Mercurial > hg > nginx-quic
annotate src/http/ngx_http_write_filter.c @ 500:9a0f304470f5
release-0.1.24 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 04 Mar 2005 14:06:57 +0000 |
parents | 64d9afb209da |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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6 |
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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> |
43
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13 typedef struct { |
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14 ngx_chain_t *out; |
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15 } ngx_http_write_filter_ctx_t; |
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16 |
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18 static ngx_int_t ngx_http_write_filter_init(ngx_cycle_t *cycle); |
10
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19 |
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21 ngx_http_module_t ngx_http_write_filter_module_ctx = { |
177
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22 NULL, /* pre conf */ |
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23 |
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24 NULL, /* create main configuration */ |
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25 NULL, /* init main configuration */ |
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26 |
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27 NULL, /* create server configuration */ |
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28 NULL, /* merge server configuration */ |
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29 |
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30 NULL, /* create location configuration */ |
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31 NULL, /* merge location configuration */ |
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32 }; |
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33 |
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34 |
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35 ngx_module_t ngx_http_write_filter_module = { |
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36 NGX_MODULE, |
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37 &ngx_http_write_filter_module_ctx, /* module context */ |
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38 NULL, /* module directives */ |
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39 NGX_HTTP_MODULE, /* module type */ |
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40 ngx_http_write_filter_init, /* init module */ |
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41 NULL /* init process */ |
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42 }; |
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43 |
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45 ngx_int_t ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) |
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46 { |
499 | 47 off_t size, sent; |
48 ngx_uint_t last, flush; | |
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49 ngx_chain_t *cl, *ln, **ll, *chain; |
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50 ngx_connection_t *c; |
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51 ngx_http_core_loc_conf_t *clcf; |
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52 ngx_http_write_filter_ctx_t *ctx; |
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53 |
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54 ctx = ngx_http_get_module_ctx(r->main ? r->main : r, |
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55 ngx_http_write_filter_module); |
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56 |
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57 if (ctx == NULL) { |
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58 ngx_http_create_ctx(r, ctx, ngx_http_write_filter_module, |
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59 sizeof(ngx_http_write_filter_ctx_t), NGX_ERROR); |
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60 } |
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61 |
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62 size = 0; |
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63 flush = 0; |
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64 last = 0; |
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65 ll = &ctx->out; |
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66 |
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67 /* find the size, the flush point and the last link of the saved chain */ |
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68 |
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69 for (cl = ctx->out; cl; cl = cl->next) { |
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70 ll = &cl->next; |
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71 |
479 | 72 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, |
73 "write old buf t:%d f:%d %p, pos %p, size: %z " | |
74 "file: %O, size: %z", | |
75 cl->buf->temporary, cl->buf->in_file, | |
76 cl->buf->start, cl->buf->pos, | |
77 cl->buf->last - cl->buf->pos, | |
78 cl->buf->file_pos, | |
79 cl->buf->file_last - cl->buf->file_pos); | |
80 | |
461 | 81 #if 1 |
82 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
479 | 83 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
483 | 84 "zero size buf in writer " |
85 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
86 cl->buf->temporary, | |
87 cl->buf->recycled, | |
88 cl->buf->in_file, | |
89 cl->buf->start, | |
90 cl->buf->pos, | |
91 cl->buf->last, | |
92 cl->buf->file, | |
93 cl->buf->file_pos, | |
94 cl->buf->file_last); | |
95 | |
461 | 96 ngx_debug_point(); |
489 | 97 return NGX_ERROR; |
461 | 98 } |
99 #endif | |
100 | |
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101 size += ngx_buf_size(cl->buf); |
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102 |
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103 if (cl->buf->flush || cl->buf->recycled) { |
499 | 104 flush = 1; |
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105 } |
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106 |
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107 if (cl->buf->last_buf) { |
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108 last = 1; |
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109 } |
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110 } |
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111 |
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112 /* add the new chain to the existent one */ |
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113 |
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114 for (ln = in; ln; ln = ln->next) { |
461 | 115 if (!(cl = ngx_alloc_chain_link(r->pool))) { |
116 return NGX_ERROR; | |
117 } | |
118 | |
119 cl->buf = ln->buf; | |
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120 *ll = cl; |
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121 ll = &cl->next; |
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122 |
479 | 123 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, |
124 "write new buf t:%d f:%d %p, pos %p, size: %z " | |
125 "file: %O, size: %z", | |
126 cl->buf->temporary, cl->buf->in_file, | |
127 cl->buf->start, cl->buf->pos, | |
128 cl->buf->last - cl->buf->pos, | |
129 cl->buf->file_pos, | |
130 cl->buf->file_last - cl->buf->file_pos); | |
131 | |
461 | 132 #if 1 |
133 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
479 | 134 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
483 | 135 "zero size buf in writer " |
136 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
137 cl->buf->temporary, | |
138 cl->buf->recycled, | |
139 cl->buf->in_file, | |
140 cl->buf->start, | |
141 cl->buf->pos, | |
142 cl->buf->last, | |
143 cl->buf->file, | |
144 cl->buf->file_pos, | |
145 cl->buf->file_last); | |
146 | |
461 | 147 ngx_debug_point(); |
489 | 148 return NGX_ERROR; |
461 | 149 } |
150 #endif | |
151 | |
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152 size += ngx_buf_size(cl->buf); |
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153 |
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154 if (cl->buf->flush || cl->buf->recycled) { |
499 | 155 flush = 1; |
153
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nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
156 } |
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
157 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
333
diff
changeset
|
158 if (cl->buf->last_buf) { |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
159 last = 1; |
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
160 } |
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
161 } |
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
162 |
461 | 163 *ll = NULL; |
164 | |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
165 c = r->connection; |
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
166 |
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
167 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
499 | 168 "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
|
169 |
391
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
363
diff
changeset
|
170 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r, |
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
363
diff
changeset
|
171 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
|
172 |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
119
diff
changeset
|
173 /* |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
174 * avoid the output if there is no last buf, no flush point, |
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
175 * 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
|
176 * 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
|
177 */ |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
178 |
499 | 179 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
|
180 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
|
181 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
182 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
183 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
|
184 return NGX_AGAIN; |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
185 } |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
186 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
187 if (size == 0 && !c->buffered) { |
483 | 188 if (last) { |
189 return NGX_OK; | |
190 } | |
461 | 191 |
499 | 192 if (flush) { |
193 while ((ctx->out = ctx->out->next)) { /* void */ } | |
194 return NGX_OK; | |
195 } | |
196 | |
483 | 197 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
198 "the http output chain is empty"); | |
461 | 199 |
483 | 200 ngx_debug_point(); |
201 | |
202 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
|
203 } |
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
204 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
205 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
|
206 |
473 | 207 chain = c->send_chain(c, ctx->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
|
208 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
209 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
461 | 210 "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
|
211 |
391
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
363
diff
changeset
|
212 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
|
213 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
|
214 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
|
215 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
|
216 (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
|
217 } |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
changeset
|
218 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
219 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
|
220 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
|
221 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
222 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
223 ctx->out = chain; |
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
224 |
483 | 225 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
|
226 return NGX_AGAIN; |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
227 } |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
228 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
229 return NGX_OK; |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
230 } |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
231 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
232 |
356
2e3cbc1bbe3c
nginx-0.0.7-2004-06-16-19:32:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
233 static ngx_int_t 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
|
234 { |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
235 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
|
236 |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
237 return NGX_OK; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
238 } |