|
28
|
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
|
|
58
|
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);
|
|
28
|
16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
|
|
36
|
17 ngx_http_upstream_t *u);
|
|
58
|
18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
|
|
36
|
19 ngx_http_upstream_t *u);
|
|
28
|
20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
|
|
36
|
21 ngx_http_upstream_t *u);
|
|
28
|
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);
|
|
|
24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
|
|
36
|
25 ngx_http_upstream_t *u);
|
|
130
|
26 static void
|
|
|
27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
|
|
|
28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
|
|
|
29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
|
|
|
30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
|
|
|
31 ssize_t bytes);
|
|
58
|
32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
|
|
28
|
33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
|
|
|
34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
|
|
|
35 static void ngx_http_upstream_next(ngx_http_request_t *r,
|
|
36
|
36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
|
|
118
|
37 static void ngx_http_upstream_cleanup(void *data);
|
|
28
|
38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
36
|
39 ngx_http_upstream_t *u, ngx_int_t rc);
|
|
28
|
40
|
|
58
|
41 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
|
|
|
42 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
43 static ngx_int_t
|
|
|
44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
45 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
|
|
|
47 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
76
|
48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
|
|
|
49 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
50 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
|
|
58
|
51 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
206
|
52 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
|
|
|
53 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
54 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
|
|
58
|
55 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
56 static ngx_int_t
|
|
|
57 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
58 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
59 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
|
|
|
60 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
61 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
|
|
|
62 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
63 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
|
|
|
64 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
65 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
|
|
|
66 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
67 #if (NGX_HTTP_GZIP)
|
|
|
68 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
69 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
70 #endif
|
|
|
71
|
|
28
|
72 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
|
|
36
|
73 uintptr_t data);
|
|
|
74 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
|
|
|
75 u_char *buf, ngx_http_log_op_t *op);
|
|
122
|
76 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
77 uintptr_t data);
|
|
112
|
78 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
|
|
|
79 u_char *buf, ngx_http_log_op_t *op);
|
|
28
|
80
|
|
122
|
81 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
|
|
|
82 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
83 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
84 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
85 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
86
|
|
200
|
87 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
|
|
|
88 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
89 void *conf);
|
|
|
90
|
|
58
|
91 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
|
|
200
|
92 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
|
|
58
|
93
|
|
126
|
94 #if (NGX_HTTP_SSL)
|
|
140
|
95 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
|
|
|
96 ngx_http_upstream_t *u, ngx_connection_t *c);
|
|
126
|
97 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
|
|
|
98 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
|
|
|
99 ngx_peer_t *peer);
|
|
|
100 #endif
|
|
|
101
|
|
58
|
102
|
|
|
103 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
|
|
|
104
|
|
|
105 { ngx_string("Status"),
|
|
|
106 ngx_http_upstream_process_header_line,
|
|
|
107 offsetof(ngx_http_upstream_headers_in_t, status),
|
|
198
|
108 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
109
|
|
|
110 { ngx_string("Content-Type"),
|
|
|
111 ngx_http_upstream_process_header_line,
|
|
|
112 offsetof(ngx_http_upstream_headers_in_t, content_type),
|
|
222
|
113 ngx_http_upstream_copy_content_type, 0, 1 },
|
|
58
|
114
|
|
|
115 { ngx_string("Content-Length"),
|
|
|
116 ngx_http_upstream_process_header_line,
|
|
|
117 offsetof(ngx_http_upstream_headers_in_t, content_length),
|
|
64
|
118 ngx_http_upstream_copy_content_length, 0, 0 },
|
|
58
|
119
|
|
|
120 { ngx_string("Date"),
|
|
|
121 ngx_http_upstream_process_header_line,
|
|
|
122 offsetof(ngx_http_upstream_headers_in_t, date),
|
|
198
|
123 ngx_http_upstream_copy_header_line,
|
|
|
124 offsetof(ngx_http_headers_out_t, date), 0 },
|
|
58
|
125
|
|
|
126 { ngx_string("Server"),
|
|
|
127 ngx_http_upstream_process_header_line,
|
|
|
128 offsetof(ngx_http_upstream_headers_in_t, server),
|
|
198
|
129 ngx_http_upstream_copy_header_line,
|
|
|
130 offsetof(ngx_http_headers_out_t, server), 0 },
|
|
58
|
131
|
|
78
|
132 { ngx_string("WWW-Authenticate"),
|
|
|
133 ngx_http_upstream_process_header_line,
|
|
|
134 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
|
|
|
135 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
|
136
|
|
58
|
137 { ngx_string("Location"),
|
|
|
138 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
139 ngx_http_upstream_rewrite_location, 0, 0 },
|
|
58
|
140
|
|
|
141 { ngx_string("Refresh"),
|
|
|
142 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
143 ngx_http_upstream_rewrite_refresh, 0, 0 },
|
|
|
144
|
|
|
145 { ngx_string("Set-Cookie"),
|
|
|
146 ngx_http_upstream_ignore_header_line, 0,
|
|
80
|
147 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
|
148
|
|
|
149 { ngx_string("Content-Disposition"),
|
|
|
150 ngx_http_upstream_ignore_header_line, 0,
|
|
|
151 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
58
|
152
|
|
|
153 { ngx_string("Cache-Control"),
|
|
|
154 ngx_http_upstream_process_multi_header_lines,
|
|
|
155 offsetof(ngx_http_upstream_headers_in_t, cache_control),
|
|
|
156 ngx_http_upstream_copy_multi_header_lines,
|
|
64
|
157 offsetof(ngx_http_headers_out_t, cache_control), 1 },
|
|
58
|
158
|
|
122
|
159 { ngx_string("Expires"),
|
|
|
160 ngx_http_upstream_process_header_line,
|
|
|
161 offsetof(ngx_http_upstream_headers_in_t, expires),
|
|
|
162 ngx_http_upstream_copy_header_line,
|
|
|
163 offsetof(ngx_http_headers_out_t, expires), 1 },
|
|
|
164
|
|
126
|
165 { ngx_string("Accept-Ranges"),
|
|
|
166 ngx_http_upstream_process_header_line,
|
|
|
167 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
|
|
|
168 ngx_http_upstream_copy_header_line,
|
|
|
169 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
|
|
|
170
|
|
58
|
171 { ngx_string("Connection"),
|
|
|
172 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
173 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
174
|
|
190
|
175 { ngx_string("Keep-Alive"),
|
|
|
176 ngx_http_upstream_ignore_header_line, 0,
|
|
|
177 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
178
|
|
58
|
179 { ngx_string("X-Powered-By"),
|
|
|
180 ngx_http_upstream_ignore_header_line, 0,
|
|
198
|
181 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
182
|
|
|
183 { ngx_string("X-Accel-Expires"),
|
|
|
184 ngx_http_upstream_process_header_line,
|
|
|
185 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
|
|
198
|
186 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
64
|
187
|
|
|
188 { ngx_string("X-Accel-Redirect"),
|
|
|
189 ngx_http_upstream_process_header_line,
|
|
|
190 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
|
|
|
191 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
192
|
|
76
|
193 { ngx_string("X-Accel-Limit-Rate"),
|
|
|
194 ngx_http_upstream_process_limit_rate, 0,
|
|
|
195 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
196
|
|
198
|
197 { ngx_string("X-Accel-Buffering"),
|
|
|
198 ngx_http_upstream_process_buffering, 0,
|
|
|
199 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
200
|
|
206
|
201 { ngx_string("X-Accel-Charset"),
|
|
|
202 ngx_http_upstream_process_charset, 0,
|
|
|
203 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
204
|
|
58
|
205 #if (NGX_HTTP_GZIP)
|
|
|
206 { ngx_string("Content-Encoding"),
|
|
|
207 ngx_http_upstream_process_header_line,
|
|
|
208 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
|
|
64
|
209 ngx_http_upstream_copy_content_encoding, 0, 0 },
|
|
58
|
210 #endif
|
|
|
211
|
|
64
|
212 { ngx_null_string, NULL, 0, NULL, 0, 0 }
|
|
58
|
213 };
|
|
28
|
214
|
|
|
215
|
|
200
|
216 static ngx_command_t ngx_http_upstream_commands[] = {
|
|
|
217
|
|
|
218 { ngx_string("upstream"),
|
|
|
219 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
|
|
|
220 ngx_http_upstream,
|
|
|
221 0,
|
|
|
222 0,
|
|
|
223 NULL },
|
|
|
224
|
|
|
225 { ngx_string("server"),
|
|
212
|
226 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12,
|
|
200
|
227 ngx_http_upstream_server,
|
|
|
228 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
229 0,
|
|
|
230 NULL },
|
|
|
231
|
|
|
232 ngx_null_command
|
|
|
233 };
|
|
|
234
|
|
|
235
|
|
|
236 static ngx_http_module_t ngx_http_upstream_module_ctx = {
|
|
122
|
237 ngx_http_upstream_add_variables, /* preconfiguration */
|
|
58
|
238 NULL, /* postconfiguration */
|
|
|
239
|
|
|
240 ngx_http_upstream_create_main_conf, /* create main configuration */
|
|
200
|
241 ngx_http_upstream_init_main_conf, /* init main configuration */
|
|
28
|
242
|
|
|
243 NULL, /* create server configuration */
|
|
|
244 NULL, /* merge server configuration */
|
|
|
245
|
|
|
246 NULL, /* create location configuration */
|
|
|
247 NULL /* merge location configuration */
|
|
|
248 };
|
|
126
|
249
|
|
28
|
250
|
|
|
251 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
252 NGX_MODULE_V1,
|
|
28
|
253 &ngx_http_upstream_module_ctx, /* module context */
|
|
200
|
254 ngx_http_upstream_commands, /* module directives */
|
|
28
|
255 NGX_HTTP_MODULE, /* module type */
|
|
90
|
256 NULL, /* init master */
|
|
28
|
257 NULL, /* init module */
|
|
90
|
258 NULL, /* init process */
|
|
|
259 NULL, /* init thread */
|
|
|
260 NULL, /* exit thread */
|
|
|
261 NULL, /* exit process */
|
|
|
262 NULL, /* exit master */
|
|
|
263 NGX_MODULE_V1_PADDING
|
|
28
|
264 };
|
|
|
265
|
|
|
266
|
|
132
|
267 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
|
|
28
|
268 { ngx_string("upstream_status"), 0, NULL,
|
|
