|
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
|
|
464
|
12 #if (NGX_HTTP_CACHE)
|
|
|
13 static ngx_int_t ngx_http_upstream_cache(ngx_http_request_t *r,
|
|
|
14 ngx_http_upstream_t *u);
|
|
|
15 static ngx_int_t ngx_http_upstream_cache_send(ngx_http_request_t *r,
|
|
|
16 ngx_http_upstream_t *u);
|
|
|
17 #endif
|
|
|
18
|
|
348
|
19 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
|
|
58
|
20 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
|
|
|
21 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
|
|
|
22 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
23 ngx_event_t *ev);
|
|
28
|
24 static void ngx_http_upstream_connect(ngx_http_request_t *r,
|
|
36
|
25 ngx_http_upstream_t *u);
|
|
58
|
26 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
|
|
36
|
27 ngx_http_upstream_t *u);
|
|
28
|
28 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
|
|
36
|
29 ngx_http_upstream_t *u);
|
|
430
|
30 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
31 ngx_http_upstream_t *u);
|
|
|
32 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
|
|
|
33 ngx_http_upstream_t *u);
|
|
412
|
34 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
|
|
|
35 ngx_http_upstream_t *u);
|
|
|
36 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
37 ngx_http_upstream_t *u);
|
|
294
|
38 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
|
|
464
|
39 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
|
|
|
40 ngx_http_upstream_t *u);
|
|
430
|
41 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
42 ngx_http_upstream_t *u);
|
|
28
|
43 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
|
|
36
|
44 ngx_http_upstream_t *u);
|
|
130
|
45 static void
|
|
|
46 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
|
|
430
|
47 static void
|
|
|
48 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
49 ngx_http_upstream_t *u);
|
|
428
|
50 static void
|
|
|
51 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
52 ngx_uint_t do_write);
|
|
130
|
53 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
|
|
|
54 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
|
|
|
55 ssize_t bytes);
|
|
58
|
56 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
|
|
430
|
57 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
58 ngx_http_upstream_t *u);
|
|
428
|
59 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
|
|
318
|
60 static void ngx_http_upstream_store(ngx_http_request_t *r,
|
|
|
61 ngx_http_upstream_t *u);
|
|
430
|
62 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
|
|
|
63 ngx_http_upstream_t *u);
|
|
28
|
64 static void ngx_http_upstream_next(ngx_http_request_t *r,
|
|
36
|
65 ngx_http_upstream_t *u, ngx_uint_t ft_type);
|
|
118
|
66 static void ngx_http_upstream_cleanup(void *data);
|
|
28
|
67 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
36
|
68 ngx_http_upstream_t *u, ngx_int_t rc);
|
|
28
|
69
|
|
58
|
70 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
|
|
|
71 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
72 static ngx_int_t
|
|
|
73 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
74 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
75 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
|
|
|
76 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
76
|
77 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
|
|
|
78 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
79 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
|
|
58
|
80 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
206
|
81 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
|
|
|
82 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
198
|
83 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
|
|
58
|
84 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
85 static ngx_int_t
|
|
|
86 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
87 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
88 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
|
|
|
89 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
90 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
|
|
|
91 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
464
|
92 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
|
|
|
93 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
58
|
94 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
|
|
|
95 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
96 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
|
|
|
97 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
464
|
98 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
99 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
100
|
|
58
|
101 #if (NGX_HTTP_GZIP)
|
|
|
102 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
103 ngx_table_elt_t *h, ngx_uint_t offset);
|
|
|
104 #endif
|
|
|
105
|
|
122
|
106 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
|
|
298
|
107 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
108 ngx_http_variable_value_t *v, uintptr_t data);
|
|
122
|
109 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
110 ngx_http_variable_value_t *v, uintptr_t data);
|
|
|
111 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
112 ngx_http_variable_value_t *v, uintptr_t data);
|
|
430
|
113 static ngx_int_t ngx_http_upstream_response_length_variable(
|
|
|
114 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
|
|
122
|
115
|
|
200
|
116 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
|
|
|
117 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
118 void *conf);
|
|
|
119
|
|
58
|
120 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
|
|
200
|
121 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
|
|
58
|
122
|
|
126
|
123 #if (NGX_HTTP_SSL)
|
|
140
|
124 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
|
|
|
125 ngx_http_upstream_t *u, ngx_connection_t *c);
|
|
126
|
126 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
|
|
|
127 #endif
|
|
|
128
|
|
58
|
129
|
|
|
130 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
|
|
|
131
|
|
|
132 { ngx_string("Status"),
|
|
|
133 ngx_http_upstream_process_header_line,
|
|
|
134 offsetof(ngx_http_upstream_headers_in_t, status),
|
|
198
|
135 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
136
|
|
|
137 { ngx_string("Content-Type"),
|
|
|
138 ngx_http_upstream_process_header_line,
|
|
|
139 offsetof(ngx_http_upstream_headers_in_t, content_type),
|
|
222
|
140 ngx_http_upstream_copy_content_type, 0, 1 },
|
|
58
|
141
|
|
|
142 { ngx_string("Content-Length"),
|
|
|
143 ngx_http_upstream_process_header_line,
|
|
|
144 offsetof(ngx_http_upstream_headers_in_t, content_length),
|
|
64
|
145 ngx_http_upstream_copy_content_length, 0, 0 },
|
|
58
|
146
|
|
|
147 { ngx_string("Date"),
|
|
|
148 ngx_http_upstream_process_header_line,
|
|
|
149 offsetof(ngx_http_upstream_headers_in_t, date),
|
|
198
|
150 ngx_http_upstream_copy_header_line,
|
|
|
151 offsetof(ngx_http_headers_out_t, date), 0 },
|
|
58
|
152
|
|
318
|
153 { ngx_string("Last-Modified"),
|
|
|
154 ngx_http_upstream_process_header_line,
|
|
|
155 offsetof(ngx_http_upstream_headers_in_t, last_modified),
|
|
464
|
156 ngx_http_upstream_copy_last_modified, 0, 0 },
|
|
318
|
157
|
|
58
|
158 { ngx_string("Server"),
|
|
|
159 ngx_http_upstream_process_header_line,
|
|
|
160 offsetof(ngx_http_upstream_headers_in_t, server),
|
|
198
|
161 ngx_http_upstream_copy_header_line,
|
|
|
162 offsetof(ngx_http_headers_out_t, server), 0 },
|
|
58
|
163
|
|
78
|
164 { ngx_string("WWW-Authenticate"),
|
|
|
165 ngx_http_upstream_process_header_line,
|
|
|
166 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
|
|
|
167 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
|
168
|
|
58
|
169 { ngx_string("Location"),
|
|
392
|
170 ngx_http_upstream_process_header_line,
|
|
|
171 offsetof(ngx_http_upstream_headers_in_t, location),
|
|
64
|
172 ngx_http_upstream_rewrite_location, 0, 0 },
|
|
58
|
173
|
|
|
174 { ngx_string("Refresh"),
|
|
|
175 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
176 ngx_http_upstream_rewrite_refresh, 0, 0 },
|
|
|
177
|
|
|
178 { ngx_string("Set-Cookie"),
|
|
|
179 ngx_http_upstream_ignore_header_line, 0,
|
|
80
|
180 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
|
181
|
|
|
182 { ngx_string("Content-Disposition"),
|
|
|
183 ngx_http_upstream_ignore_header_line, 0,
|
|
|
184 ngx_http_upstream_copy_header_line, 0, 1 },
|
|
58
|
185
|
|
|
186 { ngx_string("Cache-Control"),
|
|
|
187 ngx_http_upstream_process_multi_header_lines,
|
|
|
188 offsetof(ngx_http_upstream_headers_in_t, cache_control),
|
|
|
189 ngx_http_upstream_copy_multi_header_lines,
|
|
64
|
190 offsetof(ngx_http_headers_out_t, cache_control), 1 },
|
|
58
|
191
|
|
122
|
192 { ngx_string("Expires"),
|
|
|
193 ngx_http_upstream_process_header_line,
|
|
|
194 offsetof(ngx_http_upstream_headers_in_t, expires),
|
|
|
195 ngx_http_upstream_copy_header_line,
|
|
|
196 offsetof(ngx_http_headers_out_t, expires), 1 },
|
|
|
197
|
|
126
|
198 { ngx_string("Accept-Ranges"),
|
|
|
199 ngx_http_upstream_process_header_line,
|
|
|
200 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
|
|
464
|
201 ngx_http_upstream_copy_allow_ranges,
|
|
126
|
202 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
|
|
|
203
|
|
58
|
204 { ngx_string("Connection"),
|
|
|
205 ngx_http_upstream_ignore_header_line, 0,
|
|
64
|
206 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
207
|
|
190
|
208 { ngx_string("Keep-Alive"),
|
|
|
209 ngx_http_upstream_ignore_header_line, 0,
|
|
|
210 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
211
|
|
58
|
212 { ngx_string("X-Powered-By"),
|
|
|
213 ngx_http_upstream_ignore_header_line, 0,
|
|
198
|
214 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
58
|
215
|
|
|
216 { ngx_string("X-Accel-Expires"),
|
|
|
217 ngx_http_upstream_process_header_line,
|
|
|
218 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
|
|
198
|
219 ngx_http_upstream_copy_header_line, 0, 0 },
|
|
64
|
220
|
|
|
221 { ngx_string("X-Accel-Redirect"),
|
|
|
222 ngx_http_upstream_process_header_line,
|
|
|
223 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
|
|
|
224 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
58
|
225
|
|
76
|
226 { ngx_string("X-Accel-Limit-Rate"),
|
|
|
227 ngx_http_upstream_process_limit_rate, 0,
|
|
|
228 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
229
|
|
198
|
230 { ngx_string("X-Accel-Buffering"),
|
|
|
231 ngx_http_upstream_process_buffering, 0,
|
|
|
232 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
233
|
|
206
|
234 { ngx_string("X-Accel-Charset"),
|
|
|
235 ngx_http_upstream_process_charset, 0,
|
|
|
236 ngx_http_upstream_ignore_header_line, 0, 0 },
|
|
|
237
|
|
58
|
238 #if (NGX_HTTP_GZIP)
|
|
|
239 { ngx_string("Content-Encoding"),
|
|
|
240 ngx_http_upstream_process_header_line,
|
|
|
241 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
|
|
64
|
242 ngx_http_upstream_copy_content_encoding, 0, 0 },
|
|
58
|
243 #endif
|
|
|
244
|
|
64
|
245 { ngx_null_string, NULL, 0, NULL, 0, 0 }
|
|
58
|
246 };
|
|
28
|
247
|
|
|
248
|
|
200
|
249 static ngx_command_t ngx_http_upstream_commands[] = {
|
|
|
250
|
|
|
251 { ngx_string("upstream"),
|
|
|
252 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
|
|
|
253 ngx_http_upstream,
|
|
|
254 0,
|
|
|
255 0,
|
|
|
256 NULL },
|
|
|
257
|
|
|
258 { ngx_string("server"),
|
|
260
|
259 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
|
|
200
|
260 ngx_http_upstream_server,
|
|
|
261 NGX_HTTP_SRV_CONF_OFFSET,
|
|
|
262 0,
|
|
|
263 NULL },
|
|
|
264
|
|
|
265 ngx_null_command
|
|
|
266 };
|
|
|
267
|
|
|
268
|
|
|
269 static ngx_http_module_t ngx_http_upstream_module_ctx = {
|
|
122
|
270 ngx_http_upstream_add_variables, /* preconfiguration */
|
|
58
|
271 NULL, /* postconfiguration */
|
|
|
272
|
|
|
273 ngx_http_upstream_create_main_conf, /* create main configuration */
|
|
200
|
274 ngx_http_upstream_init_main_conf, /* init main configuration */
|
|
28
|
275
|
|
|
276 NULL, /* create server configuration */
|
|
|
277 NULL, /* merge server configuration */
|
|
|
278
|
|
|
279 NULL, /* create location configuration */
|
|
|
280 NULL /* merge location configuration */
|
|
|
281 };
|
|
126
|
282
|
|
28
|
283
|
|
|
284 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
285 NGX_MODULE_V1,
|
|
28
|
286 &ngx_http_upstream_module_ctx, /* module context */
|
|
200
|
287 ngx_http_upstream_commands, /* module directives */
|
|
28
|
288 NGX_HTTP_MODULE, /* module type */
|
|
90
|
289 NULL, /* init master */
|
|
28
|
290 NULL, /* init module */
|
|
90
|
291 NULL, /* init process */
|
|
|
292 NULL, /* init thread */
|
|
|
293 NULL, /* exit thread */
|
|
|
294 NULL, /* exit process */
|
|
|
295 NULL, /* exit master */
|
|
|
296 NGX_MODULE_V1_PADDING
|
|
28
|
297 };
|
|
|
298
|
|
|
299
|
|
122
|
300 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
301
|
|
298
|
302 { ngx_string("upstream_addr"), NULL,
|
|
426
|
303 ngx_http_upstream_addr_variable, 0,
|
|
|
304 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
298
|
305
|
|
186
|
306 { ngx_string("upstream_status"), NULL,
|
|
426
|
307 ngx_http_upstream_status_variable, 0,
|
|
|
308 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
309
|
|
186
|
310 { ngx_string("upstream_response_time"), NULL,
|
|
426
|
311 ngx_http_upstream_response_time_variable, 0,
|
|
|
312 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
313
|
|
430
|
314 { ngx_string("upstream_response_length"), NULL,
|
|
|
315 ngx_http_upstream_response_length_variable, 0,
|
|
|
316 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
317
|
|
186
|
318 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
319 };
|
|
|
320
|
|
|
321
|
|
412
|
322 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
323 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
324 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
325 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
326 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
327 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
328 { 0, 0 }
|
|
|
329 };
|
|
|
330
|
|
36
|
331 void
|
|
|
332 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
333 {
|
|
348
|
334 ngx_str_t *host;
|
|
|
335 ngx_uint_t i;
|
|
|
336 ngx_connection_t *c;
|
|
|
337 ngx_resolver_ctx_t *ctx, temp;
|
|
|
338 ngx_http_cleanup_t *cln;
|
|
|
339 ngx_http_upstream_t *u;
|
|
|
340 ngx_http_core_loc_conf_t *clcf;
|
|
|
341 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
342 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
343
|
|
|
344 c = r->connection;
|
|
|
345
|
|
|
346 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
347 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
348
|
|
|
349 if (c->read->timer_set) {
|
|
|
350 ngx_del_timer(c->read);
|
|
|
351 }
|
|
|
352
|
|
178
|
353 u = r->upstream;
|
|
|
354
|
|
|
355 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
356 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
