Mercurial > hg > nginx
annotate src/http/ngx_http_write_filter_module.c @ 509:9b8c906f6e63 release-0.1.29
nginx-0.1.29-RELEASE import
*) 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; the bug had 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 <igor@sysoev.ru> |
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date | Thu, 12 May 2005 14:58:06 +0000 |
parents | cd3117ad9aab |
children | c12967aadd87 |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_http.h> |
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13 static ngx_int_t ngx_http_write_filter_init(ngx_cycle_t *cycle); |
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16 ngx_http_module_t ngx_http_write_filter_module_ctx = { |
509 | 17 NULL, /* preconfiguration */ |
18 NULL, /* postconfiguration */ | |
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20 NULL, /* create main configuration */ |
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21 NULL, /* init main configuration */ |
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23 NULL, /* create server configuration */ |
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24 NULL, /* merge server configuration */ |
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26 NULL, /* create location configuration */ |
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27 NULL, /* merge location configuration */ |
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28 }; |
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31 ngx_module_t ngx_http_write_filter_module = { |
509 | 32 NGX_MODULE_V1, |
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33 &ngx_http_write_filter_module_ctx, /* module context */ |
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34 NULL, /* module directives */ |
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35 NGX_HTTP_MODULE, /* module type */ |
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36 ngx_http_write_filter_init, /* init module */ |
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37 NULL /* init process */ |
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38 }; |
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39 |
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40 |
501 | 41 ngx_int_t |
42 ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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43 { |
509 | 44 off_t size, sent; |
45 ngx_uint_t last, flush; | |
46 ngx_chain_t *cl, *ln, **ll, *chain; | |
47 ngx_connection_t *c; | |
48 ngx_http_core_loc_conf_t *clcf; | |
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49 |
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50 size = 0; |
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51 flush = 0; |
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52 last = 0; |
509 | 53 ll = &r->out; |
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54 |
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55 /* find the size, the flush point and the last link of the saved chain */ |
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56 |
509 | 57 for (cl = r->out; cl; cl = cl->next) { |
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58 ll = &cl->next; |
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59 |
479 | 60 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, |
61 "write old buf t:%d f:%d %p, pos %p, size: %z " | |
62 "file: %O, size: %z", | |
63 cl->buf->temporary, cl->buf->in_file, | |
64 cl->buf->start, cl->buf->pos, | |
65 cl->buf->last - cl->buf->pos, | |
66 cl->buf->file_pos, | |
67 cl->buf->file_last - cl->buf->file_pos); | |
68 | |
461 | 69 #if 1 |
70 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
479 | 71 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
483 | 72 "zero size buf in writer " |
73 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
74 cl->buf->temporary, | |
75 cl->buf->recycled, | |
76 cl->buf->in_file, | |
77 cl->buf->start, | |
78 cl->buf->pos, | |
79 cl->buf->last, | |
80 cl->buf->file, | |
81 cl->buf->file_pos, | |
82 cl->buf->file_last); | |
83 | |
461 | 84 ngx_debug_point(); |
489 | 85 return NGX_ERROR; |
461 | 86 } |
87 #endif | |
88 | |
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89 size += ngx_buf_size(cl->buf); |
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91 if (cl->buf->flush || cl->buf->recycled) { |
499 | 92 flush = 1; |
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93 } |
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94 |
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95 if (cl->buf->last_buf) { |
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96 last = 1; |
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97 } |
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98 } |
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100 /* add the new chain to the existent one */ |
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101 |
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102 for (ln = in; ln; ln = ln->next) { |
501 | 103 cl = ngx_alloc_chain_link(r->pool); |
104 if (cl == NULL) { | |
461 | 105 return NGX_ERROR; |
106 } | |
107 | |
108 cl->buf = ln->buf; | |
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109 *ll = cl; |
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110 ll = &cl->next; |
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111 |
479 | 112 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, |
113 "write new buf t:%d f:%d %p, pos %p, size: %z " | |
114 "file: %O, size: %z", | |
115 cl->buf->temporary, cl->buf->in_file, | |
116 cl->buf->start, cl->buf->pos, | |
117 cl->buf->last - cl->buf->pos, | |
118 cl->buf->file_pos, | |
119 cl->buf->file_last - cl->buf->file_pos); | |
120 | |
461 | 121 #if 1 |
122 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
479 | 123 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
483 | 124 "zero size buf in writer " |
125 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
126 cl->buf->temporary, | |
127 cl->buf->recycled, | |
128 cl->buf->in_file, | |
129 cl->buf->start, | |
130 cl->buf->pos, | |
131 cl->buf->last, | |
132 cl->buf->file, | |
133 cl->buf->file_pos, | |
134 cl->buf->file_last); | |
135 | |
461 | 136 ngx_debug_point(); |