122
|
269 ngx_http_upstream_log_status_getlen,
|
|
|
270 ngx_http_upstream_log_status },
|
|
|
271 { ngx_string("upstream_response_time"), 0, NULL,
|
|
|
272 ngx_http_upstream_log_response_time_getlen,
|
|
|
273 ngx_http_upstream_log_response_time },
|
|
28
|
274 { ngx_null_string, 0, NULL, NULL, NULL }
|
|
|
275 };
|
|
|
276
|
|
|
277
|
|
122
|
278 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
279
|
|
186
|
280 { ngx_string("upstream_status"), NULL,
|
|
132
|
281 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
|
|
122
|
282
|
|
186
|
283 { ngx_string("upstream_response_time"), NULL,
|
|
132
|
284 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
|
|
122
|
285
|
|
186
|
286 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
287 };
|
|
|
288
|
|
|
289
|
|
36
|
290 void
|
|
|
291 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
292 {
|
|
58
|
293 ngx_connection_t *c;
|
|
118
|
294 ngx_http_cleanup_t *cln;
|
|
58
|
295 ngx_http_upstream_t *u;
|
|
|
296 ngx_http_core_loc_conf_t *clcf;
|
|
28
|
297
|
|
|
298 c = r->connection;
|
|
|
299
|
|
|
300 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
301 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
302
|
|
|
303 if (c->read->timer_set) {
|
|
|
304 ngx_del_timer(c->read);
|
|
|
305 }
|
|
|
306
|
|
178
|
307 u = r->upstream;
|
|
|
308
|
|
|
309 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
310 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
311 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
312 }
|
|
126
|
313
|
|
28
|
314 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
315
|
|
|
316 if (!c->write->active) {
|
|
80
|
317 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
318 == NGX_ERROR)
|
|
28
|
319 {
|
|
|
320 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
321 return;
|
|
|
322 }
|
|
|
323 }
|
|
|
324 }
|
|
|
325
|
|
86
|
326 if (r->request_body) {
|
|
|
327 u->request_bufs = r->request_body->bufs;
|
|
|
328 }
|
|
58
|
329
|
|
86
|
330 if (u->create_request(r) != NGX_OK) {
|
|
28
|
331 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
332 return;
|
|
|
333 }
|
|
|
334
|
|
|
335 u->peer.log = r->connection->log;
|
|
58
|
336
|
|
|
337 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
338
|
|
|
339 u->output.sendfile = r->connection->sendfile;
|
|
|
340 u->output.pool = r->pool;
|
|
|
341 u->output.bufs.num = 1;
|
|
58
|
342 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
343 u->output.output_filter = ngx_chain_writer;
|
|
|
344 u->output.filter_ctx = &u->writer;
|
|
|
345
|
|
|
346 u->writer.pool = r->pool;
|
|
|
347
|
|
|
348 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
349 sizeof(ngx_http_upstream_state_t))
|
|
|
350 != NGX_OK)
|
|
28
|
351 {
|
|
|
352 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
353 return;
|
|
|
354 }
|
|
|
355
|
|
142
|
356 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
357 if (cln == NULL) {
|
|
|
358 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361
|
|
|
362 cln->handler = ngx_http_upstream_cleanup;
|
|
|
363 cln->data = r;
|
|
|
364 u->cleanup = &cln->handler;
|
|
|
365
|
|
28
|
366 ngx_http_upstream_connect(r, u);
|
|
|
367 }
|
|
|
368
|
|
|
369
|
|
36
|
370 static void
|
|
58
|
371 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
372 {
|
|
|
373 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
374 }
|
|
|
375
|
|
|
376
|
|
|
377 static void
|
|
|
378 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
379 {
|
|
|
380 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
381 }
|
|
|
382
|
|
|
383
|
|
|
384 static void
|
|
|
385 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
386 ngx_event_t *ev)
|
|
28
|
387 {
|
|
|
388 int n;
|
|
|
389 char buf[1];
|
|
126
|
390 ngx_err_t err;
|
|
28
|
391 ngx_connection_t *c;
|
|
|
392 ngx_http_upstream_t *u;
|
|
|
393
|
|
76
|
394 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
395 "http upstream check client, write event:%d, \"%V\"",
|
|
|
396 ev->write, &r->uri);
|
|
28
|
397
|
|
58
|
398 c = r->connection;
|
|
32
|
399 u = r->upstream;
|
|
|
400
|
|
132
|
401 if (c->error) {
|
|
76
|
402 ngx_http_upstream_finalize_request(r, u,
|
|
|
403 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
404 return;
|
|
|
405 }
|
|
|
406
|
|
32
|
407 if (u->peer.connection == NULL) {
|
|
|
408 return;
|
|
|
409 }
|
|
|
410
|
|
28
|
411 #if (NGX_HAVE_KQUEUE)
|
|
|
412
|
|
|
413 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
414
|
|
|
415 if (!ev->pending_eof) {
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
|
419 ev->eof = 1;
|
|
132
|
420 c->error = 1;
|
|
28
|
421
|
|
|
422 if (ev->kq_errno) {
|
|
|
423 ev->error = 1;
|
|
|
424 }
|
|
|
425
|
|
|
426 if (!u->cachable && u->peer.connection) {
|
|
|
427 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
428 "kevent() reported that client closed prematurely "
|
|
|
429 "connection, so upstream connection is closed too");
|
|
28
|
430 ngx_http_upstream_finalize_request(r, u,
|
|
|
431 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
432 return;
|
|
|
433 }
|
|
|
434
|
|
|
435 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
436 "kevent() reported that client closed "
|
|
|
437 "prematurely connection");
|
|
|
438
|
|
|
439 if (u->peer.connection == NULL) {
|
|
|
440 ngx_http_upstream_finalize_request(r, u,
|
|
|
441 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
442 return;
|
|
|
443 }
|
|
|
444
|
|
|
445 return;
|
|
|
446 }
|
|
|
447
|
|
|
448 #endif
|
|
|
449
|
|
|
450 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
451
|
|
|
452 err = ngx_socket_errno;
|
|
|
453
|
|
|
454 /*
|
|
|
455 * we do not need to disable the write event because
|
|
|
456 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
457 */
|
|
|
458
|
|
|
459 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
464 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
465 ngx_http_upstream_finalize_request(r, u,
|
|
|
466 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
467 return;
|
|
|
468 }
|
|
|
469 }
|
|
|
470
|
|
|
471 if (n > 0) {
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 if (n == -1) {
|
|
|
476 if (err == NGX_EAGAIN) {
|
|
|
477 return;
|
|
|
478 }
|
|
|
479
|
|
|
480 ev->error = 1;
|
|
|
481
|
|
32
|
482 } else { /* n == 0 */
|
|
28
|
483 err = 0;
|
|
|
484 }
|
|
|
485
|
|
78
|
486 ev->eof = 1;
|
|
132
|
487 c->error = 1;
|
|
78
|
488
|
|
28
|
489 if (!u->cachable && u->peer.connection) {
|
|
|
490 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
491 "client closed prematurely connection, "
|
|
|
492 "so upstream connection is closed too");
|
|
|
493 ngx_http_upstream_finalize_request(r, u,
|
|
|
494 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
|
498 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
499 "client closed prematurely connection");
|
|
|
500
|
|
|
501 if (u->peer.connection == NULL) {
|
|
|
502 ngx_http_upstream_finalize_request(r, u,
|
|
|
503 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
504 return;
|
|
|
505 }
|
|
|
506 }
|
|
|
507
|
|
|
508
|
|
36
|
509 static void
|
|
|
510 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
511 {
|
|
140
|
512 ngx_int_t rc;
|
|
214
|
513 ngx_time_t *tp;
|
|
140
|
514 ngx_connection_t *c;
|
|
28
|
515
|
|
32
|
516 r->connection->log->action = "connecting to upstream";
|
|
28
|
517
|
|
|
518 r->connection->single_connection = 0;
|
|
|
519
|
|
214
|
520 if (u->state && u->state->response_time) {
|
|
|
521 tp = ngx_timeofday();
|
|
|
522 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
523 - u->state->response_time;
|
|
|
524 }
|
|
|
525
|
|
|
526 u->state = ngx_array_push(&u->states);
|
|
|
527 if (u->state == NULL) {
|
|
|
528 ngx_http_upstream_finalize_request(r, u,
|
|
|
529 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
530 return;
|
|
|
531 }
|
|
|
532
|
|
|
533 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
534
|
|
|
535 tp = ngx_timeofday();
|
|
|
536 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
537
|
|
28
|
538 rc = ngx_event_connect_peer(&u->peer);
|
|
|
539
|
|
|
540 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
541 "http upstream connect: %i", rc);
|
|
|
542
|
|
|
543 if (rc == NGX_ERROR) {
|
|
|
544 ngx_http_upstream_finalize_request(r, u,
|
|
|
545 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
546 return;
|
|
|
547 }
|
|
|
548
|
|
140
|
549 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
550
|
|
92
|
551 if (rc == NGX_BUSY) {
|
|
|
552 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
553 }
|
|
|
554
|
|
|
555 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
556 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
557 return;
|
|
|
558 }
|
|
|
559
|
|
126
|
560 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
561
|
|
28
|
562 c = u->peer.connection;
|
|
|
563
|
|
|
564 c->data = r;
|
|
140
|
565
|
|
58
|
566 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
567 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
568
|
|
|
569 c->sendfile = r->connection->sendfile;
|
|
|
570
|
|
|
571 c->pool = r->pool;
|
|
|
572 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
573
|
|
|
574 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
575
|
|
|
576 u->writer.out = NULL;
|
|
|
577 u->writer.last = &u->writer.out;
|
|
|
578 u->writer.connection = c;
|
|
|
579 u->writer.limit = 0;
|
|
|
580
|
|
|
581 if (u->request_sent) {
|
|
58
|
582 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
583 ngx_http_upstream_finalize_request(r, u,
|
|
|
584 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
585 return;
|
|
|
586 }
|
|
28
|
587 }
|
|
|
588
|
|
146
|
589 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
590
|
|
|
591 /*
|
|
|
592 * the r->request_body->buf can be reused for one request only,
|
|
|
593 * the subrequests should allocate their own temporay bufs
|
|
|
594 */
|
|
|
595
|
|
|
596 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
597 if (u->output.free == NULL) {
|
|
|
598 ngx_http_upstream_finalize_request(r, u,
|
|
|
599 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
600 return;
|
|
28
|
601 }
|
|
122
|
602
|
|
|
603 u->output.free->buf = r->request_body->buf;
|
|
|
604 u->output.free->next = NULL;
|
|
|
605 u->output.allocated = 1;
|
|
|
606
|
|
|
607 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
608 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
609 r->request_body->buf->tag = u->output.tag;
|
|
28
|
610 }
|
|
|
611
|
|
|
612 u->request_sent = 0;
|
|
|
613
|
|
|
614 if (rc == NGX_AGAIN) {
|
|
|
615 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
126
|
619 #if (NGX_HTTP_SSL)
|
|
|
620
|
|
140
|
621 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
622 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
623 return;
|
|
|
624 }
|
|
|
625
|
|
|
626 #endif
|
|
|
627
|
|
28
|
628 ngx_http_upstream_send_request(r, u);
|
|
|
629 }
|
|
|
630
|
|
|
631
|
|
126
|
632 #if (NGX_HTTP_SSL)
|
|
|
633
|
|
|
634 static void
|
|
140
|
635 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
636 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
637 {
|
|
|