357 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
358 }
|
|
126
|
359
|
|
28
|
360 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
361
|
|
|
362 if (!c->write->active) {
|
|
80
|
363 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
364 == NGX_ERROR)
|
|
28
|
365 {
|
|
|
366 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
367 return;
|
|
|
368 }
|
|
|
369 }
|
|
|
370 }
|
|
|
371
|
|
86
|
372 if (r->request_body) {
|
|
|
373 u->request_bufs = r->request_body->bufs;
|
|
|
374 }
|
|
58
|
375
|
|
464
|
376 #if (NGX_HTTP_CACHE)
|
|
|
377
|
|
|
378 if (u->conf->cache) {
|
|
|
379 ngx_int_t rc;
|
|
|
380
|
|
|
381 rc = ngx_http_upstream_cache(r, u);
|
|
|
382
|
|
|
383 if (rc == NGX_DONE) {
|
|
|
384 return;
|
|
|
385 }
|
|
|
386
|
|
|
387 if (rc != NGX_DECLINED) {
|
|
|
388 ngx_http_finalize_request(r, rc);
|
|
|
389 return;
|
|
|
390 }
|
|
|
391 }
|
|
|
392
|
|
|
393 #endif
|
|
|
394
|
|
86
|
395 if (u->create_request(r) != NGX_OK) {
|
|
28
|
396 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
397 return;
|
|
|
398 }
|
|
|
399
|
|
58
|
400 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
401
|
|
|
402 u->output.pool = r->pool;
|
|
|
403 u->output.bufs.num = 1;
|
|
58
|
404 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
405 u->output.output_filter = ngx_chain_writer;
|
|
|
406 u->output.filter_ctx = &u->writer;
|
|
|
407
|
|
|
408 u->writer.pool = r->pool;
|
|
|
409
|
|
296
|
410 if (r->upstream_states == NULL) {
|
|
|
411
|
|
|
412 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
413 sizeof(ngx_http_upstream_state_t));
|
|
|
414 if (r->upstream_states == NULL) {
|
|
|
415 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
|
419 } else {
|
|
|
420
|
|
|
421 u->state = ngx_array_push(r->upstream_states);
|
|
|
422 if (u->state == NULL) {
|
|
|
423 ngx_http_upstream_finalize_request(r, u,
|
|
|
424 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
425 return;
|
|
|
426 }
|
|
|
427
|
|
|
428 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
429 }
|
|
|
430
|
|
142
|
431 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
432 if (cln == NULL) {
|
|
|
433 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
434 return;
|
|
|
435 }
|
|
|
436
|
|
|
437 cln->handler = ngx_http_upstream_cleanup;
|
|
|
438 cln->data = r;
|
|
|
439 u->cleanup = &cln->handler;
|
|
|
440
|
|
320
|
441 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
442
|
|
348
|
443 if (u->resolved == NULL) {
|
|
|
444
|
|
|
445 uscf = u->conf->upstream;
|
|
|
446
|
|
|
447 } else {
|
|
|
448
|
|
434
|
449 if (u->resolved->sockaddr) {
|
|
|
450
|
|
|
451 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
452 != NGX_OK)
|
|
|
453 {
|
|
|
454 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
455 return;
|
|
|
456 }
|
|
|
457
|
|
|
458 ngx_http_upstream_connect(r, u);
|
|
|
459
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
356
|
463 host = &u->resolved->host;
|
|
348
|
464
|
|
|
465 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
466
|
|
|
467 uscfp = umcf->upstreams.elts;
|
|
|
468
|
|
|
469 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
470
|
|
|
471 uscf = uscfp[i];
|
|
|
472
|
|
|
473 if (uscf->host.len == host->len
|
|
416
|
474 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
475 || uscf->port == u->resolved->port)
|
|
348
|
476 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
477 {
|
|
|
478 goto found;
|
|
|
479 }
|
|
|
480 }
|
|
|
481
|
|
|
482 temp.name = *host;
|
|
|
483
|
|
|
484 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
485 if (ctx == NULL) {
|
|
|
486 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
487 return;
|
|
|
488 }
|
|
|
489
|
|
354
|
490 if (ctx == NGX_NO_RESOLVER) {
|
|
|
491 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
492 "no resolver defined to resolve %V", host);
|
|
|
493
|
|
|
494 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
348
|
498 ctx->name = *host;
|
|
|
499 ctx->type = NGX_RESOLVE_A;
|
|
|
500 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
501 ctx->data = r;
|
|
|
502 ctx->timeout = clcf->resolver_timeout;
|
|
|
503
|
|
372
|
504 u->resolved->ctx = ctx;
|
|
|
505
|
|
348
|
506 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
507 u->resolved->ctx = NULL;
|
|
348
|
508 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
509 return;
|
|
|
510 }
|
|
|
511
|
|
|
512 return;
|
|
|
513 }
|
|
|
514
|
|
|
515 found:
|
|
|
516
|
|
|
517 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
518 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
519 return;
|
|
|
520 }
|
|
|
521
|
|
28
|
522 ngx_http_upstream_connect(r, u);
|
|
|
523 }
|
|
|
524
|
|
|
525
|
|
464
|
526 #if (NGX_HTTP_CACHE)
|
|
|
527
|
|
|
528 static ngx_int_t
|
|
|
529 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
530 {
|
|
|
531 ngx_int_t rc;
|
|
|
532 ngx_http_cache_t *c;
|
|
|
533
|
|
|
534 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
|
|
|
535 if (c == NULL) {
|
|
|
536 return NGX_ERROR;
|
|
|
537 }
|
|
|
538
|
|
|
539 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
|
|
|
540 return NGX_ERROR;
|
|
|
541 }
|
|
|
542
|
|
|
543 r->cache = c;
|
|
|
544 c->file.log = r->connection->log;
|
|
|
545
|
|
|
546 if (u->create_key(r) != NGX_OK) {
|
|
|
547 return NGX_ERROR;
|
|
|
548 }
|
|
|
549
|
|
|
550 /* TODO: add keys */
|
|
|
551
|
|
|
552 ngx_http_file_cache_create_key(r);
|
|
|
553
|
|
|
554 u->cacheable = 1;
|
|
|
555
|
|
|
556 c->min_uses = r->upstream->conf->cache_min_uses;
|
|
|
557 c->body_start = r->upstream->conf->buffer_size;
|
|
|
558 c->file_cache = u->conf->cache->data;
|
|
|
559
|
|
|
560 rc = ngx_http_file_cache_open(r);
|
|
|
561
|
|
|
562 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
563 "http upstream cache: %i u:%ui", rc, c->uses);
|
|
|
564
|
|
|
565 if (rc == NGX_OK) {
|
|
|
566
|
|
|
567 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
568
|
|
|
569 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
570 return rc;
|
|
|
571 }
|
|
|
572
|
|
|
573 } else if (rc == NGX_ERROR) {
|
|
|
574
|
|
|
575 return NGX_ERROR;
|
|
|
576
|
|
|
577 } else if (rc == NGX_HTTP_CACHE_STALE) {
|
|
|
578
|
|
|
579 u->stale_cache = 1;
|
|
|
580 u->buffer.start = NULL;
|
|
|
581
|
|
|
582 } else if (rc == NGX_DECLINED) {
|
|
|
583
|
|
|
584 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
|
585 u->buffer.start = NULL;
|
|
|
586
|
|
|
587 } else {
|
|
|
588 u->buffer.pos = u->buffer.start + c->header_start;
|
|
|
589 u->buffer.last = u->buffer.pos;
|
|
|
590 }
|
|
|
591
|
|
|
592 } else if (rc == NGX_AGAIN) {
|
|
|
593
|
|
|
594 u->cacheable = 0;
|
|
|
595
|
|
|
596 } else {
|
|
|
597
|
|
|
598 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
|
599
|
|
|
600 return rc;
|
|
|
601 }
|
|
|
602
|
|
|
603 r->cached = 0;
|
|
|
604
|
|
|
605 return NGX_DECLINED;
|
|
|
606 }
|
|
|
607
|
|
|
608
|
|
|
609 static ngx_int_t
|
|
|
610 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
611 {
|
|
|
612 ngx_int_t rc;
|
|
|
613 ngx_http_cache_t *c;
|
|
|
614
|
|
|
615 c = r->cache;
|
|
|
616
|
|
|
617 /* TODO: cache stack */
|
|
|
618
|
|
|
619 u->buffer = *c->buf;
|
|
|
620 u->buffer.pos += c->header_start;
|
|
|
621
|
|
|
622 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
623
|
|
|
624 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
|
625 sizeof(ngx_table_elt_t))
|
|
|
626 != NGX_OK)
|
|
|
627 {
|
|
|
628 return NGX_ERROR;
|
|
|
629 }
|
|
|
630
|
|
|
631 rc = u->process_header(r);
|
|
|
632
|
|
|
633 if (rc == NGX_OK) {
|
|
|
634
|
|
|
635 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
|
636 return NGX_DONE;
|
|
|
637 }
|
|
|
638
|
|
|
639 return ngx_http_cache_send(r);
|
|
|
640 }
|
|
|
641
|
|
|
642 if (rc == NGX_ERROR) {
|
|
|
643 return NGX_ERROR;
|
|
|
644 }
|
|
|
645
|
|
|
646 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
|
647
|
|
|
648 /* TODO: delete file */
|
|
|
649
|
|
|
650 return rc;
|
|
|
651 }
|
|
|
652
|
|
|
653 #endif
|
|
|
654
|
|
|
655
|
|
36
|
656 static void
|
|
348
|
657 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
658 {
|
|
|
659 ngx_http_request_t *r;
|
|
|
660 ngx_http_upstream_resolved_t *ur;
|
|
|
661
|
|
|
662 r = ctx->data;
|
|
|
663
|
|
|
664 r->upstream->resolved->ctx = NULL;
|
|
|
665
|
|
|
666 if (ctx->state) {
|
|
|
667 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
668 "%V could not be resolved (%i: %s)",
|
|
|
669 &ctx->name, ctx->state,
|
|
|
670 ngx_resolver_strerror(ctx->state));
|
|
|
671
|
|
|
672 ngx_resolve_name_done(ctx);
|
|
|
673 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
674 return;
|
|
|
675 }
|
|
|
676
|
|
|
677 ur = r->upstream->resolved;
|
|
|
678 ur->naddrs = ctx->naddrs;
|
|
|
679 ur->addrs = ctx->addrs;
|
|
|
680
|
|
|
681 #if (NGX_DEBUG)
|
|
|
682 {
|
|
|
683 in_addr_t addr;
|
|
|
684 ngx_uint_t i;
|
|
|
685
|
|
|
686 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
687 addr = ntohl(ur->addrs[i]);
|
|
|
688
|
|
|
689 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
690 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
691 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
692 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
693 }
|
|
|
694 }
|
|
|
695 #endif
|
|
|
696
|
|
|
697 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
698 ngx_resolve_name_done(ctx);
|
|
|
699 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
700 return;
|
|
|
701 }
|
|
|
702
|
|
|
703 ngx_resolve_name_done(ctx);
|
|
|
704
|
|
|
705 ngx_http_upstream_connect(r, r->upstream);
|
|
|
706 }
|
|
|
707
|
|
|
708
|
|
|
709 static void
|
|
426
|
710 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
711 {
|
|
|
712 ngx_connection_t *c;
|
|
|
713 ngx_http_request_t *r;
|
|
|
714 ngx_http_log_ctx_t *ctx;
|
|
|
715 ngx_http_upstream_t *u;
|
|
|
716
|
|
|
717 c = ev->data;
|
|
|
718 r = c->data;
|
|
|
719
|
|
|
720 u = r->upstream;
|
|
|
721 c = r->connection;
|
|
|
722
|
|
|
723 ctx = c->log->data;
|
|
|
724 ctx->current_request = r;
|
|
|
725
|
|
|
726 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
727 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
728
|
|
|
729 if (ev->write) {
|
|
430
|
730 u->write_event_handler(r, u);
|
|
426
|
731
|
|
|
732 } else {
|
|
430
|
733 u->read_event_handler(r, u);
|
|
426
|
734 }
|
|
|
735
|
|
|
736 ngx_http_run_posted_requests(c);
|
|
|
737 }
|
|
|
738
|
|
|
739
|
|
|
740 static void
|
|
58
|
741 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
742 {
|
|
|
743 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
744 }
|
|
|
745
|
|
|
746
|
|
|
747 static void
|
|
|
748 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
749 {
|
|
|
750 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
751 }
|
|
|
752
|
|
|
753
|
|
|
754 static void
|
|
|
755 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
756 ngx_event_t *ev)
|
|
28
|
757 {
|
|
|
758 int n;
|
|
|
759 char buf[1];
|
|
126
|
760 ngx_err_t err;
|
|
28
|
761 ngx_connection_t *c;
|
|
|
762 ngx_http_upstream_t *u;
|
|
|
763
|
|
76
|
764 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
765 "http upstream check client, write event:%d, \"%V\"",
|
|
|
766 ev->write, &r->uri);
|
|
28
|
767
|
|
58
|
768 c = r->connection;
|
|
32
|
769 u = r->upstream;
|
|
|
770
|
|
132
|
771 if (c->error) {
|
|
76
|
772 ngx_http_upstream_finalize_request(r, u,
|
|
|
773 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
774 return;
|
|
|
775 }
|
|
|
776
|
|
32
|
777 if (u->peer.connection == NULL) {
|
|
|
778 return;
|
|
|
779 }
|
|
|
780
|
|
28
|
781 #if (NGX_HAVE_KQUEUE)
|
|
|
782
|
|
|
783 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
784
|
|
|
785 if (!ev->pending_eof) {
|
|
|
786 return;
|
|
|
787 }
|
|
|
788
|
|
|
789 ev->eof = 1;
|
|
132
|
790 c->error = 1;
|
|
28
|
791
|
|
|
792 if (ev->kq_errno) {
|
|
|
793 ev->error = 1;
|
|
|
794 }
|
|
|
795
|
|
340
|
796 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
797 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
798 "kevent() reported that client closed prematurely "
|
|
|
799 "connection, so upstream connection is closed too");
|
|
28
|
800 ngx_http_upstream_finalize_request(r, u,
|
|
|
801 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
802 return;
|
|
|
803 }
|
|
|
804
|
|
|
805 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
806 "kevent() reported that client closed "
|
|
|
807 "prematurely connection");
|
|
|
808
|
|
|
809 if (u->peer.connection == NULL) {
|
|
|
810 ngx_http_upstream_finalize_request(r, u,
|
|
|
811 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
812 return;
|
|
|
813 }
|
|
|
814
|
|
|
815 return;
|
|
|
816 }
|
|
|
817
|
|
|
818 #endif
|
|
|
819
|
|
|
820 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
821
|
|
|
822 err = ngx_socket_errno;
|
|
|
823
|
|
286
|
824 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
825 "http upstream recv(): %d", n);
|
|
|
826
|
|
28
|
827 /*
|
|
|
828 * we do not need to disable the write event because
|
|
|
829 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
830 */
|
|
|
831
|
|
|
832 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
833 return;
|
|
|
834 }
|
|
|
835
|
|
|
836 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
837 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
838 ngx_http_upstream_finalize_request(r, u,
|
|
|
839 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
840 return;
|
|
|
841 }
|
|
|
842 }
|
|
|
843
|
|
|
844 if (n > 0) {
|
|
|
845 return;
|
|
|
846 }
|
|
|
847
|
|
|
848 if (n == -1) {
|
|
|
849 if (err == NGX_EAGAIN) {
|
|
|
850 return;
|
|
|
851 }
|
|
|
852
|
|
|
853 ev->error = 1;
|
|
|
854
|
|
32
|
855 } else { /* n == 0 */
|
|
28
|
856 err = 0;
|
|
|
857 }
|
|
|
858
|
|
78
|
859 ev->eof = 1;
|
|
132
|
860 c->error = 1;
|
|
78
|
861
|
|
340
|
862 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
863 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
864 "client closed prematurely connection, "
|
|
|
865 "so upstream connection is closed too");
|
|
|
866 ngx_http_upstream_finalize_request(r, u,
|
|
|
867 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
868 return;
|
|
|
869 }
|
|
|
870
|
|
|
871 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
872 "client closed prematurely connection");
|
|
|
873
|
|
|
874 if (u->peer.connection == NULL) {
|
|
|
875 ngx_http_upstream_finalize_request(r, u,
|
|
|
876 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
877 return;
|
|
|
878 }
|
|
|
879 }
|
|
|
880
|
|
|
881
|
|
36
|
882 static void
|
|
|
883 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
884 {
|
|
140
|
885 ngx_int_t rc;
|
|
214
|
886 ngx_time_t *tp;
|
|
140
|
887 ngx_connection_t *c;
|
|
28
|
888
|
|
32
|
889 r->connection->log->action = "connecting to upstream";
|
|
28
|
890
|
|
|
891 r->connection->single_connection = 0;
|
|
|
892
|
|
262
|
893 if (u->state && u->state->response_sec) {
|
|
214
|
894 tp = ngx_timeofday();
|
|
262
|
895 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
896 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
897 }
|
|
|
898
|
|
296
|
