
|
|
1696 } else {
|
|
|
1697 return NGX_OK;
|
|
|
1698 }
|
|
|
1699
|
|
78
|
1700 if (rc == NGX_DECLINED) {
|
|
|
1701 return NGX_OK;
|
|
|
1702 }
|
|
|
1703
|
|
58
|
1704 #if (NGX_DEBUG)
|
|
|
1705 if (rc == NGX_OK) {
|
|
|
1706 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1707 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
1708 }
|
|
|
1709 #endif
|
|
|
1710
|
|
|
1711 return rc;
|
|
|
1712 }
|
|
|
1713
|
|
|
1714 return NGX_OK;
|
|
|
1715 }
|
|
|
1716
|
|
|
1717
|
|
|
1718 #if (NGX_HTTP_GZIP)
|
|
|
1719
|
|
|
1720 static ngx_int_t
|
|
|
1721 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
1722 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1723 {
|
|
|
1724 ngx_table_elt_t *ho;
|
|
|
1725
|
|
|
1726 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1727 if (ho == NULL) {
|
|
|
1728 return NGX_ERROR;
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 *ho = *h;
|
|
|
1732
|
|
|
1733 r->headers_out.content_encoding = ho;
|
|
|
1734
|
|
|
1735 return NGX_OK;
|
|
|
1736 }
|
|
|
1737
|
|
|
1738 #endif
|
|
|
1739
|
|
|
1740
|
|
36
|
1741 static size_t
|
|
|
1742 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
1743 {
|
|
|
1744 if (r->upstream) {
|
|
|
1745 return r->upstream->states.nelts * (3 + 2);
|
|
|
1746 }
|
|
|
1747
|
|
|
1748 return 1;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751
|
|
36
|
1752 static u_char *
|
|
|
1753 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1754 ngx_http_log_op_t *op)
|
|
28
|
1755 {
|
|
|
1756 ngx_uint_t i;
|
|
|
1757 ngx_http_upstream_t *u;
|
|
|
1758 ngx_http_upstream_state_t *state;
|
|
|
1759
|
|
|
1760 u = r->upstream;
|
|
|
1761
|
|
|
1762 if (u == NULL) {
|
|
|
1763 *buf = '-';
|
|
|
1764 return buf + 1;
|
|
|
1765 }
|
|
|
1766
|
|
|
1767 i = 0;
|
|
|
1768 state = u->states.elts;
|
|
|
1769
|
|
|
1770 for ( ;; ) {
|
|
|
1771 if (state[i].status == 0) {
|
|
|
1772 *buf++ = '-';
|
|
|
1773
|
|
|
1774 } else {
|
|
|
1775 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1776 }
|
|
|
1777
|
|
|
1778 if (++i == u->states.nelts) {
|
|
|
1779 return buf;
|
|
|
1780 }
|
|
|
1781
|
|
|
1782 *buf++ = ',';
|
|
|
1783 *buf++ = ' ';
|
|
|
1784 }
|
|
|
1785 }
|
|
|
1786
|
|
|
1787
|
|
58
|
1788 static u_char *
|
|
|
1789 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
1790 {
|
|
|
1791 u_char *p;
|
|
86
|
1792 ngx_str_t line;
|
|
56
|
1793 uintptr_t escape;
|
|
28
|
1794 ngx_http_upstream_t *u;
|
|
|
1795 ngx_peer_connection_t *peer;
|
|
|
1796
|
|
|
1797 u = r->upstream;
|
|
|
1798 peer = &u->peer;
|
|
|
1799
|
|
|
1800 p = ngx_snprintf(buf, len,
|
|
58
|
1801 ", server: %V, URL: \"%V\","
|
|
52
|
1802 " upstream: %V%V%s%V",
|
|
|
1803 &r->server_name,
|
|
28
|
1804 &r->unparsed_uri,
|
|
58
|
1805 &u->conf->schema,
|
|
28
|
1806 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1807 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
58
|
1808 &u->conf->uri);
|
|
28
|
1809 len -= p - buf;
|
|
|
1810 buf = p;
|
|
|
1811
|
|
|
1812 if (r->quoted_uri) {
|
|
58
|
1813 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->conf->location->len,
|
|
|
1814 r->uri.len - u->conf->location->len,
|
|
28
|
1815 NGX_ESCAPE_URI);
|
|
|
1816 } else {
|
|
|
1817 escape = 0;
|
|
|
1818 }
|
|
|
1819
|
|
|
1820 if (escape) {
|
|
58
|