638 ngx_int_t rc;
|
|
|
639 ngx_peer_t *peer;
|
|
|
640
|
|
|
641 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
642 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
643 == NGX_ERROR)
|
|
|
644 {
|
|
|
645 ngx_http_upstream_finalize_request(r, u,
|
|
|
646 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
647 return;
|
|
|
648 }
|
|
|
649
|
|
|
650 c->sendfile = 0;
|
|
168
|
651 u->output.sendfile = 0;
|
|
140
|
652
|
|
|
653 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
654
|
|
|
655 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
656 ngx_http_upstream_finalize_request(r, u,
|
|
|
657 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
658 return;
|
|
|
659 }
|
|
|
660
|
|
190
|
661 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
662
|
|
140
|
663 rc = ngx_ssl_handshake(c);
|
|
|
664
|
|
|
665 if (rc == NGX_AGAIN) {
|
|
|
666 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
667 return;
|
|
|
668 }
|
|
|
669
|
|
|
670 ngx_http_upstream_ssl_handshake(c);
|
|
|
671 }
|
|
|
672
|
|
|
673
|
|
|
674 static void
|
|
126
|
675 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
676 {
|
|
|
677 ngx_http_request_t *r;
|
|
|
678 ngx_http_upstream_t *u;
|
|
|
679
|
|
|
680 r = c->data;
|
|
|
681 u = r->upstream;
|
|
|
682
|
|
|
683 if (c->ssl->handshaked) {
|
|
|
684
|
|
|
685 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
686 c->read->handler = ngx_http_upstream_process_header;
|
|
|
687
|
|
|
688 ngx_http_upstream_send_request(r, u);
|
|
|
689
|
|
|
690 return;
|
|
|
691 }
|
|
|
692
|
|
|
693 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
694
|
|
|
695 }
|
|
|
696
|
|
|
697 #endif
|
|
|
698
|
|
|
699
|
|
58
|
700 static ngx_int_t
|
|
36
|
701 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
702 {
|
|
|
703 ngx_chain_t *cl;
|
|
|
704
|
|
58
|
705 if (u->reinit_request(r) != NGX_OK) {
|
|
|
706 return NGX_ERROR;
|
|
|
707 }
|
|
|
708
|
|
|
709 ngx_memzero(&r->upstream->headers_in,
|
|
|
710 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
711
|
|
|
712 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
713 sizeof(ngx_table_elt_t))
|
|
|
714 != NGX_OK)
|
|
58
|
715 {
|
|
|
716 return NGX_ERROR;
|
|
28
|
717 }
|
|
|
718
|
|
|
719 /* reinit the request chain */
|
|
126
|
720
|
|
58
|
721 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
722 cl->buf->pos = cl->buf->start;
|
|
|
723 cl->buf->file_pos = 0;
|
|
|
724 }
|
|
|
725
|
|
58
|
726 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
727
|
|
122
|
728 if (r->request_body && r->request_body->temp_file
|
|
146
|
729 && r != r->main && u->output.buf)
|
|
122
|
730 {
|
|
|
731 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
732 if (u->output.free == NULL) {
|
|
|
733 return NGX_ERROR;
|
|
58
|
734 }
|
|
122
|
735
|
|
|
736 u->output.free->buf = u->output.buf;
|
|
|
737 u->output.free->next = NULL;
|
|
|
738
|
|
|
739 u->output.buf->pos = u->output.buf->start;
|
|
|
740 u->output.buf->last = u->output.buf->start;
|
|
58
|
741 }
|
|
28
|
742
|
|
|
743 u->output.buf = NULL;
|
|
|
744 u->output.in = NULL;
|
|
|
745 u->output.busy = NULL;
|
|
126
|
746
|
|
130
|
747 /* reinit u->buffer */
|
|
126
|
748
|
|
28
|
749 #if 0
|
|
|
750 if (u->cache) {
|
|
130
|
751 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
752 u->buffer.last = u->buffer.pos;
|
|
28
|
753
|
|
|
754 } else {
|
|
130
|
755 u->buffer.pos = u->buffer.start;
|
|
|
756 u->buffer.last = u->buffer.start;
|
|
28
|
757 }
|
|
|
758 #else
|
|
58
|
759
|
|
130
|
760 u->buffer.pos = u->buffer.start;
|
|
|
761 u->buffer.last = u->buffer.start;
|
|
58
|
762
|
|
28
|
763 #endif
|
|
|
764
|
|
58
|
765 return NGX_OK;
|
|
28
|
766 }
|
|
|
767
|
|
|
768
|
|
36
|
769 static void
|
|
|
770 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
771 {
|
|
220
|
772 int rc, err;
|
|
|
773 socklen_t len;
|
|
32
|
774 ngx_connection_t *c;
|
|
126
|
775
|
|
28
|
776 c = u->peer.connection;
|
|
|
777
|
|
|
778 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
779 "http upstream send request");
|
|
|
780
|
|
220
|
781 if (!u->request_sent) {
|
|
|
782
|
|
28
|
783 #if (NGX_HAVE_KQUEUE)
|
|
|
784
|
|
220
|
785 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
786 if (c->write->pending_eof) {
|
|
|
787 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
86
|
788 "kevent() reported that connect() failed");
|
|
220
|
789 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
790 return;
|
|
|
791 }
|
|
|
792
|
|
|
793 } else
|
|
|
794 #endif
|
|
|
795 {
|
|
|
796 err = 0;
|
|
|
797 len = sizeof(int);
|
|
|
798
|
|
|
799 /*
|
|
|
800 * BSDs and Linux return 0 and set a pending error in err
|
|
|
801 * Solaris returns -1 and sets errno
|
|
|
802 */
|
|
|
803
|
|
|
804 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
805 == -1)
|
|
|
806 {
|
|
|
807 err = ngx_errno;
|
|
|
808 }
|
|
|
809
|
|
|
810 if (err) {
|
|
|
811 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
812 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
813 return;
|
|
|
814 }
|
|
|
815 }
|
|
28
|
816 }
|
|
|
817
|
|
32
|
818 c->log->action = "sending request to upstream";
|
|
28
|
819
|
|
58
|
820 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
821
|
|
|
822 u->request_sent = 1;
|
|
|
823
|
|
|
824 if (rc == NGX_ERROR) {
|
|
|
825 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
826 return;
|
|
|
827 }
|
|
|
828
|
|
|
829 if (c->write->timer_set) {
|
|
|
830 ngx_del_timer(c->write);
|
|
|
831 }
|
|
|
832
|
|
|
833 if (rc == NGX_AGAIN) {
|
|
|
834 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
835
|
|
|
836 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
837 {
|
|
|
838 ngx_http_upstream_finalize_request(r, u,
|
|
|
839 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
840 return;
|
|
|
841 }
|
|
|
842
|
|
|
843 return;
|
|
|
844 }
|
|
|
845
|
|
|
846 /* rc == NGX_OK */
|
|
|
847
|
|
|
848 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
849 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
850 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
851 ngx_tcp_push_n " failed");
|
|
|
852 ngx_http_upstream_finalize_request(r, u,
|
|
|
853 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
854 return;
|
|
28
|
855 }
|
|
|
856
|
|
|
857 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
858 }
|
|
126
|
859
|
|
28
|
860 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
861
|
|
|
862 #if 1
|
|
|
863 if (c->read->ready) {
|
|
126
|
864
|
|
28
|
865 /* post aio operation */
|
|
|
866
|
|
|
867 /*
|
|
|
868 * TODO comment
|
|
|
869 * although we can post aio operation just in the end
|
|
|
870 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
871 * it's better to do here because we postpone header buffer allocation
|
|
|
872 */
|
|
|
873
|
|
|
874 ngx_http_upstream_process_header(c->read);
|
|
|
875 return;
|
|
|
876 }
|
|
|
877 #endif
|
|
|
878
|
|
58
|
879 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
880
|
|
58
|
881 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
882 ngx_http_upstream_finalize_request(r, u,
|
|
|
883 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
884 return;
|
|
|
885 }
|
|
|
886 }
|
|
|
887
|
|
|
888
|
|
36
|
889 static void
|
|
|
890 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
891 {
|
|
|
892 ngx_connection_t *c;
|
|
|
893 ngx_http_request_t *r;
|
|
|
894 ngx_http_upstream_t *u;
|
|
|
895
|
|
|
896 c = wev->data;
|
|
|
897 r = c->data;
|
|
|
898 u = r->upstream;
|
|
|
899
|
|
|
900 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
901 "http upstream send request handler");
|
|
|
902
|
|
|
903 if (wev->timedout) {
|
|
|
904 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
905 return;
|
|
|
906 }
|
|
|
907
|
|
140
|
908 #if (NGX_HTTP_SSL)
|
|
|
909
|
|
|
910 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
911 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
912 return;
|
|
|
913 }
|
|
|
914
|
|
|
915 #endif
|
|
|
916
|
|
200
|
917 if (u->header_sent) {
|
|
|
918 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
919
|
|
|
920 (void) ngx_handle_write_event(wev, 0);
|
|
|
921
|
|
|
922 return;
|
|
|
923 }
|
|
|
924
|
|
28
|
925 ngx_http_upstream_send_request(r, u);
|
|
|
926 }
|
|
|
927
|
|
|
928
|
|
36
|
929 static void
|
|
|
930 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
931 {
|
|
64
|
932 ssize_t n;
|
|
|
933 ngx_int_t rc;
|
|
122
|
934 ngx_str_t *uri, args;
|
|
198
|
935 ngx_uint_t i, flags;
|
|
64
|
936 ngx_list_part_t *part;
|
|
|
937 ngx_table_elt_t *h;
|
|
|
938 ngx_connection_t *c;
|
|
|
939 ngx_http_request_t *r;
|
|
|
940 ngx_http_upstream_t *u;
|
|
|
941 ngx_http_err_page_t *err_page;
|
|
|
942 ngx_http_core_loc_conf_t *clcf;
|
|
|
943 ngx_http_upstream_header_t *hh;
|
|
|
944 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
945
|
|
|
946 c = rev->data;
|
|
|
947 r = c->data;
|
|
|
948 u = r->upstream;
|
|
|
949
|
|
|
950 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
951 "http upstream process header");
|
|
28
|
952
|
|
32
|
953 c->log->action = "reading response header from upstream";
|
|
28
|
954
|
|
|
955 if (rev->timedout) {
|
|
|
956 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
957 return;
|
|
|
958 }
|
|
126
|
959
|
|
130
|
960 if (u->buffer.start == NULL) {
|
|
|
961 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
962 if (u->buffer.start == NULL) {
|
|
28
|
963 ngx_http_upstream_finalize_request(r, u,
|
|
|
964 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
965 return;
|
|
|
966 }
|
|
|
967
|
|
130
|
968 u->buffer.pos = u->buffer.start;
|
|
|
969 u->buffer.last = u->buffer.start;
|
|
|
970 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
971 u->buffer.temporary = 1;
|
|
|
972
|
|
|
973 u->buffer.tag = u->output.tag;
|
|
28
|
974
|
|
58
|
975 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
976 sizeof(ngx_table_elt_t))
|
|
|
977 != NGX_OK)
|
|
58
|
978 {
|
|
|
979 ngx_http_upstream_finalize_request(r, u,
|
|
|
980 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
981 return;
|
|
|
982 }
|
|
|
983
|
|
28
|
984 #if 0
|
|
|
985 if (u->cache) {
|
|
130
|
986 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
987 u->buffer.last = u->buffer.pos;
|
|
28
|
988 }
|
|
|
989 #endif
|
|
|
990 }
|
|
|
991
|
|
130
|
992 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
993 u->buffer.end - u->buffer.last);
|
|
28
|
994
|
|
|
995 if (n == NGX_AGAIN) {
|
|
|
996 #if 0
|
|
|
997 ngx_add_timer(rev, u->read_timeout);
|
|
|
998 #endif
|
|
|
999
|
|
|
1000 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1001 ngx_http_upstream_finalize_request(r, u,
|
|
|
1002 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1003 return;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 if (n == 0) {
|
|
|
1010 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1011 "upstream prematurely closed connection");
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 if (n == NGX_ERROR || n == 0) {
|
|
|
1015 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1016 return;
|
|
|
1017 }
|
|
|
1018
|
|
130
|
1019 u->buffer.last += n;
|
|
28
|
1020
|
|
|
1021 #if 0
|
|
|
