Mercurial > hg > nginx
annotate src/http/ngx_http_copy_filter_module.c @ 6004:2dac6ae6d703
Deprecated "aio sendfile".
Specifying "sendfile on" along with "aio on" activates the
aio pre-loading mode for sendfile().
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 12 Mar 2015 20:06:04 +0300 |
parents | ccad84a174e0 |
children | 1fdba317ee6d |
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. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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13 typedef struct { |
141
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14 ngx_bufs_t bufs; |
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15 } ngx_http_copy_filter_conf_t; |
99
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16 |
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17 |
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18 #if (NGX_HAVE_FILE_AIO) |
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19 static void ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx, |
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20 ngx_file_t *file); |
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21 static void ngx_http_copy_aio_event_handler(ngx_event_t *ev); |
3065 | 22 #if (NGX_HAVE_AIO_SENDFILE) |
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23 static ssize_t ngx_http_copy_aio_sendfile_preload(ngx_buf_t *file); |
3065 | 24 static void ngx_http_copy_aio_sendfile_event_handler(ngx_event_t *ev); |
25 #endif | |
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26 #endif |
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27 |
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28 static void *ngx_http_copy_filter_create_conf(ngx_conf_t *cf); |
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29 static char *ngx_http_copy_filter_merge_conf(ngx_conf_t *cf, |
501 | 30 void *parent, void *child); |
681 | 31 static ngx_int_t ngx_http_copy_filter_init(ngx_conf_t *cf); |
10
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32 |
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33 |
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34 static ngx_command_t ngx_http_copy_filter_commands[] = { |
10
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35 |
501 | 36 { ngx_string("output_buffers"), |
37 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
38 ngx_conf_set_bufs_slot, | |
39 NGX_HTTP_LOC_CONF_OFFSET, | |
40 offsetof(ngx_http_copy_filter_conf_t, bufs), | |
41 NULL }, | |
10
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42 |
501 | 43 ngx_null_command |
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44 }; |
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45 |
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46 |
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47 static ngx_http_module_t ngx_http_copy_filter_module_ctx = { |
509 | 48 NULL, /* preconfiguration */ |
681 | 49 ngx_http_copy_filter_init, /* postconfiguration */ |
177
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50 |
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51 NULL, /* create main configuration */ |
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52 NULL, /* init main configuration */ |
69
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53 |
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54 NULL, /* create server configuration */ |
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55 NULL, /* merge server configuration */ |
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56 |
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57 ngx_http_copy_filter_create_conf, /* create location configuration */ |
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58 ngx_http_copy_filter_merge_conf /* merge location configuration */ |
26
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59 }; |
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60 |
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61 |
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62 ngx_module_t ngx_http_copy_filter_module = { |
509 | 63 NGX_MODULE_V1, |
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64 &ngx_http_copy_filter_module_ctx, /* module context */ |
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65 ngx_http_copy_filter_commands, /* module directives */ |
96
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66 NGX_HTTP_MODULE, /* module type */ |
541 | 67 NULL, /* init master */ |
681 | 68 NULL, /* init module */ |
541 | 69 NULL, /* init process */ |
70 NULL, /* init thread */ | |
71 NULL, /* exit thread */ | |
72 NULL, /* exit process */ | |
73 NULL, /* exit master */ | |
74 NGX_MODULE_V1_PADDING | |
40
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75 }; |
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76 |
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77 |
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78 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
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79 |
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80 |
501 | 81 static ngx_int_t |
82 ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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83 { |
583 | 84 ngx_int_t rc; |
85 ngx_connection_t *c; | |
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86 ngx_output_chain_ctx_t *ctx; |
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87 ngx_http_core_loc_conf_t *clcf; |
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88 ngx_http_copy_filter_conf_t *conf; |
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89 |
583 | 90 c = r->connection; |
91 | |
92 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
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93 "http copy filter: \"%V?%V\"", &r->uri, &r->args); |
509 | 94 |
95 ctx = ngx_http_get_module_ctx(r, ngx_http_copy_filter_module); | |
60
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96 |
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97 if (ctx == NULL) { |
501 | 98 ctx = ngx_pcalloc(r->pool, sizeof(ngx_output_chain_ctx_t)); |
99 if (ctx == NULL) { | |
100 return NGX_ERROR; | |
101 } | |
102 | |
103 ngx_http_set_ctx(r, ctx, ngx_http_copy_filter_module); | |
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104 |
3053 | 105 conf = ngx_http_get_module_loc_conf(r, ngx_http_copy_filter_module); |
106 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
107 | |
583 | 108 ctx->sendfile = c->sendfile; |
513 | 109 ctx->need_in_memory = r->main_filter_need_in_memory |
110 || r->filter_need_in_memory; | |
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111 ctx->need_in_temp = r->filter_need_temporary; |
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112 |
3053 | 113 ctx->alignment = clcf->directio_alignment; |
114 | |
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115 ctx->pool = r->pool; |
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116 ctx->bufs = conf->bufs; |
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117 ctx->tag = (ngx_buf_tag_t) &ngx_http_copy_filter_module; |
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118 |
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119 ctx->output_filter = (ngx_output_chain_filter_pt) |
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120 ngx_http_next_body_filter; |
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121 ctx->filter_ctx = r; |
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122 |
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123 #if (NGX_HAVE_FILE_AIO) |
6004 | 124 if (ngx_file_aio && clcf->aio) { |
125 ctx->aio_handler = ngx_http_copy_aio_handler; | |
3065 | 126 #if (NGX_HAVE_AIO_SENDFILE) |
6004 | 127 ctx->aio_preload = ngx_http_copy_aio_sendfile_preload; |
3065 | 128 #endif |
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129 } |
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130 #endif |
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131 |
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132 if (in && in->buf && ngx_buf_size(in->buf)) { |
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133 r->request_output = 1; |
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134 } |
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135 } |
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136 |
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137 #if (NGX_HAVE_FILE_AIO) |
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138 ctx->aio = r->aio; |
