Mercurial > hg > nginx
annotate src/http/ngx_http_write_filter_module.c @ 667:63a820b0bc6c release-0.3.55
nginx-0.3.55-RELEASE import
*) Feature: the "stub" parameter in the "include" SSI command.
*) Feature: the "block" SSI command.
*) Feature: the unicode2nginx script was added to contrib.
*) Bugfix: if a "root" was specified by variable only, then the root
was relative to a server prefix.
*) Bugfix: if the request contained "//" or "/./" and escaped symbols
after them, then the proxied request was sent unescaped.
*) Bugfix: the $r->headers_in("Cookie") of the ngx_http_perl_module now
returns all "Cookie" header lines.
*) Bugfix: a segmentation fault occurred if
"client_body_in_file_only on" was used and nginx switched to a next
upstream.
*) Bugfix: on some condition while reconfiguration character codes
inside the "charset_map" may be treated invalid; the bug had
appeared in 0.3.50.
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 28 Jul 2006 15:16:17 +0000 |
| parents | 9079ee4735ae |
| children | 7e24168b0853 |
| 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); |
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15 |
| 667 | 16 static 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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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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30 |
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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 */ |
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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 | |
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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 { |
| 633 | 50 off_t size, sent, to_send; |
| 509 | 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 */ |
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68 |
| 509 | 69 for (cl = r->out; cl; cl = cl->next) { |
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70 ll = &cl->next; |
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71 |
| 667 | 72 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 479 | 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)) { | |
| 667 | 83 ngx_log_error(NGX_LOG_ALERT, c->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; | |
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121 *ll = cl; |
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122 ll = &cl->next; |
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123 |
| 667 | 124 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 479 | 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)) { | |
| 667 | 135 ngx_log_error(NGX_LOG_ALERT, c->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); |
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154 |
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155 if (cl->buf->flush || cl->buf->recycled) { |
| 499 | 156 flush = 1; |
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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 |
|
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
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119
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175 */ |
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71
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176 |
| 499 | 177 if (!last && !flush && in && size < (off_t) clcf->postpone_output) { |
|
4
c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
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3
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178 return NGX_OK; |
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41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
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26
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179 } |
|
1
d220029ac7f3
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180 |
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396
6f3b20c1ac50
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181 if (c->write->delayed) { |
| 597 | 182 c->buffered |= NGX_HTTP_WRITE_BUFFERED; |
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77
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183 return NGX_AGAIN; |
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57c2e18d3572
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184 } |
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185 |
| 597 | 186 if (size == 0 && !(c->buffered & NGX_LOWLEVEL_BUFFERED)) { |
| 483 | 187 if (last) { |
| 509 | 188 r->out = NULL; |
| 597 | 189 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; |
| 190 | |
| 483 | 191 return NGX_OK; |
| 192 } | |
| 461 | 193 |
| 499 | 194 if (flush) { |
| 501 | 195 do { |
| 509 | 196 r->out = r->out->next; |
| 597 | 197 } while (r->out); |
| 198 | |
| 199 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; | |
| 501 | 200 |
| 499 | 201 return NGX_OK; |
| 202 } | |
| 203 | |
| 667 | 204 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
| 483 | 205 "the http output chain is empty"); |
| 461 | 206 |
| 483 | 207 ngx_debug_point(); |
| 208 | |
| 209 return NGX_ERROR; | |
|
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
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210 } |
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211 |
| 635 | 212 if (r->limit_rate) { |
| 213 to_send = r->limit_rate * (ngx_time() - r->start_time + 1) - c->sent; | |
| 633 | 214 |
| 635 | 215 if (to_send <= 0) { |
| 216 c->write->delayed = 1; | |
| 667 | 217 ngx_add_timer(c->write, |
| 218 (ngx_msec_t) (- to_send * 1000 / r->limit_rate + 1)); | |
| 635 | 219 |
| 220 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
| 221 | |
| 222 return NGX_AGAIN; | |
| 223 } | |
| 224 | |
| 225 } else { | |
| 633 | 226 to_send = 0; |
| 227 } | |
| 228 | |
|
396
6f3b20c1ac50
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395
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229 sent = c->sent; |
|
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
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230 |
| 633 | 231 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 232 "http write filter to send %O", to_send); | |
| 233 | |
| 234 chain = c->send_chain(c, r->out, to_send); | |
|
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
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parents:
59
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235 |
|
396
6f3b20c1ac50
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236 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
| 461 | 237 "http write filter %p", chain); |
|
61
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238 |
| 633 | 239 if (chain == NGX_CHAIN_ERROR) { |
| 240 c->error = 1; | |
| 241 return NGX_ERROR; | |
| 242 } | |
| 243 | |
| 244 if (to_send) { | |
|
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
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245 sent = c->sent - sent; |
|
6f3b20c1ac50
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246 c->write->delayed = 1; |
| 667 | 247 ngx_add_timer(c->write, (ngx_msec_t) (sent * 1000 / r->limit_rate + 1)); |
|
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
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248 } |
|
361
446782c909b3
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249 |
| 509 | 250 for (cl = r->out; cl && cl != chain; /* void */) { |
| 507 | 251 ln = cl; |
| 252 cl = cl->next; | |
| 253 ngx_free_chain(r->pool, ln); | |
| 254 } | |
| 255 | |
| 509 | 256 r->out = chain; |
|
399
4e21d1291a14
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257 |
| 597 | 258 if (chain) { |
| 259 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
| 260 return NGX_AGAIN; | |
| 261 } | |
| 262 | |
| 263 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; | |
| 264 | |
| 265 if ((c->buffered & NGX_LOWLEVEL_BUFFERED) && r->postponed == NULL) { | |
|
395
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
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266 return NGX_AGAIN; |
|
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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267 } |
|
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
268 |
|
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
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parents:
396
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269 return NGX_OK; |
|
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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270 } |
|
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
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271 |
|
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
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parents:
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272 |
| 501 | 273 static ngx_int_t |
| 274 ngx_http_write_filter_init(ngx_cycle_t *cycle) | |
|
71
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275 { |
|
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276 ngx_http_top_body_filter = ngx_http_write_filter; |
|
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nginx-0.0.1-2003-04-08-19:40:10 import
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parents:
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277 |
|
59229033ae93
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278 return NGX_OK; |
|
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nginx-0.0.1-2003-04-08-19:40:10 import
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279 } |