1022 u->valid_header_in = 0;
|
|
|
1023
|
|
|
1024 u->peer.cached = 0;
|
|
|
1025 #endif
|
|
|
1026
|
|
|
1027 rc = u->process_header(r);
|
|
|
1028
|
|
|
1029 if (rc == NGX_AGAIN) {
|
|
|
1030 #if 0
|
|
|
1031 ngx_add_timer(rev, u->read_timeout);
|
|
|
1032 #endif
|
|
|
1033
|
|
130
|
1034 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1035 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1036 "upstream sent too big header");
|
|
|
1037
|
|
|
1038 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1039 return;
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1043 ngx_http_upstream_finalize_request(r, u,
|
|
|
1044 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1045 return;
|
|
|
1046 }
|
|
|
1047
|
|
|
1048 return;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1052 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1053 return;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1057 ngx_http_upstream_finalize_request(r, u,
|
|
|
1058 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1059 return;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 /* rc == NGX_OK */
|
|
|
1063
|
|
78
|
1064 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1065
|
|
|
1066 if (u->peer.tries > 1
|
|
|
1067 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1068 {
|
|
|
1069 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1070 return;
|
|
|
1071 }
|
|
|
1072
|
|
|
1073 #if (NGX_HTTP_CACHE)
|
|
|
1074
|
|
|
1075 if (u->peer.tries == 0
|
|
|
1076 && u->stale
|
|
|
1077 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1078 {
|
|
|
1079 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1080 ngx_http_send_cached_response(r));
|
|
58
|
1081 return;
|
|
|
1082 }
|
|
|
1083
|
|
|
1084 #endif
|
|
|
1085 }
|
|
|
1086
|
|
146
|
1087 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1088
|
|
|
1089 if (u->peer.tries > 1
|
|
|
1090 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1091 {
|
|
|
1092 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1093 return;
|
|
|
1094 }
|
|
|
1095
|
|
224
|
1096 if (u->conf->intercept_404) {
|
|
|
1097 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1098 return;
|
|
|
1099 }
|
|
58
|
1100 }
|
|
|
1101
|
|
|
1102
|
|
78
|
1103 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1104 && u->conf->intercept_errors)
|
|
36
|
1105 {
|
|
|
1106 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1107
|
|
|
1108 if (clcf->error_pages) {
|
|
|
1109
|
|
|
1110 err_page = clcf->error_pages->elts;
|
|
|
1111 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1112 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1113
|
|
|
1114 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1115
|
|
|
1116 r->headers_out.www_authenticate =
|
|
|
1117 ngx_list_push(&r->headers_out.headers);
|
|
|
1118
|
|
|
1119 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1120 ngx_http_upstream_finalize_request(r, u,
|
|
|
1121 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1122 return;
|
|
|
1123 }
|
|
|
1124
|
|
126
|
1125 *r->headers_out.www_authenticate =
|
|
78
|
1126 *u->headers_in.www_authenticate;
|
|
|
1127 }
|
|
|
1128
|
|
36
|
1129 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1130 u->headers_in.status_n);
|
|
36
|
1131 return;
|
|
|
1132 }
|
|
|
1133 }
|
|
|
1134 }
|
|
|
1135 }
|
|
|
1136
|
|
230
|
1137 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1138
|
|
64
|
1139 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1140
|
|
64
|
1141 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1142
|
|
|
1143 part = &r->upstream->headers_in.headers.part;
|
|
|
1144 h = part->elts;
|
|
|
1145
|
|
|
1146 for (i = 0; /* void */; i++) {
|
|
|
1147
|
|
|
1148 if (i >= part->nelts) {
|
|
|
1149 if (part->next == NULL) {
|
|
|
1150 break;
|
|
|
1151 }
|
|
126
|
1152
|
|
64
|
1153 part = part->next;
|
|
|
1154 h = part->elts;
|
|
|
1155 i = 0;
|
|
|
1156 }
|
|
|
1157
|
|
198
|
1158 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1159 h[i].lowcase_key, h[i].key.len);
|
|
|
1160
|
|
|
1161 if (hh && hh->redirect) {
|
|
|
1162 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
244
|
1163 ngx_http_finalize_request(r,
|
|
|
1164 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1165 return;
|
|
|
1166 }
|
|
|
1167 }
|
|
|
1168 }
|
|
|
1169
|
|
122
|
1170 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1171 args.len = 0;
|
|
|
1172 args.data = NULL;
|
|
|
1173 flags = 0;
|
|
|
1174
|
|
|
1175 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1176 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1177 return;
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1181 r->zero_in_uri = 1;
|
|
|
1182 }
|
|
|
1183
|
|
202
|
1184 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1185 r->method = NGX_HTTP_GET;
|
|
|
1186 }
|
|
|
1187
|
|
122
|
1188 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1189 return;
|
|
|
1190 }
|
|
|
1191
|
|
58
|
1192 part = &r->upstream->headers_in.headers.part;
|
|
|
1193 h = part->elts;
|
|
|
1194
|
|
|
1195 for (i = 0; /* void */; i++) {
|
|
28
|
1196
|
|
58
|
1197 if (i >= part->nelts) {
|
|
|
1198 if (part->next == NULL) {
|
|
|
1199 break;
|
|
|
1200 }
|
|
126
|
1201
|
|
58
|
1202 part = part->next;
|
|
|
1203 h = part->elts;
|
|
|
1204 i = 0;
|
|
|
1205 }
|
|
|
1206
|
|
198
|
1207 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1208 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1209 {
|
|
198
|
1210 continue;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1214 h[i].lowcase_key, h[i].key.len);
|
|
|
1215
|
|
|
1216 if (hh) {
|
|
|
1217 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1218 ngx_http_upstream_finalize_request(r, u,
|
|
|
1219 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1220 return;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 continue;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1227 ngx_http_upstream_finalize_request(r, u,
|
|
|
1228 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1229 return;
|
|
|
1230 }
|
|
|
1231 }
|
|
|
1232
|
|
198
|
1233 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1234 r->headers_out.server->hash = 0;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1238 r->headers_out.date->hash = 0;
|
|
|
1239 }
|
|
|
1240
|
|
78
|
1241 r->headers_out.status = u->headers_in.status_n;
|
|
|
1242 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1243
|
|
130
|
1244 if (r->headers_out.content_length_n != -1) {
|
|
|
1245 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1246
|
|
|
1247 } else {
|
|
|
1248 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1249 }
|
|
|
1250
|
|
230
|
1251 ngx_http_upstream_send_response(r, u);
|
|
|
1252 }
|
|
|
1253
|
|
|
1254
|
|
|
1255 static void
|
|
|
1256 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1257 {
|
|
|
1258 int tcp_nodelay;
|
|
|
1259 ssize_t size;
|
|
|
1260 ngx_int_t rc;
|
|
|
1261 ngx_event_pipe_t *p;
|
|
|
1262 ngx_connection_t *c;
|
|
|
1263 ngx_pool_cleanup_t *cl;
|
|
|
1264 ngx_pool_cleanup_file_t *clf;
|
|
|
1265 ngx_http_core_loc_conf_t *clcf;
|
|
|
1266
|
|
58
|
1267 rc = ngx_http_send_header(r);
|
|
28
|
1268
|
|
178
|
1269 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1270 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1271 return;
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 u->header_sent = 1;
|
|
|
1275
|
|
122
|
1276 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1277 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1278 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1279 clf = cl->data;
|
|
|
1280
|
|
|
1281 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1282 cl->handler(clf);
|
|
|
1283 cl->handler = NULL;
|
|
208
|
1284 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1285 break;
|
|
|
1286 }
|
|
|
1287 }
|
|
|
1288 }
|
|
|
1289 }
|
|
|
1290
|
|
132
|
1291 c = r->connection;
|
|
|
1292
|
|
130
|
1293 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1294
|
|
198
|
1295 if (!u->buffering) {
|
|
130
|
1296
|
|
|
1297 if (u->input_filter == NULL) {
|
|
|
1298 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1299 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1300 u->input_filter_ctx = r;
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 u->peer.connection->read->handler =
|
|
|
1304 ngx_http_upstream_process_non_buffered_body;
|
|
|
1305 r->write_event_handler =
|
|
|
1306 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1307
|
|
|
1308 r->limit_rate = 0;
|
|
|
1309
|
|
|
1310 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1311 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1312 return;
|
|
|
1313 }
|
|
|
1314
|
|
132
|
1315 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1316 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1317
|
|
|
1318 tcp_nodelay = 1;
|
|
|
1319
|
|
|
1320 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1321 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1322 {
|
|
|
1323 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1324 "setsockopt(TCP_NODELAY) failed");
|
|
|
1325 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1326 return;
|
|
|
1327 }
|
|
|
1328
|
|
|
1329 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1330 }
|
|
|
1331
|
|
130
|
1332 size = u->buffer.last - u->buffer.pos;
|
|
|
1333
|
|
|
1334 if (size) {
|
|
|
1335 u->buffer.last = u->buffer.pos;
|
|
|
1336
|
|
|
1337 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1338 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1339 return;
|
|
|
1340 }
|
|
|
1341
|
|
132
|
1342 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1343
|
|
|
1344 } else {
|
|
|
1345 u->buffer.pos = u->buffer.start;
|
|
|
1346 u->buffer.last = u->buffer.start;
|
|
|
1347
|
|
|
1348 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1349 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1350 return;
|
|
|
1351 }
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 return;
|
|
|
1355 }
|
|
|
1356
|
|
28
|
1357 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1358
|
|
|
1359 #if 0
|
|
|
1360
|
|
|
1361 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1362 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1363 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1364 ngx_close_file_n " \"%s\" failed",
|
|
|
1365 u->cache->ctx.file.name.data);
|
|
|
1366 }
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 if (u->cachable) {
|
|
130
|
1370 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1371
|
|
|
1372 header->expires = u->cache->ctx.expires;
|
|
|
1373 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1374 header->date = u->cache->ctx.date;
|
|
|
1375 header->length = r->headers_out.content_length_n;
|
|
|
1376 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1377
|
|
|
1378 header->key_len = u->cache->ctx.key0.len;
|
|
|
1379 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1380 header->key[header->key_len] = LF;
|
|
|
1381 }
|
|
|
1382
|
|
|
1383 #endif
|
|
|
1384
|
|
130
|
1385 p = u->pipe;
|
|
28
|
1386
|
|
|
1387 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1388 p->output_ctx = r;