899 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
900 if (u->state == NULL) {
|
|
|
901 ngx_http_upstream_finalize_request(r, u,
|
|
|
902 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
903 return;
|
|
|
904 }
|
|
|
905
|
|
|
906 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
907
|
|
|
908 tp = ngx_timeofday();
|
|
262
|
909 u->state->response_sec = tp->sec;
|
|
|
910 u->state->response_msec = tp->msec;
|
|
214
|
911
|
|
28
|
912 rc = ngx_event_connect_peer(&u->peer);
|
|
|
913
|
|
|
914 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
915 "http upstream connect: %i", rc);
|
|
|
916
|
|
|
917 if (rc == NGX_ERROR) {
|
|
|
918 ngx_http_upstream_finalize_request(r, u,
|
|
|
919 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
920 return;
|
|
|
921 }
|
|
|
922
|
|
356
|
923 u->state->peer = u->peer.name;
|
|
|
924
|
|
92
|
925 if (rc == NGX_BUSY) {
|
|
|
926 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
927 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
928 return;
|
|
92
|
929 }
|
|
|
930
|
|
326
|
931 if (rc == NGX_DECLINED) {
|
|
28
|
932 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
933 return;
|
|
|
934 }
|
|
|
935
|
|
126
|
936 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
937
|
|
28
|
938 c = u->peer.connection;
|
|
|
939
|
|
|
940 c->data = r;
|
|
140
|
941
|
|
426
|
942 c->write->handler = ngx_http_upstream_handler;
|
|
|
943 c->read->handler = ngx_http_upstream_handler;
|
|
|
944
|
|
|
945 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
946 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
947
|
|
326
|
948 c->sendfile &= r->connection->sendfile;
|
|
372
|
949 u->output.sendfile = c->sendfile;
|
|
28
|
950
|
|
|
951 c->pool = r->pool;
|
|
|
952 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
953
|
|
|
954 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
955
|
|
|
956 u->writer.out = NULL;
|
|
|
957 u->writer.last = &u->writer.out;
|
|
|
958 u->writer.connection = c;
|
|
|
959 u->writer.limit = 0;
|
|
|
960
|
|
|
961 if (u->request_sent) {
|
|
58
|
962 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
963 ngx_http_upstream_finalize_request(r, u,
|
|
|
964 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
965 return;
|
|
|
966 }
|
|
28
|
967 }
|
|
|
968
|
|
276
|
969 if (r->request_body
|
|
|
970 && r->request_body->buf
|
|
|
971 && r->request_body->temp_file
|
|
|
972 && r == r->main)
|
|
|
973 {
|
|
122
|
974 /*
|
|
|
975 * the r->request_body->buf can be reused for one request only,
|
|
|
976 * the subrequests should allocate their own temporay bufs
|
|
|
977 */
|
|
|
978
|
|
|
979 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
980 if (u->output.free == NULL) {
|
|
|
981 ngx_http_upstream_finalize_request(r, u,
|
|
|
982 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
983 return;
|
|
28
|
984 }
|
|
122
|
985
|
|
|
986 u->output.free->buf = r->request_body->buf;
|
|
|
987 u->output.free->next = NULL;
|
|
|
988 u->output.allocated = 1;
|
|
|
989
|
|
|
990 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
991 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
992 r->request_body->buf->tag = u->output.tag;
|
|
28
|
993 }
|
|
|
994
|
|
|
995 u->request_sent = 0;
|
|
|
996
|
|
|
997 if (rc == NGX_AGAIN) {
|
|
|
998 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
999 return;
|
|
|
1000 }
|
|
|
1001
|
|
126
|
1002 #if (NGX_HTTP_SSL)
|
|
|
1003
|
|
348
|
1004 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1005 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 #endif
|
|
|
1010
|
|
28
|
1011 ngx_http_upstream_send_request(r, u);
|
|
|
1012 }
|
|
|
1013
|
|
|
1014
|
|
126
|
1015 #if (NGX_HTTP_SSL)
|
|
|
1016
|
|
|
1017 static void
|
|
140
|
1018 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
1019 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
1020 {
|
|
260
|
1021 ngx_int_t rc;
|
|
140
|
1022
|
|
|
1023 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
1024 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
454
|
1025 != NGX_OK)
|
|
140
|
1026 {
|
|
|
1027 ngx_http_upstream_finalize_request(r, u,
|
|
|
1028 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1029 return;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 c->sendfile = 0;
|
|
168
|
1033 u->output.sendfile = 0;
|
|
140
|
1034
|
|
398
|
1035 if (u->conf->ssl_session_reuse) {
|
|
|
1036 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
1037 ngx_http_upstream_finalize_request(r, u,
|
|
|
1038 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1039 return;
|
|
|
1040 }
|
|
140
|
1041 }
|
|
|
1042
|
|
190
|
1043 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
1044
|
|
140
|
1045 rc = ngx_ssl_handshake(c);
|
|
|
1046
|
|
|
1047 if (rc == NGX_AGAIN) {
|
|
|
1048 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
1049 return;
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 ngx_http_upstream_ssl_handshake(c);
|
|
|
1053 }
|
|
|
1054
|
|
|
1055
|
|
|
1056 static void
|
|
126
|
1057 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
1058 {
|
|
|
1059 ngx_http_request_t *r;
|
|
|
1060 ngx_http_upstream_t *u;
|
|
|
1061
|
|
|
1062 r = c->data;
|
|
|
1063 u = r->upstream;
|
|
|
1064
|
|
|
1065 if (c->ssl->handshaked) {
|
|
|
1066
|
|
398
|
1067 if (u->conf->ssl_session_reuse) {
|
|
|
1068 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
1069 }
|
|
260
|
1070
|
|
426
|
1071 c->write->handler = ngx_http_upstream_handler;
|
|
|
1072 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
1073
|
|
|
1074 ngx_http_upstream_send_request(r, u);
|
|
|
1075
|
|
|
1076 return;
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1080
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 #endif
|
|
|
1084
|
|
|
1085
|
|
58
|
1086 static ngx_int_t
|
|
36
|
1087 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1088 {
|
|
|
1089 ngx_chain_t *cl;
|
|
|
1090
|
|
58
|
1091 if (u->reinit_request(r) != NGX_OK) {
|
|
|
1092 return NGX_ERROR;
|
|
|
1093 }
|
|
|
1094
|
|
356
|
1095 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
1096
|
|
|
1097 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
1098 sizeof(ngx_table_elt_t))
|
|
|
1099 != NGX_OK)
|
|
58
|
1100 {
|
|
|
1101 return NGX_ERROR;
|
|
28
|
1102 }
|
|
|
1103
|
|
|
1104 /* reinit the request chain */
|
|
126
|
1105
|
|
58
|
1106 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
1107 cl->buf->pos = cl->buf->start;
|
|
|
1108 cl->buf->file_pos = 0;
|
|
|
1109 }
|
|
|
1110
|
|
58
|
1111 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
1112
|
|
122
|
1113 if (r->request_body && r->request_body->temp_file
|
|
146
|
1114 && r != r->main && u->output.buf)
|
|
122
|
1115 {
|
|
|
1116 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1117 if (u->output.free == NULL) {
|
|
|
1118 return NGX_ERROR;
|
|
58
|
1119 }
|
|
122
|
1120
|
|
|
1121 u->output.free->buf = u->output.buf;
|
|
|
1122 u->output.free->next = NULL;
|
|
|
1123
|
|
|
1124 u->output.buf->pos = u->output.buf->start;
|
|
|
1125 u->output.buf->last = u->output.buf->start;
|
|
58
|
1126 }
|
|
28
|
1127
|
|
|
1128 u->output.buf = NULL;
|
|
|
1129 u->output.in = NULL;
|
|
|
1130 u->output.busy = NULL;
|
|
126
|
1131
|
|
130
|
1132 /* reinit u->buffer */
|
|
126
|
1133
|
|
464
|
1134 u->buffer.pos = u->buffer.start;
|
|
|
1135
|
|
|
1136 #if (NGX_HTTP_CACHE)
|
|
|
1137
|
|
|
1138 if (r->cache) {
|
|
|
1139 u->buffer.pos += r->cache->header_start;
|
|
28
|
1140 }
|
|
58
|
1141
|
|
28
|
1142 #endif
|
|
|
1143
|
|
464
|
1144 u->buffer.last = u->buffer.pos;
|
|
|
1145
|
|
58
|
1146 return NGX_OK;
|
|
28
|
1147 }
|
|
|
1148
|
|
|
1149
|
|
36
|
1150 static void
|
|
|
1151 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1152 {
|
|
294
|
1153 ngx_int_t rc;
|
|
32
|
1154 ngx_connection_t *c;
|
|
126
|
1155
|
|
28
|
1156 c = u->peer.connection;
|
|
|
1157
|
|
|
1158 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1159 "http upstream send request");
|
|
|
1160
|
|
294
|
1161 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1162 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1163 return;
|
|
28
|
1164 }
|
|
|
1165
|
|
32
|
1166 c->log->action = "sending request to upstream";
|
|
28
|
1167
|
|
58
|
1168 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1169
|
|
|
1170 u->request_sent = 1;
|
|
|
1171
|
|
|
1172 if (rc == NGX_ERROR) {
|
|
|
1173 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1174 return;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 if (c->write->timer_set) {
|
|
|
1178 ngx_del_timer(c->write);
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 if (rc == NGX_AGAIN) {
|
|
|
1182 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1183
|
|
430
|
1184 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1185 ngx_http_upstream_finalize_request(r, u,
|
|
|
1186 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1187 return;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 return;
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 /* rc == NGX_OK */
|
|
|
1194
|
|
|
1195 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1196 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1197 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1198 ngx_tcp_push_n " failed");
|
|
|
1199 ngx_http_upstream_finalize_request(r, u,
|
|
|
1200 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1201 return;
|
|
28
|
1202 }
|
|
|
1203
|
|
|
1204 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1205 }
|
|
126
|
1206
|
|
28
|
1207 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1208
|
|
|
1209 #if 1
|
|
|
1210 if (c->read->ready) {
|
|
126
|
1211
|
|
28
|
1212 /* post aio operation */
|
|
|
1213
|
|
|
1214 /*
|
|
|
1215 * TODO comment
|
|
|
1216 * although we can post aio operation just in the end
|
|
|
1217 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1218 * it's better to do here because we postpone header buffer allocation
|
|
|
1219 */
|
|
|
1220
|
|
430
|
1221 ngx_http_upstream_process_header(r, u);
|
|
28
|
1222 return;
|
|
|
1223 }
|
|
|
1224 #endif
|
|
|
1225
|
|
426
|
1226 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1227
|
|
430
|
1228 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1229 ngx_http_upstream_finalize_request(r, u,
|
|
|
1230 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1231 return;
|
|
|
1232 }
|
|
|
1233 }
|
|
|
1234
|
|
|
1235
|
|
36
|
1236 static void
|
|
430
|
1237 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1238 ngx_http_upstream_t *u)
|
|
28
|
1239 {
|
|
430
|
1240 ngx_connection_t *c;
|
|
|
1241
|
|
|
1242 c = u->peer.connection;
|
|
|
1243
|
|
|
1244 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1245 "http upstream send request handler");
|
|
|
1246
|
|
430
|
1247 if (c->write->timedout) {
|
|
28
|
1248 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1249 return;
|
|
|
1250 }
|
|
|
1251
|
|
140
|
1252 #if (NGX_HTTP_SSL)
|
|
|
1253
|
|
348
|
1254 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1255 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1256 return;
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 #endif
|
|
|
1260
|
|
200
|
1261 if (u->header_sent) {
|
|
426
|
1262 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1263
|
|
430
|
1264 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1265
|
|
|
1266 return;
|
|
|
1267 }
|
|
|
1268
|
|
28
|
1269 ngx_http_upstream_send_request(r, u);
|
|
|
1270 }
|
|
|
1271
|
|
|
1272
|
|
36
|
1273 static void
|
|
430
|
1274 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1275 {
|
|
464
|
1276 ssize_t n;
|
|
|
1277 ngx_int_t rc;
|
|
|
1278 ngx_connection_t *c;
|
|
28
|
1279
|
|
430
|
1280 c = u->peer.connection;
|
|
|
1281
|
|
|
1282 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1283 "http upstream process header");
|
|
28
|
1284
|
|
32
|
1285 c->log->action = "reading response header from upstream";
|
|
28
|
1286
|
|
430
|
1287 if (c->read->timedout) {
|
|
28
|
1288 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1289 return;
|
|
|
1290 }
|
|
126
|
1291
|
|
294
|
1292 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1293 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1294 return;
|
|
|
1295 }
|
|
|
1296
|
|
130
|
1297 if (u->buffer.start == NULL) {
|
|
|
1298 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1299 if (u->buffer.start == NULL) {
|
|
28
|
1300 ngx_http_upstream_finalize_request(r, u,
|
|
|
1301 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1302 return;
|
|
|
1303 }
|
|
|
1304
|
|
130
|
1305 u->buffer.pos = u->buffer.start;
|
|
|
1306 u->buffer.last = u->buffer.start;
|
|
|
1307 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1308 u->buffer.temporary = 1;
|
|
|
1309
|
|
|
1310 u->buffer.tag = u->output.tag;
|
|
28
|
1311
|
|
356
|
1312 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1313 sizeof(ngx_table_elt_t))
|
|
|
1314 != NGX_OK)
|
|
58
|
1315 {
|
|
|
1316 ngx_http_upstream_finalize_request(r, u,
|
|
|
1317 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1318 return;
|
|
|
1319 }
|
|
|
1320
|
|
464
|
1321 #if (NGX_HTTP_CACHE)
|
|
|
1322
|
|
|
1323 if (r->cache) {
|
|
|
1324 u->buffer.pos += r->cache->header_start;
|
|
130
|
1325 u->buffer.last = u->buffer.pos;
|
|
28
|
1326 }
|
|
|
1327 #endif
|
|
|
1328 }
|
|
|
1329
|
|
424
|
1330 for ( ;; ) {
|
|
|
1331
|
|
|
1332 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1333
|
|
|
1334 if (n == NGX_AGAIN) {
|
|
28
|
1335 #if 0
|
|
424
|
1336 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1337 #endif
|
|
|
1338
|
|
430
|
1339 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
424
|
1340 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1341 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1342 return;
|
|
|
1343 }
|
|
|
1344
|
|
|
1345 return;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 if (n == 0) {
|
|
430
|
1349 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1350 "upstream prematurely closed connection");
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 if (n == NGX_ERROR || n == 0) {
|
|
|
1354 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1355 return;
|
|
|
1356 }
|
|
|
1357
|
|
424
|
1358 u->buffer.last += n;
|
|
28
|
1359
|
|
|
1360 #if 0
|
|
424
|
1361 u->valid_header_in = 0;
|
|
|
1362
|
|
|
1363 u->peer.cached = 0;
|
|
28
|
1364 #endif
|
|
|
1365
|
|
424
|
1366 rc = u->process_header(r);
|
|
|
1367
|
|
|
1368 if (rc == NGX_AGAIN) {
|
|
|
1369
|
|
|
1370 if (u->buffer.pos == u->buffer.end) {
|
|
430
|
1371 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1372 "upstream sent too big header");
|
|
|
1373
|
|
|
1374 ngx_http_upstream_next(r, u,
|
|
|
1375 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1376 return;
|
|
|
1377 }
|
|
|
1378
|
|
|
1379 continue;
|
|
28
|
1380 }
|
|
|
1381
|
|
424
|
1382 break;
|
|
28
|
1383 }
|
|
|
1384
|
|
|
1385 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1386 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1387 return;
|
|
|
1388 }
|
|
|
1389
|
|
356
|
1390 if (rc == NGX_ERROR) {
|
|
28
|
