Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_chunked_filter_module.c @ 5379:60e0409b9ec7 release-1.5.5
nginx-1.5.5-RELEASE
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 17 Sep 2013 17:31:00 +0400 |
parents | 7fa7e60a7f66 |
children | b1858fc47e3b |
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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11 |
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12 |
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13 typedef struct { |
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14 ngx_chain_t *free; |
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15 ngx_chain_t *busy; |
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16 } ngx_http_chunked_filter_ctx_t; |
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17 |
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18 |
681 | 19 static ngx_int_t ngx_http_chunked_filter_init(ngx_conf_t *cf); |
99
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20 |
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21 |
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22 static ngx_http_module_t ngx_http_chunked_filter_module_ctx = { |
509 | 23 NULL, /* preconfiguration */ |
681 | 24 ngx_http_chunked_filter_init, /* postconfiguration */ |
177
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25 |
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26 NULL, /* create main configuration */ |
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27 NULL, /* init main configuration */ |
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28 |
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29 NULL, /* create server configuration */ |
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30 NULL, /* merge server configuration */ |
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31 |
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32 NULL, /* create location configuration */ |
629 | 33 NULL /* merge location configuration */ |
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34 }; |
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35 |
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36 |
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37 ngx_module_t ngx_http_chunked_filter_module = { |
509 | 38 NGX_MODULE_V1, |
99
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39 &ngx_http_chunked_filter_module_ctx, /* module context */ |
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40 NULL, /* module directives */ |
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41 NGX_HTTP_MODULE, /* module type */ |
541 | 42 NULL, /* init master */ |
681 | 43 NULL, /* init module */ |
541 | 44 NULL, /* init process */ |
45 NULL, /* init thread */ | |
46 NULL, /* exit thread */ | |
47 NULL, /* exit process */ | |
48 NULL, /* exit master */ | |
49 NGX_MODULE_V1_PADDING | |
99
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50 }; |
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51 |
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52 |
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53 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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54 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
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55 |
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56 |
501 | 57 static ngx_int_t |
58 ngx_http_chunked_header_filter(ngx_http_request_t *r) | |
99
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59 { |
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60 ngx_http_core_loc_conf_t *clcf; |
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61 ngx_http_chunked_filter_ctx_t *ctx; |
3484 | 62 |
615 | 63 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED |
64 || r->headers_out.status == NGX_HTTP_NO_CONTENT | |
5072
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65 || r->headers_out.status < NGX_HTTP_OK |
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66 || r != r->main |
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67 || (r->method & NGX_HTTP_HEAD)) |
615 | 68 { |
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69 return ngx_http_next_header_filter(r); |
135
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70 } |
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71 |
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72 if (r->headers_out.content_length_n == -1) { |
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73 if (r->http_version < NGX_HTTP_VERSION_11) { |
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74 r->keepalive = 0; |
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75 |
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76 } else { |
3484 | 77 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
78 | |
79 if (clcf->chunked_transfer_encoding) { | |
80 r->chunked = 1; | |
81 | |
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82 ctx = ngx_pcalloc(r->pool, |
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83 sizeof(ngx_http_chunked_filter_ctx_t)); |
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84 if (ctx == NULL) { |
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85 return NGX_ERROR; |
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86 } |
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87 |
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88 ngx_http_set_ctx(r, ctx, ngx_http_chunked_filter_module); |
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89 |
3484 | 90 } else { |
91 r->keepalive = 0; | |
92 } | |
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93 } |
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94 } |
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95 |
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96 return ngx_http_next_header_filter(r); |
99
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97 } |
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98 |
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99 |
501 | 100 static ngx_int_t |
101 ngx_http_chunked_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
99
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102 { |
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103 u_char *chunk; |
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104 off_t size; |
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105 ngx_int_t rc; |
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106 ngx_buf_t *b; |
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107 ngx_chain_t *out, *cl, *tl, **ll; |
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108 ngx_http_chunked_filter_ctx_t *ctx; |
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109 |
483 | 110 if (in == NULL || !r->chunked || r->header_only) { |
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111 return ngx_http_next_body_filter(r, in); |
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112 } |
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113 |
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114 ctx = ngx_http_get_module_ctx(r, ngx_http_chunked_filter_module); |
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115 |
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116 out = NULL; |
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117 ll = &out; |
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118 |
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119 size = 0; |
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120 cl = in; |
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121 |
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122 for ( ;; ) { |