|
|
|
1389 p->tag = u->output.tag;
|
|
126
|
1390 p->bufs = u->conf->bufs;
|
|
28
|
1391 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1392 p->upstream = u->peer.connection;
|
|
132
|
1393 p->downstream = c;
|
|
28
|
1394 p->pool = r->pool;
|
|
132
|
1395 p->log = c->log;
|
|
126
|
1396
|
|
28
|
1397 p->cachable = u->cachable;
|
|
|
1398
|
|
50
|
1399 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1400 if (p->temp_file == NULL) {
|
|
28
|
1401 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1402 return;
|
|
|
1403 }
|
|
|
1404
|
|
|
1405 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1406 p->temp_file->file.log = c->log;
|
|
28
|
1407 p->temp_file->path = u->conf->temp_path;
|
|
|
1408 p->temp_file->pool = r->pool;
|
|
126
|
1409
|
|
28
|
1410 if (u->cachable) {
|
|
|
1411 p->temp_file->persistent = 1;
|
|
|
1412 } else {
|
|
216
|
1413 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1414 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1415 "to a temporary file";
|
|
|
1416 }
|
|
|
1417
|
|
|
1418 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1419 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1420
|
|
50
|
1421 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1422 if (p->preread_bufs == NULL) {
|
|
28
|
1423 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1424 return;
|
|
|
1425 }
|
|
130
|
1426 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1427 p->preread_bufs->next = NULL;
|
|
130
|
1428 u->buffer.recycled = 1;
|
|
|
1429
|
|
|
1430 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1431
|
|
|
1432 if (u->cachable) {
|
|
|
1433 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1434 if (p->buf_to_file == NULL) {
|
|
|
1435 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1436 return;
|
|
|
1437 }
|
|
130
|
1438 p->buf_to_file->pos = u->buffer.start;
|
|
|
1439 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1440 p->buf_to_file->temporary = 1;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1444 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1445 p->single_buf = 1;
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1449 p->free_bufs = 1;
|
|
|
1450
|
|
|
1451 /*
|
|
130
|
1452 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1453 * as though these bytes were read
|
|
|
1454 */
|
|
130
|
1455 u->buffer.last = u->buffer.pos;
|
|
28
|
1456
|
|
|
1457 if (u->conf->cyclic_temp_file) {
|
|
|
1458
|
|
|
1459 /*
|
|
|
1460 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1461 * because the writing a new data may interfere with sendfile()
|
|
|
1462 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1463 */
|
|
|
1464
|
|
|
1465 p->cyclic_temp_file = 1;
|
|
132
|
1466 c->sendfile = 0;
|
|
28
|
1467
|
|
|
1468 } else {
|
|
|
1469 p->cyclic_temp_file = 0;
|
|
|
1470 }
|
|
|
1471
|
|
|
1472 p->read_timeout = u->conf->read_timeout;
|
|
|
1473 p->send_timeout = clcf->send_timeout;
|
|
|
1474 p->send_lowat = clcf->send_lowat;
|
|
|
1475
|
|
58
|
1476 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1477 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1478
|
|
|
1479 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1480 }
|
|
|
1481
|
|
|
1482
|
|
36
|
1483 static void
|
|
130
|
1484 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1485 {
|
|
|
1486 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1487 }
|
|
|
1488
|
|
|
1489
|
|
|
1490 static void
|
|
|
1491 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1492 {
|
|
|
1493 size_t size;
|
|
|
1494 ssize_t n;
|
|
|
1495 ngx_buf_t *b;
|
|
132
|
1496 ngx_int_t rc;
|
|
130
|
1497 ngx_uint_t do_write;
|
|
132
|
1498 ngx_connection_t *c, *client;
|
|
130
|
1499 ngx_http_request_t *r;
|
|
|
1500 ngx_http_upstream_t *u;
|
|
|
1501 ngx_http_core_loc_conf_t *clcf;
|
|
|
1502
|
|
|
1503 c = ev->data;
|
|
244
|
1504 r = c->data;
|
|
|
1505 u = r->upstream;
|
|
130
|
1506
|
|
|
1507 if (ev->write) {
|
|
|
1508 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1509 "http upstream process non buffered downstream");
|
|
|
1510 c->log->action = "sending to client";
|
|
|
1511
|
|
|
1512 } else {
|
|
|
1513 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1514 "http upstream process non buffered upstream");
|
|
|
1515 c->log->action = "reading upstream";
|
|
|
1516 }
|
|
|
1517
|
|
|
1518 if (ev->timedout) {
|
|
|
1519 if (ev->write) {
|
|
|
1520 c->timedout = 1;
|
|
160
|
1521 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1522
|
|
130
|
1523 } else {
|
|
160
|
1524 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1525 }
|
|
244
|
1526
|
|
|
1527 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1528 return;
|
|
130
|
1529 }
|
|
|
1530
|
|
132
|
1531 client = r->connection;
|
|
130
|
1532
|
|
|
1533 b = &u->buffer;
|
|
|
1534
|
|
|
1535 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1536
|
|
206
|
1537 do_write = ev->write || u->length == 0;
|
|
130
|
1538
|
|
|
1539 for ( ;; ) {
|
|
|
1540
|
|
|
1541 if (do_write) {
|
|
|
1542
|
|
|
1543 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1544 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1545
|
|
|
1546 if (client->destroyed) {
|
|
|
1547 return;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 if (rc == NGX_ERROR) {
|
|
130
|
1551 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1552 return;
|
|
|
1553 }
|
|
|
1554
|
|
|
1555 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1556 &u->out_bufs, u->output.tag);
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 if (u->busy_bufs == NULL) {
|
|
|
1560
|
|
|
1561 if (u->length == 0
|
|
|
1562 || u->peer.connection->read->eof
|
|
|
1563 || u->peer.connection->read->error)
|
|
|
1564 {
|
|
|
1565 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1566 return;
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 b->pos = b->start;
|
|
|
1570 b->last = b->start;
|
|
|
1571 }
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 size = b->end - b->last;
|
|
|
1575
|
|
|
1576 if (size > u->length) {
|
|
|
1577 size = u->length;
|
|
|
1578 }
|
|
|
1579
|
|
|
1580 if (size && u->peer.connection->read->ready) {
|
|
206
|
1581
|
|
130
|
1582 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1583
|
|
|
1584 if (n == NGX_AGAIN) {
|
|
|
1585 break;
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 if (n > 0) {
|
|
|
1589 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1590 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1591 return;
|
|
|
1592 }
|
|
|
1593 }
|
|
|
1594
|
|
|
1595 do_write = 1;
|
|
|
1596
|
|
|
1597 continue;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 break;
|
|
|
1601 }
|
|
|
1602
|
|
132
|
1603 if (client->data == r) {
|
|
|
1604 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1605 == NGX_ERROR)
|
|
|
1606 {
|
|
|
1607 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1608 return;
|
|
|
1609 }
|
|
130
|
1610 }
|
|
|
1611
|
|
132
|
1612 if (client->write->active) {
|
|
|
1613 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1614
|
|
|
1615 } else if (client->write->timer_set) {
|
|
|
1616 ngx_del_timer(client->write);
|
|
130
|
1617 }
|
|
|
1618
|
|
|
1619 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1620 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1621 return;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624 if (u->peer.connection->read->active) {
|
|
|
1625 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1626
|
|
132
|
1627 } else if (u->peer.connection->read->timer_set) {
|
|
|
1628 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1629 }
|
|
|
1630 }
|
|
|
1631
|
|
|
1632
|
|
|
1633 static ngx_int_t
|
|
|
1634 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1635 {
|
|
|
1636 return NGX_OK;
|
|
|
1637 }
|
|
|
1638
|
|
|
1639
|
|
|
1640 static ngx_int_t
|
|
|
1641 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1642 {
|
|
|
1643 ngx_http_request_t *r = data;
|
|
|
1644
|
|
|
1645 ngx_buf_t *b;
|
|
|
1646 ngx_chain_t *cl, **ll;
|
|
|
1647 ngx_http_upstream_t *u;
|
|
|
1648
|
|
|
1649 u = r->upstream;
|
|
|
1650
|
|
|
1651 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1652 ll = &cl->next;
|
|
|
1653 }
|
|
|
1654
|
|
|
1655 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1656 if (cl == NULL) {
|
|
|
1657 return NGX_ERROR;
|
|
|
1658 }
|
|
|
1659
|
|
|
1660 *ll = cl;
|
|
|
1661
|
|
|
1662 cl->buf->flush = 1;
|
|
|
1663 cl->buf->memory = 1;
|
|
|
1664
|
|
|
1665 b = &u->buffer;
|
|
|
1666
|
|
|
1667 cl->buf->pos = b->last;
|
|
|
1668 b->last += bytes;
|
|
|
1669 cl->buf->last = b->last;
|
|
|
1670
|
|
|
1671 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1672 return NGX_OK;
|
|
|
1673 }
|
|
|
1674
|
|
|
1675 u->length -= bytes;
|
|
|
1676
|
|
|
1677 return NGX_OK;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680
|
|
|
1681 static void
|
|
58
|
1682 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1683 {
|
|
|
1684 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1685 }
|
|
|
1686
|
|
|
1687
|
|
|
1688 static void
|
|
36
|
1689 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1690 {
|
|
58
|
1691 ngx_event_pipe_t *p;
|
|
132
|
1692 ngx_connection_t *c, *downstream;
|
|
28
|
1693 ngx_http_request_t *r;
|
|
|
1694 ngx_http_upstream_t *u;
|
|
|
1695
|
|
|
1696 c = ev->data;
|
|
|
1697 r = c->data;
|
|
|
1698 u = r->upstream;
|
|
132
|
1699 downstream = r->connection;
|
|
28
|
1700
|
|
|
1701 if (ev->write) {
|
|
32
|
1702 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1703 "http upstream process downstream");
|
|
|
1704 c->log->action = "sending to client";
|
|
126
|
1705
|
|
28
|
1706 } else {
|
|
32
|
1707 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1708 "http upstream process upstream");
|
|
|
1709 c->log->action = "reading upstream";
|
|
28
|
1710 }
|
|
126
|
1711
|
|
130
|
1712 p = u->pipe;
|
|
28
|
1713
|
|
|
1714 if (ev->timedout) {
|
|
|
1715 if (ev->write) {
|
|
76
|
1716 if (ev->delayed) {
|
|
|
1717
|
|
|
1718 ev->timedout = 0;
|
|
|
1719 ev->delayed = 0;
|
|
|
1720
|
|
|
1721 if (!ev->ready) {
|
|
|
1722 ngx_add_timer(ev, p->send_timeout);
|
|
|
1723
|
|
|
1724 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1725 {
|
|
|
1726 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1727 return;
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 return;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1734
|
|
|
1735 if (downstream->destroyed) {
|
|
|
1736 return;
|
|
|
1737 }
|
|
|
1738
|
|
76
|
1739 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1740 return;
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 } else {
|
|
|
1744 p->downstream_error = 1;
|
|
126
|
1745 c->timedout = 1;
|
|
160
|
1746 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1747 }
|
|
28
|
1748
|
|
|
1749 } else {
|
|
126
|
1750 p->upstream_error = 1;
|
|
160
|
1751 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1752 }
|
|
|
1753
|
|
|
1754 } else {
|
|
76
|
1755 if (ev->write && ev->delayed) {
|
|
|
1756 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1757 "http downstream delayed");
|
|
|
1758
|
|
|
1759 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1760 return;
