Mercurial > hg > nginx
annotate src/http/ngx_http_write_filter.c @ 122:cd91e4a1ad0d
nginx-0.0.1-2003-07-23-17:10:12 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 23 Jul 2003 13:10:12 +0000 |
parents | cd54bcbaf3b5 |
children | cb77c084acdb |
rev | line source |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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5 #include <ngx_http.h> |
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8 typedef struct { |
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9 ssize_t buffer_output; |
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10 } ngx_http_write_filter_conf_t; |
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13 typedef struct { |
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14 ngx_chain_t *out; |
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15 } ngx_http_write_filter_ctx_t; |
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18 static void *ngx_http_write_filter_create_conf(ngx_conf_t *cf); |
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19 static char *ngx_http_write_filter_merge_conf(ngx_conf_t *cf, |
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20 void *parent, void *child); |
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21 static int ngx_http_write_filter_init(ngx_cycle_t *cycle); |
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24 static ngx_command_t ngx_http_write_filter_commands[] = { |
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25 |
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26 {ngx_string("buffer_output"), |
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27 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
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28 ngx_conf_set_size_slot, |
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29 NGX_HTTP_LOC_CONF_OFFSET, |
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30 offsetof(ngx_http_write_filter_conf_t, buffer_output), |
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31 NULL}, |
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32 |
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33 ngx_null_command |
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34 }; |
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35 |
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36 |
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37 ngx_http_module_t ngx_http_write_filter_module_ctx = { |
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38 NULL, /* create main configuration */ |
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39 NULL, /* init main configuration */ |
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40 |
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41 NULL, /* create server configuration */ |
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42 NULL, /* merge server configuration */ |
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43 |
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44 ngx_http_write_filter_create_conf, /* create location configuration */ |
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45 ngx_http_write_filter_merge_conf /* merge location configuration */ |
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46 }; |
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47 |
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48 |
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49 ngx_module_t ngx_http_write_filter_module = { |
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50 NGX_MODULE, |
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51 &ngx_http_write_filter_module_ctx, /* module context */ |
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52 ngx_http_write_filter_commands, /* module directives */ |
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53 NGX_HTTP_MODULE, /* module type */ |
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54 ngx_http_write_filter_init, /* init module */ |
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55 NULL /* init child */ |
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56 }; |
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57 |
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58 |
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59 int ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) |
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60 { |
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61 int last; |
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62 off_t size, flush; |
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63 ngx_chain_t *ce, **le, *chain; |
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64 ngx_http_write_filter_ctx_t *ctx; |
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65 ngx_http_write_filter_conf_t *conf; |
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66 |
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67 ctx = ngx_http_get_module_ctx(r->main ? r->main : r, |
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68 ngx_http_write_filter_module); |
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69 |
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70 if (ctx == NULL) { |
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71 ngx_http_create_ctx(r, ctx, ngx_http_write_filter_module, |
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72 sizeof(ngx_http_write_filter_ctx_t), NGX_ERROR); |
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73 } |
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74 |
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75 size = flush = 0; |
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76 last = 0; |
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77 le = &ctx->out; |
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78 |
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79 /* find the size, the flush point and the last entry of the saved chain */ |
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80 |
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81 for (ce = ctx->out; ce; ce = ce->next) { |
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82 le = &ce->next; |
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83 |
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84 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) { |
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85 size += ce->hunk->last - ce->hunk->pos; |
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86 } else { |
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87 size += ce->hunk->file_last - ce->hunk->file_pos; |
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88 } |
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89 |
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90 if (ce->hunk->type & (NGX_HUNK_FLUSH|NGX_HUNK_RECYCLED)) { |
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91 flush = size; |
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92 } |
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93 |
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94 if (ce->hunk->type & NGX_HUNK_LAST) { |
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95 last = 1; |
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96 } |
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97 } |
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98 |
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99 /* add the new chain to the existent one */ |
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100 |
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d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
101 for (/* void */; in; in = in->next) { |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
96
diff
changeset
|
102 ngx_test_null(ce, ngx_alloc_chain_entry(r->pool), NGX_ERROR); |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
103 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
104 ce->hunk = in->hunk; |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