1391 ngx_http_upstream_finalize_request(r, u,
|
|
|
1392 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1393 return;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 /* rc == NGX_OK */
|
|
|
1397
|
|
412
|
1398 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1399
|
|
|
1400 if (r->subrequest_in_memory) {
|
|
|
1401 u->buffer.last = u->buffer.pos;
|
|
58
|
1402 }
|
|
|
1403
|
|
412
|
1404 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1405 return;
|
|
|
1406 }
|
|
|
1407
|
|
412
|
1408 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1409 return;
|
|
|
1410 }
|
|
58
|
1411 }
|
|
|
1412
|
|
464
|
1413 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
64
|
1414 return;
|
|
|
1415 }
|
|
|
1416
|
|
248
|
1417 if (!r->subrequest_in_memory) {
|
|
|
1418 ngx_http_upstream_send_response(r, u);
|
|
|
1419 return;
|
|
|
1420 }
|
|
|
1421
|
|
|
1422 /* subrequest content in memory */
|
|
|
1423
|
|
|
1424 if (u->input_filter == NULL) {
|
|
|
1425 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1426 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1427 u->input_filter_ctx = r;
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1431 ngx_http_upstream_finalize_request(r, u,
|
|
|
1432 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1433 return;
|
|
|
1434 }
|
|
|
1435
|
|
420
|
1436 n = u->buffer.last - u->buffer.pos;
|
|
|
1437
|
|
|
1438 if (n) {
|
|
|
1439 u->buffer.last -= n;
|
|
|
1440
|
|
430
|
1441 u->state->response_length += n;
|
|
|
1442
|
|
420
|
1443 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1444 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1445 return;
|
|
|
1446 }
|
|
|
1447
|
|
420
|
1448 if (u->length == 0) {
|
|
|
1449 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1450 return;
|
|
|
1451 }
|
|
248
|
1452 }
|
|
|
1453
|
|
426
|
1454 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1455
|
|
430
|
1456 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1457 }
|
|
|
1458
|
|
|
1459
|
|
294
|
1460 static ngx_int_t
|
|
412
|
1461 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1462 {
|
|
|
1463 ngx_uint_t status;
|
|
|
1464 ngx_http_upstream_next_t *un;
|
|
|
1465
|
|
|
1466 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
|
1467 return NGX_DECLINED;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 status = u->headers_in.status_n;
|
|
|
1471
|
|
|
1472 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1473
|
|
|
1474 if (status != un->status) {
|
|
|
1475 continue;
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1479 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1480 return NGX_OK;
|
|
|
1481 }
|
|
|
1482
|
|
|
1483 #if (NGX_HTTP_CACHE)
|
|
|
1484
|
|
464
|
1485 if (u->peer.tries == 0
|
|
|
1486 && u->stale_cache
|
|
|
1487 && (u->conf->cache_use_stale & un->mask))
|
|
|
1488 {
|
|
412
|
1489 ngx_http_upstream_finalize_request(r, u,
|
|
464
|
1490 ngx_http_upstream_cache_send(r, u));
|
|
412
|
1491 return NGX_OK;
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 #endif
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 return NGX_DECLINED;
|
|
|
1498 }
|
|
|
1499
|
|
|
1500
|
|
|
1501 static ngx_int_t
|
|
|
1502 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1503 ngx_http_upstream_t *u)
|
|
|
1504 {
|
|
|
1505 ngx_int_t status;
|
|
|
1506 ngx_uint_t i;
|
|
|
1507 ngx_table_elt_t *h;
|
|
|
1508 ngx_http_err_page_t *err_page;
|
|
|
1509 ngx_http_core_loc_conf_t *clcf;
|
|
|
1510
|
|
438
|
1511 status = u->headers_in.status_n;
|
|
|
1512
|
|
|
1513 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1514 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1515 return NGX_OK;
|
|
|
1516 }
|
|
|
1517
|
|
412
|
1518 if (!u->conf->intercept_errors) {
|
|
|
1519 return NGX_DECLINED;
|
|
|
1520 }
|
|
|
1521
|
|
|
1522 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1523
|
|
|
1524 if (clcf->error_pages == NULL) {
|
|
|
1525 return NGX_DECLINED;
|
|
|
1526 }
|
|
|
1527
|
|
|
1528 err_page = clcf->error_pages->elts;
|
|
|
1529 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1530
|
|
|
1531 if (err_page[i].status == status) {
|
|
|
1532
|
|
|
1533 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1534
|
|
|
1535 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1536
|
|
|
1537 if (h == NULL) {
|
|
|
1538 ngx_http_upstream_finalize_request(r, u,
|
|
|
1539 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1540 return NGX_OK;
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 *h = *u->headers_in.www_authenticate;
|
|
|
1544
|
|
|
1545 r->headers_out.www_authenticate = h;
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1549
|
|
|
1550 return NGX_OK;
|
|
|
1551 }
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 return NGX_DECLINED;
|
|
|
1555 }
|
|
|
1556
|
|
|
1557
|
|
|
1558 static ngx_int_t
|
|
294
|
1559 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1560 {
|
|
|
1561 int err;
|
|
|
1562 socklen_t len;
|
|
|
1563
|
|
|
1564 #if (NGX_HAVE_KQUEUE)
|
|
|
1565
|
|
|
1566 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1567 if (c->write->pending_eof) {
|
|
336
|
1568 c->log->action = "connecting to upstream";
|
|
296
|
1569 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1570 "kevent() reported that connect() failed");
|
|
|
1571 return NGX_ERROR;
|
|
|
1572 }
|
|
294
|
1573
|
|
|
1574 } else
|
|
|
1575 #endif
|
|
|
1576 {
|
|
296
|
1577 err = 0;
|
|
|
1578 len = sizeof(int);
|
|
|
1579
|
|
|
1580 /*
|
|
|
1581 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1582 * Solaris returns -1 and sets errno
|
|
|
1583 */
|
|
|
1584
|
|
|
1585 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1586 == -1)
|
|
|
1587 {
|
|
|
1588 err = ngx_errno;
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 if (err) {
|
|
336
|
1592 c->log->action = "connecting to upstream";
|
|
296
|
1593 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1594 return NGX_ERROR;
|
|
|
1595 }
|
|
294
|
1596 }
|
|
|
1597
|
|
|
1598 return NGX_OK;
|
|
|
1599 }
|
|
|
1600
|
|
|
1601
|
|
464
|
1602 static ngx_int_t
|
|
|
1603 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1604 {
|
|
|
1605 ngx_str_t *uri, args;
|
|
|
1606 ngx_uint_t i, flags;
|
|
|
1607 ngx_list_part_t *part;
|
|
|
1608 ngx_table_elt_t *h;
|
|
|
1609 ngx_http_upstream_header_t *hh;
|
|
|
1610 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1611
|
|
|
1612 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1613
|
|
|
1614 if (u->headers_in.x_accel_redirect) {
|
|
|
1615
|
|
|
1616 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1617
|
|
|
1618 part = &u->headers_in.headers.part;
|
|
|
1619 h = part->elts;
|
|
|
1620
|
|
|
1621 for (i = 0; /* void */; i++) {
|
|
|
1622
|
|
|
1623 if (i >= part->nelts) {
|
|
|
1624 if (part->next == NULL) {
|
|
|
1625 break;
|
|
|
1626 }
|
|
|
1627
|
|
|
1628 part = part->next;
|
|
|
1629 h = part->elts;
|
|
|
1630 i = 0;
|
|
|
1631 }
|
|
|
1632
|
|
|
1633 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1634 h[i].lowcase_key, h[i].key.len);
|
|
|
1635
|
|
|
1636 if (hh && hh->redirect) {
|
|
|
1637 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1638 ngx_http_finalize_request(r,
|
|
|
1639 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1640 return NGX_DONE;
|
|
|
1641 }
|
|
|
1642 }
|
|
|
1643 }
|
|
|
1644
|
|
|
1645 uri = &u->headers_in.x_accel_redirect->value;
|
|
|
1646 args.len = 0;
|
|
|
1647 args.data = NULL;
|
|
|
1648 flags = 0;
|
|
|
1649
|
|
|
1650 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1651 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
|
1652 return NGX_DONE;
|
|
|
1653 }
|
|
|
1654
|
|
|
1655 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1656 r->zero_in_uri = 1;
|
|
|
1657 }
|
|
|
1658
|
|
|
1659 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1660 r->method = NGX_HTTP_GET;
|
|
|
1661 }
|
|
|
1662
|
|
|
1663 r->valid_unparsed_uri = 0;
|
|
|
1664
|
|
|
1665 ngx_http_internal_redirect(r, uri, &args);
|
|
|
1666 return NGX_DONE;
|
|
|
1667 }
|
|
|
1668
|
|
|
1669 part = &u->headers_in.headers.part;
|
|
|
1670 h = part->elts;
|
|
|
1671
|
|
|
1672 for (i = 0; /* void */; i++) {
|
|
|
1673
|
|
|
1674 if (i >= part->nelts) {
|
|
|
1675 if (part->next == NULL) {
|
|
|
1676 break;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 part = part->next;
|
|
|
1680 h = part->elts;
|
|
|
1681 i = 0;
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1685 h[i].lowcase_key, h[i].key.len))
|
|
|
1686 {
|
|
|
1687 continue;
|
|
|
1688 }
|
|
|
1689
|
|
|
1690 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1691 h[i].lowcase_key, h[i].key.len);
|
|
|
1692
|
|
|
1693 if (hh) {
|
|
|
1694 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1695 ngx_http_upstream_finalize_request(r, u,
|
|
|
1696 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1697 return NGX_DONE;
|
|
|
1698 }
|
|
|
1699
|
|
|
1700 continue;
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1704 ngx_http_upstream_finalize_request(r, u,
|
|
|
1705 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1706 return NGX_DONE;
|
|
|
1707 }
|
|
|
1708 }
|
|
|
1709
|
|
|
1710 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1711 r->headers_out.server->hash = 0;
|
|
|
1712 }
|
|
|
1713
|
|
|
1714 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1715 r->headers_out.date->hash = 0;
|
|
|
1716 }
|
|
|
1717
|
|
|
1718 r->headers_out.status = u->headers_in.status_n;
|
|
|
1719 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1720
|
|
|
1721 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1722
|
|
|
1723 if (r->headers_out.content_length_n != -1) {
|
|
|
1724 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1725
|
|
|
1726 } else {
|
|
|
1727 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1728 }
|
|
|
1729
|
|
|
1730 return NGX_OK;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733
|
|
248
|
1734 static void
|
|
430
|
1735 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1736 ngx_http_upstream_t *u)
|
|
248
|
1737 {
|
|
430
|
1738 size_t size;
|
|
|
1739 ssize_t n;
|
|
|
1740 ngx_buf_t *b;
|
|
|
1741 ngx_event_t *rev;
|
|
|
1742 ngx_connection_t *c;
|
|
|
1743
|
|
|
1744 c = u->peer.connection;
|
|
|
1745 rev = c->read;
|
|
248
|
1746
|
|
|
1747 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1748 "http upstream process body on memory");
|
|
|
1749
|
|
|
1750 if (rev->timedout) {
|
|
|
1751 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1752 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1753 return;
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 b = &u->buffer;
|
|
|
1757
|
|
|
1758 for ( ;; ) {
|
|
|
1759
|
|
|
1760 size = b->end - b->last;
|
|
|
1761
|
|
|
1762 if (size == 0) {
|
|
|
1763 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1764 "upstream buffer is too small to read repsonse");
|
|
|
1765 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1766 return;
|
|
|
1767 }
|
|
|
1768
|
|
|
1769 n = c->recv(c, b->last, size);
|
|
|
1770
|
|
|
1771 if (n == NGX_AGAIN) {
|
|
|
1772 break;
|
|
|
1773 }
|
|
|
1774
|
|
|
1775 if (n == 0 || n == NGX_ERROR) {
|
|
|
1776 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1777 return;
|
|
|
1778 }
|
|
|
1779
|
|
430
|
1780 u->state->response_length += n;
|
|
|
1781
|
|
248
|
1782 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1783 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1784 return;
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 if (!rev->ready) {
|
|
|
1788 break;
|
|
|
1789 }
|
|
|
1790 }
|
|
|
1791
|
|
430
|
1792 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1793 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1794 return;
|
|
|
1795 }
|
|
|
1796
|
|
|
1797 if (rev->active) {
|
|
|
1798 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1799
|
|
|
1800 } else if (rev->timer_set) {
|
|
|
1801 ngx_del_timer(rev);
|
|
|
1802 }
|
|
230
|
1803 }
|
|
|
1804
|
|
|
1805
|
|
|
1806 static void
|
|
|
1807 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1808 {
|
|
|
1809 int tcp_nodelay;
|
|
430
|
1810 ssize_t n;
|
|
230
|
1811 ngx_int_t rc;
|
|
|
1812 ngx_event_pipe_t *p;
|
|
|
1813 ngx_connection_t *c;
|
|
|
1814 ngx_http_core_loc_conf_t *clcf;
|
|
|
1815
|
|
58
|
1816 rc = ngx_http_send_header(r);
|
|
28
|
1817
|
|
274
|
1818 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1819 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1820 return;
|
|
|
1821 }
|
|
|
1822
|
|
|
1823 u->header_sent = 1;
|
|
|
1824
|
|
122
|
1825 if (r->request_body && r->request_body->temp_file) {
|
|
464
|
1826 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
|
1827 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1828 }
|
|
|
1829
|
|
132
|
1830 c = r->connection;
|
|
|
1831
|
|
130
|
1832 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1833
|
|
198
|
1834 if (!u->buffering) {
|
|
130
|
1835
|
|
|
1836 if (u->input_filter == NULL) {
|
|
|
1837 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1838 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1839 u->input_filter_ctx = r;
|
|
|
1840 }
|
|
|
1841
|
|
428
|
1842 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
1843 r->write_event_handler =
|
|
|
1844 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1845
|
|
|
1846 r->limit_rate = 0;
|
|
|
1847
|
|
|
1848 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1849 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1850 return;
|
|
|
1851 }
|
|
|
1852
|
|
132
|
1853 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1854 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1855
|
|
|
1856 tcp_nodelay = 1;
|
|
|
1857
|
|
|
1858 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1859 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1860 {
|
|
|
1861 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1862 "setsockopt(TCP_NODELAY) failed");
|
|
|
1863 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1864 return;
|
|
|
1865 }
|
|
|
1866
|
|
|
1867 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1868 }
|
|
|
1869
|
|
430
|
1870 n = u->buffer.last - u->buffer.pos;
|
|
|
1871
|
|
|
1872 if (n) {
|
|
130
|
1873 u->buffer.last = u->buffer.pos;
|
|
|
1874
|
|
430
|
1875 u->state->response_length += n;
|
|
|
1876
|
|
|
1877 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
1878 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1879 return;
|
|
|
1880 }
|
|
|
1881
|
|
428
|
1882 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
1883
|
|
|
1884 } else {
|
|
|
1885 u->buffer.pos = u->buffer.start;
|
|
|
1886 u->buffer.last = u->buffer.start;
|
|
|
1887
|
|
|
1888 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1889 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1890 return;
|
|
|
1891 }
|
|
336
|
1892
|
|
|
1893 if (u->peer.connection->read->ready) {
|
|
430
|
1894 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
1895 }
|
|
130
|
1896 }
|
|
|
1897
|
|
|
1898 return;
|
|
|
1899 }
|
|
|
1900
|
|
28
|
1901 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1902
|
|
464
|
1903 #if (NGX_HTTP_CACHE)
