Mercurial > hg > nginx
annotate src/http/ngx_http_write_filter_module.c @ 6555:090a78da4f88
Belatedly changed the ngx_create_listening() prototype.
The function is called only with "struct sockaddr *" since 0.7.58.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Fri, 20 May 2016 17:02:04 +0300 |
parents | f01ab2dbcfdc |
children | a7ff19afbb14 |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #include <ngx_config.h> |
99
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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12 |
681 | 13 static ngx_int_t ngx_http_write_filter_init(ngx_conf_t *cf); |
10
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15 |
667 | 16 static ngx_http_module_t ngx_http_write_filter_module_ctx = { |
509 | 17 NULL, /* preconfiguration */ |
681 | 18 ngx_http_write_filter_init, /* postconfiguration */ |
177
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19 |
91
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20 NULL, /* create main configuration */ |
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21 NULL, /* init main configuration */ |
69
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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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25 |
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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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29 |
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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 */ |
681 | 37 NULL, /* 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 { |
2907 | 50 off_t size, sent, nsent, limit; |
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51 ngx_uint_t last, flush, sync; |
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52 ngx_msec_t delay; |
509 | 53 ngx_chain_t *cl, *ln, **ll, *chain; |
54 ngx_connection_t *c; | |
55 ngx_http_core_loc_conf_t *clcf; | |
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56 |
527 | 57 c = r->connection; |
58 | |
583 | 59 if (c->error) { |
527 | 60 return NGX_ERROR; |
61 } | |
62 | |
303
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63 size = 0; |
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64 flush = 0; |
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65 sync = 0; |
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66 last = 0; |
509 | 67 ll = &r->out; |
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68 |
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69 /* find the size, the flush point and the last link of the saved chain */ |
71
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70 |
509 | 71 for (cl = r->out; cl; cl = cl->next) { |
155
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72 ll = &cl->next; |
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73 |
667 | 74 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0, |
479 | 75 "write old buf t:%d f:%d %p, pos %p, size: %z " |
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76 "file: %O, size: %O", |
479 | 77 cl->buf->temporary, cl->buf->in_file, |
78 cl->buf->start, cl->buf->pos, | |
79 cl->buf->last - cl->buf->pos, | |
80 cl->buf->file_pos, | |
81 cl->buf->file_last - cl->buf->file_pos); | |
82 | |
461 | 83 #if 1 |
84 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
667 | 85 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
483 | 86 "zero size buf in writer " |
87 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
88 cl->buf->temporary, | |
89 cl->buf->recycled, | |
90 cl->buf->in_file, | |
91 cl->buf->start, | |
92 cl->buf->pos, | |
93 cl->buf->last, | |
94 cl->buf->file, | |
95 cl->buf->file_pos, | |
96 cl->buf->file_last); | |
97 | |
461 | 98 ngx_debug_point(); |
489 | 99 return NGX_ERROR; |
461 | 100 } |
101 #endif | |
102 | |
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103 size += ngx_buf_size(cl->buf); |
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104 |
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105 if (cl->buf->flush || cl->buf->recycled) { |
499 | 106 flush = 1; |
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107 } |
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108 |
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109 if (cl->buf->sync) { |
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110 sync = 1; |
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111 } |
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112 |
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113 if (cl->buf->last_buf) { |
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114 last = 1; |
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115 } |
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116 } |
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118 /* add the new chain to the existent one */ |
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119 |
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120 for (ln = in; ln; ln = ln->next) { |
501 | 121 cl = ngx_alloc_chain_link(r->pool); |
122 if (cl == NULL) { | |
461 | 123 return NGX_ERROR; |
124 } | |
125 | |
126 cl->buf = ln->buf; | |
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127 *ll = cl; |
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128 ll = &cl->next; |
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129 |
667 | 130 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, c->log, 0, |
479 | 131 "write new buf t:%d f:%d %p, pos %p, size: %z " |
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132 "file: %O, size: %O", |
479 | 133 cl->buf->temporary, cl->buf->in_file, |
134 cl->buf->start, cl->buf->pos, | |
135 cl->buf->last - cl->buf->pos, | |
136 cl->buf->file_pos, | |
137 cl->buf->file_last - cl->buf->file_pos); | |
138 | |
461 | 139 #if 1 |
140 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) { | |
667 | 141 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
483 | 142 "zero size buf in writer " |
143 "t:%d r:%d f:%d %p %p-%p %p %O-%O", | |
144 cl->buf->temporary, | |
145 cl->buf->recycled, | |
146 cl->buf->in_file, | |
147 cl->buf->start, | |
148 cl->buf->pos, | |
149 cl->buf->last, | |
150 cl->buf->file, | |
151 cl->buf->file_pos, | |
152 cl->buf->file_last); | |
153 | |
461 | 154 ngx_debug_point(); |
489 | 155 return NGX_ERROR; |
461 | 156 } |
157 #endif | |
158 | |
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159 size += ngx_buf_size(cl->buf); |
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160 |
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161 if (cl->buf->flush || cl->buf->recycled) { |
499 | 162 flush = 1; |
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163 } |