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139 #endif |
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140 |
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141 rc = ngx_output_chain(ctx, in); |
583 | 142 |
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143 if (ctx->in == NULL) { |
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144 r->buffered &= ~NGX_HTTP_COPY_BUFFERED; |
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145 |
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146 } else { |
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147 r->buffered |= NGX_HTTP_COPY_BUFFERED; |
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148 } |
3065 | 149 |
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150 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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151 "http copy filter: %i \"%V?%V\"", rc, &r->uri, &r->args); |
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152 |
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153 return rc; |
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154 } |
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155 |
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156 |
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157 #if (NGX_HAVE_FILE_AIO) |
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158 |
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159 static void |
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160 ngx_http_copy_aio_handler(ngx_output_chain_ctx_t *ctx, ngx_file_t *file) |
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161 { |
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162 ngx_http_request_t *r; |
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163 |
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164 r = ctx->filter_ctx; |
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165 |
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166 file->aio->data = r; |
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167 file->aio->handler = ngx_http_copy_aio_event_handler; |
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168 |
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169 r->main->blocked++; |
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170 r->aio = 1; |
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171 ctx->aio = 1; |
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172 } |
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173 |
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174 |
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175 static void |
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176 ngx_http_copy_aio_event_handler(ngx_event_t *ev) |
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177 { |
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178 ngx_event_aio_t *aio; |
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179 ngx_http_request_t *r; |
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180 |
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181 aio = ev->data; |
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182 r = aio->data; |
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183 |
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184 r->main->blocked--; |
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185 r->aio = 0; |
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186 |
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187 r->connection->write->handler(r->connection->write); |
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188 } |
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189 |
3065 | 190 |
191 #if (NGX_HAVE_AIO_SENDFILE) | |
192 | |
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193 static ssize_t |
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194 ngx_http_copy_aio_sendfile_preload(ngx_buf_t *file) |
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195 { |
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196 ssize_t n; |
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197 static u_char buf[1]; |
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198 ngx_event_aio_t *aio; |
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199 ngx_http_request_t *r; |
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200 |
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201 n = ngx_file_aio_read(file->file, buf, 1, file->file_pos, NULL); |
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202 |
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203 if (n == NGX_AGAIN) { |
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204 aio = file->file->aio; |
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205 aio->handler = ngx_http_copy_aio_sendfile_event_handler; |
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206 |
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207 r = aio->data; |
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208 r->main->blocked++; |
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209 r->aio = 1; |
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210 } |
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211 |
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212 return n; |
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213 } |
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214 |
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215 |
3065 | 216 static void |
217 ngx_http_copy_aio_sendfile_event_handler(ngx_event_t *ev) | |
218 { | |
219 ngx_event_aio_t *aio; | |
220 ngx_http_request_t *r; | |
221 | |
222 aio = ev->data; | |
223 r = aio->data; | |
224 | |
225 r->main->blocked--; | |
226 r->aio = 0; | |
227 ev->complete = 0; | |
228 | |
229 r->connection->write->handler(r->connection->write); | |
230 } | |
231 | |
232 #endif | |
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233 #endif |
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234 |
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235 |
501 | 236 static void * |
237 ngx_http_copy_filter_create_conf(ngx_conf_t *cf) | |
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238 { |
334
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239 ngx_http_copy_filter_conf_t *conf; |
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240 |
501 | 241 conf = ngx_palloc(cf->pool, sizeof(ngx_http_copy_filter_conf_t)); |
242 if (conf == NULL) { | |
243 return NULL; | |
244 } | |
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245 |
141
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246 conf->bufs.num = 0; |
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247 |
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248 return conf; |
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249 } |
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250 |
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251 |
501 | 252 static char * |
253 ngx_http_copy_filter_merge_conf(ngx_conf_t *cf, void *parent, void *child) | |
44
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254 { |
334
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255 ngx_http_copy_filter_conf_t *prev = parent; |
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256 ngx_http_copy_filter_conf_t *conf = child; |
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257 |
160
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258 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 1, 32768); |
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259 |
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260 return NULL; |
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261 } |
334
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262 |
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263 |
501 | 264 static ngx_int_t |
681 | 265 ngx_http_copy_filter_init(ngx_conf_t *cf) |
334
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266 { |
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267 ngx_http_next_body_filter = ngx_http_top_body_filter; |
334
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268 ngx_http_top_body_filter = ngx_http_copy_filter; |
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269 |
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270 return NGX_OK; |
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271 } |
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272 |