annotate src/http/ngx_http_write_filter.c @ 473:8e8f3af115b5 release-0.1.11

nginx-0.1.11-RELEASE import *) Feature: the worker_priority directive. *) Change: both tcp_nopush and tcp_nodelay directives affect the transferred response. *) Bugfix: nginx did not call initgroups(). Thanks to Andrew Sitnikov and Andrei Nigmatulin. *) Change: now the ngx_http_autoindex_module shows the file size in the bytes. *) Bugfix: the ngx_http_autoindex_module returned the 500 error if the broken symlink was in a directory. *) Bugfix: the files bigger than 4G could not be transferred using sendfile. *) Bugfix: if the backend was resolved to several backends and there was an error while the response waiting then process may got caught in an endless loop. *) Bugfix: the worker process may exit with the "unknown cycle" message when the /dev/poll method was used. *) Bugfix: "close() channel failed" errors. *) Bugfix: the autodetection of the "nobody" and "nogroup" groups. *) Bugfix: the send_lowat directive did not work on Linux. *) Bugfix: the segmentation fault occurred if there was no events section in configuration. *) Bugfix: nginx could not be built on OpenBSD. *) Bugfix: the double slashes in "://" in the URI were converted to ":/".
author Igor Sysoev <igor@sysoev.ru>
date Thu, 02 Dec 2004 18:40:46 +0000
parents a88a3e4e158f
children c52408583801
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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42d11f017717 nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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7 #include <ngx_config.h>
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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8 #include <ngx_core.h>
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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9 #include <ngx_event.h>
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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10 #include <ngx_http.h>
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53cd05892261 nginx-0.0.1-2002-12-27-19:22:50 import
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11
53cd05892261 nginx-0.0.1-2002-12-27-19:22:50 import
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12
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a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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13 typedef struct {
a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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14 ngx_chain_t *out;
a059e1aa65d4 nginx-0.0.1-2003-06-02-19:24:30 import
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15 } ngx_http_write_filter_ctx_t;
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
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18 static ngx_int_t ngx_http_write_filter_init(ngx_cycle_t *cycle);
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4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
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53cb81681040 nginx-0.0.1-2002-12-15-09:25:09 import
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21 ngx_http_module_t ngx_http_write_filter_module_ctx = {
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4db54fdbcbe7 nginx-0.0.1-2003-11-10-20:17:31 import
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22 NULL, /* pre conf */
4db54fdbcbe7 nginx-0.0.1-2003-11-10-20:17:31 import
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23
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24 NULL, /* create main configuration */
637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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25 NULL, /* init main configuration */
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e43f406e4525 nginx-0.0.1-2003-03-20-19:09:44 import
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26
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27 NULL, /* create server configuration */
637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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28 NULL, /* merge server configuration */
637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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29
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30 NULL, /* create location configuration */
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
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31 NULL, /* merge location configuration */
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4f3879d9b6f6 nginx-0.0.1-2002-09-11-19:18:33 import
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32 };
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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35 ngx_module_t ngx_http_write_filter_module = {
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a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
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36 NGX_MODULE,
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37530da31268 nginx-0.0.1-2003-05-16-19:27:48 import
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37 &ngx_http_write_filter_module_ctx, /* module context */
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b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
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38 NULL, /* module directives */
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a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
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39 NGX_HTTP_MODULE, /* module type */
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152567c11325 nginx-0.0.1-2003-07-02-22:51:41 import
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40 ngx_http_write_filter_init, /* init module */
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00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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41 NULL /* init process */
41
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42 };
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43
59e7c7f30d49 nginx-0.0.1-2002-12-26-19:26:23 import
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44
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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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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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46 {
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b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
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47 int last;
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ea3113b181d1 nginx-0.0.9-2004-07-28-23:21:26 import
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48 off_t size, flush, sent;
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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;
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
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52 ngx_http_write_filter_ctx_t *ctx;
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6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
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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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637625a2acdb nginx-0.0.1-2003-05-19-20:39:14 import
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56
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57 if (ctx == NULL) {
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a23d010f356d nginx-0.0.1-2003-05-27-16:18:54 import
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58 ngx_http_create_ctx(r, ctx, ngx_http_write_filter_module,
67
5a7d1aaa1618 nginx-0.0.1-2003-03-11-23:38:13 import
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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;
00c5660d2707 nginx-0.0.3-2004-04-01-20:20:53 import
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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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59229033ae93 nginx-0.0.1-2003-04-08-19:40:10 import
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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
461
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72 #if 1
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73 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) {
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74 ngx_debug_point();
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75 }
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76 #endif
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77
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78 size += ngx_buf_size(cl->buf);
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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80 if (cl->buf->flush || cl->buf->recycled) {
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81 flush = size;