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164 |
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165 if (cl->buf->sync) { |
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166 sync = 1; |
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167 } |
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168 |
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169 if (cl->buf->last_buf) { |
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170 last = 1; |
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171 } |
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172 } |
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173 |
461 | 174 *ll = NULL; |
175 | |
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176 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
6480 | 177 "http write filter: l:%ui f:%ui s:%O", last, flush, size); |
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178 |
509 | 179 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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180 |
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181 /* |
509 | 182 * avoid the output if there are no last buf, no flush point, |
344
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nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
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343
diff
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183 * there are the incoming bufs and the size of all bufs |
332
159dd60d257a
nginx-0.0.3-2004-05-10-23:53:35 import
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319
diff
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184 * is smaller than "postpone_output" directive |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
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parents:
119
diff
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185 */ |
71
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186 |
499 | 187 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
diff
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188 return NGX_OK; |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
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189 } |
1
d220029ac7f3
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parents:
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190 |
396
6f3b20c1ac50
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395
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191 if (c->write->delayed) { |
597 | 192 c->buffered |= NGX_HTTP_WRITE_BUFFERED; |
77
57c2e18d3572
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193 return NGX_AGAIN; |
57c2e18d3572
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194 } |
57c2e18d3572
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195 |
5513
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SPDY: body filter was replaced by c->send_chain() function.
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196 if (size == 0 |
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197 && !(c->buffered & NGX_LOWLEVEL_BUFFERED) |
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198 && !(last && c->need_last_buf)) |
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199 { |
5926
08bfc7188a41
Write filter: fixed handling of sync bufs (ticket #132).
Maxim Dounin <mdounin@mdounin.ru>
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200 if (last || flush || sync) { |
4833
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Write filter: replaced unneeded loop with one to free chains.
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diff
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201 for (cl = r->out; cl; /* void */) { |
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202 ln = cl; |
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203 cl = cl->next; |
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204 ngx_free_chain(r->pool, ln); |
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205 } |
597 | 206 |
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207 r->out = NULL; |
597 | 208 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; |
501 | 209 |
499 | 210 return NGX_OK; |
211 } | |
212 | |
667 | 213 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
483 | 214 "the http output chain is empty"); |
461 | 215 |
483 | 216 ngx_debug_point(); |
217 | |
218 return NGX_ERROR; | |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
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142
diff
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219 } |
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220 |
635 | 221 if (r->limit_rate) { |
5201
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Added r->limit_rate_after.
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222 if (r->limit_rate_after == 0) { |
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223 r->limit_rate_after = clcf->limit_rate_after; |
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224 } |
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225 |
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ed576bd1d9c0
Limit rate: fixed integer overflow in limit calculation (ticket #256).
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226 limit = (off_t) r->limit_rate * (ngx_time() - r->start_sec + 1) |
5201
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227 - (c->sent - r->limit_rate_after); |
633 | 228 |
1194
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229 if (limit <= 0) { |
635 | 230 c->write->delayed = 1; |
5884
8486205d10db
Write filter: stored delay in a variable, no functional changes.
Roman Arutyunyan <arut@nginx.com>
parents:
5513
diff
changeset
|
231 delay = (ngx_msec_t) (- limit * 1000 / r->limit_rate + 1); |
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Write filter: stored delay in a variable, no functional changes.
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232 ngx_add_timer(c->write, delay); |
635 | 233 |
234 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
235 | |
236 return NGX_AGAIN; | |
237 } | |
238 | |
4384
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Fixed interaction of limit_rate and sendfile_max_chunk.
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239 if (clcf->sendfile_max_chunk |
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240 && (off_t) clcf->sendfile_max_chunk < limit) |
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parents:
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241 { |
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Fixed interaction of limit_rate and sendfile_max_chunk.