|
|
|
1904
|
|
|
1905 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
|
1906 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
|
1907 r->cache->file.fd = NGX_INVALID_FILE;
|
|
28
|
1908 }
|
|
|
1909
|
|
340
|
1910 if (u->cacheable) {
|
|
464
|
1911 time_t now, valid;
|
|
|
1912
|
|
|
1913 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
|
1914 u->headers_in.status_n);
|
|
|
1915 if (valid) {
|
|
|
1916
|
|
|
1917 now = ngx_time();
|
|
|
1918
|
|
|
1919 r->cache->valid_sec = now + valid;
|
|
|
1920
|
|
|
1921 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
|
1922 r->cache->date = now;
|
|
|
1923 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
|
1924
|
|
|
1925 if (r->headers_out.content_length_n != -1) {
|
|
|
1926 r->cache->length = r->cache->body_start
|
|
|
1927 + r->headers_out.content_length_n;
|
|
|
1928 }
|
|
|
1929
|
|
|
1930 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
|
1931
|
|
|
1932 } else {
|
|
|
1933 u->cacheable = 0;
|
|
|
1934 }
|
|
28
|
1935 }
|
|
|
1936
|
|
|
1937 #endif
|
|
|
1938
|
|
130
|
1939 p = u->pipe;
|
|
28
|
1940
|
|
|
1941 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1942 p->output_ctx = r;
|
|
|
1943 p->tag = u->output.tag;
|
|
126
|
1944 p->bufs = u->conf->bufs;
|
|
28
|
1945 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1946 p->upstream = u->peer.connection;
|
|
132
|
1947 p->downstream = c;
|
|
28
|
1948 p->pool = r->pool;
|
|
132
|
1949 p->log = c->log;
|
|
126
|
1950
|
|
340
|
1951 p->cacheable = u->cacheable || u->store;
|
|
28
|
1952
|
|
50
|
1953 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1954 if (p->temp_file == NULL) {
|
|
28
|
1955 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1956 return;
|
|
|
1957 }
|
|
|
1958
|
|
|
1959 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1960 p->temp_file->file.log = c->log;
|
|
28
|
1961 p->temp_file->path = u->conf->temp_path;
|
|
|
1962 p->temp_file->pool = r->pool;
|
|
126
|
1963
|
|
464
|
1964 if (p->cacheable) {
|
|
28
|
1965 p->temp_file->persistent = 1;
|
|
318
|
1966
|
|
28
|
1967 } else {
|
|
216
|
1968 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1969 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1970 "to a temporary file";
|
|
|
1971 }
|
|
|
1972
|
|
|
1973 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1974 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1975
|
|
50
|
1976 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1977 if (p->preread_bufs == NULL) {
|
|
28
|
1978 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1979 return;
|
|
|
1980 }
|
|
318
|
1981
|
|
130
|
1982 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1983 p->preread_bufs->next = NULL;
|
|
130
|
1984 u->buffer.recycled = 1;
|
|
|
1985
|
|
|
1986 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1987
|
|
340
|
1988 if (u->cacheable) {
|
|
318
|
1989
|
|
28
|
1990 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1991 if (p->buf_to_file == NULL) {
|
|
|
1992 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1993 return;
|
|
|
1994 }
|
|
318
|
1995
|
|
130
|
1996 p->buf_to_file->pos = u->buffer.start;
|
|
|
1997 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1998 p->buf_to_file->temporary = 1;
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
2002 /* the posted aio operation may currupt a shadow buffer */
|
|
|
2003 p->single_buf = 1;
|
|
|
2004 }
|
|
|
2005
|
|
|
2006 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
2007 p->free_bufs = 1;
|
|
|
2008
|
|
|
2009 /*
|
|
130
|
2010 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
2011 * as though these bytes were read
|
|
|
2012 */
|
|
130
|
2013 u->buffer.last = u->buffer.pos;
|
|
28
|
2014
|
|
|
2015 if (u->conf->cyclic_temp_file) {
|
|
|
2016
|
|
|
2017 /*
|
|
|
2018 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
2019 * because the writing a new data may interfere with sendfile()
|
|
|
2020 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
2021 */
|
|
|
2022
|
|
|
2023 p->cyclic_temp_file = 1;
|
|
132
|
2024 c->sendfile = 0;
|
|
28
|
2025
|
|
|
2026 } else {
|
|
|
2027 p->cyclic_temp_file = 0;
|
|
|
2028 }
|
|
|
2029
|
|
|
2030 p->read_timeout = u->conf->read_timeout;
|
|
|
2031 p->send_timeout = clcf->send_timeout;
|
|
|
2032 p->send_lowat = clcf->send_lowat;
|
|
|
2033
|
|
428
|
2034 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
2035 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
2036
|
|
430
|
2037 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
2038 }
|
|
|
2039
|
|
|
2040
|
|
36
|
2041 static void
|
|
130
|
2042 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
2043 {
|
|
428
|
2044 ngx_event_t *wev;
|
|
|
2045 ngx_connection_t *c;
|
|
|
2046 ngx_http_upstream_t *u;
|
|
|
2047
|
|
|
2048 c = r->connection;
|
|
|
2049 u = r->upstream;
|
|
|
2050 wev = c->write;
|
|
|
2051
|
|
|
2052 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2053 "http upstream process non buffered downstream");
|
|
|
2054
|
|
|
2055 c->log->action = "sending to client";
|
|
|
2056
|
|
|
2057 if (wev->timedout) {
|
|
|
2058 c->timedout = 1;
|
|
|
2059 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
2060 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2061 return;
|
|
|
2062 }
|
|
|
2063
|
|
|
2064 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
2065 }
|
|
|
2066
|
|
|
2067
|
|
|
2068 static void
|
|
430
|
2069 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
2070 ngx_http_upstream_t *u)
|
|
428
|
2071 {
|
|
430
|
2072 ngx_connection_t *c;
|
|
|
2073
|
|
|
2074 c = u->peer.connection;
|
|
428
|
2075
|
|
|
2076 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2077 "http upstream process non buffered upstream");
|
|
|
2078
|
|
|
2079 c->log->action = "reading upstream";
|
|
|
2080
|
|
430
|
2081 if (c->read->timedout) {
|
|
428
|
2082 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2083 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2084 return;
|
|
|
2085 }
|
|
|
2086
|
|
|
2087 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
2088 }
|
|
|
2089
|
|
|
2090
|
|
|
2091 static void
|
|
|
2092 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
2093 ngx_uint_t do_write)
|
|
130
|
2094 {
|
|
|
2095 size_t size;
|
|
|
2096 ssize_t n;
|
|
|
2097 ngx_buf_t *b;
|
|
132
|
2098 ngx_int_t rc;
|
|
428
|
2099 ngx_connection_t *downstream, *upstream;
|
|
130
|
2100 ngx_http_upstream_t *u;
|
|
|
2101 ngx_http_core_loc_conf_t *clcf;
|
|
|
2102
|
|
244
|
2103 u = r->upstream;
|
|
260
|
2104 downstream = r->connection;
|
|
|
2105 upstream = u->peer.connection;
|
|
130
|
2106
|
|
|
2107 b = &u->buffer;
|
|
|
2108
|
|
428
|
2109 do_write = do_write || u->length == 0;
|
|
130
|
2110
|
|
|
2111 for ( ;; ) {
|
|
|
2112
|
|
|
2113 if (do_write) {
|
|
|
2114
|
|
|
2115 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
2116 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
2117
|
|
260
|
2118 if (downstream->destroyed) {
|
|
132
|
2119 return;
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 if (rc == NGX_ERROR) {
|
|
130
|
2123 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2124 return;
|
|
|
2125 }
|
|
|
2126
|
|
|
2127 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
2128 &u->out_bufs, u->output.tag);
|
|
|
2129 }
|
|
|
2130
|
|
|
2131 if (u->busy_bufs == NULL) {
|
|
|
2132
|
|
|
2133 if (u->length == 0
|
|
260
|
2134 || upstream->read->eof
|
|
|
2135 || upstream->read->error)
|
|
130
|
2136 {
|
|
|
2137 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2138 return;
|
|
|
2139 }
|
|
|
2140
|
|
|
2141 b->pos = b->start;
|
|
|
2142 b->last = b->start;
|
|
|
2143 }
|
|
|
2144 }
|
|
|
2145
|
|
|
2146 size = b->end - b->last;
|
|
|
2147
|
|
|
2148 if (size > u->length) {
|
|
|
2149 size = u->length;
|
|
|
2150 }
|
|
|
2151
|
|
260
|
2152 if (size && upstream->read->ready) {
|
|
|
2153
|
|
|
2154 n = upstream->recv(upstream, b->last, size);
|
|
130
|
2155
|
|
|
2156 if (n == NGX_AGAIN) {
|
|
|
2157 break;
|
|
|
2158 }
|
|
|
2159
|
|
|
2160 if (n > 0) {
|
|
430
|
2161 u->state->response_length += n;
|
|
|
2162
|
|
130
|
2163 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
2164 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2165 return;
|
|
|
2166 }
|
|
|
2167 }
|
|
|
2168
|
|
|
2169 do_write = 1;
|
|
|
2170
|
|
|
2171 continue;
|
|
|
2172 }
|
|
|
2173
|
|
|
2174 break;
|
|
|
2175 }
|
|
|
2176
|
|
428
|
2177 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2178
|
|
260
|
2179 if (downstream->data == r) {
|
|
|
2180 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
2181 != NGX_OK)
|
|
132
|
2182 {
|
|
|
2183 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2184 return;
|
|
|
2185 }
|
|
130
|
2186 }
|
|
|
2187
|
|
276
|
2188 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2189 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2190
|
|
|
2191 } else if (downstream->write->timer_set) {
|
|
|
2192 ngx_del_timer(downstream->write);
|
|
130
|
2193 }
|
|
|
2194
|
|
426
|
2195 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2196 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2197 return;
|
|
|
2198 }
|
|
|
2199
|
|
276
|
2200 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2201 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2202
|
|
|
2203 } else if (upstream->read->timer_set) {
|
|
|
2204 ngx_del_timer(upstream->read);
|
|
130
|
2205 }
|
|
|
2206 }
|
|
|
2207
|
|
|
2208
|
|
|
2209 static ngx_int_t
|
|
|
2210 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2211 {
|
|
|
2212 return NGX_OK;
|
|
|
2213 }
|
|
|
2214
|
|
|
2215
|
|
|
2216 static ngx_int_t
|
|
|
2217 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2218 {
|
|
|
2219 ngx_http_request_t *r = data;
|
|
|
2220
|
|
|
2221 ngx_buf_t *b;
|
|
|
2222 ngx_chain_t *cl, **ll;
|
|
|
2223 ngx_http_upstream_t *u;
|
|
|
2224
|
|
|
2225 u = r->upstream;
|
|
|
2226
|
|
|
2227 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2228 ll = &cl->next;
|
|
|
2229 }
|
|
|
2230
|
|
|
2231 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2232 if (cl == NULL) {
|
|
|
2233 return NGX_ERROR;
|
|
|
2234 }
|
|
|
2235
|
|
|
2236 *ll = cl;
|
|
|
2237
|
|
|
2238 cl->buf->flush = 1;
|
|
|
2239 cl->buf->memory = 1;
|
|
|
2240
|
|
|
2241 b = &u->buffer;
|
|
|
2242
|
|
|
2243 cl->buf->pos = b->last;
|
|
|
2244 b->last += bytes;
|
|
|
2245 cl->buf->last = b->last;
|
|
366
|
2246 cl->buf->tag = u->output.tag;
|
|
130
|
2247
|
|
|
2248 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2249 return NGX_OK;
|
|
|
2250 }
|
|
|
2251
|
|
|
2252 u->length -= bytes;
|
|
|
2253
|
|
|
2254 return NGX_OK;
|
|
|
2255 }
|
|
|
2256
|
|
|
2257
|
|
|
2258 static void
|
|
58
|
2259 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2260 {
|
|
428
|
2261 ngx_event_t *wev;
|
|
|
2262 ngx_connection_t *c;
|
|
58
|
2263 ngx_event_pipe_t *p;
|
|
28
|
2264 ngx_http_upstream_t *u;
|
|
|
2265
|
|
428
|
2266 c = r->connection;
|
|
28
|
2267 u = r->upstream;
|
|
130
|
2268 p = u->pipe;
|
|
428
|
2269 wev = c->write;
|
|
|
2270
|
|
|
2271 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2272 "http upstream process downstream");
|
|
|
2273
|
|
|
2274 c->log->action = "sending to client";
|
|
|
2275
|
|
|
2276 if (wev->timedout) {
|
|
|
2277
|
|
|
2278 if (wev->delayed) {
|
|
|
2279
|
|
|
2280 wev->timedout = 0;
|
|
|
2281 wev->delayed = 0;
|
|
|
2282
|
|
|
2283 if (!wev->ready) {
|
|
|
2284 ngx_add_timer(wev, p->send_timeout);
|
|
|
2285
|
|
|
2286 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2287 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2288 }
|
|
|
2289
|
|
|
2290 return;
|
|
|
2291 }
|
|
|
2292
|
|
|
2293 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2294
|
|
|
2295 if (c->destroyed) {
|
|
76
|
2296 return;
|
|
|
2297 }
|
|
|
2298
|
|
428
|
2299 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2300 return;
|
|
76
|
2301 }
|
|
28
|
2302
|
|
|
2303 } else {
|
|
428
|
2304 p->downstream_error = 1;
|
|
|
2305 c->timedout = 1;
|
|
|
2306 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2307 }
|
|
|
2308
|
|
|
2309 } else {
|
|
428
|
2310
|
|
|
2311 if (wev->delayed) {
|
|
|
2312
|
|
76
|
2313 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2314 "http downstream delayed");
|
|
|
2315
|
|
428
|
2316 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2317 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2318 }
|
|
|
2319
|
|
|
2320 return;
|
|
|
2321 }
|
|
|
2322
|
|
428
|
2323 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
|
2324
|
|
|
2325 if (c->destroyed) {
|
|
132
|
2326 return;
|
|
|
2327 }
|
|
|
2328
|
|
28
|
2329 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2330 return;
|
|
|
2331 }
|
|
|
2332 }
|
|
126
|
2333
|
|
428
|
2334 ngx_http_upstream_process_request(r);
|
|
|
2335 }
|
|
|
2336
|
|
|
2337
|
|
|
2338 static void
|
|
430
|
2339 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2340 ngx_http_upstream_t *u)
|
|
428
|
2341 {
|
|
430
|
2342 ngx_connection_t *c;
|
|
|
2343
|
|
|
2344 c = u->peer.connection;
|
|
428
|
2345
|
|
|
2346 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2347 "http upstream process upstream");
|
|
|
2348
|
|
|
2349 c->log->action = "reading upstream";
|
|
|
2350
|
|
430
|
2351 if (c->read->timedout) {
|
|
|
2352 u->pipe->upstream_error = 1;
|
|
428
|
2353 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2354
|
|
|
2355 } else {
|
|
|
2356 c = r->connection;
|
|
|
2357
|
|
430
|
2358 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
428
|
2359
|
|
|
2360 if (c->destroyed) {
|
|
|
2361 return;
|
|
|
2362 }
|
|
|
2363
|
|
|
2364 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2365 return;
|
|
|
2366 }
|
|
|
2367 }
|
|
|
2368
|
|
|
2369 ngx_http_upstream_process_request(r);
|
|
|
2370 }
|
|
|
2371
|
|
|
2372
|
|
|
2373 static void
|
|
|
2374 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2375 {
|
|
438
|
2376 ngx_uint_t del;
|
|
428
|
2377 ngx_temp_file_t *tf;
|
|
|
2378 ngx_event_pipe_t *p;
|
|
|
2379 ngx_http_upstream_t *u;
|
|
|
2380
|
|
|
2381 u = r->upstream;
|
|
|
2382 p = u->pipe;
|
|
|
2383
|
|
28
|
2384 if (u->peer.connection) {
|
|
|
2385
|
|
318
|
2386 if (u->store) {
|
|
|
2387
|
|
438
|
2388 del = p->upstream_error;
|
|
|
2389
|
|
364
|
2390 tf = u->pipe->temp_file;
|
|
|
2391
|
|
440
|
2392 if (p->upstream_eof || p->upstream_done) {
|
|
438
|
2393
|
|
|
2394 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2395 && (u->headers_in.content_length_n == -1
|
|
|
2396 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2397 {
|
|
|
2398 ngx_http_upstream_store(r, u);
|
|
|
2399
|
|
|
2400 } else {
|
|
|
2401 del = 1;
|
|
|
2402 }
|
|
|
2403 }
|
|
|
2404
|
|
|
2405 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
2406
|
|
364
|
2407 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2408
|
|
318
|
2409 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2410 ngx_delete_file_n " \"%s\" failed",
|
|
|
2411 u->pipe->temp_file->file.name.data);
|
|
|
2412 }
|
|
|
2413 }
|
|
|
2414 }
|
|
|
2415
|
|
464
|
2416 #if (NGX_HTTP_CACHE)