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82 }
1
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83
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84 if (cl->buf->last_buf) {
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85 last = 1;
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86 }
1
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87 }
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88
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89 /* add the new chain to the existent one */
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
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90
332
159dd60d257a nginx-0.0.3-2004-05-10-23:53:35 import
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91 for (ln = in; ln; ln = ln->next) {
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92 if (!(cl = ngx_alloc_chain_link(r->pool))) {
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93 return NGX_ERROR;
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94 }
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95
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96 cl->buf = ln->buf;
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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97 *ll = cl;
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98 ll = &cl->next;
153
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99
461
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100 #if 1
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101 if (ngx_buf_size(cl->buf) == 0 && !ngx_buf_special(cl->buf)) {
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102 ngx_debug_point();
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103 }
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104 #endif
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105
403
ea3113b181d1 nginx-0.0.9-2004-07-28-23:21:26 import
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106 size += ngx_buf_size(cl->buf);
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c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
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107
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108 if (cl->buf->flush || cl->buf->recycled) {
153
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
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109 flush = size;
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
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110 }
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
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111
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112 if (cl->buf->last_buf) {
153
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diff changeset
113 last = 1;
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
114 }
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
115 }
c71aeb75c071 nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents: 144
diff changeset
116
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
117 *ll = NULL;
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
118
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
119 c = r->connection;
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
120
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
121 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0,
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
122 "http write filter: l:%d f:%O 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
123
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 363
diff changeset
124 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
125 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
126
142
cb77c084acdb nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents: 119
diff changeset
127 /*
344
e366ba5db8f8 nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
diff changeset
128 * 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
129 * 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
130 * 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
131 */
71
59229033ae93 nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents: 69
diff changeset
132
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 363
diff changeset
133 if (!last && flush == 0 && 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
134 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
135 }
1
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
136
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
137 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
138 return NGX_AGAIN;
57c2e18d3572 nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents: 75
diff changeset
139 }
57c2e18d3572 nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents: 75
diff changeset
140
399
4e21d1291a14 nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 396
diff changeset
141 if (size == 0 && !c->buffered) {
333
be40e9893a19 nginx-0.0.3-2004-05-11-20:16:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 332
diff changeset
142 if (!last) {
be40e9893a19 nginx-0.0.3-2004-05-11-20:16:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 332
diff changeset
143 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
be40e9893a19 nginx-0.0.3-2004-05-11-20:16:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 332
diff changeset
144 "the http output chain is empty");
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
145
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
146 ngx_debug_point();
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
147
455
295d97d70c69 nginx-0.1.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
148 return NGX_ERROR;
333
be40e9893a19 nginx-0.0.3-2004-05-11-20:16:13 import
Igor Sysoev <igor@sysoev.ru>
parents: 332
diff changeset
149 }
143
5526213be452 nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 142
diff changeset
150 return NGX_OK;
5526213be452 nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 142
diff changeset
151 }
5526213be452 nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents: 142
diff changeset
152
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
153 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
154
473
8e8f3af115b5 nginx-0.1.11-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 461
diff changeset
155 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
156
396
6f3b20c1ac50 nginx-0.0.7-2004-07-18-23:11:20 import
Igor Sysoev <igor@sysoev.ru>
parents: 395
diff changeset
157 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
461
a88a3e4e158f nginx-0.1.5-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 455
diff changeset
158 "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
159
391
b670db10cbbd nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents: 363
diff changeset
160 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
161 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
162 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
163 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
164 (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
165 }
361
446782c909b3 nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents: 356
diff changeset
166
61
4f3e2abcc2c4 nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents: 59
diff changeset
167 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
168 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
169 }
1
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
170
399
4e21d1291a14 nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 396
diff changeset
171 ctx->out = chain;
4e21d1291a14 nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 396
diff changeset
172
4e21d1291a14 nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 396
diff changeset
173 if (chain || c->buffered) {
395
f8f0f1834266 nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 394
diff changeset
174 return NGX_AGAIN;
f8f0f1834266 nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 394
diff changeset
175 }
f8f0f1834266 nginx-0.0.7-2004-07-16-21:11:43 import
Igor Sysoev <igor@sysoev.ru>
parents: 394
diff changeset
176
399
4e21d1291a14 nginx-0.0.7-2004-07-25-22:34:14 import
Igor Sysoev <igor@sysoev.ru>
parents: 396
diff changeset
177 return NGX_OK;
1
d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
178 }
9
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents: 8
diff changeset
179
6f58641241bb nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents: 8
diff changeset
180
356
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 344
diff changeset
181 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
182 {
59229033ae93 nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents: 69
diff changeset
183 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
184
59229033ae93 nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents: 69
diff changeset
185 return NGX_OK;
59229033ae93 nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents: 69
diff changeset
186 }