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242 limit = clcf->sendfile_max_chunk; |
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Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
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diff
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|
243 } |
1197 | 244 |
635 | 245 } else { |
4384
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Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
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diff
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|
246 limit = clcf->sendfile_max_chunk; |
633 | 247 } |
248 | |
396
6f3b20c1ac50
nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents:
395
diff
changeset
|
249 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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|
250 |
633 | 251 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1194
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|
252 "http write filter limit %O", limit); |
633 | 253 |
1194
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diff
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|
254 chain = c->send_chain(c, r->out, limit); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
255 |
396
6f3b20c1ac50
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parents:
395
diff
changeset
|
256 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
461 | 257 "http write filter %p", chain); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
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parents:
59
diff
changeset
|
258 |
633 | 259 if (chain == NGX_CHAIN_ERROR) { |
260 c->error = 1; | |
261 return NGX_ERROR; | |
262 } | |
263 | |
1197 | 264 if (r->limit_rate) { |
2907 | 265 |
266 nsent = c->sent; | |
267 | |
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Added r->limit_rate_after.
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|
268 if (r->limit_rate_after) { |
2907 | 269 |
5201
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Added r->limit_rate_after.
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diff
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|
270 sent -= r->limit_rate_after; |
2907 | 271 if (sent < 0) { |
272 sent = 0; | |
273 } | |
274 | |
5201
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Added r->limit_rate_after.
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parents:
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diff
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|
275 nsent -= r->limit_rate_after; |
2907 | 276 if (nsent < 0) { |
277 nsent = 0; | |
278 } | |
279 } | |
280 | |
4383
5130c16a130e
Fixed throughput problems with large limit_rate.
Maxim Dounin <mdounin@mdounin.ru>
parents:
2907
diff
changeset
|
281 delay = (ngx_msec_t) ((nsent - sent) * 1000 / r->limit_rate); |
1657
6a8a066adc98
improve throughput with large limit_rate
Igor Sysoev <igor@sysoev.ru>
parents:
1412
diff
changeset
|
282 |
6a8a066adc98
improve throughput with large limit_rate
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diff
changeset
|
283 if (delay > 0) { |
4384
a8b6d5dee539
Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
4383
diff
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|
284 limit = 0; |
1657
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improve throughput with large limit_rate
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diff
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|
285 c->write->delayed = 1; |
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improve throughput with large limit_rate
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parents:
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diff
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|
286 ngx_add_timer(c->write, delay); |
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improve throughput with large limit_rate
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parents:
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diff
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|
287 } |
4384
a8b6d5dee539
Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
4383
diff
changeset
|
288 } |
1197 | 289 |
4384
a8b6d5dee539
Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
4383
diff
changeset
|
290 if (limit |
a8b6d5dee539
Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
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diff
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|
291 && c->write->ready |
a8b6d5dee539
Fixed interaction of limit_rate and sendfile_max_chunk.
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parents:
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diff
changeset
|
292 && c->sent - sent >= limit - (off_t) (2 * ngx_pagesize)) |
1408
e67ef50c3176
set delay only when almost whole sendfile_max_chunk was transferred
Igor Sysoev <igor@sysoev.ru>
parents:
1197
diff
changeset
|
293 { |
1197 | 294 c->write->delayed = 1; |
295 ngx_add_timer(c->write, 1); | |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
296 } |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
356
diff
changeset
|
297 |
509 | 298 for (cl = r->out; cl && cl != chain; /* void */) { |
507 | 299 ln = cl; |
300 cl = cl->next; | |
301 ngx_free_chain(r->pool, ln); | |
302 } | |
303 | |
509 | 304 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
|
305 |
597 | 306 if (chain) { |
307 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
308 return NGX_AGAIN; | |
309 } | |
310 | |
311 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; | |
312 | |
313 if ((c->buffered & NGX_LOWLEVEL_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
|
314 return NGX_AGAIN; |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
315 } |
f8f0f1834266
nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
394
diff
changeset
|
316 |
399
4e21d1291a14
nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
396
diff
changeset
|
317 return NGX_OK; |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
318 } |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
319 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
320 |
501 | 321 static ngx_int_t |
681 | 322 ngx_http_write_filter_init(ngx_conf_t *cf) |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
323 { |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
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parents:
69
diff
changeset
|
324 ngx_http_top_body_filter = ngx_http_write_filter; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
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parents:
69
diff
changeset
|
325 |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
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parents:
69
diff
changeset
|
326 return NGX_OK; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
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parents:
69
diff
changeset
|
327 } |