|
|
|
2417
|
|
|
2418 if (u->cacheable) {
|
|
|
2419
|
|
|
2420 if (p->upstream_done) {
|
|
|
2421 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2422
|
|
|
2423 } else if (p->upstream_eof) {
|
|
|
2424
|
|
|
2425 /* TODO: check length & update cache */
|
|
|
2426
|
|
|
2427 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2428
|
|
|
2429 } else if (p->upstream_error) {
|
|
|
2430 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2431 }
|
|
|
2432 }
|
|
|
2433
|
|
|
2434 #endif
|
|
|
2435
|
|
|
2436 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2437 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2438 "http upstream exit: %p", p->out);
|
|
28
|
2439 #if 0
|
|
|
2440 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2441 #endif
|
|
|
2442 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2443 return;
|
|
|
2444 }
|
|
|
2445 }
|
|
|
2446
|
|
|
2447 if (p->downstream_error) {
|
|
428
|
2448 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2449 "http upstream downstream error");
|
|
28
|
2450
|
|
340
|
2451 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2452 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2453 }
|
|
|
2454 }
|
|
|
2455 }
|
|
|
2456
|
|
|
2457
|
|
36
|
2458 static void
|
|
318
|
2459 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2460 {
|
|
370
|
2461 size_t root;
|
|
|
2462 time_t lm;
|
|
|
2463 ngx_str_t path;
|
|
|
2464 ngx_temp_file_t *tf;
|
|
|
2465 ngx_ext_rename_file_t ext;
|
|
318
|
2466
|
|
358
|
2467 tf = u->pipe->temp_file;
|
|
|
2468
|
|
|
2469 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2470
|
|
|
2471 /* create file for empty 200 response */
|
|
|
2472
|
|
|
2473 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2474 if (tf == NULL) {
|
|
|
2475 return;
|
|
|
2476 }
|
|
|
2477
|
|
|
2478 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2479 tf->file.log = r->connection->log;
|
|
|
2480 tf->path = u->conf->temp_path;
|
|
|
2481 tf->pool = r->pool;
|
|
|
2482 tf->persistent = 1;
|
|
|
2483
|
|
|
2484 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2485 tf->persistent, tf->clean, tf->access)
|
|
|
2486 != NGX_OK)
|
|
|
2487 {
|
|
|
2488 return;
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 u->pipe->temp_file = tf;
|
|
|
2492 }
|
|
|
2493
|
|
370
|
2494 ext.access = u->conf->store_access;
|
|
430
|
2495 ext.path_access = u->conf->store_access;
|
|
370
|
2496 ext.time = -1;
|
|
|
2497 ext.create_path = 1;
|
|
|
2498 ext.delete_file = 1;
|
|
430
|
2499 ext.log_rename_error = 1;
|
|
370
|
2500 ext.log = r->connection->log;
|
|
318
|
2501
|
|
356
|
2502 if (u->headers_in.last_modified) {
|
|
|
2503
|
|
370
|
2504 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2505 u->headers_in.last_modified->value.len);
|
|
318
|
2506
|
|
|
2507 if (lm != NGX_ERROR) {
|
|
370
|
2508 ext.time = lm;
|
|
|
2509 ext.fd = tf->file.fd;
|
|
318
|
2510 }
|
|
|
2511 }
|
|
|
2512
|
|
320
|
2513 if (u->conf->store_lengths == NULL) {
|
|
|
2514
|
|
|
2515 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2516
|
|
|
2517 } else {
|
|
|
2518 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2519 u->conf->store_values->elts)
|
|
|
2520 == NULL)
|
|
|
2521 {
|
|
|
2522 return;
|
|
|
2523 }
|
|
|
2524 }
|
|
318
|
2525
|
|
|
2526 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2527 "upstream stores \"%s\" to \"%s\"",
|
|
|
2528 tf->file.name.data, path.data);
|
|
|
2529
|
|
|
2530 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2531 }
|
|
|
2532
|
|
|
2533
|
|
|
2534 static void
|
|
430
|
2535 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2536 {
|
|
430
|
2537 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2538 "http upstream dummy handler");
|
|
|
2539 }
|
|
|
2540
|
|
|
2541
|
|
36
|
2542 static void
|
|
|
2543 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2544 ngx_uint_t ft_type)
|
|
28
|
2545 {
|
|
260
|
2546 ngx_uint_t status, state;
|
|
28
|
2547
|
|
|
2548 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2549 "http next upstream, %xi", ft_type);
|
|
28
|
2550
|
|
|
2551 #if 0
|
|
|
2552 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2553 #endif
|
|
|
2554
|
|
74
|
2555 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2556 state = NGX_PEER_NEXT;
|
|
74
|
2557 } else {
|
|
260
|
2558 state = NGX_PEER_FAILED;
|
|
28
|
2559 }
|
|
74
|
2560
|
|
326
|
2561 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2562 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2563 }
|
|
74
|
2564
|
|
28
|
2565 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2566 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2567 "upstream timed out");
|
|
|
2568 }
|
|
126
|
2569
|
|
28
|
2570 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2571 status = 0;
|
|
|
2572
|
|
|
2573 } else {
|
|
|
2574 switch(ft_type) {
|
|
|
2575
|
|
|
2576 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2577 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2578 break;
|
|
|
2579
|
|
|
2580 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2581 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2582 break;
|
|
|
2583
|
|
|
2584 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2585 status = NGX_HTTP_NOT_FOUND;
|
|
|
2586 break;
|
|
|
2587
|
|
|
2588 /*
|
|
|
2589 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2590 * never reach here
|
|
|
2591 */
|
|
|
2592
|
|
|
2593 default:
|
|
|
2594 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2595 }
|
|
|
2596 }
|
|
|
2597
|
|
132
|
2598 if (r->connection->error) {
|
|
28
|
2599 ngx_http_upstream_finalize_request(r, u,
|
|
|
2600 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2601 return;
|
|
|
2602 }
|
|
|
2603
|
|
|
2604 if (status) {
|
|
|
2605 u->state->status = status;
|
|
|
2606
|
|
74
|
2607 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2608
|
|
|
2609 #if (NGX_HTTP_CACHE)
|
|
|
2610
|
|
464
|
2611 if (u->stale_cache && (u->conf->cache_use_stale & ft_type)) {
|
|
|
2612
|
|
28
|
2613 ngx_http_upstream_finalize_request(r, u,
|
|
464
|
2614 ngx_http_upstream_cache_send(r, u));
|
|
28
|
2615 return;
|
|
|
2616 }
|
|
|
2617 #endif
|
|
|
2618
|
|
|
2619 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2620 return;
|
|
|
2621 }
|
|
|
2622 }
|
|
|
2623
|
|
|
2624 if (u->peer.connection) {
|
|
|
2625 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2626 "close http upstream connection: %d",
|
|
|
2627 u->peer.connection->fd);
|
|
126
|
2628 #if (NGX_HTTP_SSL)
|
|
260
|
2629
|
|
126
|
2630 if (u->peer.connection->ssl) {
|
|
260
|
2631 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2632 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2633
|
|
|
2634 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2635 }
|
|
|
2636 #endif
|
|
260
|
2637
|
|
28
|
2638 ngx_close_connection(u->peer.connection);
|
|
|
2639 }
|
|
|
2640
|
|
|
2641 #if 0
|
|
|
2642 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2643 ngx_http_upstream_busy_lock(p);
|
|
|
2644 return;
|
|
|
2645 }
|
|
|
2646 #endif
|
|
|
2647
|
|
|
2648 ngx_http_upstream_connect(r, u);
|
|
|
2649 }
|
|
|
2650
|
|
|
2651
|
|
36
|
2652 static void
|
|
118
|
2653 ngx_http_upstream_cleanup(void *data)
|
|
|
2654 {
|
|
|
2655 ngx_http_request_t *r = data;
|
|
|
2656
|
|
356
|
2657 ngx_http_upstream_t *u;
|
|
|
2658
|
|
118
|
2659 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2660 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2661
|
|
356
|
2662 u = r->upstream;
|
|
|
2663
|
|
|
2664 if (u->resolved && u->resolved->ctx) {
|
|
|
2665 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2666 }
|
|
|
2667
|
|
356
|
2668 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2669 }
|
|
|
2670
|
|
|
2671
|
|
|
2672 static void
|
|
36
|
2673 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2674 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2675 {
|
|
262
|
2676 ngx_time_t *tp;
|
|
112
|
2677
|
|
32
|
2678 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2679 "finalize http upstream request: %i", rc);
|
|
28
|
2680
|
|
432
|
2681 if (u->cleanup) {
|
|
|
2682 *u->cleanup = NULL;
|
|
|
2683 }
|
|
118
|
2684
|
|
348
|
2685 if (u->state && u->state->response_sec) {
|
|
112
|
2686 tp = ngx_timeofday();
|
|
262
|
2687 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2688 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
430
|
2689
|
|
|
2690 if (u->pipe) {
|
|
|
2691 u->state->response_length = u->pipe->read_length;
|
|
|
2692 }
|
|
112
|
2693 }
|
|
|
2694
|
|
28
|
2695 u->finalize_request(r, rc);
|
|
|
2696
|
|
348
|
2697 if (u->peer.free) {
|
|
|
2698 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2699 }
|
|
260
|
2700
|
|
28
|
2701 if (u->peer.connection) {
|
|
260
|
2702
|
|
126
|
2703 #if (NGX_HTTP_SSL)
|
|
|
2704
|
|
|
2705 /* TODO: do not shutdown persistent connection */
|
|
|
2706
|
|
|
2707 if (u->peer.connection->ssl) {
|
|
260
|
2708
|
|
|
2709 /*
|
|
|
2710 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2711 * and do not wait its "close notify" shutdown alert.
|
|
|
2712 * It is acceptable according to the TLS standard.
|
|
|
2713 */
|
|
|
2714
|
|
|
2715 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2716
|
|
|
2717 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2718 }
|
|
|
2719 #endif
|
|
260
|
2720
|
|
|
2721 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2722 "close http upstream connection: %d",
|
|
|
2723 u->peer.connection->fd);
|
|
|
2724
|
|
28
|
2725 ngx_close_connection(u->peer.connection);
|
|
|
2726 }
|
|
|
2727
|
|
32
|
2728 u->peer.connection = NULL;
|
|
|
2729
|
|
130
|
2730 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2731 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2732 "http upstream temp fd: %d",
|
|
130
|
2733 u->pipe->temp_file->file.fd);
|
|
28
|
2734 }
|
|
|
2735
|
|
464
|
2736 #if (NGX_HTTP_CACHE)
|
|
|
2737
|
|
|
2738 if (r->cache) {
|
|
|
2739 time_t valid;
|
|
|
2740
|
|
28
|
2741 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2742 "http upstream cache fd: %d",
|
|
464
|
2743 r->cache->file.fd);
|
|
|
2744
|
|
|
2745 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
|
2746
|
|
|
2747 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
|
2748
|
|
|
2749 if (valid) {
|
|
|
2750 r->cache->valid_sec = ngx_time() + valid;
|
|
|
2751 r->cache->error = rc;
|
|
|
2752 }
|
|
|
2753 }
|
|
|
2754
|
|
|
2755 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2756 }
|
|
464
|
2757
|
|
28
|
2758 #endif
|
|
|
2759
|
|
464
|
2760 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
2761 {
|
|
|
2762 rc = 0;
|
|
|
2763 }
|
|
|
2764
|
|
64
|
2765 if (rc == NGX_DECLINED) {
|
|
|
2766 return;
|
|
|
2767 }
|
|
|
2768
|
|
32
|
2769 r->connection->log->action = "sending to client";
|
|
|
2770
|
|
426
|
2771 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2772 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2773 }
|
|
|
2774
|
|
|
2775 ngx_http_finalize_request(r, rc);
|
|
|
2776 }
|
|
|
2777
|
|
|
2778
|
|
58
|
2779 static ngx_int_t
|
|
|
2780 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2781 ngx_uint_t offset)
|
|
126
|
2782 {
|
|
58
|
2783 ngx_table_elt_t **ph;
|
|
126
|
2784
|
|
58
|
2785 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2786
|
|
|
2787 if (*ph == NULL) {
|
|
|
2788 *ph = h;
|
|
|
2789 }
|
|
|
2790
|
|
|
2791 return NGX_OK;
|
|
|
2792 }
|
|
|
2793
|
|
|
2794
|
|
|
2795 static ngx_int_t
|
|
|
2796 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2797 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2798 {
|
|
|
2799 ngx_array_t *pa;
|
|
|
2800 ngx_table_elt_t **ph;
|
|
|
2801
|
|
|
2802 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2803
|
|
|
2804 if (pa->elts == NULL) {
|
|
|
2805 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2806 {
|
|
|
2807 return NGX_ERROR;
|
|
|
2808 }
|
|
|
2809 }
|
|
|
2810
|
|
|
2811 ph = ngx_array_push(pa);
|
|
|
2812 if (ph == NULL) {
|
|
|
2813 return NGX_ERROR;
|
|
|
2814 }
|
|
|
2815
|
|
|
2816 *ph = h;
|
|
|
2817
|
|
|
2818 return NGX_OK;
|
|
|
2819 }
|
|
|
2820
|
|
|
2821
|
|
|
2822 static ngx_int_t
|
|
|
2823 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2824 ngx_uint_t offset)
|
|
|
2825 {
|
|
|
2826 return NGX_OK;
|
|
|
2827 }
|
|
|
2828
|
|
|
2829
|
|
|
2830 static ngx_int_t
|
|
76
|
2831 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2832 ngx_uint_t offset)
|
|
126
|
2833 {
|
|
76
|
2834 ngx_int_t n;
|
|
|
2835
|
|
|
2836 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2837
|
|
|
2838 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2839
|
|
|
2840 if (n != NGX_ERROR) {
|
|
|
2841 r->limit_rate = (size_t) n;
|
|
|
2842 }
|
|
|
2843
|
|
|
2844 return NGX_OK;
|
|
|
2845 }
|
|
|
2846
|
|
|
2847
|
|
|
2848 static ngx_int_t
|
|
198
|
2849 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2850 ngx_uint_t offset)
|
|
|
2851 {
|
|
|
2852 u_char c0, c1, c2;
|
|
|
2853
|
|
|
2854 if (r->upstream->conf->change_buffering) {
|
|
|
2855
|
|
|
2856 if (h->value.len == 2) {
|
|
|
2857 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2858 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2859
|
|
|
2860 if (c0 == 'n' && c1 == 'o') {
|
|
|
2861 r->upstream->buffering = 0;
|
|
|
2862 }
|
|
|
2863
|
|
|
2864 } else if (h->value.len == 3) {
|
|
|
2865 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2866 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2867 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2868
|
|
|
2869 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2870 r->upstream->buffering = 1;
|
|
|
2871 }
|
|
|
2872 }
|
|
|
2873 }
|
|
|
2874
|
|
|
2875 return NGX_OK;
|
|
|
2876 }
|
|
|
2877
|
|
|
2878
|
|
|
2879 static ngx_int_t
|
|
206
|
2880 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2881 ngx_uint_t offset)
|
|
|
2882 {
|
|
|
2883 r->headers_out.override_charset = &h->value;
|
|
|
2884
|
|
|
2885 return NGX_OK;
|
|
|
2886 }
|
|
|
2887
|
|
|
2888
|
|
|
2889 static ngx_int_t
|
|
58
|
2890 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2891 ngx_uint_t offset)
|
|
|
2892 {
|
|
122
|
2893 ngx_table_elt_t *ho, **ph;
|
|
58
|
2894
|
|
|
2895 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2896 if (ho == NULL) {
|
|
|
2897 return NGX_ERROR;
|
|
|
2898 }
|
|
|
2899
|
|
|
2900 *ho = *h;
|
|
|
2901
|
|
122
|
2902 if (offset) {
|
|
|
2903 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2904 *ph = ho;
|
|
|
2905 }
|
|
|
2906
|
|
58
|
2907 return NGX_OK;
|
|
|
2908 }
|
|
|
2909
|
|
|
2910
|
|
|
2911 static ngx_int_t
|
|
|
2912 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2913 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2914 {
|
|
|
2915 ngx_array_t *pa;
|
|
|
2916 ngx_table_elt_t *ho, **ph;
|
|
|
2917
|
|
|
2918 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2919
|
|
|
2920 if (pa->elts == NULL) {
|
|
|
2921 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2922 {
|
|
|
2923 return NGX_ERROR;
|
|
|
2924 }
|
|
|
2925 }
|
|
|
2926
|
|
|
2927 ph = ngx_array_push(pa);
|
|
|
2928 if (ph == NULL) {
|
|
|