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123 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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124 "http chunk: %d", ngx_buf_size(cl->buf)); |
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125 |
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126 size += ngx_buf_size(cl->buf); |
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127 |
667 | 128 if (cl->buf->flush |
129 || cl->buf->sync | |
130 || ngx_buf_in_memory(cl->buf) | |
131 || cl->buf->in_file) | |
132 { | |
501 | 133 tl = ngx_alloc_chain_link(r->pool); |
134 if (tl == NULL) { | |
461 | 135 return NGX_ERROR; |
136 } | |
137 | |
452 | 138 tl->buf = cl->buf; |
139 *ll = tl; | |
140 ll = &tl->next; | |
141 } | |
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142 |
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143 if (cl->next == NULL) { |
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144 break; |
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145 } |
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146 |
155
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147 cl = cl->next; |
99
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148 } |
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149 |
336
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150 if (size) { |
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151 tl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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152 if (tl == NULL) { |
455 | 153 return NGX_ERROR; |
154 } | |
155 | |
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156 b = tl->buf; |
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157 chunk = b->start; |
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158 |
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159 if (chunk == NULL) { |
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160 /* the "0000000000000000" is 64-bit hexadecimal string */ |
501 | 161 |
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162 chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1); |
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163 if (chunk == NULL) { |
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164 return NGX_ERROR; |
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165 } |
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166 |
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167 b->start = chunk; |
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168 b->end = chunk + sizeof("0000000000000000" CRLF) - 1; |
455 | 169 } |
170 | |
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171 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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172 b->memory = 0; |
455 | 173 b->temporary = 1; |
174 b->pos = chunk; | |
473 | 175 b->last = ngx_sprintf(chunk, "%xO" CRLF, size); |
455 | 176 |
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177 tl->next = out; |
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178 out = tl; |
336
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179 } |
99
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180 |
343
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181 if (cl->buf->last_buf) { |
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182 tl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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183 if (tl == NULL) { |
461 | 184 return NGX_ERROR; |
185 } | |
4128 | 186 |
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187 b = tl->buf; |
461 | 188 |
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189 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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190 b->temporary = 0; |
343
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191 b->memory = 1; |
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192 b->last_buf = 1; |
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193 b->pos = (u_char *) CRLF "0" CRLF CRLF; |
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194 b->last = b->pos + 7; |
99
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195 |
343
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196 cl->buf->last_buf = 0; |
336
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197 |
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198 *ll = tl; |
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199 |
336
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200 if (size == 0) { |
343
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201 b->pos += 2; |
336
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202 } |
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203 |
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204 } else if (size > 0) { |
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205 tl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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206 if (tl == NULL) { |
461 | 207 return NGX_ERROR; |
208 } | |
209 | |
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210 b = tl->buf; |
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211 |
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212 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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213 b->temporary = 0; |
343
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214 b->memory = 1; |
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215 b->pos = (u_char *) CRLF; |
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216 b->last = b->pos + 2; |
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217 |
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218 *ll = tl; |
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219 |
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220 } else { |
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221 *ll = NULL; |
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222 } |
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223 |
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224 rc = ngx_http_next_body_filter(r, out); |
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225 |
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226 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, |
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227 (ngx_buf_tag_t) &ngx_http_chunked_filter_module); |
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228 |
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229 return rc; |
99
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230 } |
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231 |
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232 |
501 | 233 static ngx_int_t |
681 | 234 ngx_http_chunked_filter_init(ngx_conf_t *cf) |
99
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235 { |
155
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236 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
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237 ngx_http_top_header_filter = ngx_http_chunked_header_filter; |
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238 |
155
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239 ngx_http_next_body_filter = ngx_http_top_body_filter; |
99
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240 ngx_http_top_body_filter = ngx_http_chunked_body_filter; |
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241 |
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242 return NGX_OK; |
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243 } |