489 | 137 return NGX_ERROR; |
461 | 138 } |
139 #endif | |
140 | |
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141 size += ngx_buf_size(cl->buf); |
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142 |
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143 if (cl->buf->flush || cl->buf->recycled) { |
499 | 144 flush = 1; |
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145 } |
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146 |
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147 if (cl->buf->last_buf) { |
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148 last = 1; |
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149 } |
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150 } |
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151 |
461 | 152 *ll = NULL; |
153 | |
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154 c = r->connection; |
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155 |
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nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
156 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
499 | 157 "http write filter: l:%d f:%d s:%O", last, flush, size); |
26
53cb81681040
nginx-0.0.1-2002-12-15-09:25:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
24
diff
changeset
|
158 |
509 | 159 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
154
eac26585476e
nginx-0.0.1-2003-10-22-11:05:29 import
Igor Sysoev <igor@sysoev.ru>
parents:
153
diff
changeset
|
160 |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
119
diff
changeset
|
161 /* |
509 | 162 * avoid the output if there are no last buf, no flush point, |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
163 * there are the incoming bufs and the size of all bufs |
332
159dd60d257a
nginx-0.0.3-2004-05-10-23:53:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
319
diff
changeset
|
164 * is smaller than "postpone_output" directive |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
119
diff
changeset
|
165 */ |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
166 |
499 | 167 if (!last && !flush && in && size < (off_t) clcf->postpone_output) { |
4
c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
168 return NGX_OK; |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
169 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
170 |
509 | 171 /* |
172 * avoid the output if there are no incoming bufs but there are | |
173 * the postponed requests or data | |
174 */ | |
175 | |
176 if (in == NULL && r->postponed) { | |
177 return NGX_OK; | |
178 } | |
179 | |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
180 if (c->write->delayed) { |
77
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
181 return NGX_AGAIN; |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
182 } |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
183 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
184 if (size == 0 && !c->buffered) { |
483 | 185 if (last) { |
509 | 186 r->out = NULL; |
483 | 187 return NGX_OK; |
188 } | |
461 | 189 |
499 | 190 if (flush) { |
501 | 191 do { |
509 | 192 r->out = r->out->next; |
501 | 193 } |
509 | 194 while (r->out); |
501 | 195 |
499 | 196 return NGX_OK; |
197 } | |
198 | |
483 | 199 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
200 "the http output chain is empty"); | |
461 | 201 |
483 | 202 ngx_debug_point(); |
203 | |
204 return NGX_ERROR; | |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
205 } |
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
206 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
207 sent = c->sent; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
changeset
|
208 |
509 | 209 chain = c->send_chain(c, r->out, clcf->limit_rate); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
210 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
211 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
461 | 212 "http write filter %p", chain); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
213 |
391
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
363
diff
changeset
|
214 if (clcf->limit_rate) { |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
215 sent = c->sent - sent; |
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
216 c->write->delayed = 1; |
363
f2755a2885c8
nginx-0.0.7-2004-06-21-23:22:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
362
diff
changeset
|
217 ngx_add_timer(r->connection->write, |
391
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
363
diff
changeset
|
218 (ngx_msec_t) (sent * 1000 / clcf->limit_rate)); |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
219 } |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
changeset
|
220 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
221 if (chain == NGX_CHAIN_ERROR) { |
4
c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
222 return NGX_ERROR; |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
223 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
224 |
509 | 225 for (cl = r->out; cl && cl != chain; /* void */) { |
507 | 226 ln = cl; |
227 cl = cl->next; | |
228 ngx_free_chain(r->pool, ln); | |
229 } | |
230 | |
509 | 231 r->out = chain; |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
232 |
483 | 233 if (chain || (last && c->buffered)) { |
395
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
234 return NGX_AGAIN; |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
235 } |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
236 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
237 return NGX_OK; |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
238 } |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
239 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
240 |
501 | 241 static ngx_int_t |
242 ngx_http_write_filter_init(ngx_cycle_t *cycle) | |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
243 { |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
244 ngx_http_top_body_filter = ngx_http_write_filter; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
245 |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
246 return NGX_OK; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
247 } |