2929 return NGX_ERROR;
|
|
|
2930 }
|
|
|
2931
|
|
|
2932 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2933 if (ho == NULL) {
|
|
|
2934 return NGX_ERROR;
|
|
|
2935 }
|
|
|
2936
|
|
|
2937 *ho = *h;
|
|
|
2938 *ph = ho;
|
|
|
2939
|
|
|
2940 return NGX_OK;
|
|
|
2941 }
|
|
|
2942
|
|
|
2943
|
|
|
2944 static ngx_int_t
|
|
|
2945 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2946 ngx_uint_t offset)
|
|
|
2947 {
|
|
206
|
2948 u_char *p, *last;
|
|
|
2949
|
|
|
2950 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2951 r->headers_out.content_type = h->value;
|
|
|
2952
|
|
206
|
2953 for (p = h->value.data; *p; p++) {
|
|
|
2954
|
|
|
2955 if (*p != ';') {
|
|
|
2956 continue;
|
|
|
2957 }
|
|
|
2958
|
|
|
2959 last = p;
|
|
|
2960
|
|
|
2961 while (*++p == ' ') { /* void */ }
|
|
|
2962
|
|
372
|
2963 if (*p == '\0') {
|
|
|
2964 return NGX_OK;
|
|
|
2965 }
|
|
|
2966
|
|
286
|
2967 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2968 continue;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 p += 8;
|
|
|
2972
|
|
|
2973 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2974
|
|
410
|
2975 if (*p == '"') {
|
|
|
2976 p++;
|
|
|
2977 }
|
|
|
2978
|
|
|
2979 last = h->value.data + h->value.len;
|
|
|
2980
|
|
|
2981 if (*(last - 1) == '"') {
|
|
|
2982 last--;
|
|
|
2983 }
|
|
|
2984
|
|
|
2985 r->headers_out.charset.len = last - p;
|
|
206
|
2986 r->headers_out.charset.data = p;
|
|
292
|
2987
|
|
|
2988 return NGX_OK;
|
|
206
|
2989 }
|
|
|
2990
|
|
58
|
2991 return NGX_OK;
|
|
|
2992 }
|
|
|
2993
|
|
|
2994
|
|
|
2995 static ngx_int_t
|
|
|
2996 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2997 ngx_uint_t offset)
|
|
|
2998 {
|
|
|
2999 ngx_table_elt_t *ho;
|
|
|
3000
|
|
|
3001 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3002 if (ho == NULL) {
|
|
|
3003 return NGX_ERROR;
|
|
|
3004 }
|
|
|
3005
|
|
|
3006 *ho = *h;
|
|
|
3007
|
|
|
3008 r->headers_out.content_length = ho;
|
|
|
3009 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
3010
|
|
|
3011 return NGX_OK;
|
|
|
3012 }
|
|
|
3013
|
|
|
3014
|
|
|
3015 static ngx_int_t
|
|
464
|
3016 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3017 ngx_uint_t offset)
|
|
|
3018 {
|
|
|
3019 ngx_table_elt_t *ho;
|
|
|
3020
|
|
|
3021 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3022 if (ho == NULL) {
|
|
|
3023 return NGX_ERROR;
|
|
|
3024 }
|
|
|
3025
|
|
|
3026 *ho = *h;
|
|
|
3027
|
|
|
3028 #if (NGX_HTTP_CACHE)
|
|
|
3029
|
|
|
3030 if (r->cached) {
|
|
|
3031 r->headers_out.last_modified = ho;
|
|
|
3032 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
|
3033 h->value.len);
|
|
|
3034 }
|
|
|
3035
|
|
|
3036 #endif
|
|
|
3037
|
|
|
3038 return NGX_OK;
|
|
|
3039 }
|
|
|
3040
|
|
|
3041
|
|
|
3042 static ngx_int_t
|
|
58
|
3043 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3044 ngx_uint_t offset)
|
|
|
3045 {
|
|
|
3046 ngx_int_t rc;
|
|
|
3047 ngx_table_elt_t *ho;
|
|
|
3048
|
|
|
3049 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3050 if (ho == NULL) {
|
|
|
3051 return NGX_ERROR;
|
|
|
3052 }
|
|
|
3053
|
|
|
3054 *ho = *h;
|
|
|
3055
|
|
|
3056 if (r->upstream->rewrite_redirect) {
|
|
|
3057 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
3058
|
|
78
|
3059 if (rc == NGX_DECLINED) {
|
|
|
3060 return NGX_OK;
|
|
|
3061 }
|
|
|
3062
|
|
58
|
3063 if (rc == NGX_OK) {
|
|
|
3064 r->headers_out.location = ho;
|
|
|
3065
|
|
|
3066 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3067 "rewritten location: \"%V\"", &ho->value);
|
|
|
3068 }
|
|
|
3069
|
|
|
3070 return rc;
|
|
|
3071 }
|
|
|
3072
|
|
348
|
3073 if (ho->value.data[0] != '/') {
|
|
|
3074 r->headers_out.location = ho;
|
|
|
3075 }
|
|
|
3076
|
|
58
|
3077 /*
|
|
|
3078 * we do not set r->headers_out.location here to avoid the handling
|
|
|
3079 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
3080 */
|
|
|
3081
|
|
|
3082 return NGX_OK;
|
|
|
3083 }
|
|
|
3084
|
|
|
3085
|
|
|
3086 static ngx_int_t
|
|
|
3087 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3088 ngx_uint_t offset)
|
|
|
3089 {
|
|
|
3090 u_char *p;
|
|
|
3091 ngx_int_t rc;
|
|
|
3092 ngx_table_elt_t *ho;
|
|
|
3093
|
|
|
3094 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3095 if (ho == NULL) {
|
|
|
3096 return NGX_ERROR;
|
|
|
3097 }
|
|
|
3098
|
|
|
3099 *ho = *h;
|
|
|
3100
|
|
|
3101 if (r->upstream->rewrite_redirect) {
|
|
|
3102
|
|
340
|
3103 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
3104
|
|
|
3105 if (p) {
|
|
|
3106 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
3107
|
|
|
3108 } else {
|
|
|
3109 return NGX_OK;
|
|
|
3110 }
|
|
|
3111
|
|
78
|
3112 if (rc == NGX_DECLINED) {
|
|
|
3113 return NGX_OK;
|
|
|
3114 }
|
|
|
3115
|
|
58
|
3116 if (rc == NGX_OK) {
|
|
348
|
3117 r->headers_out.refresh = ho;
|
|
|
3118
|
|
58
|
3119 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3120 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
3121 }
|
|
|
3122
|
|
|
3123 return rc;
|
|
|
3124 }
|
|
|
3125
|
|
348
|
3126 r->headers_out.refresh = ho;
|
|
|
3127
|
|
58
|
3128 return NGX_OK;
|
|
|
3129 }
|
|
|
3130
|
|
|
3131
|
|
464
|
3132 static ngx_int_t
|
|
|
3133 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
3134 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3135 {
|
|
|
3136 ngx_table_elt_t *ho;
|
|
|
3137
|
|
|
3138 #if (NGX_HTTP_CACHE)
|
|
|
3139
|
|
|
3140 if (r->cached) {
|
|
|
3141 r->allow_ranges = 1;
|
|
|
3142 return NGX_OK;
|
|
|
3143
|
|
|
3144 }
|
|
|
3145
|
|
|
3146 #endif
|
|
|
3147
|
|
|
3148 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3149 if (ho == NULL) {
|
|
|
3150 return NGX_ERROR;
|
|
|
3151 }
|
|
|
3152
|
|
|
3153 *ho = *h;
|
|
|
3154
|
|
|
3155 return NGX_OK;
|
|
|
3156 }
|
|
|
3157
|
|
|
3158
|
|
58
|
3159 #if (NGX_HTTP_GZIP)
|
|
|
3160
|
|
|
3161 static ngx_int_t
|
|
|
3162 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
3163 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3164 {
|
|
|
3165 ngx_table_elt_t *ho;
|
|
|
3166
|
|
|
3167 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3168 if (ho == NULL) {
|
|
|
3169 return NGX_ERROR;
|
|
|
3170 }
|
|
|
3171
|
|
|
3172 *ho = *h;
|
|
|
3173
|
|
|
3174 r->headers_out.content_encoding = ho;
|
|
|
3175
|
|
|
3176 return NGX_OK;
|
|
|
3177 }
|
|
|
3178
|
|
|
3179 #endif
|
|
|
3180
|
|
|
3181
|
|
36
|
3182 static ngx_int_t
|
|
122
|
3183 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
3184 {
|
|
260
|
3185 ngx_http_variable_t *var, *v;
|
|
28
|
3186
|
|
122
|
3187 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
3188 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
3189 if (var == NULL) {
|
|
|
3190 return NGX_ERROR;
|
|
|
3191 }
|
|
|
3192
|
|
186
|
3193 var->get_handler = v->get_handler;
|
|
122
|
3194 var->data = v->data;
|
|
|
3195 }
|
|
|
3196
|
|
28
|
3197 return NGX_OK;
|
|
|
3198 }
|
|
58
|
3199
|
|
|
3200
|
|
122
|
3201 static ngx_int_t
|
|
298
|
3202 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
3203 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3204 {
|
|
|
3205 u_char *p;
|
|
|
3206 size_t len;
|
|
|
3207 ngx_uint_t i;
|
|
|
3208 ngx_http_upstream_state_t *state;
|
|
|
3209
|
|
|
3210 v->valid = 1;
|
|
340
|
3211 v->no_cacheable = 0;
|
|
298
|
3212 v->not_found = 0;
|
|
|
3213
|
|
|
3214 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3215 v->not_found = 1;
|
|
|
3216 return NGX_OK;
|
|
|
3217 }
|
|
|
3218
|
|
|
3219 len = 0;
|
|
|
3220 state = r->upstream_states->elts;
|
|
|
3221
|
|
|
3222 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
3223 if (state[i].peer) {
|
|
|
3224 len += state[i].peer->len + 2;
|
|
|
3225
|
|
|
3226 } else {
|
|
|
3227 len += 3;
|
|
|
3228 }
|
|
|
3229 }
|
|
|
3230
|
|
382
|
3231 p = ngx_pnalloc(r->pool, len);
|
|
298
|
3232 if (p == NULL) {
|
|
|
3233 return NGX_ERROR;
|
|
|
3234 }
|
|
|
3235
|
|
|
3236 v->data = p;
|
|
|
3237
|
|
|
3238 i = 0;
|
|
|
3239
|
|
|
3240 for ( ;; ) {
|
|
|
3241 if (state[i].peer) {
|
|
|
3242 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3243 }
|
|
|
3244
|
|
|
3245 if (++i == r->upstream_states->nelts) {
|
|
|
3246 break;
|
|
|
3247 }
|
|
|
3248
|
|
|
3249 if (state[i].peer) {
|
|
|
3250 *p++ = ',';
|
|
|
3251 *p++ = ' ';
|
|
|
3252
|
|
|
3253 } else {
|
|
|
3254 *p++ = ' ';
|
|
|
3255 *p++ = ':';
|
|
|
3256 *p++ = ' ';
|
|
|
3257
|
|
|
3258 if (++i == r->upstream_states->nelts) {
|
|
|
3259 break;
|
|
|
3260 }
|
|
|
3261
|
|
|
3262 continue;
|
|
|
3263 }
|
|
|
3264 }
|
|
|
3265
|
|
|
3266 v->len = p - v->data;
|
|
|
3267
|
|
|
3268 return NGX_OK;
|
|
|
3269 }
|
|
|
3270
|
|
|
3271
|
|
|
3272 static ngx_int_t
|
|
122
|
3273 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3274 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3275 {
|
|
|
3276 u_char *p;
|
|
|
3277 size_t len;
|
|
|
3278 ngx_uint_t i;
|
|
|
3279 ngx_http_upstream_state_t *state;
|
|
|
3280
|
|
|
3281 v->valid = 1;
|
|
340
|
3282 v->no_cacheable = 0;
|
|
122
|
3283 v->not_found = 0;
|
|
|
3284
|
|
296
|
3285 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3286 v->not_found = 1;
|
|
|
3287 return NGX_OK;
|
|
|
3288 }
|
|
|
3289
|
|
296
|
3290 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3291
|
|
382
|
3292 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3293 if (p == NULL) {
|
|
|
3294 return NGX_ERROR;
|
|
|
3295 }
|
|
|
3296
|
|
|
3297 v->data = p;
|
|
|
3298
|
|
|
3299 i = 0;
|
|
296
|
3300 state = r->upstream_states->elts;
|
|
122
|
3301
|
|
|
3302 for ( ;; ) {
|
|
296
|
3303 if (state[i].status) {
|
|
|
3304 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3305
|
|
|
3306 } else {
|
|
296
|
3307 *p++ = '-';
|
|
122
|
3308 }
|
|
|
3309
|
|
296
|
3310 if (++i == r->upstream_states->nelts) {
|
|
122
|
3311 break;
|
|
|
3312 }
|
|
|
3313
|
|
296
|
3314 if (state[i].peer) {
|
|
|
3315 *p++ = ',';
|
|
|
3316 *p++ = ' ';
|
|
|
3317
|
|
|
3318 } else {
|
|
|
3319 *p++ = ' ';
|
|
|
3320 *p++ = ':';
|
|
|
3321 *p++ = ' ';
|
|
|
3322
|
|
|
3323 if (++i == r->upstream_states->nelts) {
|
|
|
3324 break;
|
|
|
3325 }
|
|
|
3326
|
|
|
3327 continue;
|
|
|
3328 }
|
|
122
|
3329 }
|
|
|
3330
|
|
|
3331 v->len = p - v->data;
|
|
|
3332
|
|
|
3333 return NGX_OK;
|
|
|
3334 }
|
|
|
3335
|
|
|
3336
|
|
|
3337 static ngx_int_t
|
|
|
3338 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3339 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3340 {
|
|
|
3341 u_char *p;
|
|
|
3342 size_t len;
|
|
|
3343 ngx_uint_t i;
|
|
262
|
3344 ngx_msec_int_t ms;
|
|
122
|
3345 ngx_http_upstream_state_t *state;
|
|
|
3346
|
|
|
3347 v->valid = 1;
|
|
340
|
3348 v->no_cacheable = 0;
|
|
122
|
3349 v->not_found = 0;
|
|
|
3350
|
|
296
|
3351 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3352 v->not_found = 1;
|
|
|
3353 return NGX_OK;
|
|
|
3354 }
|
|
|
3355
|
|
296
|
3356 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3357
|
|
382
|
3358 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3359 if (p == NULL) {
|
|
|
3360 return NGX_ERROR;
|
|
|
3361 }
|
|
|
3362
|
|
|
3363 v->data = p;
|
|
|
3364
|
|
|
3365 i = 0;
|
|
296
|
3366 state = r->upstream_states->elts;
|
|
122
|
3367
|
|
|
3368 for ( ;; ) {
|
|
296
|
3369 if (state[i].status) {
|
|
346
|
3370 ms = (ngx_msec_int_t)
|
|
|
3371 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3372 ms = (ms >= 0) ? ms : 0;
|
|
|
3373 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3374
|
|
|
3375 } else {
|
|
|
3376 *p++ = '-';
|
|
122
|
3377 }
|
|
|
3378
|
|
296
|
3379 if (++i == r->upstream_states->nelts) {
|
|
122
|
3380 break;
|
|
|
3381 }
|
|
|
3382
|
|
296
|
3383 if (state[i].peer) {
|
|
|
3384 *p++ = ',';
|
|
|
3385 *p++ = ' ';
|
|
|
3386
|
|
|
3387 } else {
|
|
|
3388 *p++ = ' ';
|
|
|
3389 *p++ = ':';
|
|
|
3390 *p++ = ' ';
|
|
|
3391
|
|
|
3392 if (++i == r->upstream_states->nelts) {
|
|
|
3393 break;
|
|
|
3394 }
|
|
|
3395
|
|
|
3396 continue;
|
|
|
3397 }
|
|
122
|
3398 }
|
|
|
3399
|
|
|
3400 v->len = p - v->data;
|
|
|
3401
|
|
|
3402 return NGX_OK;
|
|
|
3403 }
|
|
|
3404
|
|
|
3405
|
|
430
|
3406 static ngx_int_t
|
|
|
3407 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3408 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3409 {
|
|
|
3410 u_char *p;
|
|
|
3411 size_t len;
|
|
|
3412 ngx_uint_t i;
|
|
|
3413 ngx_http_upstream_state_t *state;
|
|
|
3414
|
|
|
3415 v->valid = 1;
|
|
|
3416 v->no_cacheable = 0;
|
|
|
3417 v->not_found = 0;
|
|
|
3418
|
|
|
3419 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3420 v->not_found = 1;
|
|
|
3421 return NGX_OK;
|
|
|
3422 }
|
|
|
3423
|
|
|
3424 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3425
|
|
|
3426 p = ngx_pnalloc(r->pool, len);
|
|
|
3427 if (p == NULL) {
|
|
|
3428 return NGX_ERROR;
|
|
|
3429 }
|
|
|
3430
|
|
|
3431 v->data = p;
|
|
|
3432
|
|
|
3433 i = 0;
|
|
|
3434 state = r->upstream_states->elts;
|
|
|
3435
|
|
|
3436 for ( ;; ) {
|
|
|
3437 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3438
|
|
|
3439 if (++i == r->upstream_states->nelts) {
|
|
|
3440 break;
|
|
|
3441 }
|
|
|
3442
|
|
|
3443 if (state[i].peer) {
|
|
|
3444 *p++ = ',';
|
|
|
3445 *p++ = ' ';
|
|
|
3446
|
|
|
3447 } else {
|
|
|
3448 *p++ = ' ';
|
|
|
3449 *p++ = ':';
|
|
|
3450 *p++ = ' ';
|
|
|
3451
|
|
|
3452 if (++i == r->upstream_states->nelts) {
|
|
|
3453 break;
|
|
|
3454 }
|
|
|
3455
|
|
|
3456 continue;
|
|
|
3457 }
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 v->len = p - v->data;
|
|
|
3461
|
|
|
3462 return NGX_OK;
|
|
|
3463 }
|
|
|
3464
|
|
|
3465
|
|
296
|
3466 ngx_int_t
|
|
|
3467 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3468 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3469 {
|
|
|
3470 if (r->upstream == NULL) {
|
|
|
3471 v->not_found = 1;
|
|
|
3472 return NGX_OK;
|
|
|
3473 }
|
|
|
3474
|
|
|
3475 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3476 &r->upstream->headers_in.headers.part,
|
|
|
3477 sizeof("upstream_http_") - 1);
|
|
|
3478 }
|
|
|
3479
|
|
|
3480
|
|
200
|
3481 static char *
|
|
|
3482 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3483 {
|
|
260
|
3484 char *rv;
|
|
|
3485 void *mconf;
|
|
|
3486 ngx_str_t *value;
|
|
|
3487 ngx_url_t u;
|
|
|
3488 ngx_uint_t m;
|
|
|
3489 ngx_conf_t pcf;
|
|
|
3490 ngx_http_module_t *module;
|
|
|
3491 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3492 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3493
|
|
|
3494 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3495
|
|
|
3496 value = cf->args->elts;
|
|
|
3497 u.host = value[1];
|
|
|
3498 u.no_resolve = 1;
|
|
|
3499
|
|
|
3500 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3501 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3502 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3503 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3504 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3505 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3506 if (uscf == NULL) {
|
|
|
3507 return NGX_CONF_ERROR;
|
|
|
3508 }
|
|
|
3509
|
|
200
|
3510
|
|
|
