Mercurial > hg > nginx-quic
annotate src/http/ngx_http_write_filter_module.c @ 1259:05b5236c2ff5
if subrequest response was buffered in file, then subrequest was finalized
with 0 code, ngx_http_writer() was not set, and response part in file was lost
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 17 Jun 2007 09:29:15 +0000 |
parents | 493a227edfd5 |
children | e67ef50c3176 0bd321c8ce67 |
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 |
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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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12 |
681 | 13 static ngx_int_t ngx_http_write_filter_init(ngx_conf_t *cf); |
10
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14 |
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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 |
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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 { |
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50 off_t size, sent, limit; |
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; | |
9
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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 |
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; | |
155
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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; |
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); |
26
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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) { |
597 | 182 c->buffered |= NGX_HTTP_WRITE_BUFFERED; |
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183 return NGX_AGAIN; |
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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
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210 } |
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211 |
635 | 212 if (r->limit_rate) { |
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213 limit = r->limit_rate * (ngx_time() - r->start_sec + 1) - c->sent; |
633 | 214 |
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215 if (limit <= 0) { |
635 | 216 c->write->delayed = 1; |
667 | 217 ngx_add_timer(c->write, |
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218 (ngx_msec_t) (- limit * 1000 / r->limit_rate + 1)); |
635 | 219 |
220 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
221 | |
222 return NGX_AGAIN; | |
223 } | |
224 | |
1197 | 225 } else if (clcf->sendfile_max_chunk) { |
226 limit = clcf->sendfile_max_chunk; | |
227 | |
635 | 228 } else { |
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229 limit = 0; |
633 | 230 } |
231 | |
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232 sent = c->sent; |
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233 |
633 | 234 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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235 "http write filter limit %O", limit); |
633 | 236 |
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237 chain = c->send_chain(c, r->out, limit); |
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238 |
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239 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
461 | 240 "http write filter %p", chain); |
61
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241 |
633 | 242 if (chain == NGX_CHAIN_ERROR) { |
243 c->error = 1; | |
244 return NGX_ERROR; | |
245 } | |
246 | |
1197 | 247 if (r->limit_rate) { |
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248 sent = c->sent - sent; |
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249 c->write->delayed = 1; |
667 | 250 ngx_add_timer(c->write, (ngx_msec_t) (sent * 1000 / r->limit_rate + 1)); |
1197 | 251 |
252 } else if (c->write->ready && clcf->sendfile_max_chunk) { | |
253 c->write->delayed = 1; | |
254 ngx_add_timer(c->write, 1); | |
362
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255 } |
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256 |
509 | 257 for (cl = r->out; cl && cl != chain; /* void */) { |
507 | 258 ln = cl; |
259 cl = cl->next; | |
260 ngx_free_chain(r->pool, ln); | |
261 } | |
262 | |
509 | 263 r->out = chain; |
399
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264 |
597 | 265 if (chain) { |
266 c->buffered |= NGX_HTTP_WRITE_BUFFERED; | |
267 return NGX_AGAIN; | |
268 } | |
269 | |
270 c->buffered &= ~NGX_HTTP_WRITE_BUFFERED; | |
271 | |
272 if ((c->buffered & NGX_LOWLEVEL_BUFFERED) && r->postponed == NULL) { | |
395
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273 return NGX_AGAIN; |
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274 } |
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275 |
399
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276 return NGX_OK; |
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277 } |
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278 |
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279 |
501 | 280 static ngx_int_t |
681 | 281 ngx_http_write_filter_init(ngx_conf_t *cf) |
71
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282 { |
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283 ngx_http_top_body_filter = ngx_http_write_filter; |
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284 |
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285 return NGX_OK; |
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286 } |