|
|
|
1761 }
|
|
|
1762
|
|
|
1763 return;
|
|
|
1764 }
|
|
|
1765
|
|
28
|
1766 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1767
|
|
|
1768 if (downstream->destroyed) {
|
|
|
1769 return;
|
|
|
1770 }
|
|
|
1771
|
|
28
|
1772 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1773 return;
|
|
|
1774 }
|
|
|
1775 }
|
|
126
|
1776
|
|
28
|
1777 if (u->peer.connection) {
|
|
|
1778
|
|
|
1779 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1780
|
|
|
1781 if (p->upstream_done && u->cachable) {
|
|
|
1782 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1783 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1784 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1785 return;
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 } else if (p->upstream_eof && u->cachable) {
|
|
|
1789
|
|
|
1790 /* TODO: check length & update cache */
|
|
|
1791
|
|
|
1792 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1793 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1794 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1795 return;
|
|
|
1796 }
|
|
|
1797 }
|
|
|
1798
|
|
|
1799 #endif
|
|
|
1800
|
|
|
1801 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1802 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1803 "http upstream exit: %p", p->out);
|
|
28
|
1804 #if 0
|
|
|
1805 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1806 #endif
|
|
|
1807 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1808 return;
|
|
|
1809 }
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 if (p->downstream_error) {
|
|
32
|
1813 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1814 "http upstream downstream error");
|
|
28
|
1815
|
|
|
1816 if (!u->cachable && u->peer.connection) {
|
|
|
1817 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1818 }
|
|
|
1819 }
|
|
|
1820 }
|
|
|
1821
|
|
|
1822
|
|
36
|
1823 static void
|
|
|
1824 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1825 {
|
|
|
1826 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1827 "http upstream dummy handler");
|
|
|
1828 }
|
|
|
1829
|
|
|
1830
|
|
36
|
1831 static void
|
|
|
1832 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1833 ngx_uint_t ft_type)
|
|
28
|
1834 {
|
|
74
|
1835 ngx_uint_t status, down;
|
|
28
|
1836
|
|
|
1837 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1838 "http next upstream, %xD", ft_type);
|
|
|
1839
|
|
|
1840 #if 0
|
|
|
1841 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1842 #endif
|
|
|
1843
|
|
74
|
1844 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1845 down = 0;
|
|
|
1846 } else {
|
|
|
1847 down = 1;
|
|
28
|
1848 }
|
|
74
|
1849
|
|
|
1850 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1851
|
|
28
|
1852 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1853 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1854 "upstream timed out");
|
|
|
1855 }
|
|
126
|
1856
|
|
28
|
1857 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1858 status = 0;
|
|
|
1859
|
|
|
1860 } else {
|
|
|
1861 switch(ft_type) {
|
|
|
1862
|
|
|
1863 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1864 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1865 break;
|
|
|
1866
|
|
|
1867 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1868 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1869 break;
|
|
|
1870
|
|
|
1871 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1872 status = NGX_HTTP_NOT_FOUND;
|
|
|
1873 break;
|
|
|
1874
|
|
|
1875 /*
|
|
|
1876 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1877 * never reach here
|
|
|
1878 */
|
|
|
1879
|
|
|
1880 default:
|
|
|
1881 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1882 }
|
|
|
1883 }
|
|
|
1884
|
|
132
|
1885 if (r->connection->error) {
|
|
28
|
1886 ngx_http_upstream_finalize_request(r, u,
|
|
|
1887 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1888 return;
|
|
|
1889 }
|
|
|
1890
|
|
|
1891 if (status) {
|
|
|
1892 u->state->status = status;
|
|
|
1893
|
|
74
|
1894 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1895
|
|
|
1896 #if (NGX_HTTP_CACHE)
|
|
|
1897
|
|
|
1898 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1899 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1900 ngx_http_send_cached_response(r));
|
|
28
|
1901 return;
|
|
|
1902 }
|
|
|
1903
|
|
|
1904 #endif
|
|
|
1905
|
|
|
1906 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1907 return;
|
|
|
1908 }
|
|
|
1909 }
|
|
|
1910
|
|
|
1911 if (u->peer.connection) {
|
|
|
1912 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1913 "close http upstream connection: %d",
|
|
|
1914 u->peer.connection->fd);
|
|
126
|
1915 #if (NGX_HTTP_SSL)
|
|
|
1916 if (u->peer.connection->ssl) {
|
|
|
1917 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1918 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1919 }
|
|
|
1920 #endif
|
|
28
|
1921 ngx_close_connection(u->peer.connection);
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 #if 0
|
|
|
1925 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1926 ngx_http_upstream_busy_lock(p);
|
|
|
1927 return;
|
|
|
1928 }
|
|
|
1929 #endif
|
|
|
1930
|
|
|
1931 ngx_http_upstream_connect(r, u);
|
|
|
1932 }
|
|
|
1933
|
|
|
1934
|
|
36
|
1935 static void
|
|
118
|
1936 ngx_http_upstream_cleanup(void *data)
|
|
|
1937 {
|
|
|
1938 ngx_http_request_t *r = data;
|
|
|
1939
|
|
|
1940 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1941 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1942
|
|
|
1943 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1944 }
|
|
|
1945
|
|
|
1946
|
|
|
1947 static void
|
|
36
|
1948 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1949 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1950 {
|
|
112
|
1951 ngx_time_t *tp;
|
|
|
1952
|
|
32
|
1953 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1954 "finalize http upstream request: %i", rc);
|
|
28
|
1955
|
|
118
|
1956 *u->cleanup = NULL;
|
|
|
1957
|
|
112
|
1958 if (u->state->response_time) {
|
|
|
1959 tp = ngx_timeofday();
|
|
|
1960 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1961 - u->state->response_time;
|
|
|
1962 }
|
|
|
1963
|
|
28
|
1964 u->finalize_request(r, rc);
|
|
|
1965
|
|
|
1966 if (u->peer.connection) {
|
|
|
1967 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1968 "close http upstream connection: %d",
|
|
|
1969 u->peer.connection->fd);
|
|
126
|
1970 #if (NGX_HTTP_SSL)
|
|
|
1971
|
|
|
1972 /* TODO: do not shutdown persistent connection */
|
|
|
1973
|
|
|
1974 if (u->peer.connection->ssl) {
|
|
|
1975 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1976 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1977 }
|
|
|
1978 #endif
|
|
28
|
1979 ngx_close_connection(u->peer.connection);
|
|
|
1980 }
|
|
|
1981
|
|
32
|
1982 u->peer.connection = NULL;
|
|
|
1983
|
|
112
|
1984 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1985 {
|
|
|
1986 rc = 0;
|
|
|
1987 }
|
|
|
1988
|
|
130
|
1989 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1990 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1991 "http upstream temp fd: %d",
|
|
130
|
1992 u->pipe->temp_file->file.fd);
|
|
28
|
1993 }
|
|
|
1994
|
|
|
1995 #if 0
|
|
|
1996 if (u->cache) {
|
|
|
1997 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1998 "http upstream cache fd: %d",
|
|
28
|
1999 u->cache->ctx.file.fd);
|
|
|
2000 }
|
|
|
2001 #endif
|
|
|
2002
|
|
64
|
2003 if (rc == NGX_DECLINED) {
|
|
|
2004 return;
|
|
|
2005 }
|
|
|
2006
|
|
32
|
2007 r->connection->log->action = "sending to client";
|
|
|
2008
|
|
178
|
2009 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2010 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2011 }
|
|
|
2012
|
|
|
2013 ngx_http_finalize_request(r, rc);
|
|
|
2014 }
|
|
|
2015
|
|
|
2016
|
|
126
|
2017 #if (NGX_HTTP_SSL)
|
|
|
2018
|
|
|
2019 static void
|
|
|
2020 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
2021 {
|
|
|
2022 /* lock peer mutex */
|
|
|
2023
|
|
|
2024 if (peer->ssl_session) {
|
|
|
2025 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2026 }
|
|
|
2027
|
|
|
2028 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2029
|
|
|
2030 /* unlock peer mutex */
|
|
|
2031
|
|
|
2032 /*
|
|
|
2033 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2034 * and do not wait its "close notify" shutdown alert.
|
|
|
2035 * It is acceptable according to the TLS standard.
|
|
|
2036 */
|
|
|
2037
|
|
|
2038 c->ssl->no_wait_shutdown = 1;
|
|
|
2039
|
|
|
2040 (void) ngx_ssl_shutdown(c);
|
|
|
2041 }
|
|
|
2042
|
|
|
2043 #endif
|
|
|
2044
|
|
|
2045
|
|
58
|
2046 static ngx_int_t
|
|
|
2047 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2048 ngx_uint_t offset)
|
|
126
|
2049 {
|
|
58
|
2050 ngx_table_elt_t **ph;
|
|
126
|
2051
|
|
58
|
2052 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2053
|
|
|
2054 if (*ph == NULL) {
|
|
|
2055 *ph = h;
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 return NGX_OK;
|
|
|
2059 }
|
|
|
2060
|
|
|
2061
|
|
|
2062 static ngx_int_t
|
|
|
2063 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2064 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2065 {
|
|
|
2066 ngx_array_t *pa;
|
|
|
2067 ngx_table_elt_t **ph;
|
|
|
2068
|
|
|
2069 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2070
|
|
|
2071 if (pa->elts == NULL) {
|
|
|
2072 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2073 {
|
|
|
2074 return NGX_ERROR;
|
|
|
2075 }
|
|
|
2076 }
|
|
|
2077
|
|
|
2078 ph = ngx_array_push(pa);
|
|
|
2079 if (ph == NULL) {
|
|
|
2080 return NGX_ERROR;
|
|
|
2081 }
|
|
|
2082
|
|
|
2083 *ph = h;
|
|
|
2084
|
|
|
2085 return NGX_OK;
|
|
|
2086 }
|
|
|
2087
|
|
|
2088
|
|
|
2089 static ngx_int_t
|
|
|
2090 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2091 ngx_uint_t offset)
|
|
|
2092 {
|
|
|
2093 return NGX_OK;
|
|
|
2094 }
|
|
|
2095
|
|
|
2096
|
|
|
2097 static ngx_int_t
|
|
76
|
2098 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2099 ngx_uint_t offset)
|
|
126
|
2100 {
|
|
76
|
2101 ngx_int_t n;
|
|
|
2102
|
|
|
2103 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2104
|
|
|
2105 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2106
|
|
|
2107 if (n != NGX_ERROR) {
|
|
|
2108 r->limit_rate = (size_t) n;
|
|
|
2109 }
|
|
|
2110
|
|
|
2111 return NGX_OK;
|
|
|
2112 }
|
|
|
2113
|
|
|
2114
|
|
|
2115 static ngx_int_t
|
|
198
|
2116 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2117 ngx_uint_t offset)
|
|
|
2118 {
|
|
|
2119 u_char c0, c1, c2;
|
|
|
2120
|
|
|
2121 if (r->upstream->conf->change_buffering) {
|
|
|
2122
|
|
|
2123 if (h->value.len == 2) {
|
|
|
2124 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2125 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2126
|
|
|
2127 if (c0 == 'n' && c1 == 'o') {
|
|
|
2128 r->upstream->buffering = 0;
|
|
|
2129 }
|
|
|
2130
|
|
|
2131 } else if (h->value.len == 3) {
|
|
|
2132 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2133 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2134 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2135