3511 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3512 if (ctx == NULL) {
|
|
|
3513 return NGX_CONF_ERROR;
|
|
|
3514 }
|
|
|
3515
|
|
260
|
3516 http_ctx = cf->ctx;
|
|
|
3517 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3518
|
|
|
3519 /* the upstream{}'s srv_conf */
|
|
|
3520
|
|
|
3521 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3522 if (ctx->srv_conf == NULL) {
|
|
|
3523 return NGX_CONF_ERROR;
|
|
|
3524 }
|
|
|
3525
|
|
|
3526 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3527
|
|
260
|
3528 uscf->srv_conf = ctx->srv_conf;
|
|
|
3529
|
|
200
|
3530
|
|
|
3531 /* the upstream{}'s loc_conf */
|
|
|
3532
|
|
|
3533 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3534 if (ctx->loc_conf == NULL) {
|
|
|
3535 return NGX_CONF_ERROR;
|
|
|
3536 }
|
|
|
3537
|
|
|
3538 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3539 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3540 continue;
|
|
|
3541 }
|
|
|
3542
|
|
|
3543 module = ngx_modules[m]->ctx;
|
|
|
3544
|
|
260
|
3545 if (module->create_srv_conf) {
|
|
|
3546 mconf = module->create_srv_conf(cf);
|
|
|
3547 if (mconf == NULL) {
|
|
|
3548 return NGX_CONF_ERROR;
|
|
|
3549 }
|
|
|
3550
|
|
|
3551 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3552 }
|
|
|
3553
|
|
200
|
3554 if (module->create_loc_conf) {
|
|
|
3555 mconf = module->create_loc_conf(cf);
|
|
|
3556 if (mconf == NULL) {
|
|
|
3557 return NGX_CONF_ERROR;
|
|
|
3558 }
|
|
|
3559
|
|
|
3560 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3561 }
|
|
|
3562 }
|
|
|
3563
|
|
|
3564
|
|
|
3565 /* parse inside upstream{} */
|
|
|
3566
|
|
|
3567 pcf = *cf;
|
|
|
3568 cf->ctx = ctx;
|
|
|
3569 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3570
|
|
|
3571 rv = ngx_conf_parse(cf, NULL);
|
|
|
3572
|
|
|
3573 *cf = pcf;
|
|
|
3574
|
|
|
3575 if (rv != NGX_CONF_OK) {
|
|
|
3576 return rv;
|
|
|
3577 }
|
|
|
3578
|
|
|
3579 if (uscf->servers == NULL) {
|
|
|
3580 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3581 "no servers are inside upstream");
|
|
|
3582 return NGX_CONF_ERROR;
|
|
|
3583 }
|
|
|
3584
|
|
|
3585 return rv;
|
|
|
3586 }
|
|
|
3587
|
|
|
3588
|
|
|
3589 static char *
|
|
|
3590 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3591 {
|
|
|
3592 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3593
|
|
260
|
3594 time_t fail_timeout;
|
|
|
3595 ngx_str_t *value, s;
|
|
|
3596 ngx_url_t u;
|
|
|
3597 ngx_int_t weight, max_fails;
|
|
|
3598 ngx_uint_t i;
|
|
|
3599 ngx_http_upstream_server_t *us;
|
|
200
|
3600
|
|
|
3601 if (uscf->servers == NULL) {
|
|
260
|
3602 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3603 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3604 if (uscf->servers == NULL) {
|
|
|
3605 return NGX_CONF_ERROR;
|
|
|
3606 }
|
|
|
3607 }
|
|
|
3608
|
|
260
|
3609 us = ngx_array_push(uscf->servers);
|
|
|
3610 if (us == NULL) {
|
|
200
|
3611 return NGX_CONF_ERROR;
|
|
|
3612 }
|
|
|
3613
|
|
260
|
3614 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3615
|
|
200
|
3616 value = cf->args->elts;
|
|
|
3617
|
|
|
3618 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3619
|
|
|
3620 u.url = value[1];
|
|
266
|
3621 u.default_port = 80;
|
|
200
|
3622
|
|
340
|
3623 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3624 if (u.err) {
|
|
|
3625 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3626 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3627 }
|
|
|
3628
|
|
|
3629 return NGX_CONF_ERROR;
|
|
|
3630 }
|
|
|
3631
|
|
212
|
3632 weight = 1;
|
|
260
|
3633 max_fails = 1;
|
|
|
3634 fail_timeout = 10;
|
|
|
3635
|
|
|
3636 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3637
|
|
|
3638 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3639
|
|
|
3640 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3641 goto invalid;
|
|
|
3642 }
|
|
|
3643
|
|
|
3644 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3645
|
|
|
3646 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3647 goto invalid;
|
|
|
3648 }
|
|
|
3649
|
|
260
|
3650 continue;
|
|
|
3651 }
|
|
|
3652
|
|
|
3653 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3654
|
|
|
3655 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3656 goto invalid;
|
|
|
3657 }
|
|
|
3658
|
|
|
3659 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3660
|
|
|
3661 if (max_fails == NGX_ERROR) {
|
|
|
3662 goto invalid;
|
|
|
3663 }
|
|
|
3664
|
|
|
3665 continue;
|
|
212
|
3666 }
|
|
260
|
3667
|
|
|
3668 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3669
|
|
|
3670 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3671 goto invalid;
|
|
|
3672 }
|
|
|
3673
|
|
|
3674 s.len = value[i].len - 13;
|
|
|
3675 s.data = &value[i].data[13];
|
|
|
3676
|
|
|
3677 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3678
|
|
372
|
3679 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3680 goto invalid;
|
|
|
3681 }
|
|
|
3682
|
|
|
3683 continue;
|
|
|
3684 }
|
|
|
3685
|
|
326
|
3686 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3687
|
|
|
3688 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3689 goto invalid;
|
|
|
3690 }
|
|
|
3691
|
|
|
3692 us->backup = 1;
|
|
|
3693
|
|
|
3694 continue;
|
|
|
3695 }
|
|
|
3696
|
|
260
|
3697 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3698
|
|
|
3699 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3700 goto invalid;
|
|
|
3701 }
|
|
|
3702
|
|
|
3703 us->down = 1;
|
|
|
3704
|
|
|
3705 continue;
|
|
|
3706 }
|
|
|
3707
|
|
|
3708 goto invalid;
|
|
212
|
3709 }
|
|
|
3710
|
|
260
|
3711 us->addrs = u.addrs;
|
|
|
3712 us->naddrs = u.naddrs;
|
|
|
3713 us->weight = weight;
|
|
|
3714 us->max_fails = max_fails;
|
|
|
3715 us->fail_timeout = fail_timeout;
|
|
200
|
3716
|
|
|
3717 return NGX_CONF_OK;
|
|
212
|
3718
|
|
|
3719 invalid:
|
|
|
3720
|
|
260
|
3721 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3722 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3723
|
|
|
3724 return NGX_CONF_ERROR;
|
|
200
|
3725 }
|
|
|
3726
|
|
|
3727
|
|
|
3728 ngx_http_upstream_srv_conf_t *
|
|
260
|
3729 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3730 {
|
|
|
3731 ngx_uint_t i;
|
|
260
|
3732 ngx_http_upstream_server_t *us;
|
|
200
|
3733 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3734 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3735
|
|
260
|
3736 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3737
|
|
340
|
3738 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3739 if (u->err) {
|
|
|
3740 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3741 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3742 }
|
|
|
3743
|
|
|
3744 return NULL;
|
|
|
3745 }
|
|
|
3746 }
|
|
|
3747
|
|
|
3748 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3749
|
|
|
3750 uscfp = umcf->upstreams.elts;
|
|
|
3751
|
|
|
3752 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3753
|
|
|
3754 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3755 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3756 != 0)
|
|
|
3757 {
|
|
200
|
3758 continue;
|
|
|
3759 }
|
|
|
3760
|
|
260
|
3761 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3762 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3763 {
|
|
260
|
3764 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3765 "duplicate upstream \"%V\"", &u->host);
|
|
|
3766 return NULL;
|
|
200
|
3767 }
|
|
260
|
3768
|
|
266
|
3769 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3770 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3771 "upstream \"%V\" may not have port %d",
|
|
|
3772 &u->host, u->port);
|
|
|
3773 return NULL;
|
|
|
3774 }
|
|
|
3775
|
|
|
3776 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3777 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3778 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3779 &u->host, uscfp[i]->port,
|
|
336
|
3780 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3781 return NULL;
|
|
|
3782 }
|
|
|
3783
|
|
|
3784 if (uscfp[i]->port != u->port) {
|
|
|
3785 continue;
|
|
260
|
3786 }
|
|
|
3787
|
|
324
|
3788 if (uscfp[i]->default_port && u->default_port
|
|
|
3789 && uscfp[i]->default_port != u->default_port)
|
|
|
3790 {
|
|
|
3791 continue;
|
|
|
3792 }
|
|
|
3793
|
|
260
|
3794 return uscfp[i];
|
|
200
|
3795 }
|
|
|
3796
|
|
|
3797 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3798 if (uscf == NULL) {
|
|
|
3799 return NULL;
|
|
|
3800 }
|
|
|
3801
|
|
260
|
3802 uscf->flags = flags;
|
|
200
|
3803 uscf->host = u->host;
|
|
336
|
3804 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3805 uscf->line = cf->conf_file->line;
|
|
266
|
3806 uscf->port = u->port;
|
|
|
3807 uscf->default_port = u->default_port;
|
|
260
|
3808
|
|
|
3809 if (u->naddrs == 1) {
|
|
|
3810 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3811 sizeof(ngx_http_upstream_server_t));
|
|
|
3812 if (uscf->servers == NULL) {
|
|
|
3813 return NGX_CONF_ERROR;
|
|
|
3814 }
|
|
|
3815
|
|
|
3816 us = ngx_array_push(uscf->servers);
|
|
|
3817 if (us == NULL) {
|
|
|
3818 return NGX_CONF_ERROR;
|
|
|
3819 }
|
|
|
3820
|
|
|
3821 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3822
|
|
|
3823 us->addrs = u->addrs;
|
|
|
3824 us->naddrs = u->naddrs;
|
|
|
3825 }
|
|
200
|
3826
|
|
|
3827 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3828 if (uscfp == NULL) {
|
|
|
3829 return NULL;
|
|
|
3830 }
|
|
|
3831
|
|
|
3832 *uscfp = uscf;
|
|
|
3833
|
|
|
3834 return uscf;
|
|
|
3835 }
|
|
|
3836
|
|
|
3837
|
|
356
|
3838 ngx_int_t
|
|
|
3839 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3840 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3841 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3842 {
|
|
|
3843 ngx_str_t *h;
|
|
|
3844 ngx_uint_t i, j;
|
|
|
3845 ngx_array_t hide_headers;
|
|
|
3846 ngx_hash_key_t *hk;
|
|
|
3847
|
|
|
3848 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3849 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3850 {
|
|
|
3851 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3852
|
|
|
3853 if (conf->hide_headers_hash.buckets) {
|
|
|
3854 return NGX_OK;
|
|
|
3855 }
|
|
|
3856
|
|
|
3857 conf->hide_headers = prev->hide_headers;
|
|
|
3858 conf->pass_headers = prev->pass_headers;
|
|
|
3859
|
|
|
3860 } else {
|
|
|
3861 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3862 conf->hide_headers = prev->hide_headers;
|
|
|
3863 }
|
|
|
3864
|
|
|
3865 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3866 conf->pass_headers = prev->pass_headers;
|
|
|
3867 }
|
|
|
3868 }
|
|
|
3869
|
|
|
3870 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3871 != NGX_OK)
|
|
|
3872 {
|
|
|
3873 return NGX_ERROR;
|
|
|
3874 }
|
|
|
3875
|
|
|
3876 for (h = default_hide_headers; h->len; h++) {
|
|
|
3877 hk = ngx_array_push(&hide_headers);
|
|
|
3878 if (hk == NULL) {
|
|
|
3879 return NGX_ERROR;
|
|
|
3880 }
|
|
|
3881
|
|
|
3882 hk->key = *h;
|
|
|
3883 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3884 hk->value = (void *) 1;
|
|
|
3885 }
|
|
|
3886
|
|
|
3887 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3888
|
|
|
3889 h = conf->hide_headers->elts;
|
|
|
3890
|
|
|
3891 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3892
|
|
|
3893 hk = hide_headers.elts;
|
|
|
3894
|
|
|
3895 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3896 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3897 goto exist;
|
|
|
3898 }
|
|
|
3899 }
|
|
|
3900
|
|
|
3901 hk = ngx_array_push(&hide_headers);
|
|
|
3902 if (hk == NULL) {
|
|
|
3903 return NGX_ERROR;
|
|
|
3904 }
|
|
|
3905
|
|
|
3906 hk->key = h[i];
|
|
|
3907 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3908 hk->value = (void *) 1;
|
|
|
3909
|
|
|
3910 exist:
|
|
|
3911
|
|
|
3912 continue;
|
|
|
3913 }
|
|
|
3914 }
|
|
|
3915
|
|
|
3916 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3917
|
|
|
3918 h = conf->pass_headers->elts;
|
|
|
3919 hk = hide_headers.elts;
|
|
|
3920
|
|
|
3921 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3922 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3923
|
|
|
3924 if (hk[j].key.data == NULL) {
|
|
|
3925 continue;
|
|
|
3926 }
|
|
|
3927
|
|
|
3928 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3929 hk[j].key.data = NULL;
|
|
|
3930 break;
|
|
|
3931 }
|
|
|
3932 }
|
|
|
3933 }
|
|
|
3934 }
|
|
|
3935
|
|
|
3936 hash->hash = &conf->hide_headers_hash;
|
|
|
3937 hash->key = ngx_hash_key_lc;
|
|
|
3938 hash->pool = cf->pool;
|
|
|
3939 hash->temp_pool = NULL;
|
|
|
3940
|
|
|
3941 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3942 }
|
|
|
3943
|
|
|
3944
|
|
58
|
3945 static void *
|
|
|
3946 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3947 {
|
|
|
3948 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3949
|
|
|
3950 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3951 if (umcf == NULL) {
|
|
|
3952 return NULL;
|
|
|
3953 }
|
|
|
3954
|
|
200
|
3955 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3956 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3957 != NGX_OK)
|
|
|
3958 {
|
|
|
3959 return NGX_CONF_ERROR;
|
|
|
3960 }
|
|
|
3961
|
|
58
|
3962 return umcf;
|
|
|
3963 }
|
|
|
3964
|
|
|
3965
|
|
|
3966 static char *
|
|
200
|
3967 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3968 {
|
|
|
3969 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3970
|
|
200
|
3971 ngx_uint_t i;
|
|
|
3972 ngx_array_t headers_in;
|
|
|
3973 ngx_hash_key_t *hk;
|
|
|
3974 ngx_hash_init_t hash;
|
|
260
|
3975 ngx_http_upstream_init_pt init;
|
|
200
|
3976 ngx_http_upstream_header_t *header;
|
|
|
3977 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3978
|
|
|
3979 uscfp = umcf->upstreams.elts;
|
|
|
3980
|
|
|
3981 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3982
|
|
|
3983 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3984 ngx_http_upstream_init_round_robin;
|
|
|
3985
|
|
|
3986 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3987 return NGX_CONF_ERROR;
|
|
|
3988 }
|
|
|
3989 }
|
|
198
|
3990
|
|
212
|
3991
|
|
260
|
3992 /* upstream_headers_in_hash */
|
|
|
3993
|
|
198
|
3994 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3995 != NGX_OK)
|
|
58
|
3996 {
|
|
|
3997 return NGX_CONF_ERROR;
|
|
|
3998 }
|
|
|
3999
|
|
198
|
4000 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
4001 hk = ngx_array_push(&headers_in);
|
|
|
4002 if (hk == NULL) {
|
|
|
4003 return NGX_CONF_ERROR;
|
|
|
4004 }
|
|
|
4005
|
|
|
4006 hk->key = header->name;
|
|
|
4007 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
4008 hk->value = header;
|
|
|
4009 }
|
|
|
4010
|
|
|
4011 hash.hash = &umcf->headers_in_hash;
|
|
|
4012 hash.key = ngx_hash_key_lc;
|
|
|
4013 hash.max_size = 512;
|
|
244
|
4014 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
4015 hash.name = "upstream_headers_in_hash";
|
|
|
4016 hash.pool = cf->pool;
|
|
|
4017 hash.temp_pool = NULL;
|
|
|
4018
|
|
|
4019 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
4020 return NGX_CONF_ERROR;
|
|
|
4021 }
|
|
58
|
4022
|
|
|
4023 return NGX_CONF_OK;
|
|
|
4024 }
|