105 ce->next = NULL; |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
106 *le = ce; |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
107 le = &ce->next; |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
108 |
67
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
109 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) { |
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
110 size += ce->hunk->last - ce->hunk->pos; |
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
111 } else { |
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
112 size += ce->hunk->file_last - ce->hunk->file_pos; |
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
113 } |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
1
diff
changeset
|
114 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
115 if (ce->hunk->type & (NGX_HUNK_FLUSH|NGX_HUNK_RECYCLED)) { |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
116 flush = size; |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
117 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
118 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
119 if (ce->hunk->type & NGX_HUNK_LAST) { |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
120 last = 1; |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
121 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
122 } |
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
90
diff
changeset
|
124 conf = ngx_http_get_module_loc_conf(r->main ? r->main : r, |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
91
diff
changeset
|
125 ngx_http_write_filter_module); |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
126 |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
61
diff
changeset
|
127 #if (NGX_DEBUG_WRITE_FILTER) |
75
869b10be682f
nginx-0.0.1-2003-04-14-21:04:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
71
diff
changeset
|
128 ngx_log_debug(r->connection->log, |
869b10be682f
nginx-0.0.1-2003-04-14-21:04:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
71
diff
changeset
|
129 "write filter: last:%d flush:%qd size:%qd" _ |
869b10be682f
nginx-0.0.1-2003-04-14-21:04:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
71
diff
changeset
|
130 last _ flush _ size); |
44
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
131 #endif |
26
53cb81681040
nginx-0.0.1-2002-12-15-09:25:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
24
diff
changeset
|
132 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
133 /* avoid the output if there is no last hunk, no flush point and |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
134 size of the hunks is smaller then "buffer_output" */ |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
135 |
41
59e7c7f30d49
nginx-0.0.1-2002-12-26-19:26:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
26
diff
changeset
|
136 if (!last && flush == 0 && size < conf->buffer_output) { |
4
c5f071d376e5
nginx-0.0.1-2002-08-22-19:24:03 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
137 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
|
138 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
139 |
77
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
140 if (r->connection->write->delayed) { |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
141 return NGX_AGAIN; |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
142 } |
57c2e18d3572
nginx-0.0.1-2003-04-17-21:59:35 import
Igor Sysoev <igor@sysoev.ru>
parents:
75
diff
changeset
|
143 |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
90
diff
changeset
|
144 chain = ngx_write_chain(r->connection, ctx->out); |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
145 |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
146 #if (NGX_DEBUG_WRITE_FILTER) |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
147 ngx_log_debug(r->connection->log, "write filter %x" _ chain); |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
148 #endif |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
149 |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
150 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
|
151 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
|
152 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
153 |
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
154 ctx->out = chain; |
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
156 if (chain == NULL) { |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
157 return NGX_OK; |
8
708f8bb772ec
nginx-0.0.1-2002-09-02-18:48:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
4
diff
changeset
|
158 |
61
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
159 } else { |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
160 return NGX_AGAIN; |
4f3e2abcc2c4
nginx-0.0.1-2003-02-11-19:42:23 import
Igor Sysoev <igor@sysoev.ru>
parents:
59
diff
changeset
|
161 } |
1
d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
162 } |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
163 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
164 |
119
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
113
diff
changeset
|
165 static void *ngx_http_write_filter_create_conf(ngx_conf_t *cf) |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
166 { |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
167 ngx_http_write_filter_conf_t *conf; |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
168 |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
169 ngx_test_null(conf, |
119
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
113
diff
changeset
|
170 ngx_palloc(cf->pool, sizeof(ngx_http_write_filter_conf_t)), |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
171 NULL); |
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
172 |
10
4f3879d9b6f6
nginx-0.0.1-2002-09-11-19:18:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
9
diff
changeset
|
173 conf->buffer_output = NGX_CONF_UNSET; |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
174 |
10
4f3879d9b6f6
nginx-0.0.1-2002-09-11-19:18:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
9
diff
changeset
|
175 return conf; |
9
6f58641241bb
nginx-0.0.1-2002-09-07-14:14:25 import
Igor Sysoev <igor@sysoev.ru>
parents:
8
diff
changeset
|
176 } |
44
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
177 |
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
178 |
119
cd54bcbaf3b5
nginx-0.0.1-2003-07-21-01:15:59 import
Igor Sysoev <igor@sysoev.ru>
parents:
113
diff
changeset
|
179 static char *ngx_http_write_filter_merge_conf(ngx_conf_t *cf, |
44
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
180 void *parent, void *child) |
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
181 { |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
90
diff
changeset
|
182 ngx_http_write_filter_conf_t *prev = parent; |
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
90
diff
changeset
|
183 ngx_http_write_filter_conf_t *conf = child; |
44
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
184 |
91
637625a2acdb
nginx-0.0.1-2003-05-19-20:39:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
90
diff
changeset
|
185 ngx_conf_merge_size_value(conf->buffer_output, prev->buffer_output, 1460); |
44
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
186 |
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
187 return NULL; |
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
188 } |
0e81ac0bb3e2
nginx-0.0.1-2003-01-09-08:36:00 import
Igor Sysoev <igor@sysoev.ru>
parents:
43
diff
changeset
|
189 |
71
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
190 |
113
d7f606e25b99
nginx-0.0.1-2003-07-04-19:10:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
110
diff
changeset
|
191 static int 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
|
192 { |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
193 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
|
194 |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
195 return NGX_OK; |
59229033ae93
nginx-0.0.1-2003-04-08-19:40:10 import
Igor Sysoev <igor@sysoev.ru>
parents:
69
diff
changeset
|
196 } |