annotate src/http/ngx_http_postpone_filter_module.c @ 58:b55cbf18157e NGINX_0_1_29

nginx 0.1.29 *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; bug appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.
author Igor Sysoev <http://sysoev.ru>
date Thu, 12 May 2005 00:00:00 +0400
parents
children 0790a8599248
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
58
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
1
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
2 /*
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
3 * Copyright (C) Igor Sysoev
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
4 */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
5
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
6
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
7 #include <ngx_config.h>
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
8 #include <ngx_core.h>
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
9 #include <ngx_http.h>
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
10
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
11
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
12 static ngx_int_t ngx_http_postpone_filter_init(ngx_cycle_t *cycle);
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
13
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
14
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
15 static ngx_http_module_t ngx_http_postpone_filter_module_ctx = {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
16 NULL, /* preconfiguration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
17 NULL, /* postconfiguration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
18
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
19 NULL, /* create main configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
20 NULL, /* init main configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
21
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
22 NULL, /* create server configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
23 NULL, /* merge server configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
24
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
25 NULL, /* create location configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
26 NULL /* merge location configuration */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
27 };
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
28
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
29
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
30 ngx_module_t ngx_http_postpone_filter_module = {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
31 NGX_MODULE_V1,
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
32 &ngx_http_postpone_filter_module_ctx, /* module context */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
33 NULL, /* module directives */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
34 NGX_HTTP_MODULE, /* module type */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
35 ngx_http_postpone_filter_init, /* init module */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
36 NULL /* init process */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
37 };
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
38
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
39
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
40 static ngx_http_output_body_filter_pt ngx_http_next_filter;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
41
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
42
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
43 static ngx_int_t
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
44 ngx_http_postpone_filter(ngx_http_request_t *r, ngx_chain_t *in)
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
45 {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
46 ngx_int_t rc;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
47 ngx_chain_t *out;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
48 ngx_http_postponed_request_t *pr, **ppr;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
49
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
50 if (r->connection->write->error) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
51 return NGX_ERROR;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
52 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
53
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
54 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
55 "http postpone filter \"%V\" %p", &r->uri, in);
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
56
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
57 if (r != r->connection->data || (r->postponed && in)) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
58
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
59 if (r->postponed) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
60 for (pr = r->postponed; pr->next; pr = pr->next) { /* void */ }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
61
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
62 ppr = pr->request ? &pr->next : NULL;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
63
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
64 } else {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
65 ppr = &r->postponed;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
66 #if (NGX_SUPPRESS_WARN)
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
67 pr = NULL;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
68 #endif
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
69 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
70
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
71 if (ppr) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
72 pr = ngx_palloc(r->pool, sizeof(ngx_http_postponed_request_t));
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
73 if (pr == NULL) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
74 return NGX_ERROR;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
75 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
76
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
77 *ppr = pr;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
78
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
79 pr->request = NULL;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
80 pr->out = NULL;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
81 pr->next = NULL;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
82 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
83
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
84 if (ngx_chain_add_copy(r->pool, &pr->out, in) == NGX_ERROR) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
85 return NGX_ERROR;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
86 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
87
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
88 if (r != r->connection->data || r->postponed->request) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
89 return NGX_AGAIN;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
90 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
91 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
92
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
93 if (r->postponed) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
94 out = r->postponed->out;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
95 r->postponed = r->postponed->next;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
96
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
97 } else {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
98 out = in;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
99 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
100
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
101 if (out == NULL && r->out == NULL) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
102 return NGX_OK;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
103 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
104
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
105 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
106 "http postpone filter out \"%V\"", &r->uri);
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
107
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
108 rc = ngx_http_next_filter(r->main ? r->main : r, out);
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
109
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
110 if (rc == NGX_ERROR) {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
111 /* NGX_ERROR may be returned by any filter */
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
112 r->connection->write->error = 1;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
113 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
114
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
115 return rc;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
116 }
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
117
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
118
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
119 static ngx_int_t
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
120 ngx_http_postpone_filter_init(ngx_cycle_t *cycle)
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
121 {
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
122 ngx_http_next_filter = ngx_http_top_body_filter;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
123 ngx_http_top_body_filter = ngx_http_postpone_filter;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
124
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
125 return NGX_OK;
b55cbf18157e nginx 0.1.29
Igor Sysoev <http://sysoev.ru>
parents:
diff changeset
126 }