1821 if (len >= r->uri.len - u->conf->location->len + escape) {
|
|
28
|
1822
|
|
58
|
1823 ngx_escape_uri(buf, r->uri.data + u->conf->location->len,
|
|
|
1824 r->uri.len - u->conf->location->len, NGX_ESCAPE_URI);
|
|
28
|
1825
|
|
58
|
1826 buf += r->uri.len - u->conf->location->len + escape;
|
|
|
1827 len -= r->uri.len - u->conf->location->len + escape;
|
|
28
|
1828
|
|
86
|
1829 } else {
|
|
|
1830 p = ngx_palloc(r->pool,
|
|
|
1831 r->uri.len - u->conf->location->len + escape);
|
|
|
1832 if (p == NULL) {
|
|
|
1833 return buf;
|
|
28
|
1834 }
|
|
|
1835
|
|
86
|
1836 ngx_escape_uri(p, r->uri.data + u->conf->location->len,
|
|
|
1837 r->uri.len - u->conf->location->len, NGX_ESCAPE_URI);
|
|
|
1838
|
|
|
1839 line.len = len;
|
|
|
1840 line.data = p;
|
|
|
1841
|
|
|
1842 return ngx_snprintf(buf, len, "%V", &line);
|
|
28
|
1843 }
|
|
|
1844
|
|
86
|
1845 } else {
|
|
|
1846 line.len = r->uri.len - u->conf->location->len;
|
|
|
1847 if (line.len > len) {
|
|
|
1848 line.len = len;
|
|
28
|
1849 }
|
|
|
1850
|
|
86
|
1851 line.data = r->uri.data + u->conf->location->len;
|
|
|
1852 p = ngx_snprintf(buf, len, "%V", &line);
|
|
28
|
1853
|
|
86
|
1854 len -= p - buf;
|
|
|
1855 buf = p;
|
|
28
|
1856 }
|
|
|
1857
|
|
54
|
1858 if (r->args.len) {
|
|
|
1859 p = ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1860 len -= p - buf;
|
|
|
1861 buf = p;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1865 }
|
|
|
1866
|
|
|
1867
|
|
36
|
1868 static ngx_int_t
|
|
|
1869 ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
28
|
1870 {
|
|
|
1871 ngx_http_log_op_name_t *op;
|
|
|
1872
|
|
|
1873 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1874 op->run = NULL;
|
|
|
1875
|
|
|
1876 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1877 if (op->name.len == 0) {
|
|
|
1878 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1879 }
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
1883
|
|
|
1884 return NGX_OK;
|
|
|
1885 }
|
|
58
|
1886
|
|
|
1887
|
|
|
1888 static void *
|
|
|
1889 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
1890 {
|
|
|
1891 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1892
|
|
|
1893 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
1894 if (umcf == NULL) {
|
|
|
1895 return NULL;
|
|
|
1896 }
|
|
|
1897
|
|
|
1898 return umcf;
|
|
|
1899 }
|
|
|
1900
|
|
|
1901
|
|
|
1902 static char *
|
|
|
1903 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
1904 {
|
|
|
1905 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
1906
|
|
|
1907 umcf->headers_in_hash.max_size = 100;
|
|
|
1908 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
1909 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
1910 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
1911
|
|
|
1912 if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
|
|
|
1913 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
1914 {
|
|
|
1915 return NGX_CONF_ERROR;
|
|
|
1916 }
|
|
|
1917
|
|
|
1918 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
1919 "http upstream headers_in hash size: %ui, "
|
|
|
1920 "max buckets per entry: %ui",
|
|
|
1921 umcf->headers_in_hash.hash_size,
|
|
|
1922 umcf->headers_in_hash.min_buckets);
|
|
|
1923
|
|
|
1924 return NGX_CONF_OK;
|
|
|
1925 }
|