|
|
|
2136 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2137 r->upstream->buffering = 1;
|
|
|
2138 }
|
|
|
2139 }
|
|
|
2140 }
|
|
|
2141
|
|
|
2142 return NGX_OK;
|
|
|
2143 }
|
|
|
2144
|
|
|
2145
|
|
|
2146 static ngx_int_t
|
|
206
|
2147 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2148 ngx_uint_t offset)
|
|
|
2149 {
|
|
|
2150 r->headers_out.override_charset = &h->value;
|
|
|
2151
|
|
|
2152 return NGX_OK;
|
|
|
2153 }
|
|
|
2154
|
|
|
2155
|
|
|
2156 static ngx_int_t
|
|
58
|
2157 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2158 ngx_uint_t offset)
|
|
|
2159 {
|
|
122
|
2160 ngx_table_elt_t *ho, **ph;
|
|
58
|
2161
|
|
|
2162 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2163 if (ho == NULL) {
|
|
|
2164 return NGX_ERROR;
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 *ho = *h;
|
|
|
2168
|
|
122
|
2169 if (offset) {
|
|
|
2170 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2171 *ph = ho;
|
|
|
2172 }
|
|
|
2173
|
|
58
|
2174 return NGX_OK;
|
|
|
2175 }
|
|
|
2176
|
|
|
2177
|
|
|
2178 static ngx_int_t
|
|
|
2179 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2180 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2181 {
|
|
|
2182 ngx_array_t *pa;
|
|
|
2183 ngx_table_elt_t *ho, **ph;
|
|
|
2184
|
|
|
2185 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2186
|
|
|
2187 if (pa->elts == NULL) {
|
|
|
2188 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2189 {
|
|
|
2190 return NGX_ERROR;
|
|
|
2191 }
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 ph = ngx_array_push(pa);
|
|
|
2195 if (ph == NULL) {
|
|
|
2196 return NGX_ERROR;
|
|
|
2197 }
|
|
|
2198
|
|
|
2199 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2200 if (ho == NULL) {
|
|
|
2201 return NGX_ERROR;
|
|
|
2202 }
|
|
|
2203
|
|
|
2204 *ho = *h;
|
|
|
2205 *ph = ho;
|
|
|
2206
|
|
|
2207 return NGX_OK;
|
|
|
2208 }
|
|
|
2209
|
|
|
2210
|
|
|
2211 static ngx_int_t
|
|
|
2212 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2213 ngx_uint_t offset)
|
|
|
2214 {
|
|
206
|
2215 u_char *p, *last;
|
|
|
2216
|
|
|
2217 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2218 r->headers_out.content_type = h->value;
|
|
|
2219
|
|
206
|
2220 for (p = h->value.data; *p; p++) {
|
|
|
2221
|
|
|
2222 if (*p != ';') {
|
|
|
2223 continue;
|
|
|
2224 }
|
|
|
2225
|
|
|
2226 last = p;
|
|
|
2227
|
|
|
2228 while (*++p == ' ') { /* void */ }
|
|
|
2229
|
|
|
2230 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
|
2231 continue;
|
|
|
2232 }
|
|
|
2233
|
|
|
2234 p += 8;
|
|
|
2235
|
|
|
2236 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2237
|
|
|
2238 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2239 r->headers_out.charset.data = p;
|
|
|
2240 }
|
|
|
2241
|
|
58
|
2242 return NGX_OK;
|
|
|
2243 }
|
|
|
2244
|
|
|
2245
|
|
|
2246 static ngx_int_t
|
|
|
2247 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2248 ngx_uint_t offset)
|
|
|
2249 {
|
|
|
2250 ngx_table_elt_t *ho;
|
|
|
2251
|
|
|
2252 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2253 if (ho == NULL) {
|
|
|
2254 return NGX_ERROR;
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 *ho = *h;
|
|
|
2258
|
|
|
2259 r->headers_out.content_length = ho;
|
|
|
2260 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2261
|
|
|
2262 return NGX_OK;
|
|
|
2263 }
|
|
|
2264
|
|
|
2265
|
|
|
2266 static ngx_int_t
|
|
|
2267 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2268 ngx_uint_t offset)
|
|
|
2269 {
|
|
|
2270 ngx_int_t rc;
|
|
|
2271 ngx_table_elt_t *ho;
|
|
|
2272
|
|
|
2273 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2274 if (ho == NULL) {
|
|
|
2275 return NGX_ERROR;
|
|
|
2276 }
|
|
|
2277
|
|
|
2278 *ho = *h;
|
|
|
2279
|
|
|
2280 if (r->upstream->rewrite_redirect) {
|
|
|
2281 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2282
|
|
78
|
2283 if (rc == NGX_DECLINED) {
|
|
|
2284 return NGX_OK;
|
|
|
2285 }
|
|
|
2286
|
|
58
|
2287 if (rc == NGX_OK) {
|
|
|
2288 r->headers_out.location = ho;
|
|
|
2289
|
|
|
2290 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2291 "rewritten location: \"%V\"", &ho->value);
|
|
|
2292 }
|
|
|
2293
|
|
|
2294 return rc;
|
|
|
2295 }
|
|
|
2296
|
|
|
2297 /*
|
|
|
2298 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2299 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2300 */
|
|
|
2301
|
|
|
2302 return NGX_OK;
|
|
|
2303 }
|
|
|
2304
|
|
|
2305
|
|
|
2306 static ngx_int_t
|
|
|
2307 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2308 ngx_uint_t offset)
|
|
|
2309 {
|
|
|
2310 u_char *p;
|
|
|
2311 ngx_int_t rc;
|
|
|
2312 ngx_table_elt_t *ho;
|
|
|
2313
|
|
|
2314 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2315 if (ho == NULL) {
|
|
|
2316 return NGX_ERROR;
|
|
|
2317 }
|
|
|
2318
|
|
|
2319 *ho = *h;
|
|
|
2320
|
|
|
2321 if (r->upstream->rewrite_redirect) {
|
|
|
2322
|
|
|
2323 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2324
|
|
|
2325 if (p) {
|
|
|
2326 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2327
|
|
|
2328 } else {
|
|
|
2329 return NGX_OK;
|
|
|
2330 }
|
|
|
2331
|
|
78
|
2332 if (rc == NGX_DECLINED) {
|
|
|
2333 return NGX_OK;
|
|
|
2334 }
|
|
|
2335
|
|
58
|
2336 #if (NGX_DEBUG)
|
|
|
2337 if (rc == NGX_OK) {
|
|
|
2338 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2339 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2340 }
|
|
|
2341 #endif
|
|
|
2342
|
|
|
2343 return rc;
|
|
|
2344 }
|
|
|
2345
|
|
|
2346 return NGX_OK;
|
|
|
2347 }
|
|
|
2348
|
|
|
2349
|
|
|
2350 #if (NGX_HTTP_GZIP)
|
|
|
2351
|
|
|
2352 static ngx_int_t
|
|
|
2353 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2354 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2355 {
|
|
|
2356 ngx_table_elt_t *ho;
|
|
|
2357
|
|
|
2358 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2359 if (ho == NULL) {
|
|
|
2360 return NGX_ERROR;
|
|
|
2361 }
|
|
|
2362
|
|
|
2363 *ho = *h;
|
|
|
2364
|
|
|
2365 r->headers_out.content_encoding = ho;
|
|
|
2366
|
|
|
2367 return NGX_OK;
|
|
|
2368 }
|
|
|
2369
|
|
|
2370 #endif
|
|
|
2371
|
|
|
2372
|
|
36
|
2373 static size_t
|
|
|
2374 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2375 {
|
|
|
2376 if (r->upstream) {
|
|
|
2377 return r->upstream->states.nelts * (3 + 2);
|
|
|
2378 }
|
|
|
2379
|
|
|
2380 return 1;
|
|
|
2381 }
|
|
|
2382
|
|
|
2383
|
|
36
|
2384 static u_char *
|
|
|
2385 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2386 ngx_http_log_op_t *op)
|
|
28
|
2387 {
|
|
|
2388 ngx_uint_t i;
|
|
|
2389 ngx_http_upstream_t *u;
|
|
|
2390 ngx_http_upstream_state_t *state;
|
|
|
2391
|
|
|
2392 u = r->upstream;
|
|
|
2393
|
|
122
|
2394 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2395 *buf = '-';
|
|
|
2396 return buf + 1;
|
|
|
2397 }
|
|
|
2398
|
|
|
2399 i = 0;
|
|
|
2400 state = u->states.elts;
|
|
|
2401
|
|
|
2402 for ( ;; ) {
|
|
|
2403 if (state[i].status == 0) {
|
|
|
2404 *buf++ = '-';
|
|
|
2405
|
|
|
2406 } else {
|
|
|
2407 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2408 }
|
|
|
2409
|
|
|
2410 if (++i == u->states.nelts) {
|
|
|
2411 return buf;
|
|
|
2412 }
|
|
|
2413
|
|
|
2414 *buf++ = ',';
|
|
|
2415 *buf++ = ' ';
|
|
|
2416 }
|
|
|
2417 }
|
|
|
2418
|
|
|
2419
|
|
122
|
2420 static size_t
|
|
|
2421 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2422 uintptr_t data)
|
|
|
2423 {
|
|
|
2424 if (r->upstream) {
|
|
|
2425 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2426 }
|
|
|
2427
|
|
|
2428 return 1;
|
|
|
2429 }
|
|
|
2430
|
|
|
2431
|
|
58
|
2432 static u_char *
|
|
112
|
2433 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2434 ngx_http_log_op_t *op)
|
|
|
2435 {
|
|
|
2436 ngx_uint_t i;
|
|
|
2437 ngx_http_upstream_t *u;
|
|
|
2438 ngx_http_upstream_state_t *state;
|
|
|
2439
|
|
|
2440 u = r->upstream;
|
|
|
2441
|
|
122
|
2442 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2443 *buf = '-';
|
|
|
2444 return buf + 1;
|
|
|
2445 }
|
|
|
2446
|
|
|
2447 i = 0;
|
|
|
2448 state = u->states.elts;
|
|
|
2449
|
|
|
2450 for ( ;; ) {
|
|
|
2451 if (state[i].status == 0) {
|
|
|
2452 *buf++ = '-';
|
|
|
2453
|
|
|
2454 } else {
|
|
|
2455 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2456 state[i].response_time / 1000,
|
|
|
2457 state[i].response_time % 1000);
|
|
|
2458 }
|
|
|
2459
|
|
|
2460 if (++i == u->states.nelts) {
|
|
|
2461 return buf;
|
|
|
2462 }
|
|
|
2463
|
|
|
2464 *buf++ = ',';
|
|
|
2465 *buf++ = ' ';
|
|
|
2466 }
|
|
|
2467 }
|
|
|
2468
|
|
|
2469
|
|
36
|
2470 static ngx_int_t
|
|
122
|
2471 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2472 {
|
|
122
|
2473 ngx_http_variable_t *var, *v;
|
|
28
|
2474 ngx_http_log_op_name_t *op;
|
|
|
2475
|
|
122
|
2476 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2477 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2478 if (var == NULL) {
|
|
|
2479 return NGX_ERROR;
|
|
|
2480 }
|
|
|
2481
|
|
186
|
2482 var->get_handler = v->get_handler;
|
|
122
|
2483 var->data = v->data;
|
|
|
2484 }
|
|
|
2485
|
|
28
|
2486 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2487 op->run = NULL;
|
|
|
2488
|
|
|
2489 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2490 if (op->name.len == 0) {
|
|
|
2491 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2492 }
|
|
|
2493 }
|
|
|
2494
|
|
|
2495 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2496
|
|
|
2497 return NGX_OK;
|
|
|
2498 }
|
|
58
|
2499
|
|
|
2500
|
|
122
|
2501 static ngx_int_t
|
|
|
2502 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2503 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2504 {
|
|
|
2505 u_char *p;
|
|
|
2506 size_t len;
|
|
|
2507 ngx_uint_t i;
|
|
|
2508 ngx_http_upstream_t *u;
|
|
|
2509 ngx_http_upstream_state_t *state;
|
|
|
2510
|
|
|
2511 v->valid = 1;
|
|
|
2512 v->no_cachable = 0;
|
|
|
2513 v->not_found = 0;
|
|
|
2514
|
|
|
2515 u = r->upstream;
|
|
|
2516
|
|
|
2517 if (u == NULL || u->states.nelts == 0) {
|
|
|
2518 v->not_found = 1;
|
|
|
2519 return NGX_OK;
|
|
|
2520 }
|
|
|
2521
|
|
|
2522 len = u->states.nelts * (3 + 2);
|
|
|
2523
|
|
|
2524 p = ngx_palloc(r->pool, len);
|
|
|
2525 if (p == NULL) {
|
|
|
2526 return NGX_ERROR;
|
|
|
2527 }
|
|
|
2528
|
|
|
2529 v->data = p;
|
|
|
2530
|
|
|
2531 i = 0;
|
|
|
2532 state = u->states.elts;
|
|
|
2533
|
|
|
2534 for ( ;; ) {
|
|
|
2535 if (state[i].status == 0) {
|
|
|
2536 *p++ = '-';
|
|
|
2537
|
|
|
2538 } else {
|
|
|
2539 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2540 }
|
|
|
2541
|
|
|
2542 if (++i == u->states.nelts) {
|
|
|
2543 break;
|
|
|
2544 }
|
|
|
2545
|
|
|
2546 *p++ = ',';
|
|
|
2547 *p++ = ' ';
|
|
|
2548 }
|
|
|
2549
|
|
|
2550 v->len = p - v->data;
|
|
|
2551
|
|
|
2552 return NGX_OK;
|
|
|
2553 }
|
|
|
2554
|
|
|
2555
|
|
|
2556 static ngx_int_t
|
|
|
2557 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2558 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2559 {
|
|
|
2560 u_char *p;
|
|
|
2561 size_t len;
|
|
|
2562 ngx_uint_t i;
|
|
|
2563 ngx_http_upstream_t *u;
|
|
|
2564 ngx_http_upstream_state_t *state;
|
|
|
2565
|
|
|
2566 v->valid = 1;
