Mercurial > hg > nginx-quic
annotate src/http/ngx_http_write_filter_module.c @ 588:0a2c30f516e6
release-0.3.15 tag
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 07 Dec 2005 14:51:31 +0000 |
parents | 4e296b7d25bf |
children | 9262f520ce21 |
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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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); |
10
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16 ngx_http_module_t ngx_http_write_filter_module_ctx = { |
509 | 17 NULL, /* preconfiguration */ |
18 NULL, /* postconfiguration */ | |
177
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19 |
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20 NULL, /* create main configuration */ |
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21 NULL, /* init main configuration */ |
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22 |
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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 */ |
541 | 36 NULL, /* init master */ |
110
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37 ngx_http_write_filter_init, /* init module */ |
541 | 38 NULL, /* init process */ |
39 NULL, /* init thread */ | |
40 NULL, /* exit thread */ | |
41 NULL, /* exit process */ | |
42 NULL, /* exit master */ | |
43 NGX_MODULE_V1_PADDING | |
41
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44 }; |
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45 |
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46 |
501 | 47 ngx_int_t |
48 ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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49 { |
509 | 50 off_t size, sent; |
51 ngx_uint_t last, flush; | |
52 ngx_chain_t *cl, *ln, **ll, *chain; | |
53 ngx_connection_t *c; | |
54 ngx_http_core_loc_conf_t *clcf; | |
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55 |
527 | 56 c = r->connection; |
57 | |
583 | 58 if (c->error) { |
527 | 59 return NGX_ERROR; |
60 } | |
61 | |
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62 size = 0; |
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63 flush = 0; |
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64 last = 0; |
509 | 65 ll = &r->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 */ |
71
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68 |
509 | 69 for (cl = r->out; cl; cl = cl->next) { |
155
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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) { |
501 | 115 cl = ngx_alloc_chain_link(r->pool); |
116 if (cl == NULL) { | |
461 | 117 return NGX_ERROR; |
118 } | |
119 | |
120 cl->buf = ln->buf; | |
155
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121 *ll = cl; |
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122 ll = &cl->next; |
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123 |
479 | 124 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, |
125 "write new buf t:%d f:%d %p, pos %p, size: %z " | |
126 "file: %O, size: %z", | |
127 cl->buf->temporary, cl->buf->in_file, | |
128 cl->buf->start, cl->buf->pos, | |
129 cl->buf->last - cl->buf->pos, | |
130 cl->buf->file_pos, | |
131 cl->buf->file_last - cl->buf->file_pos); | |
132 | |
461 | 133 #if 1 |
134 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
479 | 135 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
483 | 136 "zero size buf in writer " |
137 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
138 cl->buf->temporary, | |
139 cl->buf->recycled, | |
140 cl->buf->in_file, | |
141 cl->buf->start, | |
142 cl->buf->pos, | |
143 cl->buf->last, | |
144 cl->buf->file, | |
145 cl->buf->file_pos, | |
146 cl->buf->file_last); | |
147 | |
461 | 148 ngx_debug_point(); |
489 | 149 return NGX_ERROR; |
461 | 150 } |
151 #endif | |
152 | |
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153 size += ngx_buf_size(cl->buf); |
153
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154 |
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155 if (cl->buf->flush || cl->buf->recycled) { |
499 | 156 flush = 1; |
153
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157 } |
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158 |
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159 if (cl->buf->last_buf) { |
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160 last = 1; |
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161 } |
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162 } |
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163 |
461 | 164 *ll = NULL; |
165 | |
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166 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
499 | 167 "http write filter: l:%d f:%d s:%O", last, flush, size); |
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168 |
509 | 169 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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170 |
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171 /* |
509 | 172 * avoid the output if there are no last buf, no flush point, |
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173 * there are the incoming bufs and the size of all bufs |
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174 * is smaller than "postpone_output" directive |
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175 */ |
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176 |
499 | 177 if (!last && !flush && in && size < (off_t) clcf->postpone_output) { |
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178 return NGX_OK; |
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179 } |
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180 |
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181 if (c->write->delayed) { |
77
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
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75
diff
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182 return NGX_AGAIN; |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
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183 } |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
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184 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
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185 if (size == 0 && !c->buffered) { |
483 | 186 if (last) { |
509 | 187 r->out = NULL; |
483 | 188 return NGX_OK; |
189 } | |
461 | 190 |
499 | 191 if (flush) { |
501 | 192 do { |
509 | 193 r->out = r->out->next; |
501 | 194 } |
509 | 195 while (r->out); |
501 | 196 |
499 | 197 return NGX_OK; |
198 } | |
199 | |
483 | 200 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
201 "the http output chain is empty"); | |
461 | 202 |
483 | 203 ngx_debug_point(); |
204 | |
205 return NGX_ERROR; | |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
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206 } |
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
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207 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
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208 sent = c->sent; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
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209 |
527 | 210 chain = c->send_chain(c, r->out, r->limit_rate); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
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211 |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
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212 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
461 | 213 "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
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214 |
527 | 215 if (r->limit_rate) { |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
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216 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
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217 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
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218 ngx_add_timer(r->connection->write, |
527 | 219 (ngx_msec_t) (sent * 1000 / r->limit_rate)); |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
220 } |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
changeset
|
221 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
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222 if (chain == NGX_CHAIN_ERROR) { |
583 | 223 c->error = 1; |
4
c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
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224 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
|
225 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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226 |
509 | 227 for (cl = r->out; cl && cl != chain; /* void */) { |
507 | 228 ln = cl; |
229 cl = cl->next; | |
230 ngx_free_chain(r->pool, ln); | |
231 } | |
232 | |
509 | 233 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
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234 |
541 | 235 if (chain || (c->buffered && r->postponed == NULL)) { |
395
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
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236 return NGX_AGAIN; |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
237 } |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
238 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
239 return NGX_OK; |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
240 } |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
241 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
242 |
501 | 243 static ngx_int_t |
244 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
|
245 { |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
246 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
|
247 |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
248 return NGX_OK; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
249 } |