|
|
|
2567 v->no_cachable = 0;
|
|
|
2568 v->not_found = 0;
|
|
|
2569
|
|
|
2570 u = r->upstream;
|
|
|
2571
|
|
|
2572 if (u == NULL || u->states.nelts == 0) {
|
|
|
2573 v->not_found = 1;
|
|
|
2574 return NGX_OK;
|
|
|
2575 }
|
|
|
2576
|
|
|
2577 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2578
|
|
|
2579 p = ngx_palloc(r->pool, len);
|
|
|
2580 if (p == NULL) {
|
|
|
2581 return NGX_ERROR;
|
|
|
2582 }
|
|
|
2583
|
|
|
2584 v->data = p;
|
|
|
2585
|
|
|
2586 i = 0;
|
|
|
2587 state = u->states.elts;
|
|
|
2588
|
|
|
2589 for ( ;; ) {
|
|
|
2590 if (state[i].status == 0) {
|
|
|
2591 *p++ = '-';
|
|
|
2592
|
|
|
2593 } else {
|
|
|
2594 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2595 state[i].response_time / 1000,
|
|
|
2596 state[i].response_time % 1000);
|
|
|
2597 }
|
|
|
2598
|
|
|
2599 if (++i == u->states.nelts) {
|
|
|
2600 break;
|
|
|
2601 }
|
|
|
2602
|
|
|
2603 *p++ = ',';
|
|
|
2604 *p++ = ' ';
|
|
|
2605 }
|
|
|
2606
|
|
|
2607 v->len = p - v->data;
|
|
|
2608
|
|
|
2609 return NGX_OK;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612
|
|
200
|
2613 static char *
|
|
|
2614 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2615 {
|
|
|
2616 char *rv;
|
|
|
2617 void *mconf;
|
|
|
2618 ngx_str_t *value;
|
|
|
2619 ngx_url_t u;
|
|
|
2620 ngx_uint_t i, j, m, n;
|
|
|
2621 ngx_conf_t pcf;
|
|
|
2622 ngx_peers_t **peers;
|
|
|
2623 ngx_http_module_t *module;
|
|
|
2624 ngx_http_conf_ctx_t *ctx;
|
|
|
2625 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2626
|
|
|
2627 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2628 if (ctx == NULL) {
|
|
|
2629 return NGX_CONF_ERROR;
|
|
|
2630 }
|
|
|
2631
|
|
|
2632 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2633
|
|
|
2634 value = cf->args->elts;
|
|
|
2635 u.host = value[1];
|
|
|
2636
|
|
|
2637 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2638 if (uscf == NULL) {
|
|
|
2639 return NGX_CONF_ERROR;
|
|
|
2640 }
|
|
|
2641
|
|
|
2642 /* the upstream{}'s srv_conf */
|
|
|
2643
|
|
|
2644 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2645 if (ctx->srv_conf == NULL) {
|
|
|
2646 return NGX_CONF_ERROR;
|
|
|
2647 }
|
|
|
2648
|
|
|
2649 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2650
|
|
|
2651
|
|
|
2652 /* the upstream{}'s loc_conf */
|
|
|
2653
|
|
|
2654 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2655 if (ctx->loc_conf == NULL) {
|
|
|
2656 return NGX_CONF_ERROR;
|
|
|
2657 }
|
|
|
2658
|
|
|
2659 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2660 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2661 continue;
|
|
|
2662 }
|
|
|
2663
|
|
|
2664 module = ngx_modules[m]->ctx;
|
|
|
2665
|
|
|
2666 if (module->create_loc_conf) {
|
|
|
2667 mconf = module->create_loc_conf(cf);
|
|
|
2668 if (mconf == NULL) {
|
|
|
2669 return NGX_CONF_ERROR;
|
|
|
2670 }
|
|
|
2671
|
|
|
2672 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2673 }
|
|
|
2674 }
|
|
|
2675
|
|
|
2676
|
|
|
2677 /* parse inside upstream{} */
|
|
|
2678
|
|
|
2679 pcf = *cf;
|
|
|
2680 cf->ctx = ctx;
|
|
|
2681 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2682
|
|
|
2683 rv = ngx_conf_parse(cf, NULL);
|
|
|
2684
|
|
|
2685 *cf = pcf;
|
|
|
2686
|
|
|
2687 if (rv != NGX_CONF_OK) {
|
|
|
2688 return rv;
|
|
|
2689 }
|
|
|
2690
|
|
|
2691 if (uscf->servers == NULL) {
|
|
|
2692 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2693 "no servers are inside upstream");
|
|
|
2694 return NGX_CONF_ERROR;
|
|
|
2695 }
|
|
|
2696
|
|
|
2697 peers = uscf->servers->elts;
|
|
|
2698
|
|
|
2699 if (uscf->servers->nelts == 1) {
|
|
|
2700 uscf->peers = peers[0];
|
|
|
2701 }
|
|
|
2702
|
|
|
2703 n = 0;
|
|
|
2704
|
|
|
2705 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2706 n += peers[i]->number;
|
|
|
2707 }
|
|
|
2708
|
|
|
2709 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2710 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2711 if (uscf->peers == NULL) {
|
|
|
2712 return NGX_CONF_ERROR;
|
|
|
2713 }
|
|
|
2714
|
|
|
2715 uscf->peers->number = n;
|
|
|
2716
|
|
|
2717 n = 0;
|
|
|
2718
|
|
|
2719 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2720 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2721 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2722 }
|
|
|
2723 }
|
|
|
2724
|
|
|
2725 return rv;
|
|
|
2726 }
|
|
|
2727
|
|
|
2728
|
|
|
2729 static char *
|
|
|
2730 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2731 {
|
|
|
2732 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2733
|
|
|
2734 ngx_str_t *value;
|
|
|
2735 ngx_url_t u;
|
|
212
|
2736 ngx_int_t weight;
|
|
|
2737 ngx_uint_t i;
|
|
200
|
2738 ngx_peers_t **peers;
|
|
|
2739
|
|
|
2740 if (uscf->servers == NULL) {
|
|
|
2741 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2742 if (uscf->servers == NULL) {
|
|
|
2743 return NGX_CONF_ERROR;
|
|
|
2744 }
|
|
|
2745 }
|
|
|
2746
|
|
|
2747 peers = ngx_array_push(uscf->servers);
|
|
|
2748 if (peers == NULL) {
|
|
|
2749 return NGX_CONF_ERROR;
|
|
|
2750 }
|
|
|
2751
|
|
|
2752 value = cf->args->elts;
|
|
|
2753
|
|
|
2754 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2755
|
|
|
2756 u.url = value[1];
|
|
|
2757 u.default_portn = 80;
|
|
|
2758
|
|
|
2759 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2760 if (u.err) {
|
|
|
2761 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2762 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2763 }
|
|
|
2764
|
|
|
2765 return NGX_CONF_ERROR;
|
|
|
2766 }
|
|
|
2767
|
|
212
|
2768 weight = 1;
|
|
|
2769
|
|
|
2770 if (cf->args->nelts == 3) {
|
|
|
2771
|
|
|
2772 value = &value[2];
|
|
|
2773
|
|
|
2774 if (ngx_strncmp(value->data, "weight=", 7) == 0) {
|
|
|
2775
|
|
|
2776 weight = ngx_atoi(&value->data[7], value->len - 7);
|
|
|
2777
|
|
|
2778 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2779 goto invalid;
|
|
|
2780 }
|
|
|
2781
|
|
|
2782 } else {
|
|
|
2783 goto invalid;
|
|
|
2784 }
|
|
|
2785 }
|
|
|
2786
|
|
|
2787 for (i = 0; i < u.peers->number; i++) {
|
|
|
2788 u.peers->peer[i].weight = weight;
|
|
|
2789 u.peers->peer[i].current_weight = weight;
|
|
|
2790 u.peers->peer[i].max_fails = NGX_CONF_UNSET_UINT;
|
|
|
2791 u.peers->peer[i].fail_timeout = NGX_CONF_UNSET;
|
|
|
2792 }
|
|
|
2793
|
|
200
|
2794 *peers = u.peers;
|
|
|
2795
|
|
|
2796 return NGX_CONF_OK;
|
|
212
|
2797
|
|
|
2798 invalid:
|
|
|
2799
|
|
|
2800 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", value);
|
|
|
2801
|
|
|
2802 return NGX_CONF_ERROR;
|
|
200
|
2803 }
|
|
|
2804
|
|
|
2805
|
|
|
2806 ngx_http_upstream_srv_conf_t *
|
|
|
2807 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2808 {
|
|
|
2809 ngx_uint_t i;
|
|
|
2810 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2811 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2812
|
|
|
2813 if (u->upstream) {
|
|
|
2814 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2815 if (u->err) {
|
|
|
2816 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2817 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2818 }
|
|
|
2819
|
|
|
2820 return NULL;
|
|
|
2821 }
|
|
|
2822
|
|
|
2823 if (u->peers) {
|
|
|
2824 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2825 if (uscf == NULL) {
|
|
|
2826 return NULL;
|
|
|
2827 }
|
|
|
2828
|
|
|
2829 uscf->peers = u->peers;
|
|
|
2830
|
|
|
2831 return uscf;
|
|
|
2832 }
|
|
|
2833 }
|
|
|
2834
|
|
|
2835 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2836
|
|
|
2837 uscfp = umcf->upstreams.elts;
|
|
|
2838
|
|
|
2839 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2840 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2841 continue;
|
|
|
2842 }
|
|
|
2843
|
|
|
2844 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2845 == 0)
|
|
|
2846 {
|
|
|
2847 return uscfp[i];
|
|
|
2848 }
|
|
|
2849 }
|
|
|
2850
|
|
|
2851 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2852 if (uscf == NULL) {
|
|
|
2853 return NULL;
|
|
|
2854 }
|
|
|
2855
|
|
|
2856 uscf->host = u->host;
|
|
|
2857 uscf->file_name = cf->conf_file->file.name;
|
|
|
2858 uscf->line = cf->conf_file->line;
|
|
|
2859 uscf->port = u->default_portn;
|
|
|
2860
|
|
|
2861 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2862 if (uscfp == NULL) {
|
|
|
2863 return NULL;
|
|
|
2864 }
|
|
|
2865
|
|
|
2866 *uscfp = uscf;
|
|
|
2867
|
|
|
2868 return uscf;
|
|
|
2869 }
|
|
|
2870
|
|
|
2871
|
|
58
|
2872 static void *
|
|
|
2873 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2874 {
|
|
|
2875 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2876
|
|
|
2877 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2878 if (umcf == NULL) {
|
|
|
2879 return NULL;
|
|
|
2880 }
|
|
|
2881
|
|
200
|
2882 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2883 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2884 != NGX_OK)
|
|
|
2885 {
|
|
|
2886 return NGX_CONF_ERROR;
|
|
|
2887 }
|
|
|
2888
|
|
58
|
2889 return umcf;
|
|
|
2890 }
|
|
|
2891
|
|
|
2892
|
|
|
2893 static char *
|
|
200
|
2894 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
2895 {
|
|
|
2896 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2897
|
|
200
|
2898 ngx_uint_t i;
|
|
|
2899 ngx_array_t headers_in;
|
|
|
2900 ngx_hash_key_t *hk;
|
|
|
2901 ngx_hash_init_t hash;
|
|
|
2902 ngx_http_upstream_header_t *header;
|
|
|
2903 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
2904
|
|
|
2905 uscfp = umcf->upstreams.elts;
|
|
|
2906
|
|
|
2907 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2908 if (uscfp[i]->peers) {
|
|
|
2909 continue;
|
|
|
2910 }
|
|
|
2911
|
|
|
2912 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
212
|
2913 uscfp[i]->port);
|
|
200
|
2914 if (uscfp[i]->peers == NULL) {
|
|
|
2915 return NGX_CONF_ERROR;
|
|
|
2916 }
|
|
|
2917
|
|
|
2918 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
2919 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
2920 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
2921 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
2922 uscfp[i]->line);
|
|
|
2923 return NGX_CONF_ERROR;
|
|
|
2924 }
|
|
|
2925 }
|
|
198
|
2926
|
|
212
|
2927
|
|
198
|
2928 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2929 != NGX_OK)
|
|
58
|
2930 {
|
|
|
2931 return NGX_CONF_ERROR;
|
|
|
2932 }
|
|
|
2933
|
|
198
|
2934 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2935 hk = ngx_array_push(&headers_in);
|
|
|
2936 if (hk == NULL) {
|
|
|
2937 return NGX_CONF_ERROR;
|
|
|
2938 }
|
|
|
2939
|
|
|
2940 hk->key = header->name;
|
|
|
2941 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2942 hk->value = header;
|
|
|
2943 }
|
|
|
2944
|
|
|
2945 hash.hash = &umcf->headers_in_hash;
|
|
|
2946 hash.key = ngx_hash_key_lc;
|
|
|
2947 hash.max_size = 512;
|
|
244
|
2948 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
2949 hash.name = "upstream_headers_in_hash";
|
|
|
2950 hash.pool = cf->pool;
|
|
|
2951 hash.temp_pool = NULL;
|
|
|
2952
|
|
|
2953 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
2954 return NGX_CONF_ERROR;
|
|
|
2955 }
|
|
58
|
2956
|
|
|
2957 return NGX_CONF_OK;
|
|
|
2958 }
|
